cpal/src/lib.rs

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//! # How to use cpal
//!
//! Here are some concepts cpal exposes:
//!
[WIP] Introduce a `Host` API This is an implementation of the API described at #204. Please see that issue for more details on the motivation. ----- A **Host** provides access to the available audio devices on the system. Some platforms have more than one host available, e.g. wasapi/asio/dsound on windows, alsa/pulse/jack on linux and so on. As a result, some audio devices are only available on certain hosts, while others are only available on other hosts. Every platform supported by CPAL has at least one **DefaultHost** that is guaranteed to be available (alsa, wasapi and coreaudio). Currently, the default hosts are the only hosts supported by CPAL, however this will change as of landing #221 (cc @freesig). These changes should also accommodate support for other hosts such as jack #250 (cc @derekdreery) and pulseaudio (cc @knappador) #259. This introduces a suite of traits allowing for both compile time and runtime dispatch of different hosts and their uniquely associated device and event loop types. A new private **host** module has been added containing the individual host implementations, each in their own submodule gated to the platforms on which they are available. A new **platform** module has been added containing platform-specific items, including a dynamically dispatched host type that allows for easily switching between hosts at runtime. The **ALL_HOSTS** slice contains a **HostId** for each host supported on the current platform. The **available_hosts** function produces a **HostId** for each host that is currently *available* on the platform. The **host_from_id** function allows for initialising a host from its associated ID, failing with a **HostUnavailable** error. The **default_host** function returns the default host and should never fail. Please see the examples for a demonstration of the change in usage. For the most part, things look the same at the surface level, however the role of device enumeration and creating the event loop have been moved from global functions to host methods. The enumerate.rs example has been updated to enumerate all devices for each host, not just the default. **TODO** - [x] Add the new **Host** API - [x] Update examples for the new API. - [x] ALSA host - [ ] WASAPI host - [ ] CoreAudio host - [ ] Emscripten host **Follow-up PR** - [ ] ASIO host #221 cc @ishitatsuyuki more to review for you if you're interested, but it might be easier after #288 lands and this gets rebased.
2019-06-23 13:49:48 +00:00
//! - A [**Host**](./trait.Host.html) provides access to the available audio devices on the system.
//! Some platforms have more than one host available, but every platform supported by CPAL has at
//! least one [**DefaultHost**](./trait.Host.html) that is guaranteed to be available.
//! - A [**Device**](./trait.Device.html) is an audio device that may have any number of input and
//! output streams.
//! - A stream is an open flow of audio data. Input streams allow you to receive audio data, output
//! streams allow you to play audio data. You must choose which **Device** will run your stream
//! before you can create one. Often, a default device can be retrieved via the **Host**.
//! - An [**EventLoop**](./trait.EventLoop.html) is a collection of streams being run by one or
//! more **Device**s under a single **Host**. Each stream must belong to an **EventLoop**, and
//! all the streams that belong to an **EventLoop** are managed together.
//!
[WIP] Introduce a `Host` API This is an implementation of the API described at #204. Please see that issue for more details on the motivation. ----- A **Host** provides access to the available audio devices on the system. Some platforms have more than one host available, e.g. wasapi/asio/dsound on windows, alsa/pulse/jack on linux and so on. As a result, some audio devices are only available on certain hosts, while others are only available on other hosts. Every platform supported by CPAL has at least one **DefaultHost** that is guaranteed to be available (alsa, wasapi and coreaudio). Currently, the default hosts are the only hosts supported by CPAL, however this will change as of landing #221 (cc @freesig). These changes should also accommodate support for other hosts such as jack #250 (cc @derekdreery) and pulseaudio (cc @knappador) #259. This introduces a suite of traits allowing for both compile time and runtime dispatch of different hosts and their uniquely associated device and event loop types. A new private **host** module has been added containing the individual host implementations, each in their own submodule gated to the platforms on which they are available. A new **platform** module has been added containing platform-specific items, including a dynamically dispatched host type that allows for easily switching between hosts at runtime. The **ALL_HOSTS** slice contains a **HostId** for each host supported on the current platform. The **available_hosts** function produces a **HostId** for each host that is currently *available* on the platform. The **host_from_id** function allows for initialising a host from its associated ID, failing with a **HostUnavailable** error. The **default_host** function returns the default host and should never fail. Please see the examples for a demonstration of the change in usage. For the most part, things look the same at the surface level, however the role of device enumeration and creating the event loop have been moved from global functions to host methods. The enumerate.rs example has been updated to enumerate all devices for each host, not just the default. **TODO** - [x] Add the new **Host** API - [x] Update examples for the new API. - [x] ALSA host - [ ] WASAPI host - [ ] CoreAudio host - [ ] Emscripten host **Follow-up PR** - [ ] ASIO host #221 cc @ishitatsuyuki more to review for you if you're interested, but it might be easier after #288 lands and this gets rebased.
2019-06-23 13:49:48 +00:00
//! The first step is to initialise the `Host` (for accessing audio devices) and create an
//! `EventLoop`:
//!
//! ```
//! use cpal::traits::HostTrait;
[WIP] Introduce a `Host` API This is an implementation of the API described at #204. Please see that issue for more details on the motivation. ----- A **Host** provides access to the available audio devices on the system. Some platforms have more than one host available, e.g. wasapi/asio/dsound on windows, alsa/pulse/jack on linux and so on. As a result, some audio devices are only available on certain hosts, while others are only available on other hosts. Every platform supported by CPAL has at least one **DefaultHost** that is guaranteed to be available (alsa, wasapi and coreaudio). Currently, the default hosts are the only hosts supported by CPAL, however this will change as of landing #221 (cc @freesig). These changes should also accommodate support for other hosts such as jack #250 (cc @derekdreery) and pulseaudio (cc @knappador) #259. This introduces a suite of traits allowing for both compile time and runtime dispatch of different hosts and their uniquely associated device and event loop types. A new private **host** module has been added containing the individual host implementations, each in their own submodule gated to the platforms on which they are available. A new **platform** module has been added containing platform-specific items, including a dynamically dispatched host type that allows for easily switching between hosts at runtime. The **ALL_HOSTS** slice contains a **HostId** for each host supported on the current platform. The **available_hosts** function produces a **HostId** for each host that is currently *available* on the platform. The **host_from_id** function allows for initialising a host from its associated ID, failing with a **HostUnavailable** error. The **default_host** function returns the default host and should never fail. Please see the examples for a demonstration of the change in usage. For the most part, things look the same at the surface level, however the role of device enumeration and creating the event loop have been moved from global functions to host methods. The enumerate.rs example has been updated to enumerate all devices for each host, not just the default. **TODO** - [x] Add the new **Host** API - [x] Update examples for the new API. - [x] ALSA host - [ ] WASAPI host - [ ] CoreAudio host - [ ] Emscripten host **Follow-up PR** - [ ] ASIO host #221 cc @ishitatsuyuki more to review for you if you're interested, but it might be easier after #288 lands and this gets rebased.
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//! let host = cpal::default_host();
//! let event_loop = host.event_loop();
//! ```
//!
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
//! Then choose a `Device`. The easiest way is to use the default input or output `Device` via the
//! `default_input_device()` or `default_output_device()` functions. Alternatively you can
//! enumerate all the available devices with the `devices()` function. Beware that the
//! `default_*_device()` functions return an `Option` in case no device is available for that
//! stream type on the system.
//!
//! ```no_run
//! # use cpal::traits::HostTrait;
[WIP] Introduce a `Host` API This is an implementation of the API described at #204. Please see that issue for more details on the motivation. ----- A **Host** provides access to the available audio devices on the system. Some platforms have more than one host available, e.g. wasapi/asio/dsound on windows, alsa/pulse/jack on linux and so on. As a result, some audio devices are only available on certain hosts, while others are only available on other hosts. Every platform supported by CPAL has at least one **DefaultHost** that is guaranteed to be available (alsa, wasapi and coreaudio). Currently, the default hosts are the only hosts supported by CPAL, however this will change as of landing #221 (cc @freesig). These changes should also accommodate support for other hosts such as jack #250 (cc @derekdreery) and pulseaudio (cc @knappador) #259. This introduces a suite of traits allowing for both compile time and runtime dispatch of different hosts and their uniquely associated device and event loop types. A new private **host** module has been added containing the individual host implementations, each in their own submodule gated to the platforms on which they are available. A new **platform** module has been added containing platform-specific items, including a dynamically dispatched host type that allows for easily switching between hosts at runtime. The **ALL_HOSTS** slice contains a **HostId** for each host supported on the current platform. The **available_hosts** function produces a **HostId** for each host that is currently *available* on the platform. The **host_from_id** function allows for initialising a host from its associated ID, failing with a **HostUnavailable** error. The **default_host** function returns the default host and should never fail. Please see the examples for a demonstration of the change in usage. For the most part, things look the same at the surface level, however the role of device enumeration and creating the event loop have been moved from global functions to host methods. The enumerate.rs example has been updated to enumerate all devices for each host, not just the default. **TODO** - [x] Add the new **Host** API - [x] Update examples for the new API. - [x] ALSA host - [ ] WASAPI host - [ ] CoreAudio host - [ ] Emscripten host **Follow-up PR** - [ ] ASIO host #221 cc @ishitatsuyuki more to review for you if you're interested, but it might be easier after #288 lands and this gets rebased.
2019-06-23 13:49:48 +00:00
//! # let host = cpal::default_host();
//! let device = host.default_output_device().expect("no output device available");
//! ```
//!
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
//! Before we can create a stream, we must decide what the format of the audio samples is going to
//! be. You can query all the supported formats with the `supported_input_formats()` and
//! `supported_output_formats()` methods. These produce a list of `SupportedFormat` structs which
//! can later be turned into actual `Format` structs. If you don't want to query the list of
//! formats, you can also build your own `Format` manually, but doing so could lead to an error
//! when building the stream if the format is not supported by the device.
//!
//! > **Note**: the `supported_formats()` method could return an error for example if the device
//! > has been disconnected.
//!
//! ```no_run
//! use cpal::traits::{DeviceTrait, HostTrait};
[WIP] Introduce a `Host` API This is an implementation of the API described at #204. Please see that issue for more details on the motivation. ----- A **Host** provides access to the available audio devices on the system. Some platforms have more than one host available, e.g. wasapi/asio/dsound on windows, alsa/pulse/jack on linux and so on. As a result, some audio devices are only available on certain hosts, while others are only available on other hosts. Every platform supported by CPAL has at least one **DefaultHost** that is guaranteed to be available (alsa, wasapi and coreaudio). Currently, the default hosts are the only hosts supported by CPAL, however this will change as of landing #221 (cc @freesig). These changes should also accommodate support for other hosts such as jack #250 (cc @derekdreery) and pulseaudio (cc @knappador) #259. This introduces a suite of traits allowing for both compile time and runtime dispatch of different hosts and their uniquely associated device and event loop types. A new private **host** module has been added containing the individual host implementations, each in their own submodule gated to the platforms on which they are available. A new **platform** module has been added containing platform-specific items, including a dynamically dispatched host type that allows for easily switching between hosts at runtime. The **ALL_HOSTS** slice contains a **HostId** for each host supported on the current platform. The **available_hosts** function produces a **HostId** for each host that is currently *available* on the platform. The **host_from_id** function allows for initialising a host from its associated ID, failing with a **HostUnavailable** error. The **default_host** function returns the default host and should never fail. Please see the examples for a demonstration of the change in usage. For the most part, things look the same at the surface level, however the role of device enumeration and creating the event loop have been moved from global functions to host methods. The enumerate.rs example has been updated to enumerate all devices for each host, not just the default. **TODO** - [x] Add the new **Host** API - [x] Update examples for the new API. - [x] ALSA host - [ ] WASAPI host - [ ] CoreAudio host - [ ] Emscripten host **Follow-up PR** - [ ] ASIO host #221 cc @ishitatsuyuki more to review for you if you're interested, but it might be easier after #288 lands and this gets rebased.
2019-06-23 13:49:48 +00:00
//! # let host = cpal::default_host();
//! # let device = host.default_output_device().unwrap();
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
//! let mut supported_formats_range = device.supported_output_formats()
//! .expect("error while querying formats");
//! let format = supported_formats_range.next()
//! .expect("no supported format?!")
//! .with_max_sample_rate();
//! ```
//!
//! Now that we have everything for the stream, we can create it from our event loop:
//!
//! ```no_run
//! use cpal::traits::{DeviceTrait, EventLoopTrait, HostTrait};
[WIP] Introduce a `Host` API This is an implementation of the API described at #204. Please see that issue for more details on the motivation. ----- A **Host** provides access to the available audio devices on the system. Some platforms have more than one host available, e.g. wasapi/asio/dsound on windows, alsa/pulse/jack on linux and so on. As a result, some audio devices are only available on certain hosts, while others are only available on other hosts. Every platform supported by CPAL has at least one **DefaultHost** that is guaranteed to be available (alsa, wasapi and coreaudio). Currently, the default hosts are the only hosts supported by CPAL, however this will change as of landing #221 (cc @freesig). These changes should also accommodate support for other hosts such as jack #250 (cc @derekdreery) and pulseaudio (cc @knappador) #259. This introduces a suite of traits allowing for both compile time and runtime dispatch of different hosts and their uniquely associated device and event loop types. A new private **host** module has been added containing the individual host implementations, each in their own submodule gated to the platforms on which they are available. A new **platform** module has been added containing platform-specific items, including a dynamically dispatched host type that allows for easily switching between hosts at runtime. The **ALL_HOSTS** slice contains a **HostId** for each host supported on the current platform. The **available_hosts** function produces a **HostId** for each host that is currently *available* on the platform. The **host_from_id** function allows for initialising a host from its associated ID, failing with a **HostUnavailable** error. The **default_host** function returns the default host and should never fail. Please see the examples for a demonstration of the change in usage. For the most part, things look the same at the surface level, however the role of device enumeration and creating the event loop have been moved from global functions to host methods. The enumerate.rs example has been updated to enumerate all devices for each host, not just the default. **TODO** - [x] Add the new **Host** API - [x] Update examples for the new API. - [x] ALSA host - [ ] WASAPI host - [ ] CoreAudio host - [ ] Emscripten host **Follow-up PR** - [ ] ASIO host #221 cc @ishitatsuyuki more to review for you if you're interested, but it might be easier after #288 lands and this gets rebased.
2019-06-23 13:49:48 +00:00
//! # let host = cpal::default_host();
//! # let event_loop = host.event_loop();
//! # let device = host.default_output_device().unwrap();
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
//! # let format = device.supported_output_formats().unwrap().next().unwrap().with_max_sample_rate();
//! let stream_id = event_loop.build_output_stream(&device, &format).unwrap();
//! ```
//!
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
//! The value returned by `build_output_stream()` is of type `StreamId` and is an identifier that
//! will allow you to control the stream.
//!
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
//! Now we must start the stream. This is done with the `play_stream()` method on the event loop.
//!
//! ```no_run
//! # use cpal::traits::{EventLoopTrait, HostTrait};
[WIP] Introduce a `Host` API This is an implementation of the API described at #204. Please see that issue for more details on the motivation. ----- A **Host** provides access to the available audio devices on the system. Some platforms have more than one host available, e.g. wasapi/asio/dsound on windows, alsa/pulse/jack on linux and so on. As a result, some audio devices are only available on certain hosts, while others are only available on other hosts. Every platform supported by CPAL has at least one **DefaultHost** that is guaranteed to be available (alsa, wasapi and coreaudio). Currently, the default hosts are the only hosts supported by CPAL, however this will change as of landing #221 (cc @freesig). These changes should also accommodate support for other hosts such as jack #250 (cc @derekdreery) and pulseaudio (cc @knappador) #259. This introduces a suite of traits allowing for both compile time and runtime dispatch of different hosts and their uniquely associated device and event loop types. A new private **host** module has been added containing the individual host implementations, each in their own submodule gated to the platforms on which they are available. A new **platform** module has been added containing platform-specific items, including a dynamically dispatched host type that allows for easily switching between hosts at runtime. The **ALL_HOSTS** slice contains a **HostId** for each host supported on the current platform. The **available_hosts** function produces a **HostId** for each host that is currently *available* on the platform. The **host_from_id** function allows for initialising a host from its associated ID, failing with a **HostUnavailable** error. The **default_host** function returns the default host and should never fail. Please see the examples for a demonstration of the change in usage. For the most part, things look the same at the surface level, however the role of device enumeration and creating the event loop have been moved from global functions to host methods. The enumerate.rs example has been updated to enumerate all devices for each host, not just the default. **TODO** - [x] Add the new **Host** API - [x] Update examples for the new API. - [x] ALSA host - [ ] WASAPI host - [ ] CoreAudio host - [ ] Emscripten host **Follow-up PR** - [ ] ASIO host #221 cc @ishitatsuyuki more to review for you if you're interested, but it might be easier after #288 lands and this gets rebased.
2019-06-23 13:49:48 +00:00
//! # let host = cpal::default_host();
//! # let event_loop = host.event_loop();
//! # let stream_id = unimplemented!();
//! event_loop.play_stream(stream_id).expect("failed to play_stream");
//! ```
//!
//! Now everything is ready! We call `run()` on the `event_loop` to begin processing.
//!
//! ```no_run
//! # use cpal::traits::{EventLoopTrait, HostTrait};
[WIP] Introduce a `Host` API This is an implementation of the API described at #204. Please see that issue for more details on the motivation. ----- A **Host** provides access to the available audio devices on the system. Some platforms have more than one host available, e.g. wasapi/asio/dsound on windows, alsa/pulse/jack on linux and so on. As a result, some audio devices are only available on certain hosts, while others are only available on other hosts. Every platform supported by CPAL has at least one **DefaultHost** that is guaranteed to be available (alsa, wasapi and coreaudio). Currently, the default hosts are the only hosts supported by CPAL, however this will change as of landing #221 (cc @freesig). These changes should also accommodate support for other hosts such as jack #250 (cc @derekdreery) and pulseaudio (cc @knappador) #259. This introduces a suite of traits allowing for both compile time and runtime dispatch of different hosts and their uniquely associated device and event loop types. A new private **host** module has been added containing the individual host implementations, each in their own submodule gated to the platforms on which they are available. A new **platform** module has been added containing platform-specific items, including a dynamically dispatched host type that allows for easily switching between hosts at runtime. The **ALL_HOSTS** slice contains a **HostId** for each host supported on the current platform. The **available_hosts** function produces a **HostId** for each host that is currently *available* on the platform. The **host_from_id** function allows for initialising a host from its associated ID, failing with a **HostUnavailable** error. The **default_host** function returns the default host and should never fail. Please see the examples for a demonstration of the change in usage. For the most part, things look the same at the surface level, however the role of device enumeration and creating the event loop have been moved from global functions to host methods. The enumerate.rs example has been updated to enumerate all devices for each host, not just the default. **TODO** - [x] Add the new **Host** API - [x] Update examples for the new API. - [x] ALSA host - [ ] WASAPI host - [ ] CoreAudio host - [ ] Emscripten host **Follow-up PR** - [ ] ASIO host #221 cc @ishitatsuyuki more to review for you if you're interested, but it might be easier after #288 lands and this gets rebased.
2019-06-23 13:49:48 +00:00
//! # let host = cpal::default_host();
//! # let event_loop = host.event_loop();
//! event_loop.run(move |_stream_id, _stream_result| {
//! // react to stream events and read or write stream data here
//! });
//! ```
//!
//! > **Note**: Calling `run()` will block the thread forever, so it's usually best done in a
//! > separate thread.
//!
//! While `run()` is running, the audio device of the user will from time to time call the callback
//! that you passed to this function. The callback gets passed the stream ID and an instance of type
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
//! `StreamData` that represents the data that must be read from or written to. The inner
//! `UnknownTypeOutputBuffer` can be one of `I16`, `U16` or `F32` depending on the format that was
//! passed to `build_output_stream`.
//!
//! In this example, we simply fill the given output buffer with zeroes.
//!
//! ```no_run
//! use cpal::{StreamData, UnknownTypeOutputBuffer};
//! use cpal::traits::{EventLoopTrait, HostTrait};
[WIP] Introduce a `Host` API This is an implementation of the API described at #204. Please see that issue for more details on the motivation. ----- A **Host** provides access to the available audio devices on the system. Some platforms have more than one host available, e.g. wasapi/asio/dsound on windows, alsa/pulse/jack on linux and so on. As a result, some audio devices are only available on certain hosts, while others are only available on other hosts. Every platform supported by CPAL has at least one **DefaultHost** that is guaranteed to be available (alsa, wasapi and coreaudio). Currently, the default hosts are the only hosts supported by CPAL, however this will change as of landing #221 (cc @freesig). These changes should also accommodate support for other hosts such as jack #250 (cc @derekdreery) and pulseaudio (cc @knappador) #259. This introduces a suite of traits allowing for both compile time and runtime dispatch of different hosts and their uniquely associated device and event loop types. A new private **host** module has been added containing the individual host implementations, each in their own submodule gated to the platforms on which they are available. A new **platform** module has been added containing platform-specific items, including a dynamically dispatched host type that allows for easily switching between hosts at runtime. The **ALL_HOSTS** slice contains a **HostId** for each host supported on the current platform. The **available_hosts** function produces a **HostId** for each host that is currently *available* on the platform. The **host_from_id** function allows for initialising a host from its associated ID, failing with a **HostUnavailable** error. The **default_host** function returns the default host and should never fail. Please see the examples for a demonstration of the change in usage. For the most part, things look the same at the surface level, however the role of device enumeration and creating the event loop have been moved from global functions to host methods. The enumerate.rs example has been updated to enumerate all devices for each host, not just the default. **TODO** - [x] Add the new **Host** API - [x] Update examples for the new API. - [x] ALSA host - [ ] WASAPI host - [ ] CoreAudio host - [ ] Emscripten host **Follow-up PR** - [ ] ASIO host #221 cc @ishitatsuyuki more to review for you if you're interested, but it might be easier after #288 lands and this gets rebased.
2019-06-23 13:49:48 +00:00
//! # let host = cpal::default_host();
//! # let event_loop = host.event_loop();
//! event_loop.run(move |stream_id, stream_result| {
//! let stream_data = match stream_result {
//! Ok(data) => data,
//! Err(err) => {
//! eprintln!("an error occurred on stream {:?}: {}", stream_id, err);
//! return;
//! }
//! _ => return,
//! };
//!
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
//! match stream_data {
//! StreamData::Output { buffer: UnknownTypeOutputBuffer::U16(mut buffer) } => {
//! for elem in buffer.iter_mut() {
//! *elem = u16::max_value() / 2;
//! }
//! },
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
//! StreamData::Output { buffer: UnknownTypeOutputBuffer::I16(mut buffer) } => {
//! for elem in buffer.iter_mut() {
//! *elem = 0;
//! }
//! },
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
//! StreamData::Output { buffer: UnknownTypeOutputBuffer::F32(mut buffer) } => {
//! for elem in buffer.iter_mut() {
//! *elem = 0.0;
//! }
//! },
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
//! _ => (),
//! }
//! });
//! ```
2016-08-02 14:13:59 +00:00
#![recursion_limit = "512"]
extern crate failure;
#[cfg(target_os = "windows")]
#[macro_use]
extern crate lazy_static;
// Extern crate declarations with `#[macro_use]` must unfortunately be at crate root.
#[cfg(target_os = "emscripten")]
#[macro_use]
extern crate stdweb;
pub use platform::{
ALL_HOSTS, Device, Devices, EventLoop, Host, HostId, SupportedInputFormats,
SupportedOutputFormats, StreamId, available_hosts, default_host, host_from_id,
};
2017-10-11 11:24:49 +00:00
pub use samples_formats::{Sample, SampleFormat};
2014-12-17 07:47:19 +00:00
use failure::Fail;
2015-01-05 09:52:59 +00:00
use std::ops::{Deref, DerefMut};
[WIP] Introduce a `Host` API This is an implementation of the API described at #204. Please see that issue for more details on the motivation. ----- A **Host** provides access to the available audio devices on the system. Some platforms have more than one host available, e.g. wasapi/asio/dsound on windows, alsa/pulse/jack on linux and so on. As a result, some audio devices are only available on certain hosts, while others are only available on other hosts. Every platform supported by CPAL has at least one **DefaultHost** that is guaranteed to be available (alsa, wasapi and coreaudio). Currently, the default hosts are the only hosts supported by CPAL, however this will change as of landing #221 (cc @freesig). These changes should also accommodate support for other hosts such as jack #250 (cc @derekdreery) and pulseaudio (cc @knappador) #259. This introduces a suite of traits allowing for both compile time and runtime dispatch of different hosts and their uniquely associated device and event loop types. A new private **host** module has been added containing the individual host implementations, each in their own submodule gated to the platforms on which they are available. A new **platform** module has been added containing platform-specific items, including a dynamically dispatched host type that allows for easily switching between hosts at runtime. The **ALL_HOSTS** slice contains a **HostId** for each host supported on the current platform. The **available_hosts** function produces a **HostId** for each host that is currently *available* on the platform. The **host_from_id** function allows for initialising a host from its associated ID, failing with a **HostUnavailable** error. The **default_host** function returns the default host and should never fail. Please see the examples for a demonstration of the change in usage. For the most part, things look the same at the surface level, however the role of device enumeration and creating the event loop have been moved from global functions to host methods. The enumerate.rs example has been updated to enumerate all devices for each host, not just the default. **TODO** - [x] Add the new **Host** API - [x] Update examples for the new API. - [x] ALSA host - [ ] WASAPI host - [ ] CoreAudio host - [ ] Emscripten host **Follow-up PR** - [ ] ASIO host #221 cc @ishitatsuyuki more to review for you if you're interested, but it might be easier after #288 lands and this gets rebased.
2019-06-23 13:49:48 +00:00
mod host;
pub mod platform;
2014-12-17 07:47:19 +00:00
mod samples_formats;
pub mod traits;
[WIP] Introduce a `Host` API This is an implementation of the API described at #204. Please see that issue for more details on the motivation. ----- A **Host** provides access to the available audio devices on the system. Some platforms have more than one host available, e.g. wasapi/asio/dsound on windows, alsa/pulse/jack on linux and so on. As a result, some audio devices are only available on certain hosts, while others are only available on other hosts. Every platform supported by CPAL has at least one **DefaultHost** that is guaranteed to be available (alsa, wasapi and coreaudio). Currently, the default hosts are the only hosts supported by CPAL, however this will change as of landing #221 (cc @freesig). These changes should also accommodate support for other hosts such as jack #250 (cc @derekdreery) and pulseaudio (cc @knappador) #259. This introduces a suite of traits allowing for both compile time and runtime dispatch of different hosts and their uniquely associated device and event loop types. A new private **host** module has been added containing the individual host implementations, each in their own submodule gated to the platforms on which they are available. A new **platform** module has been added containing platform-specific items, including a dynamically dispatched host type that allows for easily switching between hosts at runtime. The **ALL_HOSTS** slice contains a **HostId** for each host supported on the current platform. The **available_hosts** function produces a **HostId** for each host that is currently *available* on the platform. The **host_from_id** function allows for initialising a host from its associated ID, failing with a **HostUnavailable** error. The **default_host** function returns the default host and should never fail. Please see the examples for a demonstration of the change in usage. For the most part, things look the same at the surface level, however the role of device enumeration and creating the event loop have been moved from global functions to host methods. The enumerate.rs example has been updated to enumerate all devices for each host, not just the default. **TODO** - [x] Add the new **Host** API - [x] Update examples for the new API. - [x] ALSA host - [ ] WASAPI host - [ ] CoreAudio host - [ ] Emscripten host **Follow-up PR** - [ ] ASIO host #221 cc @ishitatsuyuki more to review for you if you're interested, but it might be easier after #288 lands and this gets rebased.
2019-06-23 13:49:48 +00:00
/// A host's device iterator yielding only *input* devices.
pub type InputDevices<I> = std::iter::Filter<I, fn(&<I as Iterator>::Item) -> bool>;
/// A host's device iterator yielding only *output* devices.
pub type OutputDevices<I> = std::iter::Filter<I, fn(&<I as Iterator>::Item) -> bool>;
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
/// Number of channels.
pub type ChannelCount = u16;
/// The number of samples processed per second for a single channel of audio.
#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
pub struct SampleRate(pub u32);
/// The format of an input or output audio stream.
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct Format {
pub channels: ChannelCount,
pub sample_rate: SampleRate,
pub data_type: SampleFormat,
}
/// Describes a range of supported stream formats.
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct SupportedFormat {
pub channels: ChannelCount,
/// Minimum value for the samples rate of the supported formats.
pub min_sample_rate: SampleRate,
/// Maximum value for the samples rate of the supported formats.
pub max_sample_rate: SampleRate,
/// Type of data expected by the device.
pub data_type: SampleFormat,
}
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
/// Stream data passed to the `EventLoop::run` callback.
pub enum StreamData<'a> {
Input {
buffer: UnknownTypeInputBuffer<'a>,
},
Output {
buffer: UnknownTypeOutputBuffer<'a>,
},
}
/// Stream data passed to the `EventLoop::run` callback, or an error in the case that the device
/// was invalidated or some backend-specific error occurred.
pub type StreamDataResult<'a> = Result<StreamData<'a>, StreamError>;
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
/// Represents a buffer containing audio data that may be read.
///
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
/// This struct implements the `Deref` trait targeting `[T]`. Therefore this buffer can be read the
/// same way as reading from a `Vec` or any other kind of Rust array.
// TODO: explain audio stuff in general
// TODO: remove the wrapper and just use slices in next major version
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
pub struct InputBuffer<'a, T: 'a>
where
T: Sample,
{
buffer: &'a [T],
}
/// Represents a buffer that must be filled with audio data. The buffer in unfilled state may
/// contain garbage values.
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
///
/// This struct implements the `Deref` and `DerefMut` traits to `[T]`. Therefore writing to this
/// buffer is done in the same way as writing to a `Vec` or any other kind of Rust array.
// TODO: explain audio stuff in general
// TODO: remove the wrapper and just use slices
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
#[must_use]
pub struct OutputBuffer<'a, T: 'a>
where
T: Sample,
{
buffer: &'a mut [T],
}
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
/// This is the struct that is provided to you by cpal when you want to read samples from a buffer.
///
/// Since the type of data is only known at runtime, you have to read the right buffer.
pub enum UnknownTypeInputBuffer<'a> {
/// Samples whose format is `u16`.
U16(InputBuffer<'a, u16>),
/// Samples whose format is `i16`.
I16(InputBuffer<'a, i16>),
/// Samples whose format is `f32`.
F32(InputBuffer<'a, f32>),
}
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
/// This is the struct that is provided to you by cpal when you want to write samples to a buffer.
///
/// Since the type of data is only known at runtime, you have to fill the right buffer.
pub enum UnknownTypeOutputBuffer<'a> {
/// Samples whose format is `u16`.
U16(OutputBuffer<'a, u16>),
/// Samples whose format is `i16`.
I16(OutputBuffer<'a, i16>),
/// Samples whose format is `f32`.
F32(OutputBuffer<'a, f32>),
}
[WIP] Introduce a `Host` API This is an implementation of the API described at #204. Please see that issue for more details on the motivation. ----- A **Host** provides access to the available audio devices on the system. Some platforms have more than one host available, e.g. wasapi/asio/dsound on windows, alsa/pulse/jack on linux and so on. As a result, some audio devices are only available on certain hosts, while others are only available on other hosts. Every platform supported by CPAL has at least one **DefaultHost** that is guaranteed to be available (alsa, wasapi and coreaudio). Currently, the default hosts are the only hosts supported by CPAL, however this will change as of landing #221 (cc @freesig). These changes should also accommodate support for other hosts such as jack #250 (cc @derekdreery) and pulseaudio (cc @knappador) #259. This introduces a suite of traits allowing for both compile time and runtime dispatch of different hosts and their uniquely associated device and event loop types. A new private **host** module has been added containing the individual host implementations, each in their own submodule gated to the platforms on which they are available. A new **platform** module has been added containing platform-specific items, including a dynamically dispatched host type that allows for easily switching between hosts at runtime. The **ALL_HOSTS** slice contains a **HostId** for each host supported on the current platform. The **available_hosts** function produces a **HostId** for each host that is currently *available* on the platform. The **host_from_id** function allows for initialising a host from its associated ID, failing with a **HostUnavailable** error. The **default_host** function returns the default host and should never fail. Please see the examples for a demonstration of the change in usage. For the most part, things look the same at the surface level, however the role of device enumeration and creating the event loop have been moved from global functions to host methods. The enumerate.rs example has been updated to enumerate all devices for each host, not just the default. **TODO** - [x] Add the new **Host** API - [x] Update examples for the new API. - [x] ALSA host - [ ] WASAPI host - [ ] CoreAudio host - [ ] Emscripten host **Follow-up PR** - [ ] ASIO host #221 cc @ishitatsuyuki more to review for you if you're interested, but it might be easier after #288 lands and this gets rebased.
2019-06-23 13:49:48 +00:00
/// The requested host, although supported on this platform, is unavailable.
#[derive(Clone, Debug, Fail)]
#[fail(display = "the requested host is unavailable")]
pub struct HostUnavailable;
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
/// Some error has occurred that is specific to the backend from which it was produced.
///
/// This error is often used as a catch-all in cases where:
///
/// - It is unclear exactly what error might be produced by the backend API.
/// - It does not make sense to add a variant to the enclosing error type.
/// - No error was expected to occur at all, but we return an error to avoid the possibility of a
/// `panic!` caused by some unforseen or unknown reason.
///
/// **Note:** If you notice a `BackendSpecificError` that you believe could be better handled in a
/// cross-platform manner, please create an issue or submit a pull request with a patch that adds
/// the necessary error variant to the appropriate error enum.
#[derive(Clone, Debug, Fail)]
#[fail(display = "A backend-specific error has occurred: {}", description)]
pub struct BackendSpecificError {
pub description: String
}
/// An error that might occur while attempting to enumerate the available devices on a system.
#[derive(Debug, Fail)]
pub enum DevicesError {
/// See the `BackendSpecificError` docs for more information about this error variant.
#[fail(display = "{}", err)]
BackendSpecific {
#[fail(cause)]
err: BackendSpecificError,
}
}
/// An error that may occur while attempting to retrieve a device name.
#[derive(Debug, Fail)]
pub enum DeviceNameError {
/// See the `BackendSpecificError` docs for more information about this error variant.
#[fail(display = "{}", err)]
BackendSpecific {
#[fail(cause)]
err: BackendSpecificError,
}
}
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
/// Error that can happen when enumerating the list of supported formats.
#[derive(Debug, Fail)]
pub enum SupportedFormatsError {
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
/// The device no longer exists. This can happen if the device is disconnected while the
/// program is running.
#[fail(display = "The requested device is no longer available. For example, it has been unplugged.")]
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
DeviceNotAvailable,
/// We called something the C-Layer did not understand
#[fail(display = "Invalid argument passed to the backend. For example, this happens when trying to read capture capabilities when the device does not support it.")]
InvalidArgument,
/// See the `BackendSpecificError` docs for more information about this error variant.
#[fail(display = "{}", err)]
BackendSpecific {
#[fail(cause)]
err: BackendSpecificError,
}
2015-09-01 11:53:54 +00:00
}
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
/// May occur when attempting to request the default input or output stream format from a `Device`.
#[derive(Debug, Fail)]
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
pub enum DefaultFormatError {
/// The device no longer exists. This can happen if the device is disconnected while the
/// program is running.
#[fail(display = "The requested device is no longer available. For example, it has been unplugged.")]
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
DeviceNotAvailable,
/// Returned if e.g. the default input format was requested on an output-only audio device.
#[fail(display = "The requested stream type is not supported by the device.")]
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
StreamTypeNotSupported,
/// See the `BackendSpecificError` docs for more information about this error variant.
#[fail(display = "{}", err)]
BackendSpecific {
#[fail(cause)]
err: BackendSpecificError,
}
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
}
/// Error that can happen when creating a `Stream`.
#[derive(Debug, Fail)]
pub enum BuildStreamError {
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
/// The device no longer exists. This can happen if the device is disconnected while the
/// program is running.
#[fail(display = "The requested device is no longer available. For example, it has been unplugged.")]
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
DeviceNotAvailable,
/// The required format is not supported.
#[fail(display = "The requested stream format is not supported by the device.")]
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
FormatNotSupported,
/// We called something the C-Layer did not understand
///
/// On ALSA device functions called with a feature they do not support will yield this. E.g.
/// Trying to use capture capabilities on an output only format yields this.
#[fail(display = "The requested device does not support this capability (invalid argument)")]
InvalidArgument,
/// Occurs if adding a new Stream ID would cause an integer overflow.
#[fail(display = "Adding a new stream ID would cause an overflow")]
StreamIdOverflow,
/// See the `BackendSpecificError` docs for more information about this error variant.
#[fail(display = "{}", err)]
BackendSpecific {
#[fail(cause)]
err: BackendSpecificError,
}
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
}
2015-09-01 11:53:54 +00:00
/// Errors that might occur when calling `play_stream`.
///
/// As of writing this, only macOS may immediately return an error while calling this method. This
/// is because both the alsa and wasapi backends only enqueue these commands and do not process
/// them immediately.
#[derive(Debug, Fail)]
pub enum PlayStreamError {
/// The device associated with the stream is no longer available.
#[fail(display = "the device associated with the stream is no longer available")]
DeviceNotAvailable,
/// See the `BackendSpecificError` docs for more information about this error variant.
#[fail(display = "{}", err)]
BackendSpecific {
#[fail(cause)]
err: BackendSpecificError,
}
}
/// Errors that might occur when calling `pause_stream`.
///
/// As of writing this, only macOS may immediately return an error while calling this method. This
/// is because both the alsa and wasapi backends only enqueue these commands and do not process
/// them immediately.
#[derive(Debug, Fail)]
pub enum PauseStreamError {
/// The device associated with the stream is no longer available.
#[fail(display = "the device associated with the stream is no longer available")]
DeviceNotAvailable,
/// See the `BackendSpecificError` docs for more information about this error variant.
#[fail(display = "{}", err)]
BackendSpecific {
#[fail(cause)]
err: BackendSpecificError,
}
}
/// Errors that might occur while a stream is running.
#[derive(Debug, Fail)]
pub enum StreamError {
/// The device no longer exists. This can happen if the device is disconnected while the
/// program is running.
#[fail(display = "The requested device is no longer available. For example, it has been unplugged.")]
DeviceNotAvailable,
/// See the `BackendSpecificError` docs for more information about this error variant.
#[fail(display = "{}", err)]
BackendSpecific {
#[fail(cause)]
err: BackendSpecificError,
}
}
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
impl SupportedFormat {
/// Turns this `SupportedFormat` into a `Format` corresponding to the maximum samples rate.
#[inline]
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
pub fn with_max_sample_rate(self) -> Format {
Format {
channels: self.channels,
sample_rate: self.max_sample_rate,
data_type: self.data_type,
}
}
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
/// A comparison function which compares two `SupportedFormat`s in terms of their priority of
/// use as a default stream format.
///
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
/// Some backends do not provide a default stream format for their audio devices. In these
/// cases, CPAL attempts to decide on a reasonable default format for the user. To do this we
/// use the "greatest" of all supported stream formats when compared with this method.
///
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
/// Formats are prioritised by the following heuristics:
///
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
/// **Channels**:
///
/// - Stereo
/// - Mono
/// - Max available channels
///
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
/// **Sample format**:
/// - f32
/// - i16
/// - u16
///
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
/// **Sample rate**:
///
/// - 44100 (cd quality)
/// - Max sample rate
pub fn cmp_default_heuristics(&self, other: &Self) -> std::cmp::Ordering {
use std::cmp::Ordering::Equal;
use SampleFormat::{F32, I16, U16};
let cmp_stereo = (self.channels == 2).cmp(&(other.channels == 2));
if cmp_stereo != Equal {
return cmp_stereo;
}
let cmp_mono = (self.channels == 1).cmp(&(other.channels == 1));
if cmp_mono != Equal {
return cmp_mono;
}
let cmp_channels = self.channels.cmp(&other.channels);
if cmp_channels != Equal {
return cmp_channels;
}
let cmp_f32 = (self.data_type == F32).cmp(&(other.data_type == F32));
if cmp_f32 != Equal {
return cmp_f32;
}
let cmp_i16 = (self.data_type == I16).cmp(&(other.data_type == I16));
if cmp_i16 != Equal {
return cmp_i16;
}
let cmp_u16 = (self.data_type == U16).cmp(&(other.data_type == U16));
if cmp_u16 != Equal {
return cmp_u16;
}
const HZ_44100: SampleRate = SampleRate(44_100);
let r44100_in_self = self.min_sample_rate <= HZ_44100
&& HZ_44100 <= self.max_sample_rate;
let r44100_in_other = other.min_sample_rate <= HZ_44100
&& HZ_44100 <= other.max_sample_rate;
let cmp_r44100 = r44100_in_self.cmp(&r44100_in_other);
if cmp_r44100 != Equal {
return cmp_r44100;
}
self.max_sample_rate.cmp(&other.max_sample_rate)
}
}
impl<'a, T> Deref for InputBuffer<'a, T>
where T: Sample
{
type Target = [T];
#[inline]
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
fn deref(&self) -> &[T] {
self.buffer
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
}
}
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
impl<'a, T> Deref for OutputBuffer<'a, T>
where T: Sample
{
type Target = [T];
#[inline]
fn deref(&self) -> &[T] {
self.buffer
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
}
}
impl<'a, T> DerefMut for OutputBuffer<'a, T>
where T: Sample
{
#[inline]
fn deref_mut(&mut self) -> &mut [T] {
self.buffer
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
}
}
impl<'a> UnknownTypeInputBuffer<'a> {
2015-09-10 19:21:46 +00:00
/// Returns the length of the buffer in number of samples.
2015-09-11 08:55:29 +00:00
#[inline]
2015-09-10 19:21:46 +00:00
pub fn len(&self) -> usize {
match self {
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
&UnknownTypeInputBuffer::U16(ref buf) => buf.len(),
&UnknownTypeInputBuffer::I16(ref buf) => buf.len(),
&UnknownTypeInputBuffer::F32(ref buf) => buf.len(),
2015-09-10 19:21:46 +00:00
}
}
}
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
impl<'a> UnknownTypeOutputBuffer<'a> {
/// Returns the length of the buffer in number of samples.
#[inline]
pub fn len(&self) -> usize {
match self {
&UnknownTypeOutputBuffer::U16(ref buf) => buf.len(),
&UnknownTypeOutputBuffer::I16(ref buf) => buf.len(),
&UnknownTypeOutputBuffer::F32(ref buf) => buf.len(),
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
}
}
}
impl From<Format> for SupportedFormat {
#[inline]
fn from(format: Format) -> SupportedFormat {
SupportedFormat {
channels: format.channels,
min_sample_rate: format.sample_rate,
max_sample_rate: format.sample_rate,
data_type: format.data_type,
}
}
}
impl From<BackendSpecificError> for DevicesError {
fn from(err: BackendSpecificError) -> Self {
DevicesError::BackendSpecific { err }
}
}
impl From<BackendSpecificError> for DeviceNameError {
fn from(err: BackendSpecificError) -> Self {
DeviceNameError::BackendSpecific { err }
}
}
impl From<BackendSpecificError> for SupportedFormatsError {
fn from(err: BackendSpecificError) -> Self {
SupportedFormatsError::BackendSpecific { err }
}
}
impl From<BackendSpecificError> for DefaultFormatError {
fn from(err: BackendSpecificError) -> Self {
DefaultFormatError::BackendSpecific { err }
}
}
impl From<BackendSpecificError> for BuildStreamError {
fn from(err: BackendSpecificError) -> Self {
BuildStreamError::BackendSpecific { err }
}
}
impl From<BackendSpecificError> for PlayStreamError {
fn from(err: BackendSpecificError) -> Self {
PlayStreamError::BackendSpecific { err }
}
}
impl From<BackendSpecificError> for PauseStreamError {
fn from(err: BackendSpecificError) -> Self {
PauseStreamError::BackendSpecific { err }
}
}
impl From<BackendSpecificError> for StreamError {
fn from(err: BackendSpecificError) -> Self {
StreamError::BackendSpecific { err }
}
}
Update to a more general Device and Stream API. Add support for input streams (E.g. microphone). Add default format methods. (#201) * Update to a more general Device and Stream API This update prepares for adding input stream support by removing the `Endpoint` type (which only supports output streams) in favour of a more general `Device` type which may support any number of input or output streams. Previously discussed at #117. The name `Voice` has been replaced with the more ubiquitous name `Stream`. See #118 for justification. Also introduces a new `StreamData` which is now passed to the `EventLoop::run` callback rather than the `UnknownTypeBuffer`. `StreamData` allows for passing either `Input` data to be read, or `Output` data to be written. The `beep.rs` example has been updated for the API changes. None of the backends have been updated for this API change yet. Backends will be updated in the following commits. Closes #117. Closes #118. * Update ALSA backend for new `Device` and `Stream` API. * Update wasapi backend for new `Device` and `Stream` API. * Update enumerate.rs example for new `Device` and `Stream` API. * Update coreaudio backend for new `Device` and `Stream` API. * Fix lib doc tests for Device and Stream API update * Update emscripten backend for new `Device` and `Stream` API. * Update null backend for new `Device` and `Stream` API. * Merge match exprs in beep.rs example * Add Input variant along with UnknownTypeInputBuffer and InputBuffer UnknownTypeBuffer and Buffer have been renamed to UnknownTypeOutputBuffer and OutputBuffer respectively. No backends have yet been updated for this name change or the addition of the InputBuffer. * Update null backend for introduction of InputBuffer * Update emscripten backend for introduction of InputBuffer * Make InputBuffer inner field an option to call finish in drop * Update alsa backend for introduction of InputBuffer * Update wasapi backend for introduction of InputBuffer * Update coreaudio backend for introduction of InputBuffer * Update enumerate.rs example to provide more detail about devices The enumerate.rs example now also displays: - Supported input stream formats. - Default input stream format. - Default output stream format. This should also be useful for testing the progress of #201. * Add `record_wav.rs` example for demonstrating input streams Records a ~3 second WAV file to `$CARGO_MANIFEST_DIR/recorded.wav` using the default input device and default input format. Uses hound 3.0 to create and write to the WAV file. This should also be useful for testing the input stream implementations for each different cpal backend. * Implement input stream support for coreaudio backend This implements the following for the coreaudio backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream The `enumerate.rs` and `record_wav.rs` examples now work successfully on macos. * Add `SupportedFormat::cmp_default_heuristics` method This adds a comparison function which compares two `SupportedFormat`s in terms of their priority of use as a default stream format. Some backends (such as ALSA) do not provide a default stream format for their audio devices. In these cases, CPAL attempts to decide on a reasonable default format for the user. To do this we use the "greatest" of all supported stream formats when compared with this method. * Implement input stream support for ALSA backend This implements the following for the ALSA backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that ALSA itself does not give default stream formats for its devices. Thus the newly added `SupportedFormat::cmp_default_heuristics` method is used to determine the most suitable, supported stream format to use as the default. The `enumerate.rs` and `record_wav.rs` examples now work successfully on my linux machine. * Implement input stream support for wasapi backend This implements the following for the wasapi backend: - Device::supported_input_formats - Device::default_input_format - Device::default_output_format - EventLoop::build_input_stream Note that wasapi does not enumerate supported input/output stream formats for its devices. Instead, we query the `IsFormatSupported` method for supported formats ourselves. * Fix some warnings in the alsa backend * Update CHANGELOG for introduction of input streams and related items * Update README to show latest features supported by CPAL * Simplify beep example using Device::default_output_format * Remove old commented code from wasapi/stream.rs
2018-02-12 13:10:24 +00:00
// If a backend does not provide an API for retrieving supported formats, we query it with a bunch
// of commonly used rates. This is always the case for wasapi and is sometimes the case for alsa.
//
// If a rate you desire is missing from this list, feel free to add it!
#[cfg(target_os = "windows")]
const COMMON_SAMPLE_RATES: &'static [SampleRate] = &[
SampleRate(5512),
SampleRate(8000),
SampleRate(11025),
SampleRate(16000),
SampleRate(22050),
SampleRate(32000),
SampleRate(44100),
SampleRate(48000),
SampleRate(64000),
SampleRate(88200),
SampleRate(96000),
SampleRate(176400),
SampleRate(192000),
];