Please see the CHANGELOG diff below for an overview of changes included
in this release.
You can find the full code diff [here](391b32f5b2...master).
Thanks to all who have contributed! CPAL has come a long way thanks to
the combined effort of many different people!
To compensate for the removal of `failure`'s application friendly
`failure::Error` trait, this `anyhow` crate has been added as a
dev-dependency for the examples, but is by no means a necessity for
other crates downstream of CPAL.
Currently CPAL only really uses `failure` for its `derive` capabilities
and the ability to easily generate implementations for `Display`. That
said there are a few issues with using the `failure` crate:
- `failure` does not provie a `std::error::Error` implementation without
first converting error types into `failure::Error`.
- It leaks significantly into the public API and expects downstream
users to also depend on `failure` and the non-std `Fail` trait for
their own error handling.
- Solved problems such as downcasting of causal errors which have since
been addressed in `std`.
- Provides application-friendly `Fail` trait and `failure::Error` type,
not particularly useful to libraries like CPAL.
The [`thiserror` crate](https://github.com/dtolnay/thiserror) is better
targeted towards libraries, does not leak into the public API while
providing easy generation of `Display`, `From` and `std::error::Error`
implementations including proper handling of the newish
`std::error::Error::source` method.
When using cpal as dependency in other project, it was found that cpal
won't build due to unresolved import of winapi::um::winbase. Added the
feature at line 24 in Cargo.toml.
This is quite a significant update for CPAL, including a number of
breaking changes. Here is a list of the breaking changes along with
links to where you can find more information:
- A `Host` API has been introduced in #289 along with a follow-up
refactor in #295. Please see the examples for a demonstration of how
to update your code. The necessary changes should hopefully be
minimal. If this has caused you any major difficulty please let us
know in an issue!
- An ASIO host has been introduced in #292. This adds support for
Steinberg's ASIO audio driver API on Windows. Please see the ASIO
section of the README for more information on how to setup CPAL with
ASIO support for your project.
- The user callback API has been overhauled to emit `StreamEvent`s
rather than buffers in order to support handling stream errors. #288.
- Error handling in general was overhauled in #286. This meant taking
advantage of the `failure` crate and adding support for
backend-specific errors with custom messages. Many unnecessary
`panic!`s have been removed, but a few remain that would indicate bugs
in CPAL.
In general, checking out the updated examples will be the easiest way to
get a quick overview on how you can update your own code for these
changes.
The CHANGELOG.md has been updated to include these changes.
* [coreaudio] Fix handling of non-default sample rates for input streams
Currently when building an input stream the coreaudio backend only
specifies the sample rate for the audio unit, however coreaudio requires
that the audio unit sample rate matches the device sample rate.
This changes the `build_input_stream` behaviour to:
1. Check if the device sample rate differs from the desired one.
2. If so, check that there are no existing audio units using the device
at the current sample rate. If there are, panic with a message
explaining why.
3. Otherwise, change the device sample rate.
4. Continue building the input stream audio unit as normal.
Closes#213.
* Update CHANGELOG for coreaudio input stream sample rate fix
* Publish 0.8.1 for coreaudio input stream sample rate fix
* 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
Adds only the necessary cargo features to reduce compile time and reduce
the chance of linking errors occurring for unused libraries (e.g.
d3d12.dll fails to link on my win10 VM).
I thought I'd try and land this before before working on the wasapi
backend implementation for #201.
Tested both beep.rs and enumerate.rs and they work fine with the update.
Based on #195.
Also implements proper handling of the given `Endpoint` in the
macos implementation of the `build_voice` method.
Updates to the latest coreaudio-sys and coreaudio-rs which include the
additional necessary frameworks.
Also adds a line that prints the name of the default device in the
`enumeration.rs` example.
Updates the CHANGELOG for this PR.
Closes#194.
Related to #180.
Related external issues:
- RustAudio/coreaudio-sys#4
- RustAudio/coreaudio-rs#57
There does not seem to be any major API breakage, however the emscripten
and macos backends have been pretty heavily refactored so I thought it
best to bump to 0.6 (rather than 0.5.2) just in case there is any subtle
behavioural breakage. Happy to change this to 0.5.2 though if someone
can confirm there will be no downstream breakage.
* Use the js! macro from stdweb
* Rework the Buffer::finish method
* Use references from stdweb
* Fix emscripten warnings
* Rework the run() method to use stdweb
* Adjust timings
* Add entry in CHANGELOG
* Rework the API to not use futures anymore
* Add some comments
* Update the MacOS backend
* Restore the null implementation
* Add an emscripten backend
* Remove erroneously added feature
* Fix to_f32 formula
* [WIP] Alsa backend
* Alsa backend compiling
* Working ALSA backend
* Fix tests
* Move WASAPI endpoint to endpoint module
* Fix WASAPI warnings
* Rework the WASAPI backend
* Check overflows for voice ID
* Add comments and minor fixes to WASAPI backend
* Add a changelog
Damian Peckett
mitchmindtree
JoshuaBatty
Alex Moon
Jan Beich
msiglreith
Hatchling
Mitchell Hentges
Tom Gowan
Tom Gowan
DMSDeveloper
Jake Shadle
Austin Johnson
Jacob Kiesel
Pierre Krieger
egnehots
Nikita Chashchinskii
jwestfall
ferris