I think this is mostly complete, however there are two major TODOs:
- There seems to be a bug where timestamps are not reported when the
target device is `pulse`. This causes a `panic!` as the trigger
timestamp should always precede the timestamp when retrieved while the
stream is running.
- We need to specify the timestamp type as MONOTONIC_RAW, however the
`alsa` and `alsa-sys` crates do not yet expose the necessary
`set_tstamp_type` function.
I began on an implementation of the timestamp API described in #363 but
quickly realised that it might be best to land the API for providing
extra information to the user's callback first.
This PR adds two new types: `InputCallbackInfo` and `OutputCallbackInfo`.
These types are delivered to the user's data callback as a new, second
argument.
While these types are currently empty, the intention is for these types
to provide information relevant to the current request for or delivery
of data. This includes:
- Timestamp information #363.
- Flags related to the state of the stream (e.g buffer
underflow/overflow).
In order to maintain flexibility to avoid breaking things, I figure we
can keep the fields of these types private and provide methods for
retrieving this info.
@Ralith, @ishitatsuyuki does this seem OK to you?
This should give the user a higher confidence that, if they have a
`SupportedStreamConfig` format type that it is actually supported.
Also updates the `raw` stream builder methods to take a `StreamConfig`
and `SampleFormat` as separate arguments for flexibility.
**Backends Updated**
- [x] null
- [x] alsa
- [ ] emscripten
- [ ] coreaudio
- [ ] wasapi
- [ ] asio
This implements the changes described at #370.
This commit implements only the `null` and `alsa` backends - the rest
will be implemented in follow-up commits.
Closes#370.
Seeing as a few large refactors have landed recently, I thought I'd take
this opportunity to do a `cargo fmt` run and standardise on the default
rustfmt settings.
This is a potential alternative to #359. This PR is based on #359.
This approach opts for a dynamically checked sample type approach with
the aim of minimising compile time and binary size.
You can read more discussion on this [here](https://github.com/RustAudio/cpal/pull/359#issuecomment-575931461)
Implemented backends:
- [x] null
- [x] ALSA
- [ ] CoreAudio
- [ ] WASAPI
- [ ] ASIO
- [ ] Emscripten
This is an implementation of the planned changes described in #119.
For a quick overview of how the API has changed, check out the updated
examples.
**TODO:**
- [x] Update API.
- [x] Update examples.
- [ ] Remove `data_type` field from `Format` (see [here](https://github.com/RustAudio/cpal/issues/119#issuecomment-573788380)).
- Update backends:
- [x] null
- [x] ALSA
- [ ] ASIO
- [ ] WASAPI
- [ ] CoreAudio
- [ ] Emscripten
Closes#119Closes#260
- Shares the `Device`'s `driver` and `asio_streams` `Arc`s with the
`Stream`s to ensure they remain valid if the `Host` or `Device` are
dropped early.
- Ensures that a stream's callback is removed upon `Drop`.
For the most part, behaviour should be largely unchanged, however each
individual stream now has its own `set_timeout` callback loop, rather
than using one for processing all streams at once.
Many TODOs remain within the `emscripten` backend. These were left
untouched for the most part in favour of addressing this in a more
web-focused, future PR.
mitchmindtree
Richard Dodd
Alex Moon
Benjamin Saunders
Jan Beich
msiglreith
Viktor Lazarev
Tatsuyuki Ishi