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Sink: pass ownership of the packet on write()

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Prevent a copy if the implementation needs to keep the data around.
This commit is contained in:
Guillaume Desmottes 2021-12-29 16:26:24 +01:00
parent b1bdf1d7f2
commit f09be4850e
7 changed files with 17 additions and 16 deletions
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1
CHANGELOG.md
View file

@ -13,6 +13,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
- [playback] `alsa`: Improve `--device ?` functionality for the alsa backend.
- [contrib] Hardened security of the systemd service units
- [main] Verbose logging mode (`-v`, `--verbose`) now logs all parsed environment variables and command line arguments (credentials are redacted).
- [playback] `Sink`: `write()` now receives ownership of the packet (breaking).
### Added
- [cache] Add `disable-credential-cache` flag (breaking).

2
playback/src/audio_backend/jackaudio.rs
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@ -66,7 +66,7 @@ impl Open for JackSink {
}
impl Sink for JackSink {
fn write(&mut self, packet: &AudioPacket, converter: &mut Converter) -> SinkResult<()> {
fn write(&mut self, packet: AudioPacket, converter: &mut Converter) -> SinkResult<()> {
let samples = packet
.samples()
.map_err(|e| SinkError::OnWrite(e.to_string()))?;

16
playback/src/audio_backend/mod.rs
View file

@ -28,7 +28,7 @@ pub trait Sink {
fn stop(&mut self) -> SinkResult<()> {
Ok(())
}
fn write(&mut self, packet: &AudioPacket, converter: &mut Converter) -> SinkResult<()>;
fn write(&mut self, packet: AudioPacket, converter: &mut Converter) -> SinkResult<()>;
}
pub type SinkBuilder = fn(Option<String>, AudioFormat) -> Box<dyn Sink>;
@ -44,34 +44,34 @@ fn mk_sink<S: Sink + Open + 'static>(device: Option<String>, format: AudioFormat
// reuse code for various backends
macro_rules! sink_as_bytes {
() => {
fn write(&mut self, packet: &AudioPacket, converter: &mut Converter) -> SinkResult<()> {
fn write(&mut self, packet: AudioPacket, converter: &mut Converter) -> SinkResult<()> {
use crate::convert::i24;
use zerocopy::AsBytes;
match packet {
AudioPacket::Samples(samples) => match self.format {
AudioFormat::F64 => self.write_bytes(samples.as_bytes()),
AudioFormat::F32 => {
let samples_f32: &[f32] = &converter.f64_to_f32(samples);
let samples_f32: &[f32] = &converter.f64_to_f32(&samples);
self.write_bytes(samples_f32.as_bytes())
}
AudioFormat::S32 => {
let samples_s32: &[i32] = &converter.f64_to_s32(samples);
let samples_s32: &[i32] = &converter.f64_to_s32(&samples);
self.write_bytes(samples_s32.as_bytes())
}
AudioFormat::S24 => {
let samples_s24: &[i32] = &converter.f64_to_s24(samples);
let samples_s24: &[i32] = &converter.f64_to_s24(&samples);
self.write_bytes(samples_s24.as_bytes())
}
AudioFormat::S24_3 => {
let samples_s24_3: &[i24] = &converter.f64_to_s24_3(samples);
let samples_s24_3: &[i24] = &converter.f64_to_s24_3(&samples);
self.write_bytes(samples_s24_3.as_bytes())
}
AudioFormat::S16 => {
let samples_s16: &[i16] = &converter.f64_to_s16(samples);
let samples_s16: &[i16] = &converter.f64_to_s16(&samples);
self.write_bytes(samples_s16.as_bytes())
}
},
AudioPacket::OggData(samples) => self.write_bytes(samples),
AudioPacket::OggData(samples) => self.write_bytes(&samples),
}
}
};

8
playback/src/audio_backend/portaudio.rs
View file

@ -140,7 +140,7 @@ impl<'a> Sink for PortAudioSink<'a> {
Ok(())
}
fn write(&mut self, packet: &AudioPacket, converter: &mut Converter) -> SinkResult<()> {
fn write(&mut self, packet: AudioPacket, converter: &mut Converter) -> SinkResult<()> {
macro_rules! write_sink {
(ref mut $stream: expr, $samples: expr) => {
$stream.as_mut().unwrap().write($samples)
@ -153,15 +153,15 @@ impl<'a> Sink for PortAudioSink<'a> {
let result = match self {
Self::F32(stream, _parameters) => {
let samples_f32: &[f32] = &converter.f64_to_f32(samples);
let samples_f32: &[f32] = &converter.f64_to_f32(&samples);
write_sink!(ref mut stream, samples_f32)
}
Self::S32(stream, _parameters) => {
let samples_s32: &[i32] = &converter.f64_to_s32(samples);
let samples_s32: &[i32] = &converter.f64_to_s32(&samples);
write_sink!(ref mut stream, samples_s32)
}
Self::S16(stream, _parameters) => {
let samples_s16: &[i16] = &converter.f64_to_s16(samples);
let samples_s16: &[i16] = &converter.f64_to_s16(&samples);
write_sink!(ref mut stream, samples_s16)
}
};

2
playback/src/audio_backend/rodio.rs
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@ -189,7 +189,7 @@ pub fn open(host: cpal::Host, device: Option<String>, format: AudioFormat) -> Ro
}
impl Sink for RodioSink {
fn write(&mut self, packet: &AudioPacket, converter: &mut Converter) -> SinkResult<()> {
fn write(&mut self, packet: AudioPacket, converter: &mut Converter) -> SinkResult<()> {
let samples = packet
.samples()
.map_err(|e| RodioError::Samples(e.to_string()))?;

2
playback/src/audio_backend/sdl.rs
View file

@ -82,7 +82,7 @@ impl Sink for SdlSink {
Ok(())
}
fn write(&mut self, packet: &AudioPacket, converter: &mut Converter) -> SinkResult<()> {
fn write(&mut self, packet: AudioPacket, converter: &mut Converter) -> SinkResult<()> {
macro_rules! drain_sink {
($queue: expr, $size: expr) => {{
// sleep and wait for sdl thread to drain the queue a bit

2
playback/src/player.rs
View file

@ -1384,7 +1384,7 @@ impl PlayerInternal {
}
}
if let Err(e) = self.sink.write(&packet, &mut self.converter) {
if let Err(e) = self.sink.write(packet, &mut self.converter) {
error!("{}", e);
exit(1);
}