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audio_core: No longer stall when sink queue is full

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Now the audout and audren update rates are tied to the sink status stalling is no longer necessary.
This commit is contained in:
Billy Laws 2023-03-26 20:21:04 +01:00
parent 237934b736
commit 530fe24768
4 changed files with 1 additions and 64 deletions
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4
src/audio_core/sink/cubeb_sink.cpp
View file

@ -101,8 +101,6 @@ public:
~CubebSinkStream() override {
LOG_DEBUG(Service_Audio, "Destructing cubeb stream {}", name);
Unstall();
if (!ctx) {
return;
}
@ -143,8 +141,6 @@ public:
* Stop the sink stream.
*/
void Stop() override {
Unstall();
if (!ctx || paused) {
return;
}

2
src/audio_core/sink/sdl2_sink.cpp
View file

@ -88,7 +88,6 @@ public:
* Finalize the sink stream.
*/
void Finalize() override {
Unstall();
if (device == 0) {
return;
}
@ -116,7 +115,6 @@ public:
* Stop the sink stream.
*/
void Stop() override {
Unstall();
if (device == 0 || paused) {
return;
}

43
src/audio_core/sink/sink_stream.cpp
View file

@ -151,10 +151,6 @@ void SinkStream::ProcessAudioIn(std::span<const s16> input_buffer, std::size_t n
return;
}
if (queued_buffers > max_queue_size) {
Stall();
}
while (frames_written < num_frames) {
// If the playing buffer has been consumed or has no frames, we need a new one
if (playing_buffer.consumed || playing_buffer.frames == 0) {
@ -189,10 +185,6 @@ void SinkStream::ProcessAudioIn(std::span<const s16> input_buffer, std::size_t n
}
std::memcpy(&last_frame[0], &input_buffer[(frames_written - 1) * frame_size], frame_size_bytes);
if (queued_buffers <= max_queue_size) {
Unstall();
}
}
void SinkStream::ProcessAudioOutAndRender(std::span<s16> output_buffer, std::size_t num_frames) {
@ -216,20 +208,6 @@ void SinkStream::ProcessAudioOutAndRender(std::span<s16> output_buffer, std::siz
return;
}
// Due to many frames being queued up with nvdec (5 frames or so?), a lot of buffers also get
// queued up (30+) but not all at once, which causes constant stalling here, so just let the
// video play out without attempting to stall.
// Can hopefully remove this later with a more complete NVDEC implementation.
const auto nvdec_active{system.AudioCore().IsNVDECActive()};
// Core timing cannot be paused in single-core mode, so Stall ends up being called over and over
// and never recovers to a normal state, so just skip attempting to sync things on single-core.
if (system.IsMulticore() && !nvdec_active && queued_buffers > max_queue_size) {
Stall();
} else if (system.IsMulticore() && queued_buffers <= max_queue_size) {
Unstall();
}
while (frames_written < num_frames) {
// If the playing buffer has been consumed or has no frames, we need a new one
if (playing_buffer.consumed || playing_buffer.frames == 0) {
@ -279,27 +257,6 @@ void SinkStream::ProcessAudioOutAndRender(std::span<s16> output_buffer, std::siz
min_played_sample_count = max_played_sample_count;
max_played_sample_count += actual_frames_written;
}
if (system.IsMulticore() && queued_buffers <= max_queue_size) {
Unstall();
}
}
void SinkStream::Stall() {
std::scoped_lock lk{stall_guard};
if (stalled_lock) {
return;
}
stalled_lock = system.StallApplication();
}
void SinkStream::Unstall() {
std::scoped_lock lk{stall_guard};
if (!stalled_lock) {
return;
}
system.UnstallApplication();
stalled_lock.unlock();
}
u64 SinkStream::GetExpectedPlayedSampleCount() {

16
src/audio_core/sink/sink_stream.h
View file

@ -55,9 +55,7 @@ struct SinkBuffer {
class SinkStream {
public:
explicit SinkStream(Core::System& system_, StreamType type_) : system{system_}, type{type_} {}
virtual ~SinkStream() {
Unstall();
}
virtual ~SinkStream() {}
/**
* Finalize the sink stream.
@ -202,16 +200,6 @@ public:
*/
void ProcessAudioOutAndRender(std::span<s16> output_buffer, std::size_t num_frames);
/**
* Stall core processes if the audio thread falls too far behind.
*/
void Stall();
/**
* Unstall core processes.
*/
void Unstall();
/**
* Get the total number of samples expected to have been played by this stream.
*
@ -266,8 +254,6 @@ private:
/// Signalled when ring buffer entries are consumed
std::condition_variable release_cv;
std::mutex release_mutex;
std::mutex stall_guard;
std::unique_lock<std::mutex> stalled_lock;
};
using SinkStreamPtr = std::unique_ptr<SinkStream>;