From ea5dd02db9bdb9759a400907672ec6606bebb96b Mon Sep 17 00:00:00 2001 From: Billy Laws Date: Sat, 18 Mar 2023 20:57:00 +0000 Subject: audio: Wait for samples on the emulated DSP side to avoid desyncs Waiting on the host side is inaccurate and leads to desyncs in the event of the sink missing a deadline that require stalls to fix. By waiting for the sink to have space before even starting rendering such desyncs can be avoided. --- src/audio_core/sink/sink_stream.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'src/audio_core/sink/sink_stream.h') diff --git a/src/audio_core/sink/sink_stream.h b/src/audio_core/sink/sink_stream.h index 2340c936c..709f3b0ec 100644 --- a/src/audio_core/sink/sink_stream.h +++ b/src/audio_core/sink/sink_stream.h @@ -16,6 +16,7 @@ #include "common/reader_writer_queue.h" #include "common/ring_buffer.h" #include "common/thread.h" +#include "common/polyfill_thread.h" namespace Core { class System; @@ -219,6 +220,11 @@ public: */ u64 GetExpectedPlayedSampleCount(); + /** + * Waits for free space in the sample ring buffer + */ + void WaitFreeSpace(); + protected: /// Core system Core::System& system; @@ -258,6 +264,9 @@ private: f32 system_volume{1.0f}; /// Set via IAudioDevice service calls f32 device_volume{1.0f}; + /// Signalled when ring buffer entries are consumed + std::condition_variable release_cv; + std::mutex release_mutex; std::mutex stall_guard; std::unique_lock stalled_lock; }; -- cgit v1.2.3