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.

2 files changed, 3 insertions, 0 deletions

diff --git a/src/audio_core/renderer/adsp/audio_renderer.cpp b/src/audio_core/renderer/adsp/audio_renderer.cpp
index 42b4b167a..503f40349 100644
--- a/src/audio_core/renderer/adsp/audio_renderer.cpp
+++ b/src/audio_core/renderer/adsp/audio_renderer.cpp
@@ -189,6 +189,8 @@ void AudioRenderer::ThreadFunc() {
                     max_time = std::min(command_buffer.time_limit, max_time);
                     command_list_processor.SetProcessTimeMax(max_time);
 
+                    streams[index]->WaitFreeSpace();
+
                     // Process the command list
                     {
                         MICROPROFILE_SCOPE(Audio_Renderer);
diff --git a/src/audio_core/renderer/adsp/audio_renderer.h b/src/audio_core/renderer/adsp/audio_renderer.h
index 151f38c1b..f97f9401e 100644
--- a/src/audio_core/renderer/adsp/audio_renderer.h
+++ b/src/audio_core/renderer/adsp/audio_renderer.h
@@ -12,6 +12,7 @@
 #include "common/common_types.h"
 #include "common/reader_writer_queue.h"
 #include "common/thread.h"
+#include "common/polyfill_thread.h"
 
 namespace Core {
 namespace Timing {