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-rw-r--r--src/audio_core/sink/sink_stream.cpp21
-rw-r--r--src/audio_core/sink/sink_stream.h17
2 files changed, 38 insertions, 0 deletions
diff --git a/src/audio_core/sink/sink_stream.cpp b/src/audio_core/sink/sink_stream.cpp
index 39a21b0f0..1af96f793 100644
--- a/src/audio_core/sink/sink_stream.cpp
+++ b/src/audio_core/sink/sink_stream.cpp
@@ -14,6 +14,8 @@
#include "common/fixed_point.h"
#include "common/settings.h"
#include "core/core.h"
+#include "core/core_timing.h"
+#include "core/core_timing_util.h"
namespace AudioCore::Sink {
@@ -198,6 +200,7 @@ void SinkStream::ProcessAudioOutAndRender(std::span<s16> output_buffer, std::siz
const std::size_t frame_size = num_channels;
const std::size_t frame_size_bytes = frame_size * sizeof(s16);
size_t frames_written{0};
+ size_t actual_frames_written{0};
// If we're paused or going to shut down, we don't want to consume buffers as coretiming is
// paused and we'll desync, so just play silence.
@@ -248,6 +251,7 @@ void SinkStream::ProcessAudioOutAndRender(std::span<s16> output_buffer, std::siz
frames_available * frame_size);
frames_written += frames_available;
+ actual_frames_written += frames_available;
playing_buffer.frames_played += frames_available;
// If that's all the frames in the current buffer, add its samples and mark it as
@@ -260,6 +264,13 @@ void SinkStream::ProcessAudioOutAndRender(std::span<s16> output_buffer, std::siz
std::memcpy(&last_frame[0], &output_buffer[(frames_written - 1) * frame_size],
frame_size_bytes);
+ {
+ std::scoped_lock lk{sample_count_lock};
+ last_sample_count_update_time = Core::Timing::CyclesToUs(system.CoreTiming().GetClockTicks());
+ min_played_sample_count = max_played_sample_count;
+ max_played_sample_count += actual_frames_written;
+ }
+
if (system.IsMulticore() && queued_buffers <= max_queue_size) {
Unstall();
}
@@ -282,4 +293,14 @@ void SinkStream::Unstall() {
stalled_lock.unlock();
}
+u64 SinkStream::GetExpectedPlayedSampleCount() {
+ std::scoped_lock lk{sample_count_lock};
+ auto cur_time{Core::Timing::CyclesToUs(system.CoreTiming().GetClockTicks())};
+ auto time_delta{cur_time - last_sample_count_update_time};
+ auto exp_played_sample_count{min_played_sample_count +
+ (TargetSampleRate * time_delta) / std::chrono::seconds{1}};
+
+ return std::min<u64>(exp_played_sample_count, max_played_sample_count);
+}
+
} // namespace AudioCore::Sink
diff --git a/src/audio_core/sink/sink_stream.h b/src/audio_core/sink/sink_stream.h
index 5fea72ab7..2340c936c 100644
--- a/src/audio_core/sink/sink_stream.h
+++ b/src/audio_core/sink/sink_stream.h
@@ -5,6 +5,7 @@
#include <array>
#include <atomic>
+#include <chrono>
#include <memory>
#include <mutex>
#include <span>
@@ -14,6 +15,7 @@
#include "common/common_types.h"
#include "common/reader_writer_queue.h"
#include "common/ring_buffer.h"
+#include "common/thread.h"
namespace Core {
class System;
@@ -210,6 +212,13 @@ public:
*/
void Unstall();
+ /**
+ * Get the total number of samples expected to have been played by this stream.
+ *
+ * @return The number of samples.
+ */
+ u64 GetExpectedPlayedSampleCount();
+
protected:
/// Core system
Core::System& system;
@@ -237,6 +246,14 @@ private:
std::atomic<u32> queued_buffers{};
/// The ring size for audio out buffers (usually 4, rarely 2 or 8)
u32 max_queue_size{};
+ /// Locks access to sample count tracking info
+ std::mutex sample_count_lock;
+ /// Minimum number of total samples that have been played since the last callback
+ u64 min_played_sample_count{};
+ /// Maximum number of total samples that can be played since the last callback
+ u64 max_played_sample_count{};
+ /// The time the two above tracking variables were last written to
+ std::chrono::microseconds last_sample_count_update_time{};
/// Set by the audio render/in/out system which uses this stream
f32 system_volume{1.0f};
/// Set via IAudioDevice service calls