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Decouple audio processing and run at variable rate 

Currently, processing of audio samples is called from AudioRenderer's Update method, using a fixed 4 buffers to process the given samples. Games call Update at variable rates, depending on framerate and/or sample count, which causes inconsistency in audio processing. From what I've seen, 60 FPS games update every ~0.004s, but 30 FPS/160 sample games update somewhere between 0.02 and 0.04, 5-10x slower. Not enough samples get fed to the backend, leading to a lot of audio skipping.

This PR seeks to address this by de-coupling the audio consumption and the audio update. Update remains the same without calling for buffer queuing, and the consume now schedules itself to run based on the sample rate and count.
This commit is contained in:
Kelebek1 2021-06-20 15:23:16 +01:00
parent 432fab7c4f
commit 0857d6a3db
3 changed files with 124 additions and 88 deletions
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196
src/audio_core/audio_renderer.cpp
View File

@ -12,6 +12,7 @@
#include "audio_core/voice_context.h"
#include "common/logging/log.h"
#include "common/settings.h"
#include "core/core_timing.h"
#include "core/memory.h"
namespace {
@ -68,7 +69,9 @@ namespace {
} // namespace
namespace AudioCore {
AudioRenderer::AudioRenderer(Core::Timing::CoreTiming& core_timing, Core::Memory::Memory& memory_,
constexpr s32 NUM_BUFFERS = 2;
AudioRenderer::AudioRenderer(Core::Timing::CoreTiming& core_timing_, Core::Memory::Memory& memory_,
AudioCommon::AudioRendererParameter params,
Stream::ReleaseCallback&& release_callback,
std::size_t instance_number)
@ -77,7 +80,8 @@ AudioRenderer::AudioRenderer(Core::Timing::CoreTiming& core_timing, Core::Memory
sink_context(params.sink_count), splitter_context(),
voices(params.voice_count), memory{memory_},
command_generator(worker_params, voice_context, mix_context, splitter_context, effect_context,
memory) {
memory),
core_timing{core_timing_} {
behavior_info.SetUserRevision(params.revision);
splitter_context.Initialize(behavior_info, params.splitter_count,
params.num_splitter_send_channels);
@ -86,16 +90,27 @@ AudioRenderer::AudioRenderer(Core::Timing::CoreTiming& core_timing, Core::Memory
stream = audio_out->OpenStream(
core_timing, params.sample_rate, AudioCommon::STREAM_NUM_CHANNELS,
fmt::format("AudioRenderer-Instance{}", instance_number), std::move(release_callback));
audio_out->StartStream(stream);
QueueMixedBuffer(0);
QueueMixedBuffer(1);
QueueMixedBuffer(2);
QueueMixedBuffer(3);
process_event = Core::Timing::CreateEvent(
fmt::format("AudioRenderer-Instance{}-Process", instance_number),
[this](std::uintptr_t, std::chrono::nanoseconds) { ReleaseAndQueueBuffers(); });
for (s32 i = 0; i < NUM_BUFFERS; ++i) {
QueueMixedBuffer(i);
}
}
AudioRenderer::~AudioRenderer() = default;
ResultCode AudioRenderer::Start() {
audio_out->StartStream(stream);
ReleaseAndQueueBuffers();
return ResultSuccess;
}
ResultCode AudioRenderer::Stop() {
audio_out->StopStream(stream);
return ResultSuccess;
}
u32 AudioRenderer::GetSampleRate() const {
return worker_params.sample_rate;
}
@ -114,89 +129,88 @@ Stream::State AudioRenderer::GetStreamState() const {
ResultCode AudioRenderer::UpdateAudioRenderer(const std::vector<u8>& input_params,
std::vector<u8>& output_params) {
{
std::scoped_lock lock{mutex};
InfoUpdater info_updater{input_params, output_params, behavior_info};
InfoUpdater info_updater{input_params, output_params, behavior_info};
if (!info_updater.UpdateBehaviorInfo(behavior_info)) {
LOG_ERROR(Audio, "Failed to update behavior info input parameters");
return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
}
if (!info_updater.UpdateBehaviorInfo(behavior_info)) {
LOG_ERROR(Audio, "Failed to update behavior info input parameters");
return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
}
if (!info_updater.UpdateMemoryPools(memory_pool_info)) {
LOG_ERROR(Audio, "Failed to update memory pool parameters");
return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
}
if (!info_updater.UpdateMemoryPools(memory_pool_info)) {
LOG_ERROR(Audio, "Failed to update memory pool parameters");
return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
}
if (!info_updater.UpdateVoiceChannelResources(voice_context)) {
LOG_ERROR(Audio, "Failed to update voice channel resource parameters");
return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
}
if (!info_updater.UpdateVoiceChannelResources(voice_context)) {
LOG_ERROR(Audio, "Failed to update voice channel resource parameters");
return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
}
if (!info_updater.UpdateVoices(voice_context, memory_pool_info, 0)) {
LOG_ERROR(Audio, "Failed to update voice parameters");
return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
}
if (!info_updater.UpdateVoices(voice_context, memory_pool_info, 0)) {
LOG_ERROR(Audio, "Failed to update voice parameters");
return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
}
// TODO(ogniK): Deal with stopped audio renderer but updates still taking place
if (!info_updater.UpdateEffects(effect_context, true)) {
LOG_ERROR(Audio, "Failed to update effect parameters");
return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
}
// TODO(ogniK): Deal with stopped audio renderer but updates still taking place
if (!info_updater.UpdateEffects(effect_context, true)) {
LOG_ERROR(Audio, "Failed to update effect parameters");
return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
}
if (behavior_info.IsSplitterSupported()) {
if (!info_updater.UpdateSplitterInfo(splitter_context)) {
LOG_ERROR(Audio, "Failed to update splitter parameters");
return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
}
}
if (behavior_info.IsSplitterSupported()) {
if (!info_updater.UpdateSplitterInfo(splitter_context)) {
LOG_ERROR(Audio, "Failed to update splitter parameters");
const auto mix_result = info_updater.UpdateMixes(
mix_context, worker_params.mix_buffer_count, splitter_context, effect_context);
if (mix_result.IsError()) {
LOG_ERROR(Audio, "Failed to update mix parameters");
return mix_result;
}
// TODO(ogniK): Sinks
if (!info_updater.UpdateSinks(sink_context)) {
LOG_ERROR(Audio, "Failed to update sink parameters");
return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
}
// TODO(ogniK): Performance buffer
if (!info_updater.UpdatePerformanceBuffer()) {
LOG_ERROR(Audio, "Failed to update performance buffer parameters");
return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
}
if (!info_updater.UpdateErrorInfo(behavior_info)) {
LOG_ERROR(Audio, "Failed to update error info");
return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
}
if (behavior_info.IsElapsedFrameCountSupported()) {
if (!info_updater.UpdateRendererInfo(elapsed_frame_count)) {
LOG_ERROR(Audio, "Failed to update renderer info");
return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
}
}
// TODO(ogniK): Statistics
if (!info_updater.WriteOutputHeader()) {
LOG_ERROR(Audio, "Failed to write output header");
return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
}
// TODO(ogniK): Check when all sections are implemented
if (!info_updater.CheckConsumedSize()) {
LOG_ERROR(Audio, "Audio buffers were not consumed!");
return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
}
}
const auto mix_result = info_updater.UpdateMixes(mix_context, worker_params.mix_buffer_count,
splitter_context, effect_context);
if (mix_result.IsError()) {
LOG_ERROR(Audio, "Failed to update mix parameters");
return mix_result;
}
// TODO(ogniK): Sinks
if (!info_updater.UpdateSinks(sink_context)) {
LOG_ERROR(Audio, "Failed to update sink parameters");
return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
}
// TODO(ogniK): Performance buffer
if (!info_updater.UpdatePerformanceBuffer()) {
LOG_ERROR(Audio, "Failed to update performance buffer parameters");
return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
}
if (!info_updater.UpdateErrorInfo(behavior_info)) {
LOG_ERROR(Audio, "Failed to update error info");
return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
}
if (behavior_info.IsElapsedFrameCountSupported()) {
if (!info_updater.UpdateRendererInfo(elapsed_frame_count)) {
LOG_ERROR(Audio, "Failed to update renderer info");
return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
}
}
// TODO(ogniK): Statistics
if (!info_updater.WriteOutputHeader()) {
LOG_ERROR(Audio, "Failed to write output header");
return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
}
// TODO(ogniK): Check when all sections are implemented
if (!info_updater.CheckConsumedSize()) {
LOG_ERROR(Audio, "Audio buffers were not consumed!");
return AudioCommon::Audren::ERR_INVALID_PARAMETERS;
}
ReleaseAndQueueBuffers();
return ResultSuccess;
}
@ -315,10 +329,24 @@ void AudioRenderer::QueueMixedBuffer(Buffer::Tag tag) {
}
void AudioRenderer::ReleaseAndQueueBuffers() {
const auto released_buffers{audio_out->GetTagsAndReleaseBuffers(stream)};
for (const auto& tag : released_buffers) {
QueueMixedBuffer(tag);
if (!stream->IsPlaying()) {
return;
}
{
std::scoped_lock lock{mutex};
const auto released_buffers{audio_out->GetTagsAndReleaseBuffers(stream)};
for (const auto& tag : released_buffers) {
QueueMixedBuffer(tag);
}
}
const f32 sample_rate = static_cast<f32>(GetSampleRate());
const f32 sample_count = static_cast<f32>(GetSampleCount());
const f32 consume_rate = sample_rate / (sample_count * (sample_count / 240));
const s32 ms = (1000 / static_cast<s32>(consume_rate)) - 1;
const std::chrono::milliseconds next_event_time(std::max(ms / NUM_BUFFERS, 1));
core_timing.ScheduleEvent(next_event_time, process_event, {});
}
} // namespace AudioCore

6
src/audio_core/audio_renderer.h
View File

@ -6,6 +6,7 @@
#include <array>
#include <memory>
#include <mutex>
#include <vector>
#include "audio_core/behavior_info.h"
@ -45,6 +46,8 @@ public:
[[nodiscard]] ResultCode UpdateAudioRenderer(const std::vector<u8>& input_params,
std::vector<u8>& output_params);
[[nodiscard]] ResultCode Start();
[[nodiscard]] ResultCode Stop();
void QueueMixedBuffer(Buffer::Tag tag);
void ReleaseAndQueueBuffers();
[[nodiscard]] u32 GetSampleRate() const;
@ -68,6 +71,9 @@ private:
Core::Memory::Memory& memory;
CommandGenerator command_generator;
std::size_t elapsed_frame_count{};
Core::Timing::CoreTiming& core_timing;
std::shared_ptr<Core::Timing::EventType> process_event;
std::mutex mutex;
};
} // namespace AudioCore

10
src/core/hle/service/audio/audren_u.cpp
View File

@ -110,17 +110,19 @@ private:
void Start(Kernel::HLERequestContext& ctx) {
LOG_WARNING(Service_Audio, "(STUBBED) called");
IPC::ResponseBuilder rb{ctx, 2};
const auto result = renderer->Start();
rb.Push(ResultSuccess);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(result);
}
void Stop(Kernel::HLERequestContext& ctx) {
LOG_WARNING(Service_Audio, "(STUBBED) called");
IPC::ResponseBuilder rb{ctx, 2};
const auto result = renderer->Stop();
rb.Push(ResultSuccess);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(result);
}
void QuerySystemEvent(Kernel::HLERequestContext& ctx) {