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// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include <span>
#include <vector>
#include <oboe/Oboe.h>
#include "audio_core/common/common.h"
#include "audio_core/sink/oboe_sink.h"
#include "audio_core/sink/sink_stream.h"
#include "common/logging/log.h"
#include "common/scope_exit.h"
#include "core/core.h"
namespace AudioCore::Sink {
class OboeSinkStream final : public SinkStream,
public oboe::AudioStreamDataCallback,
public oboe::AudioStreamErrorCallback {
public:
explicit OboeSinkStream(Core::System& system_, StreamType type_, const std::string& name_,
u32 system_channels_)
: SinkStream(system_, type_) {
name = name_;
system_channels = system_channels_;
this->OpenStream();
}
~OboeSinkStream() override {
LOG_INFO(Audio_Sink, "Destroyed Oboe stream");
}
void Finalize() override {
this->Stop();
m_stream.reset();
}
void Start(bool resume = false) override {
if (!m_stream || !paused) {
return;
}
paused = false;
if (m_stream->start() != oboe::Result::OK) {
LOG_CRITICAL(Audio_Sink, "Error starting Oboe stream");
}
}
void Stop() override {
if (!m_stream || paused) {
return;
}
this->SignalPause();
if (m_stream->stop() != oboe::Result::OK) {
LOG_CRITICAL(Audio_Sink, "Error stopping Oboe stream");
}
}
public:
static s32 QueryChannelCount(oboe::Direction direction) {
std::shared_ptr<oboe::AudioStream> temp_stream;
oboe::AudioStreamBuilder builder;
const auto result = ConfigureBuilder(builder, direction)->openStream(temp_stream);
if (result == oboe::Result::OK) {
return temp_stream->getChannelCount() >= 6 ? 6 : 2;
}
LOG_ERROR(Audio_Sink, "Failed to open {} stream. Using default channel count 2",
direction == oboe::Direction::Output ? "output" : "input");
return 2;
}
protected:
oboe::DataCallbackResult onAudioReady(oboe::AudioStream*, void* audio_data,
s32 num_buffer_frames) override {
const size_t num_channels = this->GetDeviceChannels();
const size_t frame_size = num_channels;
const size_t num_frames = static_cast<size_t>(num_buffer_frames);
if (type == StreamType::In) {
std::span<const s16> input_buffer{reinterpret_cast<const s16*>(audio_data),
num_frames * frame_size};
this->ProcessAudioIn(input_buffer, num_frames);
} else {
std::span<s16> output_buffer{reinterpret_cast<s16*>(audio_data),
num_frames * frame_size};
this->ProcessAudioOutAndRender(output_buffer, num_frames);
}
return oboe::DataCallbackResult::Continue;
}
void onErrorAfterClose(oboe::AudioStream*, oboe::Result) override {
LOG_INFO(Audio_Sink, "Audio stream closed, reinitializing");
if (this->OpenStream()) {
m_stream->start();
}
}
private:
static oboe::AudioStreamBuilder* ConfigureBuilder(oboe::AudioStreamBuilder& builder,
oboe::Direction direction) {
// TODO: investigate callback delay issues when using AAudio
return builder.setPerformanceMode(oboe::PerformanceMode::LowLatency)
->setAudioApi(oboe::AudioApi::OpenSLES)
->setDirection(direction)
->setSampleRate(TargetSampleRate)
->setSampleRateConversionQuality(oboe::SampleRateConversionQuality::High)
->setFormat(oboe::AudioFormat::I16)
->setFormatConversionAllowed(true)
->setUsage(oboe::Usage::Game)
->setBufferCapacityInFrames(TargetSampleCount * 2);
}
bool OpenStream() {
const auto direction = [&]() {
switch (type) {
case StreamType::In:
return oboe::Direction::Input;
case StreamType::Out:
case StreamType::Render:
return oboe::Direction::Output;
default:
ASSERT(false);
return oboe::Direction::Output;
}
}();
const auto expected_channels = QueryChannelCount(direction);
const auto expected_mask = [&]() {
switch (expected_channels) {
case 1:
return oboe::ChannelMask::Mono;
case 2:
return oboe::ChannelMask::Stereo;
case 6:
return oboe::ChannelMask::CM5Point1;
default:
ASSERT(false);
return oboe::ChannelMask::Unspecified;
}
}();
oboe::AudioStreamBuilder builder;
const auto result = ConfigureBuilder(builder, direction)
->setChannelCount(expected_channels)
->setChannelMask(expected_mask)
->setChannelConversionAllowed(true)
->setDataCallback(this)
->setErrorCallback(this)
->openStream(m_stream);
ASSERT(result == oboe::Result::OK);
return result == oboe::Result::OK && this->SetStreamProperties();
}
bool SetStreamProperties() {
ASSERT(m_stream);
m_stream->setBufferSizeInFrames(TargetSampleCount * 2);
device_channels = m_stream->getChannelCount();
const auto sample_rate = m_stream->getSampleRate();
const auto buffer_capacity = m_stream->getBufferCapacityInFrames();
const auto stream_backend =
m_stream->getAudioApi() == oboe::AudioApi::AAudio ? "AAudio" : "OpenSLES";
LOG_INFO(Audio_Sink, "Opened Oboe {} stream with {} channels sample rate {} capacity {}",
stream_backend, device_channels, sample_rate, buffer_capacity);
return true;
}
std::shared_ptr<oboe::AudioStream> m_stream{};
};
OboeSink::OboeSink() {
// TODO: This is not generally knowable
// The channel count is distinct based on direction and can change
device_channels = OboeSinkStream::QueryChannelCount(oboe::Direction::Output);
}
OboeSink::~OboeSink() = default;
SinkStream* OboeSink::AcquireSinkStream(Core::System& system, u32 system_channels,
const std::string& name, StreamType type) {
SinkStreamPtr& stream = sink_streams.emplace_back(
std::make_unique<OboeSinkStream>(system, type, name, system_channels));
return stream.get();
}
void OboeSink::CloseStream(SinkStream* to_remove) {
sink_streams.remove_if([&](auto& stream) { return stream.get() == to_remove; });
}
void OboeSink::CloseStreams() {
sink_streams.clear();
}
f32 OboeSink::GetDeviceVolume() const {
if (sink_streams.empty()) {
return 1.0f;
}
return sink_streams.front()->GetDeviceVolume();
}
void OboeSink::SetDeviceVolume(f32 volume) {
for (auto& stream : sink_streams) {
stream->SetDeviceVolume(volume);
}
}
void OboeSink::SetSystemVolume(f32 volume) {
for (auto& stream : sink_streams) {
stream->SetSystemVolume(volume);
}
}
} // namespace AudioCore::Sink
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