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Merge pull request #842 from bunnei/audio-core

Initial implementation of Audio Core
This commit is contained in:
bunnei 2018-07-27 20:25:32 -07:00 committed by GitHub
commit e1d66ea794
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12 changed files with 460 additions and 95 deletions

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@ -3,6 +3,7 @@ include_directories(.)
add_subdirectory(common)
add_subdirectory(core)
add_subdirectory(audio_core)
add_subdirectory(video_core)
add_subdirectory(input_common)
add_subdirectory(tests)

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@ -0,0 +1,11 @@
add_library(audio_core STATIC
audio_out.cpp
audio_out.h
buffer.h
stream.cpp
stream.h
)
create_target_directory_groups(audio_core)
target_link_libraries(audio_core PUBLIC common core)

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@ -0,0 +1,50 @@
// Copyright 2018 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "audio_core/audio_out.h"
#include "common/assert.h"
#include "common/logging/log.h"
namespace AudioCore {
/// Returns the stream format from the specified number of channels
static Stream::Format ChannelsToStreamFormat(int num_channels) {
switch (num_channels) {
case 1:
return Stream::Format::Mono16;
case 2:
return Stream::Format::Stereo16;
case 6:
return Stream::Format::Multi51Channel16;
}
LOG_CRITICAL(Audio, "Unimplemented num_channels={}", num_channels);
UNREACHABLE();
return {};
}
StreamPtr AudioOut::OpenStream(int sample_rate, int num_channels,
Stream::ReleaseCallback&& release_callback) {
streams.push_back(std::make_shared<Stream>(sample_rate, ChannelsToStreamFormat(num_channels),
std::move(release_callback)));
return streams.back();
}
std::vector<u64> AudioOut::GetTagsAndReleaseBuffers(StreamPtr stream, size_t max_count) {
return stream->GetTagsAndReleaseBuffers(max_count);
}
void AudioOut::StartStream(StreamPtr stream) {
stream->Play();
}
void AudioOut::StopStream(StreamPtr stream) {
stream->Stop();
}
bool AudioOut::QueueBuffer(StreamPtr stream, Buffer::Tag tag, std::vector<u8>&& data) {
return stream->QueueBuffer(std::make_shared<Buffer>(tag, std::move(data)));
}
} // namespace AudioCore

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@ -0,0 +1,44 @@
// Copyright 2018 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <memory>
#include <vector>
#include "audio_core/buffer.h"
#include "audio_core/stream.h"
#include "common/common_types.h"
namespace AudioCore {
using StreamPtr = std::shared_ptr<Stream>;
/**
* Represents an audio playback interface, used to open and play audio streams
*/
class AudioOut {
public:
/// Opens a new audio stream
StreamPtr OpenStream(int sample_rate, int num_channels,
Stream::ReleaseCallback&& release_callback);
/// Returns a vector of recently released buffers specified by tag for the specified stream
std::vector<u64> GetTagsAndReleaseBuffers(StreamPtr stream, size_t max_count);
/// Starts an audio stream for playback
void StartStream(StreamPtr stream);
/// Stops an audio stream that is currently playing
void StopStream(StreamPtr stream);
/// Queues a buffer into the specified audio stream, returns true on success
bool QueueBuffer(StreamPtr stream, Buffer::Tag tag, std::vector<u8>&& data);
private:
/// Active audio streams on the interface
std::vector<StreamPtr> streams;
};
} // namespace AudioCore

37
src/audio_core/buffer.h Normal file
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@ -0,0 +1,37 @@
// Copyright 2018 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <vector>
#include "common/common_types.h"
namespace AudioCore {
/**
* Represents a buffer of audio samples to be played in an audio stream
*/
class Buffer {
public:
using Tag = u64;
Buffer(Tag tag, std::vector<u8>&& data) : tag{tag}, data{std::move(data)} {}
/// Returns the raw audio data for the buffer
const std::vector<u8>& GetData() const {
return data;
}
/// Returns the buffer tag, this is provided by the game to the audout service
Tag GetTag() const {
return tag;
}
private:
Tag tag;
std::vector<u8> data;
};
} // namespace AudioCore

103
src/audio_core/stream.cpp Normal file
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@ -0,0 +1,103 @@
// Copyright 2018 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "common/assert.h"
#include "common/logging/log.h"
#include "core/core_timing.h"
#include "core/core_timing_util.h"
#include "audio_core/stream.h"
namespace AudioCore {
constexpr size_t MaxAudioBufferCount{32};
/// Returns the sample size for the specified audio stream format
static size_t SampleSizeFromFormat(Stream::Format format) {
switch (format) {
case Stream::Format::Mono16:
return 2;
case Stream::Format::Stereo16:
return 4;
case Stream::Format::Multi51Channel16:
return 12;
};
LOG_CRITICAL(Audio, "Unimplemented format={}", static_cast<u32>(format));
UNREACHABLE();
return {};
}
Stream::Stream(int sample_rate, Format format, ReleaseCallback&& release_callback)
: sample_rate{sample_rate}, format{format}, release_callback{std::move(release_callback)} {
release_event = CoreTiming::RegisterEvent(
"Stream::Release", [this](u64 userdata, int cycles_late) { ReleaseActiveBuffer(); });
}
void Stream::Play() {
state = State::Playing;
PlayNextBuffer();
}
void Stream::Stop() {
ASSERT_MSG(false, "Unimplemented");
}
s64 Stream::GetBufferReleaseCycles(const Buffer& buffer) const {
const size_t num_samples{buffer.GetData().size() / SampleSizeFromFormat(format)};
return CoreTiming::usToCycles((static_cast<u64>(num_samples) * 1000000) / sample_rate);
}
void Stream::PlayNextBuffer() {
if (!IsPlaying()) {
// Ensure we are in playing state before playing the next buffer
return;
}
if (active_buffer) {
// Do not queue a new buffer if we are already playing a buffer
return;
}
if (queued_buffers.empty()) {
// No queued buffers - we are effectively paused
return;
}
active_buffer = queued_buffers.front();
queued_buffers.pop();
CoreTiming::ScheduleEventThreadsafe(GetBufferReleaseCycles(*active_buffer), release_event, {});
}
void Stream::ReleaseActiveBuffer() {
released_buffers.push(std::move(active_buffer));
release_callback();
PlayNextBuffer();
}
bool Stream::QueueBuffer(BufferPtr&& buffer) {
if (queued_buffers.size() < MaxAudioBufferCount) {
queued_buffers.push(std::move(buffer));
PlayNextBuffer();
return true;
}
return false;
}
bool Stream::ContainsBuffer(Buffer::Tag tag) const {
ASSERT_MSG(false, "Unimplemented");
return {};
}
std::vector<Buffer::Tag> Stream::GetTagsAndReleaseBuffers(size_t max_count) {
std::vector<Buffer::Tag> tags;
for (size_t count = 0; count < max_count && !released_buffers.empty(); ++count) {
tags.push_back(released_buffers.front()->GetTag());
released_buffers.pop();
}
return tags;
}
} // namespace AudioCore

89
src/audio_core/stream.h Normal file
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@ -0,0 +1,89 @@
// Copyright 2018 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <functional>
#include <memory>
#include <vector>
#include <queue>
#include "audio_core/buffer.h"
#include "common/assert.h"
#include "common/common_types.h"
#include "core/core_timing.h"
namespace AudioCore {
using BufferPtr = std::shared_ptr<Buffer>;
/**
* Represents an audio stream, which is a sequence of queued buffers, to be outputed by AudioOut
*/
class Stream {
public:
/// Audio format of the stream
enum class Format {
Mono16,
Stereo16,
Multi51Channel16,
};
/// Callback function type, used to change guest state on a buffer being released
using ReleaseCallback = std::function<void()>;
Stream(int sample_rate, Format format, ReleaseCallback&& release_callback);
/// Plays the audio stream
void Play();
/// Stops the audio stream
void Stop();
/// Queues a buffer into the audio stream, returns true on success
bool QueueBuffer(BufferPtr&& buffer);
/// Returns true if the audio stream contains a buffer with the specified tag
bool ContainsBuffer(Buffer::Tag tag) const;
/// Returns a vector of recently released buffers specified by tag
std::vector<Buffer::Tag> GetTagsAndReleaseBuffers(size_t max_count);
/// Returns true if the stream is currently playing
bool IsPlaying() const {
return state == State::Playing;
}
/// Returns the number of queued buffers
size_t GetQueueSize() const {
return queued_buffers.size();
}
private:
/// Current state of the stream
enum class State {
Stopped,
Playing,
};
/// Plays the next queued buffer in the audio stream, starting playback if necessary
void PlayNextBuffer();
/// Releases the actively playing buffer, signalling that it has been completed
void ReleaseActiveBuffer();
/// Gets the number of core cycles when the specified buffer will be released
s64 GetBufferReleaseCycles(const Buffer& buffer) const;
int sample_rate; ///< Sample rate of the stream
Format format; ///< Format of the stream
ReleaseCallback release_callback; ///< Buffer release callback for the stream
State state{State::Stopped}; ///< Playback state of the stream
CoreTiming::EventType* release_event{}; ///< Core timing release event for the stream
BufferPtr active_buffer; ///< Actively playing buffer in the stream
std::queue<BufferPtr> queued_buffers; ///< Buffers queued to be played in the stream
std::queue<BufferPtr> released_buffers; ///< Buffers recently released from the stream
};
} // namespace AudioCore

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@ -309,7 +309,7 @@ add_library(core STATIC
create_target_directory_groups(core)
target_link_libraries(core PUBLIC common PRIVATE video_core)
target_link_libraries(core PUBLIC common PRIVATE audio_core video_core)
target_link_libraries(core PUBLIC Boost::boost PRIVATE fmt lz4_static unicorn)
if (ARCHITECTURE_x86_64)

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@ -177,6 +177,7 @@ System::ResultStatus System::Init(EmuWindow* emu_window, u32 system_mode) {
}
gpu_core = std::make_unique<Tegra::GPU>();
audio_core = std::make_unique<AudioCore::AudioOut>();
telemetry_session = std::make_unique<Core::TelemetrySession>();
service_manager = std::make_shared<Service::SM::ServiceManager>();
@ -228,6 +229,7 @@ void System::Shutdown() {
service_manager.reset();
telemetry_session.reset();
gpu_core.reset();
audio_core.reset();
// Close all CPU/threading state
cpu_barrier->NotifyEnd();

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@ -8,6 +8,7 @@
#include <memory>
#include <string>
#include <thread>
#include "audio_core/audio_out.h"
#include "common/common_types.h"
#include "core/arm/exclusive_monitor.h"
#include "core/core_cpu.h"
@ -131,6 +132,11 @@ public:
return *gpu_core;
}
/// Gets the AudioCore interface
AudioCore::AudioOut& AudioCore() {
return *audio_core;
}
/// Gets the scheduler for the CPU core that is currently running
Kernel::Scheduler& CurrentScheduler() {
return *CurrentCpuCore().Scheduler();
@ -195,6 +201,7 @@ private:
/// AppLoader used to load the current executing application
std::unique_ptr<Loader::AppLoader> app_loader;
std::unique_ptr<Tegra::GPU> gpu_core;
std::unique_ptr<AudioCore::AudioOut> audio_core;
std::shared_ptr<Tegra::DebugContext> debug_context;
Kernel::SharedPtr<Kernel::Process> current_process;
std::shared_ptr<ExclusiveMonitor> cpu_exclusive_monitor;

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@ -5,8 +5,7 @@
#include <array>
#include <vector>
#include "common/logging/log.h"
#include "core/core_timing.h"
#include "core/core_timing_util.h"
#include "core/core.h"
#include "core/hle/ipc_helpers.h"
#include "core/hle/kernel/event.h"
#include "core/hle/kernel/hle_ipc.h"
@ -14,17 +13,22 @@
namespace Service::Audio {
/// Switch sample rate frequency
constexpr u32 sample_rate{48000};
/// TODO(st4rk): dynamic number of channels, as I think Switch has support
/// to more audio channels (probably when Docked I guess)
constexpr u32 audio_channels{2};
/// TODO(st4rk): find a proper value for the audio_ticks
constexpr u64 audio_ticks{static_cast<u64>(CoreTiming::BASE_CLOCK_RATE / 500)};
namespace ErrCodes {
enum {
ErrorUnknown = 2,
BufferCountExceeded = 8,
};
}
constexpr std::array<char, 10> DefaultDevice{{"DeviceOut"}};
constexpr int DefaultSampleRate{48000};
class IAudioOut final : public ServiceFramework<IAudioOut> {
public:
IAudioOut() : ServiceFramework("IAudioOut"), audio_out_state(AudioState::Stopped) {
IAudioOut(AudoutParams audio_params)
: ServiceFramework("IAudioOut"), audio_params(audio_params),
audio_core(Core::System::GetInstance().AudioCore()) {
static const FunctionInfo functions[] = {
{0, &IAudioOut::GetAudioOutState, "GetAudioOutState"},
{1, &IAudioOut::StartAudioOut, "StartAudioOut"},
@ -32,66 +36,65 @@ public:
{3, &IAudioOut::AppendAudioOutBufferImpl, "AppendAudioOutBuffer"},
{4, &IAudioOut::RegisterBufferEvent, "RegisterBufferEvent"},
{5, &IAudioOut::GetReleasedAudioOutBufferImpl, "GetReleasedAudioOutBuffer"},
{6, nullptr, "ContainsAudioOutBuffer"},
{6, &IAudioOut::ContainsAudioOutBuffer, "ContainsAudioOutBuffer"},
{7, &IAudioOut::AppendAudioOutBufferImpl, "AppendAudioOutBufferAuto"},
{8, &IAudioOut::GetReleasedAudioOutBufferImpl, "GetReleasedAudioOutBufferAuto"},
{9, nullptr, "GetAudioOutBufferCount"},
{9, &IAudioOut::GetAudioOutBufferCount, "GetAudioOutBufferCount"},
{10, nullptr, "GetAudioOutPlayedSampleCount"},
{11, nullptr, "FlushAudioOutBuffers"},
};
RegisterHandlers(functions);
// This is the event handle used to check if the audio buffer was released
buffer_event =
Kernel::Event::Create(Kernel::ResetType::OneShot, "IAudioOutBufferReleasedEvent");
buffer_event = Kernel::Event::Create(Kernel::ResetType::Sticky, "IAudioOutBufferReleased");
// Register event callback to update the Audio Buffer
audio_event = CoreTiming::RegisterEvent(
"IAudioOut::UpdateAudioBuffersCallback", [this](u64 userdata, int cycles_late) {
UpdateAudioBuffersCallback();
CoreTiming::ScheduleEvent(audio_ticks - cycles_late, audio_event);
});
// Start the audio event
CoreTiming::ScheduleEvent(audio_ticks, audio_event);
}
~IAudioOut() {
CoreTiming::UnscheduleEvent(audio_event, 0);
stream = audio_core.OpenStream(audio_params.sample_rate, audio_params.channel_count,
[=]() { buffer_event->Signal(); });
}
private:
struct AudioBuffer {
u64_le next;
u64_le buffer;
u64_le buffer_capacity;
u64_le buffer_size;
u64_le offset;
};
static_assert(sizeof(AudioBuffer) == 0x28, "AudioBuffer is an invalid size");
void GetAudioOutState(Kernel::HLERequestContext& ctx) {
LOG_DEBUG(Service_Audio, "called");
IPC::ResponseBuilder rb{ctx, 3};
rb.Push(RESULT_SUCCESS);
rb.Push(static_cast<u32>(audio_out_state));
rb.Push(static_cast<u32>(stream->IsPlaying() ? AudioState::Started : AudioState::Stopped));
}
void StartAudioOut(Kernel::HLERequestContext& ctx) {
LOG_WARNING(Service_Audio, "(STUBBED) called");
LOG_DEBUG(Service_Audio, "called");
// Start audio
audio_out_state = AudioState::Started;
if (stream->IsPlaying()) {
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(ResultCode(ErrorModule::Audio, ErrCodes::ErrorUnknown));
return;
}
audio_core.StartStream(stream);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(RESULT_SUCCESS);
}
void StopAudioOut(Kernel::HLERequestContext& ctx) {
LOG_WARNING(Service_Audio, "(STUBBED) called");
LOG_DEBUG(Service_Audio, "called");
// Stop audio
audio_out_state = AudioState::Stopped;
queue_keys.clear();
audio_core.StopStream(stream);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(RESULT_SUCCESS);
}
void RegisterBufferEvent(Kernel::HLERequestContext& ctx) {
LOG_WARNING(Service_Audio, "(STUBBED) called");
LOG_DEBUG(Service_Audio, "called");
IPC::ResponseBuilder rb{ctx, 2, 1};
rb.Push(RESULT_SUCCESS);
@ -99,101 +102,107 @@ private:
}
void AppendAudioOutBufferImpl(Kernel::HLERequestContext& ctx) {
LOG_WARNING(Service_Audio, "(STUBBED) called");
LOG_DEBUG(Service_Audio, "(STUBBED) called {}", ctx.Description());
IPC::RequestParser rp{ctx};
const u64 key{rp.Pop<u64>()};
queue_keys.insert(queue_keys.begin(), key);
const auto& input_buffer{ctx.ReadBuffer()};
ASSERT_MSG(input_buffer.size() == sizeof(AudioBuffer),
"AudioBuffer input is an invalid size!");
AudioBuffer audio_buffer{};
std::memcpy(&audio_buffer, input_buffer.data(), sizeof(AudioBuffer));
const u64 tag{rp.Pop<u64>()};
std::vector<u8> data(audio_buffer.buffer_size);
Memory::ReadBlock(audio_buffer.buffer, data.data(), data.size());
if (!audio_core.QueueBuffer(stream, tag, std::move(data))) {
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(ResultCode(ErrorModule::Audio, ErrCodes::BufferCountExceeded));
}
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(RESULT_SUCCESS);
}
void GetReleasedAudioOutBufferImpl(Kernel::HLERequestContext& ctx) {
LOG_WARNING(Service_Audio, "(STUBBED) called");
LOG_DEBUG(Service_Audio, "called {}", ctx.Description());
IPC::RequestParser rp{ctx};
const u64 max_count{ctx.GetWriteBufferSize() / sizeof(u64)};
const auto released_buffers{audio_core.GetTagsAndReleaseBuffers(stream, max_count)};
// TODO(st4rk): This is how libtransistor currently implements the
// GetReleasedAudioOutBuffer, it should return the key (a VAddr) to the app and this address
// is used to know which buffer should be filled with data and send again to the service
// through AppendAudioOutBuffer. Check if this is the proper way to do it.
u64 key{0};
if (queue_keys.size()) {
key = queue_keys.back();
queue_keys.pop_back();
}
ctx.WriteBuffer(&key, sizeof(u64));
std::vector<u64> tags{released_buffers};
tags.resize(max_count);
ctx.WriteBuffer(tags);
IPC::ResponseBuilder rb{ctx, 3};
rb.Push(RESULT_SUCCESS);
// TODO(st4rk): This might be the total of released buffers, needs to be verified on
// hardware
rb.Push<u32>(static_cast<u32>(queue_keys.size()));
rb.Push<u32>(static_cast<u32>(released_buffers.size()));
}
void UpdateAudioBuffersCallback() {
if (audio_out_state != AudioState::Started) {
return;
void ContainsAudioOutBuffer(Kernel::HLERequestContext& ctx) {
LOG_DEBUG(Service_Audio, "called");
IPC::RequestParser rp{ctx};
const u64 tag{rp.Pop<u64>()};
IPC::ResponseBuilder rb{ctx, 3};
rb.Push(RESULT_SUCCESS);
rb.Push(stream->ContainsBuffer(tag));
}
if (queue_keys.empty()) {
return;
void GetAudioOutBufferCount(Kernel::HLERequestContext& ctx) {
LOG_DEBUG(Service_Audio, "called");
IPC::ResponseBuilder rb{ctx, 3};
rb.Push(RESULT_SUCCESS);
rb.Push(static_cast<u32>(stream->GetQueueSize()));
}
buffer_event->Signal();
}
AudioCore::AudioOut& audio_core;
AudioCore::StreamPtr stream;
enum class AudioState : u32 {
Started,
Stopped,
};
/// This is used to trigger the audio event callback that is going to read the samples from the
/// audio_buffer list and enqueue the samples using the sink (audio_core).
CoreTiming::EventType* audio_event;
AudoutParams audio_params{};
/// This is the evend handle used to check if the audio buffer was released
Kernel::SharedPtr<Kernel::Event> buffer_event;
/// (st4rk): This is just a temporary workaround for the future implementation. Libtransistor
/// uses the key as an address in the App, so we need to return when the
/// GetReleasedAudioOutBuffer_1 is called, otherwise we'll run in problems, because
/// libtransistor uses the key returned as an pointer.
std::vector<u64> queue_keys;
AudioState audio_out_state;
};
void AudOutU::ListAudioOutsImpl(Kernel::HLERequestContext& ctx) {
LOG_WARNING(Service_Audio, "(STUBBED) called");
LOG_DEBUG(Service_Audio, "called");
IPC::RequestParser rp{ctx};
constexpr std::array<char, 15> audio_interface{{"AudioInterface"}};
ctx.WriteBuffer(audio_interface);
ctx.WriteBuffer(DefaultDevice);
IPC::ResponseBuilder rb = rp.MakeBuilder(3, 0, 0);
rb.Push(RESULT_SUCCESS);
// TODO(st4rk): We're currently returning only one audio interface (stringlist size). However,
// it's highly possible to have more than one interface (despite that libtransistor requires
// only one).
rb.Push<u32>(1);
rb.Push<u32>(1); // Amount of audio devices
}
void AudOutU::OpenAudioOutImpl(Kernel::HLERequestContext& ctx) {
LOG_WARNING(Service_Audio, "(STUBBED) called");
LOG_DEBUG(Service_Audio, "called");
if (!audio_out_interface) {
audio_out_interface = std::make_shared<IAudioOut>();
ctx.WriteBuffer(DefaultDevice);
IPC::RequestParser rp{ctx};
auto params{rp.PopRaw<AudoutParams>()};
if (params.channel_count <= 2) {
// Mono does not exist for audout
params.channel_count = 2;
} else {
params.channel_count = 6;
}
if (!params.sample_rate) {
params.sample_rate = DefaultSampleRate;
}
// TODO(bunnei): Support more than one IAudioOut interface. When we add this, ListAudioOutsImpl
// will likely need to be updated as well.
ASSERT_MSG(!audio_out_interface, "Unimplemented");
audio_out_interface = std::make_shared<IAudioOut>(std::move(params));
IPC::ResponseBuilder rb{ctx, 6, 0, 1};
rb.Push(RESULT_SUCCESS);
rb.Push<u32>(sample_rate);
rb.Push<u32>(audio_channels);
rb.Push<u32>(DefaultSampleRate);
rb.Push<u32>(params.channel_count);
rb.Push<u32>(static_cast<u32>(PcmFormat::Int16));
rb.Push<u32>(0); // This field is unknown
rb.Push<u32>(static_cast<u32>(AudioState::Stopped));
rb.PushIpcInterface<Audio::IAudioOut>(audio_out_interface);
}

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@ -12,6 +12,18 @@ class HLERequestContext;
namespace Service::Audio {
struct AudoutParams {
s32_le sample_rate;
u16_le channel_count;
INSERT_PADDING_BYTES(2);
};
static_assert(sizeof(AudoutParams) == 0x8, "AudoutParams is an invalid size");
enum class AudioState : u32 {
Started,
Stopped,
};
class IAudioOut;
class AudOutU final : public ServiceFramework<AudOutU> {