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audio_core: Implement a cubeb audio sink
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@ -18,6 +18,8 @@ CMAKE_DEPENDENT_OPTION(CITRA_USE_BUNDLED_QT "Download bundled Qt binaries" ON "E
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option(ENABLE_WEB_SERVICE "Enable web services (telemetry, etc.)" ON)
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option(ENABLE_CUBEB "Enables the cubeb audio backend" ON)
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if(NOT EXISTS ${CMAKE_SOURCE_DIR}/.git/hooks/pre-commit)
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message(STATUS "Copying pre-commit hook")
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file(COPY hooks/pre-commit
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5
externals/CMakeLists.txt
vendored
5
externals/CMakeLists.txt
vendored
@ -77,3 +77,8 @@ if (ENABLE_WEB_SERVICE)
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add_library(json-headers INTERFACE)
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target_include_directories(json-headers INTERFACE ./json)
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endif()
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# Cubeb
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if(ENABLE_CUBEB)
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add_subdirectory(cubeb)
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endif()
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@ -24,6 +24,7 @@ add_library(audio_core STATIC
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time_stretch.h
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$<$<BOOL:${SDL2_FOUND}>:sdl2_sink.cpp sdl2_sink.h>
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$<$<BOOL:${ENABLE_CUBEB}>:cubeb_sink.cpp cubeb_sink.h>
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)
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create_target_directory_groups(audio_core)
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@ -35,3 +36,7 @@ if(SDL2_FOUND)
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target_link_libraries(audio_core PRIVATE SDL2)
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target_compile_definitions(audio_core PRIVATE HAVE_SDL2)
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endif()
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if(ENABLE_CUBEB)
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target_link_libraries(audio_core PRIVATE cubeb)
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endif()
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146
src/audio_core/cubeb_sink.cpp
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146
src/audio_core/cubeb_sink.cpp
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@ -0,0 +1,146 @@
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// Copyright 2018 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <vector>
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#include <cubeb/cubeb.h>
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#include "audio_core/audio_types.h"
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#include "audio_core/cubeb_sink.h"
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#include "common/logging/log.h"
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#include "core/settings.h"
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namespace AudioCore {
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struct CubebSink::Impl {
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unsigned int sample_rate = 0;
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cubeb* ctx = nullptr;
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cubeb_stream* stream = nullptr;
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std::vector<s16> queue;
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static long DataCallback(cubeb_stream* stream, void* user_data, const void* input_buffer,
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void* output_buffer, long num_frames);
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static void StateCallback(cubeb_stream* stream, void* user_data, cubeb_state state);
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};
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CubebSink::CubebSink() : impl(std::make_unique<Impl>()) {
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if (cubeb_init(&impl->ctx, "Citra", nullptr) != CUBEB_OK) {
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NGLOG_CRITICAL(Audio_Sink, "cubeb_init failed");
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return;
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}
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const char* target_device_name = nullptr;
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cubeb_devid output_device = nullptr;
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cubeb_stream_params params;
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params.rate = native_sample_rate;
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params.channels = 2;
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params.format = CUBEB_SAMPLE_S16NE;
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params.layout = CUBEB_LAYOUT_STEREO;
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impl->sample_rate = native_sample_rate;
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u32 minimum_latency = 0;
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if (cubeb_get_min_latency(impl->ctx, ¶ms, &minimum_latency) != CUBEB_OK)
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NGLOG_CRITICAL(Audio_Sink, "Error getting minimum latency");
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cubeb_device_collection collection;
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if (cubeb_enumerate_devices(impl->ctx, CUBEB_DEVICE_TYPE_OUTPUT, &collection) != CUBEB_OK) {
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NGLOG_WARNING(Audio_Sink, "Audio output device enumeration not supported");
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} else {
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if (collection.count >= 1 && Settings::values.audio_device_id != "auto" &&
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!Settings::values.audio_device_id.empty()) {
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target_device_name = Settings::values.audio_device_id.c_str();
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}
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for (size_t i = 0; i < collection.count; i++) {
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const cubeb_device_info& device = collection.device[i];
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device_list.emplace_back(device.friendly_name);
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if (target_device_name && strcmp(target_device_name, device.friendly_name) == 0) {
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output_device = device.devid;
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}
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}
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cubeb_device_collection_destroy(impl->ctx, &collection);
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}
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if (cubeb_stream_init(impl->ctx, &impl->stream, "Citra Audio Output", nullptr, nullptr,
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output_device, ¶ms, std::max(512u, minimum_latency),
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&Impl::DataCallback, &Impl::StateCallback, impl.get()) != CUBEB_OK) {
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NGLOG_CRITICAL(Audio_Sink, "Error initializing cubeb stream");
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return;
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}
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if (cubeb_stream_start(impl->stream) != CUBEB_OK) {
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NGLOG_CRITICAL(Audio_Sink, "Error starting cubeb stream");
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return;
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}
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}
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CubebSink::~CubebSink() {
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if (!impl->ctx)
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return;
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if (cubeb_stream_stop(impl->stream) != CUBEB_OK) {
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NGLOG_CRITICAL(Audio_Sink, "Error stopping cubeb stream");
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}
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cubeb_stream_destroy(impl->stream);
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cubeb_destroy(impl->ctx);
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}
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unsigned int CubebSink::GetNativeSampleRate() const {
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if (!impl->ctx)
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return native_sample_rate;
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return impl->sample_rate;
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}
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std::vector<std::string> CubebSink::GetDeviceList() const {
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return device_list;
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}
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void CubebSink::EnqueueSamples(const s16* samples, size_t sample_count) {
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if (!impl->ctx)
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return;
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impl->queue.reserve(impl->queue.size() + sample_count * 2);
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std::copy(samples, samples + sample_count * 2, std::back_inserter(impl->queue));
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}
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size_t CubebSink::SamplesInQueue() const {
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if (!impl->ctx)
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return 0;
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return impl->queue.size() / 2;
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}
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void CubebSink::SetDevice(int device_id) {}
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long CubebSink::Impl::DataCallback(cubeb_stream* stream, void* user_data, const void* input_buffer,
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void* output_buffer, long num_frames) {
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Impl* impl = static_cast<Impl*>(user_data);
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u8* buffer = reinterpret_cast<u8*>(output_buffer);
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if (!impl)
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return 0;
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size_t frames_to_write = std::min(impl->queue.size() / 2, static_cast<size_t>(num_frames));
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memcpy(buffer, impl->queue.data(), frames_to_write * sizeof(s16) * 2);
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impl->queue.erase(impl->queue.begin(), impl->queue.begin() + frames_to_write * 2);
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if (frames_to_write < num_frames) {
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// Fill the rest of the frames with silence
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memset(buffer + frames_to_write * sizeof(s16) * 2, 0,
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(num_frames - frames_to_write) * sizeof(s16) * 2);
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}
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return num_frames;
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}
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void CubebSink::Impl::StateCallback(cubeb_stream* stream, void* user_data, cubeb_state state) {}
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} // namespace AudioCore
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34
src/audio_core/cubeb_sink.h
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34
src/audio_core/cubeb_sink.h
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@ -0,0 +1,34 @@
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// Copyright 2018 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <cstddef>
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#include <memory>
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#include "audio_core/sink.h"
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namespace AudioCore {
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class CubebSink final : public Sink {
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public:
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CubebSink();
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~CubebSink() override;
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unsigned int GetNativeSampleRate() const override;
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void EnqueueSamples(const s16* samples, size_t sample_count) override;
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size_t SamplesInQueue() const override;
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std::vector<std::string> GetDeviceList() const override;
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void SetDevice(int device_id) override;
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private:
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struct Impl;
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std::unique_ptr<Impl> impl;
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int device_id;
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std::vector<std::string> device_list;
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};
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} // namespace AudioCore
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@ -11,12 +11,14 @@
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#ifdef HAVE_SDL2
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#include "audio_core/sdl2_sink.h"
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#endif
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#include "audio_core/cubeb_sink.h"
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#include "common/logging/log.h"
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namespace AudioCore {
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// g_sink_details is ordered in terms of desirability, with the best choice at the top.
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const std::vector<SinkDetails> g_sink_details = {
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{"cubeb", []() { return std::make_unique<CubebSink>(); }},
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#ifdef HAVE_SDL2
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{"sdl2", []() { return std::make_unique<SDL2Sink>(); }},
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#endif
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