diff options
Diffstat (limited to 'src/audio_core/sdl2_sink.cpp')
-rw-r--r-- | src/audio_core/sdl2_sink.cpp | 160 |
1 files changed, 0 insertions, 160 deletions
diff --git a/src/audio_core/sdl2_sink.cpp b/src/audio_core/sdl2_sink.cpp deleted file mode 100644 index a10ba4044..000000000 --- a/src/audio_core/sdl2_sink.cpp +++ /dev/null @@ -1,160 +0,0 @@ -// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project -// SPDX-License-Identifier: GPL-2.0-or-later - -#include <algorithm> -#include <atomic> -#include <cstring> -#include "audio_core/sdl2_sink.h" -#include "audio_core/stream.h" -#include "common/assert.h" -#include "common/logging/log.h" -//#include "common/settings.h" - -// Ignore -Wimplicit-fallthrough due to https://github.com/libsdl-org/SDL/issues/4307 -#ifdef __clang__ -#pragma clang diagnostic push -#pragma clang diagnostic ignored "-Wimplicit-fallthrough" -#endif -#include <SDL.h> -#ifdef __clang__ -#pragma clang diagnostic pop -#endif - -namespace AudioCore { - -class SDLSinkStream final : public SinkStream { -public: - SDLSinkStream(u32 sample_rate, u32 num_channels_, const std::string& output_device) - : num_channels{std::min(num_channels_, 6u)} { - - SDL_AudioSpec spec; - spec.freq = sample_rate; - spec.channels = static_cast<u8>(num_channels); - spec.format = AUDIO_S16SYS; - spec.samples = 4096; - spec.callback = nullptr; - - SDL_AudioSpec obtained; - if (output_device.empty()) { - dev = SDL_OpenAudioDevice(nullptr, 0, &spec, &obtained, 0); - } else { - dev = SDL_OpenAudioDevice(output_device.c_str(), 0, &spec, &obtained, 0); - } - - if (dev == 0) { - LOG_CRITICAL(Audio_Sink, "Error opening sdl audio device: {}", SDL_GetError()); - return; - } - - SDL_PauseAudioDevice(dev, 0); - } - - ~SDLSinkStream() override { - if (dev == 0) { - return; - } - - SDL_CloseAudioDevice(dev); - } - - void EnqueueSamples(u32 source_num_channels, const std::vector<s16>& samples) override { - if (source_num_channels > num_channels) { - // Downsample 6 channels to 2 - ASSERT_MSG(source_num_channels == 6, "Channel count must be 6"); - - std::vector<s16> buf; - buf.reserve(samples.size() * num_channels / source_num_channels); - for (std::size_t i = 0; i < samples.size(); i += source_num_channels) { - // Downmixing implementation taken from the ATSC standard - const s16 left{samples[i + 0]}; - const s16 right{samples[i + 1]}; - const s16 center{samples[i + 2]}; - const s16 surround_left{samples[i + 4]}; - const s16 surround_right{samples[i + 5]}; - // Not used in the ATSC reference implementation - [[maybe_unused]] const s16 low_frequency_effects{samples[i + 3]}; - - constexpr s32 clev{707}; // center mixing level coefficient - constexpr s32 slev{707}; // surround mixing level coefficient - - buf.push_back(static_cast<s16>(left + (clev * center / 1000) + - (slev * surround_left / 1000))); - buf.push_back(static_cast<s16>(right + (clev * center / 1000) + - (slev * surround_right / 1000))); - } - int ret = SDL_QueueAudio(dev, static_cast<const void*>(buf.data()), - static_cast<u32>(buf.size() * sizeof(s16))); - if (ret < 0) - LOG_WARNING(Audio_Sink, "Could not queue audio buffer: {}", SDL_GetError()); - return; - } - - int ret = SDL_QueueAudio(dev, static_cast<const void*>(samples.data()), - static_cast<u32>(samples.size() * sizeof(s16))); - if (ret < 0) - LOG_WARNING(Audio_Sink, "Could not queue audio buffer: {}", SDL_GetError()); - } - - std::size_t SamplesInQueue(u32 channel_count) const override { - if (dev == 0) - return 0; - - return SDL_GetQueuedAudioSize(dev) / (channel_count * sizeof(s16)); - } - - void Flush() override { - should_flush = true; - } - - u32 GetNumChannels() const { - return num_channels; - } - -private: - SDL_AudioDeviceID dev = 0; - u32 num_channels{}; - std::atomic<bool> should_flush{}; -}; - -SDLSink::SDLSink(std::string_view target_device_name) { - if (!SDL_WasInit(SDL_INIT_AUDIO)) { - if (SDL_InitSubSystem(SDL_INIT_AUDIO) < 0) { - LOG_CRITICAL(Audio_Sink, "SDL_InitSubSystem audio failed: {}", SDL_GetError()); - return; - } - } - - if (target_device_name != auto_device_name && !target_device_name.empty()) { - output_device = target_device_name; - } else { - output_device.clear(); - } -} - -SDLSink::~SDLSink() = default; - -SinkStream& SDLSink::AcquireSinkStream(u32 sample_rate, u32 num_channels, const std::string&) { - sink_streams.push_back( - std::make_unique<SDLSinkStream>(sample_rate, num_channels, output_device)); - return *sink_streams.back(); -} - -std::vector<std::string> ListSDLSinkDevices() { - std::vector<std::string> device_list; - - if (!SDL_WasInit(SDL_INIT_AUDIO)) { - if (SDL_InitSubSystem(SDL_INIT_AUDIO) < 0) { - LOG_CRITICAL(Audio_Sink, "SDL_InitSubSystem audio failed: {}", SDL_GetError()); - return {}; - } - } - - const int device_count = SDL_GetNumAudioDevices(0); - for (int i = 0; i < device_count; ++i) { - device_list.emplace_back(SDL_GetAudioDeviceName(i, 0)); - } - - return device_list; -} - -} // namespace AudioCore |