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authorJames Rowe <jroweboy@gmail.com>2018-01-12 03:21:20 +0100
committerJames Rowe <jroweboy@gmail.com>2018-01-13 03:11:03 +0100
commitebf9a784a9f7f4148a669dbb39e7cd50df779a14 (patch)
treed585685a1c0a34b903af1d086d62560bf56bb29f /src/audio_core/sdl2_sink.cpp
parentconfig: Default CPU core to Unicorn. (diff)
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Diffstat (limited to 'src/audio_core/sdl2_sink.cpp')
-rw-r--r--src/audio_core/sdl2_sink.cpp147
1 files changed, 0 insertions, 147 deletions
diff --git a/src/audio_core/sdl2_sink.cpp b/src/audio_core/sdl2_sink.cpp
deleted file mode 100644
index 933c5f16d..000000000
--- a/src/audio_core/sdl2_sink.cpp
+++ /dev/null
@@ -1,147 +0,0 @@
-// Copyright 2016 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#include <list>
-#include <numeric>
-#include <SDL.h>
-#include "audio_core/audio_core.h"
-#include "audio_core/sdl2_sink.h"
-#include "common/assert.h"
-#include "common/logging/log.h"
-#include "core/settings.h"
-
-namespace AudioCore {
-
-struct SDL2Sink::Impl {
- unsigned int sample_rate = 0;
-
- SDL_AudioDeviceID audio_device_id = 0;
-
- std::list<std::vector<s16>> queue;
-
- static void Callback(void* impl_, u8* buffer, int buffer_size_in_bytes);
-};
-
-SDL2Sink::SDL2Sink() : impl(std::make_unique<Impl>()) {
- if (SDL_Init(SDL_INIT_AUDIO) < 0) {
- LOG_CRITICAL(Audio_Sink, "SDL_Init(SDL_INIT_AUDIO) failed with: %s", SDL_GetError());
- impl->audio_device_id = 0;
- return;
- }
-
- SDL_AudioSpec desired_audiospec;
- SDL_zero(desired_audiospec);
- desired_audiospec.format = AUDIO_S16;
- desired_audiospec.channels = 2;
- desired_audiospec.freq = native_sample_rate;
- desired_audiospec.samples = 512;
- desired_audiospec.userdata = impl.get();
- desired_audiospec.callback = &Impl::Callback;
-
- SDL_AudioSpec obtained_audiospec;
- SDL_zero(obtained_audiospec);
-
- int device_count = SDL_GetNumAudioDevices(0);
- device_list.clear();
- for (int i = 0; i < device_count; ++i) {
- device_list.push_back(SDL_GetAudioDeviceName(i, 0));
- }
-
- const char* device = nullptr;
-
- if (device_count >= 1 && Settings::values.audio_device_id != "auto" &&
- !Settings::values.audio_device_id.empty()) {
- device = Settings::values.audio_device_id.c_str();
- }
-
- impl->audio_device_id = SDL_OpenAudioDevice(device, false, &desired_audiospec,
- &obtained_audiospec, SDL_AUDIO_ALLOW_ANY_CHANGE);
- if (impl->audio_device_id <= 0) {
- LOG_CRITICAL(Audio_Sink, "SDL_OpenAudioDevice failed with code %d for device \"%s\"",
- impl->audio_device_id, Settings::values.audio_device_id.c_str());
- return;
- }
-
- impl->sample_rate = obtained_audiospec.freq;
-
- // SDL2 audio devices start out paused, unpause it:
- SDL_PauseAudioDevice(impl->audio_device_id, 0);
-}
-
-SDL2Sink::~SDL2Sink() {
- if (impl->audio_device_id <= 0)
- return;
-
- SDL_CloseAudioDevice(impl->audio_device_id);
-}
-
-unsigned int SDL2Sink::GetNativeSampleRate() const {
- if (impl->audio_device_id <= 0)
- return native_sample_rate;
-
- return impl->sample_rate;
-}
-
-std::vector<std::string> SDL2Sink::GetDeviceList() const {
- return device_list;
-}
-
-void SDL2Sink::EnqueueSamples(const s16* samples, size_t sample_count) {
- if (impl->audio_device_id <= 0)
- return;
-
- SDL_LockAudioDevice(impl->audio_device_id);
- impl->queue.emplace_back(samples, samples + sample_count * 2);
- SDL_UnlockAudioDevice(impl->audio_device_id);
-}
-
-size_t SDL2Sink::SamplesInQueue() const {
- if (impl->audio_device_id <= 0)
- return 0;
-
- SDL_LockAudioDevice(impl->audio_device_id);
-
- size_t total_size = std::accumulate(impl->queue.begin(), impl->queue.end(),
- static_cast<size_t>(0), [](size_t sum, const auto& buffer) {
- // Division by two because each stereo sample is made of
- // two s16.
- return sum + buffer.size() / 2;
- });
-
- SDL_UnlockAudioDevice(impl->audio_device_id);
-
- return total_size;
-}
-
-void SDL2Sink::SetDevice(int device_id) {
- this->device_id = device_id;
-}
-
-void SDL2Sink::Impl::Callback(void* impl_, u8* buffer, int buffer_size_in_bytes) {
- Impl* impl = reinterpret_cast<Impl*>(impl_);
-
- size_t remaining_size = static_cast<size_t>(buffer_size_in_bytes) /
- sizeof(s16); // Keep track of size in 16-bit increments.
-
- while (remaining_size > 0 && !impl->queue.empty()) {
- if (impl->queue.front().size() <= remaining_size) {
- memcpy(buffer, impl->queue.front().data(), impl->queue.front().size() * sizeof(s16));
- buffer += impl->queue.front().size() * sizeof(s16);
- remaining_size -= impl->queue.front().size();
- impl->queue.pop_front();
- } else {
- memcpy(buffer, impl->queue.front().data(), remaining_size * sizeof(s16));
- buffer += remaining_size * sizeof(s16);
- impl->queue.front().erase(impl->queue.front().begin(),
- impl->queue.front().begin() + remaining_size);
- remaining_size = 0;
- }
- }
-
- if (remaining_size > 0) {
- memset(buffer, 0, remaining_size * sizeof(s16));
- }
-}
-
-} // namespace AudioCore