dolphin/Source/Core/AudioCommon/AudioCommon.cpp

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// Copyright 2009 Dolphin Emulator Project
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// Licensed under GPLv2+
// Refer to the license.txt file included.
#include "AudioCommon/AudioCommon.h"
#include "AudioCommon/AlsaSoundStream.h"
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#include "AudioCommon/CubebStream.h"
#include "AudioCommon/Mixer.h"
#include "AudioCommon/NullSoundStream.h"
#include "AudioCommon/OpenALStream.h"
#include "AudioCommon/OpenSLESStream.h"
#include "AudioCommon/PulseAudioStream.h"
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#include "AudioCommon/WASAPIStream.h"
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#include "Common/Common.h"
#include "Common/FileUtil.h"
#include "Common/Logging/Log.h"
#include "Core/ConfigManager.h"
#include "Core/HW/AudioInterface.h"
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// This shouldn't be a global, at least not here.
std::unique_ptr<SoundStream> g_sound_stream;
namespace AudioCommon
{
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static bool s_audio_dump_start = false;
static bool s_sound_stream_running = false;
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constexpr int AUDIO_VOLUME_MIN = 0;
constexpr int AUDIO_VOLUME_MAX = 100;
static std::unique_ptr<SoundStream> CreateSoundStreamForBackend(std::string_view backend)
{
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if (backend == BACKEND_CUBEB)
return std::make_unique<CubebStream>();
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else if (backend == BACKEND_OPENAL && OpenALStream::isValid())
return std::make_unique<OpenALStream>();
else if (backend == BACKEND_NULLSOUND)
return std::make_unique<NullSound>();
else if (backend == BACKEND_ALSA && AlsaSound::isValid())
return std::make_unique<AlsaSound>();
else if (backend == BACKEND_PULSEAUDIO && PulseAudio::isValid())
return std::make_unique<PulseAudio>();
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else if (backend == BACKEND_OPENSLES && OpenSLESStream::isValid())
return std::make_unique<OpenSLESStream>();
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else if (backend == BACKEND_WASAPI && WASAPIStream::isValid())
return std::make_unique<WASAPIStream>();
return {};
}
void InitSoundStream()
{
std::string backend = SConfig::GetInstance().sBackend;
g_sound_stream = CreateSoundStreamForBackend(backend);
if (!g_sound_stream)
{
WARN_LOG(AUDIO, "Unknown backend %s, using %s instead.", backend.c_str(),
GetDefaultSoundBackend().c_str());
backend = GetDefaultSoundBackend();
g_sound_stream = CreateSoundStreamForBackend(GetDefaultSoundBackend());
}
if (!g_sound_stream || !g_sound_stream->Init())
{
WARN_LOG(AUDIO, "Could not initialize backend %s, using %s instead.", backend.c_str(),
BACKEND_NULLSOUND);
g_sound_stream = std::make_unique<NullSound>();
g_sound_stream->Init();
}
// Ideally these two calls would be done in AudioInterface::Init so that we don't
// need to have a dependency on AudioInterface here, but this has to be done
// after creating g_sound_stream (above) and before starting audio dumping (below)
g_sound_stream->GetMixer()->SetDMAInputSampleRate(AudioInterface::GetAIDSampleRate());
g_sound_stream->GetMixer()->SetStreamInputSampleRate(AudioInterface::GetAISSampleRate());
UpdateSoundStream();
SetSoundStreamRunning(true);
if (SConfig::GetInstance().m_DumpAudio && !s_audio_dump_start)
StartAudioDump();
}
void ShutdownSoundStream()
{
INFO_LOG(AUDIO, "Shutting down sound stream");
if (SConfig::GetInstance().m_DumpAudio && s_audio_dump_start)
StopAudioDump();
SetSoundStreamRunning(false);
g_sound_stream.reset();
INFO_LOG(AUDIO, "Done shutting down sound stream");
}
std::string GetDefaultSoundBackend()
{
std::string backend = BACKEND_NULLSOUND;
#if defined ANDROID
backend = BACKEND_OPENSLES;
#elif defined __linux__
if (AlsaSound::isValid())
backend = BACKEND_ALSA;
#elif defined(__APPLE__) || defined(_WIN32)
backend = BACKEND_CUBEB;
#endif
return backend;
}
DPL2Quality GetDefaultDPL2Quality()
{
return DPL2Quality::High;
}
std::vector<std::string> GetSoundBackends()
{
std::vector<std::string> backends;
backends.emplace_back(BACKEND_NULLSOUND);
backends.emplace_back(BACKEND_CUBEB);
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if (AlsaSound::isValid())
backends.emplace_back(BACKEND_ALSA);
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if (PulseAudio::isValid())
backends.emplace_back(BACKEND_PULSEAUDIO);
if (OpenALStream::isValid())
backends.emplace_back(BACKEND_OPENAL);
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if (OpenSLESStream::isValid())
backends.emplace_back(BACKEND_OPENSLES);
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if (WASAPIStream::isValid())
backends.emplace_back(BACKEND_WASAPI);
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return backends;
}
bool SupportsDPL2Decoder(std::string_view backend)
{
#ifndef __APPLE__
if (backend == BACKEND_OPENAL)
return true;
#endif
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if (backend == BACKEND_CUBEB)
return true;
if (backend == BACKEND_PULSEAUDIO)
return true;
return false;
}
bool SupportsLatencyControl(std::string_view backend)
{
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return backend == BACKEND_OPENAL || backend == BACKEND_WASAPI;
}
bool SupportsVolumeChanges(std::string_view backend)
{
// FIXME: this one should ask the backend whether it supports it.
// but getting the backend from string etc. is probably
// too much just to enable/disable a stupid slider...
return backend == BACKEND_CUBEB || backend == BACKEND_OPENAL || backend == BACKEND_WASAPI;
}
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void UpdateSoundStream()
{
if (g_sound_stream)
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{
int volume = SConfig::GetInstance().m_IsMuted ? 0 : SConfig::GetInstance().m_Volume;
g_sound_stream->SetVolume(volume);
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}
}
void SetSoundStreamRunning(bool running)
{
if (!g_sound_stream)
return;
if (s_sound_stream_running == running)
return;
s_sound_stream_running = running;
if (g_sound_stream->SetRunning(running))
return;
if (running)
ERROR_LOG(AUDIO, "Error starting stream.");
else
ERROR_LOG(AUDIO, "Error stopping stream.");
}
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void SendAIBuffer(const short* samples, unsigned int num_samples)
{
if (!g_sound_stream)
return;
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if (SConfig::GetInstance().m_DumpAudio && !s_audio_dump_start)
StartAudioDump();
else if (!SConfig::GetInstance().m_DumpAudio && s_audio_dump_start)
StopAudioDump();
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Mixer* pMixer = g_sound_stream->GetMixer();
if (pMixer && samples)
{
pMixer->PushSamples(samples, num_samples);
}
g_sound_stream->Update();
}
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void StartAudioDump()
{
std::string audio_file_name_dtk = File::GetUserPath(D_DUMPAUDIO_IDX) + "dtkdump.wav";
std::string audio_file_name_dsp = File::GetUserPath(D_DUMPAUDIO_IDX) + "dspdump.wav";
File::CreateFullPath(audio_file_name_dtk);
File::CreateFullPath(audio_file_name_dsp);
g_sound_stream->GetMixer()->StartLogDTKAudio(audio_file_name_dtk);
g_sound_stream->GetMixer()->StartLogDSPAudio(audio_file_name_dsp);
s_audio_dump_start = true;
}
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void StopAudioDump()
{
if (!g_sound_stream)
return;
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g_sound_stream->GetMixer()->StopLogDTKAudio();
g_sound_stream->GetMixer()->StopLogDSPAudio();
s_audio_dump_start = false;
}
void IncreaseVolume(unsigned short offset)
{
SConfig::GetInstance().m_IsMuted = false;
int& currentVolume = SConfig::GetInstance().m_Volume;
currentVolume += offset;
if (currentVolume > AUDIO_VOLUME_MAX)
currentVolume = AUDIO_VOLUME_MAX;
UpdateSoundStream();
}
void DecreaseVolume(unsigned short offset)
{
SConfig::GetInstance().m_IsMuted = false;
int& currentVolume = SConfig::GetInstance().m_Volume;
currentVolume -= offset;
if (currentVolume < AUDIO_VOLUME_MIN)
currentVolume = AUDIO_VOLUME_MIN;
UpdateSoundStream();
}
void ToggleMuteVolume()
{
bool& isMuted = SConfig::GetInstance().m_IsMuted;
isMuted = !isMuted;
UpdateSoundStream();
}
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} // namespace AudioCommon