dolphin/Source/Core/AudioCommon/AOSoundStream.cpp

85 lines
1.5 KiB
C++

// Copyright 2013 Dolphin Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.
#include <functional>
#include <string.h>
#include "AudioCommon/AOSoundStream.h"
#include "AudioCommon/Mixer.h"
#if defined(HAVE_AO) && HAVE_AO
void AOSound::SoundLoop()
{
Common::SetCurrentThreadName("Audio thread - ao");
uint_32 numBytesToRender = 256;
ao_initialize();
default_driver = ao_default_driver_id();
format.bits = 16;
format.channels = 2;
format.rate = m_mixer->GetSampleRate();
format.byte_format = AO_FMT_LITTLE;
device = ao_open_live(default_driver, &format, NULL /* no options */);
if (!device)
{
PanicAlertT("AudioCommon: Error opening AO device.\n");
ao_shutdown();
Stop();
return;
}
buf_size = format.bits/8 * format.channels * format.rate;
while (!threadData)
{
m_mixer->Mix(realtimeBuffer, numBytesToRender >> 2);
{
std::lock_guard<std::mutex> lk(soundCriticalSection);
ao_play(device, (char*)realtimeBuffer, numBytesToRender);
}
soundSyncEvent.Wait();
}
}
bool AOSound::Start()
{
memset(realtimeBuffer, 0, sizeof(realtimeBuffer));
thread = std::thread(std::mem_fun(&AOSound::SoundLoop), this);
return true;
}
void AOSound::Update()
{
soundSyncEvent.Set();
}
void AOSound::Stop()
{
threadData = 1;
soundSyncEvent.Set();
{
std::lock_guard<std::mutex> lk(soundCriticalSection);
thread.join();
if (device)
ao_close(device);
ao_shutdown();
device = NULL;
}
}
AOSound::~AOSound()
{
}
#endif