dolphin/Source/Plugins/Plugin_DSP_HLE/Src/PCHW/AOSoundStream.cpp

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// Copyright (C) 2003-2009 Dolphin Project.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/
#include <string.h>
#include "AOSoundStream.h"
#if defined(HAVE_AO) && HAVE_AO
void AOSound::SoundLoop()
{
ao_initialize();
default_driver = ao_default_driver_id();
format.bits = 16;
format.channels = 2;
format.rate = sampleRate;
format.byte_format = AO_FMT_LITTLE;
device = ao_open_live(default_driver, &format, NULL /* no options */);
if (device == NULL) {
PanicAlert("DSP_HLE: Error opening AO device.\n");
ao_shutdown();
Stop();
return;
}
buf_size = format.bits/8 * format.channels * format.rate;
while (!threadData) {
soundCriticalSection->Enter();
uint_32 numBytesToRender = 256;
(*callback)(realtimeBuffer, numBytesToRender >> 2, 16, sampleRate, 2);
ao_play(device, (char*)realtimeBuffer, numBytesToRender);
soundCriticalSection->Leave();
soundSyncEvent->Wait();
}
}
void *soundThread(void *args) {
((AOSound *)args)->SoundLoop();
return NULL;
}
bool AOSound::Start() {
memset(realtimeBuffer, 0, sizeof(realtimeBuffer));
soundCriticalSection = new Common::CriticalSection(1);
thread = new Common::Thread(soundThread, (void *)this);
soundSyncEvent = new Common::Event();
soundSyncEvent->Init();
return true;
}
void AOSound::Update() {
soundSyncEvent->Set();
}
void AOSound::Stop()
{
soundCriticalSection->Enter();
threadData = 1;
soundSyncEvent->Set();
soundCriticalSection->Leave();
soundSyncEvent->Shutdown();
delete soundCriticalSection;
delete thread;
delete soundSyncEvent;
ao_close(device);
device = NULL;
ao_shutdown();
}
#endif