tibia-client/src/framework/sound/streamsoundsource.cpp

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/*
* Copyright (c) 2010-2012 OTClient <https://github.com/edubart/otclient>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "streamsoundsource.h"
#include "soundbuffer.h"
#include "soundfile.h"
#include <framework/util/databuffer.h>
StreamSoundSource::StreamSoundSource()
{
for(auto& buffer : m_buffers)
buffer = SoundBufferPtr(new SoundBuffer);
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m_downMix = NoDownMix;
}
StreamSoundSource::~StreamSoundSource()
{
stop();
}
void StreamSoundSource::setSoundFile(const SoundFilePtr& soundFile)
{
m_soundFile = soundFile;
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}
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void StreamSoundSource::play()
{
if(!m_soundFile) {
logError("there is not sound file to play the stream");
return;
}
queueBuffers();
SoundSource::play();
}
void StreamSoundSource::stop()
{
SoundSource::stop();
unqueueBuffers();
}
void StreamSoundSource::queueBuffers()
{
ALint queued;
alGetSourcei(m_sourceId, AL_BUFFERS_QUEUED, &queued);
for(int i = 0; i < STREAM_FRAGMENTS - queued; ++i) {
if(!fillBufferAndQueue(m_buffers[i]->getBufferId()))
break;
}
}
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void StreamSoundSource::unqueueBuffers()
{
ALint queued;
alGetSourcei(m_sourceId, AL_BUFFERS_QUEUED, &queued);
for(int i = 0; i < queued; ++i) {
ALuint buffer;
alSourceUnqueueBuffers(m_sourceId, 1, &buffer);
}
}
void StreamSoundSource::update()
{
SoundSource::update();
ALint processed = 0;
alGetSourcei(m_sourceId, AL_BUFFERS_PROCESSED, &processed);
for(ALint i = 0; i < processed; ++i) {
ALuint buffer;
alSourceUnqueueBuffers(m_sourceId, 1, &buffer);
//SoundManager::check_al_error("Couldn't unqueue audio buffer: ");
if(!fillBufferAndQueue(buffer))
break;
}
if(!isPlaying()) {
if(processed == 0 || !m_looping)
return;
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logTraceError("restarting audio source because of buffer underrun");
play();
}
}
bool StreamSoundSource::fillBufferAndQueue(ALuint buffer)
{
// fill buffer
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static DataBuffer<char> bufferData(STREAM_FRAGMENT_SIZE);
ALenum format = m_soundFile->getSampleFormat();
int bytesRead = 0;
do {
bytesRead += m_soundFile->read(&bufferData[bytesRead], STREAM_FRAGMENT_SIZE - bytesRead);
// end of sound file
if(bytesRead < STREAM_FRAGMENT_SIZE) {
if(m_looping)
m_soundFile->reset();
else
break;
}
} while(bytesRead < STREAM_FRAGMENT_SIZE);
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bool done = bytesRead >= STREAM_FRAGMENT_SIZE;
if(m_downMix != NoDownMix) {
if(format == AL_FORMAT_STEREO16) {
if(bytesRead > 0) {
uint16_t *data = (uint16_t*)bufferData.data();
bytesRead /= 2;
for(int i=0;i<bytesRead;i++)
data[i] = data[2*i + (m_downMix == DownMixLeft ? 0 : 1)];
}
format = AL_FORMAT_MONO16;
}
}
if(bytesRead > 0) {
alBufferData(buffer, format, &bufferData[0], bytesRead, m_soundFile->getRate());
ALenum err = alGetError();
if(err != AL_NO_ERROR)
logError("unable to refill audio buffer for '", m_soundFile->getName(), "': ", alGetString(err));
alSourceQueueBuffers(m_sourceId, 1, &buffer);
err = alGetError();
if(err != AL_NO_ERROR)
logError("unable to queue audio buffer for '", m_soundFile->getName(), "': ", alGetString(err));
}
// return false if there aren't more buffers to fill
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return done;
}
void StreamSoundSource::downMix(StreamSoundSource::DownMix downMix)
{
if(!m_soundFile) {
logError("down mix must be set after setting a sound file");
return;
}
if(m_soundFile->getSampleFormat() != AL_FORMAT_STEREO16) {
logError("can only downmix 16 bit stereo audio files");
return;
}
m_downMix = downMix;
}