mirror of
https://github.com/love2d/love.git
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rude
136 lines
2.8 KiB
C++
136 lines
2.8 KiB
C++
/**
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* Copyright (c) 2006-2009 LOVE Development Team
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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**/
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#include "Music.h"
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// STD
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#include <iostream>
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namespace love
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{
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namespace audio
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{
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namespace openal
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{
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Music::Music(Pool * pool, love::sound::Decoder * decoder)
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: pool(pool), decoder(decoder), source(0)
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{
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decoder->retain();
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alGenBuffers(NUM_BUFFERS, buffers);
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}
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Music::~Music()
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{
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decoder->release();
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alDeleteBuffers(NUM_BUFFERS, buffers);
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}
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love::audio::Music * Music::clone()
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{
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return new Music(pool, decoder->clone());
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}
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void Music::play(love::audio::Source * s)
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{
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source = pool->find(s);
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if(source)
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{
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for(int i = 0; i < NUM_BUFFERS; i++)
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{
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if(!stream(buffers[i]))
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{
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std::cout << "Could not stream music." << std::endl;
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return;
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}
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}
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alSourceQueueBuffers(source, NUM_BUFFERS, buffers);
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}
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}
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void Music::update(love::audio::Source * s)
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{
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if(source)
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{
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// Number of processed buffers.
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ALint processed;
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alGetSourcei(source, AL_BUFFERS_PROCESSED, &processed);
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while(processed--)
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{
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ALuint buffer;
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// Get a free buffer.
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alSourceUnqueueBuffers(source, 1, &buffer);
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if(stream(buffer))
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alSourceQueueBuffers(source, 1, &buffer);
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}
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}
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}
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void Music::stop(love::audio::Source * s)
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{
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if(source)
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{
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ALuint bufs[NUM_BUFFERS];
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alSourceStop(source);
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alSourceUnqueueBuffers(source, NUM_BUFFERS, bufs);
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source = 0;
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}
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}
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void Music::rewind(love::audio::Source * s)
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{
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// Stop source, unqueue buffers.
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stop(s);
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// Rewind data pointer.
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decoder->rewind();
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// Requeue buffers.
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play(s);
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}
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bool Music::stream(ALuint buffer)
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{
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// Get more sound data.
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int decoded = decoder->decode();
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int fmt = pool->getFormat(decoder->getChannels(), decoder->getBits());
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if(fmt == 0)
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return false;
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if(decoded > 0)
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{
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alBufferData(buffer, fmt, decoder->getBuffer(),
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decoder->getSize(), decoder->getSampleRate());
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return true;
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}
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return false;
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}
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} // openal
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} // audio
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} // love
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