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/*
The MIT License (MIT)
Copyright (c) 2011 Asier
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.
*/
package com.infinityk.simplesoundengine;
import im.bci.jnuit.lwjgl.assets.VirtualFileSystem;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.IntBuffer;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.lwjgl.BufferUtils;
import org.lwjgl.openal.AL10;
import org.lwjgl.openal.OpenALException;
/**
* A sound implementation wrapped round a player which reads (and potentially) rereads
* a stream. This supplies streaming audio
*
* @author kevin
* @author Nathan Sweet
* @author Rockstar playAsMusic cleanup
* @author Asier
*/
class Streamer {
private static final Logger logger = Logger.getLogger(Streamer.class.getName());
public static final int BUFFER_COUNT = 3;
private static final int sectionSize = 4096 * 20;
private final VirtualFileSystem vfs;
private int source;
private final byte[] buffer;
private IntBuffer buffersId;
private int remainingBufferCount;
private final ByteBuffer bufferData;
private final IntBuffer auxBuffer;
private OggInputStream audio;
private String audioFile;
private boolean loop;
private boolean idle;
private boolean initiated;
private boolean paused;
public Streamer(VirtualFileSystem vfs) {
buffer = new byte[sectionSize];
bufferData = BufferUtils.createByteBuffer(sectionSize);
auxBuffer = BufferUtils.createIntBuffer(1);
idle = true;
this.vfs = vfs;
}
public void init() {
if(!initiated){
buffersId = BufferUtils.createIntBuffer(BUFFER_COUNT);
AL10.alGenBuffers(buffersId);
if (AL10.alGetError() != AL10.AL_NO_ERROR) {
logger.log(Level.WARNING, "Initializing buffers of music streamer {0}", AL10.alGetError());
}
source = AL10.alGenSources();
if (AL10.alGetError() != AL10.AL_NO_ERROR) {
logger.log(Level.WARNING, "Initializing source of music streamer {0}", AL10.alGetError());
}
initiated = true;
}
}
public void destroy() {
if(initiated){
stop();
AL10.alSourcei(source, AL10.AL_BUFFER, 0);
AL10.alDeleteSources(source);
AL10.alDeleteBuffers(buffersId);
initiated = false;
}
}
public void setSourceFile(String f) {
stop();
audioFile = f;
}
public void setPause(boolean pause) {
if (idle || !initiated) {
return;
}
if (pause && !paused) {
paused = true;
AL10.alSourcePause(source);
} else if (paused) {
paused = false;
AL10.alSourcePlay(source);
}
}
public void stop() {
if(!idle || !initiated){
AL10.alSourceStop(source);
unqueueBuffers();
AL10.alSourcei(source, AL10.AL_BUFFER, 0);
idle = true;
}
}
public void play(boolean loop) throws IOException {
if(!initiated) {return;}
this.loop = loop;
if(!idle){
stop();
}
initStreams();
startPlayback();
idle = false;
paused = false;
}
public boolean poll() {
if (idle || !initiated || paused) {
return false;
}
for (int processed = AL10.alGetSourcei(source, AL10.AL_BUFFERS_PROCESSED);
processed > 0; processed--) {
auxBuffer.clear();
AL10.alSourceUnqueueBuffers(source, auxBuffer);
int bufferIndex = auxBuffer.get(0);
if (stream(bufferIndex)) {
AL10.alSourceQueueBuffers(source, auxBuffer);
if (AL10.alGetSourcei(source, AL10.AL_SOURCE_STATE) != AL10.AL_PLAYING) {
AL10.alSourcePlay(source);
}
} else {
remainingBufferCount--;
if (remainingBufferCount <= 0) {
stop();
} else {
if (AL10.alGetSourcei(source, AL10.AL_SOURCE_STATE) != AL10.AL_PLAYING) {
AL10.alSourcePlay(source);
}
}
}
}
return true;
}
private void initStreams() throws IOException {
if (audio != null) {
audio.close();
}
if (audioFile != null) {
audio = new OggInputStream(vfs.open(audioFile));
} else {
throw new IOException("File not setted");
}
remainingBufferCount = BUFFER_COUNT;
}
private boolean stream(int bufferId) {
try {
int count = audio.read(buffer);
if (count != -1) {
bufferData.clear();
bufferData.put(buffer, 0, count);
bufferData.flip();
int format = audio.getChannels() > 1 ? AL10.AL_FORMAT_STEREO16 : AL10.AL_FORMAT_MONO16;
try {
AL10.alBufferData(bufferId, format, bufferData, audio.getRate());
} catch (OpenALException e) {
logger.log(Level.WARNING, "Failed to loop buffer: " + bufferId + " " + format + " " + count + " " + audio.getRate(), e);
return false;
}
} else {
if (loop) {
initStreams();
stream(bufferId);
} else {
return false;
}
}
return true;
} catch (IOException e) {
logger.log(Level.WARNING, "audio error", e);
return false;
}
}
private void startPlayback() {
AL10.alSourcei(source, AL10.AL_LOOPING, AL10.AL_FALSE);
AL10.alSourcef(source, AL10.AL_PITCH, 1.0f);
AL10.alSourcef(source, AL10.AL_GAIN, 1.0f);
remainingBufferCount = BUFFER_COUNT;
for (int i = 0; i < BUFFER_COUNT; i++) {
stream(buffersId.get(i));
}
AL10.alSourceQueueBuffers(source, buffersId);
AL10.alSourcePlay(source);
}
private void unqueueBuffers() {
for(int queued = AL10.alGetSourcei(source, AL10.AL_BUFFERS_QUEUED);
queued>0;queued--){
AL10.alSourceUnqueueBuffers(source, auxBuffer);
}
}
public float getGain() {
return AL10.alGetSourcef(source, AL10.AL_GAIN);
}
public void setGain(float gain) {
AL10.alSourcef(source, AL10.AL_GAIN, gain);
}
}
