FmodExSoundSystem.java

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package org.open2jam.sound;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.HashMap;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.jouvieje.fmodex.Channel;
import org.jouvieje.fmodex.ChannelGroup;
import org.jouvieje.fmodex.DSP;
import org.jouvieje.fmodex.FmodEx;
import org.jouvieje.fmodex.Init;
import org.jouvieje.fmodex.Sound;
import org.jouvieje.fmodex.SoundGroup;
import org.jouvieje.fmodex.defines.FMOD_INITFLAGS;
import org.jouvieje.fmodex.defines.FMOD_MODE;
import org.jouvieje.fmodex.enumerations.FMOD_CHANNELINDEX;
import org.jouvieje.fmodex.enumerations.FMOD_DSP_PITCHSHIFT;
import org.jouvieje.fmodex.enumerations.FMOD_DSP_TYPE;
import org.jouvieje.fmodex.enumerations.FMOD_RESULT;
import org.jouvieje.fmodex.enumerations.FMOD_SOUND_FORMAT;
import org.jouvieje.fmodex.exceptions.InitException;
import org.jouvieje.fmodex.structures.FMOD_CREATESOUNDEXINFO;
import org.open2jam.parsers.utils.ByteHelper;
import org.open2jam.parsers.utils.SampleData;

/**
 *
 * @author dttvb
 */
public class FmodExSoundSystem implements SoundSystem {

    private org.jouvieje.fmodex.System system;
    
    private SoundGroup masterSoundGroup = new SoundGroup();
    private ChannelGroup masterChannelGroup = new ChannelGroup();
    private ChannelGroup bgmGroup = new ChannelGroup();
    private ChannelGroup keyGroup = new ChannelGroup();
    
    private DSP dsp = new DSP();
    
    private int nextChannelID = 0;
    
    public FmodExSoundSystem(int bufferSize) throws SoundSystemException {
        
        try
        {
            Init.loadLibraries();
        }
        catch(InitException e)
        {
            throw new SoundSystemInitException(e);
        }
        
        system = new org.jouvieje.fmodex.System();
        errorCheck(FmodEx.System_Create(system));
        errorCheck(system.setDSPBufferSize(bufferSize, 2));
        errorCheck(system.setSoftwareChannels(512));
        errorCheck(system.init(512, FMOD_INITFLAGS.FMOD_INIT_NORMAL, null));
        errorCheck(system.getMasterSoundGroup(masterSoundGroup));
        errorCheck(system.createChannelGroup("BGM", bgmGroup));
        errorCheck(system.createChannelGroup("KEY", keyGroup));
        errorCheck(system.getMasterChannelGroup(masterChannelGroup));
        
//        errorCheck(system.createDSPByType(FMOD_DSP_TYPE.FMOD_DSP_TYPE_PITCHSHIFT, dsp));
//        errorCheck(bgmGroup.addDSP(dsp, null));
//        dsp.setParameter(FMOD_DSP_PITCHSHIFT.FMOD_DSP_PITCHSHIFT_FFTSIZE.asInt(), 1024);
        
        SoundGroup soundGroup = new SoundGroup();
        errorCheck(system.getMasterSoundGroup(soundGroup));
        errorCheck(soundGroup.setMaxAudible(-1));
        
        System.out.println("Audio engine : FMOD Sound System by Firelight Technologies");
    }
    private void errorCheck(FMOD_RESULT result) throws SoundSystemException {
        if (result != FMOD_RESULT.FMOD_OK) {
            throw new SoundSystemException(FmodEx.FMOD_ErrorString(result));
        }
    }
    
    public void release() {
        system.release();
    }
    
    @Override
    public org.open2jam.sound.Sound load(SampleData data) throws SoundSystemException {

        ByteArrayOutputStream out = new ByteArrayOutputStream(ByteHelper.tmp_buffer.length);
        
        try {
            data.copyTo(out);
        } catch (IOException ex) {
            Logger.getLogger(FmodExSoundSystem.class.getName()).log(Level.SEVERE, "{0}", ex);
            return null;
        }

        ByteBuffer buffer = ByteBuffer.allocateDirect(out.size());
        buffer.put(out.toByteArray());
        buffer.flip();
        
        return new FmodSound(buffer);
        
    }

    @Override
    public void setBGMVolume(float factor) {
        bgmGroup.setVolume(factor);
    }

    @Override
    public void setKeyVolume(float factor) {
        keyGroup.setVolume(factor);
    }

    @Override
    public void setMasterVolume(float factor) {
        masterSoundGroup.setVolume(factor);
    }
    
    @Override
    public void update() {
        system.update();
    }

    @Override
    public void setSpeed(float factor) {
        keyGroup.setPitch(factor);
        bgmGroup.setPitch(factor);
//        dsp.setParameter(FMOD_DSP_PITCHSHIFT.FMOD_DSP_PITCHSHIFT_PITCH.asInt(), 1.0f / factor);
    }
    
    class FmodSound implements org.open2jam.sound.Sound {
    
        private Sound sound;
        
        public FmodSound(ByteBuffer buffer) throws SoundSystemException {
            sound = new Sound();
            FMOD_CREATESOUNDEXINFO exinfo = FMOD_CREATESOUNDEXINFO.allocate();
            exinfo.setLength(buffer.capacity());
            errorCheck(system.createSound(buffer, FMOD_MODE.FMOD_SOFTWARE | FMOD_MODE.FMOD_OPENMEMORY, exinfo, sound));
        }
        
        @Override
        public SoundInstance play(SoundChannel soundChannel, float volume, float pan) throws SoundSystemException {
            Channel channel = new Channel();
            errorCheck(system.playSound(FMOD_CHANNELINDEX.FMOD_CHANNEL_FREE, sound, true, channel));
            errorCheck(channel.setVolume(Math.min(1, volume)));
            errorCheck(channel.setPan(pan));
            errorCheck(channel.setPaused(false));
            errorCheck(channel.setLoopCount(0));
            errorCheck(channel.setChannelGroup(soundChannel == SoundChannel.BGM ? bgmGroup : keyGroup));
            system.update();
            if (channel.isNull()) return null;
            return new FmodSoundInstance(channel);
        }
        
    }
    
    class FmodSoundInstance implements SoundInstance {
        private final Channel channel;

        private FmodSoundInstance(Channel channel) {
            this.channel = channel;
        }

        @Override
        public void stop() {
            channel.stop();
        }
        
    }
    
}