/*
* DecodedVorbisAudioInputStream
*
* JavaZOOM : vorbisspi@javazoom.net
* http://www.javazoom.net
*
* ----------------------------------------------------------------------------
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as published
* by the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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 Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
* ----------------------------------------------------------------------------
*/
package javazoom.spi.vorbis.sampled.convert;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javazoom.spi.PropertiesContainer;
import org.tritonus.share.TDebug;
import org.tritonus.share.sampled.convert.TAsynchronousFilteredAudioInputStream;
import com.jcraft.jogg.Packet;
import com.jcraft.jogg.Page;
import com.jcraft.jogg.StreamState;
import com.jcraft.jogg.SyncState;
import com.jcraft.jorbis.Block;
import com.jcraft.jorbis.Comment;
import com.jcraft.jorbis.DspState;
import com.jcraft.jorbis.Info;
/**
* This class implements the Vorbis decoding.
*/
public class DecodedVorbisAudioInputStream extends TAsynchronousFilteredAudioInputStream implements PropertiesContainer
{
private InputStream oggBitStream_ = null;
private SyncState oggSyncState_ = null;
private StreamState oggStreamState_ = null;
private Page oggPage_ = null;
private Packet oggPacket_ = null;
private Info vorbisInfo = null;
private Comment vorbisComment = null;
private DspState vorbisDspState = null;
private Block vorbisBlock = null;
static final int playState_NeedHeaders = 0;
static final int playState_ReadData = 1;
static final int playState_WriteData = 2;
static final int playState_Done = 3;
static final int playState_BufferFull = 4;
static final int playState_Corrupt = -1;
private int playState;
private int bufferMultiple_ = 4;
private int bufferSize_ = bufferMultiple_ * 256 * 2;
private int convsize = bufferSize_ * 2;
private byte[] convbuffer = new byte[convsize];
private byte[] buffer = null;
private int bytes = 0;
private float[][][] _pcmf = null;
private int[] _index = null;
private int index = 0;
private int i = 0;
// bout is now a global so that we can continue from when we have a buffer full.
int bout = 0;
private HashMap properties = null;
private long currentBytes = 0;
/**
* Constructor.
*/
public DecodedVorbisAudioInputStream(AudioFormat outputFormat, AudioInputStream bitStream)
{
super(outputFormat, -1);
this.oggBitStream_ = bitStream;
init_jorbis();
index = 0;
playState = playState_NeedHeaders;
properties = new HashMap();
}
/**
* Initializes all the jOrbis and jOgg vars that are used for song playback.
*/
private void init_jorbis()
{
oggSyncState_ = new SyncState();
oggStreamState_ = new StreamState();
oggPage_ = new Page();
oggPacket_ = new Packet();
vorbisInfo = new Info();
vorbisComment = new Comment();
vorbisDspState = new DspState();
vorbisBlock = new Block(vorbisDspState);
buffer = null;
bytes = 0;
currentBytes = 0L;
oggSyncState_.init();
}
/**
* Return dynamic properties.
*
* <ul>
* <li><b>ogg.position.byte</b> [Long], current position in bytes in the stream.
*</ul>
*/
public Map properties()
{
properties.put("ogg.position.byte",new Long(currentBytes));
return properties;
}
/**
* Main loop.
*/
public void execute()
{
if(TDebug.TraceAudioConverter)
{
switch(playState)
{
case playState_NeedHeaders:
TDebug.out("playState = playState_NeedHeaders");
break;
case playState_ReadData:
TDebug.out("playState = playState_ReadData");
break;
case playState_WriteData:
TDebug.out("playState = playState_WriteData");
break;
case playState_Done:
TDebug.out("playState = playState_Done");
break;
case playState_BufferFull:
TDebug.out("playState = playState_BufferFull");
break;
case playState_Corrupt:
TDebug.out("playState = playState_Corrupt");
break;
}
}
// This code was developed by the jCraft group, as JOrbisPlayer.java, slightly
// modified by jOggPlayer developer and adapted by JavaZOOM to suit the JavaSound
// SPI. Then further modified by Tom Kimpton to correctly play ogg files that
// would hang the player.
switch(playState)
{
case playState_NeedHeaders:
try
{
// Headers (+ Comments).
readHeaders();
}
catch(IOException ioe)
{
playState = playState_Corrupt;
return;
}
playState = playState_ReadData;
break;
case playState_ReadData:
int result;
index = oggSyncState_.buffer(bufferSize_);
buffer = oggSyncState_.data;
bytes = readFromStream(buffer, index, bufferSize_);
if(TDebug.TraceAudioConverter) TDebug.out("More data : " + bytes);
if(bytes == -1)
{
playState = playState_Done;
if(TDebug.TraceAudioConverter) TDebug.out("Ogg Stream empty. Settings playState to playState_Done.");
break;
}
else
{
oggSyncState_.wrote(bytes);
if(bytes == 0)
{
if((oggPage_.eos() != 0) || (oggStreamState_.e_o_s != 0) || (oggPacket_.e_o_s != 0))
{
if(TDebug.TraceAudioConverter) TDebug.out("oggSyncState wrote 0 bytes: settings playState to playState_Done.");
playState = playState_Done;
}
if(TDebug.TraceAudioConverter) TDebug.out("oggSyncState wrote 0 bytes: but stream not yet empty.");
break;
}
}
result = oggSyncState_.pageout(oggPage_);
if(result == 0)
{
if(TDebug.TraceAudioConverter) TDebug.out("Setting playState to playState_ReadData.");
playState = playState_ReadData;
break;
} // need more data
if(result == -1)
{ // missing or corrupt data at this page position
if(TDebug.TraceAudioConverter) TDebug.out("Corrupt or missing data in bitstream; setting playState to playState_ReadData");
playState = playState_ReadData;
break;
}
oggStreamState_.pagein(oggPage_);
if(TDebug.TraceAudioConverter) TDebug.out("Setting playState to playState_WriteData.");
playState = playState_WriteData;
break;
case playState_WriteData:
// Decoding !
if(TDebug.TraceAudioConverter) TDebug.out("Decoding");
while(true)
{
result = oggStreamState_.packetout(oggPacket_);
if(result == 0)
{
if(TDebug.TraceAudioConverter) TDebug.out("Packetout returned 0, going to read state.");
playState = playState_ReadData;
break;
} // need more data
else if(result == -1)
{
// missing or corrupt data at this page position
// no reason to complain; already complained above
if(TDebug.TraceAudioConverter) TDebug.out("Corrupt or missing data in packetout bitstream; going to read state...");
// playState = playState_ReadData;
// break;
continue;
}
else
{
// we have a packet. Decode it
if(vorbisBlock.synthesis(oggPacket_) == 0)
{ // test for success!
vorbisDspState.synthesis_blockin(vorbisBlock);
}
else
{
//if(TDebug.TraceAudioConverter) TDebug.out("vorbisBlock.synthesis() returned !0, going to read state");
if(TDebug.TraceAudioConverter) TDebug.out("VorbisBlock.synthesis() returned !0, continuing.");
continue;
}
outputSamples();
if(playState == playState_BufferFull)
return;
} // else result != -1
} // while(true)
if(oggPage_.eos() != 0)
{
if(TDebug.TraceAudioConverter) TDebug.out("Settings playState to playState_Done.");
playState = playState_Done;
}
break;
case playState_BufferFull:
continueFromBufferFull();
break;
case playState_Corrupt:
if(TDebug.TraceAudioConverter) TDebug.out("Corrupt Song.");
// drop through to playState_Done...
case playState_Done:
oggStreamState_.clear();
vorbisBlock.clear();
vorbisDspState.clear();
vorbisInfo.clear();
oggSyncState_.clear();
if(TDebug.TraceAudioConverter) TDebug.out("Done Song.");
try
{
if(oggBitStream_ != null)
{
oggBitStream_.close();
}
getCircularBuffer().close();
}
catch(Exception e)
{
if(TDebug.TraceAudioConverter) TDebug.out(e.getMessage());
}
break;
} // switch
}
/**
* This routine was extracted so that when the output buffer fills up,
* we can break out of the loop, let the music channel drain, then
* continue from where we were.
*/
private void outputSamples()
{
int samples;
while((samples = vorbisDspState.synthesis_pcmout(_pcmf, _index)) > 0)
{
float[][] pcmf = _pcmf[0];
bout = (samples < convsize ? samples : convsize);
double fVal = 0.0;
// convert doubles to 16 bit signed ints (host order) and
// interleave
for(i = 0; i < vorbisInfo.channels; i++)
{
int pointer = i * 2;
//int ptr=i;
int mono = _index[i];
for(int j = 0; j < bout; j++)
{
fVal = pcmf[i][mono + j] * 32767.;
int val = (int) (fVal);
if(val > 32767)
{
val = 32767;
}
if(val < -32768)
{
val = -32768;
}
if(val < 0)
{
val = val | 0x8000;
}
convbuffer[pointer] = (byte) (val);
convbuffer[pointer + 1] = (byte) (val >>> 8);
pointer += 2 * (vorbisInfo.channels);
}
}
if(TDebug.TraceAudioConverter) TDebug.out("about to write: " + 2 * vorbisInfo.channels * bout);
if(getCircularBuffer().availableWrite() < 2 * vorbisInfo.channels * bout)
{
if(TDebug.TraceAudioConverter) TDebug.out("Too much data in this data packet, better return, let the channel drain, and try again...");
playState = playState_BufferFull;
return;
}
getCircularBuffer().write(convbuffer, 0, 2 * vorbisInfo.channels * bout);
if(bytes < bufferSize_)
if(TDebug.TraceAudioConverter) TDebug.out("Finished with final buffer of music?");
if(vorbisDspState.synthesis_read(bout) != 0)
{
if(TDebug.TraceAudioConverter) TDebug.out("VorbisDspState.synthesis_read returned -1.");
}
} // while(samples...)
playState = playState_ReadData;
}
private void continueFromBufferFull()
{
if(getCircularBuffer().availableWrite() < 2 * vorbisInfo.channels * bout)
{
if(TDebug.TraceAudioConverter) TDebug.out("Too much data in this data packet, better return, let the channel drain, and try again...");
// Don't change play state.
return;
}
getCircularBuffer().write(convbuffer, 0, 2 * vorbisInfo.channels * bout);
// Don't change play state. Let outputSamples change play state, if necessary.
outputSamples();
}
/**
* Reads headers and comments.
*/
private void readHeaders() throws IOException
{
if(TDebug.TraceAudioConverter) TDebug.out("readHeaders(");
index = oggSyncState_.buffer(bufferSize_);
buffer = oggSyncState_.data;
bytes = readFromStream(buffer, index, bufferSize_);
if(bytes == -1)
{
if(TDebug.TraceAudioConverter) TDebug.out("Cannot get any data from selected Ogg bitstream.");
throw new IOException("Cannot get any data from selected Ogg bitstream.");
}
oggSyncState_.wrote(bytes);
if(oggSyncState_.pageout(oggPage_) != 1)
{
if(bytes < bufferSize_)
{
throw new IOException("EOF");
}
if(TDebug.TraceAudioConverter) TDebug.out("Input does not appear to be an Ogg bitstream.");
throw new IOException("Input does not appear to be an Ogg bitstream.");
}
oggStreamState_.init(oggPage_.serialno());
vorbisInfo.init();
vorbisComment.init();
if(oggStreamState_.pagein(oggPage_) < 0)
{
// error; stream version mismatch perhaps
if(TDebug.TraceAudioConverter) TDebug.out("Error reading first page of Ogg bitstream data.");
throw new IOException("Error reading first page of Ogg bitstream data.");
}
if(oggStreamState_.packetout(oggPacket_) != 1)
{
// no page? must not be vorbis
if(TDebug.TraceAudioConverter) TDebug.out("Error reading initial header packet.");
throw new IOException("Error reading initial header packet.");
}
if(vorbisInfo.synthesis_headerin(vorbisComment, oggPacket_) < 0)
{
// error case; not a vorbis header
if(TDebug.TraceAudioConverter) TDebug.out("This Ogg bitstream does not contain Vorbis audio data.");
throw new IOException("This Ogg bitstream does not contain Vorbis audio data.");
}
//int i = 0;
i = 0;
while(i < 2)
{
while(i < 2)
{
int result = oggSyncState_.pageout(oggPage_);
if(result == 0)
{
break;
} // Need more data
if(result == 1)
{
oggStreamState_.pagein(oggPage_);
while(i < 2)
{
result = oggStreamState_.packetout(oggPacket_);
if(result == 0)
{
break;
}
if(result == -1)
{
if(TDebug.TraceAudioConverter) TDebug.out("Corrupt secondary header. Exiting.");
throw new IOException("Corrupt secondary header. Exiting.");
}
vorbisInfo.synthesis_headerin(vorbisComment, oggPacket_);
i++;
}
}
}
index = oggSyncState_.buffer(bufferSize_);
buffer = oggSyncState_.data;
bytes = readFromStream(buffer, index, bufferSize_);
if(bytes == -1)
{
break;
}
if(bytes == 0 && i < 2)
{
if(TDebug.TraceAudioConverter) TDebug.out("End of file before finding all Vorbis headers!");
throw new IOException("End of file before finding all Vorbis headers!");
}
oggSyncState_.wrote(bytes);
}
byte[][] ptr = vorbisComment.user_comments;
String currComment = "";
for(int j = 0; j < ptr.length; j++)
{
if(ptr[j] == null)
{
break;
}
currComment = (new String(ptr[j], 0, ptr[j].length - 1)).trim();
if(TDebug.TraceAudioConverter) TDebug.out("Comment: " + currComment);
}
convsize = bufferSize_ / vorbisInfo.channels;
vorbisDspState.synthesis_init(vorbisInfo);
vorbisBlock.init(vorbisDspState);
_pcmf = new float[1][][];
_index = new int[vorbisInfo.channels];
}
/**
* Reads from the oggBitStream_ a specified number of Bytes(bufferSize_) worth
* starting at index and puts them in the specified buffer[].
*
* @param buffer
* @param index
* @param bufferSize_
* @return the number of bytes read or -1 if error.
*/
private int readFromStream(byte[] buffer, int index, int bufferSize_)
{
int bytes = 0;
try
{
bytes = oggBitStream_.read(buffer, index, bufferSize_);
}
catch(Exception e)
{
if(TDebug.TraceAudioConverter) TDebug.out("Cannot Read Selected Song");
bytes = -1;
}
currentBytes = currentBytes + bytes;
return bytes;
}
/**
* Close the stream.
*/
public void close() throws IOException
{
super.close();
oggBitStream_.close();
}
}