/**
* Open callbacks.
*
* @param is input stream
* @param initial initial bytes
* @param ibytes initial count
* @return success flag
* @throws JOrbisException if an error occurs
*/
int openCallbacks(InputStream is, byte[] initial, int ibytes) throws JOrbisException {
int ret;
datasource = is;
oy.init();
// perhaps some data was previously read into a buffer for testing
// against other stream types. Allow initialization from this
// previously read data (as we may be reading from a non-seekable
// stream)
if (initial != null) {
int index = oy.buffer(ibytes);
System.arraycopy(initial, 0, oy.data, index, ibytes);
oy.wrote(ibytes);
}
// can we seek? Stevens suggests the seek test was portable
if (is instanceof SeekableInputStream) {
ret = openSeekable();
} else {
ret = openNonseekable();
}
if (ret != 0) {
datasource = null;
clear();
}
return ret;
}
/**
* Get the data.
*
* @return the number of bytes read
*/
private int getData() {
int index = oy.buffer(CHUNKSIZE);
byte[] buffer = oy.data;
int bytes = 0;
try {
bytes = datasource.read(buffer, index, CHUNKSIZE);
} catch (Exception e) {
return OV_EREAD;
}
oy.wrote(bytes);
if (bytes == -1) {
bytes = 0;
}
return bytes;
}
private void pageOut() throws IOException {
if (oggPage == null) {
oggPage = new Page();
}
for (; ; ) {
switch (oggSyncState.pageout(oggPage)) {
case 0:
return;
case 1:
if (oggStreamState == null) {
oggStreamState = new StreamState();
oggStreamState.init(oggPage.serialno());
oggStreamState.reset();
}
if (oggStreamState.pagein(oggPage) < 0) {
throw new IOException("error reading ogg page");
} else {
packetOut();
if (oggPage.eos() != 0) {
throw new EOFException();
}
}
break;
default:
throw new IOException("ogg input format error");
}
}
}
/**
* Get next page.
*
* @param page the page
* @param boundary the boundary
* @return the offset or error code OV_*
*/
private int getNextPage(Page page, long boundary) {
if (boundary > 0) {
boundary += offset;
}
while (true) {
int more;
if (boundary > 0 && offset >= boundary) {
return OV_FALSE;
}
more = oy.pageseek(page);
if (more < 0) {
offset -= more;
} else {
if (more == 0) {
if (boundary == 0) {
return OV_FALSE;
}
int ret = getData();
if (ret == 0) {
return OV_EOF;
}
if (ret < 0) {
return OV_EREAD;
}
} else {
int ret = (int) offset; // !!!
offset += more;
return ret;
}
}
}
}
/** 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;
oggSyncState_.init();
}
/*
* Taken from the JOrbis Player
*/
private void initJOrbis() {
oy = new SyncState();
os = new StreamState();
og = new Page();
op = new Packet();
vi = new Info();
vc = new Comment();
vd = new DspState();
vb = new Block(vd);
buffer = null;
bytes = 0;
oy.init();
}
/**
* The helpers are over; it's all toplevel interface from here on out clear out the OggVorbis_File
* struct.
*/
void clear() {
vb.clear();
vd.clear();
os.clear();
if (vi != null && links != 0) {
for (int i = 0; i < links; i++) {
vi[i].clear();
vc[i].clear();
}
vi = null;
vc = null;
}
dataoffsets = null;
pcmlengths = null;
serialnos = null;
offsets = null;
oy.clear();
}
public void run() {
if (Thread.currentThread() != this) {
throw new IllegalStateException("not this thread");
}
try {
SyncState syncState = this.oggSyncState = new SyncState();
while (in != null) {
int off = syncState.buffer(BUFFER_SIZE);
int n = in.read(syncState.data, off, BUFFER_SIZE);
if (n > 0) {
syncState.wrote(n);
pageOut();
} else {
break;
}
}
} catch (EOFException e) {
} catch (IOException e) {
failure = e;
e.printStackTrace();
} finally {
try {
if (in != null) {
in.close();
in = null;
}
} catch (IOException e) {
if (failure != null) {
failure = e;
}
e.printStackTrace();
}
if (out != null) {
out.stop();
out.close();
}
if (vorbisBlock != null) {
vorbisBlock.clear();
vorbisBlock = null;
}
if (vorbisDspState != null) {
vorbisDspState.clear();
vorbisDspState = null;
}
if (vorbisInfo != null) {
vorbisInfo.clear();
vorbisInfo = null;
}
if (oggStreamState != null) {
oggStreamState.clear();
oggStreamState = null;
}
if (oggSyncState != null) {
oggSyncState.clear();
oggSyncState = null;
}
synchronized (this) {
notifyAll();
}
}
}
/*
* Taken from the JOrbis Player
*/
private void playStream(Thread me) throws InternalException {
boolean chained = false;
initJOrbis();
while (true) {
if (checkState()) {
return;
}
int eos = 0;
int index = oy.buffer(BUFSIZE);
buffer = oy.data;
try {
bytes = bitStream.read(buffer, index, BUFSIZE);
} catch (Exception e) {
throw new InternalException(e);
}
oy.wrote(bytes);
if (chained) {
chained = false;
} else {
if (oy.pageout(og) != 1) {
if (bytes < BUFSIZE) break;
throw new InternalException("Input does not appear to be an Ogg bitstream.");
}
}
os.init(og.serialno());
os.reset();
vi.init();
vc.init();
if (os.pagein(og) < 0) {
// error; stream version mismatch perhaps
throw new InternalException("Error reading first page of Ogg bitstream data.");
}
if (os.packetout(op) != 1) {
// no page? must not be vorbis
throw new InternalException("Error reading initial header packet.");
}
if (vi.synthesis_headerin(vc, op) < 0) {
// error case; not a vorbis header
throw new InternalException("This Ogg bitstream does not contain Vorbis audio data.");
}
int i = 0;
while (i < 2) {
while (i < 2) {
if (checkState()) {
return;
}
int result = oy.pageout(og);
if (result == 0) break; // Need more data
if (result == 1) {
os.pagein(og);
while (i < 2) {
result = os.packetout(op);
if (result == 0) break;
if (result == -1) {
throw new InternalException("Corrupt secondary header. Exiting.");
}
vi.synthesis_headerin(vc, op);
i++;
}
}
}
index = oy.buffer(BUFSIZE);
buffer = oy.data;
try {
bytes = bitStream.read(buffer, index, BUFSIZE);
} catch (Exception e) {
throw new InternalException(e);
}
if (bytes == 0 && i < 2) {
throw new InternalException("End of file before finding all Vorbis headers!");
}
oy.wrote(bytes);
}
convsize = BUFSIZE / vi.channels;
vd.synthesis_init(vi);
vb.init(vd);
float[][][] _pcmf = new float[1][][];
int[] _index = new int[vi.channels];
getOutputLine(vi.channels, vi.rate);
while (eos == 0) {
while (eos == 0) {
if (player != me) {
return;
}
int result = oy.pageout(og);
if (result == 0) break; // need more data
if (result == -1) { // missing or corrupt data at this page
// position
// System.err.println("Corrupt or missing data in
// bitstream;
// continuing...");
} else {
os.pagein(og);
if (og.granulepos() == 0) { //
chained = true; //
eos = 1; //
break; //
} //
while (true) {
if (checkState()) {
return;
}
result = os.packetout(op);
if (result == 0) break; // need more data
if (result == -1) { // missing or corrupt data at
// this page position
// no reason to complain; already complained
// above
// System.err.println("no reason to complain;
// already complained above");
} else {
// we have a packet. Decode it
int samples;
if (vb.synthesis(op) == 0) { // test for
// success!
vd.synthesis_blockin(vb);
}
while ((samples = vd.synthesis_pcmout(_pcmf, _index)) > 0) {
if (checkState()) {
return;
}
float[][] pcmf = _pcmf[0];
int bout = (samples < convsize ? samples : convsize);
// convert doubles to 16 bit signed ints
// (host order) and
// interleave
for (i = 0; i < vi.channels; i++) {
int ptr = i * 2;
// int ptr=i;
int mono = _index[i];
for (int j = 0; j < bout; j++) {
int val = (int) (pcmf[i][mono + j] * 32767.);
if (val > 32767) {
val = 32767;
}
if (val < -32768) {
val = -32768;
}
if (val < 0) val = val | 0x8000;
convbuffer[ptr] = (byte) (val);
convbuffer[ptr + 1] = (byte) (val >>> 8);
ptr += 2 * (vi.channels);
}
}
outputLine.write(convbuffer, 0, 2 * vi.channels * bout);
vd.synthesis_read(bout);
}
}
}
if (og.eos() != 0) eos = 1;
}
}
if (eos == 0) {
index = oy.buffer(BUFSIZE);
buffer = oy.data;
try {
bytes = bitStream.read(buffer, index, BUFSIZE);
} catch (Exception e) {
throw new InternalException(e);
}
if (bytes == -1) {
break;
}
oy.wrote(bytes);
if (bytes == 0) eos = 1;
}
}
os.clear();
vb.clear();
vd.clear();
vi.clear();
}
oy.clear();
}
/** Reads headers and comments. */
private void readHeaders(HashMap aff_properties, HashMap af_properties) 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();
aff_properties.put("ogg.serial", new Integer(oggPage_.serialno()));
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;
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);
}
// Read Ogg Vorbis comments.
byte[][] ptr = vorbisComment.user_comments;
String currComment = "";
int c = 0;
for (int j = 0; j < ptr.length; j++) {
if (ptr[j] == null) {
break;
}
currComment = (new String(ptr[j], 0, ptr[j].length - 1, "UTF-8")).trim();
if (TDebug.TraceAudioConverter) TDebug.out(currComment);
if (currComment.toLowerCase().startsWith("artist")) {
aff_properties.put("author", currComment.substring(7));
} else if (currComment.toLowerCase().startsWith("title")) {
aff_properties.put("title", currComment.substring(6));
} else if (currComment.toLowerCase().startsWith("album")) {
aff_properties.put("album", currComment.substring(6));
} else if (currComment.toLowerCase().startsWith("date")) {
aff_properties.put("date", currComment.substring(5));
} else if (currComment.toLowerCase().startsWith("copyright")) {
aff_properties.put("copyright", currComment.substring(10));
} else if (currComment.toLowerCase().startsWith("comment")) {
aff_properties.put("comment", currComment.substring(8));
} else if (currComment.toLowerCase().startsWith("genre")) {
aff_properties.put("ogg.comment.genre", currComment.substring(6));
} else if (currComment.toLowerCase().startsWith("tracknumber")) {
aff_properties.put("ogg.comment.track", currComment.substring(12));
} else {
c++;
aff_properties.put("ogg.comment.ext." + c, currComment);
}
aff_properties.put(
"ogg.comment.encodedby",
new String(vorbisComment.vendor, 0, vorbisComment.vendor.length - 1));
}
}
/**
* Seek helper function.
*
* @param offst the offset to seek
*/
private void seekHelper(long offst) {
fseek(datasource, offst, SEEK_SET);
this.offset = offst;
oy.reset();
}
