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");
}
}
}
/*
* 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();
}