public void decodeDsp(Packet packet) {
if (block.synthesis(packet) == 0) {
dsp.synthesis_blockin(block);
}
int samplesAvail;
int channels = info.channels;
while ((samplesAvail = dsp.synthesis_pcmout(pcmAll, index)) > 0) {
float[][] pcm = pcmAll[0];
int samplesCanRead = UNCOMP_BUFSIZE / (channels * 2);
int samplesToRead = (samplesAvail < samplesCanRead ? samplesAvail : samplesCanRead);
// convert floats to 16 bit signed ints and interleave
for (int i = 0; i < channels; i++) {
// each sample is two bytes, the sample for the 2nd
// channel is at index 2, etc.
int writeOff = i * 2;
int readOff = index[i];
for (int j = 0; j < samplesToRead; j++) {
int val = (int) (pcm[i][readOff + j] * 32767.0);
// guard against clipping
if (val > 32767) {
val = 32767;
}
if (val < -32768) {
val = -32768;
}
uncompBuf[writeOff] = (byte) (val);
uncompBuf[writeOff + 1] = (byte) (val >> 8);
writeOff += 2 * channels; // each sample is 2 bytes
}
}
ringBuffer.write(uncompBuf, 0, samplesToRead * channels * 2);
// tell vorbis how many samples were actualy consumed
dsp.synthesis_read(samplesToRead);
}
}
