/*
TODO: decode more than 1024 samples at a time and mix both the mp4 and aac on stream r
*/
mm_word mp4_on_stream_request( mm_word length, mm_addr dest, mm_stream_formats format ) {
int decoded = 0;
int ret = 0;
/* We'll always output 1024 (nah almost) samples */
if(length >=1024) {
readOff = readBuffer;
int read = 0;
/* The decoder is always fed one aac frame */
if(trackSample < samples) {
read = mp4ff_read_sample_v2(infile, track, trackSample++,readOff);
dataLeft+=read;
memset(readBuffer+dataLeft, 0, AAC_MAINBUF_SIZE - dataLeft);
ret = AACDecode(decoder, &readOff, &dataLeft, dest);
if(trackSample == samples && !Endof)
Endof = MM_BUFFER_SIZE;
decoded += 1024; // 1024 a channel
}
/* Either a sample read error occured , an decoding error occured or simply EOF */
if((!read && !Endof) || ret || (length >= Endof && Endof)) {
mp4ff_close(infile);
needsClosing = true;
return 0;
}
}
visualizeBuffer(dest);
return decoded;
}
ReadStatus MP4Reader::process(Packet*p) {
packet=p;
packet->stream_position=-1;
packet->stream_length=stream_length;
packet->flags=AAC_FLAG_FRAME;
if (!(flags&FLAG_PARSED)) {
return parse();
}
packet->stream_position = mp4ff_get_sample_position(handle,track,frame);
for (;frame<nframes;frame++) {
FXint size = mp4ff_read_sample_getsize(handle,track,frame);
if (size<=0) {
packet->unref();
return ReadError;
}
if (packet->space()<size) {
if (packet->size()) {
engine->decoder->post(packet);
packet=NULL;
}
return ReadOk;
}
FXint n = mp4ff_read_sample_v2(handle,track,frame,packet->ptr());
if (n<=0) {
packet->unref();
return ReadError;
}
packet->wroteBytes(size);
if (frame==nframes-1)
packet->flags|=FLAG_EOS;
}
if (packet->size()) {
engine->decoder->post(packet);
packet=NULL;
return ReadDone;
}
return ReadOk;
}
