ReadChunk
virtual status_t ReadChunk(int32 * outType,
virtual status_t ReadChunk(BTrack * track,
virtual status_t ReadChunk(char ** outBuffer, int32 * ioSize,
return BExtractor::ReadChunk(this,outBuffer,ioSize,outHeader);
status_t ReadChunk(char** _buffer, int32* _size,
void ReadChunk();
ReadChunk();
status_t result = track->ReadChunk((char**)chunkData,(int32*)chunkLen,mh);