Lines Matching refs:header
2 * MPEG Audio header decoder
24 * MPEG Audio header decoder.
34 int ff_mpegaudio_decode_header(MPADecodeHeader *s, uint32_t header)
38 if (header & (1<<20)) {
39 s->lsf = (header & (1<<19)) ? 0 : 1;
46 s->layer = 4 - ((header >> 17) & 3);
48 sample_rate_index = (header >> 10) & 3;
52 s->error_protection = ((header >> 16) & 1) ^ 1;
55 bitrate_index = (header >> 12) & 0xf;
56 padding = (header >> 9) & 1;
57 //extension = (header >> 8) & 1;
58 s->mode = (header >> 6) & 3;
59 s->mode_ext = (header >> 4) & 3;
60 //copyright = (header >> 3) & 1;
61 //original = (header >> 2) & 1;
62 //emphasis = header & 3;