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