useful helper to get mpeg audio stream infos. Return -1 if error in header, otherwise the coded frame size in bytes */
| 42 | /* useful helper to get mpeg audio stream infos. Return -1 if error in |
| 43 | header, otherwise the coded frame size in bytes */ |
| 44 | int ff_mpa_decode_header(AVCodecContext *avctx, uint32_t head, int *sample_rate, int *channels, int *frame_size, int *bit_rate) |
| 45 | { |
| 46 | MPADecodeHeader s1, *s = &s1; |
| 47 | |
| 48 | if (ff_mpa_check_header(head) != 0) |
| 49 | return -1; |
| 50 | |
| 51 | if (ff_mpegaudio_decode_header(s, head) != 0) { |
| 52 | return -1; |
| 53 | } |
| 54 | |
| 55 | switch(s->layer) { |
| 56 | case 1: |
| 57 | avctx->codec_id = CODEC_ID_MP1; |
| 58 | *frame_size = 384; |
| 59 | break; |
| 60 | case 2: |
| 61 | avctx->codec_id = CODEC_ID_MP2; |
| 62 | *frame_size = 1152; |
| 63 | break; |
| 64 | default: |
| 65 | case 3: |
| 66 | avctx->codec_id = CODEC_ID_MP3; |
| 67 | if (s->lsf) |
| 68 | *frame_size = 576; |
| 69 | else |
| 70 | *frame_size = 1152; |
| 71 | break; |
| 72 | } |
| 73 | |
| 74 | *sample_rate = s->sample_rate; |
| 75 | *channels = s->nb_channels; |
| 76 | *bit_rate = s->bit_rate; |
| 77 | avctx->sub_id = s->layer; |
| 78 | return s->frame_size; |
| 79 | } |
| 80 | |
| 81 | static int mpegaudio_parse(AVCodecParserContext *s1, |
| 82 | AVCodecContext *avctx, |
no test coverage detected