| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * This file is part of FFmpeg. | ||
| 3 | * | ||
| 4 | * FFmpeg is free software; you can redistribute it and/or | ||
| 5 | * modify it under the terms of the GNU Lesser General Public | ||
| 6 | * License as published by the Free Software Foundation; either | ||
| 7 | * version 2.1 of the License, or (at your option) any later version. | ||
| 8 | * | ||
| 9 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 12 | * Lesser General Public License for more details. | ||
| 13 | * | ||
| 14 | * You should have received a copy of the GNU Lesser General Public | ||
| 15 | * License along with FFmpeg; if not, write to the Free Software | ||
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 17 | */ | ||
| 18 | |||
| 19 | /** | ||
| 20 | * @file | ||
| 21 | * Sipr audio parser | ||
| 22 | */ | ||
| 23 | |||
| 24 | #include "parser.h" | ||
| 25 | |||
| 26 | typedef struct SiprParserContext{ | ||
| 27 | ParseContext pc; | ||
| 28 | } SiprParserContext; | ||
| 29 | |||
| 30 | 6712 | static int sipr_split(AVCodecContext *avctx, const uint8_t *buf, int buf_size) | |
| 31 | { | ||
| 32 | int next; | ||
| 33 | |||
| 34 |
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6712 | switch (avctx->block_align) { |
| 35 | 6712 | case 20: | |
| 36 | case 19: | ||
| 37 | case 29: | ||
| 38 | 6712 | case 37: next = avctx->block_align; break; | |
| 39 | ✗ | default: | |
| 40 | ✗ | if (avctx->bit_rate > 12200) next = 20; | |
| 41 | ✗ | else if (avctx->bit_rate > 7500 ) next = 19; | |
| 42 | ✗ | else if (avctx->bit_rate > 5750 ) next = 29; | |
| 43 | ✗ | else next = 37; | |
| 44 | } | ||
| 45 | |||
| 46 | 6712 | return FFMIN(next, buf_size); | |
| 47 | } | ||
| 48 | |||
| 49 | 6712 | static int sipr_parse(AVCodecParserContext *s1, AVCodecContext *avctx, | |
| 50 | const uint8_t **poutbuf, int *poutbuf_size, | ||
| 51 | const uint8_t *buf, int buf_size) | ||
| 52 | { | ||
| 53 | 6712 | SiprParserContext *s = s1->priv_data; | |
| 54 | 6712 | ParseContext *pc = &s->pc; | |
| 55 | int next; | ||
| 56 | |||
| 57 | 6712 | next = sipr_split(avctx, buf, buf_size); | |
| 58 |
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6712 | if (ff_combine_frame(pc, next, &buf, &buf_size) < 0) { |
| 59 | ✗ | *poutbuf = NULL; | |
| 60 | ✗ | *poutbuf_size = 0; | |
| 61 | ✗ | return buf_size; | |
| 62 | } | ||
| 63 | |||
| 64 | 6712 | *poutbuf = buf; | |
| 65 | 6712 | *poutbuf_size = buf_size; | |
| 66 | 6712 | return next; | |
| 67 | } | ||
| 68 | |||
| 69 | const AVCodecParser ff_sipr_parser = { | ||
| 70 | .codec_ids = { AV_CODEC_ID_SIPR }, | ||
| 71 | .priv_data_size = sizeof(SiprParserContext), | ||
| 72 | .parser_parse = sipr_parse, | ||
| 73 | .parser_close = ff_parse_close, | ||
| 74 | }; | ||
| 75 |