| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * Copyright (c) 2012 Justin Ruggles <justin.ruggles@gmail.com> | ||
| 3 | * | ||
| 4 | * This file is part of FFmpeg. | ||
| 5 | * | ||
| 6 | * FFmpeg is free software; you can redistribute it and/or | ||
| 7 | * modify it under the terms of the GNU Lesser General Public | ||
| 8 | * License as published by the Free Software Foundation; either | ||
| 9 | * version 2.1 of the License, or (at your option) any later version. | ||
| 10 | * | ||
| 11 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 14 | * Lesser General Public License for more details. | ||
| 15 | * | ||
| 16 | * You should have received a copy of the GNU Lesser General Public | ||
| 17 | * License along with FFmpeg; if not, write to the Free Software | ||
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 19 | */ | ||
| 20 | |||
| 21 | /** | ||
| 22 | * @file | ||
| 23 | * Cook audio parser | ||
| 24 | * | ||
| 25 | * Determines subpacket duration from extradata. | ||
| 26 | */ | ||
| 27 | |||
| 28 | #include <stdint.h> | ||
| 29 | |||
| 30 | #include "libavutil/intreadwrite.h" | ||
| 31 | #include "parser.h" | ||
| 32 | |||
| 33 | typedef struct CookParseContext { | ||
| 34 | int duration; | ||
| 35 | } CookParseContext; | ||
| 36 | |||
| 37 | 503 | static int cook_parse(AVCodecParserContext *s1, AVCodecContext *avctx, | |
| 38 | const uint8_t **poutbuf, int *poutbuf_size, | ||
| 39 | const uint8_t *buf, int buf_size) | ||
| 40 | { | ||
| 41 | 503 | CookParseContext *s = s1->priv_data; | |
| 42 | |||
| 43 |
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503 | if (!s->duration && |
| 44 |
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5 | avctx->extradata && avctx->extradata_size >= 8 && avctx->ch_layout.nb_channels) |
| 45 | 5 | s->duration = AV_RB16(avctx->extradata + 4) / avctx->ch_layout.nb_channels; | |
| 46 | |||
| 47 | 503 | s1->duration = s->duration; | |
| 48 | |||
| 49 | /* always return the full packet. this parser isn't doing any splitting or | ||
| 50 | combining, only setting packet duration */ | ||
| 51 | 503 | *poutbuf = buf; | |
| 52 | 503 | *poutbuf_size = buf_size; | |
| 53 | 503 | return buf_size; | |
| 54 | } | ||
| 55 | |||
| 56 | const AVCodecParser ff_cook_parser = { | ||
| 57 | .codec_ids = { AV_CODEC_ID_COOK }, | ||
| 58 | .priv_data_size = sizeof(CookParseContext), | ||
| 59 | .parser_parse = cook_parse, | ||
| 60 | }; | ||
| 61 |