| 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 | * XMA2 audio parser | ||
| 22 | */ | ||
| 23 | |||
| 24 | #include "parser.h" | ||
| 25 | |||
| 26 | typedef struct XMAParserContext{ | ||
| 27 | int skip_packets; | ||
| 28 | } XMAParserContext; | ||
| 29 | |||
| 30 | ✗ | static int xma_parse(AVCodecParserContext *s1, AVCodecContext *avctx, | |
| 31 | const uint8_t **poutbuf, int *poutbuf_size, | ||
| 32 | const uint8_t *buf, int buf_size) | ||
| 33 | { | ||
| 34 | ✗ | XMAParserContext *s = s1->priv_data; | |
| 35 | |||
| 36 | ✗ | if (buf_size % 2048 == 0) { | |
| 37 | ✗ | int duration = 0, packet, nb_packets = buf_size / 2048; | |
| 38 | |||
| 39 | ✗ | for (packet = 0; packet < nb_packets; packet++) { | |
| 40 | ✗ | if (s->skip_packets == 0) { | |
| 41 | ✗ | duration += buf[packet * 2048] * 128; | |
| 42 | ✗ | s->skip_packets = buf[packet * 2048 + 3] + 1; | |
| 43 | } | ||
| 44 | ✗ | s->skip_packets--; | |
| 45 | } | ||
| 46 | |||
| 47 | ✗ | s1->duration = duration; | |
| 48 | ✗ | s1->key_frame = !!duration; | |
| 49 | } | ||
| 50 | |||
| 51 | /* always return the full packet. this parser isn't doing any splitting or | ||
| 52 | combining, only packet analysis */ | ||
| 53 | ✗ | *poutbuf = buf; | |
| 54 | ✗ | *poutbuf_size = buf_size; | |
| 55 | ✗ | return buf_size; | |
| 56 | } | ||
| 57 | |||
| 58 | const AVCodecParser ff_xma_parser = { | ||
| 59 | .codec_ids = { AV_CODEC_ID_XMA2 }, | ||
| 60 | .priv_data_size = sizeof(XMAParserContext), | ||
| 61 | .parser_parse = xma_parse, | ||
| 62 | }; | ||
| 63 |