repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> | |
| 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 | #include <string.h> | |
| 22 | ||
| 23 | #include "avcodec.h" | |
| 24 | #include "libavutil/atomic.h" | |
| 25 | #include "libavutil/mem.h" | |
| 26 | ||
| 27 | static AVBitStreamFilter *first_bitstream_filter = NULL; | |
| 28 | ||
| 29 | AVBitStreamFilter *av_bitstream_filter_next(const AVBitStreamFilter *f) | |
| 30 | { | |
| 31 | if (f) | |
| 32 | return f->next; | |
| 33 | else | |
| 34 | return first_bitstream_filter; | |
| 35 | } | |
| 36 | ||
| 37 | void av_register_bitstream_filter(AVBitStreamFilter *bsf) | |
| 38 | { | |
| 39 | do { | |
| 40 | bsf->next = first_bitstream_filter; | |
| 41 | } while(bsf->next != avpriv_atomic_ptr_cas((void * volatile *)&first_bitstream_filter, bsf->next, bsf)); | |
| 42 | } | |
| 43 | ||
| 44 | AVBitStreamFilterContext *av_bitstream_filter_init(const char *name) | |
| 45 | { | |
| f6fa7814 | 46 | AVBitStreamFilter *bsf = NULL; |
| 2ba45a60 | 47 | |
| f6fa7814 | 48 | while (bsf = av_bitstream_filter_next(bsf)) { |
| 2ba45a60 DM |
49 | if (!strcmp(name, bsf->name)) { |
| 50 | AVBitStreamFilterContext *bsfc = | |
| 51 | av_mallocz(sizeof(AVBitStreamFilterContext)); | |
| 52 | bsfc->filter = bsf; | |
| 53 | bsfc->priv_data = | |
| 54 | bsf->priv_data_size ? av_mallocz(bsf->priv_data_size) : NULL; | |
| 55 | return bsfc; | |
| 56 | } | |
| 2ba45a60 DM |
57 | } |
| 58 | return NULL; | |
| 59 | } | |
| 60 | ||
| 61 | void av_bitstream_filter_close(AVBitStreamFilterContext *bsfc) | |
| 62 | { | |
| 63 | if (!bsfc) | |
| 64 | return; | |
| 65 | if (bsfc->filter->close) | |
| 66 | bsfc->filter->close(bsfc); | |
| 67 | av_freep(&bsfc->priv_data); | |
| 68 | av_parser_close(bsfc->parser); | |
| 69 | av_free(bsfc); | |
| 70 | } | |
| 71 | ||
| 72 | int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc, | |
| 73 | AVCodecContext *avctx, const char *args, | |
| 74 | uint8_t **poutbuf, int *poutbuf_size, | |
| 75 | const uint8_t *buf, int buf_size, int keyframe) | |
| 76 | { | |
| 77 | *poutbuf = (uint8_t *)buf; | |
| 78 | *poutbuf_size = buf_size; | |
| 79 | return bsfc->filter->filter(bsfc, avctx, args, poutbuf, poutbuf_size, | |
| 80 | buf, buf_size, keyframe); | |
| 81 | } |