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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* |
| 2 | * copyright (c) 2006 Michael Niedermayer |
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| 3 | * |
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| 4 | * This file is part of FFmpeg. |
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| 5 | * |
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| 6 | * FFmpeg is free software; you can redistribute it and/or |
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| 7 | * modify it under the terms of the GNU Lesser General Public |
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| 8 | * License as published by the Free Software Foundation; either |
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| 9 | * version 2.1 of the License, or (at your option) any later version. |
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| 10 | * |
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| 11 | * FFmpeg is distributed in the hope that it will be useful, |
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 14 | * Lesser General Public License for more details. |
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| 15 | * |
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| 16 | * You should have received a copy of the GNU Lesser General Public |
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| 17 | * License along with FFmpeg; if not, write to the Free Software |
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| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 19 | */ |
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| 20 | |||
| 21 | #include |
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| 22 | |||
| 23 | #include "avcodec.h" |
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| 24 | #include "libavutil/atomic.h" |
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| 25 | #include "libavutil/mem.h" |
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| 26 | |||
| 27 | static AVBitStreamFilter *first_bitstream_filter = NULL; |
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| 28 | |||
| 29 | AVBitStreamFilter *av_bitstream_filter_next(AVBitStreamFilter *f) |
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| 30 | { |
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| 31 | if (f) |
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| 32 | return f->next; |
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| 33 | else |
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| 34 | return first_bitstream_filter; |
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| 35 | } |
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| 36 | |||
| 37 | void av_register_bitstream_filter(AVBitStreamFilter *bsf) |
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| 38 | { |
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| 39 | do { |
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| 40 | bsf->next = first_bitstream_filter; |
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| 41 | } while(bsf->next != avpriv_atomic_ptr_cas((void * volatile *)&first_bitstream_filter, bsf->next, bsf)); |
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| 42 | } |
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| 43 | |||
| 44 | AVBitStreamFilterContext *av_bitstream_filter_init(const char *name) |
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| 45 | { |
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| 46 | AVBitStreamFilter *bsf = first_bitstream_filter; |
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| 47 | |||
| 48 | while (bsf) { |
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| 49 | if (!strcmp(name, bsf->name)) { |
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| 50 | AVBitStreamFilterContext *bsfc = |
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| 51 | av_mallocz(sizeof(AVBitStreamFilterContext)); |
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| 52 | bsfc->filter = bsf; |
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| 53 | bsfc->priv_data = |
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| 54 | bsf->priv_data_size ? av_mallocz(bsf->priv_data_size) : NULL; |
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| 55 | return bsfc; |
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| 56 | } |
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| 57 | bsf = bsf->next; |
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| 58 | } |
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| 59 | return NULL; |
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| 60 | } |
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| 61 | |||
| 62 | void av_bitstream_filter_close(AVBitStreamFilterContext *bsfc) |
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| 63 | { |
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| 64 | if (!bsfc) |
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| 65 | return; |
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| 66 | if (bsfc->filter->close) |
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| 67 | bsfc->filter->close(bsfc); |
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| 68 | av_freep(&bsfc->priv_data); |
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| 69 | av_parser_close(bsfc->parser); |
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| 70 | av_free(bsfc); |
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| 71 | } |
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| 72 | |||
| 73 | int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc, |
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| 74 | AVCodecContext *avctx, const char *args, |
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| 75 | uint8_t **poutbuf, int *poutbuf_size, |
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| 76 | const uint8_t *buf, int buf_size, int keyframe) |
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| 77 | { |
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| 78 | *poutbuf = (uint8_t *)buf; |
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| 79 | *poutbuf_size = buf_size; |
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| 80 | return bsfc->filter->filter(bsfc, avctx, args, poutbuf, poutbuf_size, |
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| 81 | buf, buf_size, keyframe); |
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| 82 | } |