d46fdad81b3091fbebd965b4a385a2244d3406fa
[libav.git] / libavcodec / bitstream_filters.c
1 /*
2 * This file is part of Libav.
3 *
4 * Libav 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 * Libav 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 Libav; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 #include "config.h"
20
21 #include "libavutil/common.h"
22 #include "libavutil/log.h"
23
24 #include "avcodec.h"
25 #include "bsf.h"
26
27 extern const AVBitStreamFilter ff_aac_adtstoasc_bsf;
28 extern const AVBitStreamFilter ff_chomp_bsf;
29 extern const AVBitStreamFilter ff_dump_extradata_bsf;
30 extern const AVBitStreamFilter ff_extract_extradata_bsf;
31 extern const AVBitStreamFilter ff_h264_mp4toannexb_bsf;
32 extern const AVBitStreamFilter ff_hevc_mp4toannexb_bsf;
33 extern const AVBitStreamFilter ff_imx_dump_header_bsf;
34 extern const AVBitStreamFilter ff_mjpeg2jpeg_bsf;
35 extern const AVBitStreamFilter ff_mjpega_dump_header_bsf;
36 extern const AVBitStreamFilter ff_mov2textsub_bsf;
37 extern const AVBitStreamFilter ff_null_bsf;
38 extern const AVBitStreamFilter ff_text2movsub_bsf;
39 extern const AVBitStreamFilter ff_noise_bsf;
40 extern const AVBitStreamFilter ff_remove_extradata_bsf;
41 extern const AVBitStreamFilter ff_vp9_superframe_bsf;
42 extern const AVBitStreamFilter ff_vp9_superframe_split_bsf;
43
44 #include "libavcodec/bsf_list.c"
45
46 const AVBitStreamFilter *av_bsf_next(void **opaque)
47 {
48 uintptr_t i = (uintptr_t)*opaque;
49 const AVBitStreamFilter *f = bitstream_filters[i];
50
51 if (f)
52 *opaque = (void*)(i + 1);
53
54 return f;
55 }
56
57 const AVBitStreamFilter *av_bsf_get_by_name(const char *name)
58 {
59 int i;
60
61 for (i = 0; bitstream_filters[i]; i++) {
62 const AVBitStreamFilter *f = bitstream_filters[i];
63 if (!strcmp(f->name, name))
64 return f;
65 }
66
67 return NULL;
68 }
69
70 const AVClass *ff_bsf_child_class_next(const AVClass *prev)
71 {
72 int i;
73
74 /* find the filter that corresponds to prev */
75 for (i = 0; prev && bitstream_filters[i]; i++) {
76 if (bitstream_filters[i]->priv_class == prev) {
77 i++;
78 break;
79 }
80 }
81
82 /* find next filter with priv options */
83 for (; bitstream_filters[i]; i++)
84 if (bitstream_filters[i]->priv_class)
85 return bitstream_filters[i]->priv_class;
86 return NULL;
87 }