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bitstream_filters.c
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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 #include "config.h"
20 
21 #include "libavutil/common.h"
22 #include "libavutil/log.h"
23 
24 #include "avcodec.h"
25 #include "bsf.h"
26 
28 extern const AVBitStreamFilter ff_chomp_bsf;
40 extern const AVBitStreamFilter ff_noise_bsf;
44 
45 #include "libavcodec/bsf_list.c"
46 
47 const AVBitStreamFilter *av_bsf_next(void **opaque)
48 {
49  uintptr_t i = (uintptr_t)*opaque;
50  const AVBitStreamFilter *f = bitstream_filters[i];
51 
52  if (f)
53  *opaque = (void*)(i + 1);
54 
55  return f;
56 }
57 
59 {
60  int i;
61 
62  for (i = 0; bitstream_filters[i]; i++) {
63  const AVBitStreamFilter *f = bitstream_filters[i];
64  if (!strcmp(f->name, name))
65  return f;
66  }
67 
68  return NULL;
69 }
70 
72 {
73  int i;
74 
75  /* find the filter that corresponds to prev */
76  for (i = 0; prev && bitstream_filters[i]; i++) {
77  if (bitstream_filters[i]->priv_class == prev) {
78  i++;
79  break;
80  }
81  }
82 
83  /* find next filter with priv options */
84  for (; bitstream_filters[i]; i++)
85  if (bitstream_filters[i]->priv_class)
86  return bitstream_filters[i]->priv_class;
87  return NULL;
88 }
#define NULL
Definition: coverity.c:32
const AVBitStreamFilter * av_bsf_get_by_name(const char *name)
const AVBitStreamFilter ff_mjpega_dump_header_bsf
const char * name
Definition: avcodec.h:5880
const AVBitStreamFilter ff_h264_mp4toannexb_bsf
const AVBitStreamFilter * av_bsf_next(void **opaque)
Iterate over all registered bitstream filters.
const AVBitStreamFilter ff_vp9_superframe_bsf
const AVClass * ff_bsf_child_class_next(const AVClass *prev)
const AVBitStreamFilter ff_remove_extradata_bsf
const AVBitStreamFilter ff_text2movsub_bsf
Definition: movsub_bsf.c:60
const AVBitStreamFilter ff_hevc_mp4toannexb_bsf
Libavcodec external API header.
Describe the class of an AVClass context structure.
Definition: log.h:67
const AVBitStreamFilter ff_mov2textsub_bsf
Definition: movsub_bsf.c:96
const AVBitStreamFilter ff_mpeg4_unpack_bframes_bsf
const AVBitStreamFilter ff_imx_dump_header_bsf
common internal and external API header
const AVBitStreamFilter ff_dca_core_bsf
Definition: dca_core_bsf.c:62
const AVBitStreamFilter ff_mjpeg2jpeg_bsf
const AVBitStreamFilter ff_extract_extradata_bsf
const AVBitStreamFilter ff_chomp_bsf
This filter removes a string of NULL bytes from the end of a packet.
Definition: chomp_bsf.c:47
const AVBitStreamFilter ff_noise_bsf
Definition: noise_bsf.c:86
const AVBitStreamFilter ff_aac_adtstoasc_bsf
const AVBitStreamFilter ff_mp3_header_decompress_bsf
const char * name
Definition: opengl_enc.c:103
const AVBitStreamFilter ff_dump_extradata_bsf