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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;
44 extern const AVBitStreamFilter ff_noise_bsf;
45 extern const AVBitStreamFilter ff_null_bsf;
52 
53 #include "libavcodec/bsf_list.c"
54 
55 const AVBitStreamFilter *av_bsf_iterate(void **opaque)
56 {
57  uintptr_t i = (uintptr_t)*opaque;
58  const AVBitStreamFilter *f = bitstream_filters[i];
59 
60  if (f)
61  *opaque = (void*)(i + 1);
62 
63  return f;
64 }
65 
66 #if FF_API_NEXT
67 const AVBitStreamFilter *av_bsf_next(void **opaque) {
68  return av_bsf_iterate(opaque);
69 }
70 #endif
71 
73 {
74  const AVBitStreamFilter *f = NULL;
75  void *i = 0;
76 
77  while ((f = av_bsf_iterate(&i))) {
78  if (!strcmp(f->name, name))
79  return f;
80  }
81 
82  return NULL;
83 }
84 
86 {
87  const AVBitStreamFilter *f = NULL;
88  void *i = 0;
89 
90  /* find the filter that corresponds to prev */
91  while (prev && (f = av_bsf_iterate(&i))) {
92  if (f->priv_class == prev) {
93  break;
94  }
95  }
96 
97  /* find next filter with priv options */
98  while ((f = av_bsf_iterate(&i))) {
99  if (f->priv_class)
100  return f->priv_class;
101  }
102  return NULL;
103 }
const AVBitStreamFilter ff_mpeg2_metadata_bsf
#define NULL
Definition: coverity.c:32
const AVClass * priv_class
A class for the private data, used to declare bitstream filter private AVOptions. ...
Definition: avcodec.h:5706
const AVBitStreamFilter ff_trace_headers_bsf
const AVBitStreamFilter * av_bsf_next(void **opaque)
const AVBitStreamFilter * av_bsf_get_by_name(const char *name)
const AVBitStreamFilter * av_bsf_iterate(void **opaque)
Iterate over all registered bitstream filters.
const AVBitStreamFilter ff_h264_metadata_bsf
const AVBitStreamFilter ff_mjpega_dump_header_bsf
const char * name
Definition: avcodec.h:5688
const AVBitStreamFilter ff_h264_redundant_pps_bsf
const AVBitStreamFilter ff_vp9_raw_reorder_bsf
const AVBitStreamFilter ff_h264_mp4toannexb_bsf
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
const AVBitStreamFilter ff_vp9_superframe_split_bsf
Libavcodec external API header.
const AVBitStreamFilter ff_hevc_metadata_bsf
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_null_bsf
Definition: null_bsf.c:40
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:94
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