FFmpeg
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 <stdint.h>
20 #include <string.h>
21 
22 #include "libavutil/log.h"
23 
24 #include "bsf.h"
25 #include "bsf_internal.h"
26 
31 extern const FFBitStreamFilter ff_chomp_bsf;
53 extern const FFBitStreamFilter ff_noise_bsf;
54 extern const FFBitStreamFilter ff_null_bsf;
60 extern const FFBitStreamFilter ff_setts_bsf;
71 
72 #include "libavcodec/bsf_list.c"
73 
74 const AVBitStreamFilter *av_bsf_iterate(void **opaque)
75 {
76  uintptr_t i = (uintptr_t) * opaque;
77  const FFBitStreamFilter *f = bitstream_filters[i];
78 
79  if (f) {
80  *opaque = (void *)(i + 1);
81  return &f->p;
82  }
83  return NULL;
84 }
85 
87 {
88  const AVBitStreamFilter *f = NULL;
89  void *i = 0;
90 
91  if (!name)
92  return NULL;
93 
94  while ((f = av_bsf_iterate(&i))) {
95  if (!strcmp(f->name, name))
96  return f;
97  }
98 
99  return NULL;
100 }
101 
102 const AVClass *ff_bsf_child_class_iterate(void **opaque)
103 {
104  const AVBitStreamFilter *f;
105 
106  /* find next filter with priv options */
107  while ((f = av_bsf_iterate(opaque))) {
108  if (f->priv_class)
109  return f->priv_class;
110  }
111  return NULL;
112 }
name
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default minimum maximum flags name is the option name
Definition: writing_filters.txt:88
ff_truehd_core_bsf
const FFBitStreamFilter ff_truehd_core_bsf
Definition: truehd_core.c:176
ff_h264_mp4toannexb_bsf
const FFBitStreamFilter ff_h264_mp4toannexb_bsf
Definition: h264_mp4toannexb.c:448
bsf_internal.h
ff_dv_error_marker_bsf
const FFBitStreamFilter ff_dv_error_marker_bsf
Definition: dv_error_marker.c:131
ff_pcm_rechunk_bsf
const FFBitStreamFilter ff_pcm_rechunk_bsf
Definition: pcm_rechunk.c:232
ff_vp9_superframe_split_bsf
const FFBitStreamFilter ff_vp9_superframe_split_bsf
Definition: vp9_superframe_split.c:162
ff_hapqa_extract_bsf
const FFBitStreamFilter ff_hapqa_extract_bsf
Definition: hapqa_extract.c:130
ff_evc_frame_merge_bsf
const FFBitStreamFilter ff_evc_frame_merge_bsf
Definition: evc_frame_merge.c:282
ff_trace_headers_bsf
const FFBitStreamFilter ff_trace_headers_bsf
Definition: trace_headers.c:122
ff_hevc_mp4toannexb_bsf
const FFBitStreamFilter ff_hevc_mp4toannexb_bsf
Definition: hevc_mp4toannexb.c:201
bsf.h
ff_av1_frame_split_bsf
const FFBitStreamFilter ff_av1_frame_split_bsf
Definition: av1_frame_split.c:253
ff_chomp_bsf
const FFBitStreamFilter ff_chomp_bsf
This filter removes a string of NULL bytes from the end of a packet.
Definition: chomp.c:42
ff_h264_metadata_bsf
const FFBitStreamFilter ff_h264_metadata_bsf
Definition: h264_metadata.c:716
ff_eac3_core_bsf
const FFBitStreamFilter ff_eac3_core_bsf
Definition: eac3_core.c:82
ff_mov2textsub_bsf
const FFBitStreamFilter ff_mov2textsub_bsf
Definition: movsub.c:84
ff_opus_metadata_bsf
const FFBitStreamFilter ff_opus_metadata_bsf
Definition: opus_metadata.c:61
ff_dts2pts_bsf
const FFBitStreamFilter ff_dts2pts_bsf
Definition: dts2pts.c:533
ff_filter_units_bsf
const FFBitStreamFilter ff_filter_units_bsf
Definition: filter_units.c:276
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
NULL
#define NULL
Definition: coverity.c:32
FFBitStreamFilter
Definition: bsf_internal.h:27
ff_vvc_mp4toannexb_bsf
const FFBitStreamFilter ff_vvc_mp4toannexb_bsf
Definition: vvc_mp4toannexb.c:322
ff_showinfo_bsf
const FFBitStreamFilter ff_showinfo_bsf
Definition: showinfo.c:59
ff_mpeg4_unpack_bframes_bsf
const FFBitStreamFilter ff_mpeg4_unpack_bframes_bsf
Definition: mpeg4_unpack_bframes.c:158
ff_dca_core_bsf
const FFBitStreamFilter ff_dca_core_bsf
Definition: dca_core.c:57
ff_bsf_child_class_iterate
const AVClass * ff_bsf_child_class_iterate(void **opaque)
Definition: bitstream_filters.c:102
ff_mjpega_dump_header_bsf
const FFBitStreamFilter ff_mjpega_dump_header_bsf
Definition: mjpega_dump_header.c:104
f
f
Definition: af_crystalizer.c:121
ff_media100_to_mjpegb_bsf
const FFBitStreamFilter ff_media100_to_mjpegb_bsf
Definition: media100_to_mjpegb.c:163
ff_h264_redundant_pps_bsf
const FFBitStreamFilter ff_h264_redundant_pps_bsf
Definition: h264_redundant_pps.c:119
ff_pgs_frame_merge_bsf
const FFBitStreamFilter ff_pgs_frame_merge_bsf
Definition: pgs_frame_merge.c:183
log.h
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:256
ff_mpeg2_metadata_bsf
const FFBitStreamFilter ff_mpeg2_metadata_bsf
Definition: mpeg2_metadata.c:235
ff_vvc_metadata_bsf
const FFBitStreamFilter ff_vvc_metadata_bsf
Definition: h266_metadata.c:142
av_bsf_iterate
const AVBitStreamFilter * av_bsf_iterate(void **opaque)
Iterate over all registered bitstream filters.
Definition: bitstream_filters.c:74
ff_setts_bsf
const FFBitStreamFilter ff_setts_bsf
Definition: setts.c:270
ff_null_bsf
const FFBitStreamFilter ff_null_bsf
Definition: null.c:26
ff_vp9_raw_reorder_bsf
const FFBitStreamFilter ff_vp9_raw_reorder_bsf
Definition: vp9_raw_reorder.c:407
AVBitStreamFilter
Definition: bsf.h:111
ff_prores_metadata_bsf
const FFBitStreamFilter ff_prores_metadata_bsf
Definition: prores_metadata.c:169
ff_noise_bsf
const FFBitStreamFilter ff_noise_bsf
Definition: noise.c:229
ff_text2movsub_bsf
const FFBitStreamFilter ff_text2movsub_bsf
Definition: movsub.c:60
ff_mjpeg2jpeg_bsf
const FFBitStreamFilter ff_mjpeg2jpeg_bsf
Definition: mjpeg2jpeg.c:138
ff_aac_adtstoasc_bsf
const FFBitStreamFilter ff_aac_adtstoasc_bsf
Definition: aac_adtstoasc.c:150
ff_vp9_superframe_bsf
const FFBitStreamFilter ff_vp9_superframe_bsf
Definition: vp9_superframe.c:223
ff_av1_frame_merge_bsf
const FFBitStreamFilter ff_av1_frame_merge_bsf
Definition: av1_frame_merge.c:159
ff_remove_extradata_bsf
const FFBitStreamFilter ff_remove_extradata_bsf
Definition: remove_extradata.c:248
ff_imx_dump_header_bsf
const FFBitStreamFilter ff_imx_dump_header_bsf
Definition: imx_dump_header.c:72
ff_dump_extradata_bsf
const FFBitStreamFilter ff_dump_extradata_bsf
Definition: dump_extradata.c:101
ff_extract_extradata_bsf
const FFBitStreamFilter ff_extract_extradata_bsf
Definition: extract_extradata.c:466
ff_av1_metadata_bsf
const FFBitStreamFilter ff_av1_metadata_bsf
Definition: av1_metadata.c:223
ff_hevc_metadata_bsf
const FFBitStreamFilter ff_hevc_metadata_bsf
Definition: h265_metadata.c:495
ff_vp9_metadata_bsf
const FFBitStreamFilter ff_vp9_metadata_bsf
Definition: vp9_metadata.c:138
av_bsf_get_by_name
const AVBitStreamFilter * av_bsf_get_by_name(const char *name)
Definition: bitstream_filters.c:86