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 "config.h"
20 
21 #include "libavutil/common.h"
22 #include "libavutil/log.h"
23 
24 #include "avcodec.h"
25 #include "bsf.h"
26 
30 extern const AVBitStreamFilter ff_chomp_bsf;
49 extern const AVBitStreamFilter ff_noise_bsf;
50 extern const AVBitStreamFilter ff_null_bsf;
60 
61 #include "libavcodec/bsf_list.c"
62 
63 const AVBitStreamFilter *av_bsf_iterate(void **opaque)
64 {
65  uintptr_t i = (uintptr_t)*opaque;
66  const AVBitStreamFilter *f = bitstream_filters[i];
67 
68  if (f)
69  *opaque = (void*)(i + 1);
70 
71  return f;
72 }
73 
74 #if FF_API_NEXT
75 const AVBitStreamFilter *av_bsf_next(void **opaque) {
76  return av_bsf_iterate(opaque);
77 }
78 #endif
79 
81 {
82  const AVBitStreamFilter *f = NULL;
83  void *i = 0;
84 
85  if (!name)
86  return NULL;
87 
88  while ((f = av_bsf_iterate(&i))) {
89  if (!strcmp(f->name, name))
90  return f;
91  }
92 
93  return NULL;
94 }
95 
97 {
98  const AVBitStreamFilter *f = NULL;
99  void *i = 0;
100 
101  /* find the filter that corresponds to prev */
102  while (prev && (f = av_bsf_iterate(&i))) {
103  if (f->priv_class == prev) {
104  break;
105  }
106  }
107 
108  /* find next filter with priv options */
109  while ((f = av_bsf_iterate(&i))) {
110  if (f->priv_class)
111  return f->priv_class;
112  }
113  return NULL;
114 }
ff_mpeg2_metadata_bsf
const AVBitStreamFilter ff_mpeg2_metadata_bsf
Definition: mpeg2_metadata_bsf.c:304
av_bsf_iterate
const AVBitStreamFilter * av_bsf_iterate(void **opaque)
Iterate over all registered bitstream filters.
Definition: bitstream_filters.c:63
ff_mjpega_dump_header_bsf
const AVBitStreamFilter ff_mjpega_dump_header_bsf
Definition: mjpega_dump_header_bsf.c:104
ff_h264_redundant_pps_bsf
const AVBitStreamFilter ff_h264_redundant_pps_bsf
Definition: h264_redundant_pps_bsf.c:186
ff_dca_core_bsf
const AVBitStreamFilter ff_dca_core_bsf
Definition: dca_core_bsf.c:58
name
const char * name
Definition: avisynth_c.h:867
ff_aac_adtstoasc_bsf
const AVBitStreamFilter ff_aac_adtstoasc_bsf
Definition: aac_adtstoasc_bsf.c:152
ff_vp9_superframe_bsf
const AVBitStreamFilter ff_vp9_superframe_bsf
Definition: vp9_superframe_bsf.c:217
ff_av1_frame_split_bsf
const AVBitStreamFilter ff_av1_frame_split_bsf
Definition: av1_frame_split_bsf.c:253
bsf.h
ff_mp3_header_decompress_bsf
const AVBitStreamFilter ff_mp3_header_decompress_bsf
Definition: mp3_header_decompress_bsf.c:125
ff_eac3_core_bsf
const AVBitStreamFilter ff_eac3_core_bsf
Definition: eac3_core_bsf.c:82
av_bsf_get_by_name
const AVBitStreamFilter * av_bsf_get_by_name(const char *name)
Definition: bitstream_filters.c:80
ff_h264_mp4toannexb_bsf
const AVBitStreamFilter ff_h264_mp4toannexb_bsf
Definition: h264_mp4toannexb_bsf.c:296
ff_vp9_metadata_bsf
const AVBitStreamFilter ff_vp9_metadata_bsf
Definition: vp9_metadata_bsf.c:150
f
#define f(width, name)
Definition: cbs_vp9.c:255
ff_filter_units_bsf
const AVBitStreamFilter ff_filter_units_bsf
Definition: filter_units_bsf.c:237
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:67
NULL
#define NULL
Definition: coverity.c:32
ff_hapqa_extract_bsf
const AVBitStreamFilter ff_hapqa_extract_bsf
Definition: hapqa_extract_bsf.c:128
ff_h264_metadata_bsf
const AVBitStreamFilter ff_h264_metadata_bsf
Definition: h264_metadata_bsf.c:763
ff_vp9_superframe_split_bsf
const AVBitStreamFilter ff_vp9_superframe_split_bsf
Definition: vp9_superframe_split_bsf.c:158
ff_vp9_raw_reorder_bsf
const AVBitStreamFilter ff_vp9_raw_reorder_bsf
Definition: vp9_raw_reorder_bsf.c:411
ff_null_bsf
const AVBitStreamFilter ff_null_bsf
Definition: null_bsf.c:32
ff_truehd_core_bsf
const AVBitStreamFilter ff_truehd_core_bsf
Definition: truehd_core_bsf.c:178
ff_bsf_child_class_next
const AVClass * ff_bsf_child_class_next(const AVClass *prev)
Definition: bitstream_filters.c:96
av_bsf_next
const AVBitStreamFilter * av_bsf_next(void **opaque)
Definition: bitstream_filters.c:75
ff_prores_metadata_bsf
const AVBitStreamFilter ff_prores_metadata_bsf
Definition: prores_metadata_bsf.c:165
ff_mov2textsub_bsf
const AVBitStreamFilter ff_mov2textsub_bsf
Definition: movsub_bsf.c:84
ff_hevc_mp4toannexb_bsf
const AVBitStreamFilter ff_hevc_mp4toannexb_bsf
Definition: hevc_mp4toannexb_bsf.c:197
log.h
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:259
ff_remove_extradata_bsf
const AVBitStreamFilter ff_remove_extradata_bsf
Definition: remove_extradata_bsf.c:110
common.h
ff_hevc_metadata_bsf
const AVBitStreamFilter ff_hevc_metadata_bsf
Definition: h265_metadata_bsf.c:588
ff_text2movsub_bsf
const AVBitStreamFilter ff_text2movsub_bsf
Definition: movsub_bsf.c:60
avcodec.h
ff_mjpeg2jpeg_bsf
const AVBitStreamFilter ff_mjpeg2jpeg_bsf
Definition: mjpeg2jpeg_bsf.c:139
ff_trace_headers_bsf
const AVBitStreamFilter ff_trace_headers_bsf
Definition: trace_headers_bsf.c:106
AVBitStreamFilter
Definition: avcodec.h:5812
config.h
ff_dump_extradata_bsf
const AVBitStreamFilter ff_dump_extradata_bsf
Definition: dump_extradata_bsf.c:102
ff_chomp_bsf
const AVBitStreamFilter ff_chomp_bsf
This filter removes a string of NULL bytes from the end of a packet.
Definition: chomp_bsf.c:43
ff_imx_dump_header_bsf
const AVBitStreamFilter ff_imx_dump_header_bsf
Definition: imx_dump_header_bsf.c:72
ff_mpeg4_unpack_bframes_bsf
const AVBitStreamFilter ff_mpeg4_unpack_bframes_bsf
Definition: mpeg4_unpack_bframes_bsf.c:171
ff_extract_extradata_bsf
const AVBitStreamFilter ff_extract_extradata_bsf
Definition: extract_extradata_bsf.c:427
ff_noise_bsf
const AVBitStreamFilter ff_noise_bsf
Definition: noise_bsf.c:88
ff_av1_metadata_bsf
const AVBitStreamFilter ff_av1_metadata_bsf
Definition: av1_metadata_bsf.c:305