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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 
29 extern const AVBitStreamFilter ff_chomp_bsf;
48 extern const AVBitStreamFilter ff_noise_bsf;
49 extern const AVBitStreamFilter ff_null_bsf;
59 
60 #include "libavcodec/bsf_list.c"
61 
62 const AVBitStreamFilter *av_bsf_iterate(void **opaque)
63 {
64  uintptr_t i = (uintptr_t)*opaque;
65  const AVBitStreamFilter *f = bitstream_filters[i];
66 
67  if (f)
68  *opaque = (void*)(i + 1);
69 
70  return f;
71 }
72 
73 #if FF_API_NEXT
74 const AVBitStreamFilter *av_bsf_next(void **opaque) {
75  return av_bsf_iterate(opaque);
76 }
77 #endif
78 
80 {
81  const AVBitStreamFilter *f = NULL;
82  void *i = 0;
83 
84  if (!name)
85  return NULL;
86 
87  while ((f = av_bsf_iterate(&i))) {
88  if (!strcmp(f->name, name))
89  return f;
90  }
91 
92  return NULL;
93 }
94 
96 {
97  const AVBitStreamFilter *f = NULL;
98  void *i = 0;
99 
100  /* find the filter that corresponds to prev */
101  while (prev && (f = av_bsf_iterate(&i))) {
102  if (f->priv_class == prev) {
103  break;
104  }
105  }
106 
107  /* find next filter with priv options */
108  while ((f = av_bsf_iterate(&i))) {
109  if (f->priv_class)
110  return f->priv_class;
111  }
112  return NULL;
113 }
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:5788
const AVBitStreamFilter ff_trace_headers_bsf
const AVBitStreamFilter ff_av1_metadata_bsf
const AVBitStreamFilter * av_bsf_next(void **opaque)
const AVBitStreamFilter * av_bsf_get_by_name(const char *name)
const AVBitStreamFilter ff_eac3_core_bsf
Definition: eac3_core_bsf.c:82
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
#define f(width, name)
Definition: cbs_vp9.c:255
const char * name
Definition: avcodec.h:5770
const AVBitStreamFilter ff_h264_redundant_pps_bsf
const AVBitStreamFilter ff_vp9_raw_reorder_bsf
const AVBitStreamFilter ff_h264_mp4toannexb_bsf
const AVBitStreamFilter ff_vp9_metadata_bsf
const AVBitStreamFilter ff_vp9_superframe_bsf
const AVClass * ff_bsf_child_class_next(const AVClass *prev)
const AVBitStreamFilter ff_truehd_core_bsf
const AVBitStreamFilter ff_remove_extradata_bsf
const AVBitStreamFilter ff_prores_metadata_bsf
const AVBitStreamFilter ff_text2movsub_bsf
Definition: movsub_bsf.c:60
const AVBitStreamFilter ff_hapqa_extract_bsf
const AVBitStreamFilter ff_hevc_mp4toannexb_bsf
const AVBitStreamFilter ff_vp9_superframe_split_bsf
Libavcodec external API header.
const AVBitStreamFilter ff_hevc_metadata_bsf
const AVBitStreamFilter ff_filter_units_bsf
Describe the class of an AVClass context structure.
Definition: log.h:67
const AVBitStreamFilter ff_mov2textsub_bsf
Definition: movsub_bsf.c:84
const AVBitStreamFilter ff_null_bsf
Definition: null_bsf.c:32
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:58
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:43
const AVBitStreamFilter ff_noise_bsf
Definition: noise_bsf.c:88
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