FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavformat/riff.h
Date: 2022-11-26 13:19:19
Exec Total Coverage
Lines: 2 2 100.0%
Branches: 0 0 -%

Line Branch Exec Source
1 /*
2 * RIFF common functions and data
3 * copyright (c) 2000 Fabrice Bellard
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 /**
23 * @file
24 * internal header for RIFF based (de)muxers
25 * do NOT include this in end user applications
26 */
27
28 #ifndef AVFORMAT_RIFF_H
29 #define AVFORMAT_RIFF_H
30
31 #include "avio.h"
32 #include "internal.h"
33 #include "metadata.h"
34
35 extern const AVMetadataConv ff_riff_info_conv[];
36
37 int64_t ff_start_tag(AVIOContext *pb, const char *tag);
38 void ff_end_tag(AVIOContext *pb, int64_t start);
39
40 /**
41 * Read BITMAPINFOHEADER structure and set AVStream codec width, height and
42 * bits_per_encoded_sample fields. Does not read extradata.
43 * Writes the size of the BMP file to *size.
44 * @return codec tag
45 */
46 int ff_get_bmp_header(AVIOContext *pb, AVStream *st, uint32_t *size);
47
48 void ff_put_bmp_header(AVIOContext *pb, AVCodecParameters *par, int for_asf, int ignore_extradata, int rgb_frame_is_flipped);
49
50 /**
51 * Tell ff_put_wav_header() to use WAVEFORMATEX even for PCM codecs.
52 */
53 #define FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX 0x00000001
54
55 /**
56 * Tell ff_put_wav_header() to write an empty channel mask.
57 */
58 #define FF_PUT_WAV_HEADER_SKIP_CHANNELMASK 0x00000002
59
60 /**
61 * Write WAVEFORMAT header structure.
62 *
63 * @param flags a combination of FF_PUT_WAV_HEADER_* constants
64 *
65 * @return the size or -1 on error
66 */
67 int ff_put_wav_header(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par, int flags);
68
69 enum AVCodecID ff_wav_codec_get_id(unsigned int tag, int bps);
70 int ff_get_wav_header(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par, int size, int big_endian);
71
72 extern const AVCodecTag ff_codec_bmp_tags[]; // exposed through avformat_get_riff_video_tags()
73 extern const AVCodecTag ff_codec_wav_tags[];
74 /* The following list contains both ff_codec_bmp_tags and ff_codec_wav_tags. */
75 extern const AVCodecTag *const ff_riff_codec_tags_list[];
76 /* The following list contains only ff_codec_wav_tags. */
77 extern const AVCodecTag *const ff_wav_codec_tags_list[];
78
79 extern const AVCodecTag ff_codec_bmp_tags_unofficial[];
80
81 void ff_parse_specific_params(AVStream *st, int *au_rate, int *au_ssize, int *au_scale);
82
83 int ff_read_riff_info(AVFormatContext *s, int64_t size);
84
85 /**
86 * Write all recognized RIFF tags from s->metadata
87 */
88 void ff_riff_write_info(AVFormatContext *s);
89
90 /**
91 * Write a single RIFF info tag
92 */
93 void ff_riff_write_info_tag(AVIOContext *pb, const char *tag, const char *str);
94
95 typedef uint8_t ff_asf_guid[16];
96
97 typedef struct AVCodecGuid {
98 enum AVCodecID id;
99 ff_asf_guid guid;
100 } AVCodecGuid;
101
102 extern const AVCodecGuid ff_codec_wav_guids[];
103
104 #define FF_PRI_GUID \
105 "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x " \
106 "{%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x}"
107
108 #define FF_ARG_GUID(g) \
109 g[0], g[1], g[2], g[3], g[4], g[5], g[6], g[7], \
110 g[8], g[9], g[10], g[11], g[12], g[13], g[14], g[15],\
111 g[3], g[2], g[1], g[0], g[5], g[4], g[7], g[6], \
112 g[8], g[9], g[10], g[11], g[12], g[13], g[14], g[15]
113
114 #define FF_MEDIASUBTYPE_BASE_GUID \
115 0x00, 0x00, 0x10, 0x00, 0x80, 0x00, 0x00, 0xAA, 0x00, 0x38, 0x9B, 0x71
116 #define FF_AMBISONIC_BASE_GUID \
117 0x21, 0x07, 0xD3, 0x11, 0x86, 0x44, 0xC8, 0xC1, 0xCA, 0x00, 0x00, 0x00
118 #define FF_BROKEN_BASE_GUID \
119 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x80, 0x00, 0x00, 0xAA
120
121 45844 static av_always_inline int ff_guidcmp(const void *g1, const void *g2)
122 {
123 45844 return memcmp(g1, g2, sizeof(ff_asf_guid));
124 }
125
126 int ff_get_guid(AVIOContext *s, ff_asf_guid *g);
127 void ff_put_guid(AVIOContext *s, const ff_asf_guid *g);
128 const ff_asf_guid *ff_get_codec_guid(enum AVCodecID id, const AVCodecGuid *av_guid);
129
130 enum AVCodecID ff_codec_guid_get_id(const AVCodecGuid *guids, ff_asf_guid guid);
131
132 #endif /* AVFORMAT_RIFF_H */
133