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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 "libavcodec/avcodec.h" | |
32 | #include "avio.h" | |
33 | #include "internal.h" | |
34 | #include "metadata.h" | |
35 | ||
36 | extern const AVMetadataConv ff_riff_info_conv[]; | |
37 | ||
38 | int64_t ff_start_tag(AVIOContext *pb, const char *tag); | |
39 | void ff_end_tag(AVIOContext *pb, int64_t start); | |
40 | ||
41 | /** | |
42 | * Read BITMAPINFOHEADER structure and set AVStream codec width, height and | |
43 | * bits_per_encoded_sample fields. Does not read extradata. | |
44 | * @return codec tag | |
45 | */ | |
46 | int ff_get_bmp_header(AVIOContext *pb, AVStream *st, unsigned *esize); | |
47 | ||
48 | void ff_put_bmp_header(AVIOContext *pb, AVCodecContext *enc, const AVCodecTag *tags, int for_asf, int ignore_extradata); | |
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 | * Write WAVEFORMAT header structure. | |
57 | * | |
58 | * @param flags a combination of FF_PUT_WAV_HEADER_* constants | |
59 | * | |
60 | * @return the size or -1 on error | |
61 | */ | |
62 | int ff_put_wav_header(AVIOContext *pb, AVCodecContext *enc, int flags); | |
63 | ||
64 | enum AVCodecID ff_wav_codec_get_id(unsigned int tag, int bps); | |
65 | int ff_get_wav_header(AVIOContext *pb, AVCodecContext *codec, int size); | |
66 | ||
67 | extern const AVCodecTag ff_codec_bmp_tags[]; // exposed through avformat_get_riff_video_tags() | |
68 | extern const AVCodecTag ff_codec_wav_tags[]; | |
69 | ||
70 | void ff_parse_specific_params(AVStream *st, int *au_rate, int *au_ssize, int *au_scale); | |
71 | ||
72 | int ff_read_riff_info(AVFormatContext *s, int64_t size); | |
73 | ||
74 | /** | |
75 | * Write all recognized RIFF tags from s->metadata | |
76 | */ | |
77 | void ff_riff_write_info(AVFormatContext *s); | |
78 | ||
79 | /** | |
80 | * Write a single RIFF info tag | |
81 | */ | |
82 | void ff_riff_write_info_tag(AVIOContext *pb, const char *tag, const char *str); | |
83 | ||
84 | typedef uint8_t ff_asf_guid[16]; | |
85 | ||
86 | typedef struct AVCodecGuid { | |
87 | enum AVCodecID id; | |
88 | ff_asf_guid guid; | |
89 | } AVCodecGuid; | |
90 | ||
91 | extern const AVCodecGuid ff_codec_wav_guids[]; | |
92 | ||
93 | #define FF_PRI_GUID \ | |
f6fa7814 DM |
94 | "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x " \ |
95 | "{%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x}" | |
2ba45a60 DM |
96 | |
97 | #define FF_ARG_GUID(g) \ | |
98 | g[0], g[1], g[2], g[3], g[4], g[5], g[6], g[7], \ | |
f6fa7814 DM |
99 | g[8], g[9], g[10], g[11], g[12], g[13], g[14], g[15],\ |
100 | g[3], g[2], g[1], g[0], g[5], g[4], g[7], g[6], \ | |
2ba45a60 DM |
101 | g[8], g[9], g[10], g[11], g[12], g[13], g[14], g[15] |
102 | ||
103 | #define FF_MEDIASUBTYPE_BASE_GUID \ | |
104 | 0x00, 0x00, 0x10, 0x00, 0x80, 0x00, 0x00, 0xAA, 0x00, 0x38, 0x9B, 0x71 | |
105 | ||
106 | static av_always_inline int ff_guidcmp(const void *g1, const void *g2) | |
107 | { | |
108 | return memcmp(g1, g2, sizeof(ff_asf_guid)); | |
109 | } | |
110 | ||
111 | int ff_get_guid(AVIOContext *s, ff_asf_guid *g); | |
112 | void ff_put_guid(AVIOContext *s, const ff_asf_guid *g); | |
113 | const ff_asf_guid *get_codec_guid(enum AVCodecID id, const AVCodecGuid *av_guid); | |
114 | ||
115 | enum AVCodecID ff_codec_guid_get_id(const AVCodecGuid *guids, ff_asf_guid guid); | |
116 | ||
117 | #endif /* AVFORMAT_RIFF_H */ |