blob: d30d793cd1d9018252272c4334b623fe865195c4
| 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, AVCodecParameters *par, 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 | * 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 | |
| 75 | void ff_parse_specific_params(AVStream *st, int *au_rate, int *au_ssize, int *au_scale); |
| 76 | |
| 77 | int ff_read_riff_info(AVFormatContext *s, int64_t size); |
| 78 | |
| 79 | /** |
| 80 | * Write all recognized RIFF tags from s->metadata |
| 81 | */ |
| 82 | void ff_riff_write_info(AVFormatContext *s); |
| 83 | |
| 84 | /** |
| 85 | * Write a single RIFF info tag |
| 86 | */ |
| 87 | void ff_riff_write_info_tag(AVIOContext *pb, const char *tag, const char *str); |
| 88 | |
| 89 | typedef uint8_t ff_asf_guid[16]; |
| 90 | |
| 91 | typedef struct AVCodecGuid { |
| 92 | enum AVCodecID id; |
| 93 | ff_asf_guid guid; |
| 94 | } AVCodecGuid; |
| 95 | |
| 96 | extern const AVCodecGuid ff_codec_wav_guids[]; |
| 97 | |
| 98 | #define FF_PRI_GUID \ |
| 99 | "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x " \ |
| 100 | "{%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x}" |
| 101 | |
| 102 | #define FF_ARG_GUID(g) \ |
| 103 | g[0], g[1], g[2], g[3], g[4], g[5], g[6], g[7], \ |
| 104 | g[8], g[9], g[10], g[11], g[12], g[13], g[14], g[15],\ |
| 105 | g[3], g[2], g[1], g[0], g[5], g[4], g[7], g[6], \ |
| 106 | g[8], g[9], g[10], g[11], g[12], g[13], g[14], g[15] |
| 107 | |
| 108 | #define FF_MEDIASUBTYPE_BASE_GUID \ |
| 109 | 0x00, 0x00, 0x10, 0x00, 0x80, 0x00, 0x00, 0xAA, 0x00, 0x38, 0x9B, 0x71 |
| 110 | #define FF_AMBISONIC_BASE_GUID \ |
| 111 | 0x21, 0x07, 0xD3, 0x11, 0x86, 0x44, 0xC8, 0xC1, 0xCA, 0x00, 0x00, 0x00 |
| 112 | #define FF_BROKEN_BASE_GUID \ |
| 113 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x80, 0x00, 0x00, 0xAA |
| 114 | |
| 115 | static av_always_inline int ff_guidcmp(const void *g1, const void *g2) |
| 116 | { |
| 117 | return memcmp(g1, g2, sizeof(ff_asf_guid)); |
| 118 | } |
| 119 | |
| 120 | int ff_get_guid(AVIOContext *s, ff_asf_guid *g); |
| 121 | void ff_put_guid(AVIOContext *s, const ff_asf_guid *g); |
| 122 | const ff_asf_guid *ff_get_codec_guid(enum AVCodecID id, const AVCodecGuid *av_guid); |
| 123 | |
| 124 | enum AVCodecID ff_codec_guid_get_id(const AVCodecGuid *guids, ff_asf_guid guid); |
| 125 | |
| 126 | #endif /* AVFORMAT_RIFF_H */ |
| 127 |