| 1 | /* |
| 2 | * ISO Media common code |
| 3 | * copyright (c) 2001 Fabrice Bellard |
| 4 | * copyright (c) 2002 Francois Revol <revol@free.fr> |
| 5 | * copyright (c) 2006 Baptiste Coudurier <baptiste.coudurier@free.fr> |
| 6 | * |
| 7 | * This file is part of FFmpeg. |
| 8 | * |
| 9 | * FFmpeg is free software; you can redistribute it and/or |
| 10 | * modify it under the terms of the GNU Lesser General Public |
| 11 | * License as published by the Free Software Foundation; either |
| 12 | * version 2.1 of the License, or (at your option) any later version. |
| 13 | * |
| 14 | * FFmpeg is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 17 | * Lesser General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU Lesser General Public |
| 20 | * License along with FFmpeg; if not, write to the Free Software |
| 21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 22 | */ |
| 23 | |
| 24 | #ifndef AVFORMAT_ISOM_H |
| 25 | #define AVFORMAT_ISOM_H |
| 26 | |
| 27 | #include "avio.h" |
| 28 | #include "internal.h" |
| 29 | #include "dv.h" |
| 30 | |
| 31 | /* isom.c */ |
| 32 | extern const AVCodecTag ff_mp4_obj_type[]; |
| 33 | extern const AVCodecTag ff_codec_movvideo_tags[]; |
| 34 | extern const AVCodecTag ff_codec_movaudio_tags[]; |
| 35 | extern const AVCodecTag ff_codec_movsubtitle_tags[]; |
| 36 | |
| 37 | int ff_mov_iso639_to_lang(const char lang[4], int mp4); |
| 38 | int ff_mov_lang_to_iso639(unsigned code, char to[4]); |
| 39 | |
| 40 | /* the QuickTime file format is quite convoluted... |
| 41 | * it has lots of index tables, each indexing something in another one... |
| 42 | * Here we just use what is needed to read the chunks |
| 43 | */ |
| 44 | |
| 45 | typedef struct MOVStts { |
| 46 | int count; |
| 47 | int duration; |
| 48 | } MOVStts; |
| 49 | |
| 50 | typedef struct MOVStsc { |
| 51 | int first; |
| 52 | int count; |
| 53 | int id; |
| 54 | } MOVStsc; |
| 55 | |
| 56 | typedef struct MOVDref { |
| 57 | uint32_t type; |
| 58 | char *path; |
| 59 | char *dir; |
| 60 | char volume[28]; |
| 61 | char filename[64]; |
| 62 | int16_t nlvl_to, nlvl_from; |
| 63 | } MOVDref; |
| 64 | |
| 65 | typedef struct MOVAtom { |
| 66 | uint32_t type; |
| 67 | int64_t size; /* total size (excluding the size and type fields) */ |
| 68 | } MOVAtom; |
| 69 | |
| 70 | struct MOVParseTableEntry; |
| 71 | |
| 72 | typedef struct MOVFragment { |
| 73 | unsigned track_id; |
| 74 | uint64_t base_data_offset; |
| 75 | uint64_t moof_offset; |
| 76 | uint64_t implicit_offset; |
| 77 | unsigned stsd_id; |
| 78 | unsigned duration; |
| 79 | unsigned size; |
| 80 | unsigned flags; |
| 81 | int64_t time; |
| 82 | } MOVFragment; |
| 83 | |
| 84 | typedef struct MOVTrackExt { |
| 85 | unsigned track_id; |
| 86 | unsigned stsd_id; |
| 87 | unsigned duration; |
| 88 | unsigned size; |
| 89 | unsigned flags; |
| 90 | } MOVTrackExt; |
| 91 | |
| 92 | typedef struct MOVSbgp { |
| 93 | unsigned int count; |
| 94 | unsigned int index; |
| 95 | } MOVSbgp; |
| 96 | |
| 97 | typedef struct MOVFragmentIndexItem { |
| 98 | int64_t moof_offset; |
| 99 | int64_t time; |
| 100 | } MOVFragmentIndexItem; |
| 101 | |
| 102 | typedef struct MOVFragmentIndex { |
| 103 | unsigned track_id; |
| 104 | unsigned item_count; |
| 105 | unsigned current_item; |
| 106 | MOVFragmentIndexItem *items; |
| 107 | } MOVFragmentIndex; |
| 108 | |
| 109 | typedef struct MOVStreamContext { |
| 110 | AVIOContext *pb; |
| 111 | int pb_is_copied; |
| 112 | int ffindex; ///< AVStream index |
| 113 | int next_chunk; |
| 114 | unsigned int chunk_count; |
| 115 | int64_t *chunk_offsets; |
| 116 | unsigned int stts_count; |
| 117 | MOVStts *stts_data; |
| 118 | unsigned int ctts_count; |
| 119 | MOVStts *ctts_data; |
| 120 | unsigned int stsc_count; |
| 121 | MOVStsc *stsc_data; |
| 122 | unsigned int stps_count; |
| 123 | unsigned *stps_data; ///< partial sync sample for mpeg-2 open gop |
| 124 | int ctts_index; |
| 125 | int ctts_sample; |
| 126 | unsigned int sample_size; ///< may contain value calculated from stsd or value from stsz atom |
| 127 | unsigned int stsz_sample_size; ///< always contains sample size from stsz atom |
| 128 | unsigned int sample_count; |
| 129 | int *sample_sizes; |
| 130 | int keyframe_absent; |
| 131 | unsigned int keyframe_count; |
| 132 | int *keyframes; |
| 133 | int time_scale; |
| 134 | int64_t empty_duration; ///< empty duration of the first edit list entry |
| 135 | int64_t start_time; ///< start time of the media |
| 136 | int64_t time_offset; ///< time offset of the edit list entries |
| 137 | int current_sample; |
| 138 | unsigned int bytes_per_frame; |
| 139 | unsigned int samples_per_frame; |
| 140 | int dv_audio_container; |
| 141 | int pseudo_stream_id; ///< -1 means demux all ids |
| 142 | int16_t audio_cid; ///< stsd audio compression id |
| 143 | unsigned drefs_count; |
| 144 | MOVDref *drefs; |
| 145 | int dref_id; |
| 146 | int timecode_track; |
| 147 | int wrong_dts; ///< dts are wrong due to huge ctts offset (iMovie files) |
| 148 | int width; ///< tkhd width |
| 149 | int height; ///< tkhd height |
| 150 | int dts_shift; ///< dts shift when ctts is negative |
| 151 | uint32_t palette[256]; |
| 152 | int has_palette; |
| 153 | int64_t data_size; |
| 154 | uint32_t tmcd_flags; ///< tmcd track flags |
| 155 | int64_t track_end; ///< used for dts generation in fragmented movie files |
| 156 | int start_pad; ///< amount of samples to skip due to enc-dec delay |
| 157 | unsigned int rap_group_count; |
| 158 | MOVSbgp *rap_group; |
| 159 | |
| 160 | int nb_frames_for_fps; |
| 161 | int64_t duration_for_fps; |
| 162 | |
| 163 | int32_t *display_matrix; |
| 164 | } MOVStreamContext; |
| 165 | |
| 166 | typedef struct MOVContext { |
| 167 | const AVClass *class; ///< class for private options |
| 168 | AVFormatContext *fc; |
| 169 | int time_scale; |
| 170 | int64_t duration; ///< duration of the longest track |
| 171 | int found_moov; ///< 'moov' atom has been found |
| 172 | int found_mdat; ///< 'mdat' atom has been found |
| 173 | DVDemuxContext *dv_demux; |
| 174 | AVFormatContext *dv_fctx; |
| 175 | int isom; ///< 1 if file is ISO Media (mp4/3gp) |
| 176 | MOVFragment fragment; ///< current fragment in moof atom |
| 177 | MOVTrackExt *trex_data; |
| 178 | unsigned trex_count; |
| 179 | int itunes_metadata; ///< metadata are itunes style |
| 180 | int chapter_track; |
| 181 | int use_absolute_path; |
| 182 | int ignore_editlist; |
| 183 | int64_t next_root_atom; ///< offset of the next root atom |
| 184 | int export_all; |
| 185 | int *bitrates; ///< bitrates read before streams creation |
| 186 | int bitrates_count; |
| 187 | int moov_retry; |
| 188 | int use_mfra_for; |
| 189 | int has_looked_for_mfra; |
| 190 | MOVFragmentIndex** fragment_index_data; |
| 191 | unsigned fragment_index_count; |
| 192 | int atom_depth; |
| 193 | } MOVContext; |
| 194 | |
| 195 | int ff_mp4_read_descr_len(AVIOContext *pb); |
| 196 | int ff_mp4_read_descr(AVFormatContext *fc, AVIOContext *pb, int *tag); |
| 197 | int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext *pb); |
| 198 | void ff_mp4_parse_es_descr(AVIOContext *pb, int *es_id); |
| 199 | |
| 200 | #define MP4ODescrTag 0x01 |
| 201 | #define MP4IODescrTag 0x02 |
| 202 | #define MP4ESDescrTag 0x03 |
| 203 | #define MP4DecConfigDescrTag 0x04 |
| 204 | #define MP4DecSpecificDescrTag 0x05 |
| 205 | #define MP4SLDescrTag 0x06 |
| 206 | |
| 207 | #define MOV_TFHD_BASE_DATA_OFFSET 0x01 |
| 208 | #define MOV_TFHD_STSD_ID 0x02 |
| 209 | #define MOV_TFHD_DEFAULT_DURATION 0x08 |
| 210 | #define MOV_TFHD_DEFAULT_SIZE 0x10 |
| 211 | #define MOV_TFHD_DEFAULT_FLAGS 0x20 |
| 212 | #define MOV_TFHD_DURATION_IS_EMPTY 0x010000 |
| 213 | #define MOV_TFHD_DEFAULT_BASE_IS_MOOF 0x020000 |
| 214 | |
| 215 | #define MOV_TRUN_DATA_OFFSET 0x01 |
| 216 | #define MOV_TRUN_FIRST_SAMPLE_FLAGS 0x04 |
| 217 | #define MOV_TRUN_SAMPLE_DURATION 0x100 |
| 218 | #define MOV_TRUN_SAMPLE_SIZE 0x200 |
| 219 | #define MOV_TRUN_SAMPLE_FLAGS 0x400 |
| 220 | #define MOV_TRUN_SAMPLE_CTS 0x800 |
| 221 | |
| 222 | #define MOV_FRAG_SAMPLE_FLAG_DEGRADATION_PRIORITY_MASK 0x0000ffff |
| 223 | #define MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC 0x00010000 |
| 224 | #define MOV_FRAG_SAMPLE_FLAG_PADDING_MASK 0x000e0000 |
| 225 | #define MOV_FRAG_SAMPLE_FLAG_REDUNDANCY_MASK 0x00300000 |
| 226 | #define MOV_FRAG_SAMPLE_FLAG_DEPENDED_MASK 0x00c00000 |
| 227 | #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_MASK 0x03000000 |
| 228 | |
| 229 | #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_NO 0x02000000 |
| 230 | #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES 0x01000000 |
| 231 | |
| 232 | #define MOV_TKHD_FLAG_ENABLED 0x0001 |
| 233 | #define MOV_TKHD_FLAG_IN_MOVIE 0x0002 |
| 234 | #define MOV_TKHD_FLAG_IN_PREVIEW 0x0004 |
| 235 | #define MOV_TKHD_FLAG_IN_POSTER 0x0008 |
| 236 | |
| 237 | #define TAG_IS_AVCI(tag) \ |
| 238 | ((tag) == MKTAG('a', 'i', '5', 'p') || \ |
| 239 | (tag) == MKTAG('a', 'i', '5', 'q') || \ |
| 240 | (tag) == MKTAG('a', 'i', '5', '2') || \ |
| 241 | (tag) == MKTAG('a', 'i', '5', '3') || \ |
| 242 | (tag) == MKTAG('a', 'i', '5', '5') || \ |
| 243 | (tag) == MKTAG('a', 'i', '5', '6') || \ |
| 244 | (tag) == MKTAG('a', 'i', '1', 'p') || \ |
| 245 | (tag) == MKTAG('a', 'i', '1', 'q') || \ |
| 246 | (tag) == MKTAG('a', 'i', '1', '2') || \ |
| 247 | (tag) == MKTAG('a', 'i', '1', '3') || \ |
| 248 | (tag) == MKTAG('a', 'i', '1', '5') || \ |
| 249 | (tag) == MKTAG('a', 'i', '1', '6') || \ |
| 250 | (tag) == MKTAG('a', 'i', 'v', 'x') || \ |
| 251 | (tag) == MKTAG('A', 'V', 'i', 'n')) |
| 252 | |
| 253 | |
| 254 | int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb); |
| 255 | enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags); |
| 256 | |
| 257 | int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries); |
| 258 | void ff_mov_write_chan(AVIOContext *pb, int64_t channel_layout); |
| 259 | |
| 260 | #define FF_MOV_FLAG_MFRA_AUTO -1 |
| 261 | #define FF_MOV_FLAG_MFRA_DTS 1 |
| 262 | #define FF_MOV_FLAG_MFRA_PTS 2 |
| 263 | |
| 264 | #endif /* AVFORMAT_ISOM_H */ |