| 1 | /* |
| 2 | * MOV demuxer |
| 3 | * Copyright (c) 2001 Fabrice Bellard |
| 4 | * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com> |
| 5 | * |
| 6 | * first version by Francois Revol <revol@free.fr> |
| 7 | * seek function by Gael Chardon <gael.dev@4now.net> |
| 8 | * |
| 9 | * This file is part of FFmpeg. |
| 10 | * |
| 11 | * FFmpeg is free software; you can redistribute it and/or |
| 12 | * modify it under the terms of the GNU Lesser General Public |
| 13 | * License as published by the Free Software Foundation; either |
| 14 | * version 2.1 of the License, or (at your option) any later version. |
| 15 | * |
| 16 | * FFmpeg is distributed in the hope that it will be useful, |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 19 | * Lesser General Public License for more details. |
| 20 | * |
| 21 | * You should have received a copy of the GNU Lesser General Public |
| 22 | * License along with FFmpeg; if not, write to the Free Software |
| 23 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 24 | */ |
| 25 | |
| 26 | #include <inttypes.h> |
| 27 | #include <limits.h> |
| 28 | #include <stdint.h> |
| 29 | |
| 30 | #include "libavutil/attributes.h" |
| 31 | #include "libavutil/channel_layout.h" |
| 32 | #include "libavutil/display.h" |
| 33 | #include "libavutil/intreadwrite.h" |
| 34 | #include "libavutil/intfloat.h" |
| 35 | #include "libavutil/mathematics.h" |
| 36 | #include "libavutil/time_internal.h" |
| 37 | #include "libavutil/avstring.h" |
| 38 | #include "libavutil/dict.h" |
| 39 | #include "libavutil/opt.h" |
| 40 | #include "libavutil/timecode.h" |
| 41 | #include "libavcodec/ac3tab.h" |
| 42 | #include "avformat.h" |
| 43 | #include "internal.h" |
| 44 | #include "avio_internal.h" |
| 45 | #include "riff.h" |
| 46 | #include "isom.h" |
| 47 | #include "libavcodec/get_bits.h" |
| 48 | #include "id3v1.h" |
| 49 | #include "mov_chan.h" |
| 50 | #include "replaygain.h" |
| 51 | |
| 52 | #if CONFIG_ZLIB |
| 53 | #include <zlib.h> |
| 54 | #endif |
| 55 | |
| 56 | #include "qtpalette.h" |
| 57 | |
| 58 | |
| 59 | #undef NDEBUG |
| 60 | #include <assert.h> |
| 61 | |
| 62 | /* those functions parse an atom */ |
| 63 | /* links atom IDs to parse functions */ |
| 64 | typedef struct MOVParseTableEntry { |
| 65 | uint32_t type; |
| 66 | int (*parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom); |
| 67 | } MOVParseTableEntry; |
| 68 | |
| 69 | static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom); |
| 70 | static int mov_read_mfra(MOVContext *c, AVIOContext *f); |
| 71 | |
| 72 | static int mov_metadata_track_or_disc_number(MOVContext *c, AVIOContext *pb, |
| 73 | unsigned len, const char *key) |
| 74 | { |
| 75 | char buf[16]; |
| 76 | |
| 77 | short current, total = 0; |
| 78 | avio_rb16(pb); // unknown |
| 79 | current = avio_rb16(pb); |
| 80 | if (len >= 6) |
| 81 | total = avio_rb16(pb); |
| 82 | if (!total) |
| 83 | snprintf(buf, sizeof(buf), "%d", current); |
| 84 | else |
| 85 | snprintf(buf, sizeof(buf), "%d/%d", current, total); |
| 86 | c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED; |
| 87 | av_dict_set(&c->fc->metadata, key, buf, 0); |
| 88 | |
| 89 | return 0; |
| 90 | } |
| 91 | |
| 92 | static int mov_metadata_int8_bypass_padding(MOVContext *c, AVIOContext *pb, |
| 93 | unsigned len, const char *key) |
| 94 | { |
| 95 | /* bypass padding bytes */ |
| 96 | avio_r8(pb); |
| 97 | avio_r8(pb); |
| 98 | avio_r8(pb); |
| 99 | |
| 100 | c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED; |
| 101 | av_dict_set_int(&c->fc->metadata, key, avio_r8(pb), 0); |
| 102 | |
| 103 | return 0; |
| 104 | } |
| 105 | |
| 106 | static int mov_metadata_int8_no_padding(MOVContext *c, AVIOContext *pb, |
| 107 | unsigned len, const char *key) |
| 108 | { |
| 109 | c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED; |
| 110 | av_dict_set_int(&c->fc->metadata, key, avio_r8(pb), 0); |
| 111 | |
| 112 | return 0; |
| 113 | } |
| 114 | |
| 115 | static int mov_metadata_gnre(MOVContext *c, AVIOContext *pb, |
| 116 | unsigned len, const char *key) |
| 117 | { |
| 118 | short genre; |
| 119 | |
| 120 | avio_r8(pb); // unknown |
| 121 | |
| 122 | genre = avio_r8(pb); |
| 123 | if (genre < 1 || genre > ID3v1_GENRE_MAX) |
| 124 | return 0; |
| 125 | c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED; |
| 126 | av_dict_set(&c->fc->metadata, key, ff_id3v1_genre_str[genre-1], 0); |
| 127 | |
| 128 | return 0; |
| 129 | } |
| 130 | |
| 131 | static const uint32_t mac_to_unicode[128] = { |
| 132 | 0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1, |
| 133 | 0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8, |
| 134 | 0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3, |
| 135 | 0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC, |
| 136 | 0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF, |
| 137 | 0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8, |
| 138 | 0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211, |
| 139 | 0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8, |
| 140 | 0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB, |
| 141 | 0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153, |
| 142 | 0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA, |
| 143 | 0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02, |
| 144 | 0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1, |
| 145 | 0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4, |
| 146 | 0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC, |
| 147 | 0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7, |
| 148 | }; |
| 149 | |
| 150 | static int mov_read_mac_string(MOVContext *c, AVIOContext *pb, int len, |
| 151 | char *dst, int dstlen) |
| 152 | { |
| 153 | char *p = dst; |
| 154 | char *end = dst+dstlen-1; |
| 155 | int i; |
| 156 | |
| 157 | for (i = 0; i < len; i++) { |
| 158 | uint8_t t, c = avio_r8(pb); |
| 159 | if (c < 0x80 && p < end) |
| 160 | *p++ = c; |
| 161 | else if (p < end) |
| 162 | PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;); |
| 163 | } |
| 164 | *p = 0; |
| 165 | return p - dst; |
| 166 | } |
| 167 | |
| 168 | static int mov_read_covr(MOVContext *c, AVIOContext *pb, int type, int len) |
| 169 | { |
| 170 | AVPacket pkt; |
| 171 | AVStream *st; |
| 172 | MOVStreamContext *sc; |
| 173 | enum AVCodecID id; |
| 174 | int ret; |
| 175 | |
| 176 | switch (type) { |
| 177 | case 0xd: id = AV_CODEC_ID_MJPEG; break; |
| 178 | case 0xe: id = AV_CODEC_ID_PNG; break; |
| 179 | case 0x1b: id = AV_CODEC_ID_BMP; break; |
| 180 | default: |
| 181 | av_log(c->fc, AV_LOG_WARNING, "Unknown cover type: 0x%x.\n", type); |
| 182 | avio_skip(pb, len); |
| 183 | return 0; |
| 184 | } |
| 185 | |
| 186 | st = avformat_new_stream(c->fc, NULL); |
| 187 | if (!st) |
| 188 | return AVERROR(ENOMEM); |
| 189 | sc = av_mallocz(sizeof(*sc)); |
| 190 | if (!sc) |
| 191 | return AVERROR(ENOMEM); |
| 192 | st->priv_data = sc; |
| 193 | |
| 194 | ret = av_get_packet(pb, &pkt, len); |
| 195 | if (ret < 0) |
| 196 | return ret; |
| 197 | |
| 198 | st->disposition |= AV_DISPOSITION_ATTACHED_PIC; |
| 199 | |
| 200 | st->attached_pic = pkt; |
| 201 | st->attached_pic.stream_index = st->index; |
| 202 | st->attached_pic.flags |= AV_PKT_FLAG_KEY; |
| 203 | |
| 204 | st->codec->codec_type = AVMEDIA_TYPE_VIDEO; |
| 205 | st->codec->codec_id = id; |
| 206 | |
| 207 | return 0; |
| 208 | } |
| 209 | |
| 210 | static int mov_metadata_raw(MOVContext *c, AVIOContext *pb, |
| 211 | unsigned len, const char *key) |
| 212 | { |
| 213 | char *value = av_malloc(len + 1); |
| 214 | if (!value) |
| 215 | return AVERROR(ENOMEM); |
| 216 | avio_read(pb, value, len); |
| 217 | value[len] = 0; |
| 218 | return av_dict_set(&c->fc->metadata, key, value, AV_DICT_DONT_STRDUP_VAL); |
| 219 | } |
| 220 | |
| 221 | static int mov_metadata_loci(MOVContext *c, AVIOContext *pb, unsigned len) |
| 222 | { |
| 223 | char language[4] = { 0 }; |
| 224 | char buf[100]; |
| 225 | uint16_t langcode = 0; |
| 226 | double longitude, latitude; |
| 227 | const char *key = "location"; |
| 228 | |
| 229 | if (len < 4 + 2 + 1 + 1 + 4 + 4 + 4) |
| 230 | return AVERROR_INVALIDDATA; |
| 231 | |
| 232 | avio_skip(pb, 4); // version+flags |
| 233 | langcode = avio_rb16(pb); |
| 234 | ff_mov_lang_to_iso639(langcode, language); |
| 235 | len -= 6; |
| 236 | |
| 237 | len -= avio_get_str(pb, len, buf, sizeof(buf)); // place name |
| 238 | if (len < 1) |
| 239 | return AVERROR_INVALIDDATA; |
| 240 | avio_skip(pb, 1); // role |
| 241 | len -= 1; |
| 242 | |
| 243 | if (len < 14) |
| 244 | return AVERROR_INVALIDDATA; |
| 245 | longitude = ((int32_t) avio_rb32(pb)) / (float) (1 << 16); |
| 246 | latitude = ((int32_t) avio_rb32(pb)) / (float) (1 << 16); |
| 247 | |
| 248 | // Try to output in the same format as the ?xyz field |
| 249 | snprintf(buf, sizeof(buf), "%+08.4f%+09.4f/", latitude, longitude); |
| 250 | if (*language && strcmp(language, "und")) { |
| 251 | char key2[16]; |
| 252 | snprintf(key2, sizeof(key2), "%s-%s", key, language); |
| 253 | av_dict_set(&c->fc->metadata, key2, buf, 0); |
| 254 | } |
| 255 | c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED; |
| 256 | return av_dict_set(&c->fc->metadata, key, buf, 0); |
| 257 | } |
| 258 | |
| 259 | static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 260 | { |
| 261 | char tmp_key[5]; |
| 262 | char key2[32], language[4] = {0}; |
| 263 | char *str = NULL; |
| 264 | const char *key = NULL; |
| 265 | uint16_t langcode = 0; |
| 266 | uint32_t data_type = 0, str_size, str_size_alloc; |
| 267 | int (*parse)(MOVContext*, AVIOContext*, unsigned, const char*) = NULL; |
| 268 | |
| 269 | switch (atom.type) { |
| 270 | case MKTAG(0xa9,'n','a','m'): key = "title"; break; |
| 271 | case MKTAG(0xa9,'a','u','t'): |
| 272 | case MKTAG(0xa9,'A','R','T'): key = "artist"; break; |
| 273 | case MKTAG( 'a','A','R','T'): key = "album_artist"; break; |
| 274 | case MKTAG(0xa9,'w','r','t'): key = "composer"; break; |
| 275 | case MKTAG( 'c','p','i','l'): key = "compilation"; |
| 276 | parse = mov_metadata_int8_no_padding; break; |
| 277 | case MKTAG( 'c','p','r','t'): |
| 278 | case MKTAG(0xa9,'c','p','y'): key = "copyright"; break; |
| 279 | case MKTAG(0xa9,'g','r','p'): key = "grouping"; break; |
| 280 | case MKTAG(0xa9,'l','y','r'): key = "lyrics"; break; |
| 281 | case MKTAG(0xa9,'c','m','t'): |
| 282 | case MKTAG(0xa9,'i','n','f'): key = "comment"; break; |
| 283 | case MKTAG(0xa9,'a','l','b'): key = "album"; break; |
| 284 | case MKTAG(0xa9,'d','a','y'): key = "date"; break; |
| 285 | case MKTAG(0xa9,'g','e','n'): key = "genre"; break; |
| 286 | case MKTAG( 'g','n','r','e'): key = "genre"; |
| 287 | parse = mov_metadata_gnre; break; |
| 288 | case MKTAG(0xa9,'t','o','o'): |
| 289 | case MKTAG(0xa9,'s','w','r'): key = "encoder"; break; |
| 290 | case MKTAG(0xa9,'e','n','c'): key = "encoder"; break; |
| 291 | case MKTAG(0xa9,'m','a','k'): key = "make"; break; |
| 292 | case MKTAG(0xa9,'m','o','d'): key = "model"; break; |
| 293 | case MKTAG(0xa9,'x','y','z'): key = "location"; break; |
| 294 | case MKTAG( 'd','e','s','c'): key = "description";break; |
| 295 | case MKTAG( 'l','d','e','s'): key = "synopsis"; break; |
| 296 | case MKTAG( 't','v','s','h'): key = "show"; break; |
| 297 | case MKTAG( 't','v','e','n'): key = "episode_id";break; |
| 298 | case MKTAG( 't','v','n','n'): key = "network"; break; |
| 299 | case MKTAG( 't','r','k','n'): key = "track"; |
| 300 | parse = mov_metadata_track_or_disc_number; break; |
| 301 | case MKTAG( 'd','i','s','k'): key = "disc"; |
| 302 | parse = mov_metadata_track_or_disc_number; break; |
| 303 | case MKTAG( 't','v','e','s'): key = "episode_sort"; |
| 304 | parse = mov_metadata_int8_bypass_padding; break; |
| 305 | case MKTAG( 't','v','s','n'): key = "season_number"; |
| 306 | parse = mov_metadata_int8_bypass_padding; break; |
| 307 | case MKTAG( 's','t','i','k'): key = "media_type"; |
| 308 | parse = mov_metadata_int8_no_padding; break; |
| 309 | case MKTAG( 'h','d','v','d'): key = "hd_video"; |
| 310 | parse = mov_metadata_int8_no_padding; break; |
| 311 | case MKTAG( 'p','g','a','p'): key = "gapless_playback"; |
| 312 | parse = mov_metadata_int8_no_padding; break; |
| 313 | case MKTAG( '@','P','R','M'): |
| 314 | return mov_metadata_raw(c, pb, atom.size, "premiere_version"); |
| 315 | case MKTAG( '@','P','R','Q'): |
| 316 | return mov_metadata_raw(c, pb, atom.size, "quicktime_version"); |
| 317 | case MKTAG( 'l','o','c','i'): |
| 318 | return mov_metadata_loci(c, pb, atom.size); |
| 319 | case MKTAG( 'X','M','P','_'): |
| 320 | return mov_metadata_raw(c, pb, atom.size, "xmp"); |
| 321 | } |
| 322 | |
| 323 | if (c->itunes_metadata && atom.size > 8) { |
| 324 | int data_size = avio_rb32(pb); |
| 325 | int tag = avio_rl32(pb); |
| 326 | if (tag == MKTAG('d','a','t','a')) { |
| 327 | data_type = avio_rb32(pb); // type |
| 328 | avio_rb32(pb); // unknown |
| 329 | str_size = data_size - 16; |
| 330 | atom.size -= 16; |
| 331 | |
| 332 | if (atom.type == MKTAG('c', 'o', 'v', 'r')) { |
| 333 | int ret = mov_read_covr(c, pb, data_type, str_size); |
| 334 | if (ret < 0) { |
| 335 | av_log(c->fc, AV_LOG_ERROR, "Error parsing cover art.\n"); |
| 336 | } |
| 337 | return ret; |
| 338 | } |
| 339 | } else return 0; |
| 340 | } else if (atom.size > 4 && key && !c->itunes_metadata) { |
| 341 | str_size = avio_rb16(pb); // string length |
| 342 | langcode = avio_rb16(pb); |
| 343 | ff_mov_lang_to_iso639(langcode, language); |
| 344 | atom.size -= 4; |
| 345 | } else |
| 346 | str_size = atom.size; |
| 347 | |
| 348 | if (c->export_all && !key) { |
| 349 | snprintf(tmp_key, 5, "%.4s", (char*)&atom.type); |
| 350 | key = tmp_key; |
| 351 | } |
| 352 | |
| 353 | if (!key) |
| 354 | return 0; |
| 355 | if (atom.size < 0) |
| 356 | return AVERROR_INVALIDDATA; |
| 357 | |
| 358 | str_size_alloc = str_size << 1; // worst-case requirement for output string in case of utf8 coded input |
| 359 | str = av_malloc(str_size_alloc); |
| 360 | if (!str) |
| 361 | return AVERROR(ENOMEM); |
| 362 | |
| 363 | if (parse) |
| 364 | parse(c, pb, str_size, key); |
| 365 | else { |
| 366 | if (data_type == 3 || (data_type == 0 && (langcode < 0x400 || langcode == 0x7fff))) { // MAC Encoded |
| 367 | mov_read_mac_string(c, pb, str_size, str, str_size_alloc); |
| 368 | } else { |
| 369 | int ret = avio_read(pb, str, str_size); |
| 370 | if (ret != str_size) { |
| 371 | av_freep(&str); |
| 372 | return ret < 0 ? ret : AVERROR_INVALIDDATA; |
| 373 | } |
| 374 | str[str_size] = 0; |
| 375 | } |
| 376 | c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED; |
| 377 | av_dict_set(&c->fc->metadata, key, str, 0); |
| 378 | if (*language && strcmp(language, "und")) { |
| 379 | snprintf(key2, sizeof(key2), "%s-%s", key, language); |
| 380 | av_dict_set(&c->fc->metadata, key2, str, 0); |
| 381 | } |
| 382 | } |
| 383 | av_dlog(c->fc, "lang \"%3s\" ", language); |
| 384 | av_dlog(c->fc, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n", |
| 385 | key, str, (char*)&atom.type, str_size_alloc, atom.size); |
| 386 | |
| 387 | av_freep(&str); |
| 388 | return 0; |
| 389 | } |
| 390 | |
| 391 | static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 392 | { |
| 393 | int64_t start; |
| 394 | int i, nb_chapters, str_len, version; |
| 395 | char str[256+1]; |
| 396 | |
| 397 | if ((atom.size -= 5) < 0) |
| 398 | return 0; |
| 399 | |
| 400 | version = avio_r8(pb); |
| 401 | avio_rb24(pb); |
| 402 | if (version) |
| 403 | avio_rb32(pb); // ??? |
| 404 | nb_chapters = avio_r8(pb); |
| 405 | |
| 406 | for (i = 0; i < nb_chapters; i++) { |
| 407 | if (atom.size < 9) |
| 408 | return 0; |
| 409 | |
| 410 | start = avio_rb64(pb); |
| 411 | str_len = avio_r8(pb); |
| 412 | |
| 413 | if ((atom.size -= 9+str_len) < 0) |
| 414 | return 0; |
| 415 | |
| 416 | avio_read(pb, str, str_len); |
| 417 | str[str_len] = 0; |
| 418 | avpriv_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str); |
| 419 | } |
| 420 | return 0; |
| 421 | } |
| 422 | |
| 423 | #define MIN_DATA_ENTRY_BOX_SIZE 12 |
| 424 | static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 425 | { |
| 426 | AVStream *st; |
| 427 | MOVStreamContext *sc; |
| 428 | int entries, i, j; |
| 429 | |
| 430 | if (c->fc->nb_streams < 1) |
| 431 | return 0; |
| 432 | st = c->fc->streams[c->fc->nb_streams-1]; |
| 433 | sc = st->priv_data; |
| 434 | |
| 435 | avio_rb32(pb); // version + flags |
| 436 | entries = avio_rb32(pb); |
| 437 | if (entries > (atom.size - 1) / MIN_DATA_ENTRY_BOX_SIZE + 1 || |
| 438 | entries >= UINT_MAX / sizeof(*sc->drefs)) |
| 439 | return AVERROR_INVALIDDATA; |
| 440 | av_free(sc->drefs); |
| 441 | sc->drefs_count = 0; |
| 442 | sc->drefs = av_mallocz(entries * sizeof(*sc->drefs)); |
| 443 | if (!sc->drefs) |
| 444 | return AVERROR(ENOMEM); |
| 445 | sc->drefs_count = entries; |
| 446 | |
| 447 | for (i = 0; i < sc->drefs_count; i++) { |
| 448 | MOVDref *dref = &sc->drefs[i]; |
| 449 | uint32_t size = avio_rb32(pb); |
| 450 | int64_t next = avio_tell(pb) + size - 4; |
| 451 | |
| 452 | if (size < 12) |
| 453 | return AVERROR_INVALIDDATA; |
| 454 | |
| 455 | dref->type = avio_rl32(pb); |
| 456 | avio_rb32(pb); // version + flags |
| 457 | av_dlog(c->fc, "type %.4s size %d\n", (char*)&dref->type, size); |
| 458 | |
| 459 | if (dref->type == MKTAG('a','l','i','s') && size > 150) { |
| 460 | /* macintosh alias record */ |
| 461 | uint16_t volume_len, len; |
| 462 | int16_t type; |
| 463 | |
| 464 | avio_skip(pb, 10); |
| 465 | |
| 466 | volume_len = avio_r8(pb); |
| 467 | volume_len = FFMIN(volume_len, 27); |
| 468 | avio_read(pb, dref->volume, 27); |
| 469 | dref->volume[volume_len] = 0; |
| 470 | av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len); |
| 471 | |
| 472 | avio_skip(pb, 12); |
| 473 | |
| 474 | len = avio_r8(pb); |
| 475 | len = FFMIN(len, 63); |
| 476 | avio_read(pb, dref->filename, 63); |
| 477 | dref->filename[len] = 0; |
| 478 | av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len); |
| 479 | |
| 480 | avio_skip(pb, 16); |
| 481 | |
| 482 | /* read next level up_from_alias/down_to_target */ |
| 483 | dref->nlvl_from = avio_rb16(pb); |
| 484 | dref->nlvl_to = avio_rb16(pb); |
| 485 | av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n", |
| 486 | dref->nlvl_from, dref->nlvl_to); |
| 487 | |
| 488 | avio_skip(pb, 16); |
| 489 | |
| 490 | for (type = 0; type != -1 && avio_tell(pb) < next; ) { |
| 491 | if(avio_feof(pb)) |
| 492 | return AVERROR_EOF; |
| 493 | type = avio_rb16(pb); |
| 494 | len = avio_rb16(pb); |
| 495 | av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len); |
| 496 | if (len&1) |
| 497 | len += 1; |
| 498 | if (type == 2) { // absolute path |
| 499 | av_free(dref->path); |
| 500 | dref->path = av_mallocz(len+1); |
| 501 | if (!dref->path) |
| 502 | return AVERROR(ENOMEM); |
| 503 | avio_read(pb, dref->path, len); |
| 504 | if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) { |
| 505 | len -= volume_len; |
| 506 | memmove(dref->path, dref->path+volume_len, len); |
| 507 | dref->path[len] = 0; |
| 508 | } |
| 509 | for (j = 0; j < len; j++) |
| 510 | if (dref->path[j] == ':') |
| 511 | dref->path[j] = '/'; |
| 512 | av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path); |
| 513 | } else if (type == 0) { // directory name |
| 514 | av_free(dref->dir); |
| 515 | dref->dir = av_malloc(len+1); |
| 516 | if (!dref->dir) |
| 517 | return AVERROR(ENOMEM); |
| 518 | if (avio_read(pb, dref->dir, len) != len) |
| 519 | return AVERROR_INVALIDDATA; |
| 520 | dref->dir[len] = 0; |
| 521 | for (j = 0; j < len; j++) |
| 522 | if (dref->dir[j] == ':') |
| 523 | dref->dir[j] = '/'; |
| 524 | av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir); |
| 525 | } else |
| 526 | avio_skip(pb, len); |
| 527 | } |
| 528 | } |
| 529 | avio_seek(pb, next, SEEK_SET); |
| 530 | } |
| 531 | return 0; |
| 532 | } |
| 533 | |
| 534 | static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 535 | { |
| 536 | AVStream *st; |
| 537 | uint32_t type; |
| 538 | uint32_t av_unused ctype; |
| 539 | int title_size; |
| 540 | char *title_str; |
| 541 | |
| 542 | if (c->fc->nb_streams < 1) // meta before first trak |
| 543 | return 0; |
| 544 | |
| 545 | st = c->fc->streams[c->fc->nb_streams-1]; |
| 546 | |
| 547 | avio_r8(pb); /* version */ |
| 548 | avio_rb24(pb); /* flags */ |
| 549 | |
| 550 | /* component type */ |
| 551 | ctype = avio_rl32(pb); |
| 552 | type = avio_rl32(pb); /* component subtype */ |
| 553 | |
| 554 | av_dlog(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype); |
| 555 | av_dlog(c->fc, "stype= %.4s\n", (char*)&type); |
| 556 | |
| 557 | if (type == MKTAG('v','i','d','e')) |
| 558 | st->codec->codec_type = AVMEDIA_TYPE_VIDEO; |
| 559 | else if (type == MKTAG('s','o','u','n')) |
| 560 | st->codec->codec_type = AVMEDIA_TYPE_AUDIO; |
| 561 | else if (type == MKTAG('m','1','a',' ')) |
| 562 | st->codec->codec_id = AV_CODEC_ID_MP2; |
| 563 | else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p'))) |
| 564 | st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE; |
| 565 | |
| 566 | avio_rb32(pb); /* component manufacture */ |
| 567 | avio_rb32(pb); /* component flags */ |
| 568 | avio_rb32(pb); /* component flags mask */ |
| 569 | |
| 570 | title_size = atom.size - 24; |
| 571 | if (title_size > 0) { |
| 572 | title_str = av_malloc(title_size + 1); /* Add null terminator */ |
| 573 | if (!title_str) |
| 574 | return AVERROR(ENOMEM); |
| 575 | avio_read(pb, title_str, title_size); |
| 576 | title_str[title_size] = 0; |
| 577 | if (title_str[0]) |
| 578 | av_dict_set(&st->metadata, "handler_name", title_str + |
| 579 | (!c->isom && title_str[0] == title_size - 1), 0); |
| 580 | av_freep(&title_str); |
| 581 | } |
| 582 | |
| 583 | return 0; |
| 584 | } |
| 585 | |
| 586 | int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb) |
| 587 | { |
| 588 | AVStream *st; |
| 589 | int tag; |
| 590 | |
| 591 | if (fc->nb_streams < 1) |
| 592 | return 0; |
| 593 | st = fc->streams[fc->nb_streams-1]; |
| 594 | |
| 595 | avio_rb32(pb); /* version + flags */ |
| 596 | ff_mp4_read_descr(fc, pb, &tag); |
| 597 | if (tag == MP4ESDescrTag) { |
| 598 | ff_mp4_parse_es_descr(pb, NULL); |
| 599 | } else |
| 600 | avio_rb16(pb); /* ID */ |
| 601 | |
| 602 | ff_mp4_read_descr(fc, pb, &tag); |
| 603 | if (tag == MP4DecConfigDescrTag) |
| 604 | ff_mp4_read_dec_config_descr(fc, st, pb); |
| 605 | return 0; |
| 606 | } |
| 607 | |
| 608 | static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 609 | { |
| 610 | return ff_mov_read_esds(c->fc, pb); |
| 611 | } |
| 612 | |
| 613 | static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 614 | { |
| 615 | AVStream *st; |
| 616 | int ac3info, acmod, lfeon, bsmod; |
| 617 | |
| 618 | if (c->fc->nb_streams < 1) |
| 619 | return 0; |
| 620 | st = c->fc->streams[c->fc->nb_streams-1]; |
| 621 | |
| 622 | ac3info = avio_rb24(pb); |
| 623 | bsmod = (ac3info >> 14) & 0x7; |
| 624 | acmod = (ac3info >> 11) & 0x7; |
| 625 | lfeon = (ac3info >> 10) & 0x1; |
| 626 | st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon; |
| 627 | st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod]; |
| 628 | if (lfeon) |
| 629 | st->codec->channel_layout |= AV_CH_LOW_FREQUENCY; |
| 630 | st->codec->audio_service_type = bsmod; |
| 631 | if (st->codec->channels > 1 && bsmod == 0x7) |
| 632 | st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE; |
| 633 | |
| 634 | return 0; |
| 635 | } |
| 636 | |
| 637 | static int mov_read_dec3(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 638 | { |
| 639 | AVStream *st; |
| 640 | int eac3info, acmod, lfeon, bsmod; |
| 641 | |
| 642 | if (c->fc->nb_streams < 1) |
| 643 | return 0; |
| 644 | st = c->fc->streams[c->fc->nb_streams-1]; |
| 645 | |
| 646 | /* No need to parse fields for additional independent substreams and its |
| 647 | * associated dependent substreams since libavcodec's E-AC-3 decoder |
| 648 | * does not support them yet. */ |
| 649 | avio_rb16(pb); /* data_rate and num_ind_sub */ |
| 650 | eac3info = avio_rb24(pb); |
| 651 | bsmod = (eac3info >> 12) & 0x1f; |
| 652 | acmod = (eac3info >> 9) & 0x7; |
| 653 | lfeon = (eac3info >> 8) & 0x1; |
| 654 | st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod]; |
| 655 | if (lfeon) |
| 656 | st->codec->channel_layout |= AV_CH_LOW_FREQUENCY; |
| 657 | st->codec->channels = av_get_channel_layout_nb_channels(st->codec->channel_layout); |
| 658 | st->codec->audio_service_type = bsmod; |
| 659 | if (st->codec->channels > 1 && bsmod == 0x7) |
| 660 | st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE; |
| 661 | |
| 662 | return 0; |
| 663 | } |
| 664 | |
| 665 | static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 666 | { |
| 667 | AVStream *st; |
| 668 | |
| 669 | if (c->fc->nb_streams < 1) |
| 670 | return 0; |
| 671 | st = c->fc->streams[c->fc->nb_streams-1]; |
| 672 | |
| 673 | if (atom.size < 16) |
| 674 | return 0; |
| 675 | |
| 676 | /* skip version and flags */ |
| 677 | avio_skip(pb, 4); |
| 678 | |
| 679 | ff_mov_read_chan(c->fc, pb, st, atom.size - 4); |
| 680 | |
| 681 | return 0; |
| 682 | } |
| 683 | |
| 684 | static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 685 | { |
| 686 | AVStream *st; |
| 687 | int ret; |
| 688 | |
| 689 | if (c->fc->nb_streams < 1) |
| 690 | return 0; |
| 691 | st = c->fc->streams[c->fc->nb_streams-1]; |
| 692 | |
| 693 | if ((ret = ff_get_wav_header(pb, st->codec, atom.size)) < 0) |
| 694 | av_log(c->fc, AV_LOG_WARNING, "get_wav_header failed\n"); |
| 695 | |
| 696 | return ret; |
| 697 | } |
| 698 | |
| 699 | static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 700 | { |
| 701 | const int num = avio_rb32(pb); |
| 702 | const int den = avio_rb32(pb); |
| 703 | AVStream *st; |
| 704 | |
| 705 | if (c->fc->nb_streams < 1) |
| 706 | return 0; |
| 707 | st = c->fc->streams[c->fc->nb_streams-1]; |
| 708 | |
| 709 | if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default |
| 710 | (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) { |
| 711 | av_log(c->fc, AV_LOG_WARNING, |
| 712 | "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n", |
| 713 | st->sample_aspect_ratio.num, st->sample_aspect_ratio.den, |
| 714 | num, den); |
| 715 | } else if (den != 0) { |
| 716 | st->sample_aspect_ratio.num = num; |
| 717 | st->sample_aspect_ratio.den = den; |
| 718 | } |
| 719 | return 0; |
| 720 | } |
| 721 | |
| 722 | /* this atom contains actual media data */ |
| 723 | static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 724 | { |
| 725 | if (atom.size == 0) /* wrong one (MP4) */ |
| 726 | return 0; |
| 727 | c->found_mdat=1; |
| 728 | return 0; /* now go for moov */ |
| 729 | } |
| 730 | |
| 731 | /* read major brand, minor version and compatible brands and store them as metadata */ |
| 732 | static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 733 | { |
| 734 | uint32_t minor_ver; |
| 735 | int comp_brand_size; |
| 736 | char* comp_brands_str; |
| 737 | uint8_t type[5] = {0}; |
| 738 | |
| 739 | avio_read(pb, type, 4); |
| 740 | if (strcmp(type, "qt ")) |
| 741 | c->isom = 1; |
| 742 | av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type); |
| 743 | av_dict_set(&c->fc->metadata, "major_brand", type, 0); |
| 744 | minor_ver = avio_rb32(pb); /* minor version */ |
| 745 | av_dict_set_int(&c->fc->metadata, "minor_version", minor_ver, 0); |
| 746 | |
| 747 | comp_brand_size = atom.size - 8; |
| 748 | if (comp_brand_size < 0) |
| 749 | return AVERROR_INVALIDDATA; |
| 750 | comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */ |
| 751 | if (!comp_brands_str) |
| 752 | return AVERROR(ENOMEM); |
| 753 | avio_read(pb, comp_brands_str, comp_brand_size); |
| 754 | comp_brands_str[comp_brand_size] = 0; |
| 755 | av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0); |
| 756 | av_freep(&comp_brands_str); |
| 757 | |
| 758 | return 0; |
| 759 | } |
| 760 | |
| 761 | /* this atom should contain all header atoms */ |
| 762 | static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 763 | { |
| 764 | int ret; |
| 765 | |
| 766 | if (c->found_moov) { |
| 767 | av_log(c->fc, AV_LOG_WARNING, "Found duplicated MOOV Atom. Skipped it\n"); |
| 768 | avio_skip(pb, atom.size); |
| 769 | return 0; |
| 770 | } |
| 771 | |
| 772 | if ((ret = mov_read_default(c, pb, atom)) < 0) |
| 773 | return ret; |
| 774 | /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */ |
| 775 | /* so we don't parse the whole file if over a network */ |
| 776 | c->found_moov=1; |
| 777 | return 0; /* now go for mdat */ |
| 778 | } |
| 779 | |
| 780 | static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 781 | { |
| 782 | if (!c->has_looked_for_mfra && c->use_mfra_for > 0) { |
| 783 | c->has_looked_for_mfra = 1; |
| 784 | if (pb->seekable) { |
| 785 | int ret; |
| 786 | av_log(c->fc, AV_LOG_VERBOSE, "stream has moof boxes, will look " |
| 787 | "for a mfra\n"); |
| 788 | if ((ret = mov_read_mfra(c, pb)) < 0) { |
| 789 | av_log(c->fc, AV_LOG_VERBOSE, "found a moof box but failed to " |
| 790 | "read the mfra (may be a live ismv)\n"); |
| 791 | } |
| 792 | } else { |
| 793 | av_log(c->fc, AV_LOG_VERBOSE, "found a moof box but stream is not " |
| 794 | "seekable, can not look for mfra\n"); |
| 795 | } |
| 796 | } |
| 797 | c->fragment.moof_offset = c->fragment.implicit_offset = avio_tell(pb) - 8; |
| 798 | av_dlog(c->fc, "moof offset %"PRIx64"\n", c->fragment.moof_offset); |
| 799 | return mov_read_default(c, pb, atom); |
| 800 | } |
| 801 | |
| 802 | static void mov_metadata_creation_time(AVDictionary **metadata, int64_t time) |
| 803 | { |
| 804 | char buffer[32]; |
| 805 | if (time) { |
| 806 | struct tm *ptm, tmbuf; |
| 807 | time_t timet; |
| 808 | if(time >= 2082844800) |
| 809 | time -= 2082844800; /* seconds between 1904-01-01 and Epoch */ |
| 810 | timet = time; |
| 811 | ptm = gmtime_r(&timet, &tmbuf); |
| 812 | if (!ptm) return; |
| 813 | if (strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm)) |
| 814 | av_dict_set(metadata, "creation_time", buffer, 0); |
| 815 | } |
| 816 | } |
| 817 | |
| 818 | static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 819 | { |
| 820 | AVStream *st; |
| 821 | MOVStreamContext *sc; |
| 822 | int version; |
| 823 | char language[4] = {0}; |
| 824 | unsigned lang; |
| 825 | int64_t creation_time; |
| 826 | |
| 827 | if (c->fc->nb_streams < 1) |
| 828 | return 0; |
| 829 | st = c->fc->streams[c->fc->nb_streams-1]; |
| 830 | sc = st->priv_data; |
| 831 | |
| 832 | if (sc->time_scale) { |
| 833 | av_log(c->fc, AV_LOG_ERROR, "Multiple mdhd?\n"); |
| 834 | return AVERROR_INVALIDDATA; |
| 835 | } |
| 836 | |
| 837 | version = avio_r8(pb); |
| 838 | if (version > 1) { |
| 839 | avpriv_request_sample(c->fc, "Version %d", version); |
| 840 | return AVERROR_PATCHWELCOME; |
| 841 | } |
| 842 | avio_rb24(pb); /* flags */ |
| 843 | if (version == 1) { |
| 844 | creation_time = avio_rb64(pb); |
| 845 | avio_rb64(pb); |
| 846 | } else { |
| 847 | creation_time = avio_rb32(pb); |
| 848 | avio_rb32(pb); /* modification time */ |
| 849 | } |
| 850 | mov_metadata_creation_time(&st->metadata, creation_time); |
| 851 | |
| 852 | sc->time_scale = avio_rb32(pb); |
| 853 | st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */ |
| 854 | |
| 855 | lang = avio_rb16(pb); /* language */ |
| 856 | if (ff_mov_lang_to_iso639(lang, language)) |
| 857 | av_dict_set(&st->metadata, "language", language, 0); |
| 858 | avio_rb16(pb); /* quality */ |
| 859 | |
| 860 | return 0; |
| 861 | } |
| 862 | |
| 863 | static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 864 | { |
| 865 | int64_t creation_time; |
| 866 | int version = avio_r8(pb); /* version */ |
| 867 | avio_rb24(pb); /* flags */ |
| 868 | |
| 869 | if (version == 1) { |
| 870 | creation_time = avio_rb64(pb); |
| 871 | avio_rb64(pb); |
| 872 | } else { |
| 873 | creation_time = avio_rb32(pb); |
| 874 | avio_rb32(pb); /* modification time */ |
| 875 | } |
| 876 | mov_metadata_creation_time(&c->fc->metadata, creation_time); |
| 877 | c->time_scale = avio_rb32(pb); /* time scale */ |
| 878 | |
| 879 | av_dlog(c->fc, "time scale = %i\n", c->time_scale); |
| 880 | |
| 881 | c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */ |
| 882 | // set the AVCodecContext duration because the duration of individual tracks |
| 883 | // may be inaccurate |
| 884 | if (c->time_scale > 0 && !c->trex_data) |
| 885 | c->fc->duration = av_rescale(c->duration, AV_TIME_BASE, c->time_scale); |
| 886 | avio_rb32(pb); /* preferred scale */ |
| 887 | |
| 888 | avio_rb16(pb); /* preferred volume */ |
| 889 | |
| 890 | avio_skip(pb, 10); /* reserved */ |
| 891 | |
| 892 | avio_skip(pb, 36); /* display matrix */ |
| 893 | |
| 894 | avio_rb32(pb); /* preview time */ |
| 895 | avio_rb32(pb); /* preview duration */ |
| 896 | avio_rb32(pb); /* poster time */ |
| 897 | avio_rb32(pb); /* selection time */ |
| 898 | avio_rb32(pb); /* selection duration */ |
| 899 | avio_rb32(pb); /* current time */ |
| 900 | avio_rb32(pb); /* next track ID */ |
| 901 | return 0; |
| 902 | } |
| 903 | |
| 904 | static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 905 | { |
| 906 | AVStream *st; |
| 907 | int little_endian; |
| 908 | |
| 909 | if (c->fc->nb_streams < 1) |
| 910 | return 0; |
| 911 | st = c->fc->streams[c->fc->nb_streams-1]; |
| 912 | |
| 913 | little_endian = avio_rb16(pb) & 0xFF; |
| 914 | av_dlog(c->fc, "enda %d\n", little_endian); |
| 915 | if (little_endian == 1) { |
| 916 | switch (st->codec->codec_id) { |
| 917 | case AV_CODEC_ID_PCM_S24BE: |
| 918 | st->codec->codec_id = AV_CODEC_ID_PCM_S24LE; |
| 919 | break; |
| 920 | case AV_CODEC_ID_PCM_S32BE: |
| 921 | st->codec->codec_id = AV_CODEC_ID_PCM_S32LE; |
| 922 | break; |
| 923 | case AV_CODEC_ID_PCM_F32BE: |
| 924 | st->codec->codec_id = AV_CODEC_ID_PCM_F32LE; |
| 925 | break; |
| 926 | case AV_CODEC_ID_PCM_F64BE: |
| 927 | st->codec->codec_id = AV_CODEC_ID_PCM_F64LE; |
| 928 | break; |
| 929 | default: |
| 930 | break; |
| 931 | } |
| 932 | } |
| 933 | return 0; |
| 934 | } |
| 935 | |
| 936 | static int mov_read_colr(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 937 | { |
| 938 | AVStream *st; |
| 939 | char color_parameter_type[5] = { 0 }; |
| 940 | int color_primaries, color_trc, color_matrix; |
| 941 | |
| 942 | if (c->fc->nb_streams < 1) |
| 943 | return 0; |
| 944 | st = c->fc->streams[c->fc->nb_streams - 1]; |
| 945 | |
| 946 | avio_read(pb, color_parameter_type, 4); |
| 947 | if (strncmp(color_parameter_type, "nclx", 4) && |
| 948 | strncmp(color_parameter_type, "nclc", 4)) { |
| 949 | av_log(c->fc, AV_LOG_WARNING, "unsupported color_parameter_type %s\n", |
| 950 | color_parameter_type); |
| 951 | return 0; |
| 952 | } |
| 953 | |
| 954 | color_primaries = avio_rb16(pb); |
| 955 | color_trc = avio_rb16(pb); |
| 956 | color_matrix = avio_rb16(pb); |
| 957 | |
| 958 | av_dlog(c->fc, "%s: pri %d trc %d matrix %d", |
| 959 | color_parameter_type, color_primaries, color_trc, color_matrix); |
| 960 | |
| 961 | if (c->isom) { |
| 962 | uint8_t color_range = avio_r8(pb) >> 7; |
| 963 | av_dlog(c->fc, " full %"PRIu8"", color_range); |
| 964 | if (color_range) |
| 965 | st->codec->color_range = AVCOL_RANGE_JPEG; |
| 966 | else |
| 967 | st->codec->color_range = AVCOL_RANGE_MPEG; |
| 968 | /* 14496-12 references JPEG XR specs (rather than the more complete |
| 969 | * 23001-8) so some adjusting is required */ |
| 970 | if (color_primaries >= AVCOL_PRI_FILM) |
| 971 | color_primaries = AVCOL_PRI_UNSPECIFIED; |
| 972 | if ((color_trc >= AVCOL_TRC_LINEAR && |
| 973 | color_trc <= AVCOL_TRC_LOG_SQRT) || |
| 974 | color_trc >= AVCOL_TRC_BT2020_10) |
| 975 | color_trc = AVCOL_TRC_UNSPECIFIED; |
| 976 | if (color_matrix >= AVCOL_SPC_BT2020_NCL) |
| 977 | color_matrix = AVCOL_SPC_UNSPECIFIED; |
| 978 | st->codec->color_primaries = color_primaries; |
| 979 | st->codec->color_trc = color_trc; |
| 980 | st->codec->colorspace = color_matrix; |
| 981 | } else { |
| 982 | /* color primaries, Table 4-4 */ |
| 983 | switch (color_primaries) { |
| 984 | case 1: st->codec->color_primaries = AVCOL_PRI_BT709; break; |
| 985 | case 5: st->codec->color_primaries = AVCOL_PRI_SMPTE170M; break; |
| 986 | case 6: st->codec->color_primaries = AVCOL_PRI_SMPTE240M; break; |
| 987 | } |
| 988 | /* color transfer, Table 4-5 */ |
| 989 | switch (color_trc) { |
| 990 | case 1: st->codec->color_trc = AVCOL_TRC_BT709; break; |
| 991 | case 7: st->codec->color_trc = AVCOL_TRC_SMPTE240M; break; |
| 992 | } |
| 993 | /* color matrix, Table 4-6 */ |
| 994 | switch (color_matrix) { |
| 995 | case 1: st->codec->colorspace = AVCOL_SPC_BT709; break; |
| 996 | case 6: st->codec->colorspace = AVCOL_SPC_BT470BG; break; |
| 997 | case 7: st->codec->colorspace = AVCOL_SPC_SMPTE240M; break; |
| 998 | } |
| 999 | } |
| 1000 | av_dlog(c->fc, "\n"); |
| 1001 | |
| 1002 | return 0; |
| 1003 | } |
| 1004 | |
| 1005 | static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 1006 | { |
| 1007 | AVStream *st; |
| 1008 | unsigned mov_field_order; |
| 1009 | enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN; |
| 1010 | |
| 1011 | if (c->fc->nb_streams < 1) // will happen with jp2 files |
| 1012 | return 0; |
| 1013 | st = c->fc->streams[c->fc->nb_streams-1]; |
| 1014 | if (atom.size < 2) |
| 1015 | return AVERROR_INVALIDDATA; |
| 1016 | mov_field_order = avio_rb16(pb); |
| 1017 | if ((mov_field_order & 0xFF00) == 0x0100) |
| 1018 | decoded_field_order = AV_FIELD_PROGRESSIVE; |
| 1019 | else if ((mov_field_order & 0xFF00) == 0x0200) { |
| 1020 | switch (mov_field_order & 0xFF) { |
| 1021 | case 0x01: decoded_field_order = AV_FIELD_TT; |
| 1022 | break; |
| 1023 | case 0x06: decoded_field_order = AV_FIELD_BB; |
| 1024 | break; |
| 1025 | case 0x09: decoded_field_order = AV_FIELD_TB; |
| 1026 | break; |
| 1027 | case 0x0E: decoded_field_order = AV_FIELD_BT; |
| 1028 | break; |
| 1029 | } |
| 1030 | } |
| 1031 | if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) { |
| 1032 | av_log(NULL, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order); |
| 1033 | } |
| 1034 | st->codec->field_order = decoded_field_order; |
| 1035 | |
| 1036 | return 0; |
| 1037 | } |
| 1038 | |
| 1039 | /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */ |
| 1040 | static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom, |
| 1041 | enum AVCodecID codec_id) |
| 1042 | { |
| 1043 | AVStream *st; |
| 1044 | uint64_t size; |
| 1045 | uint8_t *buf; |
| 1046 | int err; |
| 1047 | |
| 1048 | if (c->fc->nb_streams < 1) // will happen with jp2 files |
| 1049 | return 0; |
| 1050 | st= c->fc->streams[c->fc->nb_streams-1]; |
| 1051 | |
| 1052 | if (st->codec->codec_id != codec_id) |
| 1053 | return 0; /* unexpected codec_id - don't mess with extradata */ |
| 1054 | |
| 1055 | size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE; |
| 1056 | if (size > INT_MAX || (uint64_t)atom.size > INT_MAX) |
| 1057 | return AVERROR_INVALIDDATA; |
| 1058 | if ((err = av_reallocp(&st->codec->extradata, size)) < 0) { |
| 1059 | st->codec->extradata_size = 0; |
| 1060 | return err; |
| 1061 | } |
| 1062 | buf = st->codec->extradata + st->codec->extradata_size; |
| 1063 | st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE; |
| 1064 | AV_WB32( buf , atom.size + 8); |
| 1065 | AV_WL32( buf + 4, atom.type); |
| 1066 | err = avio_read(pb, buf + 8, atom.size); |
| 1067 | if (err < 0) { |
| 1068 | return err; |
| 1069 | } else if (err < atom.size) { |
| 1070 | av_log(c->fc, AV_LOG_WARNING, "truncated extradata\n"); |
| 1071 | st->codec->extradata_size -= atom.size - err; |
| 1072 | } |
| 1073 | memset(buf + 8 + err, 0, FF_INPUT_BUFFER_PADDING_SIZE); |
| 1074 | return 0; |
| 1075 | } |
| 1076 | |
| 1077 | /* wrapper functions for reading ALAC/AVS/MJPEG/MJPEG2000 extradata atoms only for those codecs */ |
| 1078 | static int mov_read_alac(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 1079 | { |
| 1080 | return mov_read_extradata(c, pb, atom, AV_CODEC_ID_ALAC); |
| 1081 | } |
| 1082 | |
| 1083 | static int mov_read_avss(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 1084 | { |
| 1085 | return mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVS); |
| 1086 | } |
| 1087 | |
| 1088 | static int mov_read_jp2h(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 1089 | { |
| 1090 | return mov_read_extradata(c, pb, atom, AV_CODEC_ID_JPEG2000); |
| 1091 | } |
| 1092 | |
| 1093 | static int mov_read_avid(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 1094 | { |
| 1095 | int ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVUI); |
| 1096 | if(ret == 0) |
| 1097 | ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_DNXHD); |
| 1098 | return ret; |
| 1099 | } |
| 1100 | |
| 1101 | static int mov_read_targa_y216(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 1102 | { |
| 1103 | int ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_TARGA_Y216); |
| 1104 | |
| 1105 | if (!ret && c->fc->nb_streams >= 1) { |
| 1106 | AVCodecContext *avctx = c->fc->streams[c->fc->nb_streams-1]->codec; |
| 1107 | if (avctx->extradata_size >= 40) { |
| 1108 | avctx->height = AV_RB16(&avctx->extradata[36]); |
| 1109 | avctx->width = AV_RB16(&avctx->extradata[38]); |
| 1110 | } |
| 1111 | } |
| 1112 | return ret; |
| 1113 | } |
| 1114 | |
| 1115 | static int mov_read_ares(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 1116 | { |
| 1117 | if (c->fc->nb_streams >= 1) { |
| 1118 | AVCodecContext *codec = c->fc->streams[c->fc->nb_streams-1]->codec; |
| 1119 | if (codec->codec_tag == MKTAG('A', 'V', 'i', 'n') && |
| 1120 | codec->codec_id == AV_CODEC_ID_H264 && |
| 1121 | atom.size > 11) { |
| 1122 | avio_skip(pb, 10); |
| 1123 | /* For AVID AVCI50, force width of 1440 to be able to select the correct SPS and PPS */ |
| 1124 | if (avio_rb16(pb) == 0xd4d) |
| 1125 | codec->width = 1440; |
| 1126 | return 0; |
| 1127 | } |
| 1128 | } |
| 1129 | |
| 1130 | return mov_read_avid(c, pb, atom); |
| 1131 | } |
| 1132 | |
| 1133 | static int mov_read_svq3(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 1134 | { |
| 1135 | return mov_read_extradata(c, pb, atom, AV_CODEC_ID_SVQ3); |
| 1136 | } |
| 1137 | |
| 1138 | static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 1139 | { |
| 1140 | AVStream *st; |
| 1141 | |
| 1142 | if (c->fc->nb_streams < 1) |
| 1143 | return 0; |
| 1144 | st = c->fc->streams[c->fc->nb_streams-1]; |
| 1145 | |
| 1146 | if ((uint64_t)atom.size > (1<<30)) |
| 1147 | return AVERROR_INVALIDDATA; |
| 1148 | |
| 1149 | if (st->codec->codec_id == AV_CODEC_ID_QDM2 || |
| 1150 | st->codec->codec_id == AV_CODEC_ID_QDMC || |
| 1151 | st->codec->codec_id == AV_CODEC_ID_SPEEX) { |
| 1152 | // pass all frma atom to codec, needed at least for QDMC and QDM2 |
| 1153 | av_free(st->codec->extradata); |
| 1154 | if (ff_get_extradata(st->codec, pb, atom.size) < 0) |
| 1155 | return AVERROR(ENOMEM); |
| 1156 | } else if (atom.size > 8) { /* to read frma, esds atoms */ |
| 1157 | int ret; |
| 1158 | if ((ret = mov_read_default(c, pb, atom)) < 0) |
| 1159 | return ret; |
| 1160 | } else |
| 1161 | avio_skip(pb, atom.size); |
| 1162 | return 0; |
| 1163 | } |
| 1164 | |
| 1165 | /** |
| 1166 | * This function reads atom content and puts data in extradata without tag |
| 1167 | * nor size unlike mov_read_extradata. |
| 1168 | */ |
| 1169 | static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 1170 | { |
| 1171 | AVStream *st; |
| 1172 | |
| 1173 | if (c->fc->nb_streams < 1) |
| 1174 | return 0; |
| 1175 | st = c->fc->streams[c->fc->nb_streams-1]; |
| 1176 | |
| 1177 | if ((uint64_t)atom.size > (1<<30)) |
| 1178 | return AVERROR_INVALIDDATA; |
| 1179 | |
| 1180 | if (atom.size >= 10) { |
| 1181 | // Broken files created by legacy versions of libavformat will |
| 1182 | // wrap a whole fiel atom inside of a glbl atom. |
| 1183 | unsigned size = avio_rb32(pb); |
| 1184 | unsigned type = avio_rl32(pb); |
| 1185 | avio_seek(pb, -8, SEEK_CUR); |
| 1186 | if (type == MKTAG('f','i','e','l') && size == atom.size) |
| 1187 | return mov_read_default(c, pb, atom); |
| 1188 | } |
| 1189 | if (st->codec->extradata_size > 1 && st->codec->extradata) { |
| 1190 | av_log(c, AV_LOG_WARNING, "ignoring multiple glbl\n"); |
| 1191 | return 0; |
| 1192 | } |
| 1193 | av_free(st->codec->extradata); |
| 1194 | if (ff_get_extradata(st->codec, pb, atom.size) < 0) |
| 1195 | return AVERROR(ENOMEM); |
| 1196 | |
| 1197 | return 0; |
| 1198 | } |
| 1199 | |
| 1200 | static int mov_read_dvc1(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 1201 | { |
| 1202 | AVStream *st; |
| 1203 | uint8_t profile_level; |
| 1204 | int ret; |
| 1205 | |
| 1206 | if (c->fc->nb_streams < 1) |
| 1207 | return 0; |
| 1208 | st = c->fc->streams[c->fc->nb_streams-1]; |
| 1209 | |
| 1210 | if (atom.size >= (1<<28) || atom.size < 7) |
| 1211 | return AVERROR_INVALIDDATA; |
| 1212 | |
| 1213 | profile_level = avio_r8(pb); |
| 1214 | if ((profile_level & 0xf0) != 0xc0) |
| 1215 | return 0; |
| 1216 | |
| 1217 | avio_seek(pb, 6, SEEK_CUR); |
| 1218 | av_free(st->codec->extradata); |
| 1219 | if ((ret = ff_get_extradata(st->codec, pb, atom.size - 7)) < 0) |
| 1220 | return ret; |
| 1221 | |
| 1222 | return 0; |
| 1223 | } |
| 1224 | |
| 1225 | /** |
| 1226 | * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself, |
| 1227 | * but can have extradata appended at the end after the 40 bytes belonging |
| 1228 | * to the struct. |
| 1229 | */ |
| 1230 | static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 1231 | { |
| 1232 | AVStream *st; |
| 1233 | |
| 1234 | if (c->fc->nb_streams < 1) |
| 1235 | return 0; |
| 1236 | if (atom.size <= 40) |
| 1237 | return 0; |
| 1238 | st = c->fc->streams[c->fc->nb_streams-1]; |
| 1239 | |
| 1240 | if ((uint64_t)atom.size > (1<<30)) |
| 1241 | return AVERROR_INVALIDDATA; |
| 1242 | |
| 1243 | avio_skip(pb, 40); |
| 1244 | av_free(st->codec->extradata); |
| 1245 | if (ff_get_extradata(st->codec, pb, atom.size - 40) < 0) |
| 1246 | return AVERROR(ENOMEM); |
| 1247 | return 0; |
| 1248 | } |
| 1249 | |
| 1250 | static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 1251 | { |
| 1252 | AVStream *st; |
| 1253 | MOVStreamContext *sc; |
| 1254 | unsigned int i, entries; |
| 1255 | |
| 1256 | if (c->fc->nb_streams < 1) |
| 1257 | return 0; |
| 1258 | st = c->fc->streams[c->fc->nb_streams-1]; |
| 1259 | sc = st->priv_data; |
| 1260 | |
| 1261 | avio_r8(pb); /* version */ |
| 1262 | avio_rb24(pb); /* flags */ |
| 1263 | |
| 1264 | entries = avio_rb32(pb); |
| 1265 | |
| 1266 | if (!entries) |
| 1267 | return 0; |
| 1268 | |
| 1269 | if (sc->chunk_offsets) |
| 1270 | av_log(c->fc, AV_LOG_WARNING, "Duplicated STCO atom\n"); |
| 1271 | av_free(sc->chunk_offsets); |
| 1272 | sc->chunk_count = 0; |
| 1273 | sc->chunk_offsets = av_malloc_array(entries, sizeof(*sc->chunk_offsets)); |
| 1274 | if (!sc->chunk_offsets) |
| 1275 | return AVERROR(ENOMEM); |
| 1276 | sc->chunk_count = entries; |
| 1277 | |
| 1278 | if (atom.type == MKTAG('s','t','c','o')) |
| 1279 | for (i = 0; i < entries && !pb->eof_reached; i++) |
| 1280 | sc->chunk_offsets[i] = avio_rb32(pb); |
| 1281 | else if (atom.type == MKTAG('c','o','6','4')) |
| 1282 | for (i = 0; i < entries && !pb->eof_reached; i++) |
| 1283 | sc->chunk_offsets[i] = avio_rb64(pb); |
| 1284 | else |
| 1285 | return AVERROR_INVALIDDATA; |
| 1286 | |
| 1287 | sc->chunk_count = i; |
| 1288 | |
| 1289 | if (pb->eof_reached) |
| 1290 | return AVERROR_EOF; |
| 1291 | |
| 1292 | return 0; |
| 1293 | } |
| 1294 | |
| 1295 | /** |
| 1296 | * Compute codec id for 'lpcm' tag. |
| 1297 | * See CoreAudioTypes and AudioStreamBasicDescription at Apple. |
| 1298 | */ |
| 1299 | enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags) |
| 1300 | { |
| 1301 | /* lpcm flags: |
| 1302 | * 0x1 = float |
| 1303 | * 0x2 = big-endian |
| 1304 | * 0x4 = signed |
| 1305 | */ |
| 1306 | return ff_get_pcm_codec_id(bps, flags & 1, flags & 2, flags & 4 ? -1 : 0); |
| 1307 | } |
| 1308 | |
| 1309 | static int mov_codec_id(AVStream *st, uint32_t format) |
| 1310 | { |
| 1311 | int id = ff_codec_get_id(ff_codec_movaudio_tags, format); |
| 1312 | |
| 1313 | if (id <= 0 && |
| 1314 | ((format & 0xFFFF) == 'm' + ('s' << 8) || |
| 1315 | (format & 0xFFFF) == 'T' + ('S' << 8))) |
| 1316 | id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format) & 0xFFFF); |
| 1317 | |
| 1318 | if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) { |
| 1319 | st->codec->codec_type = AVMEDIA_TYPE_AUDIO; |
| 1320 | } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO && |
| 1321 | /* skip old asf mpeg4 tag */ |
| 1322 | format && format != MKTAG('m','p','4','s')) { |
| 1323 | id = ff_codec_get_id(ff_codec_movvideo_tags, format); |
| 1324 | if (id <= 0) |
| 1325 | id = ff_codec_get_id(ff_codec_bmp_tags, format); |
| 1326 | if (id > 0) |
| 1327 | st->codec->codec_type = AVMEDIA_TYPE_VIDEO; |
| 1328 | else if (st->codec->codec_type == AVMEDIA_TYPE_DATA || |
| 1329 | (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE && |
| 1330 | st->codec->codec_id == AV_CODEC_ID_NONE)) { |
| 1331 | id = ff_codec_get_id(ff_codec_movsubtitle_tags, format); |
| 1332 | if (id > 0) |
| 1333 | st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE; |
| 1334 | } |
| 1335 | } |
| 1336 | |
| 1337 | st->codec->codec_tag = format; |
| 1338 | |
| 1339 | return id; |
| 1340 | } |
| 1341 | |
| 1342 | static void mov_parse_stsd_video(MOVContext *c, AVIOContext *pb, |
| 1343 | AVStream *st, MOVStreamContext *sc) |
| 1344 | { |
| 1345 | uint8_t codec_name[32]; |
| 1346 | unsigned int color_depth, len, j; |
| 1347 | int color_greyscale; |
| 1348 | int color_table_id; |
| 1349 | |
| 1350 | avio_rb16(pb); /* version */ |
| 1351 | avio_rb16(pb); /* revision level */ |
| 1352 | avio_rb32(pb); /* vendor */ |
| 1353 | avio_rb32(pb); /* temporal quality */ |
| 1354 | avio_rb32(pb); /* spatial quality */ |
| 1355 | |
| 1356 | st->codec->width = avio_rb16(pb); /* width */ |
| 1357 | st->codec->height = avio_rb16(pb); /* height */ |
| 1358 | |
| 1359 | avio_rb32(pb); /* horiz resolution */ |
| 1360 | avio_rb32(pb); /* vert resolution */ |
| 1361 | avio_rb32(pb); /* data size, always 0 */ |
| 1362 | avio_rb16(pb); /* frames per samples */ |
| 1363 | |
| 1364 | len = avio_r8(pb); /* codec name, pascal string */ |
| 1365 | if (len > 31) |
| 1366 | len = 31; |
| 1367 | mov_read_mac_string(c, pb, len, codec_name, sizeof(codec_name)); |
| 1368 | if (len < 31) |
| 1369 | avio_skip(pb, 31 - len); |
| 1370 | |
| 1371 | if (codec_name[0]) |
| 1372 | av_dict_set(&st->metadata, "encoder", codec_name, 0); |
| 1373 | |
| 1374 | /* codec_tag YV12 triggers an UV swap in rawdec.c */ |
| 1375 | if (!memcmp(codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25)) { |
| 1376 | st->codec->codec_tag = MKTAG('I', '4', '2', '0'); |
| 1377 | st->codec->width &= ~1; |
| 1378 | st->codec->height &= ~1; |
| 1379 | } |
| 1380 | /* Flash Media Server uses tag H263 with Sorenson Spark */ |
| 1381 | if (st->codec->codec_tag == MKTAG('H','2','6','3') && |
| 1382 | !memcmp(codec_name, "Sorenson H263", 13)) |
| 1383 | st->codec->codec_id = AV_CODEC_ID_FLV1; |
| 1384 | |
| 1385 | st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */ |
| 1386 | color_table_id = avio_rb16(pb); /* colortable id */ |
| 1387 | av_dlog(c->fc, "depth %d, ctab id %d\n", |
| 1388 | st->codec->bits_per_coded_sample, color_table_id); |
| 1389 | /* figure out the palette situation */ |
| 1390 | color_depth = st->codec->bits_per_coded_sample & 0x1F; |
| 1391 | color_greyscale = st->codec->bits_per_coded_sample & 0x20; |
| 1392 | /* Do not create a greyscale palette for cinepak */ |
| 1393 | if (color_greyscale && st->codec->codec_id == AV_CODEC_ID_CINEPAK) |
| 1394 | return; |
| 1395 | |
| 1396 | /* if the depth is 2, 4, or 8 bpp, file is palettized */ |
| 1397 | if ((color_depth == 2) || (color_depth == 4) || (color_depth == 8)) { |
| 1398 | /* for palette traversal */ |
| 1399 | unsigned int color_start, color_count, color_end; |
| 1400 | unsigned char a, r, g, b; |
| 1401 | |
| 1402 | if (color_greyscale) { |
| 1403 | int color_index, color_dec; |
| 1404 | /* compute the greyscale palette */ |
| 1405 | st->codec->bits_per_coded_sample = color_depth; |
| 1406 | color_count = 1 << color_depth; |
| 1407 | color_index = 255; |
| 1408 | color_dec = 256 / (color_count - 1); |
| 1409 | for (j = 0; j < color_count; j++) { |
| 1410 | r = g = b = color_index; |
| 1411 | sc->palette[j] = (0xFFU << 24) | (r << 16) | (g << 8) | (b); |
| 1412 | color_index -= color_dec; |
| 1413 | if (color_index < 0) |
| 1414 | color_index = 0; |
| 1415 | } |
| 1416 | } else if (color_table_id) { |
| 1417 | const uint8_t *color_table; |
| 1418 | /* if flag bit 3 is set, use the default palette */ |
| 1419 | color_count = 1 << color_depth; |
| 1420 | if (color_depth == 2) |
| 1421 | color_table = ff_qt_default_palette_4; |
| 1422 | else if (color_depth == 4) |
| 1423 | color_table = ff_qt_default_palette_16; |
| 1424 | else |
| 1425 | color_table = ff_qt_default_palette_256; |
| 1426 | |
| 1427 | for (j = 0; j < color_count; j++) { |
| 1428 | r = color_table[j * 3 + 0]; |
| 1429 | g = color_table[j * 3 + 1]; |
| 1430 | b = color_table[j * 3 + 2]; |
| 1431 | sc->palette[j] = (0xFFU << 24) | (r << 16) | (g << 8) | (b); |
| 1432 | } |
| 1433 | } else { |
| 1434 | /* load the palette from the file */ |
| 1435 | color_start = avio_rb32(pb); |
| 1436 | color_count = avio_rb16(pb); |
| 1437 | color_end = avio_rb16(pb); |
| 1438 | if ((color_start <= 255) && (color_end <= 255)) { |
| 1439 | for (j = color_start; j <= color_end; j++) { |
| 1440 | /* each A, R, G, or B component is 16 bits; |
| 1441 | * only use the top 8 bits */ |
| 1442 | a = avio_r8(pb); |
| 1443 | avio_r8(pb); |
| 1444 | r = avio_r8(pb); |
| 1445 | avio_r8(pb); |
| 1446 | g = avio_r8(pb); |
| 1447 | avio_r8(pb); |
| 1448 | b = avio_r8(pb); |
| 1449 | avio_r8(pb); |
| 1450 | sc->palette[j] = (a << 24 ) | (r << 16) | (g << 8) | (b); |
| 1451 | } |
| 1452 | } |
| 1453 | } |
| 1454 | sc->has_palette = 1; |
| 1455 | } |
| 1456 | } |
| 1457 | |
| 1458 | static void mov_parse_stsd_audio(MOVContext *c, AVIOContext *pb, |
| 1459 | AVStream *st, MOVStreamContext *sc) |
| 1460 | { |
| 1461 | int bits_per_sample, flags; |
| 1462 | uint16_t version = avio_rb16(pb); |
| 1463 | AVDictionaryEntry *compatible_brands = av_dict_get(c->fc->metadata, "compatible_brands", NULL, AV_DICT_MATCH_CASE); |
| 1464 | |
| 1465 | avio_rb16(pb); /* revision level */ |
| 1466 | avio_rb32(pb); /* vendor */ |
| 1467 | |
| 1468 | st->codec->channels = avio_rb16(pb); /* channel count */ |
| 1469 | st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */ |
| 1470 | av_dlog(c->fc, "audio channels %d\n", st->codec->channels); |
| 1471 | |
| 1472 | sc->audio_cid = avio_rb16(pb); |
| 1473 | avio_rb16(pb); /* packet size = 0 */ |
| 1474 | |
| 1475 | st->codec->sample_rate = ((avio_rb32(pb) >> 16)); |
| 1476 | |
| 1477 | // Read QT version 1 fields. In version 0 these do not exist. |
| 1478 | av_dlog(c->fc, "version =%d, isom =%d\n", version, c->isom); |
| 1479 | if (!c->isom || |
| 1480 | (compatible_brands && strstr(compatible_brands->value, "qt "))) { |
| 1481 | |
| 1482 | if (version == 1) { |
| 1483 | sc->samples_per_frame = avio_rb32(pb); |
| 1484 | avio_rb32(pb); /* bytes per packet */ |
| 1485 | sc->bytes_per_frame = avio_rb32(pb); |
| 1486 | avio_rb32(pb); /* bytes per sample */ |
| 1487 | } else if (version == 2) { |
| 1488 | avio_rb32(pb); /* sizeof struct only */ |
| 1489 | st->codec->sample_rate = av_int2double(avio_rb64(pb)); |
| 1490 | st->codec->channels = avio_rb32(pb); |
| 1491 | avio_rb32(pb); /* always 0x7F000000 */ |
| 1492 | st->codec->bits_per_coded_sample = avio_rb32(pb); |
| 1493 | |
| 1494 | flags = avio_rb32(pb); /* lpcm format specific flag */ |
| 1495 | sc->bytes_per_frame = avio_rb32(pb); |
| 1496 | sc->samples_per_frame = avio_rb32(pb); |
| 1497 | if (st->codec->codec_tag == MKTAG('l','p','c','m')) |
| 1498 | st->codec->codec_id = |
| 1499 | ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, |
| 1500 | flags); |
| 1501 | } |
| 1502 | } |
| 1503 | |
| 1504 | switch (st->codec->codec_id) { |
| 1505 | case AV_CODEC_ID_PCM_S8: |
| 1506 | case AV_CODEC_ID_PCM_U8: |
| 1507 | if (st->codec->bits_per_coded_sample == 16) |
| 1508 | st->codec->codec_id = AV_CODEC_ID_PCM_S16BE; |
| 1509 | break; |
| 1510 | case AV_CODEC_ID_PCM_S16LE: |
| 1511 | case AV_CODEC_ID_PCM_S16BE: |
| 1512 | if (st->codec->bits_per_coded_sample == 8) |
| 1513 | st->codec->codec_id = AV_CODEC_ID_PCM_S8; |
| 1514 | else if (st->codec->bits_per_coded_sample == 24) |
| 1515 | st->codec->codec_id = |
| 1516 | st->codec->codec_id == AV_CODEC_ID_PCM_S16BE ? |
| 1517 | AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE; |
| 1518 | else if (st->codec->bits_per_coded_sample == 32) |
| 1519 | st->codec->codec_id = |
| 1520 | st->codec->codec_id == AV_CODEC_ID_PCM_S16BE ? |
| 1521 | AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE; |
| 1522 | break; |
| 1523 | /* set values for old format before stsd version 1 appeared */ |
| 1524 | case AV_CODEC_ID_MACE3: |
| 1525 | sc->samples_per_frame = 6; |
| 1526 | sc->bytes_per_frame = 2 * st->codec->channels; |
| 1527 | break; |
| 1528 | case AV_CODEC_ID_MACE6: |
| 1529 | sc->samples_per_frame = 6; |
| 1530 | sc->bytes_per_frame = 1 * st->codec->channels; |
| 1531 | break; |
| 1532 | case AV_CODEC_ID_ADPCM_IMA_QT: |
| 1533 | sc->samples_per_frame = 64; |
| 1534 | sc->bytes_per_frame = 34 * st->codec->channels; |
| 1535 | break; |
| 1536 | case AV_CODEC_ID_GSM: |
| 1537 | sc->samples_per_frame = 160; |
| 1538 | sc->bytes_per_frame = 33; |
| 1539 | break; |
| 1540 | default: |
| 1541 | break; |
| 1542 | } |
| 1543 | |
| 1544 | bits_per_sample = av_get_bits_per_sample(st->codec->codec_id); |
| 1545 | if (bits_per_sample) { |
| 1546 | st->codec->bits_per_coded_sample = bits_per_sample; |
| 1547 | sc->sample_size = (bits_per_sample >> 3) * st->codec->channels; |
| 1548 | } |
| 1549 | } |
| 1550 | |
| 1551 | static void mov_parse_stsd_subtitle(MOVContext *c, AVIOContext *pb, |
| 1552 | AVStream *st, MOVStreamContext *sc, |
| 1553 | int size) |
| 1554 | { |
| 1555 | // ttxt stsd contains display flags, justification, background |
| 1556 | // color, fonts, and default styles, so fake an atom to read it |
| 1557 | MOVAtom fake_atom = { .size = size }; |
| 1558 | // mp4s contains a regular esds atom |
| 1559 | if (st->codec->codec_tag != AV_RL32("mp4s")) |
| 1560 | mov_read_glbl(c, pb, fake_atom); |
| 1561 | st->codec->width = sc->width; |
| 1562 | st->codec->height = sc->height; |
| 1563 | } |
| 1564 | |
| 1565 | static uint32_t yuv_to_rgba(uint32_t ycbcr) |
| 1566 | { |
| 1567 | uint8_t r, g, b; |
| 1568 | int y, cb, cr; |
| 1569 | |
| 1570 | y = (ycbcr >> 16) & 0xFF; |
| 1571 | cr = (ycbcr >> 8) & 0xFF; |
| 1572 | cb = ycbcr & 0xFF; |
| 1573 | |
| 1574 | b = av_clip_uint8(1.164 * (y - 16) + 2.018 * (cb - 128)); |
| 1575 | g = av_clip_uint8(1.164 * (y - 16) - 0.813 * (cr - 128) - 0.391 * (cb - 128)); |
| 1576 | r = av_clip_uint8(1.164 * (y - 16) + 1.596 * (cr - 128)); |
| 1577 | |
| 1578 | return (r << 16) | (g << 8) | b; |
| 1579 | } |
| 1580 | |
| 1581 | static int mov_rewrite_dvd_sub_extradata(AVStream *st) |
| 1582 | { |
| 1583 | char buf[256] = {0}; |
| 1584 | uint8_t *src = st->codec->extradata; |
| 1585 | int i; |
| 1586 | |
| 1587 | if (st->codec->extradata_size != 64) |
| 1588 | return 0; |
| 1589 | |
| 1590 | if (st->codec->width > 0 && st->codec->height > 0) |
| 1591 | snprintf(buf, sizeof(buf), "size: %dx%d\n", |
| 1592 | st->codec->width, st->codec->height); |
| 1593 | av_strlcat(buf, "palette: ", sizeof(buf)); |
| 1594 | |
| 1595 | for (i = 0; i < 16; i++) { |
| 1596 | uint32_t yuv = AV_RB32(src + i * 4); |
| 1597 | uint32_t rgba = yuv_to_rgba(yuv); |
| 1598 | |
| 1599 | av_strlcatf(buf, sizeof(buf), "%06"PRIx32"%s", rgba, i != 15 ? ", " : ""); |
| 1600 | } |
| 1601 | |
| 1602 | if (av_strlcat(buf, "\n", sizeof(buf)) >= sizeof(buf)) |
| 1603 | return 0; |
| 1604 | |
| 1605 | av_freep(&st->codec->extradata); |
| 1606 | st->codec->extradata_size = 0; |
| 1607 | st->codec->extradata = av_mallocz(strlen(buf) + FF_INPUT_BUFFER_PADDING_SIZE); |
| 1608 | if (!st->codec->extradata) |
| 1609 | return AVERROR(ENOMEM); |
| 1610 | st->codec->extradata_size = strlen(buf); |
| 1611 | memcpy(st->codec->extradata, buf, st->codec->extradata_size); |
| 1612 | |
| 1613 | return 0; |
| 1614 | } |
| 1615 | |
| 1616 | static int mov_parse_stsd_data(MOVContext *c, AVIOContext *pb, |
| 1617 | AVStream *st, MOVStreamContext *sc, |
| 1618 | int size) |
| 1619 | { |
| 1620 | if (st->codec->codec_tag == MKTAG('t','m','c','d')) { |
| 1621 | if (ff_get_extradata(st->codec, pb, size) < 0) |
| 1622 | return AVERROR(ENOMEM); |
| 1623 | if (size > 16) { |
| 1624 | MOVStreamContext *tmcd_ctx = st->priv_data; |
| 1625 | int val; |
| 1626 | val = AV_RB32(st->codec->extradata + 4); |
| 1627 | tmcd_ctx->tmcd_flags = val; |
| 1628 | if (val & 1) |
| 1629 | st->codec->flags2 |= CODEC_FLAG2_DROP_FRAME_TIMECODE; |
| 1630 | st->codec->time_base.den = st->codec->extradata[16]; /* number of frame */ |
| 1631 | st->codec->time_base.num = 1; |
| 1632 | if (size > 30) { |
| 1633 | uint32_t len = AV_RB32(st->codec->extradata + 18); /* name atom length */ |
| 1634 | uint32_t format = AV_RB32(st->codec->extradata + 22); |
| 1635 | if (format == AV_RB32("name") && (int64_t)size >= (int64_t)len + 18) { |
| 1636 | uint16_t str_size = AV_RB16(st->codec->extradata + 26); /* string length */ |
| 1637 | if (str_size > 0 && size >= (int)str_size + 26) { |
| 1638 | char *reel_name = av_malloc(str_size + 1); |
| 1639 | if (!reel_name) |
| 1640 | return AVERROR(ENOMEM); |
| 1641 | memcpy(reel_name, st->codec->extradata + 30, str_size); |
| 1642 | reel_name[str_size] = 0; /* Add null terminator */ |
| 1643 | /* don't add reel_name if emtpy string */ |
| 1644 | if (*reel_name == 0) { |
| 1645 | av_free(reel_name); |
| 1646 | } else { |
| 1647 | av_dict_set(&st->metadata, "reel_name", reel_name, AV_DICT_DONT_STRDUP_VAL); |
| 1648 | } |
| 1649 | } |
| 1650 | } |
| 1651 | } |
| 1652 | } |
| 1653 | } else { |
| 1654 | /* other codec type, just skip (rtp, mp4s ...) */ |
| 1655 | avio_skip(pb, size); |
| 1656 | } |
| 1657 | return 0; |
| 1658 | } |
| 1659 | |
| 1660 | static int mov_finalize_stsd_codec(MOVContext *c, AVIOContext *pb, |
| 1661 | AVStream *st, MOVStreamContext *sc) |
| 1662 | { |
| 1663 | if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && |
| 1664 | !st->codec->sample_rate && sc->time_scale > 1) |
| 1665 | st->codec->sample_rate = sc->time_scale; |
| 1666 | |
| 1667 | /* special codec parameters handling */ |
| 1668 | switch (st->codec->codec_id) { |
| 1669 | #if CONFIG_DV_DEMUXER |
| 1670 | case AV_CODEC_ID_DVAUDIO: |
| 1671 | c->dv_fctx = avformat_alloc_context(); |
| 1672 | c->dv_demux = avpriv_dv_init_demux(c->dv_fctx); |
| 1673 | if (!c->dv_demux) { |
| 1674 | av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n"); |
| 1675 | return AVERROR(ENOMEM); |
| 1676 | } |
| 1677 | sc->dv_audio_container = 1; |
| 1678 | st->codec->codec_id = AV_CODEC_ID_PCM_S16LE; |
| 1679 | break; |
| 1680 | #endif |
| 1681 | /* no ifdef since parameters are always those */ |
| 1682 | case AV_CODEC_ID_QCELP: |
| 1683 | st->codec->channels = 1; |
| 1684 | // force sample rate for qcelp when not stored in mov |
| 1685 | if (st->codec->codec_tag != MKTAG('Q','c','l','p')) |
| 1686 | st->codec->sample_rate = 8000; |
| 1687 | // FIXME: Why is the following needed for some files? |
| 1688 | sc->samples_per_frame = 160; |
| 1689 | if (!sc->bytes_per_frame) |
| 1690 | sc->bytes_per_frame = 35; |
| 1691 | break; |
| 1692 | case AV_CODEC_ID_AMR_NB: |
| 1693 | st->codec->channels = 1; |
| 1694 | /* force sample rate for amr, stsd in 3gp does not store sample rate */ |
| 1695 | st->codec->sample_rate = 8000; |
| 1696 | break; |
| 1697 | case AV_CODEC_ID_AMR_WB: |
| 1698 | st->codec->channels = 1; |
| 1699 | st->codec->sample_rate = 16000; |
| 1700 | break; |
| 1701 | case AV_CODEC_ID_MP2: |
| 1702 | case AV_CODEC_ID_MP3: |
| 1703 | /* force type after stsd for m1a hdlr */ |
| 1704 | st->codec->codec_type = AVMEDIA_TYPE_AUDIO; |
| 1705 | st->need_parsing = AVSTREAM_PARSE_FULL; |
| 1706 | break; |
| 1707 | case AV_CODEC_ID_GSM: |
| 1708 | case AV_CODEC_ID_ADPCM_MS: |
| 1709 | case AV_CODEC_ID_ADPCM_IMA_WAV: |
| 1710 | case AV_CODEC_ID_ILBC: |
| 1711 | case AV_CODEC_ID_MACE3: |
| 1712 | case AV_CODEC_ID_MACE6: |
| 1713 | case AV_CODEC_ID_QDM2: |
| 1714 | st->codec->block_align = sc->bytes_per_frame; |
| 1715 | break; |
| 1716 | case AV_CODEC_ID_ALAC: |
| 1717 | if (st->codec->extradata_size == 36) { |
| 1718 | st->codec->channels = AV_RB8 (st->codec->extradata + 21); |
| 1719 | st->codec->sample_rate = AV_RB32(st->codec->extradata + 32); |
| 1720 | } |
| 1721 | break; |
| 1722 | case AV_CODEC_ID_AC3: |
| 1723 | case AV_CODEC_ID_EAC3: |
| 1724 | case AV_CODEC_ID_MPEG1VIDEO: |
| 1725 | case AV_CODEC_ID_VC1: |
| 1726 | st->need_parsing = AVSTREAM_PARSE_FULL; |
| 1727 | break; |
| 1728 | default: |
| 1729 | break; |
| 1730 | } |
| 1731 | return 0; |
| 1732 | } |
| 1733 | |
| 1734 | static int mov_skip_multiple_stsd(MOVContext *c, AVIOContext *pb, |
| 1735 | int codec_tag, int format, |
| 1736 | int64_t size) |
| 1737 | { |
| 1738 | int video_codec_id = ff_codec_get_id(ff_codec_movvideo_tags, format); |
| 1739 | |
| 1740 | if (codec_tag && |
| 1741 | (codec_tag != format && |
| 1742 | (c->fc->video_codec_id ? video_codec_id != c->fc->video_codec_id |
| 1743 | : codec_tag != MKTAG('j','p','e','g')))) { |
| 1744 | /* Multiple fourcc, we skip JPEG. This is not correct, we should |
| 1745 | * export it as a separate AVStream but this needs a few changes |
| 1746 | * in the MOV demuxer, patch welcome. */ |
| 1747 | |
| 1748 | av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n"); |
| 1749 | avio_skip(pb, size); |
| 1750 | return 1; |
| 1751 | } |
| 1752 | if ( codec_tag == AV_RL32("avc1") || |
| 1753 | codec_tag == AV_RL32("hvc1") || |
| 1754 | codec_tag == AV_RL32("hev1") |
| 1755 | ) |
| 1756 | av_log(c->fc, AV_LOG_WARNING, "Concatenated H.264 or H.265 might not play correctly.\n"); |
| 1757 | |
| 1758 | return 0; |
| 1759 | } |
| 1760 | |
| 1761 | int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries) |
| 1762 | { |
| 1763 | AVStream *st; |
| 1764 | MOVStreamContext *sc; |
| 1765 | int pseudo_stream_id; |
| 1766 | |
| 1767 | if (c->fc->nb_streams < 1) |
| 1768 | return 0; |
| 1769 | st = c->fc->streams[c->fc->nb_streams-1]; |
| 1770 | sc = st->priv_data; |
| 1771 | |
| 1772 | for (pseudo_stream_id = 0; |
| 1773 | pseudo_stream_id < entries && !pb->eof_reached; |
| 1774 | pseudo_stream_id++) { |
| 1775 | //Parsing Sample description table |
| 1776 | enum AVCodecID id; |
| 1777 | int ret, dref_id = 1; |
| 1778 | MOVAtom a = { AV_RL32("stsd") }; |
| 1779 | int64_t start_pos = avio_tell(pb); |
| 1780 | int64_t size = avio_rb32(pb); /* size */ |
| 1781 | uint32_t format = avio_rl32(pb); /* data format */ |
| 1782 | |
| 1783 | if (size >= 16) { |
| 1784 | avio_rb32(pb); /* reserved */ |
| 1785 | avio_rb16(pb); /* reserved */ |
| 1786 | dref_id = avio_rb16(pb); |
| 1787 | }else if (size <= 7){ |
| 1788 | av_log(c->fc, AV_LOG_ERROR, "invalid size %"PRId64" in stsd\n", size); |
| 1789 | return AVERROR_INVALIDDATA; |
| 1790 | } |
| 1791 | |
| 1792 | if (mov_skip_multiple_stsd(c, pb, st->codec->codec_tag, format, |
| 1793 | size - (avio_tell(pb) - start_pos))) |
| 1794 | continue; |
| 1795 | |
| 1796 | sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id; |
| 1797 | sc->dref_id= dref_id; |
| 1798 | |
| 1799 | id = mov_codec_id(st, format); |
| 1800 | |
| 1801 | av_dlog(c->fc, "size=%"PRId64" 4CC= %c%c%c%c codec_type=%d\n", size, |
| 1802 | (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff, |
| 1803 | (format >> 24) & 0xff, st->codec->codec_type); |
| 1804 | |
| 1805 | if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) { |
| 1806 | st->codec->codec_id = id; |
| 1807 | mov_parse_stsd_video(c, pb, st, sc); |
| 1808 | } else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) { |
| 1809 | st->codec->codec_id = id; |
| 1810 | mov_parse_stsd_audio(c, pb, st, sc); |
| 1811 | } else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){ |
| 1812 | st->codec->codec_id = id; |
| 1813 | mov_parse_stsd_subtitle(c, pb, st, sc, |
| 1814 | size - (avio_tell(pb) - start_pos)); |
| 1815 | } else { |
| 1816 | ret = mov_parse_stsd_data(c, pb, st, sc, |
| 1817 | size - (avio_tell(pb) - start_pos)); |
| 1818 | if (ret < 0) |
| 1819 | return ret; |
| 1820 | } |
| 1821 | /* this will read extra atoms at the end (wave, alac, damr, avcC, hvcC, SMI ...) */ |
| 1822 | a.size = size - (avio_tell(pb) - start_pos); |
| 1823 | if (a.size > 8) { |
| 1824 | if ((ret = mov_read_default(c, pb, a)) < 0) |
| 1825 | return ret; |
| 1826 | } else if (a.size > 0) |
| 1827 | avio_skip(pb, a.size); |
| 1828 | } |
| 1829 | |
| 1830 | if (pb->eof_reached) |
| 1831 | return AVERROR_EOF; |
| 1832 | |
| 1833 | return mov_finalize_stsd_codec(c, pb, st, sc); |
| 1834 | } |
| 1835 | |
| 1836 | static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 1837 | { |
| 1838 | int entries; |
| 1839 | |
| 1840 | avio_r8(pb); /* version */ |
| 1841 | avio_rb24(pb); /* flags */ |
| 1842 | entries = avio_rb32(pb); |
| 1843 | |
| 1844 | return ff_mov_read_stsd_entries(c, pb, entries); |
| 1845 | } |
| 1846 | |
| 1847 | static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 1848 | { |
| 1849 | AVStream *st; |
| 1850 | MOVStreamContext *sc; |
| 1851 | unsigned int i, entries; |
| 1852 | |
| 1853 | if (c->fc->nb_streams < 1) |
| 1854 | return 0; |
| 1855 | st = c->fc->streams[c->fc->nb_streams-1]; |
| 1856 | sc = st->priv_data; |
| 1857 | |
| 1858 | avio_r8(pb); /* version */ |
| 1859 | avio_rb24(pb); /* flags */ |
| 1860 | |
| 1861 | entries = avio_rb32(pb); |
| 1862 | |
| 1863 | av_dlog(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries); |
| 1864 | |
| 1865 | if (!entries) |
| 1866 | return 0; |
| 1867 | if (sc->stsc_data) |
| 1868 | av_log(c->fc, AV_LOG_WARNING, "Duplicated STSC atom\n"); |
| 1869 | av_free(sc->stsc_data); |
| 1870 | sc->stsc_count = 0; |
| 1871 | sc->stsc_data = av_malloc_array(entries, sizeof(*sc->stsc_data)); |
| 1872 | if (!sc->stsc_data) |
| 1873 | return AVERROR(ENOMEM); |
| 1874 | |
| 1875 | for (i = 0; i < entries && !pb->eof_reached; i++) { |
| 1876 | sc->stsc_data[i].first = avio_rb32(pb); |
| 1877 | sc->stsc_data[i].count = avio_rb32(pb); |
| 1878 | sc->stsc_data[i].id = avio_rb32(pb); |
| 1879 | } |
| 1880 | |
| 1881 | sc->stsc_count = i; |
| 1882 | |
| 1883 | if (pb->eof_reached) |
| 1884 | return AVERROR_EOF; |
| 1885 | |
| 1886 | return 0; |
| 1887 | } |
| 1888 | |
| 1889 | static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 1890 | { |
| 1891 | AVStream *st; |
| 1892 | MOVStreamContext *sc; |
| 1893 | unsigned i, entries; |
| 1894 | |
| 1895 | if (c->fc->nb_streams < 1) |
| 1896 | return 0; |
| 1897 | st = c->fc->streams[c->fc->nb_streams-1]; |
| 1898 | sc = st->priv_data; |
| 1899 | |
| 1900 | avio_rb32(pb); // version + flags |
| 1901 | |
| 1902 | entries = avio_rb32(pb); |
| 1903 | if (sc->stps_data) |
| 1904 | av_log(c->fc, AV_LOG_WARNING, "Duplicated STPS atom\n"); |
| 1905 | av_free(sc->stps_data); |
| 1906 | sc->stps_count = 0; |
| 1907 | sc->stps_data = av_malloc_array(entries, sizeof(*sc->stps_data)); |
| 1908 | if (!sc->stps_data) |
| 1909 | return AVERROR(ENOMEM); |
| 1910 | |
| 1911 | for (i = 0; i < entries && !pb->eof_reached; i++) { |
| 1912 | sc->stps_data[i] = avio_rb32(pb); |
| 1913 | //av_dlog(c->fc, "stps %d\n", sc->stps_data[i]); |
| 1914 | } |
| 1915 | |
| 1916 | sc->stps_count = i; |
| 1917 | |
| 1918 | if (pb->eof_reached) |
| 1919 | return AVERROR_EOF; |
| 1920 | |
| 1921 | return 0; |
| 1922 | } |
| 1923 | |
| 1924 | static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 1925 | { |
| 1926 | AVStream *st; |
| 1927 | MOVStreamContext *sc; |
| 1928 | unsigned int i, entries; |
| 1929 | |
| 1930 | if (c->fc->nb_streams < 1) |
| 1931 | return 0; |
| 1932 | st = c->fc->streams[c->fc->nb_streams-1]; |
| 1933 | sc = st->priv_data; |
| 1934 | |
| 1935 | avio_r8(pb); /* version */ |
| 1936 | avio_rb24(pb); /* flags */ |
| 1937 | |
| 1938 | entries = avio_rb32(pb); |
| 1939 | |
| 1940 | av_dlog(c->fc, "keyframe_count = %d\n", entries); |
| 1941 | |
| 1942 | if (!entries) |
| 1943 | { |
| 1944 | sc->keyframe_absent = 1; |
| 1945 | if (!st->need_parsing && st->codec->codec_type == AVMEDIA_TYPE_VIDEO) |
| 1946 | st->need_parsing = AVSTREAM_PARSE_HEADERS; |
| 1947 | return 0; |
| 1948 | } |
| 1949 | if (sc->keyframes) |
| 1950 | av_log(c->fc, AV_LOG_WARNING, "Duplicated STSS atom\n"); |
| 1951 | av_free(sc->keyframes); |
| 1952 | sc->keyframe_count = 0; |
| 1953 | sc->keyframes = av_malloc_array(entries, sizeof(*sc->keyframes)); |
| 1954 | if (!sc->keyframes) |
| 1955 | return AVERROR(ENOMEM); |
| 1956 | |
| 1957 | for (i = 0; i < entries && !pb->eof_reached; i++) { |
| 1958 | sc->keyframes[i] = avio_rb32(pb); |
| 1959 | //av_dlog(c->fc, "keyframes[]=%d\n", sc->keyframes[i]); |
| 1960 | } |
| 1961 | |
| 1962 | sc->keyframe_count = i; |
| 1963 | |
| 1964 | if (pb->eof_reached) |
| 1965 | return AVERROR_EOF; |
| 1966 | |
| 1967 | return 0; |
| 1968 | } |
| 1969 | |
| 1970 | static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 1971 | { |
| 1972 | AVStream *st; |
| 1973 | MOVStreamContext *sc; |
| 1974 | unsigned int i, entries, sample_size, field_size, num_bytes; |
| 1975 | GetBitContext gb; |
| 1976 | unsigned char* buf; |
| 1977 | |
| 1978 | if (c->fc->nb_streams < 1) |
| 1979 | return 0; |
| 1980 | st = c->fc->streams[c->fc->nb_streams-1]; |
| 1981 | sc = st->priv_data; |
| 1982 | |
| 1983 | avio_r8(pb); /* version */ |
| 1984 | avio_rb24(pb); /* flags */ |
| 1985 | |
| 1986 | if (atom.type == MKTAG('s','t','s','z')) { |
| 1987 | sample_size = avio_rb32(pb); |
| 1988 | if (!sc->sample_size) /* do not overwrite value computed in stsd */ |
| 1989 | sc->sample_size = sample_size; |
| 1990 | sc->stsz_sample_size = sample_size; |
| 1991 | field_size = 32; |
| 1992 | } else { |
| 1993 | sample_size = 0; |
| 1994 | avio_rb24(pb); /* reserved */ |
| 1995 | field_size = avio_r8(pb); |
| 1996 | } |
| 1997 | entries = avio_rb32(pb); |
| 1998 | |
| 1999 | av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries); |
| 2000 | |
| 2001 | sc->sample_count = entries; |
| 2002 | if (sample_size) |
| 2003 | return 0; |
| 2004 | |
| 2005 | if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) { |
| 2006 | av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size); |
| 2007 | return AVERROR_INVALIDDATA; |
| 2008 | } |
| 2009 | |
| 2010 | if (!entries) |
| 2011 | return 0; |
| 2012 | if (entries >= (UINT_MAX - 4) / field_size) |
| 2013 | return AVERROR_INVALIDDATA; |
| 2014 | if (sc->sample_sizes) |
| 2015 | av_log(c->fc, AV_LOG_WARNING, "Duplicated STSZ atom\n"); |
| 2016 | av_free(sc->sample_sizes); |
| 2017 | sc->sample_count = 0; |
| 2018 | sc->sample_sizes = av_malloc_array(entries, sizeof(*sc->sample_sizes)); |
| 2019 | if (!sc->sample_sizes) |
| 2020 | return AVERROR(ENOMEM); |
| 2021 | |
| 2022 | num_bytes = (entries*field_size+4)>>3; |
| 2023 | |
| 2024 | buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE); |
| 2025 | if (!buf) { |
| 2026 | av_freep(&sc->sample_sizes); |
| 2027 | return AVERROR(ENOMEM); |
| 2028 | } |
| 2029 | |
| 2030 | if (avio_read(pb, buf, num_bytes) < num_bytes) { |
| 2031 | av_freep(&sc->sample_sizes); |
| 2032 | av_free(buf); |
| 2033 | return AVERROR_INVALIDDATA; |
| 2034 | } |
| 2035 | |
| 2036 | init_get_bits(&gb, buf, 8*num_bytes); |
| 2037 | |
| 2038 | for (i = 0; i < entries && !pb->eof_reached; i++) { |
| 2039 | sc->sample_sizes[i] = get_bits_long(&gb, field_size); |
| 2040 | sc->data_size += sc->sample_sizes[i]; |
| 2041 | } |
| 2042 | |
| 2043 | sc->sample_count = i; |
| 2044 | |
| 2045 | if (pb->eof_reached) |
| 2046 | return AVERROR_EOF; |
| 2047 | |
| 2048 | av_free(buf); |
| 2049 | return 0; |
| 2050 | } |
| 2051 | |
| 2052 | static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 2053 | { |
| 2054 | AVStream *st; |
| 2055 | MOVStreamContext *sc; |
| 2056 | unsigned int i, entries; |
| 2057 | int64_t duration=0; |
| 2058 | int64_t total_sample_count=0; |
| 2059 | |
| 2060 | if (c->fc->nb_streams < 1) |
| 2061 | return 0; |
| 2062 | st = c->fc->streams[c->fc->nb_streams-1]; |
| 2063 | sc = st->priv_data; |
| 2064 | |
| 2065 | avio_r8(pb); /* version */ |
| 2066 | avio_rb24(pb); /* flags */ |
| 2067 | entries = avio_rb32(pb); |
| 2068 | |
| 2069 | av_dlog(c->fc, "track[%i].stts.entries = %i\n", |
| 2070 | c->fc->nb_streams-1, entries); |
| 2071 | |
| 2072 | if (sc->stts_data) |
| 2073 | av_log(c->fc, AV_LOG_WARNING, "Duplicated STTS atom\n"); |
| 2074 | av_free(sc->stts_data); |
| 2075 | sc->stts_count = 0; |
| 2076 | sc->stts_data = av_malloc_array(entries, sizeof(*sc->stts_data)); |
| 2077 | if (!sc->stts_data) |
| 2078 | return AVERROR(ENOMEM); |
| 2079 | |
| 2080 | for (i = 0; i < entries && !pb->eof_reached; i++) { |
| 2081 | int sample_duration; |
| 2082 | int sample_count; |
| 2083 | |
| 2084 | sample_count=avio_rb32(pb); |
| 2085 | sample_duration = avio_rb32(pb); |
| 2086 | |
| 2087 | /* sample_duration < 0 is invalid based on the spec */ |
| 2088 | if (sample_duration < 0) { |
| 2089 | av_log(c->fc, AV_LOG_ERROR, "Invalid SampleDelta %d in STTS, at %d st:%d\n", |
| 2090 | sample_duration, i, c->fc->nb_streams-1); |
| 2091 | sample_duration = 1; |
| 2092 | } |
| 2093 | if (sample_count < 0) { |
| 2094 | av_log(c->fc, AV_LOG_ERROR, "Invalid sample_count=%d\n", sample_count); |
| 2095 | return AVERROR_INVALIDDATA; |
| 2096 | } |
| 2097 | sc->stts_data[i].count= sample_count; |
| 2098 | sc->stts_data[i].duration= sample_duration; |
| 2099 | |
| 2100 | av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n", |
| 2101 | sample_count, sample_duration); |
| 2102 | |
| 2103 | if ( i+1 == entries |
| 2104 | && i |
| 2105 | && sample_count == 1 |
| 2106 | && total_sample_count > 100 |
| 2107 | && sample_duration/10 > duration / total_sample_count) |
| 2108 | sample_duration = duration / total_sample_count; |
| 2109 | duration+=(int64_t)sample_duration*sample_count; |
| 2110 | total_sample_count+=sample_count; |
| 2111 | } |
| 2112 | |
| 2113 | sc->stts_count = i; |
| 2114 | |
| 2115 | sc->duration_for_fps += duration; |
| 2116 | sc->nb_frames_for_fps += total_sample_count; |
| 2117 | |
| 2118 | if (pb->eof_reached) |
| 2119 | return AVERROR_EOF; |
| 2120 | |
| 2121 | st->nb_frames= total_sample_count; |
| 2122 | if (duration) |
| 2123 | st->duration= duration; |
| 2124 | sc->track_end = duration; |
| 2125 | return 0; |
| 2126 | } |
| 2127 | |
| 2128 | static void mov_update_dts_shift(MOVStreamContext *sc, int duration) |
| 2129 | { |
| 2130 | if (duration < 0) { |
| 2131 | sc->dts_shift = FFMAX(sc->dts_shift, -duration); |
| 2132 | } |
| 2133 | } |
| 2134 | |
| 2135 | static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 2136 | { |
| 2137 | AVStream *st; |
| 2138 | MOVStreamContext *sc; |
| 2139 | unsigned int i, entries; |
| 2140 | |
| 2141 | if (c->fc->nb_streams < 1) |
| 2142 | return 0; |
| 2143 | st = c->fc->streams[c->fc->nb_streams-1]; |
| 2144 | sc = st->priv_data; |
| 2145 | |
| 2146 | avio_r8(pb); /* version */ |
| 2147 | avio_rb24(pb); /* flags */ |
| 2148 | entries = avio_rb32(pb); |
| 2149 | |
| 2150 | av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries); |
| 2151 | |
| 2152 | if (!entries) |
| 2153 | return 0; |
| 2154 | if (entries >= UINT_MAX / sizeof(*sc->ctts_data)) |
| 2155 | return AVERROR_INVALIDDATA; |
| 2156 | sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data)); |
| 2157 | if (!sc->ctts_data) |
| 2158 | return AVERROR(ENOMEM); |
| 2159 | |
| 2160 | for (i = 0; i < entries && !pb->eof_reached; i++) { |
| 2161 | int count =avio_rb32(pb); |
| 2162 | int duration =avio_rb32(pb); |
| 2163 | |
| 2164 | sc->ctts_data[i].count = count; |
| 2165 | sc->ctts_data[i].duration= duration; |
| 2166 | |
| 2167 | av_dlog(c->fc, "count=%d, duration=%d\n", |
| 2168 | count, duration); |
| 2169 | |
| 2170 | if (FFABS(duration) > (1<<28) && i+2<entries) { |
| 2171 | av_log(c->fc, AV_LOG_WARNING, "CTTS invalid\n"); |
| 2172 | av_freep(&sc->ctts_data); |
| 2173 | sc->ctts_count = 0; |
| 2174 | return 0; |
| 2175 | } |
| 2176 | |
| 2177 | if (i+2<entries) |
| 2178 | mov_update_dts_shift(sc, duration); |
| 2179 | } |
| 2180 | |
| 2181 | sc->ctts_count = i; |
| 2182 | |
| 2183 | if (pb->eof_reached) |
| 2184 | return AVERROR_EOF; |
| 2185 | |
| 2186 | av_dlog(c->fc, "dts shift %d\n", sc->dts_shift); |
| 2187 | |
| 2188 | return 0; |
| 2189 | } |
| 2190 | |
| 2191 | static int mov_read_sbgp(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 2192 | { |
| 2193 | AVStream *st; |
| 2194 | MOVStreamContext *sc; |
| 2195 | unsigned int i, entries; |
| 2196 | uint8_t version; |
| 2197 | uint32_t grouping_type; |
| 2198 | |
| 2199 | if (c->fc->nb_streams < 1) |
| 2200 | return 0; |
| 2201 | st = c->fc->streams[c->fc->nb_streams-1]; |
| 2202 | sc = st->priv_data; |
| 2203 | |
| 2204 | version = avio_r8(pb); /* version */ |
| 2205 | avio_rb24(pb); /* flags */ |
| 2206 | grouping_type = avio_rl32(pb); |
| 2207 | if (grouping_type != MKTAG( 'r','a','p',' ')) |
| 2208 | return 0; /* only support 'rap ' grouping */ |
| 2209 | if (version == 1) |
| 2210 | avio_rb32(pb); /* grouping_type_parameter */ |
| 2211 | |
| 2212 | entries = avio_rb32(pb); |
| 2213 | if (!entries) |
| 2214 | return 0; |
| 2215 | if (sc->rap_group) |
| 2216 | av_log(c->fc, AV_LOG_WARNING, "Duplicated SBGP atom\n"); |
| 2217 | av_free(sc->rap_group); |
| 2218 | sc->rap_group_count = 0; |
| 2219 | sc->rap_group = av_malloc_array(entries, sizeof(*sc->rap_group)); |
| 2220 | if (!sc->rap_group) |
| 2221 | return AVERROR(ENOMEM); |
| 2222 | |
| 2223 | for (i = 0; i < entries && !pb->eof_reached; i++) { |
| 2224 | sc->rap_group[i].count = avio_rb32(pb); /* sample_count */ |
| 2225 | sc->rap_group[i].index = avio_rb32(pb); /* group_description_index */ |
| 2226 | } |
| 2227 | |
| 2228 | sc->rap_group_count = i; |
| 2229 | |
| 2230 | return pb->eof_reached ? AVERROR_EOF : 0; |
| 2231 | } |
| 2232 | |
| 2233 | static void mov_build_index(MOVContext *mov, AVStream *st) |
| 2234 | { |
| 2235 | MOVStreamContext *sc = st->priv_data; |
| 2236 | int64_t current_offset; |
| 2237 | int64_t current_dts = 0; |
| 2238 | unsigned int stts_index = 0; |
| 2239 | unsigned int stsc_index = 0; |
| 2240 | unsigned int stss_index = 0; |
| 2241 | unsigned int stps_index = 0; |
| 2242 | unsigned int i, j; |
| 2243 | uint64_t stream_size = 0; |
| 2244 | |
| 2245 | /* adjust first dts according to edit list */ |
| 2246 | if ((sc->empty_duration || sc->start_time) && mov->time_scale > 0) { |
| 2247 | if (sc->empty_duration) |
| 2248 | sc->empty_duration = av_rescale(sc->empty_duration, sc->time_scale, mov->time_scale); |
| 2249 | sc->time_offset = sc->start_time - sc->empty_duration; |
| 2250 | current_dts = -sc->time_offset; |
| 2251 | if (sc->ctts_count>0 && sc->stts_count>0 && |
| 2252 | sc->ctts_data[0].duration / FFMAX(sc->stts_data[0].duration, 1) > 16) { |
| 2253 | /* more than 16 frames delay, dts are likely wrong |
| 2254 | this happens with files created by iMovie */ |
| 2255 | sc->wrong_dts = 1; |
| 2256 | st->codec->has_b_frames = 1; |
| 2257 | } |
| 2258 | } |
| 2259 | |
| 2260 | /* only use old uncompressed audio chunk demuxing when stts specifies it */ |
| 2261 | if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO && |
| 2262 | sc->stts_count == 1 && sc->stts_data[0].duration == 1)) { |
| 2263 | unsigned int current_sample = 0; |
| 2264 | unsigned int stts_sample = 0; |
| 2265 | unsigned int sample_size; |
| 2266 | unsigned int distance = 0; |
| 2267 | unsigned int rap_group_index = 0; |
| 2268 | unsigned int rap_group_sample = 0; |
| 2269 | int rap_group_present = sc->rap_group_count && sc->rap_group; |
| 2270 | int key_off = (sc->keyframe_count && sc->keyframes[0] > 0) || (sc->stps_count && sc->stps_data[0] > 0); |
| 2271 | |
| 2272 | current_dts -= sc->dts_shift; |
| 2273 | |
| 2274 | if (!sc->sample_count || st->nb_index_entries) |
| 2275 | return; |
| 2276 | if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries) |
| 2277 | return; |
| 2278 | if (av_reallocp_array(&st->index_entries, |
| 2279 | st->nb_index_entries + sc->sample_count, |
| 2280 | sizeof(*st->index_entries)) < 0) { |
| 2281 | st->nb_index_entries = 0; |
| 2282 | return; |
| 2283 | } |
| 2284 | st->index_entries_allocated_size = (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries); |
| 2285 | |
| 2286 | for (i = 0; i < sc->chunk_count; i++) { |
| 2287 | int64_t next_offset = i+1 < sc->chunk_count ? sc->chunk_offsets[i+1] : INT64_MAX; |
| 2288 | current_offset = sc->chunk_offsets[i]; |
| 2289 | while (stsc_index + 1 < sc->stsc_count && |
| 2290 | i + 1 == sc->stsc_data[stsc_index + 1].first) |
| 2291 | stsc_index++; |
| 2292 | |
| 2293 | if (next_offset > current_offset && sc->sample_size>0 && sc->sample_size < sc->stsz_sample_size && |
| 2294 | sc->stsc_data[stsc_index].count * (int64_t)sc->stsz_sample_size > next_offset - current_offset) { |
| 2295 | av_log(mov->fc, AV_LOG_WARNING, "STSZ sample size %d invalid (too large), ignoring\n", sc->stsz_sample_size); |
| 2296 | sc->stsz_sample_size = sc->sample_size; |
| 2297 | } |
| 2298 | if (sc->stsz_sample_size>0 && sc->stsz_sample_size < sc->sample_size) { |
| 2299 | av_log(mov->fc, AV_LOG_WARNING, "STSZ sample size %d invalid (too small), ignoring\n", sc->stsz_sample_size); |
| 2300 | sc->stsz_sample_size = sc->sample_size; |
| 2301 | } |
| 2302 | |
| 2303 | for (j = 0; j < sc->stsc_data[stsc_index].count; j++) { |
| 2304 | int keyframe = 0; |
| 2305 | if (current_sample >= sc->sample_count) { |
| 2306 | av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n"); |
| 2307 | return; |
| 2308 | } |
| 2309 | |
| 2310 | if (!sc->keyframe_absent && (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index])) { |
| 2311 | keyframe = 1; |
| 2312 | if (stss_index + 1 < sc->keyframe_count) |
| 2313 | stss_index++; |
| 2314 | } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) { |
| 2315 | keyframe = 1; |
| 2316 | if (stps_index + 1 < sc->stps_count) |
| 2317 | stps_index++; |
| 2318 | } |
| 2319 | if (rap_group_present && rap_group_index < sc->rap_group_count) { |
| 2320 | if (sc->rap_group[rap_group_index].index > 0) |
| 2321 | keyframe = 1; |
| 2322 | if (++rap_group_sample == sc->rap_group[rap_group_index].count) { |
| 2323 | rap_group_sample = 0; |
| 2324 | rap_group_index++; |
| 2325 | } |
| 2326 | } |
| 2327 | if (sc->keyframe_absent |
| 2328 | && !sc->stps_count |
| 2329 | && !rap_group_present |
| 2330 | && (st->codec->codec_type == AVMEDIA_TYPE_AUDIO || (i==0 && j==0))) |
| 2331 | keyframe = 1; |
| 2332 | if (keyframe) |
| 2333 | distance = 0; |
| 2334 | sample_size = sc->stsz_sample_size > 0 ? sc->stsz_sample_size : sc->sample_sizes[current_sample]; |
| 2335 | if (sc->pseudo_stream_id == -1 || |
| 2336 | sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) { |
| 2337 | AVIndexEntry *e = &st->index_entries[st->nb_index_entries++]; |
| 2338 | e->pos = current_offset; |
| 2339 | e->timestamp = current_dts; |
| 2340 | e->size = sample_size; |
| 2341 | e->min_distance = distance; |
| 2342 | e->flags = keyframe ? AVINDEX_KEYFRAME : 0; |
| 2343 | av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", " |
| 2344 | "size %d, distance %d, keyframe %d\n", st->index, current_sample, |
| 2345 | current_offset, current_dts, sample_size, distance, keyframe); |
| 2346 | if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && st->nb_index_entries < 100) |
| 2347 | ff_rfps_add_frame(mov->fc, st, current_dts); |
| 2348 | } |
| 2349 | |
| 2350 | current_offset += sample_size; |
| 2351 | stream_size += sample_size; |
| 2352 | current_dts += sc->stts_data[stts_index].duration; |
| 2353 | distance++; |
| 2354 | stts_sample++; |
| 2355 | current_sample++; |
| 2356 | if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) { |
| 2357 | stts_sample = 0; |
| 2358 | stts_index++; |
| 2359 | } |
| 2360 | } |
| 2361 | } |
| 2362 | if (st->duration > 0) |
| 2363 | st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration; |
| 2364 | } else { |
| 2365 | unsigned chunk_samples, total = 0; |
| 2366 | |
| 2367 | // compute total chunk count |
| 2368 | for (i = 0; i < sc->stsc_count; i++) { |
| 2369 | unsigned count, chunk_count; |
| 2370 | |
| 2371 | chunk_samples = sc->stsc_data[i].count; |
| 2372 | if (i != sc->stsc_count - 1 && |
| 2373 | sc->samples_per_frame && chunk_samples % sc->samples_per_frame) { |
| 2374 | av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n"); |
| 2375 | return; |
| 2376 | } |
| 2377 | |
| 2378 | if (sc->samples_per_frame >= 160) { // gsm |
| 2379 | count = chunk_samples / sc->samples_per_frame; |
| 2380 | } else if (sc->samples_per_frame > 1) { |
| 2381 | unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame; |
| 2382 | count = (chunk_samples+samples-1) / samples; |
| 2383 | } else { |
| 2384 | count = (chunk_samples+1023) / 1024; |
| 2385 | } |
| 2386 | |
| 2387 | if (i < sc->stsc_count - 1) |
| 2388 | chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first; |
| 2389 | else |
| 2390 | chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1); |
| 2391 | total += chunk_count * count; |
| 2392 | } |
| 2393 | |
| 2394 | av_dlog(mov->fc, "chunk count %d\n", total); |
| 2395 | if (total >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries) |
| 2396 | return; |
| 2397 | if (av_reallocp_array(&st->index_entries, |
| 2398 | st->nb_index_entries + total, |
| 2399 | sizeof(*st->index_entries)) < 0) { |
| 2400 | st->nb_index_entries = 0; |
| 2401 | return; |
| 2402 | } |
| 2403 | st->index_entries_allocated_size = (st->nb_index_entries + total) * sizeof(*st->index_entries); |
| 2404 | |
| 2405 | // populate index |
| 2406 | for (i = 0; i < sc->chunk_count; i++) { |
| 2407 | current_offset = sc->chunk_offsets[i]; |
| 2408 | if (stsc_index + 1 < sc->stsc_count && |
| 2409 | i + 1 == sc->stsc_data[stsc_index + 1].first) |
| 2410 | stsc_index++; |
| 2411 | chunk_samples = sc->stsc_data[stsc_index].count; |
| 2412 | |
| 2413 | while (chunk_samples > 0) { |
| 2414 | AVIndexEntry *e; |
| 2415 | unsigned size, samples; |
| 2416 | |
| 2417 | if (sc->samples_per_frame >= 160) { // gsm |
| 2418 | samples = sc->samples_per_frame; |
| 2419 | size = sc->bytes_per_frame; |
| 2420 | } else { |
| 2421 | if (sc->samples_per_frame > 1) { |
| 2422 | samples = FFMIN((1024 / sc->samples_per_frame)* |
| 2423 | sc->samples_per_frame, chunk_samples); |
| 2424 | size = (samples / sc->samples_per_frame) * sc->bytes_per_frame; |
| 2425 | } else { |
| 2426 | samples = FFMIN(1024, chunk_samples); |
| 2427 | size = samples * sc->sample_size; |
| 2428 | } |
| 2429 | } |
| 2430 | |
| 2431 | if (st->nb_index_entries >= total) { |
| 2432 | av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total); |
| 2433 | return; |
| 2434 | } |
| 2435 | e = &st->index_entries[st->nb_index_entries++]; |
| 2436 | e->pos = current_offset; |
| 2437 | e->timestamp = current_dts; |
| 2438 | e->size = size; |
| 2439 | e->min_distance = 0; |
| 2440 | e->flags = AVINDEX_KEYFRAME; |
| 2441 | av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", " |
| 2442 | "size %d, duration %d\n", st->index, i, current_offset, current_dts, |
| 2443 | size, samples); |
| 2444 | |
| 2445 | current_offset += size; |
| 2446 | current_dts += samples; |
| 2447 | chunk_samples -= samples; |
| 2448 | } |
| 2449 | } |
| 2450 | } |
| 2451 | } |
| 2452 | |
| 2453 | static int mov_open_dref(AVIOContext **pb, const char *src, MOVDref *ref, |
| 2454 | AVIOInterruptCB *int_cb, int use_absolute_path, AVFormatContext *fc) |
| 2455 | { |
| 2456 | /* try relative path, we do not try the absolute because it can leak information about our |
| 2457 | system to an attacker */ |
| 2458 | if (ref->nlvl_to > 0 && ref->nlvl_from > 0) { |
| 2459 | char filename[1024]; |
| 2460 | const char *src_path; |
| 2461 | int i, l; |
| 2462 | |
| 2463 | /* find a source dir */ |
| 2464 | src_path = strrchr(src, '/'); |
| 2465 | if (src_path) |
| 2466 | src_path++; |
| 2467 | else |
| 2468 | src_path = src; |
| 2469 | |
| 2470 | /* find a next level down to target */ |
| 2471 | for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--) |
| 2472 | if (ref->path[l] == '/') { |
| 2473 | if (i == ref->nlvl_to - 1) |
| 2474 | break; |
| 2475 | else |
| 2476 | i++; |
| 2477 | } |
| 2478 | |
| 2479 | /* compose filename if next level down to target was found */ |
| 2480 | if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) { |
| 2481 | memcpy(filename, src, src_path - src); |
| 2482 | filename[src_path - src] = 0; |
| 2483 | |
| 2484 | for (i = 1; i < ref->nlvl_from; i++) |
| 2485 | av_strlcat(filename, "../", 1024); |
| 2486 | |
| 2487 | av_strlcat(filename, ref->path + l + 1, 1024); |
| 2488 | |
| 2489 | if (!avio_open2(pb, filename, AVIO_FLAG_READ, int_cb, NULL)) |
| 2490 | return 0; |
| 2491 | } |
| 2492 | } else if (use_absolute_path) { |
| 2493 | av_log(fc, AV_LOG_WARNING, "Using absolute path on user request, " |
| 2494 | "this is a possible security issue\n"); |
| 2495 | if (!avio_open2(pb, ref->path, AVIO_FLAG_READ, int_cb, NULL)) |
| 2496 | return 0; |
| 2497 | } |
| 2498 | |
| 2499 | return AVERROR(ENOENT); |
| 2500 | } |
| 2501 | |
| 2502 | static void fix_timescale(MOVContext *c, MOVStreamContext *sc) |
| 2503 | { |
| 2504 | if (sc->time_scale <= 0) { |
| 2505 | av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", sc->ffindex); |
| 2506 | sc->time_scale = c->time_scale; |
| 2507 | if (sc->time_scale <= 0) |
| 2508 | sc->time_scale = 1; |
| 2509 | } |
| 2510 | } |
| 2511 | |
| 2512 | static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 2513 | { |
| 2514 | AVStream *st; |
| 2515 | MOVStreamContext *sc; |
| 2516 | int ret; |
| 2517 | |
| 2518 | st = avformat_new_stream(c->fc, NULL); |
| 2519 | if (!st) return AVERROR(ENOMEM); |
| 2520 | st->id = c->fc->nb_streams; |
| 2521 | sc = av_mallocz(sizeof(MOVStreamContext)); |
| 2522 | if (!sc) return AVERROR(ENOMEM); |
| 2523 | |
| 2524 | st->priv_data = sc; |
| 2525 | st->codec->codec_type = AVMEDIA_TYPE_DATA; |
| 2526 | sc->ffindex = st->index; |
| 2527 | |
| 2528 | if ((ret = mov_read_default(c, pb, atom)) < 0) |
| 2529 | return ret; |
| 2530 | |
| 2531 | /* sanity checks */ |
| 2532 | if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count || |
| 2533 | (!sc->sample_size && !sc->sample_count))) { |
| 2534 | av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n", |
| 2535 | st->index); |
| 2536 | return 0; |
| 2537 | } |
| 2538 | |
| 2539 | fix_timescale(c, sc); |
| 2540 | |
| 2541 | avpriv_set_pts_info(st, 64, 1, sc->time_scale); |
| 2542 | |
| 2543 | mov_build_index(c, st); |
| 2544 | |
| 2545 | if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) { |
| 2546 | MOVDref *dref = &sc->drefs[sc->dref_id - 1]; |
| 2547 | if (mov_open_dref(&sc->pb, c->fc->filename, dref, &c->fc->interrupt_callback, |
| 2548 | c->use_absolute_path, c->fc) < 0) |
| 2549 | av_log(c->fc, AV_LOG_ERROR, |
| 2550 | "stream %d, error opening alias: path='%s', dir='%s', " |
| 2551 | "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n", |
| 2552 | st->index, dref->path, dref->dir, dref->filename, |
| 2553 | dref->volume, dref->nlvl_from, dref->nlvl_to); |
| 2554 | } else { |
| 2555 | sc->pb = c->fc->pb; |
| 2556 | sc->pb_is_copied = 1; |
| 2557 | } |
| 2558 | |
| 2559 | if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) { |
| 2560 | if (!st->sample_aspect_ratio.num && |
| 2561 | (st->codec->width != sc->width || st->codec->height != sc->height)) { |
| 2562 | st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) / |
| 2563 | ((double)st->codec->width * sc->height), INT_MAX); |
| 2564 | } |
| 2565 | |
| 2566 | #if FF_API_R_FRAME_RATE |
| 2567 | if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1)) |
| 2568 | av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, |
| 2569 | sc->time_scale, sc->stts_data[0].duration, INT_MAX); |
| 2570 | #endif |
| 2571 | } |
| 2572 | |
| 2573 | // done for ai5q, ai52, ai55, ai1q, ai12 and ai15. |
| 2574 | if (!st->codec->extradata_size && st->codec->codec_id == AV_CODEC_ID_H264 && |
| 2575 | TAG_IS_AVCI(st->codec->codec_tag)) { |
| 2576 | ret = ff_generate_avci_extradata(st); |
| 2577 | if (ret < 0) |
| 2578 | return ret; |
| 2579 | } |
| 2580 | |
| 2581 | switch (st->codec->codec_id) { |
| 2582 | #if CONFIG_H261_DECODER |
| 2583 | case AV_CODEC_ID_H261: |
| 2584 | #endif |
| 2585 | #if CONFIG_H263_DECODER |
| 2586 | case AV_CODEC_ID_H263: |
| 2587 | #endif |
| 2588 | #if CONFIG_MPEG4_DECODER |
| 2589 | case AV_CODEC_ID_MPEG4: |
| 2590 | #endif |
| 2591 | st->codec->width = 0; /* let decoder init width/height */ |
| 2592 | st->codec->height= 0; |
| 2593 | break; |
| 2594 | } |
| 2595 | |
| 2596 | /* Do not need those anymore. */ |
| 2597 | av_freep(&sc->chunk_offsets); |
| 2598 | av_freep(&sc->stsc_data); |
| 2599 | av_freep(&sc->sample_sizes); |
| 2600 | av_freep(&sc->keyframes); |
| 2601 | av_freep(&sc->stts_data); |
| 2602 | av_freep(&sc->stps_data); |
| 2603 | av_freep(&sc->rap_group); |
| 2604 | |
| 2605 | return 0; |
| 2606 | } |
| 2607 | |
| 2608 | static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 2609 | { |
| 2610 | int ret; |
| 2611 | c->itunes_metadata = 1; |
| 2612 | ret = mov_read_default(c, pb, atom); |
| 2613 | c->itunes_metadata = 0; |
| 2614 | return ret; |
| 2615 | } |
| 2616 | |
| 2617 | static int mov_read_custom_2plus(MOVContext *c, AVIOContext *pb, int size) |
| 2618 | { |
| 2619 | int64_t end = avio_tell(pb) + size; |
| 2620 | uint8_t *key = NULL, *val = NULL; |
| 2621 | int i; |
| 2622 | AVStream *st; |
| 2623 | MOVStreamContext *sc; |
| 2624 | |
| 2625 | if (c->fc->nb_streams < 1) |
| 2626 | return 0; |
| 2627 | st = c->fc->streams[c->fc->nb_streams-1]; |
| 2628 | sc = st->priv_data; |
| 2629 | |
| 2630 | for (i = 0; i < 2; i++) { |
| 2631 | uint8_t **p; |
| 2632 | uint32_t len, tag; |
| 2633 | |
| 2634 | if (end - avio_tell(pb) <= 12) |
| 2635 | break; |
| 2636 | |
| 2637 | len = avio_rb32(pb); |
| 2638 | tag = avio_rl32(pb); |
| 2639 | avio_skip(pb, 4); // flags |
| 2640 | |
| 2641 | if (len < 12 || len - 12 > end - avio_tell(pb)) |
| 2642 | break; |
| 2643 | len -= 12; |
| 2644 | |
| 2645 | if (tag == MKTAG('n', 'a', 'm', 'e')) |
| 2646 | p = &key; |
| 2647 | else if (tag == MKTAG('d', 'a', 't', 'a') && len > 4) { |
| 2648 | avio_skip(pb, 4); |
| 2649 | len -= 4; |
| 2650 | p = &val; |
| 2651 | } else |
| 2652 | break; |
| 2653 | |
| 2654 | *p = av_malloc(len + 1); |
| 2655 | if (!*p) |
| 2656 | break; |
| 2657 | avio_read(pb, *p, len); |
| 2658 | (*p)[len] = 0; |
| 2659 | } |
| 2660 | |
| 2661 | if (key && val) { |
| 2662 | if (strcmp(key, "iTunSMPB") == 0) { |
| 2663 | int priming, remainder, samples; |
| 2664 | if(sscanf(val, "%*X %X %X %X", &priming, &remainder, &samples) == 3){ |
| 2665 | if(priming>0 && priming<16384) |
| 2666 | sc->start_pad = priming; |
| 2667 | } |
| 2668 | } |
| 2669 | if (strcmp(key, "cdec") != 0) { |
| 2670 | av_dict_set(&c->fc->metadata, key, val, |
| 2671 | AV_DICT_DONT_STRDUP_KEY | AV_DICT_DONT_STRDUP_VAL); |
| 2672 | key = val = NULL; |
| 2673 | } |
| 2674 | } |
| 2675 | |
| 2676 | avio_seek(pb, end, SEEK_SET); |
| 2677 | av_freep(&key); |
| 2678 | av_freep(&val); |
| 2679 | return 0; |
| 2680 | } |
| 2681 | |
| 2682 | static int mov_read_custom(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 2683 | { |
| 2684 | int64_t end = avio_tell(pb) + atom.size; |
| 2685 | uint32_t tag, len; |
| 2686 | |
| 2687 | if (atom.size < 8) |
| 2688 | goto fail; |
| 2689 | |
| 2690 | len = avio_rb32(pb); |
| 2691 | tag = avio_rl32(pb); |
| 2692 | |
| 2693 | if (len > atom.size) |
| 2694 | goto fail; |
| 2695 | |
| 2696 | if (tag == MKTAG('m', 'e', 'a', 'n') && len > 12) { |
| 2697 | uint8_t domain[128]; |
| 2698 | int domain_len; |
| 2699 | |
| 2700 | avio_skip(pb, 4); // flags |
| 2701 | len -= 12; |
| 2702 | |
| 2703 | domain_len = avio_get_str(pb, len, domain, sizeof(domain)); |
| 2704 | avio_skip(pb, len - domain_len); |
| 2705 | return mov_read_custom_2plus(c, pb, end - avio_tell(pb)); |
| 2706 | } |
| 2707 | |
| 2708 | fail: |
| 2709 | av_log(c->fc, AV_LOG_VERBOSE, |
| 2710 | "Unhandled or malformed custom metadata of size %"PRId64"\n", atom.size); |
| 2711 | return 0; |
| 2712 | } |
| 2713 | |
| 2714 | static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 2715 | { |
| 2716 | while (atom.size > 8) { |
| 2717 | uint32_t tag = avio_rl32(pb); |
| 2718 | atom.size -= 4; |
| 2719 | if (tag == MKTAG('h','d','l','r')) { |
| 2720 | avio_seek(pb, -8, SEEK_CUR); |
| 2721 | atom.size += 8; |
| 2722 | return mov_read_default(c, pb, atom); |
| 2723 | } |
| 2724 | } |
| 2725 | return 0; |
| 2726 | } |
| 2727 | |
| 2728 | static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 2729 | { |
| 2730 | int i; |
| 2731 | int width; |
| 2732 | int height; |
| 2733 | int64_t disp_transform[2]; |
| 2734 | int display_matrix[3][3]; |
| 2735 | AVStream *st; |
| 2736 | MOVStreamContext *sc; |
| 2737 | int version; |
| 2738 | int flags; |
| 2739 | |
| 2740 | if (c->fc->nb_streams < 1) |
| 2741 | return 0; |
| 2742 | st = c->fc->streams[c->fc->nb_streams-1]; |
| 2743 | sc = st->priv_data; |
| 2744 | |
| 2745 | version = avio_r8(pb); |
| 2746 | flags = avio_rb24(pb); |
| 2747 | st->disposition |= (flags & MOV_TKHD_FLAG_ENABLED) ? AV_DISPOSITION_DEFAULT : 0; |
| 2748 | |
| 2749 | if (version == 1) { |
| 2750 | avio_rb64(pb); |
| 2751 | avio_rb64(pb); |
| 2752 | } else { |
| 2753 | avio_rb32(pb); /* creation time */ |
| 2754 | avio_rb32(pb); /* modification time */ |
| 2755 | } |
| 2756 | st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/ |
| 2757 | avio_rb32(pb); /* reserved */ |
| 2758 | |
| 2759 | /* highlevel (considering edits) duration in movie timebase */ |
| 2760 | (version == 1) ? avio_rb64(pb) : avio_rb32(pb); |
| 2761 | avio_rb32(pb); /* reserved */ |
| 2762 | avio_rb32(pb); /* reserved */ |
| 2763 | |
| 2764 | avio_rb16(pb); /* layer */ |
| 2765 | avio_rb16(pb); /* alternate group */ |
| 2766 | avio_rb16(pb); /* volume */ |
| 2767 | avio_rb16(pb); /* reserved */ |
| 2768 | |
| 2769 | //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2) |
| 2770 | // they're kept in fixed point format through all calculations |
| 2771 | // save u,v,z to store the whole matrix in the AV_PKT_DATA_DISPLAYMATRIX |
| 2772 | // side data, but the scale factor is not needed to calculate aspect ratio |
| 2773 | for (i = 0; i < 3; i++) { |
| 2774 | display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point |
| 2775 | display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point |
| 2776 | display_matrix[i][2] = avio_rb32(pb); // 2.30 fixed point |
| 2777 | } |
| 2778 | |
| 2779 | width = avio_rb32(pb); // 16.16 fixed point track width |
| 2780 | height = avio_rb32(pb); // 16.16 fixed point track height |
| 2781 | sc->width = width >> 16; |
| 2782 | sc->height = height >> 16; |
| 2783 | |
| 2784 | // save the matrix and add rotate metadata when it is not the default |
| 2785 | // identity |
| 2786 | if (display_matrix[0][0] != (1 << 16) || |
| 2787 | display_matrix[1][1] != (1 << 16) || |
| 2788 | display_matrix[2][2] != (1 << 30) || |
| 2789 | display_matrix[0][1] || display_matrix[0][2] || |
| 2790 | display_matrix[1][0] || display_matrix[1][2] || |
| 2791 | display_matrix[2][0] || display_matrix[2][1]) { |
| 2792 | int i, j; |
| 2793 | double rotate; |
| 2794 | |
| 2795 | av_freep(&sc->display_matrix); |
| 2796 | sc->display_matrix = av_malloc(sizeof(int32_t) * 9); |
| 2797 | if (!sc->display_matrix) |
| 2798 | return AVERROR(ENOMEM); |
| 2799 | |
| 2800 | for (i = 0; i < 3; i++) |
| 2801 | for (j = 0; j < 3; j++) |
| 2802 | sc->display_matrix[i * 3 + j] = display_matrix[j][i]; |
| 2803 | |
| 2804 | rotate = av_display_rotation_get(sc->display_matrix); |
| 2805 | if (!isnan(rotate)) { |
| 2806 | char rotate_buf[64]; |
| 2807 | rotate = -rotate; |
| 2808 | if (rotate < 0) // for backward compatibility |
| 2809 | rotate += 360; |
| 2810 | snprintf(rotate_buf, sizeof(rotate_buf), "%g", rotate); |
| 2811 | av_dict_set(&st->metadata, "rotate", rotate_buf, 0); |
| 2812 | } |
| 2813 | } |
| 2814 | |
| 2815 | // transform the display width/height according to the matrix |
| 2816 | // skip this if the display matrix is the default identity matrix |
| 2817 | // or if it is rotating the picture, ex iPhone 3GS |
| 2818 | // to keep the same scale, use [width height 1<<16] |
| 2819 | if (width && height && |
| 2820 | ((display_matrix[0][0] != 65536 || |
| 2821 | display_matrix[1][1] != 65536) && |
| 2822 | !display_matrix[0][1] && |
| 2823 | !display_matrix[1][0] && |
| 2824 | !display_matrix[2][0] && !display_matrix[2][1])) { |
| 2825 | for (i = 0; i < 2; i++) |
| 2826 | disp_transform[i] = |
| 2827 | (int64_t) width * display_matrix[0][i] + |
| 2828 | (int64_t) height * display_matrix[1][i] + |
| 2829 | ((int64_t) display_matrix[2][i] << 16); |
| 2830 | |
| 2831 | //sample aspect ratio is new width/height divided by old width/height |
| 2832 | st->sample_aspect_ratio = av_d2q( |
| 2833 | ((double) disp_transform[0] * height) / |
| 2834 | ((double) disp_transform[1] * width), INT_MAX); |
| 2835 | } |
| 2836 | return 0; |
| 2837 | } |
| 2838 | |
| 2839 | static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 2840 | { |
| 2841 | MOVFragment *frag = &c->fragment; |
| 2842 | MOVTrackExt *trex = NULL; |
| 2843 | MOVFragmentIndex* index = NULL; |
| 2844 | int flags, track_id, i; |
| 2845 | |
| 2846 | avio_r8(pb); /* version */ |
| 2847 | flags = avio_rb24(pb); |
| 2848 | |
| 2849 | track_id = avio_rb32(pb); |
| 2850 | if (!track_id) |
| 2851 | return AVERROR_INVALIDDATA; |
| 2852 | frag->track_id = track_id; |
| 2853 | for (i = 0; i < c->trex_count; i++) |
| 2854 | if (c->trex_data[i].track_id == frag->track_id) { |
| 2855 | trex = &c->trex_data[i]; |
| 2856 | break; |
| 2857 | } |
| 2858 | if (!trex) { |
| 2859 | av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n"); |
| 2860 | return AVERROR_INVALIDDATA; |
| 2861 | } |
| 2862 | for (i = 0; i < c->fragment_index_count; i++) { |
| 2863 | MOVFragmentIndex* candidate = c->fragment_index_data[i]; |
| 2864 | if (candidate->track_id == frag->track_id) { |
| 2865 | av_log(c->fc, AV_LOG_DEBUG, |
| 2866 | "found fragment index for track %u\n", frag->track_id); |
| 2867 | index = candidate; |
| 2868 | break; |
| 2869 | } |
| 2870 | } |
| 2871 | |
| 2872 | frag->base_data_offset = flags & MOV_TFHD_BASE_DATA_OFFSET ? |
| 2873 | avio_rb64(pb) : flags & MOV_TFHD_DEFAULT_BASE_IS_MOOF ? |
| 2874 | frag->moof_offset : frag->implicit_offset; |
| 2875 | frag->stsd_id = flags & MOV_TFHD_STSD_ID ? avio_rb32(pb) : trex->stsd_id; |
| 2876 | |
| 2877 | frag->duration = flags & MOV_TFHD_DEFAULT_DURATION ? |
| 2878 | avio_rb32(pb) : trex->duration; |
| 2879 | frag->size = flags & MOV_TFHD_DEFAULT_SIZE ? |
| 2880 | avio_rb32(pb) : trex->size; |
| 2881 | frag->flags = flags & MOV_TFHD_DEFAULT_FLAGS ? |
| 2882 | avio_rb32(pb) : trex->flags; |
| 2883 | frag->time = AV_NOPTS_VALUE; |
| 2884 | if (index) { |
| 2885 | int i, found = 0; |
| 2886 | for (i = index->current_item; i < index->item_count; i++) { |
| 2887 | if (frag->implicit_offset == index->items[i].moof_offset) { |
| 2888 | av_log(c->fc, AV_LOG_DEBUG, "found fragment index entry " |
| 2889 | "for track %u and moof_offset %"PRId64"\n", |
| 2890 | frag->track_id, index->items[i].moof_offset); |
| 2891 | frag->time = index->items[i].time; |
| 2892 | index->current_item = i + 1; |
| 2893 | found = 1; |
| 2894 | } |
| 2895 | } |
| 2896 | if (!found) { |
| 2897 | av_log(c->fc, AV_LOG_WARNING, "track %u has a fragment index " |
| 2898 | "but it doesn't have an (in-order) entry for moof_offset " |
| 2899 | "%"PRId64"\n", frag->track_id, frag->implicit_offset); |
| 2900 | } |
| 2901 | } |
| 2902 | av_dlog(c->fc, "frag flags 0x%x\n", frag->flags); |
| 2903 | return 0; |
| 2904 | } |
| 2905 | |
| 2906 | static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 2907 | { |
| 2908 | c->chapter_track = avio_rb32(pb); |
| 2909 | return 0; |
| 2910 | } |
| 2911 | |
| 2912 | static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 2913 | { |
| 2914 | MOVTrackExt *trex; |
| 2915 | int err; |
| 2916 | |
| 2917 | if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data)) |
| 2918 | return AVERROR_INVALIDDATA; |
| 2919 | if ((err = av_reallocp_array(&c->trex_data, c->trex_count + 1, |
| 2920 | sizeof(*c->trex_data))) < 0) { |
| 2921 | c->trex_count = 0; |
| 2922 | return err; |
| 2923 | } |
| 2924 | |
| 2925 | c->fc->duration = AV_NOPTS_VALUE; // the duration from mvhd is not representing the whole file when fragments are used. |
| 2926 | |
| 2927 | trex = &c->trex_data[c->trex_count++]; |
| 2928 | avio_r8(pb); /* version */ |
| 2929 | avio_rb24(pb); /* flags */ |
| 2930 | trex->track_id = avio_rb32(pb); |
| 2931 | trex->stsd_id = avio_rb32(pb); |
| 2932 | trex->duration = avio_rb32(pb); |
| 2933 | trex->size = avio_rb32(pb); |
| 2934 | trex->flags = avio_rb32(pb); |
| 2935 | return 0; |
| 2936 | } |
| 2937 | |
| 2938 | static int mov_read_tfdt(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 2939 | { |
| 2940 | MOVFragment *frag = &c->fragment; |
| 2941 | AVStream *st = NULL; |
| 2942 | MOVStreamContext *sc; |
| 2943 | int version, i; |
| 2944 | |
| 2945 | for (i = 0; i < c->fc->nb_streams; i++) { |
| 2946 | if (c->fc->streams[i]->id == frag->track_id) { |
| 2947 | st = c->fc->streams[i]; |
| 2948 | break; |
| 2949 | } |
| 2950 | } |
| 2951 | if (!st) { |
| 2952 | av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id); |
| 2953 | return AVERROR_INVALIDDATA; |
| 2954 | } |
| 2955 | sc = st->priv_data; |
| 2956 | if (sc->pseudo_stream_id + 1 != frag->stsd_id) |
| 2957 | return 0; |
| 2958 | version = avio_r8(pb); |
| 2959 | avio_rb24(pb); /* flags */ |
| 2960 | if (version) { |
| 2961 | sc->track_end = avio_rb64(pb); |
| 2962 | } else { |
| 2963 | sc->track_end = avio_rb32(pb); |
| 2964 | } |
| 2965 | return 0; |
| 2966 | } |
| 2967 | |
| 2968 | static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 2969 | { |
| 2970 | MOVFragment *frag = &c->fragment; |
| 2971 | AVStream *st = NULL; |
| 2972 | MOVStreamContext *sc; |
| 2973 | MOVStts *ctts_data; |
| 2974 | uint64_t offset; |
| 2975 | int64_t dts; |
| 2976 | int data_offset = 0; |
| 2977 | unsigned entries, first_sample_flags = frag->flags; |
| 2978 | int flags, distance, i, found_keyframe = 0, err; |
| 2979 | |
| 2980 | for (i = 0; i < c->fc->nb_streams; i++) { |
| 2981 | if (c->fc->streams[i]->id == frag->track_id) { |
| 2982 | st = c->fc->streams[i]; |
| 2983 | break; |
| 2984 | } |
| 2985 | } |
| 2986 | if (!st) { |
| 2987 | av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id); |
| 2988 | return AVERROR_INVALIDDATA; |
| 2989 | } |
| 2990 | sc = st->priv_data; |
| 2991 | if (sc->pseudo_stream_id+1 != frag->stsd_id && sc->pseudo_stream_id != -1) |
| 2992 | return 0; |
| 2993 | avio_r8(pb); /* version */ |
| 2994 | flags = avio_rb24(pb); |
| 2995 | entries = avio_rb32(pb); |
| 2996 | av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries); |
| 2997 | |
| 2998 | /* Always assume the presence of composition time offsets. |
| 2999 | * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following. |
| 3000 | * 1) in the initial movie, there are no samples. |
| 3001 | * 2) in the first movie fragment, there is only one sample without composition time offset. |
| 3002 | * 3) in the subsequent movie fragments, there are samples with composition time offset. */ |
| 3003 | if (!sc->ctts_count && sc->sample_count) |
| 3004 | { |
| 3005 | /* Complement ctts table if moov atom doesn't have ctts atom. */ |
| 3006 | ctts_data = av_realloc(NULL, sizeof(*sc->ctts_data)); |
| 3007 | if (!ctts_data) |
| 3008 | return AVERROR(ENOMEM); |
| 3009 | sc->ctts_data = ctts_data; |
| 3010 | sc->ctts_data[sc->ctts_count].count = sc->sample_count; |
| 3011 | sc->ctts_data[sc->ctts_count].duration = 0; |
| 3012 | sc->ctts_count++; |
| 3013 | } |
| 3014 | if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data)) |
| 3015 | return AVERROR_INVALIDDATA; |
| 3016 | if ((err = av_reallocp_array(&sc->ctts_data, entries + sc->ctts_count, |
| 3017 | sizeof(*sc->ctts_data))) < 0) { |
| 3018 | sc->ctts_count = 0; |
| 3019 | return err; |
| 3020 | } |
| 3021 | if (flags & MOV_TRUN_DATA_OFFSET) data_offset = avio_rb32(pb); |
| 3022 | if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS) first_sample_flags = avio_rb32(pb); |
| 3023 | dts = sc->track_end - sc->time_offset; |
| 3024 | offset = frag->base_data_offset + data_offset; |
| 3025 | distance = 0; |
| 3026 | av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags); |
| 3027 | for (i = 0; i < entries && !pb->eof_reached; i++) { |
| 3028 | unsigned sample_size = frag->size; |
| 3029 | int sample_flags = i ? frag->flags : first_sample_flags; |
| 3030 | unsigned sample_duration = frag->duration; |
| 3031 | int keyframe = 0; |
| 3032 | |
| 3033 | if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(pb); |
| 3034 | if (flags & MOV_TRUN_SAMPLE_SIZE) sample_size = avio_rb32(pb); |
| 3035 | if (flags & MOV_TRUN_SAMPLE_FLAGS) sample_flags = avio_rb32(pb); |
| 3036 | sc->ctts_data[sc->ctts_count].count = 1; |
| 3037 | sc->ctts_data[sc->ctts_count].duration = (flags & MOV_TRUN_SAMPLE_CTS) ? |
| 3038 | avio_rb32(pb) : 0; |
| 3039 | mov_update_dts_shift(sc, sc->ctts_data[sc->ctts_count].duration); |
| 3040 | if (frag->time != AV_NOPTS_VALUE) { |
| 3041 | if (c->use_mfra_for == FF_MOV_FLAG_MFRA_PTS) { |
| 3042 | int64_t pts = frag->time; |
| 3043 | av_log(c->fc, AV_LOG_DEBUG, "found frag time %"PRId64 |
| 3044 | " sc->dts_shift %d ctts.duration %d" |
| 3045 | " sc->time_offset %"PRId64" flags & MOV_TRUN_SAMPLE_CTS %d\n", pts, |
| 3046 | sc->dts_shift, sc->ctts_data[sc->ctts_count].duration, |
| 3047 | sc->time_offset, flags & MOV_TRUN_SAMPLE_CTS); |
| 3048 | dts = pts - sc->dts_shift; |
| 3049 | if (flags & MOV_TRUN_SAMPLE_CTS) { |
| 3050 | dts -= sc->ctts_data[sc->ctts_count].duration; |
| 3051 | } else { |
| 3052 | dts -= sc->time_offset; |
| 3053 | } |
| 3054 | av_log(c->fc, AV_LOG_DEBUG, "calculated into dts %"PRId64"\n", dts); |
| 3055 | } else { |
| 3056 | dts = frag->time; |
| 3057 | av_log(c->fc, AV_LOG_DEBUG, "found frag time %"PRId64 |
| 3058 | ", using it for dts\n", dts); |
| 3059 | } |
| 3060 | frag->time = AV_NOPTS_VALUE; |
| 3061 | } |
| 3062 | sc->ctts_count++; |
| 3063 | if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) |
| 3064 | keyframe = 1; |
| 3065 | else if (!found_keyframe) |
| 3066 | keyframe = found_keyframe = |
| 3067 | !(sample_flags & (MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC | |
| 3068 | MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES)); |
| 3069 | if (keyframe) |
| 3070 | distance = 0; |
| 3071 | av_add_index_entry(st, offset, dts, sample_size, distance, |
| 3072 | keyframe ? AVINDEX_KEYFRAME : 0); |
| 3073 | av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", " |
| 3074 | "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i, |
| 3075 | offset, dts, sample_size, distance, keyframe); |
| 3076 | distance++; |
| 3077 | dts += sample_duration; |
| 3078 | offset += sample_size; |
| 3079 | sc->data_size += sample_size; |
| 3080 | sc->duration_for_fps += sample_duration; |
| 3081 | sc->nb_frames_for_fps ++; |
| 3082 | } |
| 3083 | |
| 3084 | if (pb->eof_reached) |
| 3085 | return AVERROR_EOF; |
| 3086 | |
| 3087 | frag->implicit_offset = offset; |
| 3088 | st->duration = sc->track_end = dts + sc->time_offset; |
| 3089 | return 0; |
| 3090 | } |
| 3091 | |
| 3092 | /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */ |
| 3093 | /* like the files created with Adobe Premiere 5.0, for samples see */ |
| 3094 | /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */ |
| 3095 | static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 3096 | { |
| 3097 | int err; |
| 3098 | |
| 3099 | if (atom.size < 8) |
| 3100 | return 0; /* continue */ |
| 3101 | if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */ |
| 3102 | avio_skip(pb, atom.size - 4); |
| 3103 | return 0; |
| 3104 | } |
| 3105 | atom.type = avio_rl32(pb); |
| 3106 | atom.size -= 8; |
| 3107 | if (atom.type != MKTAG('m','d','a','t')) { |
| 3108 | avio_skip(pb, atom.size); |
| 3109 | return 0; |
| 3110 | } |
| 3111 | err = mov_read_mdat(c, pb, atom); |
| 3112 | return err; |
| 3113 | } |
| 3114 | |
| 3115 | static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 3116 | { |
| 3117 | #if CONFIG_ZLIB |
| 3118 | AVIOContext ctx; |
| 3119 | uint8_t *cmov_data; |
| 3120 | uint8_t *moov_data; /* uncompressed data */ |
| 3121 | long cmov_len, moov_len; |
| 3122 | int ret = -1; |
| 3123 | |
| 3124 | avio_rb32(pb); /* dcom atom */ |
| 3125 | if (avio_rl32(pb) != MKTAG('d','c','o','m')) |
| 3126 | return AVERROR_INVALIDDATA; |
| 3127 | if (avio_rl32(pb) != MKTAG('z','l','i','b')) { |
| 3128 | av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !\n"); |
| 3129 | return AVERROR_INVALIDDATA; |
| 3130 | } |
| 3131 | avio_rb32(pb); /* cmvd atom */ |
| 3132 | if (avio_rl32(pb) != MKTAG('c','m','v','d')) |
| 3133 | return AVERROR_INVALIDDATA; |
| 3134 | moov_len = avio_rb32(pb); /* uncompressed size */ |
| 3135 | cmov_len = atom.size - 6 * 4; |
| 3136 | |
| 3137 | cmov_data = av_malloc(cmov_len); |
| 3138 | if (!cmov_data) |
| 3139 | return AVERROR(ENOMEM); |
| 3140 | moov_data = av_malloc(moov_len); |
| 3141 | if (!moov_data) { |
| 3142 | av_free(cmov_data); |
| 3143 | return AVERROR(ENOMEM); |
| 3144 | } |
| 3145 | avio_read(pb, cmov_data, cmov_len); |
| 3146 | if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK) |
| 3147 | goto free_and_return; |
| 3148 | if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0) |
| 3149 | goto free_and_return; |
| 3150 | atom.type = MKTAG('m','o','o','v'); |
| 3151 | atom.size = moov_len; |
| 3152 | ret = mov_read_default(c, &ctx, atom); |
| 3153 | free_and_return: |
| 3154 | av_free(moov_data); |
| 3155 | av_free(cmov_data); |
| 3156 | return ret; |
| 3157 | #else |
| 3158 | av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n"); |
| 3159 | return AVERROR(ENOSYS); |
| 3160 | #endif |
| 3161 | } |
| 3162 | |
| 3163 | /* edit list atom */ |
| 3164 | static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 3165 | { |
| 3166 | MOVStreamContext *sc; |
| 3167 | int i, edit_count, version, edit_start_index = 0; |
| 3168 | int unsupported = 0; |
| 3169 | |
| 3170 | if (c->fc->nb_streams < 1 || c->ignore_editlist) |
| 3171 | return 0; |
| 3172 | sc = c->fc->streams[c->fc->nb_streams-1]->priv_data; |
| 3173 | |
| 3174 | version = avio_r8(pb); /* version */ |
| 3175 | avio_rb24(pb); /* flags */ |
| 3176 | edit_count = avio_rb32(pb); /* entries */ |
| 3177 | |
| 3178 | if ((uint64_t)edit_count*12+8 > atom.size) |
| 3179 | return AVERROR_INVALIDDATA; |
| 3180 | |
| 3181 | av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count); |
| 3182 | for (i=0; i<edit_count; i++){ |
| 3183 | int64_t time; |
| 3184 | int64_t duration; |
| 3185 | int rate; |
| 3186 | if (version == 1) { |
| 3187 | duration = avio_rb64(pb); |
| 3188 | time = avio_rb64(pb); |
| 3189 | } else { |
| 3190 | duration = avio_rb32(pb); /* segment duration */ |
| 3191 | time = (int32_t)avio_rb32(pb); /* media time */ |
| 3192 | } |
| 3193 | rate = avio_rb32(pb); |
| 3194 | if (i == 0 && time == -1) { |
| 3195 | sc->empty_duration = duration; |
| 3196 | edit_start_index = 1; |
| 3197 | } else if (i == edit_start_index && time >= 0) |
| 3198 | sc->start_time = time; |
| 3199 | else |
| 3200 | unsupported = 1; |
| 3201 | |
| 3202 | av_dlog(c->fc, "duration=%"PRId64" time=%"PRId64" rate=%f\n", |
| 3203 | duration, time, rate / 65536.0); |
| 3204 | } |
| 3205 | |
| 3206 | if (unsupported) |
| 3207 | av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, " |
| 3208 | "a/v desync might occur, patch welcome\n"); |
| 3209 | |
| 3210 | return 0; |
| 3211 | } |
| 3212 | |
| 3213 | static int mov_read_tmcd(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 3214 | { |
| 3215 | MOVStreamContext *sc; |
| 3216 | |
| 3217 | if (c->fc->nb_streams < 1) |
| 3218 | return AVERROR_INVALIDDATA; |
| 3219 | sc = c->fc->streams[c->fc->nb_streams - 1]->priv_data; |
| 3220 | sc->timecode_track = avio_rb32(pb); |
| 3221 | return 0; |
| 3222 | } |
| 3223 | |
| 3224 | static int mov_read_uuid(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 3225 | { |
| 3226 | int ret; |
| 3227 | uint8_t uuid[16]; |
| 3228 | static const uint8_t uuid_isml_manifest[] = { |
| 3229 | 0xa5, 0xd4, 0x0b, 0x30, 0xe8, 0x14, 0x11, 0xdd, |
| 3230 | 0xba, 0x2f, 0x08, 0x00, 0x20, 0x0c, 0x9a, 0x66 |
| 3231 | }; |
| 3232 | |
| 3233 | if (atom.size < sizeof(uuid) || atom.size == INT64_MAX) |
| 3234 | return AVERROR_INVALIDDATA; |
| 3235 | |
| 3236 | ret = avio_read(pb, uuid, sizeof(uuid)); |
| 3237 | if (ret < 0) { |
| 3238 | return ret; |
| 3239 | } else if (ret != sizeof(uuid)) { |
| 3240 | return AVERROR_INVALIDDATA; |
| 3241 | } |
| 3242 | if (!memcmp(uuid, uuid_isml_manifest, sizeof(uuid))) { |
| 3243 | uint8_t *buffer, *ptr; |
| 3244 | char *endptr; |
| 3245 | size_t len = atom.size - sizeof(uuid); |
| 3246 | |
| 3247 | if (len < 4) { |
| 3248 | return AVERROR_INVALIDDATA; |
| 3249 | } |
| 3250 | ret = avio_skip(pb, 4); // zeroes |
| 3251 | len -= 4; |
| 3252 | |
| 3253 | buffer = av_mallocz(len + 1); |
| 3254 | if (!buffer) { |
| 3255 | return AVERROR(ENOMEM); |
| 3256 | } |
| 3257 | ret = avio_read(pb, buffer, len); |
| 3258 | if (ret < 0) { |
| 3259 | av_free(buffer); |
| 3260 | return ret; |
| 3261 | } else if (ret != len) { |
| 3262 | av_free(buffer); |
| 3263 | return AVERROR_INVALIDDATA; |
| 3264 | } |
| 3265 | |
| 3266 | ptr = buffer; |
| 3267 | while ((ptr = av_stristr(ptr, "systemBitrate=\""))) { |
| 3268 | ptr += sizeof("systemBitrate=\"") - 1; |
| 3269 | c->bitrates_count++; |
| 3270 | c->bitrates = av_realloc_f(c->bitrates, c->bitrates_count, sizeof(*c->bitrates)); |
| 3271 | if (!c->bitrates) { |
| 3272 | c->bitrates_count = 0; |
| 3273 | av_free(buffer); |
| 3274 | return AVERROR(ENOMEM); |
| 3275 | } |
| 3276 | errno = 0; |
| 3277 | ret = strtol(ptr, &endptr, 10); |
| 3278 | if (ret < 0 || errno || *endptr != '"') { |
| 3279 | c->bitrates[c->bitrates_count - 1] = 0; |
| 3280 | } else { |
| 3281 | c->bitrates[c->bitrates_count - 1] = ret; |
| 3282 | } |
| 3283 | } |
| 3284 | |
| 3285 | av_free(buffer); |
| 3286 | } |
| 3287 | return 0; |
| 3288 | } |
| 3289 | |
| 3290 | static int mov_read_free(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 3291 | { |
| 3292 | int ret; |
| 3293 | uint8_t content[16]; |
| 3294 | |
| 3295 | if (atom.size < 8) |
| 3296 | return 0; |
| 3297 | |
| 3298 | ret = avio_read(pb, content, FFMIN(sizeof(content), atom.size)); |
| 3299 | if (ret < 0) |
| 3300 | return ret; |
| 3301 | |
| 3302 | if ( !c->found_moov |
| 3303 | && !c->found_mdat |
| 3304 | && !memcmp(content, "Anevia\x1A\x1A", 8) |
| 3305 | && c->use_mfra_for == FF_MOV_FLAG_MFRA_AUTO) { |
| 3306 | c->use_mfra_for = FF_MOV_FLAG_MFRA_PTS; |
| 3307 | } |
| 3308 | |
| 3309 | return 0; |
| 3310 | } |
| 3311 | |
| 3312 | static const MOVParseTableEntry mov_default_parse_table[] = { |
| 3313 | { MKTAG('A','C','L','R'), mov_read_avid }, |
| 3314 | { MKTAG('A','P','R','G'), mov_read_avid }, |
| 3315 | { MKTAG('A','A','L','P'), mov_read_avid }, |
| 3316 | { MKTAG('A','R','E','S'), mov_read_ares }, |
| 3317 | { MKTAG('a','v','s','s'), mov_read_avss }, |
| 3318 | { MKTAG('c','h','p','l'), mov_read_chpl }, |
| 3319 | { MKTAG('c','o','6','4'), mov_read_stco }, |
| 3320 | { MKTAG('c','o','l','r'), mov_read_colr }, |
| 3321 | { MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */ |
| 3322 | { MKTAG('d','i','n','f'), mov_read_default }, |
| 3323 | { MKTAG('d','r','e','f'), mov_read_dref }, |
| 3324 | { MKTAG('e','d','t','s'), mov_read_default }, |
| 3325 | { MKTAG('e','l','s','t'), mov_read_elst }, |
| 3326 | { MKTAG('e','n','d','a'), mov_read_enda }, |
| 3327 | { MKTAG('f','i','e','l'), mov_read_fiel }, |
| 3328 | { MKTAG('f','t','y','p'), mov_read_ftyp }, |
| 3329 | { MKTAG('g','l','b','l'), mov_read_glbl }, |
| 3330 | { MKTAG('h','d','l','r'), mov_read_hdlr }, |
| 3331 | { MKTAG('i','l','s','t'), mov_read_ilst }, |
| 3332 | { MKTAG('j','p','2','h'), mov_read_jp2h }, |
| 3333 | { MKTAG('m','d','a','t'), mov_read_mdat }, |
| 3334 | { MKTAG('m','d','h','d'), mov_read_mdhd }, |
| 3335 | { MKTAG('m','d','i','a'), mov_read_default }, |
| 3336 | { MKTAG('m','e','t','a'), mov_read_meta }, |
| 3337 | { MKTAG('m','i','n','f'), mov_read_default }, |
| 3338 | { MKTAG('m','o','o','f'), mov_read_moof }, |
| 3339 | { MKTAG('m','o','o','v'), mov_read_moov }, |
| 3340 | { MKTAG('m','v','e','x'), mov_read_default }, |
| 3341 | { MKTAG('m','v','h','d'), mov_read_mvhd }, |
| 3342 | { MKTAG('S','M','I',' '), mov_read_svq3 }, |
| 3343 | { MKTAG('a','l','a','c'), mov_read_alac }, /* alac specific atom */ |
| 3344 | { MKTAG('a','v','c','C'), mov_read_glbl }, |
| 3345 | { MKTAG('p','a','s','p'), mov_read_pasp }, |
| 3346 | { MKTAG('s','t','b','l'), mov_read_default }, |
| 3347 | { MKTAG('s','t','c','o'), mov_read_stco }, |
| 3348 | { MKTAG('s','t','p','s'), mov_read_stps }, |
| 3349 | { MKTAG('s','t','r','f'), mov_read_strf }, |
| 3350 | { MKTAG('s','t','s','c'), mov_read_stsc }, |
| 3351 | { MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */ |
| 3352 | { MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */ |
| 3353 | { MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */ |
| 3354 | { MKTAG('s','t','t','s'), mov_read_stts }, |
| 3355 | { MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */ |
| 3356 | { MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */ |
| 3357 | { MKTAG('t','f','d','t'), mov_read_tfdt }, |
| 3358 | { MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */ |
| 3359 | { MKTAG('t','r','a','k'), mov_read_trak }, |
| 3360 | { MKTAG('t','r','a','f'), mov_read_default }, |
| 3361 | { MKTAG('t','r','e','f'), mov_read_default }, |
| 3362 | { MKTAG('t','m','c','d'), mov_read_tmcd }, |
| 3363 | { MKTAG('c','h','a','p'), mov_read_chap }, |
| 3364 | { MKTAG('t','r','e','x'), mov_read_trex }, |
| 3365 | { MKTAG('t','r','u','n'), mov_read_trun }, |
| 3366 | { MKTAG('u','d','t','a'), mov_read_default }, |
| 3367 | { MKTAG('w','a','v','e'), mov_read_wave }, |
| 3368 | { MKTAG('e','s','d','s'), mov_read_esds }, |
| 3369 | { MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */ |
| 3370 | { MKTAG('d','e','c','3'), mov_read_dec3 }, /* EAC-3 info */ |
| 3371 | { MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */ |
| 3372 | { MKTAG('w','f','e','x'), mov_read_wfex }, |
| 3373 | { MKTAG('c','m','o','v'), mov_read_cmov }, |
| 3374 | { MKTAG('c','h','a','n'), mov_read_chan }, /* channel layout */ |
| 3375 | { MKTAG('d','v','c','1'), mov_read_dvc1 }, |
| 3376 | { MKTAG('s','b','g','p'), mov_read_sbgp }, |
| 3377 | { MKTAG('h','v','c','C'), mov_read_glbl }, |
| 3378 | { MKTAG('u','u','i','d'), mov_read_uuid }, |
| 3379 | { MKTAG('C','i','n', 0x8e), mov_read_targa_y216 }, |
| 3380 | { MKTAG('f','r','e','e'), mov_read_free }, |
| 3381 | { MKTAG('-','-','-','-'), mov_read_custom }, |
| 3382 | { 0, NULL } |
| 3383 | }; |
| 3384 | |
| 3385 | static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom) |
| 3386 | { |
| 3387 | int64_t total_size = 0; |
| 3388 | MOVAtom a; |
| 3389 | int i; |
| 3390 | |
| 3391 | if (atom.size < 0) |
| 3392 | atom.size = INT64_MAX; |
| 3393 | while (total_size + 8 <= atom.size && !avio_feof(pb)) { |
| 3394 | int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL; |
| 3395 | a.size = atom.size; |
| 3396 | a.type=0; |
| 3397 | if (atom.size >= 8) { |
| 3398 | a.size = avio_rb32(pb); |
| 3399 | a.type = avio_rl32(pb); |
| 3400 | if (a.type == MKTAG('f','r','e','e') && |
| 3401 | a.size >= 8 && |
| 3402 | c->moov_retry) { |
| 3403 | uint8_t buf[8]; |
| 3404 | uint32_t *type = (uint32_t *)buf + 1; |
| 3405 | avio_read(pb, buf, 8); |
| 3406 | avio_seek(pb, -8, SEEK_CUR); |
| 3407 | if (*type == MKTAG('m','v','h','d') || |
| 3408 | *type == MKTAG('c','m','o','v')) { |
| 3409 | av_log(c->fc, AV_LOG_ERROR, "Detected moov in a free atom.\n"); |
| 3410 | a.type = MKTAG('m','o','o','v'); |
| 3411 | } |
| 3412 | } |
| 3413 | if (atom.type != MKTAG('r','o','o','t') && |
| 3414 | atom.type != MKTAG('m','o','o','v')) |
| 3415 | { |
| 3416 | if (a.type == MKTAG('t','r','a','k') || a.type == MKTAG('m','d','a','t')) |
| 3417 | { |
| 3418 | av_log(c->fc, AV_LOG_ERROR, "Broken file, trak/mdat not at top-level\n"); |
| 3419 | avio_skip(pb, -8); |
| 3420 | return 0; |
| 3421 | } |
| 3422 | } |
| 3423 | total_size += 8; |
| 3424 | if (a.size == 1) { /* 64 bit extended size */ |
| 3425 | a.size = avio_rb64(pb) - 8; |
| 3426 | total_size += 8; |
| 3427 | } |
| 3428 | } |
| 3429 | av_dlog(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n", |
| 3430 | a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size); |
| 3431 | if (a.size == 0) { |
| 3432 | a.size = atom.size - total_size + 8; |
| 3433 | } |
| 3434 | a.size -= 8; |
| 3435 | if (a.size < 0) |
| 3436 | break; |
| 3437 | a.size = FFMIN(a.size, atom.size - total_size); |
| 3438 | |
| 3439 | for (i = 0; mov_default_parse_table[i].type; i++) |
| 3440 | if (mov_default_parse_table[i].type == a.type) { |
| 3441 | parse = mov_default_parse_table[i].parse; |
| 3442 | break; |
| 3443 | } |
| 3444 | |
| 3445 | // container is user data |
| 3446 | if (!parse && (atom.type == MKTAG('u','d','t','a') || |
| 3447 | atom.type == MKTAG('i','l','s','t'))) |
| 3448 | parse = mov_read_udta_string; |
| 3449 | |
| 3450 | if (!parse) { /* skip leaf atoms data */ |
| 3451 | avio_skip(pb, a.size); |
| 3452 | } else { |
| 3453 | int64_t start_pos = avio_tell(pb); |
| 3454 | int64_t left; |
| 3455 | int err = parse(c, pb, a); |
| 3456 | if (err < 0) |
| 3457 | return err; |
| 3458 | if (c->found_moov && c->found_mdat && |
| 3459 | ((!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX) || |
| 3460 | start_pos + a.size == avio_size(pb))) { |
| 3461 | if (!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX) |
| 3462 | c->next_root_atom = start_pos + a.size; |
| 3463 | return 0; |
| 3464 | } |
| 3465 | left = a.size - avio_tell(pb) + start_pos; |
| 3466 | if (left > 0) /* skip garbage at atom end */ |
| 3467 | avio_skip(pb, left); |
| 3468 | else if (left < 0) { |
| 3469 | av_log(c->fc, AV_LOG_WARNING, |
| 3470 | "overread end of atom '%.4s' by %"PRId64" bytes\n", |
| 3471 | (char*)&a.type, -left); |
| 3472 | avio_seek(pb, left, SEEK_CUR); |
| 3473 | } |
| 3474 | } |
| 3475 | |
| 3476 | total_size += a.size; |
| 3477 | } |
| 3478 | |
| 3479 | if (total_size < atom.size && atom.size < 0x7ffff) |
| 3480 | avio_skip(pb, atom.size - total_size); |
| 3481 | |
| 3482 | return 0; |
| 3483 | } |
| 3484 | |
| 3485 | static int mov_probe(AVProbeData *p) |
| 3486 | { |
| 3487 | int64_t offset; |
| 3488 | uint32_t tag; |
| 3489 | int score = 0; |
| 3490 | int moov_offset = -1; |
| 3491 | |
| 3492 | /* check file header */ |
| 3493 | offset = 0; |
| 3494 | for (;;) { |
| 3495 | /* ignore invalid offset */ |
| 3496 | if ((offset + 8) > (unsigned int)p->buf_size) |
| 3497 | break; |
| 3498 | tag = AV_RL32(p->buf + offset + 4); |
| 3499 | switch(tag) { |
| 3500 | /* check for obvious tags */ |
| 3501 | case MKTAG('m','o','o','v'): |
| 3502 | moov_offset = offset + 4; |
| 3503 | case MKTAG('m','d','a','t'): |
| 3504 | case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */ |
| 3505 | case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */ |
| 3506 | case MKTAG('f','t','y','p'): |
| 3507 | if (AV_RB32(p->buf+offset) < 8 && |
| 3508 | (AV_RB32(p->buf+offset) != 1 || |
| 3509 | offset + 12 > (unsigned int)p->buf_size || |
| 3510 | AV_RB64(p->buf+offset + 8) == 0)) { |
| 3511 | score = FFMAX(score, AVPROBE_SCORE_EXTENSION); |
| 3512 | } else if (tag == MKTAG('f','t','y','p') && |
| 3513 | AV_RL32(p->buf + offset + 8) == MKTAG('j','p','2',' ')) { |
| 3514 | score = FFMAX(score, 5); |
| 3515 | } else { |
| 3516 | score = AVPROBE_SCORE_MAX; |
| 3517 | } |
| 3518 | offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset; |
| 3519 | break; |
| 3520 | /* those are more common words, so rate then a bit less */ |
| 3521 | case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */ |
| 3522 | case MKTAG('w','i','d','e'): |
| 3523 | case MKTAG('f','r','e','e'): |
| 3524 | case MKTAG('j','u','n','k'): |
| 3525 | case MKTAG('p','i','c','t'): |
| 3526 | score = FFMAX(score, AVPROBE_SCORE_MAX - 5); |
| 3527 | offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset; |
| 3528 | break; |
| 3529 | case MKTAG(0x82,0x82,0x7f,0x7d): |
| 3530 | case MKTAG('s','k','i','p'): |
| 3531 | case MKTAG('u','u','i','d'): |
| 3532 | case MKTAG('p','r','f','l'): |
| 3533 | /* if we only find those cause probedata is too small at least rate them */ |
| 3534 | score = FFMAX(score, AVPROBE_SCORE_EXTENSION); |
| 3535 | offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset; |
| 3536 | break; |
| 3537 | default: |
| 3538 | offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset; |
| 3539 | } |
| 3540 | } |
| 3541 | if(score > AVPROBE_SCORE_MAX - 50 && moov_offset != -1) { |
| 3542 | /* moov atom in the header - we should make sure that this is not a |
| 3543 | * MOV-packed MPEG-PS */ |
| 3544 | offset = moov_offset; |
| 3545 | |
| 3546 | while(offset < (p->buf_size - 16)){ /* Sufficient space */ |
| 3547 | /* We found an actual hdlr atom */ |
| 3548 | if(AV_RL32(p->buf + offset ) == MKTAG('h','d','l','r') && |
| 3549 | AV_RL32(p->buf + offset + 8) == MKTAG('m','h','l','r') && |
| 3550 | AV_RL32(p->buf + offset + 12) == MKTAG('M','P','E','G')){ |
| 3551 | av_log(NULL, AV_LOG_WARNING, "Found media data tag MPEG indicating this is a MOV-packed MPEG-PS.\n"); |
| 3552 | /* We found a media handler reference atom describing an |
| 3553 | * MPEG-PS-in-MOV, return a |
| 3554 | * low score to force expanding the probe window until |
| 3555 | * mpegps_probe finds what it needs */ |
| 3556 | return 5; |
| 3557 | }else |
| 3558 | /* Keep looking */ |
| 3559 | offset+=2; |
| 3560 | } |
| 3561 | } |
| 3562 | |
| 3563 | return score; |
| 3564 | } |
| 3565 | |
| 3566 | // must be done after parsing all trak because there's no order requirement |
| 3567 | static void mov_read_chapters(AVFormatContext *s) |
| 3568 | { |
| 3569 | MOVContext *mov = s->priv_data; |
| 3570 | AVStream *st = NULL; |
| 3571 | MOVStreamContext *sc; |
| 3572 | int64_t cur_pos; |
| 3573 | int i; |
| 3574 | |
| 3575 | for (i = 0; i < s->nb_streams; i++) |
| 3576 | if (s->streams[i]->id == mov->chapter_track) { |
| 3577 | st = s->streams[i]; |
| 3578 | break; |
| 3579 | } |
| 3580 | if (!st) { |
| 3581 | av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n"); |
| 3582 | return; |
| 3583 | } |
| 3584 | |
| 3585 | st->discard = AVDISCARD_ALL; |
| 3586 | sc = st->priv_data; |
| 3587 | cur_pos = avio_tell(sc->pb); |
| 3588 | |
| 3589 | for (i = 0; i < st->nb_index_entries; i++) { |
| 3590 | AVIndexEntry *sample = &st->index_entries[i]; |
| 3591 | int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration; |
| 3592 | uint8_t *title; |
| 3593 | uint16_t ch; |
| 3594 | int len, title_len; |
| 3595 | |
| 3596 | if (end < sample->timestamp) { |
| 3597 | av_log(s, AV_LOG_WARNING, "ignoring stream duration which is shorter than chapters\n"); |
| 3598 | end = AV_NOPTS_VALUE; |
| 3599 | } |
| 3600 | |
| 3601 | if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) { |
| 3602 | av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i); |
| 3603 | goto finish; |
| 3604 | } |
| 3605 | |
| 3606 | // the first two bytes are the length of the title |
| 3607 | len = avio_rb16(sc->pb); |
| 3608 | if (len > sample->size-2) |
| 3609 | continue; |
| 3610 | title_len = 2*len + 1; |
| 3611 | if (!(title = av_mallocz(title_len))) |
| 3612 | goto finish; |
| 3613 | |
| 3614 | // The samples could theoretically be in any encoding if there's an encd |
| 3615 | // atom following, but in practice are only utf-8 or utf-16, distinguished |
| 3616 | // instead by the presence of a BOM |
| 3617 | if (!len) { |
| 3618 | title[0] = 0; |
| 3619 | } else { |
| 3620 | ch = avio_rb16(sc->pb); |
| 3621 | if (ch == 0xfeff) |
| 3622 | avio_get_str16be(sc->pb, len, title, title_len); |
| 3623 | else if (ch == 0xfffe) |
| 3624 | avio_get_str16le(sc->pb, len, title, title_len); |
| 3625 | else { |
| 3626 | AV_WB16(title, ch); |
| 3627 | if (len == 1 || len == 2) |
| 3628 | title[len] = 0; |
| 3629 | else |
| 3630 | avio_get_str(sc->pb, INT_MAX, title + 2, len - 1); |
| 3631 | } |
| 3632 | } |
| 3633 | |
| 3634 | avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title); |
| 3635 | av_freep(&title); |
| 3636 | } |
| 3637 | finish: |
| 3638 | avio_seek(sc->pb, cur_pos, SEEK_SET); |
| 3639 | } |
| 3640 | |
| 3641 | static int parse_timecode_in_framenum_format(AVFormatContext *s, AVStream *st, |
| 3642 | uint32_t value, int flags) |
| 3643 | { |
| 3644 | AVTimecode tc; |
| 3645 | char buf[AV_TIMECODE_STR_SIZE]; |
| 3646 | AVRational rate = {st->codec->time_base.den, |
| 3647 | st->codec->time_base.num}; |
| 3648 | int ret = av_timecode_init(&tc, rate, flags, 0, s); |
| 3649 | if (ret < 0) |
| 3650 | return ret; |
| 3651 | av_dict_set(&st->metadata, "timecode", |
| 3652 | av_timecode_make_string(&tc, buf, value), 0); |
| 3653 | return 0; |
| 3654 | } |
| 3655 | |
| 3656 | static int mov_read_timecode_track(AVFormatContext *s, AVStream *st) |
| 3657 | { |
| 3658 | MOVStreamContext *sc = st->priv_data; |
| 3659 | int flags = 0; |
| 3660 | int64_t cur_pos = avio_tell(sc->pb); |
| 3661 | uint32_t value; |
| 3662 | |
| 3663 | if (!st->nb_index_entries) |
| 3664 | return -1; |
| 3665 | |
| 3666 | avio_seek(sc->pb, st->index_entries->pos, SEEK_SET); |
| 3667 | value = avio_rb32(s->pb); |
| 3668 | |
| 3669 | if (sc->tmcd_flags & 0x0001) flags |= AV_TIMECODE_FLAG_DROPFRAME; |
| 3670 | if (sc->tmcd_flags & 0x0002) flags |= AV_TIMECODE_FLAG_24HOURSMAX; |
| 3671 | if (sc->tmcd_flags & 0x0004) flags |= AV_TIMECODE_FLAG_ALLOWNEGATIVE; |
| 3672 | |
| 3673 | /* Assume Counter flag is set to 1 in tmcd track (even though it is likely |
| 3674 | * not the case) and thus assume "frame number format" instead of QT one. |
| 3675 | * No sample with tmcd track can be found with a QT timecode at the moment, |
| 3676 | * despite what the tmcd track "suggests" (Counter flag set to 0 means QT |
| 3677 | * format). */ |
| 3678 | parse_timecode_in_framenum_format(s, st, value, flags); |
| 3679 | |
| 3680 | avio_seek(sc->pb, cur_pos, SEEK_SET); |
| 3681 | return 0; |
| 3682 | } |
| 3683 | |
| 3684 | static int mov_read_close(AVFormatContext *s) |
| 3685 | { |
| 3686 | MOVContext *mov = s->priv_data; |
| 3687 | int i, j; |
| 3688 | |
| 3689 | for (i = 0; i < s->nb_streams; i++) { |
| 3690 | AVStream *st = s->streams[i]; |
| 3691 | MOVStreamContext *sc = st->priv_data; |
| 3692 | |
| 3693 | av_freep(&sc->ctts_data); |
| 3694 | for (j = 0; j < sc->drefs_count; j++) { |
| 3695 | av_freep(&sc->drefs[j].path); |
| 3696 | av_freep(&sc->drefs[j].dir); |
| 3697 | } |
| 3698 | av_freep(&sc->drefs); |
| 3699 | |
| 3700 | sc->drefs_count = 0; |
| 3701 | |
| 3702 | if (!sc->pb_is_copied) |
| 3703 | avio_close(sc->pb); |
| 3704 | |
| 3705 | sc->pb = NULL; |
| 3706 | av_freep(&sc->chunk_offsets); |
| 3707 | av_freep(&sc->stsc_data); |
| 3708 | av_freep(&sc->sample_sizes); |
| 3709 | av_freep(&sc->keyframes); |
| 3710 | av_freep(&sc->stts_data); |
| 3711 | av_freep(&sc->stps_data); |
| 3712 | av_freep(&sc->rap_group); |
| 3713 | av_freep(&sc->display_matrix); |
| 3714 | } |
| 3715 | |
| 3716 | if (mov->dv_demux) { |
| 3717 | avformat_free_context(mov->dv_fctx); |
| 3718 | mov->dv_fctx = NULL; |
| 3719 | } |
| 3720 | |
| 3721 | av_freep(&mov->trex_data); |
| 3722 | av_freep(&mov->bitrates); |
| 3723 | |
| 3724 | for (i = 0; i < mov->fragment_index_count; i++) { |
| 3725 | MOVFragmentIndex* index = mov->fragment_index_data[i]; |
| 3726 | av_freep(&index->items); |
| 3727 | av_freep(&mov->fragment_index_data[i]); |
| 3728 | } |
| 3729 | av_freep(&mov->fragment_index_data); |
| 3730 | |
| 3731 | return 0; |
| 3732 | } |
| 3733 | |
| 3734 | static int tmcd_is_referenced(AVFormatContext *s, int tmcd_id) |
| 3735 | { |
| 3736 | int i; |
| 3737 | |
| 3738 | for (i = 0; i < s->nb_streams; i++) { |
| 3739 | AVStream *st = s->streams[i]; |
| 3740 | MOVStreamContext *sc = st->priv_data; |
| 3741 | |
| 3742 | if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && |
| 3743 | sc->timecode_track == tmcd_id) |
| 3744 | return 1; |
| 3745 | } |
| 3746 | return 0; |
| 3747 | } |
| 3748 | |
| 3749 | /* look for a tmcd track not referenced by any video track, and export it globally */ |
| 3750 | static void export_orphan_timecode(AVFormatContext *s) |
| 3751 | { |
| 3752 | int i; |
| 3753 | |
| 3754 | for (i = 0; i < s->nb_streams; i++) { |
| 3755 | AVStream *st = s->streams[i]; |
| 3756 | |
| 3757 | if (st->codec->codec_tag == MKTAG('t','m','c','d') && |
| 3758 | !tmcd_is_referenced(s, i + 1)) { |
| 3759 | AVDictionaryEntry *tcr = av_dict_get(st->metadata, "timecode", NULL, 0); |
| 3760 | if (tcr) { |
| 3761 | av_dict_set(&s->metadata, "timecode", tcr->value, 0); |
| 3762 | break; |
| 3763 | } |
| 3764 | } |
| 3765 | } |
| 3766 | } |
| 3767 | |
| 3768 | static int read_tfra(MOVContext *mov, AVIOContext *f) |
| 3769 | { |
| 3770 | MOVFragmentIndex* index = NULL; |
| 3771 | int version, fieldlength, i, j, err; |
| 3772 | int64_t pos = avio_tell(f); |
| 3773 | uint32_t size = avio_rb32(f); |
| 3774 | if (avio_rb32(f) != MKBETAG('t', 'f', 'r', 'a')) { |
| 3775 | return -1; |
| 3776 | } |
| 3777 | av_log(mov->fc, AV_LOG_VERBOSE, "found tfra\n"); |
| 3778 | index = av_mallocz(sizeof(MOVFragmentIndex)); |
| 3779 | if (!index) { |
| 3780 | return AVERROR(ENOMEM); |
| 3781 | } |
| 3782 | mov->fragment_index_count++; |
| 3783 | if ((err = av_reallocp(&mov->fragment_index_data, |
| 3784 | mov->fragment_index_count * |
| 3785 | sizeof(MOVFragmentIndex*))) < 0) { |
| 3786 | av_freep(&index); |
| 3787 | return err; |
| 3788 | } |
| 3789 | mov->fragment_index_data[mov->fragment_index_count - 1] = |
| 3790 | index; |
| 3791 | |
| 3792 | version = avio_r8(f); |
| 3793 | avio_rb24(f); |
| 3794 | index->track_id = avio_rb32(f); |
| 3795 | fieldlength = avio_rb32(f); |
| 3796 | index->item_count = avio_rb32(f); |
| 3797 | index->items = av_mallocz( |
| 3798 | index->item_count * sizeof(MOVFragmentIndexItem)); |
| 3799 | if (!index->items) { |
| 3800 | return AVERROR(ENOMEM); |
| 3801 | } |
| 3802 | for (i = 0; i < index->item_count; i++) { |
| 3803 | int64_t time, offset; |
| 3804 | if (version == 1) { |
| 3805 | time = avio_rb64(f); |
| 3806 | offset = avio_rb64(f); |
| 3807 | } else { |
| 3808 | time = avio_rb32(f); |
| 3809 | offset = avio_rb32(f); |
| 3810 | } |
| 3811 | index->items[i].time = time; |
| 3812 | index->items[i].moof_offset = offset; |
| 3813 | for (j = 0; j < ((fieldlength >> 4) & 3) + 1; j++) |
| 3814 | avio_r8(f); |
| 3815 | for (j = 0; j < ((fieldlength >> 2) & 3) + 1; j++) |
| 3816 | avio_r8(f); |
| 3817 | for (j = 0; j < ((fieldlength >> 0) & 3) + 1; j++) |
| 3818 | avio_r8(f); |
| 3819 | } |
| 3820 | |
| 3821 | avio_seek(f, pos + size, SEEK_SET); |
| 3822 | return 0; |
| 3823 | } |
| 3824 | |
| 3825 | static int mov_read_mfra(MOVContext *c, AVIOContext *f) |
| 3826 | { |
| 3827 | int64_t stream_size = avio_size(f); |
| 3828 | int64_t original_pos = avio_tell(f); |
| 3829 | int64_t seek_ret; |
| 3830 | int32_t mfra_size; |
| 3831 | int ret = -1; |
| 3832 | if ((seek_ret = avio_seek(f, stream_size - 4, SEEK_SET)) < 0) { |
| 3833 | ret = seek_ret; |
| 3834 | goto fail; |
| 3835 | } |
| 3836 | mfra_size = avio_rb32(f); |
| 3837 | if (mfra_size < 0 || mfra_size > stream_size) { |
| 3838 | av_log(c->fc, AV_LOG_DEBUG, "doesn't look like mfra (unreasonable size)\n"); |
| 3839 | goto fail; |
| 3840 | } |
| 3841 | if ((seek_ret = avio_seek(f, -mfra_size, SEEK_CUR)) < 0) { |
| 3842 | ret = seek_ret; |
| 3843 | goto fail; |
| 3844 | } |
| 3845 | if (avio_rb32(f) != mfra_size) { |
| 3846 | av_log(c->fc, AV_LOG_DEBUG, "doesn't look like mfra (size mismatch)\n"); |
| 3847 | goto fail; |
| 3848 | } |
| 3849 | if (avio_rb32(f) != MKBETAG('m', 'f', 'r', 'a')) { |
| 3850 | av_log(c->fc, AV_LOG_DEBUG, "doesn't look like mfra (tag mismatch)\n"); |
| 3851 | goto fail; |
| 3852 | } |
| 3853 | ret = 0; |
| 3854 | av_log(c->fc, AV_LOG_VERBOSE, "stream has mfra\n"); |
| 3855 | while (!read_tfra(c, f)) { |
| 3856 | /* Empty */ |
| 3857 | } |
| 3858 | fail: |
| 3859 | seek_ret = avio_seek(f, original_pos, SEEK_SET); |
| 3860 | if (seek_ret < 0) { |
| 3861 | av_log(c->fc, AV_LOG_ERROR, |
| 3862 | "failed to seek back after looking for mfra\n"); |
| 3863 | ret = seek_ret; |
| 3864 | } |
| 3865 | return ret; |
| 3866 | } |
| 3867 | |
| 3868 | static int mov_read_header(AVFormatContext *s) |
| 3869 | { |
| 3870 | MOVContext *mov = s->priv_data; |
| 3871 | AVIOContext *pb = s->pb; |
| 3872 | int j, err; |
| 3873 | MOVAtom atom = { AV_RL32("root") }; |
| 3874 | int i; |
| 3875 | |
| 3876 | mov->fc = s; |
| 3877 | /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */ |
| 3878 | if (pb->seekable) |
| 3879 | atom.size = avio_size(pb); |
| 3880 | else |
| 3881 | atom.size = INT64_MAX; |
| 3882 | |
| 3883 | /* check MOV header */ |
| 3884 | do { |
| 3885 | if (mov->moov_retry) |
| 3886 | avio_seek(pb, 0, SEEK_SET); |
| 3887 | if ((err = mov_read_default(mov, pb, atom)) < 0) { |
| 3888 | av_log(s, AV_LOG_ERROR, "error reading header\n"); |
| 3889 | mov_read_close(s); |
| 3890 | return err; |
| 3891 | } |
| 3892 | } while (pb->seekable && !mov->found_moov && !mov->moov_retry++); |
| 3893 | if (!mov->found_moov) { |
| 3894 | av_log(s, AV_LOG_ERROR, "moov atom not found\n"); |
| 3895 | mov_read_close(s); |
| 3896 | return AVERROR_INVALIDDATA; |
| 3897 | } |
| 3898 | av_dlog(mov->fc, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb)); |
| 3899 | |
| 3900 | if (pb->seekable) { |
| 3901 | if (mov->chapter_track > 0) |
| 3902 | mov_read_chapters(s); |
| 3903 | for (i = 0; i < s->nb_streams; i++) |
| 3904 | if (s->streams[i]->codec->codec_tag == AV_RL32("tmcd")) |
| 3905 | mov_read_timecode_track(s, s->streams[i]); |
| 3906 | } |
| 3907 | |
| 3908 | /* copy timecode metadata from tmcd tracks to the related video streams */ |
| 3909 | for (i = 0; i < s->nb_streams; i++) { |
| 3910 | AVStream *st = s->streams[i]; |
| 3911 | MOVStreamContext *sc = st->priv_data; |
| 3912 | if (sc->timecode_track > 0) { |
| 3913 | AVDictionaryEntry *tcr; |
| 3914 | int tmcd_st_id = -1; |
| 3915 | |
| 3916 | for (j = 0; j < s->nb_streams; j++) |
| 3917 | if (s->streams[j]->id == sc->timecode_track) |
| 3918 | tmcd_st_id = j; |
| 3919 | |
| 3920 | if (tmcd_st_id < 0 || tmcd_st_id == i) |
| 3921 | continue; |
| 3922 | tcr = av_dict_get(s->streams[tmcd_st_id]->metadata, "timecode", NULL, 0); |
| 3923 | if (tcr) |
| 3924 | av_dict_set(&st->metadata, "timecode", tcr->value, 0); |
| 3925 | } |
| 3926 | } |
| 3927 | export_orphan_timecode(s); |
| 3928 | |
| 3929 | for (i = 0; i < s->nb_streams; i++) { |
| 3930 | AVStream *st = s->streams[i]; |
| 3931 | MOVStreamContext *sc = st->priv_data; |
| 3932 | fix_timescale(mov, sc); |
| 3933 | if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO && st->codec->codec_id == AV_CODEC_ID_AAC) { |
| 3934 | st->skip_samples = sc->start_pad; |
| 3935 | } |
| 3936 | if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && sc->nb_frames_for_fps > 0 && sc->duration_for_fps > 0) |
| 3937 | av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den, |
| 3938 | sc->time_scale*(int64_t)sc->nb_frames_for_fps, sc->duration_for_fps, INT_MAX); |
| 3939 | if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) { |
| 3940 | if (st->codec->width <= 0 || st->codec->height <= 0) { |
| 3941 | st->codec->width = sc->width; |
| 3942 | st->codec->height = sc->height; |
| 3943 | } |
| 3944 | if (st->codec->codec_id == AV_CODEC_ID_DVD_SUBTITLE) { |
| 3945 | if ((err = mov_rewrite_dvd_sub_extradata(st)) < 0) |
| 3946 | return err; |
| 3947 | } |
| 3948 | } |
| 3949 | } |
| 3950 | |
| 3951 | if (mov->trex_data) { |
| 3952 | for (i = 0; i < s->nb_streams; i++) { |
| 3953 | AVStream *st = s->streams[i]; |
| 3954 | MOVStreamContext *sc = st->priv_data; |
| 3955 | if (st->duration > 0) |
| 3956 | st->codec->bit_rate = sc->data_size * 8 * sc->time_scale / st->duration; |
| 3957 | } |
| 3958 | } |
| 3959 | |
| 3960 | if (mov->use_mfra_for > 0) { |
| 3961 | for (i = 0; i < s->nb_streams; i++) { |
| 3962 | AVStream *st = s->streams[i]; |
| 3963 | MOVStreamContext *sc = st->priv_data; |
| 3964 | if (sc->duration_for_fps > 0) { |
| 3965 | st->codec->bit_rate = sc->data_size * 8 * sc->time_scale / |
| 3966 | sc->duration_for_fps; |
| 3967 | } |
| 3968 | } |
| 3969 | } |
| 3970 | |
| 3971 | for (i = 0; i < mov->bitrates_count && i < s->nb_streams; i++) { |
| 3972 | if (mov->bitrates[i]) { |
| 3973 | s->streams[i]->codec->bit_rate = mov->bitrates[i]; |
| 3974 | } |
| 3975 | } |
| 3976 | |
| 3977 | ff_rfps_calculate(s); |
| 3978 | |
| 3979 | for (i = 0; i < s->nb_streams; i++) { |
| 3980 | AVStream *st = s->streams[i]; |
| 3981 | MOVStreamContext *sc = st->priv_data; |
| 3982 | |
| 3983 | switch (st->codec->codec_type) { |
| 3984 | case AVMEDIA_TYPE_AUDIO: |
| 3985 | err = ff_replaygain_export(st, s->metadata); |
| 3986 | if (err < 0) { |
| 3987 | mov_read_close(s); |
| 3988 | return err; |
| 3989 | } |
| 3990 | break; |
| 3991 | case AVMEDIA_TYPE_VIDEO: |
| 3992 | if (sc->display_matrix) { |
| 3993 | AVPacketSideData *sd, *tmp; |
| 3994 | |
| 3995 | tmp = av_realloc_array(st->side_data, |
| 3996 | st->nb_side_data + 1, sizeof(*tmp)); |
| 3997 | if (!tmp) |
| 3998 | return AVERROR(ENOMEM); |
| 3999 | |
| 4000 | st->side_data = tmp; |
| 4001 | st->nb_side_data++; |
| 4002 | |
| 4003 | sd = &st->side_data[st->nb_side_data - 1]; |
| 4004 | sd->type = AV_PKT_DATA_DISPLAYMATRIX; |
| 4005 | sd->size = sizeof(int32_t) * 9; |
| 4006 | sd->data = (uint8_t*)sc->display_matrix; |
| 4007 | sc->display_matrix = NULL; |
| 4008 | } |
| 4009 | break; |
| 4010 | } |
| 4011 | } |
| 4012 | |
| 4013 | return 0; |
| 4014 | } |
| 4015 | |
| 4016 | static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st) |
| 4017 | { |
| 4018 | AVIndexEntry *sample = NULL; |
| 4019 | int64_t best_dts = INT64_MAX; |
| 4020 | int i; |
| 4021 | for (i = 0; i < s->nb_streams; i++) { |
| 4022 | AVStream *avst = s->streams[i]; |
| 4023 | MOVStreamContext *msc = avst->priv_data; |
| 4024 | if (msc->pb && msc->current_sample < avst->nb_index_entries) { |
| 4025 | AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample]; |
| 4026 | int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale); |
| 4027 | av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts); |
| 4028 | if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) || |
| 4029 | (s->pb->seekable && |
| 4030 | ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb && |
| 4031 | ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) || |
| 4032 | (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) { |
| 4033 | sample = current_sample; |
| 4034 | best_dts = dts; |
| 4035 | *st = avst; |
| 4036 | } |
| 4037 | } |
| 4038 | } |
| 4039 | return sample; |
| 4040 | } |
| 4041 | |
| 4042 | static int mov_read_packet(AVFormatContext *s, AVPacket *pkt) |
| 4043 | { |
| 4044 | MOVContext *mov = s->priv_data; |
| 4045 | MOVStreamContext *sc; |
| 4046 | AVIndexEntry *sample; |
| 4047 | AVStream *st = NULL; |
| 4048 | int ret; |
| 4049 | mov->fc = s; |
| 4050 | retry: |
| 4051 | sample = mov_find_next_sample(s, &st); |
| 4052 | if (!sample) { |
| 4053 | mov->found_mdat = 0; |
| 4054 | if (!mov->next_root_atom) |
| 4055 | return AVERROR_EOF; |
| 4056 | avio_seek(s->pb, mov->next_root_atom, SEEK_SET); |
| 4057 | mov->next_root_atom = 0; |
| 4058 | if (mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 || |
| 4059 | avio_feof(s->pb)) |
| 4060 | return AVERROR_EOF; |
| 4061 | av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb)); |
| 4062 | goto retry; |
| 4063 | } |
| 4064 | sc = st->priv_data; |
| 4065 | /* must be done just before reading, to avoid infinite loop on sample */ |
| 4066 | sc->current_sample++; |
| 4067 | |
| 4068 | if (mov->next_root_atom) { |
| 4069 | sample->pos = FFMIN(sample->pos, mov->next_root_atom); |
| 4070 | sample->size = FFMIN(sample->size, (mov->next_root_atom - sample->pos)); |
| 4071 | } |
| 4072 | |
| 4073 | if (st->discard != AVDISCARD_ALL) { |
| 4074 | if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) { |
| 4075 | av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n", |
| 4076 | sc->ffindex, sample->pos); |
| 4077 | return AVERROR_INVALIDDATA; |
| 4078 | } |
| 4079 | ret = av_get_packet(sc->pb, pkt, sample->size); |
| 4080 | if (ret < 0) |
| 4081 | return ret; |
| 4082 | if (sc->has_palette) { |
| 4083 | uint8_t *pal; |
| 4084 | |
| 4085 | pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE); |
| 4086 | if (!pal) { |
| 4087 | av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n"); |
| 4088 | } else { |
| 4089 | memcpy(pal, sc->palette, AVPALETTE_SIZE); |
| 4090 | sc->has_palette = 0; |
| 4091 | } |
| 4092 | } |
| 4093 | #if CONFIG_DV_DEMUXER |
| 4094 | if (mov->dv_demux && sc->dv_audio_container) { |
| 4095 | avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size, pkt->pos); |
| 4096 | av_free(pkt->data); |
| 4097 | pkt->size = 0; |
| 4098 | ret = avpriv_dv_get_packet(mov->dv_demux, pkt); |
| 4099 | if (ret < 0) |
| 4100 | return ret; |
| 4101 | } |
| 4102 | #endif |
| 4103 | } |
| 4104 | |
| 4105 | pkt->stream_index = sc->ffindex; |
| 4106 | pkt->dts = sample->timestamp; |
| 4107 | if (sc->ctts_data && sc->ctts_index < sc->ctts_count) { |
| 4108 | pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration; |
| 4109 | /* update ctts context */ |
| 4110 | sc->ctts_sample++; |
| 4111 | if (sc->ctts_index < sc->ctts_count && |
| 4112 | sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) { |
| 4113 | sc->ctts_index++; |
| 4114 | sc->ctts_sample = 0; |
| 4115 | } |
| 4116 | if (sc->wrong_dts) |
| 4117 | pkt->dts = AV_NOPTS_VALUE; |
| 4118 | } else { |
| 4119 | int64_t next_dts = (sc->current_sample < st->nb_index_entries) ? |
| 4120 | st->index_entries[sc->current_sample].timestamp : st->duration; |
| 4121 | pkt->duration = next_dts - pkt->dts; |
| 4122 | pkt->pts = pkt->dts; |
| 4123 | } |
| 4124 | if (st->discard == AVDISCARD_ALL) |
| 4125 | goto retry; |
| 4126 | pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0; |
| 4127 | pkt->pos = sample->pos; |
| 4128 | av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n", |
| 4129 | pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration); |
| 4130 | return 0; |
| 4131 | } |
| 4132 | |
| 4133 | static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags) |
| 4134 | { |
| 4135 | MOVStreamContext *sc = st->priv_data; |
| 4136 | int sample, time_sample; |
| 4137 | int i; |
| 4138 | |
| 4139 | sample = av_index_search_timestamp(st, timestamp, flags); |
| 4140 | av_dlog(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample); |
| 4141 | if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp) |
| 4142 | sample = 0; |
| 4143 | if (sample < 0) /* not sure what to do */ |
| 4144 | return AVERROR_INVALIDDATA; |
| 4145 | sc->current_sample = sample; |
| 4146 | av_dlog(s, "stream %d, found sample %d\n", st->index, sc->current_sample); |
| 4147 | /* adjust ctts index */ |
| 4148 | if (sc->ctts_data) { |
| 4149 | time_sample = 0; |
| 4150 | for (i = 0; i < sc->ctts_count; i++) { |
| 4151 | int next = time_sample + sc->ctts_data[i].count; |
| 4152 | if (next > sc->current_sample) { |
| 4153 | sc->ctts_index = i; |
| 4154 | sc->ctts_sample = sc->current_sample - time_sample; |
| 4155 | break; |
| 4156 | } |
| 4157 | time_sample = next; |
| 4158 | } |
| 4159 | } |
| 4160 | return sample; |
| 4161 | } |
| 4162 | |
| 4163 | static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags) |
| 4164 | { |
| 4165 | AVStream *st; |
| 4166 | int64_t seek_timestamp, timestamp; |
| 4167 | int sample; |
| 4168 | int i; |
| 4169 | |
| 4170 | if (stream_index >= s->nb_streams) |
| 4171 | return AVERROR_INVALIDDATA; |
| 4172 | |
| 4173 | st = s->streams[stream_index]; |
| 4174 | sample = mov_seek_stream(s, st, sample_time, flags); |
| 4175 | if (sample < 0) |
| 4176 | return sample; |
| 4177 | |
| 4178 | /* adjust seek timestamp to found sample timestamp */ |
| 4179 | seek_timestamp = st->index_entries[sample].timestamp; |
| 4180 | |
| 4181 | for (i = 0; i < s->nb_streams; i++) { |
| 4182 | MOVStreamContext *sc = s->streams[i]->priv_data; |
| 4183 | st = s->streams[i]; |
| 4184 | st->skip_samples = (sample_time <= 0) ? sc->start_pad : 0; |
| 4185 | |
| 4186 | if (stream_index == i) |
| 4187 | continue; |
| 4188 | |
| 4189 | timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base); |
| 4190 | mov_seek_stream(s, st, timestamp, flags); |
| 4191 | } |
| 4192 | return 0; |
| 4193 | } |
| 4194 | |
| 4195 | #define OFFSET(x) offsetof(MOVContext, x) |
| 4196 | #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM |
| 4197 | static const AVOption mov_options[] = { |
| 4198 | {"use_absolute_path", |
| 4199 | "allow using absolute path when opening alias, this is a possible security issue", |
| 4200 | offsetof(MOVContext, use_absolute_path), FF_OPT_TYPE_INT, {.i64 = 0}, |
| 4201 | 0, 1, AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_DECODING_PARAM}, |
| 4202 | {"ignore_editlist", "", offsetof(MOVContext, ignore_editlist), FF_OPT_TYPE_INT, {.i64 = 0}, |
| 4203 | 0, 1, AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_DECODING_PARAM}, |
| 4204 | {"use_mfra_for", |
| 4205 | "use mfra for fragment timestamps", |
| 4206 | offsetof(MOVContext, use_mfra_for), FF_OPT_TYPE_INT, {.i64 = FF_MOV_FLAG_MFRA_AUTO}, |
| 4207 | -1, FF_MOV_FLAG_MFRA_PTS, AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_DECODING_PARAM, |
| 4208 | "use_mfra_for"}, |
| 4209 | {"auto", "auto", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_MFRA_AUTO}, 0, 0, |
| 4210 | AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_DECODING_PARAM, "use_mfra_for" }, |
| 4211 | {"dts", "dts", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_MFRA_DTS}, 0, 0, |
| 4212 | AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_DECODING_PARAM, "use_mfra_for" }, |
| 4213 | {"pts", "pts", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_MFRA_PTS}, 0, 0, |
| 4214 | AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_DECODING_PARAM, "use_mfra_for" }, |
| 4215 | { "export_all", "Export unrecognized metadata entries", OFFSET(export_all), |
| 4216 | AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, .flags = FLAGS }, |
| 4217 | { NULL }, |
| 4218 | }; |
| 4219 | |
| 4220 | static const AVClass mov_class = { |
| 4221 | .class_name = "mov,mp4,m4a,3gp,3g2,mj2", |
| 4222 | .item_name = av_default_item_name, |
| 4223 | .option = mov_options, |
| 4224 | .version = LIBAVUTIL_VERSION_INT, |
| 4225 | }; |
| 4226 | |
| 4227 | AVInputFormat ff_mov_demuxer = { |
| 4228 | .name = "mov,mp4,m4a,3gp,3g2,mj2", |
| 4229 | .long_name = NULL_IF_CONFIG_SMALL("QuickTime / MOV"), |
| 4230 | .priv_class = &mov_class, |
| 4231 | .priv_data_size = sizeof(MOVContext), |
| 4232 | .extensions = "mov,mp4,m4a,3gp,3g2,mj2", |
| 4233 | .read_probe = mov_probe, |
| 4234 | .read_header = mov_read_header, |
| 4235 | .read_packet = mov_read_packet, |
| 4236 | .read_close = mov_read_close, |
| 4237 | .read_seek = mov_read_seek, |
| 4238 | .flags = AVFMT_NO_BYTE_SEEK, |
| 4239 | }; |