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00023 #include <limits.h>
00024
00025
00026
00027
00028 #include "libavutil/intreadwrite.h"
00029 #include "libavutil/intfloat.h"
00030 #include "libavutil/mathematics.h"
00031 #include "libavutil/avstring.h"
00032 #include "libavutil/dict.h"
00033 #include "avformat.h"
00034 #include "internal.h"
00035 #include "avio_internal.h"
00036 #include "riff.h"
00037 #include "isom.h"
00038 #include "libavcodec/get_bits.h"
00039 #include "id3v1.h"
00040 #include "mov_chan.h"
00041
00042 #if CONFIG_ZLIB
00043 #include <zlib.h>
00044 #endif
00045
00046
00047
00048
00049
00050
00051 #include "qtpalette.h"
00052
00053
00054 #undef NDEBUG
00055 #include <assert.h>
00056
00057
00058
00059 typedef struct MOVParseTableEntry {
00060 uint32_t type;
00061 int (*parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom);
00062 } MOVParseTableEntry;
00063
00064 static const MOVParseTableEntry mov_default_parse_table[];
00065
00066 static int mov_metadata_track_or_disc_number(MOVContext *c, AVIOContext *pb,
00067 unsigned len, const char *key)
00068 {
00069 char buf[16];
00070
00071 short current, total;
00072 avio_rb16(pb);
00073 current = avio_rb16(pb);
00074 total = avio_rb16(pb);
00075 if (!total)
00076 snprintf(buf, sizeof(buf), "%d", current);
00077 else
00078 snprintf(buf, sizeof(buf), "%d/%d", current, total);
00079 av_dict_set(&c->fc->metadata, key, buf, 0);
00080
00081 return 0;
00082 }
00083
00084 static int mov_metadata_int8_bypass_padding(MOVContext *c, AVIOContext *pb,
00085 unsigned len, const char *key)
00086 {
00087 char buf[16];
00088
00089
00090 avio_r8(pb);
00091 avio_r8(pb);
00092 avio_r8(pb);
00093
00094 snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
00095 av_dict_set(&c->fc->metadata, key, buf, 0);
00096
00097 return 0;
00098 }
00099
00100 static int mov_metadata_int8_no_padding(MOVContext *c, AVIOContext *pb,
00101 unsigned len, const char *key)
00102 {
00103 char buf[16];
00104
00105 snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
00106 av_dict_set(&c->fc->metadata, key, buf, 0);
00107
00108 return 0;
00109 }
00110
00111 static int mov_metadata_gnre(MOVContext *c, AVIOContext *pb,
00112 unsigned len, const char *key)
00113 {
00114 short genre;
00115 char buf[20];
00116
00117 avio_r8(pb);
00118
00119 genre = avio_r8(pb);
00120 if (genre < 1 || genre > ID3v1_GENRE_MAX)
00121 return 0;
00122 snprintf(buf, sizeof(buf), "%s", ff_id3v1_genre_str[genre-1]);
00123 av_dict_set(&c->fc->metadata, key, buf, 0);
00124
00125 return 0;
00126 }
00127
00128 static const uint32_t mac_to_unicode[128] = {
00129 0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1,
00130 0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8,
00131 0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3,
00132 0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC,
00133 0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF,
00134 0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8,
00135 0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211,
00136 0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8,
00137 0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB,
00138 0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153,
00139 0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA,
00140 0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02,
00141 0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1,
00142 0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4,
00143 0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC,
00144 0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7,
00145 };
00146
00147 static int mov_read_mac_string(MOVContext *c, AVIOContext *pb, int len,
00148 char *dst, int dstlen)
00149 {
00150 char *p = dst;
00151 char *end = dst+dstlen-1;
00152 int i;
00153
00154 for (i = 0; i < len; i++) {
00155 uint8_t t, c = avio_r8(pb);
00156 if (c < 0x80 && p < end)
00157 *p++ = c;
00158 else
00159 PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;);
00160 }
00161 *p = 0;
00162 return p - dst;
00163 }
00164
00165 static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00166 {
00167 #ifdef MOV_EXPORT_ALL_METADATA
00168 char tmp_key[5];
00169 #endif
00170 char str[1024], key2[16], language[4] = {0};
00171 const char *key = NULL;
00172 uint16_t str_size, langcode = 0;
00173 uint32_t data_type = 0;
00174 int (*parse)(MOVContext*, AVIOContext*, unsigned, const char*) = NULL;
00175
00176 switch (atom.type) {
00177 case MKTAG(0xa9,'n','a','m'): key = "title"; break;
00178 case MKTAG(0xa9,'a','u','t'):
00179 case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
00180 case MKTAG( 'a','A','R','T'): key = "album_artist"; break;
00181 case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
00182 case MKTAG( 'c','p','r','t'):
00183 case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
00184 case MKTAG(0xa9,'c','m','t'):
00185 case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
00186 case MKTAG(0xa9,'a','l','b'): key = "album"; break;
00187 case MKTAG(0xa9,'d','a','y'): key = "date"; break;
00188 case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
00189 case MKTAG( 'g','n','r','e'): key = "genre";
00190 parse = mov_metadata_gnre; break;
00191 case MKTAG(0xa9,'t','o','o'):
00192 case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
00193 case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
00194 case MKTAG( 'd','e','s','c'): key = "description";break;
00195 case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
00196 case MKTAG( 't','v','s','h'): key = "show"; break;
00197 case MKTAG( 't','v','e','n'): key = "episode_id";break;
00198 case MKTAG( 't','v','n','n'): key = "network"; break;
00199 case MKTAG( 't','r','k','n'): key = "track";
00200 parse = mov_metadata_track_or_disc_number; break;
00201 case MKTAG( 'd','i','s','k'): key = "disc";
00202 parse = mov_metadata_track_or_disc_number; break;
00203 case MKTAG( 't','v','e','s'): key = "episode_sort";
00204 parse = mov_metadata_int8_bypass_padding; break;
00205 case MKTAG( 't','v','s','n'): key = "season_number";
00206 parse = mov_metadata_int8_bypass_padding; break;
00207 case MKTAG( 's','t','i','k'): key = "media_type";
00208 parse = mov_metadata_int8_no_padding; break;
00209 case MKTAG( 'h','d','v','d'): key = "hd_video";
00210 parse = mov_metadata_int8_no_padding; break;
00211 case MKTAG( 'p','g','a','p'): key = "gapless_playback";
00212 parse = mov_metadata_int8_no_padding; break;
00213 }
00214
00215 if (c->itunes_metadata && atom.size > 8) {
00216 int data_size = avio_rb32(pb);
00217 int tag = avio_rl32(pb);
00218 if (tag == MKTAG('d','a','t','a')) {
00219 data_type = avio_rb32(pb);
00220 avio_rb32(pb);
00221 str_size = data_size - 16;
00222 atom.size -= 16;
00223 } else return 0;
00224 } else if (atom.size > 4 && key && !c->itunes_metadata) {
00225 str_size = avio_rb16(pb);
00226 langcode = avio_rb16(pb);
00227 ff_mov_lang_to_iso639(langcode, language);
00228 atom.size -= 4;
00229 } else
00230 str_size = atom.size;
00231
00232 #ifdef MOV_EXPORT_ALL_METADATA
00233 if (!key) {
00234 snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
00235 key = tmp_key;
00236 }
00237 #endif
00238
00239 if (!key)
00240 return 0;
00241 if (atom.size < 0)
00242 return AVERROR_INVALIDDATA;
00243
00244 str_size = FFMIN3(sizeof(str)-1, str_size, atom.size);
00245
00246 if (parse)
00247 parse(c, pb, str_size, key);
00248 else {
00249 if (data_type == 3 || (data_type == 0 && langcode < 0x800)) {
00250 mov_read_mac_string(c, pb, str_size, str, sizeof(str));
00251 } else {
00252 avio_read(pb, str, str_size);
00253 str[str_size] = 0;
00254 }
00255 av_dict_set(&c->fc->metadata, key, str, 0);
00256 if (*language && strcmp(language, "und")) {
00257 snprintf(key2, sizeof(key2), "%s-%s", key, language);
00258 av_dict_set(&c->fc->metadata, key2, str, 0);
00259 }
00260 }
00261 av_dlog(c->fc, "lang \"%3s\" ", language);
00262 av_dlog(c->fc, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n",
00263 key, str, (char*)&atom.type, str_size, atom.size);
00264
00265 return 0;
00266 }
00267
00268 static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00269 {
00270 int64_t start;
00271 int i, nb_chapters, str_len, version;
00272 char str[256+1];
00273
00274 if ((atom.size -= 5) < 0)
00275 return 0;
00276
00277 version = avio_r8(pb);
00278 avio_rb24(pb);
00279 if (version)
00280 avio_rb32(pb);
00281 nb_chapters = avio_r8(pb);
00282
00283 for (i = 0; i < nb_chapters; i++) {
00284 if (atom.size < 9)
00285 return 0;
00286
00287 start = avio_rb64(pb);
00288 str_len = avio_r8(pb);
00289
00290 if ((atom.size -= 9+str_len) < 0)
00291 return 0;
00292
00293 avio_read(pb, str, str_len);
00294 str[str_len] = 0;
00295 avpriv_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
00296 }
00297 return 0;
00298 }
00299
00300 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00301 {
00302 int64_t total_size = 0;
00303 MOVAtom a;
00304 int i;
00305
00306 if (atom.size < 0)
00307 atom.size = INT64_MAX;
00308 while (total_size + 8 < atom.size && !pb->eof_reached) {
00309 int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
00310 a.size = atom.size;
00311 a.type=0;
00312 if (atom.size >= 8) {
00313 a.size = avio_rb32(pb);
00314 a.type = avio_rl32(pb);
00315 }
00316 av_dlog(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
00317 a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
00318 total_size += 8;
00319 if (a.size == 1) {
00320 a.size = avio_rb64(pb) - 8;
00321 total_size += 8;
00322 }
00323 if (a.size == 0) {
00324 a.size = atom.size - total_size;
00325 if (a.size <= 8)
00326 break;
00327 }
00328 a.size -= 8;
00329 if (a.size < 0)
00330 break;
00331 a.size = FFMIN(a.size, atom.size - total_size);
00332
00333 for (i = 0; mov_default_parse_table[i].type; i++)
00334 if (mov_default_parse_table[i].type == a.type) {
00335 parse = mov_default_parse_table[i].parse;
00336 break;
00337 }
00338
00339
00340 if (!parse && (atom.type == MKTAG('u','d','t','a') ||
00341 atom.type == MKTAG('i','l','s','t')))
00342 parse = mov_read_udta_string;
00343
00344 if (!parse) {
00345 avio_skip(pb, a.size);
00346 } else {
00347 int64_t start_pos = avio_tell(pb);
00348 int64_t left;
00349 int err = parse(c, pb, a);
00350 if (err < 0)
00351 return err;
00352 if (c->found_moov && c->found_mdat &&
00353 (!pb->seekable || start_pos + a.size == avio_size(pb)))
00354 return 0;
00355 left = a.size - avio_tell(pb) + start_pos;
00356 if (left > 0)
00357 avio_skip(pb, left);
00358 }
00359
00360 total_size += a.size;
00361 }
00362
00363 if (total_size < atom.size && atom.size < 0x7ffff)
00364 avio_skip(pb, atom.size - total_size);
00365
00366 return 0;
00367 }
00368
00369 static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00370 {
00371 AVStream *st;
00372 MOVStreamContext *sc;
00373 int entries, i, j;
00374
00375 if (c->fc->nb_streams < 1)
00376 return 0;
00377 st = c->fc->streams[c->fc->nb_streams-1];
00378 sc = st->priv_data;
00379
00380 avio_rb32(pb);
00381 entries = avio_rb32(pb);
00382 if (entries >= UINT_MAX / sizeof(*sc->drefs))
00383 return AVERROR_INVALIDDATA;
00384 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
00385 if (!sc->drefs)
00386 return AVERROR(ENOMEM);
00387 sc->drefs_count = entries;
00388
00389 for (i = 0; i < sc->drefs_count; i++) {
00390 MOVDref *dref = &sc->drefs[i];
00391 uint32_t size = avio_rb32(pb);
00392 int64_t next = avio_tell(pb) + size - 4;
00393
00394 if (size < 12)
00395 return AVERROR_INVALIDDATA;
00396
00397 dref->type = avio_rl32(pb);
00398 avio_rb32(pb);
00399 av_dlog(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
00400
00401 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
00402
00403 uint16_t volume_len, len;
00404 int16_t type;
00405
00406 avio_skip(pb, 10);
00407
00408 volume_len = avio_r8(pb);
00409 volume_len = FFMIN(volume_len, 27);
00410 avio_read(pb, dref->volume, 27);
00411 dref->volume[volume_len] = 0;
00412 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
00413
00414 avio_skip(pb, 12);
00415
00416 len = avio_r8(pb);
00417 len = FFMIN(len, 63);
00418 avio_read(pb, dref->filename, 63);
00419 dref->filename[len] = 0;
00420 av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
00421
00422 avio_skip(pb, 16);
00423
00424
00425 dref->nlvl_from = avio_rb16(pb);
00426 dref->nlvl_to = avio_rb16(pb);
00427 av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
00428 dref->nlvl_from, dref->nlvl_to);
00429
00430 avio_skip(pb, 16);
00431
00432 for (type = 0; type != -1 && avio_tell(pb) < next; ) {
00433 type = avio_rb16(pb);
00434 len = avio_rb16(pb);
00435 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
00436 if (len&1)
00437 len += 1;
00438 if (type == 2) {
00439 av_free(dref->path);
00440 dref->path = av_mallocz(len+1);
00441 if (!dref->path)
00442 return AVERROR(ENOMEM);
00443 avio_read(pb, dref->path, len);
00444 if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
00445 len -= volume_len;
00446 memmove(dref->path, dref->path+volume_len, len);
00447 dref->path[len] = 0;
00448 }
00449 for (j = 0; j < len; j++)
00450 if (dref->path[j] == ':')
00451 dref->path[j] = '/';
00452 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
00453 } else if (type == 0) {
00454 av_free(dref->dir);
00455 dref->dir = av_malloc(len+1);
00456 if (!dref->dir)
00457 return AVERROR(ENOMEM);
00458 avio_read(pb, dref->dir, len);
00459 dref->dir[len] = 0;
00460 for (j = 0; j < len; j++)
00461 if (dref->dir[j] == ':')
00462 dref->dir[j] = '/';
00463 av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
00464 } else
00465 avio_skip(pb, len);
00466 }
00467 }
00468 avio_seek(pb, next, SEEK_SET);
00469 }
00470 return 0;
00471 }
00472
00473 static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00474 {
00475 AVStream *st;
00476 uint32_t type;
00477 uint32_t av_unused ctype;
00478
00479 if (c->fc->nb_streams < 1)
00480 return 0;
00481
00482 st = c->fc->streams[c->fc->nb_streams-1];
00483
00484 avio_r8(pb);
00485 avio_rb24(pb);
00486
00487
00488 ctype = avio_rl32(pb);
00489 type = avio_rl32(pb);
00490
00491 av_dlog(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
00492 av_dlog(c->fc, "stype= %.4s\n", (char*)&type);
00493
00494 if (type == MKTAG('v','i','d','e'))
00495 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
00496 else if (type == MKTAG('s','o','u','n'))
00497 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
00498 else if (type == MKTAG('m','1','a',' '))
00499 st->codec->codec_id = CODEC_ID_MP2;
00500 else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p')))
00501 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
00502
00503 avio_rb32(pb);
00504 avio_rb32(pb);
00505 avio_rb32(pb);
00506
00507 return 0;
00508 }
00509
00510 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb, MOVAtom atom)
00511 {
00512 AVStream *st;
00513 int tag;
00514
00515 if (fc->nb_streams < 1)
00516 return 0;
00517 st = fc->streams[fc->nb_streams-1];
00518
00519 avio_rb32(pb);
00520 ff_mp4_read_descr(fc, pb, &tag);
00521 if (tag == MP4ESDescrTag) {
00522 ff_mp4_parse_es_descr(pb, NULL);
00523 } else
00524 avio_rb16(pb);
00525
00526 ff_mp4_read_descr(fc, pb, &tag);
00527 if (tag == MP4DecConfigDescrTag)
00528 ff_mp4_read_dec_config_descr(fc, st, pb);
00529 return 0;
00530 }
00531
00532 static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00533 {
00534 return ff_mov_read_esds(c->fc, pb, atom);
00535 }
00536
00537 static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00538 {
00539 AVStream *st;
00540 int ac3info, acmod, lfeon, bsmod;
00541
00542 if (c->fc->nb_streams < 1)
00543 return 0;
00544 st = c->fc->streams[c->fc->nb_streams-1];
00545
00546 ac3info = avio_rb24(pb);
00547 bsmod = (ac3info >> 14) & 0x7;
00548 acmod = (ac3info >> 11) & 0x7;
00549 lfeon = (ac3info >> 10) & 0x1;
00550 st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
00551 st->codec->audio_service_type = bsmod;
00552 if (st->codec->channels > 1 && bsmod == 0x7)
00553 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
00554
00555 return 0;
00556 }
00557
00558 static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00559 {
00560 AVStream *st;
00561 uint8_t version;
00562 uint32_t flags, layout_tag, bitmap, num_descr, label_mask;
00563 int i;
00564
00565 if (c->fc->nb_streams < 1)
00566 return 0;
00567 st = c->fc->streams[c->fc->nb_streams-1];
00568
00569 if (atom.size < 16)
00570 return 0;
00571
00572 version = avio_r8(pb);
00573 flags = avio_rb24(pb);
00574
00575 layout_tag = avio_rb32(pb);
00576 bitmap = avio_rb32(pb);
00577 num_descr = avio_rb32(pb);
00578
00579 if (atom.size < 16ULL + num_descr * 20ULL)
00580 return 0;
00581
00582 av_dlog(c->fc, "chan: size=%ld version=%u flags=%u layout=%u bitmap=%u num_descr=%u\n",
00583 atom.size, version, flags, layout_tag, bitmap, num_descr);
00584
00585 label_mask = 0;
00586 for (i = 0; i < num_descr; i++) {
00587 uint32_t label, cflags;
00588 label = avio_rb32(pb);
00589 cflags = avio_rb32(pb);
00590 avio_rl32(pb);
00591 avio_rl32(pb);
00592 avio_rl32(pb);
00593 if (layout_tag == 0) {
00594 uint32_t mask_incr = ff_mov_get_channel_label(label);
00595 if (mask_incr == 0) {
00596 label_mask = 0;
00597 break;
00598 }
00599 label_mask |= mask_incr;
00600 }
00601 }
00602 if (layout_tag == 0)
00603 st->codec->channel_layout = label_mask;
00604 else
00605 st->codec->channel_layout = ff_mov_get_channel_layout(layout_tag, bitmap);
00606
00607 return 0;
00608 }
00609
00610 static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00611 {
00612 AVStream *st;
00613
00614 if (c->fc->nb_streams < 1)
00615 return 0;
00616 st = c->fc->streams[c->fc->nb_streams-1];
00617
00618 ff_get_wav_header(pb, st->codec, atom.size);
00619
00620 return 0;
00621 }
00622
00623 static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00624 {
00625 const int num = avio_rb32(pb);
00626 const int den = avio_rb32(pb);
00627 AVStream *st;
00628
00629 if (c->fc->nb_streams < 1)
00630 return 0;
00631 st = c->fc->streams[c->fc->nb_streams-1];
00632
00633 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) &&
00634 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
00635 av_log(c->fc, AV_LOG_WARNING,
00636 "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
00637 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
00638 num, den);
00639 } else if (den != 0) {
00640 st->sample_aspect_ratio.num = num;
00641 st->sample_aspect_ratio.den = den;
00642 }
00643 return 0;
00644 }
00645
00646
00647 static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00648 {
00649 if (atom.size == 0)
00650 return 0;
00651 c->found_mdat=1;
00652 return 0;
00653 }
00654
00655
00656 static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00657 {
00658 uint32_t minor_ver;
00659 int comp_brand_size;
00660 char minor_ver_str[11];
00661 char* comp_brands_str;
00662 uint8_t type[5] = {0};
00663
00664 avio_read(pb, type, 4);
00665 if (strcmp(type, "qt "))
00666 c->isom = 1;
00667 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
00668 av_dict_set(&c->fc->metadata, "major_brand", type, 0);
00669 minor_ver = avio_rb32(pb);
00670 snprintf(minor_ver_str, sizeof(minor_ver_str), "%d", minor_ver);
00671 av_dict_set(&c->fc->metadata, "minor_version", minor_ver_str, 0);
00672
00673 comp_brand_size = atom.size - 8;
00674 if (comp_brand_size < 0)
00675 return AVERROR_INVALIDDATA;
00676 comp_brands_str = av_malloc(comp_brand_size + 1);
00677 if (!comp_brands_str)
00678 return AVERROR(ENOMEM);
00679 avio_read(pb, comp_brands_str, comp_brand_size);
00680 comp_brands_str[comp_brand_size] = 0;
00681 av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
00682 av_freep(&comp_brands_str);
00683
00684 return 0;
00685 }
00686
00687
00688 static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00689 {
00690 int ret;
00691
00692 if ((ret = mov_read_default(c, pb, atom)) < 0)
00693 return ret;
00694
00695
00696 c->found_moov=1;
00697 return 0;
00698 }
00699
00700 static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00701 {
00702 c->fragment.moof_offset = avio_tell(pb) - 8;
00703 av_dlog(c->fc, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
00704 return mov_read_default(c, pb, atom);
00705 }
00706
00707 static void mov_metadata_creation_time(AVDictionary **metadata, time_t time)
00708 {
00709 char buffer[32];
00710 if (time) {
00711 struct tm *ptm;
00712 time -= 2082844800;
00713 ptm = gmtime(&time);
00714 if (!ptm) return;
00715 strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm);
00716 av_dict_set(metadata, "creation_time", buffer, 0);
00717 }
00718 }
00719
00720 static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00721 {
00722 AVStream *st;
00723 MOVStreamContext *sc;
00724 int version;
00725 char language[4] = {0};
00726 unsigned lang;
00727 time_t creation_time;
00728
00729 if (c->fc->nb_streams < 1)
00730 return 0;
00731 st = c->fc->streams[c->fc->nb_streams-1];
00732 sc = st->priv_data;
00733
00734 version = avio_r8(pb);
00735 if (version > 1) {
00736 av_log_ask_for_sample(c, "unsupported version %d\n", version);
00737 return AVERROR_PATCHWELCOME;
00738 }
00739 avio_rb24(pb);
00740 if (version == 1) {
00741 creation_time = avio_rb64(pb);
00742 avio_rb64(pb);
00743 } else {
00744 creation_time = avio_rb32(pb);
00745 avio_rb32(pb);
00746 }
00747 mov_metadata_creation_time(&st->metadata, creation_time);
00748
00749 sc->time_scale = avio_rb32(pb);
00750 st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
00751
00752 lang = avio_rb16(pb);
00753 if (ff_mov_lang_to_iso639(lang, language))
00754 av_dict_set(&st->metadata, "language", language, 0);
00755 avio_rb16(pb);
00756
00757 return 0;
00758 }
00759
00760 static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00761 {
00762 time_t creation_time;
00763 int version = avio_r8(pb);
00764 avio_rb24(pb);
00765
00766 if (version == 1) {
00767 creation_time = avio_rb64(pb);
00768 avio_rb64(pb);
00769 } else {
00770 creation_time = avio_rb32(pb);
00771 avio_rb32(pb);
00772 }
00773 mov_metadata_creation_time(&c->fc->metadata, creation_time);
00774 c->time_scale = avio_rb32(pb);
00775
00776 av_dlog(c->fc, "time scale = %i\n", c->time_scale);
00777
00778 c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
00779 avio_rb32(pb);
00780
00781 avio_rb16(pb);
00782
00783 avio_skip(pb, 10);
00784
00785 avio_skip(pb, 36);
00786
00787 avio_rb32(pb);
00788 avio_rb32(pb);
00789 avio_rb32(pb);
00790 avio_rb32(pb);
00791 avio_rb32(pb);
00792 avio_rb32(pb);
00793 avio_rb32(pb);
00794
00795 return 0;
00796 }
00797
00798 static int mov_read_smi(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00799 {
00800 AVStream *st;
00801
00802 if (c->fc->nb_streams < 1)
00803 return 0;
00804 st = c->fc->streams[c->fc->nb_streams-1];
00805
00806 if ((uint64_t)atom.size > (1<<30))
00807 return AVERROR_INVALIDDATA;
00808
00809
00810
00811 av_free(st->codec->extradata);
00812 st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
00813 if (!st->codec->extradata)
00814 return AVERROR(ENOMEM);
00815 st->codec->extradata_size = 0x5a + atom.size;
00816 memcpy(st->codec->extradata, "SVQ3", 4);
00817 avio_read(pb, st->codec->extradata + 0x5a, atom.size);
00818 av_dlog(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
00819 return 0;
00820 }
00821
00822 static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00823 {
00824 AVStream *st;
00825 int little_endian;
00826
00827 if (c->fc->nb_streams < 1)
00828 return 0;
00829 st = c->fc->streams[c->fc->nb_streams-1];
00830
00831 little_endian = avio_rb16(pb);
00832 av_dlog(c->fc, "enda %d\n", little_endian);
00833 if (little_endian == 1) {
00834 switch (st->codec->codec_id) {
00835 case CODEC_ID_PCM_S24BE:
00836 st->codec->codec_id = CODEC_ID_PCM_S24LE;
00837 break;
00838 case CODEC_ID_PCM_S32BE:
00839 st->codec->codec_id = CODEC_ID_PCM_S32LE;
00840 break;
00841 case CODEC_ID_PCM_F32BE:
00842 st->codec->codec_id = CODEC_ID_PCM_F32LE;
00843 break;
00844 case CODEC_ID_PCM_F64BE:
00845 st->codec->codec_id = CODEC_ID_PCM_F64LE;
00846 break;
00847 default:
00848 break;
00849 }
00850 }
00851 return 0;
00852 }
00853
00854 static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00855 {
00856 AVStream *st;
00857 unsigned mov_field_order;
00858 enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN;
00859
00860 if (c->fc->nb_streams < 1)
00861 return 0;
00862 st = c->fc->streams[c->fc->nb_streams-1];
00863 if (atom.size < 2)
00864 return AVERROR_INVALIDDATA;
00865 mov_field_order = avio_rb16(pb);
00866 if ((mov_field_order & 0xFF00) == 0x0100)
00867 decoded_field_order = AV_FIELD_PROGRESSIVE;
00868 else if ((mov_field_order & 0xFF00) == 0x0200) {
00869 switch (mov_field_order & 0xFF) {
00870 case 0x01: decoded_field_order = AV_FIELD_TT;
00871 break;
00872 case 0x06: decoded_field_order = AV_FIELD_BB;
00873 break;
00874 case 0x09: decoded_field_order = AV_FIELD_TB;
00875 break;
00876 case 0x0E: decoded_field_order = AV_FIELD_BT;
00877 break;
00878 }
00879 }
00880 if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) {
00881 av_log(NULL, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order);
00882 }
00883 st->codec->field_order = decoded_field_order;
00884
00885 return 0;
00886 }
00887
00888
00889 static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00890 {
00891 AVStream *st;
00892 uint64_t size;
00893 uint8_t *buf;
00894
00895 if (c->fc->nb_streams < 1)
00896 return 0;
00897 st= c->fc->streams[c->fc->nb_streams-1];
00898 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
00899 if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
00900 return AVERROR_INVALIDDATA;
00901 buf= av_realloc(st->codec->extradata, size);
00902 if (!buf)
00903 return AVERROR(ENOMEM);
00904 st->codec->extradata= buf;
00905 buf+= st->codec->extradata_size;
00906 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
00907 AV_WB32( buf , atom.size + 8);
00908 AV_WL32( buf + 4, atom.type);
00909 avio_read(pb, buf + 8, atom.size);
00910 return 0;
00911 }
00912
00913 static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00914 {
00915 AVStream *st;
00916
00917 if (c->fc->nb_streams < 1)
00918 return 0;
00919 st = c->fc->streams[c->fc->nb_streams-1];
00920
00921 if ((uint64_t)atom.size > (1<<30))
00922 return AVERROR_INVALIDDATA;
00923
00924 if (st->codec->codec_id == CODEC_ID_QDM2 || st->codec->codec_id == CODEC_ID_QDMC) {
00925
00926 av_free(st->codec->extradata);
00927 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
00928 if (!st->codec->extradata)
00929 return AVERROR(ENOMEM);
00930 st->codec->extradata_size = atom.size;
00931 avio_read(pb, st->codec->extradata, atom.size);
00932 } else if (atom.size > 8) {
00933 int ret;
00934 if ((ret = mov_read_default(c, pb, atom)) < 0)
00935 return ret;
00936 } else
00937 avio_skip(pb, atom.size);
00938 return 0;
00939 }
00940
00945 static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00946 {
00947 AVStream *st;
00948
00949 if (c->fc->nb_streams < 1)
00950 return 0;
00951 st = c->fc->streams[c->fc->nb_streams-1];
00952
00953 if ((uint64_t)atom.size > (1<<30))
00954 return AVERROR_INVALIDDATA;
00955
00956 if (atom.size >= 10) {
00957
00958
00959 unsigned size = avio_rb32(pb);
00960 unsigned type = avio_rl32(pb);
00961 avio_seek(pb, -8, SEEK_CUR);
00962 if (type == MKTAG('f','i','e','l') && size == atom.size)
00963 return mov_read_default(c, pb, atom);
00964 }
00965 av_free(st->codec->extradata);
00966 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
00967 if (!st->codec->extradata)
00968 return AVERROR(ENOMEM);
00969 st->codec->extradata_size = atom.size;
00970 avio_read(pb, st->codec->extradata, atom.size);
00971 return 0;
00972 }
00973
00979 static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00980 {
00981 AVStream *st;
00982
00983 if (c->fc->nb_streams < 1)
00984 return 0;
00985 if (atom.size <= 40)
00986 return 0;
00987 st = c->fc->streams[c->fc->nb_streams-1];
00988
00989 if ((uint64_t)atom.size > (1<<30))
00990 return AVERROR_INVALIDDATA;
00991
00992 av_free(st->codec->extradata);
00993 st->codec->extradata = av_mallocz(atom.size - 40 + FF_INPUT_BUFFER_PADDING_SIZE);
00994 if (!st->codec->extradata)
00995 return AVERROR(ENOMEM);
00996 st->codec->extradata_size = atom.size - 40;
00997 avio_skip(pb, 40);
00998 avio_read(pb, st->codec->extradata, atom.size - 40);
00999 return 0;
01000 }
01001
01002 static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
01003 {
01004 AVStream *st;
01005 MOVStreamContext *sc;
01006 unsigned int i, entries;
01007
01008 if (c->fc->nb_streams < 1)
01009 return 0;
01010 st = c->fc->streams[c->fc->nb_streams-1];
01011 sc = st->priv_data;
01012
01013 avio_r8(pb);
01014 avio_rb24(pb);
01015
01016 entries = avio_rb32(pb);
01017
01018 if (!entries)
01019 return 0;
01020 if (entries >= UINT_MAX/sizeof(int64_t))
01021 return AVERROR_INVALIDDATA;
01022
01023 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
01024 if (!sc->chunk_offsets)
01025 return AVERROR(ENOMEM);
01026 sc->chunk_count = entries;
01027
01028 if (atom.type == MKTAG('s','t','c','o'))
01029 for (i=0; i<entries; i++)
01030 sc->chunk_offsets[i] = avio_rb32(pb);
01031 else if (atom.type == MKTAG('c','o','6','4'))
01032 for (i=0; i<entries; i++)
01033 sc->chunk_offsets[i] = avio_rb64(pb);
01034 else
01035 return AVERROR_INVALIDDATA;
01036
01037 return 0;
01038 }
01039
01044 enum CodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
01045 {
01046 if (flags & 1) {
01047 if (flags & 2) {
01048 if (bps == 32) return CODEC_ID_PCM_F32BE;
01049 else if (bps == 64) return CODEC_ID_PCM_F64BE;
01050 } else {
01051 if (bps == 32) return CODEC_ID_PCM_F32LE;
01052 else if (bps == 64) return CODEC_ID_PCM_F64LE;
01053 }
01054 } else {
01055 if (flags & 2) {
01056 if (bps == 8)
01057
01058 if (flags & 4) return CODEC_ID_PCM_S8;
01059 else return CODEC_ID_PCM_U8;
01060 else if (bps == 16) return CODEC_ID_PCM_S16BE;
01061 else if (bps == 24) return CODEC_ID_PCM_S24BE;
01062 else if (bps == 32) return CODEC_ID_PCM_S32BE;
01063 } else {
01064 if (bps == 8)
01065 if (flags & 4) return CODEC_ID_PCM_S8;
01066 else return CODEC_ID_PCM_U8;
01067 else if (bps == 16) return CODEC_ID_PCM_S16LE;
01068 else if (bps == 24) return CODEC_ID_PCM_S24LE;
01069 else if (bps == 32) return CODEC_ID_PCM_S32LE;
01070 }
01071 }
01072 return CODEC_ID_NONE;
01073 }
01074
01075 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
01076 {
01077 AVStream *st;
01078 MOVStreamContext *sc;
01079 int j, pseudo_stream_id;
01080
01081 if (c->fc->nb_streams < 1)
01082 return 0;
01083 st = c->fc->streams[c->fc->nb_streams-1];
01084 sc = st->priv_data;
01085
01086 for (pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) {
01087
01088 enum CodecID id;
01089 int dref_id = 1;
01090 MOVAtom a = { AV_RL32("stsd") };
01091 int64_t start_pos = avio_tell(pb);
01092 int size = avio_rb32(pb);
01093 uint32_t format = avio_rl32(pb);
01094
01095 if (size >= 16) {
01096 avio_rb32(pb);
01097 avio_rb16(pb);
01098 dref_id = avio_rb16(pb);
01099 }
01100
01101 if (st->codec->codec_tag &&
01102 st->codec->codec_tag != format &&
01103 (c->fc->video_codec_id ? ff_codec_get_id(codec_movvideo_tags, format) != c->fc->video_codec_id
01104 : st->codec->codec_tag != MKTAG('j','p','e','g'))
01105 ){
01106
01107
01108
01109 multiple_stsd:
01110 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
01111 avio_skip(pb, size - (avio_tell(pb) - start_pos));
01112 continue;
01113 }
01114
01115 if (st->codec->codec_tag && st->codec->codec_tag == AV_RL32("avc1"))
01116 goto multiple_stsd;
01117 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
01118 sc->dref_id= dref_id;
01119
01120 st->codec->codec_tag = format;
01121 id = ff_codec_get_id(codec_movaudio_tags, format);
01122 if (id<=0 && ((format&0xFFFF) == 'm'+('s'<<8) || (format&0xFFFF) == 'T'+('S'<<8)))
01123 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format)&0xFFFF);
01124
01125 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
01126 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
01127 } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO &&
01128 format && format != MKTAG('m','p','4','s')) {
01129 id = ff_codec_get_id(codec_movvideo_tags, format);
01130 if (id <= 0)
01131 id = ff_codec_get_id(ff_codec_bmp_tags, format);
01132 if (id > 0)
01133 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
01134 else if (st->codec->codec_type == AVMEDIA_TYPE_DATA){
01135 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
01136 if (id > 0)
01137 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
01138 }
01139 }
01140
01141 av_dlog(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
01142 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
01143 (format >> 24) & 0xff, st->codec->codec_type);
01144
01145 if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
01146 unsigned int color_depth, len;
01147 int color_greyscale;
01148
01149 st->codec->codec_id = id;
01150 avio_rb16(pb);
01151 avio_rb16(pb);
01152 avio_rb32(pb);
01153 avio_rb32(pb);
01154 avio_rb32(pb);
01155
01156 st->codec->width = avio_rb16(pb);
01157 st->codec->height = avio_rb16(pb);
01158
01159 avio_rb32(pb);
01160 avio_rb32(pb);
01161 avio_rb32(pb);
01162 avio_rb16(pb);
01163
01164 len = avio_r8(pb);
01165 if (len > 31)
01166 len = 31;
01167 mov_read_mac_string(c, pb, len, st->codec->codec_name, 32);
01168 if (len < 31)
01169 avio_skip(pb, 31 - len);
01170
01171 if (!memcmp(st->codec->codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25))
01172 st->codec->codec_tag=MKTAG('I', '4', '2', '0');
01173
01174 st->codec->bits_per_coded_sample = avio_rb16(pb);
01175 st->codec->color_table_id = avio_rb16(pb);
01176 av_dlog(c->fc, "depth %d, ctab id %d\n",
01177 st->codec->bits_per_coded_sample, st->codec->color_table_id);
01178
01179 color_depth = st->codec->bits_per_coded_sample & 0x1F;
01180 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
01181
01182
01183 if ((color_depth == 2) || (color_depth == 4) ||
01184 (color_depth == 8)) {
01185
01186 unsigned int color_start, color_count, color_end;
01187 unsigned char r, g, b;
01188
01189 if (color_greyscale) {
01190 int color_index, color_dec;
01191
01192 st->codec->bits_per_coded_sample = color_depth;
01193 color_count = 1 << color_depth;
01194 color_index = 255;
01195 color_dec = 256 / (color_count - 1);
01196 for (j = 0; j < color_count; j++) {
01197 r = g = b = color_index;
01198 sc->palette[j] =
01199 (r << 16) | (g << 8) | (b);
01200 color_index -= color_dec;
01201 if (color_index < 0)
01202 color_index = 0;
01203 }
01204 } else if (st->codec->color_table_id) {
01205 const uint8_t *color_table;
01206
01207 color_count = 1 << color_depth;
01208 if (color_depth == 2)
01209 color_table = ff_qt_default_palette_4;
01210 else if (color_depth == 4)
01211 color_table = ff_qt_default_palette_16;
01212 else
01213 color_table = ff_qt_default_palette_256;
01214
01215 for (j = 0; j < color_count; j++) {
01216 r = color_table[j * 3 + 0];
01217 g = color_table[j * 3 + 1];
01218 b = color_table[j * 3 + 2];
01219 sc->palette[j] =
01220 (r << 16) | (g << 8) | (b);
01221 }
01222 } else {
01223
01224 color_start = avio_rb32(pb);
01225 color_count = avio_rb16(pb);
01226 color_end = avio_rb16(pb);
01227 if ((color_start <= 255) &&
01228 (color_end <= 255)) {
01229 for (j = color_start; j <= color_end; j++) {
01230
01231
01232
01233 avio_r8(pb);
01234 avio_r8(pb);
01235 r = avio_r8(pb);
01236 avio_r8(pb);
01237 g = avio_r8(pb);
01238 avio_r8(pb);
01239 b = avio_r8(pb);
01240 avio_r8(pb);
01241 sc->palette[j] =
01242 (r << 16) | (g << 8) | (b);
01243 }
01244 }
01245 }
01246 sc->has_palette = 1;
01247 }
01248 } else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
01249 int bits_per_sample, flags;
01250 uint16_t version = avio_rb16(pb);
01251
01252 st->codec->codec_id = id;
01253 avio_rb16(pb);
01254 avio_rb32(pb);
01255
01256 st->codec->channels = avio_rb16(pb);
01257 av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
01258 st->codec->bits_per_coded_sample = avio_rb16(pb);
01259
01260 sc->audio_cid = avio_rb16(pb);
01261 avio_rb16(pb);
01262
01263 st->codec->sample_rate = ((avio_rb32(pb) >> 16));
01264
01265
01266 av_dlog(c->fc, "version =%d, isom =%d\n",version,c->isom);
01267 if (!c->isom) {
01268 if (version==1) {
01269 sc->samples_per_frame = avio_rb32(pb);
01270 avio_rb32(pb);
01271 sc->bytes_per_frame = avio_rb32(pb);
01272 avio_rb32(pb);
01273 } else if (version==2) {
01274 avio_rb32(pb);
01275 st->codec->sample_rate = av_int2double(avio_rb64(pb));
01276 st->codec->channels = avio_rb32(pb);
01277 avio_rb32(pb);
01278 st->codec->bits_per_coded_sample = avio_rb32(pb);
01279 flags = avio_rb32(pb);
01280 sc->bytes_per_frame = avio_rb32(pb);
01281 sc->samples_per_frame = avio_rb32(pb);
01282 if (format == MKTAG('l','p','c','m'))
01283 st->codec->codec_id = ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags);
01284 }
01285 }
01286
01287 switch (st->codec->codec_id) {
01288 case CODEC_ID_PCM_S8:
01289 case CODEC_ID_PCM_U8:
01290 if (st->codec->bits_per_coded_sample == 16)
01291 st->codec->codec_id = CODEC_ID_PCM_S16BE;
01292 break;
01293 case CODEC_ID_PCM_S16LE:
01294 case CODEC_ID_PCM_S16BE:
01295 if (st->codec->bits_per_coded_sample == 8)
01296 st->codec->codec_id = CODEC_ID_PCM_S8;
01297 else if (st->codec->bits_per_coded_sample == 24)
01298 st->codec->codec_id =
01299 st->codec->codec_id == CODEC_ID_PCM_S16BE ?
01300 CODEC_ID_PCM_S24BE : CODEC_ID_PCM_S24LE;
01301 break;
01302
01303 case CODEC_ID_MACE3:
01304 sc->samples_per_frame = 6;
01305 sc->bytes_per_frame = 2*st->codec->channels;
01306 break;
01307 case CODEC_ID_MACE6:
01308 sc->samples_per_frame = 6;
01309 sc->bytes_per_frame = 1*st->codec->channels;
01310 break;
01311 case CODEC_ID_ADPCM_IMA_QT:
01312 sc->samples_per_frame = 64;
01313 sc->bytes_per_frame = 34*st->codec->channels;
01314 break;
01315 case CODEC_ID_GSM:
01316 sc->samples_per_frame = 160;
01317 sc->bytes_per_frame = 33;
01318 break;
01319 default:
01320 break;
01321 }
01322
01323 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
01324 if (bits_per_sample) {
01325 st->codec->bits_per_coded_sample = bits_per_sample;
01326 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
01327 }
01328 } else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
01329
01330
01331 MOVAtom fake_atom = { .size = size - (avio_tell(pb) - start_pos) };
01332 if (format != AV_RL32("mp4s"))
01333 mov_read_glbl(c, pb, fake_atom);
01334 st->codec->codec_id= id;
01335 st->codec->width = sc->width;
01336 st->codec->height = sc->height;
01337 } else {
01338
01339 avio_skip(pb, size - (avio_tell(pb) - start_pos));
01340 }
01341
01342 a.size = size - (avio_tell(pb) - start_pos);
01343 if (a.size > 8) {
01344 int ret;
01345 if ((ret = mov_read_default(c, pb, a)) < 0)
01346 return ret;
01347 } else if (a.size > 0)
01348 avio_skip(pb, a.size);
01349 }
01350
01351 if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
01352 st->codec->sample_rate= sc->time_scale;
01353
01354
01355 switch (st->codec->codec_id) {
01356 #if CONFIG_DV_DEMUXER
01357 case CODEC_ID_DVAUDIO:
01358 c->dv_fctx = avformat_alloc_context();
01359 c->dv_demux = avpriv_dv_init_demux(c->dv_fctx);
01360 if (!c->dv_demux) {
01361 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
01362 return AVERROR(ENOMEM);
01363 }
01364 sc->dv_audio_container = 1;
01365 st->codec->codec_id = CODEC_ID_PCM_S16LE;
01366 break;
01367 #endif
01368
01369 case CODEC_ID_QCELP:
01370
01371 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
01372 st->codec->sample_rate = 8000;
01373 st->codec->frame_size= 160;
01374 st->codec->channels= 1;
01375 break;
01376 case CODEC_ID_AMR_NB:
01377 st->codec->channels= 1;
01378
01379 st->codec->sample_rate = 8000;
01380
01381 st->codec->frame_size = 160;
01382 break;
01383 case CODEC_ID_AMR_WB:
01384 st->codec->channels = 1;
01385 st->codec->sample_rate = 16000;
01386 st->codec->frame_size = 320;
01387 break;
01388 case CODEC_ID_MP2:
01389 case CODEC_ID_MP3:
01390 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
01391 st->need_parsing = AVSTREAM_PARSE_FULL;
01392 break;
01393 case CODEC_ID_GSM:
01394 case CODEC_ID_ADPCM_MS:
01395 case CODEC_ID_ADPCM_IMA_WAV:
01396 st->codec->frame_size = sc->samples_per_frame;
01397 st->codec->block_align = sc->bytes_per_frame;
01398 break;
01399 case CODEC_ID_ALAC:
01400 if (st->codec->extradata_size == 36) {
01401 st->codec->frame_size = AV_RB32(st->codec->extradata+12);
01402 st->codec->channels = AV_RB8 (st->codec->extradata+21);
01403 st->codec->sample_rate = AV_RB32(st->codec->extradata+32);
01404 }
01405 break;
01406 default:
01407 break;
01408 }
01409
01410 return 0;
01411 }
01412
01413 static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
01414 {
01415 int entries;
01416
01417 avio_r8(pb);
01418 avio_rb24(pb);
01419 entries = avio_rb32(pb);
01420
01421 return ff_mov_read_stsd_entries(c, pb, entries);
01422 }
01423
01424 static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
01425 {
01426 AVStream *st;
01427 MOVStreamContext *sc;
01428 unsigned int i, entries;
01429
01430 if (c->fc->nb_streams < 1)
01431 return 0;
01432 st = c->fc->streams[c->fc->nb_streams-1];
01433 sc = st->priv_data;
01434
01435 avio_r8(pb);
01436 avio_rb24(pb);
01437
01438 entries = avio_rb32(pb);
01439
01440 av_dlog(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
01441
01442 if (!entries)
01443 return 0;
01444 if (entries >= UINT_MAX / sizeof(*sc->stsc_data))
01445 return AVERROR_INVALIDDATA;
01446 sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
01447 if (!sc->stsc_data)
01448 return AVERROR(ENOMEM);
01449 sc->stsc_count = entries;
01450
01451 for (i=0; i<entries; i++) {
01452 sc->stsc_data[i].first = avio_rb32(pb);
01453 sc->stsc_data[i].count = avio_rb32(pb);
01454 sc->stsc_data[i].id = avio_rb32(pb);
01455 }
01456 return 0;
01457 }
01458
01459 static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
01460 {
01461 AVStream *st;
01462 MOVStreamContext *sc;
01463 unsigned i, entries;
01464
01465 if (c->fc->nb_streams < 1)
01466 return 0;
01467 st = c->fc->streams[c->fc->nb_streams-1];
01468 sc = st->priv_data;
01469
01470 avio_rb32(pb);
01471
01472 entries = avio_rb32(pb);
01473 if (entries >= UINT_MAX / sizeof(*sc->stps_data))
01474 return AVERROR_INVALIDDATA;
01475 sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
01476 if (!sc->stps_data)
01477 return AVERROR(ENOMEM);
01478 sc->stps_count = entries;
01479
01480 for (i = 0; i < entries; i++) {
01481 sc->stps_data[i] = avio_rb32(pb);
01482
01483 }
01484
01485 return 0;
01486 }
01487
01488 static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
01489 {
01490 AVStream *st;
01491 MOVStreamContext *sc;
01492 unsigned int i, entries;
01493
01494 if (c->fc->nb_streams < 1)
01495 return 0;
01496 st = c->fc->streams[c->fc->nb_streams-1];
01497 sc = st->priv_data;
01498
01499 avio_r8(pb);
01500 avio_rb24(pb);
01501
01502 entries = avio_rb32(pb);
01503
01504 av_dlog(c->fc, "keyframe_count = %d\n", entries);
01505
01506 if (entries >= UINT_MAX / sizeof(int))
01507 return AVERROR_INVALIDDATA;
01508 sc->keyframes = av_malloc(entries * sizeof(int));
01509 if (!sc->keyframes)
01510 return AVERROR(ENOMEM);
01511 sc->keyframe_count = entries;
01512
01513 for (i=0; i<entries; i++) {
01514 sc->keyframes[i] = avio_rb32(pb);
01515
01516 }
01517 return 0;
01518 }
01519
01520 static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
01521 {
01522 AVStream *st;
01523 MOVStreamContext *sc;
01524 unsigned int i, entries, sample_size, field_size, num_bytes;
01525 GetBitContext gb;
01526 unsigned char* buf;
01527
01528 if (c->fc->nb_streams < 1)
01529 return 0;
01530 st = c->fc->streams[c->fc->nb_streams-1];
01531 sc = st->priv_data;
01532
01533 avio_r8(pb);
01534 avio_rb24(pb);
01535
01536 if (atom.type == MKTAG('s','t','s','z')) {
01537 sample_size = avio_rb32(pb);
01538 if (!sc->sample_size)
01539 sc->sample_size = sample_size;
01540 field_size = 32;
01541 } else {
01542 sample_size = 0;
01543 avio_rb24(pb);
01544 field_size = avio_r8(pb);
01545 }
01546 entries = avio_rb32(pb);
01547
01548 av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
01549
01550 sc->sample_count = entries;
01551 if (sample_size)
01552 return 0;
01553
01554 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
01555 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
01556 return AVERROR_INVALIDDATA;
01557 }
01558
01559 if (!entries)
01560 return 0;
01561 if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
01562 return AVERROR_INVALIDDATA;
01563 sc->sample_sizes = av_malloc(entries * sizeof(int));
01564 if (!sc->sample_sizes)
01565 return AVERROR(ENOMEM);
01566
01567 num_bytes = (entries*field_size+4)>>3;
01568
01569 buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
01570 if (!buf) {
01571 av_freep(&sc->sample_sizes);
01572 return AVERROR(ENOMEM);
01573 }
01574
01575 if (avio_read(pb, buf, num_bytes) < num_bytes) {
01576 av_freep(&sc->sample_sizes);
01577 av_free(buf);
01578 return AVERROR_INVALIDDATA;
01579 }
01580
01581 init_get_bits(&gb, buf, 8*num_bytes);
01582
01583 for (i=0; i<entries; i++)
01584 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
01585
01586 av_free(buf);
01587 return 0;
01588 }
01589
01590 static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
01591 {
01592 AVStream *st;
01593 MOVStreamContext *sc;
01594 unsigned int i, entries;
01595 int64_t duration=0;
01596 int64_t total_sample_count=0;
01597
01598 if (c->fc->nb_streams < 1)
01599 return 0;
01600 st = c->fc->streams[c->fc->nb_streams-1];
01601 sc = st->priv_data;
01602
01603 avio_r8(pb);
01604 avio_rb24(pb);
01605 entries = avio_rb32(pb);
01606
01607 av_dlog(c->fc, "track[%i].stts.entries = %i\n",
01608 c->fc->nb_streams-1, entries);
01609
01610 if (!entries)
01611 return 0;
01612 if (entries >= UINT_MAX / sizeof(*sc->stts_data))
01613 return AVERROR(EINVAL);
01614
01615 sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
01616 if (!sc->stts_data)
01617 return AVERROR(ENOMEM);
01618
01619 sc->stts_count = entries;
01620
01621 for (i=0; i<entries; i++) {
01622 int sample_duration;
01623 int sample_count;
01624
01625 sample_count=avio_rb32(pb);
01626 sample_duration = avio_rb32(pb);
01627 sc->stts_data[i].count= sample_count;
01628 sc->stts_data[i].duration= sample_duration;
01629
01630 av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n",
01631 sample_count, sample_duration);
01632
01633 duration+=(int64_t)sample_duration*sample_count;
01634 total_sample_count+=sample_count;
01635 }
01636
01637 st->nb_frames= total_sample_count;
01638 if (duration)
01639 st->duration= duration;
01640 return 0;
01641 }
01642
01643 static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
01644 {
01645 AVStream *st;
01646 MOVStreamContext *sc;
01647 unsigned int i, entries;
01648
01649 if (c->fc->nb_streams < 1)
01650 return 0;
01651 st = c->fc->streams[c->fc->nb_streams-1];
01652 sc = st->priv_data;
01653
01654 avio_r8(pb);
01655 avio_rb24(pb);
01656 entries = avio_rb32(pb);
01657
01658 av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
01659
01660 if (!entries)
01661 return 0;
01662 if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
01663 return AVERROR_INVALIDDATA;
01664 sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
01665 if (!sc->ctts_data)
01666 return AVERROR(ENOMEM);
01667 sc->ctts_count = entries;
01668
01669 for (i=0; i<entries; i++) {
01670 int count =avio_rb32(pb);
01671 int duration =avio_rb32(pb);
01672
01673 sc->ctts_data[i].count = count;
01674 sc->ctts_data[i].duration= duration;
01675 if (duration < 0)
01676 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
01677 }
01678
01679 av_dlog(c->fc, "dts shift %d\n", sc->dts_shift);
01680
01681 return 0;
01682 }
01683
01684 static void mov_build_index(MOVContext *mov, AVStream *st)
01685 {
01686 MOVStreamContext *sc = st->priv_data;
01687 int64_t current_offset;
01688 int64_t current_dts = 0;
01689 unsigned int stts_index = 0;
01690 unsigned int stsc_index = 0;
01691 unsigned int stss_index = 0;
01692 unsigned int stps_index = 0;
01693 unsigned int i, j;
01694 uint64_t stream_size = 0;
01695
01696
01697 if (sc->time_offset && mov->time_scale > 0) {
01698 if (sc->time_offset < 0)
01699 sc->time_offset = av_rescale(sc->time_offset, sc->time_scale, mov->time_scale);
01700 current_dts = -sc->time_offset;
01701 if (sc->ctts_data && sc->stts_data && sc->stts_data[0].duration &&
01702 sc->ctts_data[0].duration / sc->stts_data[0].duration > 16) {
01703
01704
01705 sc->wrong_dts = 1;
01706 st->codec->has_b_frames = 1;
01707 }
01708 }
01709
01710
01711 if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
01712 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
01713 unsigned int current_sample = 0;
01714 unsigned int stts_sample = 0;
01715 unsigned int sample_size;
01716 unsigned int distance = 0;
01717 int key_off = sc->keyframes && sc->keyframes[0] == 1;
01718
01719 current_dts -= sc->dts_shift;
01720
01721 if (!sc->sample_count)
01722 return;
01723 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries))
01724 return;
01725 st->index_entries = av_malloc(sc->sample_count*sizeof(*st->index_entries));
01726 if (!st->index_entries)
01727 return;
01728 st->index_entries_allocated_size = sc->sample_count*sizeof(*st->index_entries);
01729
01730 for (i = 0; i < sc->chunk_count; i++) {
01731 current_offset = sc->chunk_offsets[i];
01732 while (stsc_index + 1 < sc->stsc_count &&
01733 i + 1 == sc->stsc_data[stsc_index + 1].first)
01734 stsc_index++;
01735 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
01736 int keyframe = 0;
01737 if (current_sample >= sc->sample_count) {
01738 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
01739 return;
01740 }
01741
01742 if (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index]) {
01743 keyframe = 1;
01744 if (stss_index + 1 < sc->keyframe_count)
01745 stss_index++;
01746 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
01747 keyframe = 1;
01748 if (stps_index + 1 < sc->stps_count)
01749 stps_index++;
01750 }
01751 if (keyframe)
01752 distance = 0;
01753 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
01754 if (sc->pseudo_stream_id == -1 ||
01755 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
01756 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
01757 e->pos = current_offset;
01758 e->timestamp = current_dts;
01759 e->size = sample_size;
01760 e->min_distance = distance;
01761 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
01762 av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
01763 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
01764 current_offset, current_dts, sample_size, distance, keyframe);
01765 }
01766
01767 current_offset += sample_size;
01768 stream_size += sample_size;
01769 current_dts += sc->stts_data[stts_index].duration;
01770 distance++;
01771 stts_sample++;
01772 current_sample++;
01773 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
01774 stts_sample = 0;
01775 stts_index++;
01776 }
01777 }
01778 }
01779 if (st->duration > 0)
01780 st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
01781 } else {
01782 unsigned chunk_samples, total = 0;
01783
01784
01785 for (i = 0; i < sc->stsc_count; i++) {
01786 unsigned count, chunk_count;
01787
01788 chunk_samples = sc->stsc_data[i].count;
01789 if (sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
01790 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
01791 return;
01792 }
01793
01794 if (sc->samples_per_frame >= 160) {
01795 count = chunk_samples / sc->samples_per_frame;
01796 } else if (sc->samples_per_frame > 1) {
01797 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
01798 count = (chunk_samples+samples-1) / samples;
01799 } else {
01800 count = (chunk_samples+1023) / 1024;
01801 }
01802
01803 if (i < sc->stsc_count - 1)
01804 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
01805 else
01806 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
01807 total += chunk_count * count;
01808 }
01809
01810 av_dlog(mov->fc, "chunk count %d\n", total);
01811 if (total >= UINT_MAX / sizeof(*st->index_entries))
01812 return;
01813 st->index_entries = av_malloc(total*sizeof(*st->index_entries));
01814 if (!st->index_entries)
01815 return;
01816 st->index_entries_allocated_size = total*sizeof(*st->index_entries);
01817
01818
01819 for (i = 0; i < sc->chunk_count; i++) {
01820 current_offset = sc->chunk_offsets[i];
01821 if (stsc_index + 1 < sc->stsc_count &&
01822 i + 1 == sc->stsc_data[stsc_index + 1].first)
01823 stsc_index++;
01824 chunk_samples = sc->stsc_data[stsc_index].count;
01825
01826 while (chunk_samples > 0) {
01827 AVIndexEntry *e;
01828 unsigned size, samples;
01829
01830 if (sc->samples_per_frame >= 160) {
01831 samples = sc->samples_per_frame;
01832 size = sc->bytes_per_frame;
01833 } else {
01834 if (sc->samples_per_frame > 1) {
01835 samples = FFMIN((1024 / sc->samples_per_frame)*
01836 sc->samples_per_frame, chunk_samples);
01837 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
01838 } else {
01839 samples = FFMIN(1024, chunk_samples);
01840 size = samples * sc->sample_size;
01841 }
01842 }
01843
01844 if (st->nb_index_entries >= total) {
01845 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
01846 return;
01847 }
01848 e = &st->index_entries[st->nb_index_entries++];
01849 e->pos = current_offset;
01850 e->timestamp = current_dts;
01851 e->size = size;
01852 e->min_distance = 0;
01853 e->flags = AVINDEX_KEYFRAME;
01854 av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
01855 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
01856 size, samples);
01857
01858 current_offset += size;
01859 current_dts += samples;
01860 chunk_samples -= samples;
01861 }
01862 }
01863 }
01864 }
01865
01866 static int mov_open_dref(AVIOContext **pb, char *src, MOVDref *ref,
01867 AVIOInterruptCB *int_cb)
01868 {
01869
01870
01871 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
01872 char filename[1024];
01873 char *src_path;
01874 int i, l;
01875
01876
01877 src_path = strrchr(src, '/');
01878 if (src_path)
01879 src_path++;
01880 else
01881 src_path = src;
01882
01883
01884 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
01885 if (ref->path[l] == '/') {
01886 if (i == ref->nlvl_to - 1)
01887 break;
01888 else
01889 i++;
01890 }
01891
01892
01893 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
01894 memcpy(filename, src, src_path - src);
01895 filename[src_path - src] = 0;
01896
01897 for (i = 1; i < ref->nlvl_from; i++)
01898 av_strlcat(filename, "../", 1024);
01899
01900 av_strlcat(filename, ref->path + l + 1, 1024);
01901
01902 if (!avio_open2(pb, filename, AVIO_FLAG_READ, int_cb, NULL))
01903 return 0;
01904 }
01905 }
01906
01907 return AVERROR(ENOENT);
01908 }
01909
01910 static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
01911 {
01912 AVStream *st;
01913 MOVStreamContext *sc;
01914 int ret;
01915
01916 st = avformat_new_stream(c->fc, NULL);
01917 if (!st) return AVERROR(ENOMEM);
01918 st->id = c->fc->nb_streams;
01919 sc = av_mallocz(sizeof(MOVStreamContext));
01920 if (!sc) return AVERROR(ENOMEM);
01921
01922 st->priv_data = sc;
01923 st->codec->codec_type = AVMEDIA_TYPE_DATA;
01924 sc->ffindex = st->index;
01925
01926 if ((ret = mov_read_default(c, pb, atom)) < 0)
01927 return ret;
01928
01929
01930 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
01931 (!sc->sample_size && !sc->sample_count))) {
01932 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
01933 st->index);
01934 return 0;
01935 }
01936
01937 if (sc->time_scale <= 0) {
01938 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", st->index);
01939 sc->time_scale = c->time_scale;
01940 if (sc->time_scale <= 0)
01941 sc->time_scale = 1;
01942 }
01943
01944 avpriv_set_pts_info(st, 64, 1, sc->time_scale);
01945
01946 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
01947 !st->codec->frame_size && sc->stts_count == 1) {
01948 st->codec->frame_size = av_rescale(sc->stts_data[0].duration,
01949 st->codec->sample_rate, sc->time_scale);
01950 av_dlog(c->fc, "frame size %d\n", st->codec->frame_size);
01951 }
01952
01953 mov_build_index(c, st);
01954
01955 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
01956 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
01957 if (mov_open_dref(&sc->pb, c->fc->filename, dref, &c->fc->interrupt_callback) < 0)
01958 av_log(c->fc, AV_LOG_ERROR,
01959 "stream %d, error opening alias: path='%s', dir='%s', "
01960 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
01961 st->index, dref->path, dref->dir, dref->filename,
01962 dref->volume, dref->nlvl_from, dref->nlvl_to);
01963 } else
01964 sc->pb = c->fc->pb;
01965
01966 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
01967 if (!st->sample_aspect_ratio.num &&
01968 (st->codec->width != sc->width || st->codec->height != sc->height)) {
01969 st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
01970 ((double)st->codec->width * sc->height), INT_MAX);
01971 }
01972
01973 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
01974 sc->time_scale*st->nb_frames, st->duration, INT_MAX);
01975
01976 if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
01977 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
01978 sc->time_scale, sc->stts_data[0].duration, INT_MAX);
01979 }
01980
01981 switch (st->codec->codec_id) {
01982 #if CONFIG_H261_DECODER
01983 case CODEC_ID_H261:
01984 #endif
01985 #if CONFIG_H263_DECODER
01986 case CODEC_ID_H263:
01987 #endif
01988 #if CONFIG_H264_DECODER
01989 case CODEC_ID_H264:
01990 #endif
01991 #if CONFIG_MPEG4_DECODER
01992 case CODEC_ID_MPEG4:
01993 #endif
01994 st->codec->width = 0;
01995 st->codec->height= 0;
01996 break;
01997 }
01998
01999
02000 av_freep(&sc->chunk_offsets);
02001 av_freep(&sc->stsc_data);
02002 av_freep(&sc->sample_sizes);
02003 av_freep(&sc->keyframes);
02004 av_freep(&sc->stts_data);
02005 av_freep(&sc->stps_data);
02006
02007 return 0;
02008 }
02009
02010 static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
02011 {
02012 int ret;
02013 c->itunes_metadata = 1;
02014 ret = mov_read_default(c, pb, atom);
02015 c->itunes_metadata = 0;
02016 return ret;
02017 }
02018
02019 static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
02020 {
02021 while (atom.size > 8) {
02022 uint32_t tag = avio_rl32(pb);
02023 atom.size -= 4;
02024 if (tag == MKTAG('h','d','l','r')) {
02025 avio_seek(pb, -8, SEEK_CUR);
02026 atom.size += 8;
02027 return mov_read_default(c, pb, atom);
02028 }
02029 }
02030 return 0;
02031 }
02032
02033 static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
02034 {
02035 int i;
02036 int width;
02037 int height;
02038 int64_t disp_transform[2];
02039 int display_matrix[3][2];
02040 AVStream *st;
02041 MOVStreamContext *sc;
02042 int version;
02043
02044 if (c->fc->nb_streams < 1)
02045 return 0;
02046 st = c->fc->streams[c->fc->nb_streams-1];
02047 sc = st->priv_data;
02048
02049 version = avio_r8(pb);
02050 avio_rb24(pb);
02051
02052
02053
02054
02055
02056
02057
02058 if (version == 1) {
02059 avio_rb64(pb);
02060 avio_rb64(pb);
02061 } else {
02062 avio_rb32(pb);
02063 avio_rb32(pb);
02064 }
02065 st->id = (int)avio_rb32(pb);
02066 avio_rb32(pb);
02067
02068
02069 (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
02070 avio_rb32(pb);
02071 avio_rb32(pb);
02072
02073 avio_rb16(pb);
02074 avio_rb16(pb);
02075 avio_rb16(pb);
02076 avio_rb16(pb);
02077
02078
02079
02080
02081 for (i = 0; i < 3; i++) {
02082 display_matrix[i][0] = avio_rb32(pb);
02083 display_matrix[i][1] = avio_rb32(pb);
02084 avio_rb32(pb);
02085 }
02086
02087 width = avio_rb32(pb);
02088 height = avio_rb32(pb);
02089 sc->width = width >> 16;
02090 sc->height = height >> 16;
02091
02092
02093
02094
02095
02096 if (width && height &&
02097 ((display_matrix[0][0] != 65536 ||
02098 display_matrix[1][1] != 65536) &&
02099 !display_matrix[0][1] &&
02100 !display_matrix[1][0] &&
02101 !display_matrix[2][0] && !display_matrix[2][1])) {
02102 for (i = 0; i < 2; i++)
02103 disp_transform[i] =
02104 (int64_t) width * display_matrix[0][i] +
02105 (int64_t) height * display_matrix[1][i] +
02106 ((int64_t) display_matrix[2][i] << 16);
02107
02108
02109 st->sample_aspect_ratio = av_d2q(
02110 ((double) disp_transform[0] * height) /
02111 ((double) disp_transform[1] * width), INT_MAX);
02112 }
02113 return 0;
02114 }
02115
02116 static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
02117 {
02118 MOVFragment *frag = &c->fragment;
02119 MOVTrackExt *trex = NULL;
02120 int flags, track_id, i;
02121
02122 avio_r8(pb);
02123 flags = avio_rb24(pb);
02124
02125 track_id = avio_rb32(pb);
02126 if (!track_id)
02127 return AVERROR_INVALIDDATA;
02128 frag->track_id = track_id;
02129 for (i = 0; i < c->trex_count; i++)
02130 if (c->trex_data[i].track_id == frag->track_id) {
02131 trex = &c->trex_data[i];
02132 break;
02133 }
02134 if (!trex) {
02135 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
02136 return AVERROR_INVALIDDATA;
02137 }
02138
02139 if (flags & 0x01) frag->base_data_offset = avio_rb64(pb);
02140 else frag->base_data_offset = frag->moof_offset;
02141 if (flags & 0x02) frag->stsd_id = avio_rb32(pb);
02142 else frag->stsd_id = trex->stsd_id;
02143
02144 frag->duration = flags & 0x08 ? avio_rb32(pb) : trex->duration;
02145 frag->size = flags & 0x10 ? avio_rb32(pb) : trex->size;
02146 frag->flags = flags & 0x20 ? avio_rb32(pb) : trex->flags;
02147 av_dlog(c->fc, "frag flags 0x%x\n", frag->flags);
02148 return 0;
02149 }
02150
02151 static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
02152 {
02153 c->chapter_track = avio_rb32(pb);
02154 return 0;
02155 }
02156
02157 static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
02158 {
02159 MOVTrackExt *trex;
02160
02161 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
02162 return AVERROR_INVALIDDATA;
02163 trex = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data));
02164 if (!trex)
02165 return AVERROR(ENOMEM);
02166 c->trex_data = trex;
02167 trex = &c->trex_data[c->trex_count++];
02168 avio_r8(pb);
02169 avio_rb24(pb);
02170 trex->track_id = avio_rb32(pb);
02171 trex->stsd_id = avio_rb32(pb);
02172 trex->duration = avio_rb32(pb);
02173 trex->size = avio_rb32(pb);
02174 trex->flags = avio_rb32(pb);
02175 return 0;
02176 }
02177
02178 static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
02179 {
02180 MOVFragment *frag = &c->fragment;
02181 AVStream *st = NULL;
02182 MOVStreamContext *sc;
02183 MOVStts *ctts_data;
02184 uint64_t offset;
02185 int64_t dts;
02186 int data_offset = 0;
02187 unsigned entries, first_sample_flags = frag->flags;
02188 int flags, distance, i;
02189
02190 for (i = 0; i < c->fc->nb_streams; i++) {
02191 if (c->fc->streams[i]->id == frag->track_id) {
02192 st = c->fc->streams[i];
02193 break;
02194 }
02195 }
02196 if (!st) {
02197 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
02198 return AVERROR_INVALIDDATA;
02199 }
02200 sc = st->priv_data;
02201 if (sc->pseudo_stream_id+1 != frag->stsd_id)
02202 return 0;
02203 avio_r8(pb);
02204 flags = avio_rb24(pb);
02205 entries = avio_rb32(pb);
02206 av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries);
02207
02208
02209
02210
02211
02212
02213 if (!sc->ctts_count && sc->sample_count)
02214 {
02215
02216 ctts_data = av_malloc(sizeof(*sc->ctts_data));
02217 if (!ctts_data)
02218 return AVERROR(ENOMEM);
02219 sc->ctts_data = ctts_data;
02220 sc->ctts_data[sc->ctts_count].count = sc->sample_count;
02221 sc->ctts_data[sc->ctts_count].duration = 0;
02222 sc->ctts_count++;
02223 }
02224 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
02225 return AVERROR_INVALIDDATA;
02226 ctts_data = av_realloc(sc->ctts_data,
02227 (entries+sc->ctts_count)*sizeof(*sc->ctts_data));
02228 if (!ctts_data)
02229 return AVERROR(ENOMEM);
02230 sc->ctts_data = ctts_data;
02231
02232 if (flags & 0x001) data_offset = avio_rb32(pb);
02233 if (flags & 0x004) first_sample_flags = avio_rb32(pb);
02234 dts = st->duration - sc->time_offset;
02235 offset = frag->base_data_offset + data_offset;
02236 distance = 0;
02237 av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags);
02238 for (i = 0; i < entries; i++) {
02239 unsigned sample_size = frag->size;
02240 int sample_flags = i ? frag->flags : first_sample_flags;
02241 unsigned sample_duration = frag->duration;
02242 int keyframe;
02243
02244 if (flags & 0x100) sample_duration = avio_rb32(pb);
02245 if (flags & 0x200) sample_size = avio_rb32(pb);
02246 if (flags & 0x400) sample_flags = avio_rb32(pb);
02247 sc->ctts_data[sc->ctts_count].count = 1;
02248 sc->ctts_data[sc->ctts_count].duration = (flags & 0x800) ? avio_rb32(pb) : 0;
02249 sc->ctts_count++;
02250 if ((keyframe = st->codec->codec_type == AVMEDIA_TYPE_AUDIO ||
02251 (flags & 0x004 && !i && !sample_flags) || sample_flags & 0x2000000))
02252 distance = 0;
02253 av_add_index_entry(st, offset, dts, sample_size, distance,
02254 keyframe ? AVINDEX_KEYFRAME : 0);
02255 av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
02256 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
02257 offset, dts, sample_size, distance, keyframe);
02258 distance++;
02259 dts += sample_duration;
02260 offset += sample_size;
02261 }
02262 frag->moof_offset = offset;
02263 st->duration = dts + sc->time_offset;
02264 return 0;
02265 }
02266
02267
02268
02269
02270 static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
02271 {
02272 int err;
02273
02274 if (atom.size < 8)
02275 return 0;
02276 if (avio_rb32(pb) != 0) {
02277 avio_skip(pb, atom.size - 4);
02278 return 0;
02279 }
02280 atom.type = avio_rl32(pb);
02281 atom.size -= 8;
02282 if (atom.type != MKTAG('m','d','a','t')) {
02283 avio_skip(pb, atom.size);
02284 return 0;
02285 }
02286 err = mov_read_mdat(c, pb, atom);
02287 return err;
02288 }
02289
02290 static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
02291 {
02292 #if CONFIG_ZLIB
02293 AVIOContext ctx;
02294 uint8_t *cmov_data;
02295 uint8_t *moov_data;
02296 long cmov_len, moov_len;
02297 int ret = -1;
02298
02299 avio_rb32(pb);
02300 if (avio_rl32(pb) != MKTAG('d','c','o','m'))
02301 return AVERROR_INVALIDDATA;
02302 if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
02303 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !");
02304 return AVERROR_INVALIDDATA;
02305 }
02306 avio_rb32(pb);
02307 if (avio_rl32(pb) != MKTAG('c','m','v','d'))
02308 return AVERROR_INVALIDDATA;
02309 moov_len = avio_rb32(pb);
02310 cmov_len = atom.size - 6 * 4;
02311
02312 cmov_data = av_malloc(cmov_len);
02313 if (!cmov_data)
02314 return AVERROR(ENOMEM);
02315 moov_data = av_malloc(moov_len);
02316 if (!moov_data) {
02317 av_free(cmov_data);
02318 return AVERROR(ENOMEM);
02319 }
02320 avio_read(pb, cmov_data, cmov_len);
02321 if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
02322 goto free_and_return;
02323 if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
02324 goto free_and_return;
02325 atom.type = MKTAG('m','o','o','v');
02326 atom.size = moov_len;
02327 ret = mov_read_default(c, &ctx, atom);
02328 free_and_return:
02329 av_free(moov_data);
02330 av_free(cmov_data);
02331 return ret;
02332 #else
02333 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
02334 return AVERROR(ENOSYS);
02335 #endif
02336 }
02337
02338
02339 static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
02340 {
02341 MOVStreamContext *sc;
02342 int i, edit_count, version;
02343
02344 if (c->fc->nb_streams < 1)
02345 return 0;
02346 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
02347
02348 version = avio_r8(pb);
02349 avio_rb24(pb);
02350 edit_count = avio_rb32(pb);
02351
02352 if ((uint64_t)edit_count*12+8 > atom.size)
02353 return AVERROR_INVALIDDATA;
02354
02355 for (i=0; i<edit_count; i++){
02356 int64_t time;
02357 int64_t duration;
02358 if (version == 1) {
02359 duration = avio_rb64(pb);
02360 time = avio_rb64(pb);
02361 } else {
02362 duration = avio_rb32(pb);
02363 time = (int32_t)avio_rb32(pb);
02364 }
02365 avio_rb32(pb);
02366 if (i == 0 && time >= -1) {
02367 sc->time_offset = time != -1 ? time : -duration;
02368 }
02369 }
02370
02371 if (edit_count > 1)
02372 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
02373 "a/v desync might occur, patch welcome\n");
02374
02375 av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
02376 return 0;
02377 }
02378
02379 static const MOVParseTableEntry mov_default_parse_table[] = {
02380 { MKTAG('a','v','s','s'), mov_read_extradata },
02381 { MKTAG('c','h','p','l'), mov_read_chpl },
02382 { MKTAG('c','o','6','4'), mov_read_stco },
02383 { MKTAG('c','t','t','s'), mov_read_ctts },
02384 { MKTAG('d','i','n','f'), mov_read_default },
02385 { MKTAG('d','r','e','f'), mov_read_dref },
02386 { MKTAG('e','d','t','s'), mov_read_default },
02387 { MKTAG('e','l','s','t'), mov_read_elst },
02388 { MKTAG('e','n','d','a'), mov_read_enda },
02389 { MKTAG('f','i','e','l'), mov_read_fiel },
02390 { MKTAG('f','t','y','p'), mov_read_ftyp },
02391 { MKTAG('g','l','b','l'), mov_read_glbl },
02392 { MKTAG('h','d','l','r'), mov_read_hdlr },
02393 { MKTAG('i','l','s','t'), mov_read_ilst },
02394 { MKTAG('j','p','2','h'), mov_read_extradata },
02395 { MKTAG('m','d','a','t'), mov_read_mdat },
02396 { MKTAG('m','d','h','d'), mov_read_mdhd },
02397 { MKTAG('m','d','i','a'), mov_read_default },
02398 { MKTAG('m','e','t','a'), mov_read_meta },
02399 { MKTAG('m','i','n','f'), mov_read_default },
02400 { MKTAG('m','o','o','f'), mov_read_moof },
02401 { MKTAG('m','o','o','v'), mov_read_moov },
02402 { MKTAG('m','v','e','x'), mov_read_default },
02403 { MKTAG('m','v','h','d'), mov_read_mvhd },
02404 { MKTAG('S','M','I',' '), mov_read_smi },
02405 { MKTAG('a','l','a','c'), mov_read_extradata },
02406 { MKTAG('a','v','c','C'), mov_read_glbl },
02407 { MKTAG('p','a','s','p'), mov_read_pasp },
02408 { MKTAG('s','t','b','l'), mov_read_default },
02409 { MKTAG('s','t','c','o'), mov_read_stco },
02410 { MKTAG('s','t','p','s'), mov_read_stps },
02411 { MKTAG('s','t','r','f'), mov_read_strf },
02412 { MKTAG('s','t','s','c'), mov_read_stsc },
02413 { MKTAG('s','t','s','d'), mov_read_stsd },
02414 { MKTAG('s','t','s','s'), mov_read_stss },
02415 { MKTAG('s','t','s','z'), mov_read_stsz },
02416 { MKTAG('s','t','t','s'), mov_read_stts },
02417 { MKTAG('s','t','z','2'), mov_read_stsz },
02418 { MKTAG('t','k','h','d'), mov_read_tkhd },
02419 { MKTAG('t','f','h','d'), mov_read_tfhd },
02420 { MKTAG('t','r','a','k'), mov_read_trak },
02421 { MKTAG('t','r','a','f'), mov_read_default },
02422 { MKTAG('t','r','e','f'), mov_read_default },
02423 { MKTAG('c','h','a','p'), mov_read_chap },
02424 { MKTAG('t','r','e','x'), mov_read_trex },
02425 { MKTAG('t','r','u','n'), mov_read_trun },
02426 { MKTAG('u','d','t','a'), mov_read_default },
02427 { MKTAG('w','a','v','e'), mov_read_wave },
02428 { MKTAG('e','s','d','s'), mov_read_esds },
02429 { MKTAG('d','a','c','3'), mov_read_dac3 },
02430 { MKTAG('w','i','d','e'), mov_read_wide },
02431 { MKTAG('w','f','e','x'), mov_read_wfex },
02432 { MKTAG('c','m','o','v'), mov_read_cmov },
02433 { MKTAG('c','h','a','n'), mov_read_chan },
02434 { 0, NULL }
02435 };
02436
02437 static int mov_probe(AVProbeData *p)
02438 {
02439 unsigned int offset;
02440 uint32_t tag;
02441 int score = 0;
02442
02443
02444 offset = 0;
02445 for (;;) {
02446
02447 if ((offset + 8) > (unsigned int)p->buf_size)
02448 return score;
02449 tag = AV_RL32(p->buf + offset + 4);
02450 switch(tag) {
02451
02452 case MKTAG('j','P',' ',' '):
02453 case MKTAG('m','o','o','v'):
02454 case MKTAG('m','d','a','t'):
02455 case MKTAG('p','n','o','t'):
02456 case MKTAG('u','d','t','a'):
02457 case MKTAG('f','t','y','p'):
02458 return AVPROBE_SCORE_MAX;
02459
02460 case MKTAG('e','d','i','w'):
02461 case MKTAG('w','i','d','e'):
02462 case MKTAG('f','r','e','e'):
02463 case MKTAG('j','u','n','k'):
02464 case MKTAG('p','i','c','t'):
02465 return AVPROBE_SCORE_MAX - 5;
02466 case MKTAG(0x82,0x82,0x7f,0x7d):
02467 case MKTAG('s','k','i','p'):
02468 case MKTAG('u','u','i','d'):
02469 case MKTAG('p','r','f','l'):
02470 offset = AV_RB32(p->buf+offset) + offset;
02471
02472 score = AVPROBE_SCORE_MAX - 50;
02473 break;
02474 default:
02475
02476 return score;
02477 }
02478 }
02479 }
02480
02481
02482 static void mov_read_chapters(AVFormatContext *s)
02483 {
02484 MOVContext *mov = s->priv_data;
02485 AVStream *st = NULL;
02486 MOVStreamContext *sc;
02487 int64_t cur_pos;
02488 int i;
02489
02490 for (i = 0; i < s->nb_streams; i++)
02491 if (s->streams[i]->id == mov->chapter_track) {
02492 st = s->streams[i];
02493 break;
02494 }
02495 if (!st) {
02496 av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
02497 return;
02498 }
02499
02500 st->discard = AVDISCARD_ALL;
02501 sc = st->priv_data;
02502 cur_pos = avio_tell(sc->pb);
02503
02504 for (i = 0; i < st->nb_index_entries; i++) {
02505 AVIndexEntry *sample = &st->index_entries[i];
02506 int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
02507 uint8_t *title;
02508 uint16_t ch;
02509 int len, title_len;
02510
02511 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
02512 av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
02513 goto finish;
02514 }
02515
02516
02517 len = avio_rb16(sc->pb);
02518 if (len > sample->size-2)
02519 continue;
02520 title_len = 2*len + 1;
02521 if (!(title = av_mallocz(title_len)))
02522 goto finish;
02523
02524
02525
02526
02527 if (!len) {
02528 title[0] = 0;
02529 } else {
02530 ch = avio_rb16(sc->pb);
02531 if (ch == 0xfeff)
02532 avio_get_str16be(sc->pb, len, title, title_len);
02533 else if (ch == 0xfffe)
02534 avio_get_str16le(sc->pb, len, title, title_len);
02535 else {
02536 AV_WB16(title, ch);
02537 if (len == 1 || len == 2)
02538 title[len] = 0;
02539 else
02540 avio_get_str(sc->pb, len - 2, title + 2, title_len - 2);
02541 }
02542 }
02543
02544 avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
02545 av_freep(&title);
02546 }
02547 finish:
02548 avio_seek(sc->pb, cur_pos, SEEK_SET);
02549 }
02550
02551 static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
02552 {
02553 MOVContext *mov = s->priv_data;
02554 AVIOContext *pb = s->pb;
02555 int err;
02556 MOVAtom atom = { AV_RL32("root") };
02557
02558 mov->fc = s;
02559
02560 if (pb->seekable)
02561 atom.size = avio_size(pb);
02562 else
02563 atom.size = INT64_MAX;
02564
02565
02566 if ((err = mov_read_default(mov, pb, atom)) < 0) {
02567 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
02568 return err;
02569 }
02570 if (!mov->found_moov) {
02571 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
02572 return AVERROR_INVALIDDATA;
02573 }
02574 av_dlog(mov->fc, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
02575
02576 if (pb->seekable && mov->chapter_track > 0)
02577 mov_read_chapters(s);
02578
02579 return 0;
02580 }
02581
02582 static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
02583 {
02584 AVIndexEntry *sample = NULL;
02585 int64_t best_dts = INT64_MAX;
02586 int i;
02587 for (i = 0; i < s->nb_streams; i++) {
02588 AVStream *avst = s->streams[i];
02589 MOVStreamContext *msc = avst->priv_data;
02590 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
02591 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
02592 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
02593 av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
02594 if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
02595 (s->pb->seekable &&
02596 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
02597 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
02598 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
02599 sample = current_sample;
02600 best_dts = dts;
02601 *st = avst;
02602 }
02603 }
02604 }
02605 return sample;
02606 }
02607
02608 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
02609 {
02610 MOVContext *mov = s->priv_data;
02611 MOVStreamContext *sc;
02612 AVIndexEntry *sample;
02613 AVStream *st = NULL;
02614 int ret;
02615 retry:
02616 sample = mov_find_next_sample(s, &st);
02617 if (!sample) {
02618 mov->found_mdat = 0;
02619 if (s->pb->seekable||
02620 mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
02621 s->pb->eof_reached)
02622 return AVERROR_EOF;
02623 av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
02624 goto retry;
02625 }
02626 sc = st->priv_data;
02627
02628 sc->current_sample++;
02629
02630 if (st->discard != AVDISCARD_ALL) {
02631 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
02632 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
02633 sc->ffindex, sample->pos);
02634 return AVERROR_INVALIDDATA;
02635 }
02636 ret = av_get_packet(sc->pb, pkt, sample->size);
02637 if (ret < 0)
02638 return ret;
02639 if (sc->has_palette) {
02640 uint8_t *pal;
02641
02642 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
02643 if (!pal) {
02644 av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
02645 } else {
02646 memcpy(pal, sc->palette, AVPALETTE_SIZE);
02647 sc->has_palette = 0;
02648 }
02649 }
02650 #if CONFIG_DV_DEMUXER
02651 if (mov->dv_demux && sc->dv_audio_container) {
02652 avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
02653 av_free(pkt->data);
02654 pkt->size = 0;
02655 ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
02656 if (ret < 0)
02657 return ret;
02658 }
02659 #endif
02660 }
02661
02662 pkt->stream_index = sc->ffindex;
02663 pkt->dts = sample->timestamp;
02664 if (sc->ctts_data) {
02665 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
02666
02667 sc->ctts_sample++;
02668 if (sc->ctts_index < sc->ctts_count &&
02669 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
02670 sc->ctts_index++;
02671 sc->ctts_sample = 0;
02672 }
02673 if (sc->wrong_dts)
02674 pkt->dts = AV_NOPTS_VALUE;
02675 } else {
02676 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
02677 st->index_entries[sc->current_sample].timestamp : st->duration;
02678 pkt->duration = next_dts - pkt->dts;
02679 pkt->pts = pkt->dts;
02680 }
02681 if (st->discard == AVDISCARD_ALL)
02682 goto retry;
02683 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
02684 pkt->pos = sample->pos;
02685 av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
02686 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
02687 return 0;
02688 }
02689
02690 static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
02691 {
02692 MOVStreamContext *sc = st->priv_data;
02693 int sample, time_sample;
02694 int i;
02695
02696 sample = av_index_search_timestamp(st, timestamp, flags);
02697 av_dlog(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
02698 if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
02699 sample = 0;
02700 if (sample < 0)
02701 return AVERROR_INVALIDDATA;
02702 sc->current_sample = sample;
02703 av_dlog(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
02704
02705 if (sc->ctts_data) {
02706 time_sample = 0;
02707 for (i = 0; i < sc->ctts_count; i++) {
02708 int next = time_sample + sc->ctts_data[i].count;
02709 if (next > sc->current_sample) {
02710 sc->ctts_index = i;
02711 sc->ctts_sample = sc->current_sample - time_sample;
02712 break;
02713 }
02714 time_sample = next;
02715 }
02716 }
02717 return sample;
02718 }
02719
02720 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
02721 {
02722 AVStream *st;
02723 int64_t seek_timestamp, timestamp;
02724 int sample;
02725 int i;
02726
02727 if (stream_index >= s->nb_streams)
02728 return AVERROR_INVALIDDATA;
02729 if (sample_time < 0)
02730 sample_time = 0;
02731
02732 st = s->streams[stream_index];
02733 sample = mov_seek_stream(s, st, sample_time, flags);
02734 if (sample < 0)
02735 return sample;
02736
02737
02738 seek_timestamp = st->index_entries[sample].timestamp;
02739
02740 for (i = 0; i < s->nb_streams; i++) {
02741 st = s->streams[i];
02742 if (stream_index == i)
02743 continue;
02744
02745 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
02746 mov_seek_stream(s, st, timestamp, flags);
02747 }
02748 return 0;
02749 }
02750
02751 static int mov_read_close(AVFormatContext *s)
02752 {
02753 MOVContext *mov = s->priv_data;
02754 int i, j;
02755
02756 for (i = 0; i < s->nb_streams; i++) {
02757 AVStream *st = s->streams[i];
02758 MOVStreamContext *sc = st->priv_data;
02759
02760 av_freep(&sc->ctts_data);
02761 for (j = 0; j < sc->drefs_count; j++) {
02762 av_freep(&sc->drefs[j].path);
02763 av_freep(&sc->drefs[j].dir);
02764 }
02765 av_freep(&sc->drefs);
02766 if (sc->pb && sc->pb != s->pb)
02767 avio_close(sc->pb);
02768 }
02769
02770 if (mov->dv_demux) {
02771 for (i = 0; i < mov->dv_fctx->nb_streams; i++) {
02772 av_freep(&mov->dv_fctx->streams[i]->codec);
02773 av_freep(&mov->dv_fctx->streams[i]);
02774 }
02775 av_freep(&mov->dv_fctx);
02776 av_freep(&mov->dv_demux);
02777 }
02778
02779 av_freep(&mov->trex_data);
02780
02781 return 0;
02782 }
02783
02784 AVInputFormat ff_mov_demuxer = {
02785 .name = "mov,mp4,m4a,3gp,3g2,mj2",
02786 .long_name = NULL_IF_CONFIG_SMALL("QuickTime/MPEG-4/Motion JPEG 2000 format"),
02787 .priv_data_size = sizeof(MOVContext),
02788 .read_probe = mov_probe,
02789 .read_header = mov_read_header,
02790 .read_packet = mov_read_packet,
02791 .read_close = mov_read_close,
02792 .read_seek = mov_read_seek,
02793 };