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00023 #include <limits.h>
00024
00025
00026
00027
00028 #include "libavutil/audioconvert.h"
00029 #include "libavutil/intreadwrite.h"
00030 #include "libavutil/intfloat.h"
00031 #include "libavutil/mathematics.h"
00032 #include "libavutil/avstring.h"
00033 #include "libavutil/dict.h"
00034 #include "libavcodec/ac3tab.h"
00035 #include "avformat.h"
00036 #include "internal.h"
00037 #include "avio_internal.h"
00038 #include "riff.h"
00039 #include "isom.h"
00040 #include "libavcodec/get_bits.h"
00041 #include "id3v1.h"
00042 #include "mov_chan.h"
00043
00044 #if CONFIG_ZLIB
00045 #include <zlib.h>
00046 #endif
00047
00048
00049
00050
00051
00052
00053 #include "qtpalette.h"
00054
00055
00056 #undef NDEBUG
00057 #include <assert.h>
00058
00059
00060
00061 typedef struct MOVParseTableEntry {
00062 uint32_t type;
00063 int (*parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom);
00064 } MOVParseTableEntry;
00065
00066 static const MOVParseTableEntry mov_default_parse_table[];
00067
00068 static int mov_metadata_track_or_disc_number(MOVContext *c, AVIOContext *pb,
00069 unsigned len, const char *key)
00070 {
00071 char buf[16];
00072
00073 short current, total;
00074 avio_rb16(pb);
00075 current = avio_rb16(pb);
00076 total = avio_rb16(pb);
00077 if (!total)
00078 snprintf(buf, sizeof(buf), "%d", current);
00079 else
00080 snprintf(buf, sizeof(buf), "%d/%d", current, total);
00081 av_dict_set(&c->fc->metadata, key, buf, 0);
00082
00083 return 0;
00084 }
00085
00086 static int mov_metadata_int8_bypass_padding(MOVContext *c, AVIOContext *pb,
00087 unsigned len, const char *key)
00088 {
00089 char buf[16];
00090
00091
00092 avio_r8(pb);
00093 avio_r8(pb);
00094 avio_r8(pb);
00095
00096 snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
00097 av_dict_set(&c->fc->metadata, key, buf, 0);
00098
00099 return 0;
00100 }
00101
00102 static int mov_metadata_int8_no_padding(MOVContext *c, AVIOContext *pb,
00103 unsigned len, const char *key)
00104 {
00105 char buf[16];
00106
00107 snprintf(buf, sizeof(buf), "%d", avio_r8(pb));
00108 av_dict_set(&c->fc->metadata, key, buf, 0);
00109
00110 return 0;
00111 }
00112
00113 static int mov_metadata_gnre(MOVContext *c, AVIOContext *pb,
00114 unsigned len, const char *key)
00115 {
00116 short genre;
00117 char buf[20];
00118
00119 avio_r8(pb);
00120
00121 genre = avio_r8(pb);
00122 if (genre < 1 || genre > ID3v1_GENRE_MAX)
00123 return 0;
00124 snprintf(buf, sizeof(buf), "%s", ff_id3v1_genre_str[genre-1]);
00125 av_dict_set(&c->fc->metadata, key, buf, 0);
00126
00127 return 0;
00128 }
00129
00130 static const uint32_t mac_to_unicode[128] = {
00131 0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1,
00132 0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8,
00133 0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3,
00134 0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC,
00135 0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF,
00136 0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8,
00137 0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211,
00138 0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8,
00139 0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB,
00140 0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153,
00141 0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA,
00142 0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02,
00143 0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1,
00144 0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4,
00145 0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC,
00146 0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7,
00147 };
00148
00149 static int mov_read_mac_string(MOVContext *c, AVIOContext *pb, int len,
00150 char *dst, int dstlen)
00151 {
00152 char *p = dst;
00153 char *end = dst+dstlen-1;
00154 int i;
00155
00156 for (i = 0; i < len; i++) {
00157 uint8_t t, c = avio_r8(pb);
00158 if (c < 0x80 && p < end)
00159 *p++ = c;
00160 else
00161 PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;);
00162 }
00163 *p = 0;
00164 return p - dst;
00165 }
00166
00167 static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00168 {
00169 #ifdef MOV_EXPORT_ALL_METADATA
00170 char tmp_key[5];
00171 #endif
00172 char str[1024], key2[16], language[4] = {0};
00173 const char *key = NULL;
00174 uint16_t str_size, langcode = 0;
00175 uint32_t data_type = 0;
00176 int (*parse)(MOVContext*, AVIOContext*, unsigned, const char*) = NULL;
00177
00178 switch (atom.type) {
00179 case MKTAG(0xa9,'n','a','m'): key = "title"; break;
00180 case MKTAG(0xa9,'a','u','t'):
00181 case MKTAG(0xa9,'A','R','T'): key = "artist"; break;
00182 case MKTAG( 'a','A','R','T'): key = "album_artist"; break;
00183 case MKTAG(0xa9,'w','r','t'): key = "composer"; break;
00184 case MKTAG( 'c','p','r','t'):
00185 case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
00186 case MKTAG(0xa9,'c','m','t'):
00187 case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
00188 case MKTAG(0xa9,'a','l','b'): key = "album"; break;
00189 case MKTAG(0xa9,'d','a','y'): key = "date"; break;
00190 case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
00191 case MKTAG( 'g','n','r','e'): key = "genre";
00192 parse = mov_metadata_gnre; break;
00193 case MKTAG(0xa9,'t','o','o'):
00194 case MKTAG(0xa9,'s','w','r'): key = "encoder"; break;
00195 case MKTAG(0xa9,'e','n','c'): key = "encoder"; break;
00196 case MKTAG( 'd','e','s','c'): key = "description";break;
00197 case MKTAG( 'l','d','e','s'): key = "synopsis"; break;
00198 case MKTAG( 't','v','s','h'): key = "show"; break;
00199 case MKTAG( 't','v','e','n'): key = "episode_id";break;
00200 case MKTAG( 't','v','n','n'): key = "network"; break;
00201 case MKTAG( 't','r','k','n'): key = "track";
00202 parse = mov_metadata_track_or_disc_number; break;
00203 case MKTAG( 'd','i','s','k'): key = "disc";
00204 parse = mov_metadata_track_or_disc_number; break;
00205 case MKTAG( 't','v','e','s'): key = "episode_sort";
00206 parse = mov_metadata_int8_bypass_padding; break;
00207 case MKTAG( 't','v','s','n'): key = "season_number";
00208 parse = mov_metadata_int8_bypass_padding; break;
00209 case MKTAG( 's','t','i','k'): key = "media_type";
00210 parse = mov_metadata_int8_no_padding; break;
00211 case MKTAG( 'h','d','v','d'): key = "hd_video";
00212 parse = mov_metadata_int8_no_padding; break;
00213 case MKTAG( 'p','g','a','p'): key = "gapless_playback";
00214 parse = mov_metadata_int8_no_padding; break;
00215 }
00216
00217 if (c->itunes_metadata && atom.size > 8) {
00218 int data_size = avio_rb32(pb);
00219 int tag = avio_rl32(pb);
00220 if (tag == MKTAG('d','a','t','a')) {
00221 data_type = avio_rb32(pb);
00222 avio_rb32(pb);
00223 str_size = data_size - 16;
00224 atom.size -= 16;
00225 } else return 0;
00226 } else if (atom.size > 4 && key && !c->itunes_metadata) {
00227 str_size = avio_rb16(pb);
00228 langcode = avio_rb16(pb);
00229 ff_mov_lang_to_iso639(langcode, language);
00230 atom.size -= 4;
00231 } else
00232 str_size = atom.size;
00233
00234 #ifdef MOV_EXPORT_ALL_METADATA
00235 if (!key) {
00236 snprintf(tmp_key, 5, "%.4s", (char*)&atom.type);
00237 key = tmp_key;
00238 }
00239 #endif
00240
00241 if (!key)
00242 return 0;
00243 if (atom.size < 0)
00244 return AVERROR_INVALIDDATA;
00245
00246 str_size = FFMIN3(sizeof(str)-1, str_size, atom.size);
00247
00248 if (parse)
00249 parse(c, pb, str_size, key);
00250 else {
00251 if (data_type == 3 || (data_type == 0 && langcode < 0x800)) {
00252 mov_read_mac_string(c, pb, str_size, str, sizeof(str));
00253 } else {
00254 avio_read(pb, str, str_size);
00255 str[str_size] = 0;
00256 }
00257 av_dict_set(&c->fc->metadata, key, str, 0);
00258 if (*language && strcmp(language, "und")) {
00259 snprintf(key2, sizeof(key2), "%s-%s", key, language);
00260 av_dict_set(&c->fc->metadata, key2, str, 0);
00261 }
00262 }
00263 av_dlog(c->fc, "lang \"%3s\" ", language);
00264 av_dlog(c->fc, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n",
00265 key, str, (char*)&atom.type, str_size, atom.size);
00266
00267 return 0;
00268 }
00269
00270 static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00271 {
00272 int64_t start;
00273 int i, nb_chapters, str_len, version;
00274 char str[256+1];
00275
00276 if ((atom.size -= 5) < 0)
00277 return 0;
00278
00279 version = avio_r8(pb);
00280 avio_rb24(pb);
00281 if (version)
00282 avio_rb32(pb);
00283 nb_chapters = avio_r8(pb);
00284
00285 for (i = 0; i < nb_chapters; i++) {
00286 if (atom.size < 9)
00287 return 0;
00288
00289 start = avio_rb64(pb);
00290 str_len = avio_r8(pb);
00291
00292 if ((atom.size -= 9+str_len) < 0)
00293 return 0;
00294
00295 avio_read(pb, str, str_len);
00296 str[str_len] = 0;
00297 avpriv_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str);
00298 }
00299 return 0;
00300 }
00301
00302 static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00303 {
00304 int64_t total_size = 0;
00305 MOVAtom a;
00306 int i;
00307
00308 if (atom.size < 0)
00309 atom.size = INT64_MAX;
00310 while (total_size + 8 < atom.size && !pb->eof_reached) {
00311 int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
00312 a.size = atom.size;
00313 a.type=0;
00314 if (atom.size >= 8) {
00315 a.size = avio_rb32(pb);
00316 a.type = avio_rl32(pb);
00317 }
00318 av_dlog(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
00319 a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
00320 total_size += 8;
00321 if (a.size == 1) {
00322 a.size = avio_rb64(pb) - 8;
00323 total_size += 8;
00324 }
00325 if (a.size == 0) {
00326 a.size = atom.size - total_size;
00327 if (a.size <= 8)
00328 break;
00329 }
00330 a.size -= 8;
00331 if (a.size < 0)
00332 break;
00333 a.size = FFMIN(a.size, atom.size - total_size);
00334
00335 for (i = 0; mov_default_parse_table[i].type; i++)
00336 if (mov_default_parse_table[i].type == a.type) {
00337 parse = mov_default_parse_table[i].parse;
00338 break;
00339 }
00340
00341
00342 if (!parse && (atom.type == MKTAG('u','d','t','a') ||
00343 atom.type == MKTAG('i','l','s','t')))
00344 parse = mov_read_udta_string;
00345
00346 if (!parse) {
00347 avio_skip(pb, a.size);
00348 } else {
00349 int64_t start_pos = avio_tell(pb);
00350 int64_t left;
00351 int err = parse(c, pb, a);
00352 if (err < 0)
00353 return err;
00354 if (c->found_moov && c->found_mdat &&
00355 (!pb->seekable || start_pos + a.size == avio_size(pb)))
00356 return 0;
00357 left = a.size - avio_tell(pb) + start_pos;
00358 if (left > 0)
00359 avio_skip(pb, left);
00360 }
00361
00362 total_size += a.size;
00363 }
00364
00365 if (total_size < atom.size && atom.size < 0x7ffff)
00366 avio_skip(pb, atom.size - total_size);
00367
00368 return 0;
00369 }
00370
00371 static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00372 {
00373 AVStream *st;
00374 MOVStreamContext *sc;
00375 int entries, i, j;
00376
00377 if (c->fc->nb_streams < 1)
00378 return 0;
00379 st = c->fc->streams[c->fc->nb_streams-1];
00380 sc = st->priv_data;
00381
00382 avio_rb32(pb);
00383 entries = avio_rb32(pb);
00384 if (entries >= UINT_MAX / sizeof(*sc->drefs))
00385 return AVERROR_INVALIDDATA;
00386 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
00387 if (!sc->drefs)
00388 return AVERROR(ENOMEM);
00389 sc->drefs_count = entries;
00390
00391 for (i = 0; i < sc->drefs_count; i++) {
00392 MOVDref *dref = &sc->drefs[i];
00393 uint32_t size = avio_rb32(pb);
00394 int64_t next = avio_tell(pb) + size - 4;
00395
00396 if (size < 12)
00397 return AVERROR_INVALIDDATA;
00398
00399 dref->type = avio_rl32(pb);
00400 avio_rb32(pb);
00401 av_dlog(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
00402
00403 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
00404
00405 uint16_t volume_len, len;
00406 int16_t type;
00407
00408 avio_skip(pb, 10);
00409
00410 volume_len = avio_r8(pb);
00411 volume_len = FFMIN(volume_len, 27);
00412 avio_read(pb, dref->volume, 27);
00413 dref->volume[volume_len] = 0;
00414 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len);
00415
00416 avio_skip(pb, 12);
00417
00418 len = avio_r8(pb);
00419 len = FFMIN(len, 63);
00420 avio_read(pb, dref->filename, 63);
00421 dref->filename[len] = 0;
00422 av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len);
00423
00424 avio_skip(pb, 16);
00425
00426
00427 dref->nlvl_from = avio_rb16(pb);
00428 dref->nlvl_to = avio_rb16(pb);
00429 av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n",
00430 dref->nlvl_from, dref->nlvl_to);
00431
00432 avio_skip(pb, 16);
00433
00434 for (type = 0; type != -1 && avio_tell(pb) < next; ) {
00435 type = avio_rb16(pb);
00436 len = avio_rb16(pb);
00437 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
00438 if (len&1)
00439 len += 1;
00440 if (type == 2) {
00441 av_free(dref->path);
00442 dref->path = av_mallocz(len+1);
00443 if (!dref->path)
00444 return AVERROR(ENOMEM);
00445 avio_read(pb, dref->path, len);
00446 if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) {
00447 len -= volume_len;
00448 memmove(dref->path, dref->path+volume_len, len);
00449 dref->path[len] = 0;
00450 }
00451 for (j = 0; j < len; j++)
00452 if (dref->path[j] == ':')
00453 dref->path[j] = '/';
00454 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
00455 } else if (type == 0) {
00456 av_free(dref->dir);
00457 dref->dir = av_malloc(len+1);
00458 if (!dref->dir)
00459 return AVERROR(ENOMEM);
00460 avio_read(pb, dref->dir, len);
00461 dref->dir[len] = 0;
00462 for (j = 0; j < len; j++)
00463 if (dref->dir[j] == ':')
00464 dref->dir[j] = '/';
00465 av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir);
00466 } else
00467 avio_skip(pb, len);
00468 }
00469 }
00470 avio_seek(pb, next, SEEK_SET);
00471 }
00472 return 0;
00473 }
00474
00475 static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00476 {
00477 AVStream *st;
00478 uint32_t type;
00479 uint32_t av_unused ctype;
00480
00481 if (c->fc->nb_streams < 1)
00482 return 0;
00483
00484 st = c->fc->streams[c->fc->nb_streams-1];
00485
00486 avio_r8(pb);
00487 avio_rb24(pb);
00488
00489
00490 ctype = avio_rl32(pb);
00491 type = avio_rl32(pb);
00492
00493 av_dlog(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype);
00494 av_dlog(c->fc, "stype= %.4s\n", (char*)&type);
00495
00496 if (type == MKTAG('v','i','d','e'))
00497 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
00498 else if (type == MKTAG('s','o','u','n'))
00499 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
00500 else if (type == MKTAG('m','1','a',' '))
00501 st->codec->codec_id = CODEC_ID_MP2;
00502 else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p')))
00503 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
00504
00505 avio_rb32(pb);
00506 avio_rb32(pb);
00507 avio_rb32(pb);
00508
00509 return 0;
00510 }
00511
00512 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb, MOVAtom atom)
00513 {
00514 AVStream *st;
00515 int tag;
00516
00517 if (fc->nb_streams < 1)
00518 return 0;
00519 st = fc->streams[fc->nb_streams-1];
00520
00521 avio_rb32(pb);
00522 ff_mp4_read_descr(fc, pb, &tag);
00523 if (tag == MP4ESDescrTag) {
00524 ff_mp4_parse_es_descr(pb, NULL);
00525 } else
00526 avio_rb16(pb);
00527
00528 ff_mp4_read_descr(fc, pb, &tag);
00529 if (tag == MP4DecConfigDescrTag)
00530 ff_mp4_read_dec_config_descr(fc, st, pb);
00531 return 0;
00532 }
00533
00534 static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00535 {
00536 return ff_mov_read_esds(c->fc, pb, atom);
00537 }
00538
00539 static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00540 {
00541 AVStream *st;
00542 int ac3info, acmod, lfeon, bsmod;
00543
00544 if (c->fc->nb_streams < 1)
00545 return 0;
00546 st = c->fc->streams[c->fc->nb_streams-1];
00547
00548 ac3info = avio_rb24(pb);
00549 bsmod = (ac3info >> 14) & 0x7;
00550 acmod = (ac3info >> 11) & 0x7;
00551 lfeon = (ac3info >> 10) & 0x1;
00552 st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
00553 st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod];
00554 if (lfeon)
00555 st->codec->channel_layout |= AV_CH_LOW_FREQUENCY;
00556 st->codec->audio_service_type = bsmod;
00557 if (st->codec->channels > 1 && bsmod == 0x7)
00558 st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
00559
00560 return 0;
00561 }
00562
00563 static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00564 {
00565 AVStream *st;
00566 uint8_t version;
00567 uint32_t flags, layout_tag, bitmap, num_descr, label_mask;
00568 int i;
00569
00570 if (c->fc->nb_streams < 1)
00571 return 0;
00572 st = c->fc->streams[c->fc->nb_streams-1];
00573
00574 if (atom.size < 16)
00575 return 0;
00576
00577 version = avio_r8(pb);
00578 flags = avio_rb24(pb);
00579
00580 layout_tag = avio_rb32(pb);
00581 bitmap = avio_rb32(pb);
00582 num_descr = avio_rb32(pb);
00583
00584 if (atom.size < 16ULL + num_descr * 20ULL)
00585 return 0;
00586
00587 av_dlog(c->fc, "chan: size=%ld version=%u flags=%u layout=%u bitmap=%u num_descr=%u\n",
00588 atom.size, version, flags, layout_tag, bitmap, num_descr);
00589
00590 label_mask = 0;
00591 for (i = 0; i < num_descr; i++) {
00592 uint32_t label, cflags;
00593 label = avio_rb32(pb);
00594 cflags = avio_rb32(pb);
00595 avio_rl32(pb);
00596 avio_rl32(pb);
00597 avio_rl32(pb);
00598 if (layout_tag == 0) {
00599 uint32_t mask_incr = ff_mov_get_channel_label(label);
00600 if (mask_incr == 0) {
00601 label_mask = 0;
00602 break;
00603 }
00604 label_mask |= mask_incr;
00605 }
00606 }
00607 if (layout_tag == 0)
00608 st->codec->channel_layout = label_mask;
00609 else
00610 st->codec->channel_layout = ff_mov_get_channel_layout(layout_tag, bitmap);
00611
00612 return 0;
00613 }
00614
00615 static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00616 {
00617 AVStream *st;
00618
00619 if (c->fc->nb_streams < 1)
00620 return 0;
00621 st = c->fc->streams[c->fc->nb_streams-1];
00622
00623 ff_get_wav_header(pb, st->codec, atom.size);
00624
00625 return 0;
00626 }
00627
00628 static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00629 {
00630 const int num = avio_rb32(pb);
00631 const int den = avio_rb32(pb);
00632 AVStream *st;
00633
00634 if (c->fc->nb_streams < 1)
00635 return 0;
00636 st = c->fc->streams[c->fc->nb_streams-1];
00637
00638 if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) &&
00639 (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) {
00640 av_log(c->fc, AV_LOG_WARNING,
00641 "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n",
00642 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
00643 num, den);
00644 } else if (den != 0) {
00645 st->sample_aspect_ratio.num = num;
00646 st->sample_aspect_ratio.den = den;
00647 }
00648 return 0;
00649 }
00650
00651
00652 static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00653 {
00654 if (atom.size == 0)
00655 return 0;
00656 c->found_mdat=1;
00657 return 0;
00658 }
00659
00660
00661 static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00662 {
00663 uint32_t minor_ver;
00664 int comp_brand_size;
00665 char minor_ver_str[11];
00666 char* comp_brands_str;
00667 uint8_t type[5] = {0};
00668
00669 avio_read(pb, type, 4);
00670 if (strcmp(type, "qt "))
00671 c->isom = 1;
00672 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
00673 av_dict_set(&c->fc->metadata, "major_brand", type, 0);
00674 minor_ver = avio_rb32(pb);
00675 snprintf(minor_ver_str, sizeof(minor_ver_str), "%d", minor_ver);
00676 av_dict_set(&c->fc->metadata, "minor_version", minor_ver_str, 0);
00677
00678 comp_brand_size = atom.size - 8;
00679 if (comp_brand_size < 0)
00680 return AVERROR_INVALIDDATA;
00681 comp_brands_str = av_malloc(comp_brand_size + 1);
00682 if (!comp_brands_str)
00683 return AVERROR(ENOMEM);
00684 avio_read(pb, comp_brands_str, comp_brand_size);
00685 comp_brands_str[comp_brand_size] = 0;
00686 av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0);
00687 av_freep(&comp_brands_str);
00688
00689 return 0;
00690 }
00691
00692
00693 static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00694 {
00695 int ret;
00696
00697 if ((ret = mov_read_default(c, pb, atom)) < 0)
00698 return ret;
00699
00700
00701 c->found_moov=1;
00702 return 0;
00703 }
00704
00705 static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00706 {
00707 c->fragment.moof_offset = avio_tell(pb) - 8;
00708 av_dlog(c->fc, "moof offset %"PRIx64"\n", c->fragment.moof_offset);
00709 return mov_read_default(c, pb, atom);
00710 }
00711
00712 static void mov_metadata_creation_time(AVDictionary **metadata, time_t time)
00713 {
00714 char buffer[32];
00715 if (time) {
00716 struct tm *ptm;
00717 time -= 2082844800;
00718 ptm = gmtime(&time);
00719 if (!ptm) return;
00720 strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm);
00721 av_dict_set(metadata, "creation_time", buffer, 0);
00722 }
00723 }
00724
00725 static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00726 {
00727 AVStream *st;
00728 MOVStreamContext *sc;
00729 int version;
00730 char language[4] = {0};
00731 unsigned lang;
00732 time_t creation_time;
00733
00734 if (c->fc->nb_streams < 1)
00735 return 0;
00736 st = c->fc->streams[c->fc->nb_streams-1];
00737 sc = st->priv_data;
00738
00739 version = avio_r8(pb);
00740 if (version > 1) {
00741 av_log_ask_for_sample(c, "unsupported version %d\n", version);
00742 return AVERROR_PATCHWELCOME;
00743 }
00744 avio_rb24(pb);
00745 if (version == 1) {
00746 creation_time = avio_rb64(pb);
00747 avio_rb64(pb);
00748 } else {
00749 creation_time = avio_rb32(pb);
00750 avio_rb32(pb);
00751 }
00752 mov_metadata_creation_time(&st->metadata, creation_time);
00753
00754 sc->time_scale = avio_rb32(pb);
00755 st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
00756
00757 lang = avio_rb16(pb);
00758 if (ff_mov_lang_to_iso639(lang, language))
00759 av_dict_set(&st->metadata, "language", language, 0);
00760 avio_rb16(pb);
00761
00762 return 0;
00763 }
00764
00765 static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00766 {
00767 time_t creation_time;
00768 int version = avio_r8(pb);
00769 avio_rb24(pb);
00770
00771 if (version == 1) {
00772 creation_time = avio_rb64(pb);
00773 avio_rb64(pb);
00774 } else {
00775 creation_time = avio_rb32(pb);
00776 avio_rb32(pb);
00777 }
00778 mov_metadata_creation_time(&c->fc->metadata, creation_time);
00779 c->time_scale = avio_rb32(pb);
00780
00781 av_dlog(c->fc, "time scale = %i\n", c->time_scale);
00782
00783 c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
00784 avio_rb32(pb);
00785
00786 avio_rb16(pb);
00787
00788 avio_skip(pb, 10);
00789
00790 avio_skip(pb, 36);
00791
00792 avio_rb32(pb);
00793 avio_rb32(pb);
00794 avio_rb32(pb);
00795 avio_rb32(pb);
00796 avio_rb32(pb);
00797 avio_rb32(pb);
00798 avio_rb32(pb);
00799
00800 return 0;
00801 }
00802
00803 static int mov_read_smi(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00804 {
00805 AVStream *st;
00806
00807 if (c->fc->nb_streams < 1)
00808 return 0;
00809 st = c->fc->streams[c->fc->nb_streams-1];
00810
00811 if ((uint64_t)atom.size > (1<<30))
00812 return AVERROR_INVALIDDATA;
00813
00814
00815
00816 av_free(st->codec->extradata);
00817 st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
00818 if (!st->codec->extradata)
00819 return AVERROR(ENOMEM);
00820 st->codec->extradata_size = 0x5a + atom.size;
00821 memcpy(st->codec->extradata, "SVQ3", 4);
00822 avio_read(pb, st->codec->extradata + 0x5a, atom.size);
00823 av_dlog(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
00824 return 0;
00825 }
00826
00827 static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00828 {
00829 AVStream *st;
00830 int little_endian;
00831
00832 if (c->fc->nb_streams < 1)
00833 return 0;
00834 st = c->fc->streams[c->fc->nb_streams-1];
00835
00836 little_endian = avio_rb16(pb);
00837 av_dlog(c->fc, "enda %d\n", little_endian);
00838 if (little_endian == 1) {
00839 switch (st->codec->codec_id) {
00840 case CODEC_ID_PCM_S24BE:
00841 st->codec->codec_id = CODEC_ID_PCM_S24LE;
00842 break;
00843 case CODEC_ID_PCM_S32BE:
00844 st->codec->codec_id = CODEC_ID_PCM_S32LE;
00845 break;
00846 case CODEC_ID_PCM_F32BE:
00847 st->codec->codec_id = CODEC_ID_PCM_F32LE;
00848 break;
00849 case CODEC_ID_PCM_F64BE:
00850 st->codec->codec_id = CODEC_ID_PCM_F64LE;
00851 break;
00852 default:
00853 break;
00854 }
00855 }
00856 return 0;
00857 }
00858
00859 static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00860 {
00861 AVStream *st;
00862 unsigned mov_field_order;
00863 enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN;
00864
00865 if (c->fc->nb_streams < 1)
00866 return 0;
00867 st = c->fc->streams[c->fc->nb_streams-1];
00868 if (atom.size < 2)
00869 return AVERROR_INVALIDDATA;
00870 mov_field_order = avio_rb16(pb);
00871 if ((mov_field_order & 0xFF00) == 0x0100)
00872 decoded_field_order = AV_FIELD_PROGRESSIVE;
00873 else if ((mov_field_order & 0xFF00) == 0x0200) {
00874 switch (mov_field_order & 0xFF) {
00875 case 0x01: decoded_field_order = AV_FIELD_TT;
00876 break;
00877 case 0x06: decoded_field_order = AV_FIELD_BB;
00878 break;
00879 case 0x09: decoded_field_order = AV_FIELD_TB;
00880 break;
00881 case 0x0E: decoded_field_order = AV_FIELD_BT;
00882 break;
00883 }
00884 }
00885 if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) {
00886 av_log(NULL, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order);
00887 }
00888 st->codec->field_order = decoded_field_order;
00889
00890 return 0;
00891 }
00892
00893
00894 static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00895 {
00896 AVStream *st;
00897 uint64_t size;
00898 uint8_t *buf;
00899
00900 if (c->fc->nb_streams < 1)
00901 return 0;
00902 st= c->fc->streams[c->fc->nb_streams-1];
00903 size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
00904 if (size > INT_MAX || (uint64_t)atom.size > INT_MAX)
00905 return AVERROR_INVALIDDATA;
00906 buf= av_realloc(st->codec->extradata, size);
00907 if (!buf)
00908 return AVERROR(ENOMEM);
00909 st->codec->extradata= buf;
00910 buf+= st->codec->extradata_size;
00911 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
00912 AV_WB32( buf , atom.size + 8);
00913 AV_WL32( buf + 4, atom.type);
00914 avio_read(pb, buf + 8, atom.size);
00915 return 0;
00916 }
00917
00918 static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00919 {
00920 AVStream *st;
00921
00922 if (c->fc->nb_streams < 1)
00923 return 0;
00924 st = c->fc->streams[c->fc->nb_streams-1];
00925
00926 if ((uint64_t)atom.size > (1<<30))
00927 return AVERROR_INVALIDDATA;
00928
00929 if (st->codec->codec_id == CODEC_ID_QDM2 || st->codec->codec_id == CODEC_ID_QDMC) {
00930
00931 av_free(st->codec->extradata);
00932 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
00933 if (!st->codec->extradata)
00934 return AVERROR(ENOMEM);
00935 st->codec->extradata_size = atom.size;
00936 avio_read(pb, st->codec->extradata, atom.size);
00937 } else if (atom.size > 8) {
00938 int ret;
00939 if ((ret = mov_read_default(c, pb, atom)) < 0)
00940 return ret;
00941 } else
00942 avio_skip(pb, atom.size);
00943 return 0;
00944 }
00945
00950 static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00951 {
00952 AVStream *st;
00953
00954 if (c->fc->nb_streams < 1)
00955 return 0;
00956 st = c->fc->streams[c->fc->nb_streams-1];
00957
00958 if ((uint64_t)atom.size > (1<<30))
00959 return AVERROR_INVALIDDATA;
00960
00961 if (atom.size >= 10) {
00962
00963
00964 unsigned size = avio_rb32(pb);
00965 unsigned type = avio_rl32(pb);
00966 avio_seek(pb, -8, SEEK_CUR);
00967 if (type == MKTAG('f','i','e','l') && size == atom.size)
00968 return mov_read_default(c, pb, atom);
00969 }
00970 av_free(st->codec->extradata);
00971 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
00972 if (!st->codec->extradata)
00973 return AVERROR(ENOMEM);
00974 st->codec->extradata_size = atom.size;
00975 avio_read(pb, st->codec->extradata, atom.size);
00976 return 0;
00977 }
00978
00984 static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
00985 {
00986 AVStream *st;
00987
00988 if (c->fc->nb_streams < 1)
00989 return 0;
00990 if (atom.size <= 40)
00991 return 0;
00992 st = c->fc->streams[c->fc->nb_streams-1];
00993
00994 if ((uint64_t)atom.size > (1<<30))
00995 return AVERROR_INVALIDDATA;
00996
00997 av_free(st->codec->extradata);
00998 st->codec->extradata = av_mallocz(atom.size - 40 + FF_INPUT_BUFFER_PADDING_SIZE);
00999 if (!st->codec->extradata)
01000 return AVERROR(ENOMEM);
01001 st->codec->extradata_size = atom.size - 40;
01002 avio_skip(pb, 40);
01003 avio_read(pb, st->codec->extradata, atom.size - 40);
01004 return 0;
01005 }
01006
01007 static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom)
01008 {
01009 AVStream *st;
01010 MOVStreamContext *sc;
01011 unsigned int i, entries;
01012
01013 if (c->fc->nb_streams < 1)
01014 return 0;
01015 st = c->fc->streams[c->fc->nb_streams-1];
01016 sc = st->priv_data;
01017
01018 avio_r8(pb);
01019 avio_rb24(pb);
01020
01021 entries = avio_rb32(pb);
01022
01023 if (!entries)
01024 return 0;
01025 if (entries >= UINT_MAX/sizeof(int64_t))
01026 return AVERROR_INVALIDDATA;
01027
01028 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
01029 if (!sc->chunk_offsets)
01030 return AVERROR(ENOMEM);
01031 sc->chunk_count = entries;
01032
01033 if (atom.type == MKTAG('s','t','c','o'))
01034 for (i=0; i<entries; i++)
01035 sc->chunk_offsets[i] = avio_rb32(pb);
01036 else if (atom.type == MKTAG('c','o','6','4'))
01037 for (i=0; i<entries; i++)
01038 sc->chunk_offsets[i] = avio_rb64(pb);
01039 else
01040 return AVERROR_INVALIDDATA;
01041
01042 return 0;
01043 }
01044
01049 enum CodecID ff_mov_get_lpcm_codec_id(int bps, int flags)
01050 {
01051 if (flags & 1) {
01052 if (flags & 2) {
01053 if (bps == 32) return CODEC_ID_PCM_F32BE;
01054 else if (bps == 64) return CODEC_ID_PCM_F64BE;
01055 } else {
01056 if (bps == 32) return CODEC_ID_PCM_F32LE;
01057 else if (bps == 64) return CODEC_ID_PCM_F64LE;
01058 }
01059 } else {
01060 if (flags & 2) {
01061 if (bps == 8)
01062
01063 if (flags & 4) return CODEC_ID_PCM_S8;
01064 else return CODEC_ID_PCM_U8;
01065 else if (bps == 16) return CODEC_ID_PCM_S16BE;
01066 else if (bps == 24) return CODEC_ID_PCM_S24BE;
01067 else if (bps == 32) return CODEC_ID_PCM_S32BE;
01068 } else {
01069 if (bps == 8)
01070 if (flags & 4) return CODEC_ID_PCM_S8;
01071 else return CODEC_ID_PCM_U8;
01072 else if (bps == 16) return CODEC_ID_PCM_S16LE;
01073 else if (bps == 24) return CODEC_ID_PCM_S24LE;
01074 else if (bps == 32) return CODEC_ID_PCM_S32LE;
01075 }
01076 }
01077 return CODEC_ID_NONE;
01078 }
01079
01080 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
01081 {
01082 AVStream *st;
01083 MOVStreamContext *sc;
01084 int j, pseudo_stream_id;
01085
01086 if (c->fc->nb_streams < 1)
01087 return 0;
01088 st = c->fc->streams[c->fc->nb_streams-1];
01089 sc = st->priv_data;
01090
01091 for (pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) {
01092
01093 enum CodecID id;
01094 int dref_id = 1;
01095 MOVAtom a = { AV_RL32("stsd") };
01096 int64_t start_pos = avio_tell(pb);
01097 int size = avio_rb32(pb);
01098 uint32_t format = avio_rl32(pb);
01099
01100 if (size >= 16) {
01101 avio_rb32(pb);
01102 avio_rb16(pb);
01103 dref_id = avio_rb16(pb);
01104 }
01105
01106 if (st->codec->codec_tag &&
01107 st->codec->codec_tag != format &&
01108 (c->fc->video_codec_id ? ff_codec_get_id(codec_movvideo_tags, format) != c->fc->video_codec_id
01109 : st->codec->codec_tag != MKTAG('j','p','e','g'))
01110 ){
01111
01112
01113
01114 multiple_stsd:
01115 av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
01116 avio_skip(pb, size - (avio_tell(pb) - start_pos));
01117 continue;
01118 }
01119
01120 if (st->codec->codec_tag && st->codec->codec_tag == AV_RL32("avc1"))
01121 goto multiple_stsd;
01122 sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
01123 sc->dref_id= dref_id;
01124
01125 st->codec->codec_tag = format;
01126 id = ff_codec_get_id(codec_movaudio_tags, format);
01127 if (id<=0 && ((format&0xFFFF) == 'm'+('s'<<8) || (format&0xFFFF) == 'T'+('S'<<8)))
01128 id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format)&0xFFFF);
01129
01130 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) {
01131 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
01132 } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO &&
01133 format && format != MKTAG('m','p','4','s')) {
01134 id = ff_codec_get_id(codec_movvideo_tags, format);
01135 if (id <= 0)
01136 id = ff_codec_get_id(ff_codec_bmp_tags, format);
01137 if (id > 0)
01138 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
01139 else if (st->codec->codec_type == AVMEDIA_TYPE_DATA){
01140 id = ff_codec_get_id(ff_codec_movsubtitle_tags, format);
01141 if (id > 0)
01142 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
01143 }
01144 }
01145
01146 av_dlog(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
01147 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
01148 (format >> 24) & 0xff, st->codec->codec_type);
01149
01150 if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
01151 unsigned int color_depth, len;
01152 int color_greyscale;
01153
01154 st->codec->codec_id = id;
01155 avio_rb16(pb);
01156 avio_rb16(pb);
01157 avio_rb32(pb);
01158 avio_rb32(pb);
01159 avio_rb32(pb);
01160
01161 st->codec->width = avio_rb16(pb);
01162 st->codec->height = avio_rb16(pb);
01163
01164 avio_rb32(pb);
01165 avio_rb32(pb);
01166 avio_rb32(pb);
01167 avio_rb16(pb);
01168
01169 len = avio_r8(pb);
01170 if (len > 31)
01171 len = 31;
01172 mov_read_mac_string(c, pb, len, st->codec->codec_name, 32);
01173 if (len < 31)
01174 avio_skip(pb, 31 - len);
01175
01176 if (!memcmp(st->codec->codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25))
01177 st->codec->codec_tag=MKTAG('I', '4', '2', '0');
01178
01179 st->codec->bits_per_coded_sample = avio_rb16(pb);
01180 st->codec->color_table_id = avio_rb16(pb);
01181 av_dlog(c->fc, "depth %d, ctab id %d\n",
01182 st->codec->bits_per_coded_sample, st->codec->color_table_id);
01183
01184 color_depth = st->codec->bits_per_coded_sample & 0x1F;
01185 color_greyscale = st->codec->bits_per_coded_sample & 0x20;
01186
01187
01188 if ((color_depth == 2) || (color_depth == 4) ||
01189 (color_depth == 8)) {
01190
01191 unsigned int color_start, color_count, color_end;
01192 unsigned char r, g, b;
01193
01194 if (color_greyscale) {
01195 int color_index, color_dec;
01196
01197 st->codec->bits_per_coded_sample = color_depth;
01198 color_count = 1 << color_depth;
01199 color_index = 255;
01200 color_dec = 256 / (color_count - 1);
01201 for (j = 0; j < color_count; j++) {
01202 r = g = b = color_index;
01203 sc->palette[j] =
01204 (r << 16) | (g << 8) | (b);
01205 color_index -= color_dec;
01206 if (color_index < 0)
01207 color_index = 0;
01208 }
01209 } else if (st->codec->color_table_id) {
01210 const uint8_t *color_table;
01211
01212 color_count = 1 << color_depth;
01213 if (color_depth == 2)
01214 color_table = ff_qt_default_palette_4;
01215 else if (color_depth == 4)
01216 color_table = ff_qt_default_palette_16;
01217 else
01218 color_table = ff_qt_default_palette_256;
01219
01220 for (j = 0; j < color_count; j++) {
01221 r = color_table[j * 3 + 0];
01222 g = color_table[j * 3 + 1];
01223 b = color_table[j * 3 + 2];
01224 sc->palette[j] =
01225 (r << 16) | (g << 8) | (b);
01226 }
01227 } else {
01228
01229 color_start = avio_rb32(pb);
01230 color_count = avio_rb16(pb);
01231 color_end = avio_rb16(pb);
01232 if ((color_start <= 255) &&
01233 (color_end <= 255)) {
01234 for (j = color_start; j <= color_end; j++) {
01235
01236
01237
01238 avio_r8(pb);
01239 avio_r8(pb);
01240 r = avio_r8(pb);
01241 avio_r8(pb);
01242 g = avio_r8(pb);
01243 avio_r8(pb);
01244 b = avio_r8(pb);
01245 avio_r8(pb);
01246 sc->palette[j] =
01247 (r << 16) | (g << 8) | (b);
01248 }
01249 }
01250 }
01251 sc->has_palette = 1;
01252 }
01253 } else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) {
01254 int bits_per_sample, flags;
01255 uint16_t version = avio_rb16(pb);
01256
01257 st->codec->codec_id = id;
01258 avio_rb16(pb);
01259 avio_rb32(pb);
01260
01261 st->codec->channels = avio_rb16(pb);
01262 av_dlog(c->fc, "audio channels %d\n", st->codec->channels);
01263 st->codec->bits_per_coded_sample = avio_rb16(pb);
01264
01265 sc->audio_cid = avio_rb16(pb);
01266 avio_rb16(pb);
01267
01268 st->codec->sample_rate = ((avio_rb32(pb) >> 16));
01269
01270
01271 av_dlog(c->fc, "version =%d, isom =%d\n",version,c->isom);
01272 if (!c->isom) {
01273 if (version==1) {
01274 sc->samples_per_frame = avio_rb32(pb);
01275 avio_rb32(pb);
01276 sc->bytes_per_frame = avio_rb32(pb);
01277 avio_rb32(pb);
01278 } else if (version==2) {
01279 avio_rb32(pb);
01280 st->codec->sample_rate = av_int2double(avio_rb64(pb));
01281 st->codec->channels = avio_rb32(pb);
01282 avio_rb32(pb);
01283 st->codec->bits_per_coded_sample = avio_rb32(pb);
01284 flags = avio_rb32(pb);
01285 sc->bytes_per_frame = avio_rb32(pb);
01286 sc->samples_per_frame = avio_rb32(pb);
01287 if (format == MKTAG('l','p','c','m'))
01288 st->codec->codec_id = ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags);
01289 }
01290 }
01291
01292 switch (st->codec->codec_id) {
01293 case CODEC_ID_PCM_S8:
01294 case CODEC_ID_PCM_U8:
01295 if (st->codec->bits_per_coded_sample == 16)
01296 st->codec->codec_id = CODEC_ID_PCM_S16BE;
01297 break;
01298 case CODEC_ID_PCM_S16LE:
01299 case CODEC_ID_PCM_S16BE:
01300 if (st->codec->bits_per_coded_sample == 8)
01301 st->codec->codec_id = CODEC_ID_PCM_S8;
01302 else if (st->codec->bits_per_coded_sample == 24)
01303 st->codec->codec_id =
01304 st->codec->codec_id == CODEC_ID_PCM_S16BE ?
01305 CODEC_ID_PCM_S24BE : CODEC_ID_PCM_S24LE;
01306 break;
01307
01308 case CODEC_ID_MACE3:
01309 sc->samples_per_frame = 6;
01310 sc->bytes_per_frame = 2*st->codec->channels;
01311 break;
01312 case CODEC_ID_MACE6:
01313 sc->samples_per_frame = 6;
01314 sc->bytes_per_frame = 1*st->codec->channels;
01315 break;
01316 case CODEC_ID_ADPCM_IMA_QT:
01317 sc->samples_per_frame = 64;
01318 sc->bytes_per_frame = 34*st->codec->channels;
01319 break;
01320 case CODEC_ID_GSM:
01321 sc->samples_per_frame = 160;
01322 sc->bytes_per_frame = 33;
01323 break;
01324 default:
01325 break;
01326 }
01327
01328 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
01329 if (bits_per_sample) {
01330 st->codec->bits_per_coded_sample = bits_per_sample;
01331 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
01332 }
01333 } else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){
01334
01335
01336 MOVAtom fake_atom = { .size = size - (avio_tell(pb) - start_pos) };
01337 if (format != AV_RL32("mp4s"))
01338 mov_read_glbl(c, pb, fake_atom);
01339 st->codec->codec_id= id;
01340 st->codec->width = sc->width;
01341 st->codec->height = sc->height;
01342 } else {
01343
01344 avio_skip(pb, size - (avio_tell(pb) - start_pos));
01345 }
01346
01347 a.size = size - (avio_tell(pb) - start_pos);
01348 if (a.size > 8) {
01349 int ret;
01350 if ((ret = mov_read_default(c, pb, a)) < 0)
01351 return ret;
01352 } else if (a.size > 0)
01353 avio_skip(pb, a.size);
01354 }
01355
01356 if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
01357 st->codec->sample_rate= sc->time_scale;
01358
01359
01360 switch (st->codec->codec_id) {
01361 #if CONFIG_DV_DEMUXER
01362 case CODEC_ID_DVAUDIO:
01363 c->dv_fctx = avformat_alloc_context();
01364 c->dv_demux = avpriv_dv_init_demux(c->dv_fctx);
01365 if (!c->dv_demux) {
01366 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
01367 return AVERROR(ENOMEM);
01368 }
01369 sc->dv_audio_container = 1;
01370 st->codec->codec_id = CODEC_ID_PCM_S16LE;
01371 break;
01372 #endif
01373
01374 case CODEC_ID_QCELP:
01375
01376 if (st->codec->codec_tag != MKTAG('Q','c','l','p'))
01377 st->codec->sample_rate = 8000;
01378 st->codec->frame_size= 160;
01379 st->codec->channels= 1;
01380 break;
01381 case CODEC_ID_AMR_NB:
01382 st->codec->channels= 1;
01383
01384 st->codec->sample_rate = 8000;
01385
01386 st->codec->frame_size = 160;
01387 break;
01388 case CODEC_ID_AMR_WB:
01389 st->codec->channels = 1;
01390 st->codec->sample_rate = 16000;
01391 st->codec->frame_size = 320;
01392 break;
01393 case CODEC_ID_MP2:
01394 case CODEC_ID_MP3:
01395 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
01396 st->need_parsing = AVSTREAM_PARSE_FULL;
01397 break;
01398 case CODEC_ID_GSM:
01399 case CODEC_ID_ADPCM_MS:
01400 case CODEC_ID_ADPCM_IMA_WAV:
01401 st->codec->frame_size = sc->samples_per_frame;
01402 st->codec->block_align = sc->bytes_per_frame;
01403 break;
01404 case CODEC_ID_ALAC:
01405 if (st->codec->extradata_size == 36) {
01406 st->codec->frame_size = AV_RB32(st->codec->extradata+12);
01407 st->codec->channels = AV_RB8 (st->codec->extradata+21);
01408 st->codec->sample_rate = AV_RB32(st->codec->extradata+32);
01409 }
01410 break;
01411 default:
01412 break;
01413 }
01414
01415 return 0;
01416 }
01417
01418 static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
01419 {
01420 int entries;
01421
01422 avio_r8(pb);
01423 avio_rb24(pb);
01424 entries = avio_rb32(pb);
01425
01426 return ff_mov_read_stsd_entries(c, pb, entries);
01427 }
01428
01429 static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
01430 {
01431 AVStream *st;
01432 MOVStreamContext *sc;
01433 unsigned int i, entries;
01434
01435 if (c->fc->nb_streams < 1)
01436 return 0;
01437 st = c->fc->streams[c->fc->nb_streams-1];
01438 sc = st->priv_data;
01439
01440 avio_r8(pb);
01441 avio_rb24(pb);
01442
01443 entries = avio_rb32(pb);
01444
01445 av_dlog(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
01446
01447 if (!entries)
01448 return 0;
01449 if (entries >= UINT_MAX / sizeof(*sc->stsc_data))
01450 return AVERROR_INVALIDDATA;
01451 sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
01452 if (!sc->stsc_data)
01453 return AVERROR(ENOMEM);
01454 sc->stsc_count = entries;
01455
01456 for (i=0; i<entries; i++) {
01457 sc->stsc_data[i].first = avio_rb32(pb);
01458 sc->stsc_data[i].count = avio_rb32(pb);
01459 sc->stsc_data[i].id = avio_rb32(pb);
01460 }
01461 return 0;
01462 }
01463
01464 static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom)
01465 {
01466 AVStream *st;
01467 MOVStreamContext *sc;
01468 unsigned i, entries;
01469
01470 if (c->fc->nb_streams < 1)
01471 return 0;
01472 st = c->fc->streams[c->fc->nb_streams-1];
01473 sc = st->priv_data;
01474
01475 avio_rb32(pb);
01476
01477 entries = avio_rb32(pb);
01478 if (entries >= UINT_MAX / sizeof(*sc->stps_data))
01479 return AVERROR_INVALIDDATA;
01480 sc->stps_data = av_malloc(entries * sizeof(*sc->stps_data));
01481 if (!sc->stps_data)
01482 return AVERROR(ENOMEM);
01483 sc->stps_count = entries;
01484
01485 for (i = 0; i < entries; i++) {
01486 sc->stps_data[i] = avio_rb32(pb);
01487
01488 }
01489
01490 return 0;
01491 }
01492
01493 static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
01494 {
01495 AVStream *st;
01496 MOVStreamContext *sc;
01497 unsigned int i, entries;
01498
01499 if (c->fc->nb_streams < 1)
01500 return 0;
01501 st = c->fc->streams[c->fc->nb_streams-1];
01502 sc = st->priv_data;
01503
01504 avio_r8(pb);
01505 avio_rb24(pb);
01506
01507 entries = avio_rb32(pb);
01508
01509 av_dlog(c->fc, "keyframe_count = %d\n", entries);
01510
01511 if (!entries)
01512 return 0;
01513 if (entries >= UINT_MAX / sizeof(int))
01514 return AVERROR_INVALIDDATA;
01515 sc->keyframes = av_malloc(entries * sizeof(int));
01516 if (!sc->keyframes)
01517 return AVERROR(ENOMEM);
01518 sc->keyframe_count = entries;
01519
01520 for (i=0; i<entries; i++) {
01521 sc->keyframes[i] = avio_rb32(pb);
01522
01523 }
01524 return 0;
01525 }
01526
01527 static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom)
01528 {
01529 AVStream *st;
01530 MOVStreamContext *sc;
01531 unsigned int i, entries, sample_size, field_size, num_bytes;
01532 GetBitContext gb;
01533 unsigned char* buf;
01534
01535 if (c->fc->nb_streams < 1)
01536 return 0;
01537 st = c->fc->streams[c->fc->nb_streams-1];
01538 sc = st->priv_data;
01539
01540 avio_r8(pb);
01541 avio_rb24(pb);
01542
01543 if (atom.type == MKTAG('s','t','s','z')) {
01544 sample_size = avio_rb32(pb);
01545 if (!sc->sample_size)
01546 sc->sample_size = sample_size;
01547 field_size = 32;
01548 } else {
01549 sample_size = 0;
01550 avio_rb24(pb);
01551 field_size = avio_r8(pb);
01552 }
01553 entries = avio_rb32(pb);
01554
01555 av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
01556
01557 sc->sample_count = entries;
01558 if (sample_size)
01559 return 0;
01560
01561 if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) {
01562 av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size);
01563 return AVERROR_INVALIDDATA;
01564 }
01565
01566 if (!entries)
01567 return 0;
01568 if (entries >= UINT_MAX / sizeof(int) || entries >= (UINT_MAX - 4) / field_size)
01569 return AVERROR_INVALIDDATA;
01570 sc->sample_sizes = av_malloc(entries * sizeof(int));
01571 if (!sc->sample_sizes)
01572 return AVERROR(ENOMEM);
01573
01574 num_bytes = (entries*field_size+4)>>3;
01575
01576 buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE);
01577 if (!buf) {
01578 av_freep(&sc->sample_sizes);
01579 return AVERROR(ENOMEM);
01580 }
01581
01582 if (avio_read(pb, buf, num_bytes) < num_bytes) {
01583 av_freep(&sc->sample_sizes);
01584 av_free(buf);
01585 return AVERROR_INVALIDDATA;
01586 }
01587
01588 init_get_bits(&gb, buf, 8*num_bytes);
01589
01590 for (i=0; i<entries; i++)
01591 sc->sample_sizes[i] = get_bits_long(&gb, field_size);
01592
01593 av_free(buf);
01594 return 0;
01595 }
01596
01597 static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
01598 {
01599 AVStream *st;
01600 MOVStreamContext *sc;
01601 unsigned int i, entries;
01602 int64_t duration=0;
01603 int64_t total_sample_count=0;
01604
01605 if (c->fc->nb_streams < 1)
01606 return 0;
01607 st = c->fc->streams[c->fc->nb_streams-1];
01608 sc = st->priv_data;
01609
01610 avio_r8(pb);
01611 avio_rb24(pb);
01612 entries = avio_rb32(pb);
01613
01614 av_dlog(c->fc, "track[%i].stts.entries = %i\n",
01615 c->fc->nb_streams-1, entries);
01616
01617 if (!entries)
01618 return 0;
01619 if (entries >= UINT_MAX / sizeof(*sc->stts_data))
01620 return AVERROR(EINVAL);
01621
01622 sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
01623 if (!sc->stts_data)
01624 return AVERROR(ENOMEM);
01625
01626 sc->stts_count = entries;
01627
01628 for (i=0; i<entries; i++) {
01629 int sample_duration;
01630 int sample_count;
01631
01632 sample_count=avio_rb32(pb);
01633 sample_duration = avio_rb32(pb);
01634 sc->stts_data[i].count= sample_count;
01635 sc->stts_data[i].duration= sample_duration;
01636
01637 av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n",
01638 sample_count, sample_duration);
01639
01640 duration+=(int64_t)sample_duration*sample_count;
01641 total_sample_count+=sample_count;
01642 }
01643
01644 st->nb_frames= total_sample_count;
01645 if (duration)
01646 st->duration= duration;
01647 return 0;
01648 }
01649
01650 static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
01651 {
01652 AVStream *st;
01653 MOVStreamContext *sc;
01654 unsigned int i, entries;
01655
01656 if (c->fc->nb_streams < 1)
01657 return 0;
01658 st = c->fc->streams[c->fc->nb_streams-1];
01659 sc = st->priv_data;
01660
01661 avio_r8(pb);
01662 avio_rb24(pb);
01663 entries = avio_rb32(pb);
01664
01665 av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
01666
01667 if (!entries)
01668 return 0;
01669 if (entries >= UINT_MAX / sizeof(*sc->ctts_data))
01670 return AVERROR_INVALIDDATA;
01671 sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
01672 if (!sc->ctts_data)
01673 return AVERROR(ENOMEM);
01674 sc->ctts_count = entries;
01675
01676 for (i=0; i<entries; i++) {
01677 int count =avio_rb32(pb);
01678 int duration =avio_rb32(pb);
01679
01680 sc->ctts_data[i].count = count;
01681 sc->ctts_data[i].duration= duration;
01682 if (duration < 0)
01683 sc->dts_shift = FFMAX(sc->dts_shift, -duration);
01684 }
01685
01686 av_dlog(c->fc, "dts shift %d\n", sc->dts_shift);
01687
01688 return 0;
01689 }
01690
01691 static void mov_build_index(MOVContext *mov, AVStream *st)
01692 {
01693 MOVStreamContext *sc = st->priv_data;
01694 int64_t current_offset;
01695 int64_t current_dts = 0;
01696 unsigned int stts_index = 0;
01697 unsigned int stsc_index = 0;
01698 unsigned int stss_index = 0;
01699 unsigned int stps_index = 0;
01700 unsigned int i, j;
01701 uint64_t stream_size = 0;
01702 AVIndexEntry *mem;
01703
01704
01705 if (sc->time_offset && mov->time_scale > 0) {
01706 if (sc->time_offset < 0)
01707 sc->time_offset = av_rescale(sc->time_offset, sc->time_scale, mov->time_scale);
01708 current_dts = -sc->time_offset;
01709 if (sc->ctts_data && sc->stts_data && sc->stts_data[0].duration &&
01710 sc->ctts_data[0].duration / sc->stts_data[0].duration > 16) {
01711
01712
01713 sc->wrong_dts = 1;
01714 st->codec->has_b_frames = 1;
01715 }
01716 }
01717
01718
01719 if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
01720 sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
01721 unsigned int current_sample = 0;
01722 unsigned int stts_sample = 0;
01723 unsigned int sample_size;
01724 unsigned int distance = 0;
01725 int key_off = sc->keyframes && sc->keyframes[0] == 1;
01726
01727 current_dts -= sc->dts_shift;
01728
01729 if (!sc->sample_count)
01730 return;
01731 if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
01732 return;
01733 mem = av_realloc(st->index_entries, (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries));
01734 if (!mem)
01735 return;
01736 st->index_entries = mem;
01737 st->index_entries_allocated_size = (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries);
01738
01739 for (i = 0; i < sc->chunk_count; i++) {
01740 current_offset = sc->chunk_offsets[i];
01741 while (stsc_index + 1 < sc->stsc_count &&
01742 i + 1 == sc->stsc_data[stsc_index + 1].first)
01743 stsc_index++;
01744 for (j = 0; j < sc->stsc_data[stsc_index].count; j++) {
01745 int keyframe = 0;
01746 if (current_sample >= sc->sample_count) {
01747 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
01748 return;
01749 }
01750
01751 if (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index]) {
01752 keyframe = 1;
01753 if (stss_index + 1 < sc->keyframe_count)
01754 stss_index++;
01755 } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) {
01756 keyframe = 1;
01757 if (stps_index + 1 < sc->stps_count)
01758 stps_index++;
01759 }
01760 if (keyframe)
01761 distance = 0;
01762 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
01763 if (sc->pseudo_stream_id == -1 ||
01764 sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
01765 AVIndexEntry *e = &st->index_entries[st->nb_index_entries++];
01766 e->pos = current_offset;
01767 e->timestamp = current_dts;
01768 e->size = sample_size;
01769 e->min_distance = distance;
01770 e->flags = keyframe ? AVINDEX_KEYFRAME : 0;
01771 av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
01772 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
01773 current_offset, current_dts, sample_size, distance, keyframe);
01774 }
01775
01776 current_offset += sample_size;
01777 stream_size += sample_size;
01778 current_dts += sc->stts_data[stts_index].duration;
01779 distance++;
01780 stts_sample++;
01781 current_sample++;
01782 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
01783 stts_sample = 0;
01784 stts_index++;
01785 }
01786 }
01787 }
01788 if (st->duration > 0)
01789 st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration;
01790 } else {
01791 unsigned chunk_samples, total = 0;
01792
01793
01794 for (i = 0; i < sc->stsc_count; i++) {
01795 unsigned count, chunk_count;
01796
01797 chunk_samples = sc->stsc_data[i].count;
01798 if (sc->samples_per_frame && chunk_samples % sc->samples_per_frame) {
01799 av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n");
01800 return;
01801 }
01802
01803 if (sc->samples_per_frame >= 160) {
01804 count = chunk_samples / sc->samples_per_frame;
01805 } else if (sc->samples_per_frame > 1) {
01806 unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame;
01807 count = (chunk_samples+samples-1) / samples;
01808 } else {
01809 count = (chunk_samples+1023) / 1024;
01810 }
01811
01812 if (i < sc->stsc_count - 1)
01813 chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first;
01814 else
01815 chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1);
01816 total += chunk_count * count;
01817 }
01818
01819 av_dlog(mov->fc, "chunk count %d\n", total);
01820 if (total >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
01821 return;
01822 mem = av_realloc(st->index_entries, (st->nb_index_entries + total) * sizeof(*st->index_entries));
01823 if (!mem)
01824 return;
01825 st->index_entries = mem;
01826 st->index_entries_allocated_size = (st->nb_index_entries + total) * sizeof(*st->index_entries);
01827
01828
01829 for (i = 0; i < sc->chunk_count; i++) {
01830 current_offset = sc->chunk_offsets[i];
01831 if (stsc_index + 1 < sc->stsc_count &&
01832 i + 1 == sc->stsc_data[stsc_index + 1].first)
01833 stsc_index++;
01834 chunk_samples = sc->stsc_data[stsc_index].count;
01835
01836 while (chunk_samples > 0) {
01837 AVIndexEntry *e;
01838 unsigned size, samples;
01839
01840 if (sc->samples_per_frame >= 160) {
01841 samples = sc->samples_per_frame;
01842 size = sc->bytes_per_frame;
01843 } else {
01844 if (sc->samples_per_frame > 1) {
01845 samples = FFMIN((1024 / sc->samples_per_frame)*
01846 sc->samples_per_frame, chunk_samples);
01847 size = (samples / sc->samples_per_frame) * sc->bytes_per_frame;
01848 } else {
01849 samples = FFMIN(1024, chunk_samples);
01850 size = samples * sc->sample_size;
01851 }
01852 }
01853
01854 if (st->nb_index_entries >= total) {
01855 av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total);
01856 return;
01857 }
01858 e = &st->index_entries[st->nb_index_entries++];
01859 e->pos = current_offset;
01860 e->timestamp = current_dts;
01861 e->size = size;
01862 e->min_distance = 0;
01863 e->flags = AVINDEX_KEYFRAME;
01864 av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
01865 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
01866 size, samples);
01867
01868 current_offset += size;
01869 current_dts += samples;
01870 chunk_samples -= samples;
01871 }
01872 }
01873 }
01874 }
01875
01876 static int mov_open_dref(AVIOContext **pb, char *src, MOVDref *ref,
01877 AVIOInterruptCB *int_cb)
01878 {
01879
01880
01881 if (ref->nlvl_to > 0 && ref->nlvl_from > 0) {
01882 char filename[1024];
01883 char *src_path;
01884 int i, l;
01885
01886
01887 src_path = strrchr(src, '/');
01888 if (src_path)
01889 src_path++;
01890 else
01891 src_path = src;
01892
01893
01894 for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--)
01895 if (ref->path[l] == '/') {
01896 if (i == ref->nlvl_to - 1)
01897 break;
01898 else
01899 i++;
01900 }
01901
01902
01903 if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) {
01904 memcpy(filename, src, src_path - src);
01905 filename[src_path - src] = 0;
01906
01907 for (i = 1; i < ref->nlvl_from; i++)
01908 av_strlcat(filename, "../", 1024);
01909
01910 av_strlcat(filename, ref->path + l + 1, 1024);
01911
01912 if (!avio_open2(pb, filename, AVIO_FLAG_READ, int_cb, NULL))
01913 return 0;
01914 }
01915 }
01916
01917 return AVERROR(ENOENT);
01918 }
01919
01920 static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom)
01921 {
01922 AVStream *st;
01923 MOVStreamContext *sc;
01924 int ret;
01925
01926 st = avformat_new_stream(c->fc, NULL);
01927 if (!st) return AVERROR(ENOMEM);
01928 st->id = c->fc->nb_streams;
01929 sc = av_mallocz(sizeof(MOVStreamContext));
01930 if (!sc) return AVERROR(ENOMEM);
01931
01932 st->priv_data = sc;
01933 st->codec->codec_type = AVMEDIA_TYPE_DATA;
01934 sc->ffindex = st->index;
01935
01936 if ((ret = mov_read_default(c, pb, atom)) < 0)
01937 return ret;
01938
01939
01940 if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
01941 (!sc->sample_size && !sc->sample_count))) {
01942 av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
01943 st->index);
01944 return 0;
01945 }
01946
01947 if (sc->time_scale <= 0) {
01948 av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", st->index);
01949 sc->time_scale = c->time_scale;
01950 if (sc->time_scale <= 0)
01951 sc->time_scale = 1;
01952 }
01953
01954 avpriv_set_pts_info(st, 64, 1, sc->time_scale);
01955
01956 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
01957 !st->codec->frame_size && sc->stts_count == 1) {
01958 st->codec->frame_size = av_rescale(sc->stts_data[0].duration,
01959 st->codec->sample_rate, sc->time_scale);
01960 av_dlog(c->fc, "frame size %d\n", st->codec->frame_size);
01961 }
01962
01963 mov_build_index(c, st);
01964
01965 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
01966 MOVDref *dref = &sc->drefs[sc->dref_id - 1];
01967 if (mov_open_dref(&sc->pb, c->fc->filename, dref, &c->fc->interrupt_callback) < 0)
01968 av_log(c->fc, AV_LOG_ERROR,
01969 "stream %d, error opening alias: path='%s', dir='%s', "
01970 "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n",
01971 st->index, dref->path, dref->dir, dref->filename,
01972 dref->volume, dref->nlvl_from, dref->nlvl_to);
01973 } else
01974 sc->pb = c->fc->pb;
01975
01976 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
01977 if (!st->sample_aspect_ratio.num &&
01978 (st->codec->width != sc->width || st->codec->height != sc->height)) {
01979 st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) /
01980 ((double)st->codec->width * sc->height), INT_MAX);
01981 }
01982
01983 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
01984 sc->time_scale*st->nb_frames, st->duration, INT_MAX);
01985
01986 if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1))
01987 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
01988 sc->time_scale, sc->stts_data[0].duration, INT_MAX);
01989 }
01990
01991 switch (st->codec->codec_id) {
01992 #if CONFIG_H261_DECODER
01993 case CODEC_ID_H261:
01994 #endif
01995 #if CONFIG_H263_DECODER
01996 case CODEC_ID_H263:
01997 #endif
01998 #if CONFIG_MPEG4_DECODER
01999 case CODEC_ID_MPEG4:
02000 #endif
02001 st->codec->width = 0;
02002 st->codec->height= 0;
02003 break;
02004 }
02005
02006
02007 av_freep(&sc->chunk_offsets);
02008 av_freep(&sc->stsc_data);
02009 av_freep(&sc->sample_sizes);
02010 av_freep(&sc->keyframes);
02011 av_freep(&sc->stts_data);
02012 av_freep(&sc->stps_data);
02013
02014 return 0;
02015 }
02016
02017 static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
02018 {
02019 int ret;
02020 c->itunes_metadata = 1;
02021 ret = mov_read_default(c, pb, atom);
02022 c->itunes_metadata = 0;
02023 return ret;
02024 }
02025
02026 static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom)
02027 {
02028 while (atom.size > 8) {
02029 uint32_t tag = avio_rl32(pb);
02030 atom.size -= 4;
02031 if (tag == MKTAG('h','d','l','r')) {
02032 avio_seek(pb, -8, SEEK_CUR);
02033 atom.size += 8;
02034 return mov_read_default(c, pb, atom);
02035 }
02036 }
02037 return 0;
02038 }
02039
02040 static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
02041 {
02042 int i;
02043 int width;
02044 int height;
02045 int64_t disp_transform[2];
02046 int display_matrix[3][2];
02047 AVStream *st;
02048 MOVStreamContext *sc;
02049 int version;
02050
02051 if (c->fc->nb_streams < 1)
02052 return 0;
02053 st = c->fc->streams[c->fc->nb_streams-1];
02054 sc = st->priv_data;
02055
02056 version = avio_r8(pb);
02057 avio_rb24(pb);
02058
02059
02060
02061
02062
02063
02064
02065 if (version == 1) {
02066 avio_rb64(pb);
02067 avio_rb64(pb);
02068 } else {
02069 avio_rb32(pb);
02070 avio_rb32(pb);
02071 }
02072 st->id = (int)avio_rb32(pb);
02073 avio_rb32(pb);
02074
02075
02076 (version == 1) ? avio_rb64(pb) : avio_rb32(pb);
02077 avio_rb32(pb);
02078 avio_rb32(pb);
02079
02080 avio_rb16(pb);
02081 avio_rb16(pb);
02082 avio_rb16(pb);
02083 avio_rb16(pb);
02084
02085
02086
02087
02088 for (i = 0; i < 3; i++) {
02089 display_matrix[i][0] = avio_rb32(pb);
02090 display_matrix[i][1] = avio_rb32(pb);
02091 avio_rb32(pb);
02092 }
02093
02094 width = avio_rb32(pb);
02095 height = avio_rb32(pb);
02096 sc->width = width >> 16;
02097 sc->height = height >> 16;
02098
02099
02100
02101
02102
02103 if (width && height &&
02104 ((display_matrix[0][0] != 65536 ||
02105 display_matrix[1][1] != 65536) &&
02106 !display_matrix[0][1] &&
02107 !display_matrix[1][0] &&
02108 !display_matrix[2][0] && !display_matrix[2][1])) {
02109 for (i = 0; i < 2; i++)
02110 disp_transform[i] =
02111 (int64_t) width * display_matrix[0][i] +
02112 (int64_t) height * display_matrix[1][i] +
02113 ((int64_t) display_matrix[2][i] << 16);
02114
02115
02116 st->sample_aspect_ratio = av_d2q(
02117 ((double) disp_transform[0] * height) /
02118 ((double) disp_transform[1] * width), INT_MAX);
02119 }
02120 return 0;
02121 }
02122
02123 static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
02124 {
02125 MOVFragment *frag = &c->fragment;
02126 MOVTrackExt *trex = NULL;
02127 int flags, track_id, i;
02128
02129 avio_r8(pb);
02130 flags = avio_rb24(pb);
02131
02132 track_id = avio_rb32(pb);
02133 if (!track_id)
02134 return AVERROR_INVALIDDATA;
02135 frag->track_id = track_id;
02136 for (i = 0; i < c->trex_count; i++)
02137 if (c->trex_data[i].track_id == frag->track_id) {
02138 trex = &c->trex_data[i];
02139 break;
02140 }
02141 if (!trex) {
02142 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
02143 return AVERROR_INVALIDDATA;
02144 }
02145
02146 if (flags & 0x01) frag->base_data_offset = avio_rb64(pb);
02147 else frag->base_data_offset = frag->moof_offset;
02148 if (flags & 0x02) frag->stsd_id = avio_rb32(pb);
02149 else frag->stsd_id = trex->stsd_id;
02150
02151 frag->duration = flags & 0x08 ? avio_rb32(pb) : trex->duration;
02152 frag->size = flags & 0x10 ? avio_rb32(pb) : trex->size;
02153 frag->flags = flags & 0x20 ? avio_rb32(pb) : trex->flags;
02154 av_dlog(c->fc, "frag flags 0x%x\n", frag->flags);
02155 return 0;
02156 }
02157
02158 static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom)
02159 {
02160 c->chapter_track = avio_rb32(pb);
02161 return 0;
02162 }
02163
02164 static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom)
02165 {
02166 MOVTrackExt *trex;
02167
02168 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
02169 return AVERROR_INVALIDDATA;
02170 trex = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data));
02171 if (!trex)
02172 return AVERROR(ENOMEM);
02173 c->trex_data = trex;
02174 trex = &c->trex_data[c->trex_count++];
02175 avio_r8(pb);
02176 avio_rb24(pb);
02177 trex->track_id = avio_rb32(pb);
02178 trex->stsd_id = avio_rb32(pb);
02179 trex->duration = avio_rb32(pb);
02180 trex->size = avio_rb32(pb);
02181 trex->flags = avio_rb32(pb);
02182 return 0;
02183 }
02184
02185 static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom)
02186 {
02187 MOVFragment *frag = &c->fragment;
02188 AVStream *st = NULL;
02189 MOVStreamContext *sc;
02190 MOVStts *ctts_data;
02191 uint64_t offset;
02192 int64_t dts;
02193 int data_offset = 0;
02194 unsigned entries, first_sample_flags = frag->flags;
02195 int flags, distance, i;
02196
02197 for (i = 0; i < c->fc->nb_streams; i++) {
02198 if (c->fc->streams[i]->id == frag->track_id) {
02199 st = c->fc->streams[i];
02200 break;
02201 }
02202 }
02203 if (!st) {
02204 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id);
02205 return AVERROR_INVALIDDATA;
02206 }
02207 sc = st->priv_data;
02208 if (sc->pseudo_stream_id+1 != frag->stsd_id)
02209 return 0;
02210 avio_r8(pb);
02211 flags = avio_rb24(pb);
02212 entries = avio_rb32(pb);
02213 av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries);
02214
02215
02216
02217
02218
02219
02220 if (!sc->ctts_count && sc->sample_count)
02221 {
02222
02223 ctts_data = av_malloc(sizeof(*sc->ctts_data));
02224 if (!ctts_data)
02225 return AVERROR(ENOMEM);
02226 sc->ctts_data = ctts_data;
02227 sc->ctts_data[sc->ctts_count].count = sc->sample_count;
02228 sc->ctts_data[sc->ctts_count].duration = 0;
02229 sc->ctts_count++;
02230 }
02231 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
02232 return AVERROR_INVALIDDATA;
02233 ctts_data = av_realloc(sc->ctts_data,
02234 (entries+sc->ctts_count)*sizeof(*sc->ctts_data));
02235 if (!ctts_data)
02236 return AVERROR(ENOMEM);
02237 sc->ctts_data = ctts_data;
02238
02239 if (flags & 0x001) data_offset = avio_rb32(pb);
02240 if (flags & 0x004) first_sample_flags = avio_rb32(pb);
02241 dts = st->duration - sc->time_offset;
02242 offset = frag->base_data_offset + data_offset;
02243 distance = 0;
02244 av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags);
02245 for (i = 0; i < entries; i++) {
02246 unsigned sample_size = frag->size;
02247 int sample_flags = i ? frag->flags : first_sample_flags;
02248 unsigned sample_duration = frag->duration;
02249 int keyframe;
02250
02251 if (flags & 0x100) sample_duration = avio_rb32(pb);
02252 if (flags & 0x200) sample_size = avio_rb32(pb);
02253 if (flags & 0x400) sample_flags = avio_rb32(pb);
02254 sc->ctts_data[sc->ctts_count].count = 1;
02255 sc->ctts_data[sc->ctts_count].duration = (flags & 0x800) ? avio_rb32(pb) : 0;
02256 sc->ctts_count++;
02257 if ((keyframe = st->codec->codec_type == AVMEDIA_TYPE_AUDIO ||
02258 (flags & 0x004 && !i && !sample_flags) || sample_flags & 0x2000000))
02259 distance = 0;
02260 av_add_index_entry(st, offset, dts, sample_size, distance,
02261 keyframe ? AVINDEX_KEYFRAME : 0);
02262 av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
02263 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
02264 offset, dts, sample_size, distance, keyframe);
02265 distance++;
02266 dts += sample_duration;
02267 offset += sample_size;
02268 }
02269 frag->moof_offset = offset;
02270 st->duration = dts + sc->time_offset;
02271 return 0;
02272 }
02273
02274
02275
02276
02277 static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom)
02278 {
02279 int err;
02280
02281 if (atom.size < 8)
02282 return 0;
02283 if (avio_rb32(pb) != 0) {
02284 avio_skip(pb, atom.size - 4);
02285 return 0;
02286 }
02287 atom.type = avio_rl32(pb);
02288 atom.size -= 8;
02289 if (atom.type != MKTAG('m','d','a','t')) {
02290 avio_skip(pb, atom.size);
02291 return 0;
02292 }
02293 err = mov_read_mdat(c, pb, atom);
02294 return err;
02295 }
02296
02297 static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom)
02298 {
02299 #if CONFIG_ZLIB
02300 AVIOContext ctx;
02301 uint8_t *cmov_data;
02302 uint8_t *moov_data;
02303 long cmov_len, moov_len;
02304 int ret = -1;
02305
02306 avio_rb32(pb);
02307 if (avio_rl32(pb) != MKTAG('d','c','o','m'))
02308 return AVERROR_INVALIDDATA;
02309 if (avio_rl32(pb) != MKTAG('z','l','i','b')) {
02310 av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !");
02311 return AVERROR_INVALIDDATA;
02312 }
02313 avio_rb32(pb);
02314 if (avio_rl32(pb) != MKTAG('c','m','v','d'))
02315 return AVERROR_INVALIDDATA;
02316 moov_len = avio_rb32(pb);
02317 cmov_len = atom.size - 6 * 4;
02318
02319 cmov_data = av_malloc(cmov_len);
02320 if (!cmov_data)
02321 return AVERROR(ENOMEM);
02322 moov_data = av_malloc(moov_len);
02323 if (!moov_data) {
02324 av_free(cmov_data);
02325 return AVERROR(ENOMEM);
02326 }
02327 avio_read(pb, cmov_data, cmov_len);
02328 if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
02329 goto free_and_return;
02330 if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
02331 goto free_and_return;
02332 atom.type = MKTAG('m','o','o','v');
02333 atom.size = moov_len;
02334 ret = mov_read_default(c, &ctx, atom);
02335 free_and_return:
02336 av_free(moov_data);
02337 av_free(cmov_data);
02338 return ret;
02339 #else
02340 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
02341 return AVERROR(ENOSYS);
02342 #endif
02343 }
02344
02345
02346 static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
02347 {
02348 MOVStreamContext *sc;
02349 int i, edit_count, version;
02350
02351 if (c->fc->nb_streams < 1)
02352 return 0;
02353 sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
02354
02355 version = avio_r8(pb);
02356 avio_rb24(pb);
02357 edit_count = avio_rb32(pb);
02358
02359 if ((uint64_t)edit_count*12+8 > atom.size)
02360 return AVERROR_INVALIDDATA;
02361
02362 for (i=0; i<edit_count; i++){
02363 int64_t time;
02364 int64_t duration;
02365 if (version == 1) {
02366 duration = avio_rb64(pb);
02367 time = avio_rb64(pb);
02368 } else {
02369 duration = avio_rb32(pb);
02370 time = (int32_t)avio_rb32(pb);
02371 }
02372 avio_rb32(pb);
02373 if (i == 0 && time >= -1) {
02374 sc->time_offset = time != -1 ? time : -duration;
02375 }
02376 }
02377
02378 if (edit_count > 1)
02379 av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
02380 "a/v desync might occur, patch welcome\n");
02381
02382 av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
02383 return 0;
02384 }
02385
02386 static const MOVParseTableEntry mov_default_parse_table[] = {
02387 { MKTAG('a','v','s','s'), mov_read_extradata },
02388 { MKTAG('c','h','p','l'), mov_read_chpl },
02389 { MKTAG('c','o','6','4'), mov_read_stco },
02390 { MKTAG('c','t','t','s'), mov_read_ctts },
02391 { MKTAG('d','i','n','f'), mov_read_default },
02392 { MKTAG('d','r','e','f'), mov_read_dref },
02393 { MKTAG('e','d','t','s'), mov_read_default },
02394 { MKTAG('e','l','s','t'), mov_read_elst },
02395 { MKTAG('e','n','d','a'), mov_read_enda },
02396 { MKTAG('f','i','e','l'), mov_read_fiel },
02397 { MKTAG('f','t','y','p'), mov_read_ftyp },
02398 { MKTAG('g','l','b','l'), mov_read_glbl },
02399 { MKTAG('h','d','l','r'), mov_read_hdlr },
02400 { MKTAG('i','l','s','t'), mov_read_ilst },
02401 { MKTAG('j','p','2','h'), mov_read_extradata },
02402 { MKTAG('m','d','a','t'), mov_read_mdat },
02403 { MKTAG('m','d','h','d'), mov_read_mdhd },
02404 { MKTAG('m','d','i','a'), mov_read_default },
02405 { MKTAG('m','e','t','a'), mov_read_meta },
02406 { MKTAG('m','i','n','f'), mov_read_default },
02407 { MKTAG('m','o','o','f'), mov_read_moof },
02408 { MKTAG('m','o','o','v'), mov_read_moov },
02409 { MKTAG('m','v','e','x'), mov_read_default },
02410 { MKTAG('m','v','h','d'), mov_read_mvhd },
02411 { MKTAG('S','M','I',' '), mov_read_smi },
02412 { MKTAG('a','l','a','c'), mov_read_extradata },
02413 { MKTAG('a','v','c','C'), mov_read_glbl },
02414 { MKTAG('p','a','s','p'), mov_read_pasp },
02415 { MKTAG('s','t','b','l'), mov_read_default },
02416 { MKTAG('s','t','c','o'), mov_read_stco },
02417 { MKTAG('s','t','p','s'), mov_read_stps },
02418 { MKTAG('s','t','r','f'), mov_read_strf },
02419 { MKTAG('s','t','s','c'), mov_read_stsc },
02420 { MKTAG('s','t','s','d'), mov_read_stsd },
02421 { MKTAG('s','t','s','s'), mov_read_stss },
02422 { MKTAG('s','t','s','z'), mov_read_stsz },
02423 { MKTAG('s','t','t','s'), mov_read_stts },
02424 { MKTAG('s','t','z','2'), mov_read_stsz },
02425 { MKTAG('t','k','h','d'), mov_read_tkhd },
02426 { MKTAG('t','f','h','d'), mov_read_tfhd },
02427 { MKTAG('t','r','a','k'), mov_read_trak },
02428 { MKTAG('t','r','a','f'), mov_read_default },
02429 { MKTAG('t','r','e','f'), mov_read_default },
02430 { MKTAG('c','h','a','p'), mov_read_chap },
02431 { MKTAG('t','r','e','x'), mov_read_trex },
02432 { MKTAG('t','r','u','n'), mov_read_trun },
02433 { MKTAG('u','d','t','a'), mov_read_default },
02434 { MKTAG('w','a','v','e'), mov_read_wave },
02435 { MKTAG('e','s','d','s'), mov_read_esds },
02436 { MKTAG('d','a','c','3'), mov_read_dac3 },
02437 { MKTAG('w','i','d','e'), mov_read_wide },
02438 { MKTAG('w','f','e','x'), mov_read_wfex },
02439 { MKTAG('c','m','o','v'), mov_read_cmov },
02440 { MKTAG('c','h','a','n'), mov_read_chan },
02441 { 0, NULL }
02442 };
02443
02444 static int mov_probe(AVProbeData *p)
02445 {
02446 unsigned int offset;
02447 uint32_t tag;
02448 int score = 0;
02449
02450
02451 offset = 0;
02452 for (;;) {
02453
02454 if ((offset + 8) > (unsigned int)p->buf_size)
02455 return score;
02456 tag = AV_RL32(p->buf + offset + 4);
02457 switch(tag) {
02458
02459 case MKTAG('j','P',' ',' '):
02460 case MKTAG('m','o','o','v'):
02461 case MKTAG('m','d','a','t'):
02462 case MKTAG('p','n','o','t'):
02463 case MKTAG('u','d','t','a'):
02464 case MKTAG('f','t','y','p'):
02465 return AVPROBE_SCORE_MAX;
02466
02467 case MKTAG('e','d','i','w'):
02468 case MKTAG('w','i','d','e'):
02469 case MKTAG('f','r','e','e'):
02470 case MKTAG('j','u','n','k'):
02471 case MKTAG('p','i','c','t'):
02472 return AVPROBE_SCORE_MAX - 5;
02473 case MKTAG(0x82,0x82,0x7f,0x7d):
02474 case MKTAG('s','k','i','p'):
02475 case MKTAG('u','u','i','d'):
02476 case MKTAG('p','r','f','l'):
02477 offset = AV_RB32(p->buf+offset) + offset;
02478
02479 score = AVPROBE_SCORE_MAX - 50;
02480 break;
02481 default:
02482
02483 return score;
02484 }
02485 }
02486 }
02487
02488
02489 static void mov_read_chapters(AVFormatContext *s)
02490 {
02491 MOVContext *mov = s->priv_data;
02492 AVStream *st = NULL;
02493 MOVStreamContext *sc;
02494 int64_t cur_pos;
02495 int i;
02496
02497 for (i = 0; i < s->nb_streams; i++)
02498 if (s->streams[i]->id == mov->chapter_track) {
02499 st = s->streams[i];
02500 break;
02501 }
02502 if (!st) {
02503 av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n");
02504 return;
02505 }
02506
02507 st->discard = AVDISCARD_ALL;
02508 sc = st->priv_data;
02509 cur_pos = avio_tell(sc->pb);
02510
02511 for (i = 0; i < st->nb_index_entries; i++) {
02512 AVIndexEntry *sample = &st->index_entries[i];
02513 int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration;
02514 uint8_t *title;
02515 uint16_t ch;
02516 int len, title_len;
02517
02518 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
02519 av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i);
02520 goto finish;
02521 }
02522
02523
02524 len = avio_rb16(sc->pb);
02525 if (len > sample->size-2)
02526 continue;
02527 title_len = 2*len + 1;
02528 if (!(title = av_mallocz(title_len)))
02529 goto finish;
02530
02531
02532
02533
02534 if (!len) {
02535 title[0] = 0;
02536 } else {
02537 ch = avio_rb16(sc->pb);
02538 if (ch == 0xfeff)
02539 avio_get_str16be(sc->pb, len, title, title_len);
02540 else if (ch == 0xfffe)
02541 avio_get_str16le(sc->pb, len, title, title_len);
02542 else {
02543 AV_WB16(title, ch);
02544 if (len == 1 || len == 2)
02545 title[len] = 0;
02546 else
02547 avio_get_str(sc->pb, len - 2, title + 2, title_len - 2);
02548 }
02549 }
02550
02551 avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title);
02552 av_freep(&title);
02553 }
02554 finish:
02555 avio_seek(sc->pb, cur_pos, SEEK_SET);
02556 }
02557
02558 static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
02559 {
02560 MOVContext *mov = s->priv_data;
02561 AVIOContext *pb = s->pb;
02562 int err;
02563 MOVAtom atom = { AV_RL32("root") };
02564
02565 mov->fc = s;
02566
02567 if (pb->seekable)
02568 atom.size = avio_size(pb);
02569 else
02570 atom.size = INT64_MAX;
02571
02572
02573 if ((err = mov_read_default(mov, pb, atom)) < 0) {
02574 av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
02575 return err;
02576 }
02577 if (!mov->found_moov) {
02578 av_log(s, AV_LOG_ERROR, "moov atom not found\n");
02579 return AVERROR_INVALIDDATA;
02580 }
02581 av_dlog(mov->fc, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb));
02582
02583 if (pb->seekable && mov->chapter_track > 0)
02584 mov_read_chapters(s);
02585
02586 return 0;
02587 }
02588
02589 static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st)
02590 {
02591 AVIndexEntry *sample = NULL;
02592 int64_t best_dts = INT64_MAX;
02593 int i;
02594 for (i = 0; i < s->nb_streams; i++) {
02595 AVStream *avst = s->streams[i];
02596 MOVStreamContext *msc = avst->priv_data;
02597 if (msc->pb && msc->current_sample < avst->nb_index_entries) {
02598 AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample];
02599 int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
02600 av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
02601 if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) ||
02602 (s->pb->seekable &&
02603 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
02604 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
02605 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
02606 sample = current_sample;
02607 best_dts = dts;
02608 *st = avst;
02609 }
02610 }
02611 }
02612 return sample;
02613 }
02614
02615 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
02616 {
02617 MOVContext *mov = s->priv_data;
02618 MOVStreamContext *sc;
02619 AVIndexEntry *sample;
02620 AVStream *st = NULL;
02621 int ret;
02622 retry:
02623 sample = mov_find_next_sample(s, &st);
02624 if (!sample) {
02625 mov->found_mdat = 0;
02626 if (s->pb->seekable||
02627 mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 ||
02628 s->pb->eof_reached)
02629 return AVERROR_EOF;
02630 av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb));
02631 goto retry;
02632 }
02633 sc = st->priv_data;
02634
02635 sc->current_sample++;
02636
02637 if (st->discard != AVDISCARD_ALL) {
02638 if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
02639 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
02640 sc->ffindex, sample->pos);
02641 return AVERROR_INVALIDDATA;
02642 }
02643 ret = av_get_packet(sc->pb, pkt, sample->size);
02644 if (ret < 0)
02645 return ret;
02646 if (sc->has_palette) {
02647 uint8_t *pal;
02648
02649 pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
02650 if (!pal) {
02651 av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n");
02652 } else {
02653 memcpy(pal, sc->palette, AVPALETTE_SIZE);
02654 sc->has_palette = 0;
02655 }
02656 }
02657 #if CONFIG_DV_DEMUXER
02658 if (mov->dv_demux && sc->dv_audio_container) {
02659 avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
02660 av_free(pkt->data);
02661 pkt->size = 0;
02662 ret = avpriv_dv_get_packet(mov->dv_demux, pkt);
02663 if (ret < 0)
02664 return ret;
02665 }
02666 #endif
02667 }
02668
02669 pkt->stream_index = sc->ffindex;
02670 pkt->dts = sample->timestamp;
02671 if (sc->ctts_data && sc->ctts_index < sc->ctts_count) {
02672 pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
02673
02674 sc->ctts_sample++;
02675 if (sc->ctts_index < sc->ctts_count &&
02676 sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
02677 sc->ctts_index++;
02678 sc->ctts_sample = 0;
02679 }
02680 if (sc->wrong_dts)
02681 pkt->dts = AV_NOPTS_VALUE;
02682 } else {
02683 int64_t next_dts = (sc->current_sample < st->nb_index_entries) ?
02684 st->index_entries[sc->current_sample].timestamp : st->duration;
02685 pkt->duration = next_dts - pkt->dts;
02686 pkt->pts = pkt->dts;
02687 }
02688 if (st->discard == AVDISCARD_ALL)
02689 goto retry;
02690 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0;
02691 pkt->pos = sample->pos;
02692 av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
02693 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
02694 return 0;
02695 }
02696
02697 static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags)
02698 {
02699 MOVStreamContext *sc = st->priv_data;
02700 int sample, time_sample;
02701 int i;
02702
02703 sample = av_index_search_timestamp(st, timestamp, flags);
02704 av_dlog(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
02705 if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
02706 sample = 0;
02707 if (sample < 0)
02708 return AVERROR_INVALIDDATA;
02709 sc->current_sample = sample;
02710 av_dlog(s, "stream %d, found sample %d\n", st->index, sc->current_sample);
02711
02712 if (sc->ctts_data) {
02713 time_sample = 0;
02714 for (i = 0; i < sc->ctts_count; i++) {
02715 int next = time_sample + sc->ctts_data[i].count;
02716 if (next > sc->current_sample) {
02717 sc->ctts_index = i;
02718 sc->ctts_sample = sc->current_sample - time_sample;
02719 break;
02720 }
02721 time_sample = next;
02722 }
02723 }
02724 return sample;
02725 }
02726
02727 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
02728 {
02729 AVStream *st;
02730 int64_t seek_timestamp, timestamp;
02731 int sample;
02732 int i;
02733
02734 if (stream_index >= s->nb_streams)
02735 return AVERROR_INVALIDDATA;
02736 if (sample_time < 0)
02737 sample_time = 0;
02738
02739 st = s->streams[stream_index];
02740 sample = mov_seek_stream(s, st, sample_time, flags);
02741 if (sample < 0)
02742 return sample;
02743
02744
02745 seek_timestamp = st->index_entries[sample].timestamp;
02746
02747 for (i = 0; i < s->nb_streams; i++) {
02748 st = s->streams[i];
02749 if (stream_index == i)
02750 continue;
02751
02752 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
02753 mov_seek_stream(s, st, timestamp, flags);
02754 }
02755 return 0;
02756 }
02757
02758 static int mov_read_close(AVFormatContext *s)
02759 {
02760 MOVContext *mov = s->priv_data;
02761 int i, j;
02762
02763 for (i = 0; i < s->nb_streams; i++) {
02764 AVStream *st = s->streams[i];
02765 MOVStreamContext *sc = st->priv_data;
02766
02767 av_freep(&sc->ctts_data);
02768 for (j = 0; j < sc->drefs_count; j++) {
02769 av_freep(&sc->drefs[j].path);
02770 av_freep(&sc->drefs[j].dir);
02771 }
02772 av_freep(&sc->drefs);
02773 if (sc->pb && sc->pb != s->pb)
02774 avio_close(sc->pb);
02775 }
02776
02777 if (mov->dv_demux) {
02778 for (i = 0; i < mov->dv_fctx->nb_streams; i++) {
02779 av_freep(&mov->dv_fctx->streams[i]->codec);
02780 av_freep(&mov->dv_fctx->streams[i]);
02781 }
02782 av_freep(&mov->dv_fctx);
02783 av_freep(&mov->dv_demux);
02784 }
02785
02786 av_freep(&mov->trex_data);
02787
02788 return 0;
02789 }
02790
02791 AVInputFormat ff_mov_demuxer = {
02792 .name = "mov,mp4,m4a,3gp,3g2,mj2",
02793 .long_name = NULL_IF_CONFIG_SMALL("QuickTime/MPEG-4/Motion JPEG 2000 format"),
02794 .priv_data_size = sizeof(MOVContext),
02795 .read_probe = mov_probe,
02796 .read_header = mov_read_header,
02797 .read_packet = mov_read_packet,
02798 .read_close = mov_read_close,
02799 .read_seek = mov_read_seek,
02800 };