/* * MOV demuxer * Copyright (c) 2001 Fabrice Bellard * Copyright (c) 2009 Baptiste Coudurier * * first version by Francois Revol * seek function by Gael Chardon * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include "libavutil/attributes.h" #include "libavutil/channel_layout.h" #include "libavutil/display.h" #include "libavutil/intreadwrite.h" #include "libavutil/intfloat.h" #include "libavutil/mathematics.h" #include "libavutil/time_internal.h" #include "libavutil/avstring.h" #include "libavutil/dict.h" #include "libavutil/opt.h" #include "libavutil/timecode.h" #include "libavcodec/ac3tab.h" #include "avformat.h" #include "internal.h" #include "avio_internal.h" #include "riff.h" #include "isom.h" #include "libavcodec/get_bits.h" #include "id3v1.h" #include "mov_chan.h" #include "replaygain.h" #if CONFIG_ZLIB #include #endif #include "qtpalette.h" #undef NDEBUG #include /* those functions parse an atom */ /* links atom IDs to parse functions */ typedef struct MOVParseTableEntry { uint32_t type; int (*parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom); } MOVParseTableEntry; static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom); static int mov_read_mfra(MOVContext *c, AVIOContext *f); static int mov_metadata_track_or_disc_number(MOVContext *c, AVIOContext *pb, unsigned len, const char *key) { char buf[16]; short current, total = 0; avio_rb16(pb); // unknown current = avio_rb16(pb); if (len >= 6) total = avio_rb16(pb); if (!total) snprintf(buf, sizeof(buf), "%d", current); else snprintf(buf, sizeof(buf), "%d/%d", current, total); c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED; av_dict_set(&c->fc->metadata, key, buf, 0); return 0; } static int mov_metadata_int8_bypass_padding(MOVContext *c, AVIOContext *pb, unsigned len, const char *key) { /* bypass padding bytes */ avio_r8(pb); avio_r8(pb); avio_r8(pb); c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED; av_dict_set_int(&c->fc->metadata, key, avio_r8(pb), 0); return 0; } static int mov_metadata_int8_no_padding(MOVContext *c, AVIOContext *pb, unsigned len, const char *key) { c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED; av_dict_set_int(&c->fc->metadata, key, avio_r8(pb), 0); return 0; } static int mov_metadata_gnre(MOVContext *c, AVIOContext *pb, unsigned len, const char *key) { short genre; avio_r8(pb); // unknown genre = avio_r8(pb); if (genre < 1 || genre > ID3v1_GENRE_MAX) return 0; c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED; av_dict_set(&c->fc->metadata, key, ff_id3v1_genre_str[genre-1], 0); return 0; } static const uint32_t mac_to_unicode[128] = { 0x00C4,0x00C5,0x00C7,0x00C9,0x00D1,0x00D6,0x00DC,0x00E1, 0x00E0,0x00E2,0x00E4,0x00E3,0x00E5,0x00E7,0x00E9,0x00E8, 0x00EA,0x00EB,0x00ED,0x00EC,0x00EE,0x00EF,0x00F1,0x00F3, 0x00F2,0x00F4,0x00F6,0x00F5,0x00FA,0x00F9,0x00FB,0x00FC, 0x2020,0x00B0,0x00A2,0x00A3,0x00A7,0x2022,0x00B6,0x00DF, 0x00AE,0x00A9,0x2122,0x00B4,0x00A8,0x2260,0x00C6,0x00D8, 0x221E,0x00B1,0x2264,0x2265,0x00A5,0x00B5,0x2202,0x2211, 0x220F,0x03C0,0x222B,0x00AA,0x00BA,0x03A9,0x00E6,0x00F8, 0x00BF,0x00A1,0x00AC,0x221A,0x0192,0x2248,0x2206,0x00AB, 0x00BB,0x2026,0x00A0,0x00C0,0x00C3,0x00D5,0x0152,0x0153, 0x2013,0x2014,0x201C,0x201D,0x2018,0x2019,0x00F7,0x25CA, 0x00FF,0x0178,0x2044,0x20AC,0x2039,0x203A,0xFB01,0xFB02, 0x2021,0x00B7,0x201A,0x201E,0x2030,0x00C2,0x00CA,0x00C1, 0x00CB,0x00C8,0x00CD,0x00CE,0x00CF,0x00CC,0x00D3,0x00D4, 0xF8FF,0x00D2,0x00DA,0x00DB,0x00D9,0x0131,0x02C6,0x02DC, 0x00AF,0x02D8,0x02D9,0x02DA,0x00B8,0x02DD,0x02DB,0x02C7, }; static int mov_read_mac_string(MOVContext *c, AVIOContext *pb, int len, char *dst, int dstlen) { char *p = dst; char *end = dst+dstlen-1; int i; for (i = 0; i < len; i++) { uint8_t t, c = avio_r8(pb); if (c < 0x80 && p < end) *p++ = c; else if (p < end) PUT_UTF8(mac_to_unicode[c-0x80], t, if (p < end) *p++ = t;); } *p = 0; return p - dst; } static int mov_read_covr(MOVContext *c, AVIOContext *pb, int type, int len) { AVPacket pkt; AVStream *st; MOVStreamContext *sc; enum AVCodecID id; int ret; switch (type) { case 0xd: id = AV_CODEC_ID_MJPEG; break; case 0xe: id = AV_CODEC_ID_PNG; break; case 0x1b: id = AV_CODEC_ID_BMP; break; default: av_log(c->fc, AV_LOG_WARNING, "Unknown cover type: 0x%x.\n", type); avio_skip(pb, len); return 0; } st = avformat_new_stream(c->fc, NULL); if (!st) return AVERROR(ENOMEM); sc = av_mallocz(sizeof(*sc)); if (!sc) return AVERROR(ENOMEM); st->priv_data = sc; ret = av_get_packet(pb, &pkt, len); if (ret < 0) return ret; st->disposition |= AV_DISPOSITION_ATTACHED_PIC; st->attached_pic = pkt; st->attached_pic.stream_index = st->index; st->attached_pic.flags |= AV_PKT_FLAG_KEY; st->codec->codec_type = AVMEDIA_TYPE_VIDEO; st->codec->codec_id = id; return 0; } static int mov_metadata_loci(MOVContext *c, AVIOContext *pb, unsigned len) { char language[4] = { 0 }; char buf[100]; uint16_t langcode = 0; double longitude, latitude; const char *key = "location"; if (len < 4 + 2 + 1 + 1 + 4 + 4 + 4) return AVERROR_INVALIDDATA; avio_skip(pb, 4); // version+flags langcode = avio_rb16(pb); ff_mov_lang_to_iso639(langcode, language); len -= 6; len -= avio_get_str(pb, len, buf, sizeof(buf)); // place name if (len < 1) return AVERROR_INVALIDDATA; avio_skip(pb, 1); // role len -= 1; if (len < 14) return AVERROR_INVALIDDATA; longitude = ((int32_t) avio_rb32(pb)) / (float) (1 << 16); latitude = ((int32_t) avio_rb32(pb)) / (float) (1 << 16); // Try to output in the same format as the ?xyz field snprintf(buf, sizeof(buf), "%+08.4f%+09.4f/", latitude, longitude); if (*language && strcmp(language, "und")) { char key2[16]; snprintf(key2, sizeof(key2), "%s-%s", key, language); av_dict_set(&c->fc->metadata, key2, buf, 0); } c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED; return av_dict_set(&c->fc->metadata, key, buf, 0); } static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom) { char tmp_key[5]; char key2[32], language[4] = {0}; char *str = NULL; const char *key = NULL; uint16_t langcode = 0; uint32_t data_type = 0, str_size, str_size_alloc; int (*parse)(MOVContext*, AVIOContext*, unsigned, const char*) = NULL; int raw = 0; switch (atom.type) { case MKTAG( '@','P','R','M'): key = "premiere_version"; raw = 1; break; case MKTAG( '@','P','R','Q'): key = "quicktime_version"; raw = 1; break; case MKTAG( 'X','M','P','_'): if (c->export_xmp) { key = "xmp"; raw = 1; } break; case MKTAG( 'a','A','R','T'): key = "album_artist"; break; case MKTAG( 'a','k','I','D'): key = "account_type"; parse = mov_metadata_int8_no_padding; break; case MKTAG( 'a','p','I','D'): key = "account_id"; break; case MKTAG( 'c','a','t','g'): key = "category"; break; case MKTAG( 'c','p','i','l'): key = "compilation"; parse = mov_metadata_int8_no_padding; break; case MKTAG( 'c','p','r','t'): key = "copyright"; break; case MKTAG( 'd','e','s','c'): key = "description"; break; case MKTAG( 'd','i','s','k'): key = "disc"; parse = mov_metadata_track_or_disc_number; break; case MKTAG( 'e','g','i','d'): key = "episode_uid"; parse = mov_metadata_int8_no_padding; break; case MKTAG( 'g','n','r','e'): key = "genre"; parse = mov_metadata_gnre; break; case MKTAG( 'h','d','v','d'): key = "hd_video"; parse = mov_metadata_int8_no_padding; break; case MKTAG( 'k','e','y','w'): key = "keywords"; break; case MKTAG( 'l','d','e','s'): key = "synopsis"; break; case MKTAG( 'l','o','c','i'): return mov_metadata_loci(c, pb, atom.size); case MKTAG( 'p','c','s','t'): key = "podcast"; parse = mov_metadata_int8_no_padding; break; case MKTAG( 'p','g','a','p'): key = "gapless_playback"; parse = mov_metadata_int8_no_padding; break; case MKTAG( 'p','u','r','d'): key = "purchase_date"; break; case MKTAG( 'r','t','n','g'): key = "rating"; parse = mov_metadata_int8_no_padding; break; case MKTAG( 's','o','a','a'): key = "sort_album_artist"; break; case MKTAG( 's','o','a','l'): key = "sort_album"; break; case MKTAG( 's','o','a','r'): key = "sort_artist"; break; case MKTAG( 's','o','c','o'): key = "sort_composer"; break; case MKTAG( 's','o','n','m'): key = "sort_name"; break; case MKTAG( 's','o','s','n'): key = "sort_show"; break; case MKTAG( 's','t','i','k'): key = "media_type"; parse = mov_metadata_int8_no_padding; break; case MKTAG( 't','r','k','n'): key = "track"; parse = mov_metadata_track_or_disc_number; break; case MKTAG( 't','v','e','n'): key = "episode_id"; break; case MKTAG( 't','v','e','s'): key = "episode_sort"; parse = mov_metadata_int8_bypass_padding; break; case MKTAG( 't','v','n','n'): key = "network"; break; case MKTAG( 't','v','s','h'): key = "show"; break; case MKTAG( 't','v','s','n'): key = "season_number"; parse = mov_metadata_int8_bypass_padding; break; case MKTAG(0xa9,'A','R','T'): key = "artist"; break; case MKTAG(0xa9,'P','R','D'): key = "producer"; break; case MKTAG(0xa9,'a','l','b'): key = "album"; break; case MKTAG(0xa9,'a','u','t'): key = "artist"; break; case MKTAG(0xa9,'c','h','p'): key = "chapter"; break; case MKTAG(0xa9,'c','m','t'): key = "comment"; break; case MKTAG(0xa9,'c','o','m'): key = "composer"; break; case MKTAG(0xa9,'c','p','y'): key = "copyright"; break; case MKTAG(0xa9,'d','a','y'): key = "date"; break; case MKTAG(0xa9,'d','i','r'): key = "director"; break; case MKTAG(0xa9,'d','i','s'): key = "disclaimer"; break; case MKTAG(0xa9,'e','d','1'): key = "edit_date"; break; case MKTAG(0xa9,'e','n','c'): key = "encoder"; break; case MKTAG(0xa9,'f','m','t'): key = "original_format"; break; case MKTAG(0xa9,'g','e','n'): key = "genre"; break; case MKTAG(0xa9,'g','r','p'): key = "grouping"; break; case MKTAG(0xa9,'h','s','t'): key = "host_computer"; break; case MKTAG(0xa9,'i','n','f'): key = "comment"; break; case MKTAG(0xa9,'l','y','r'): key = "lyrics"; break; case MKTAG(0xa9,'m','a','k'): key = "make"; break; case MKTAG(0xa9,'m','o','d'): key = "model"; break; case MKTAG(0xa9,'n','a','m'): key = "title"; break; case MKTAG(0xa9,'o','p','e'): key = "original_artist"; break; case MKTAG(0xa9,'p','r','d'): key = "producer"; break; case MKTAG(0xa9,'p','r','f'): key = "performers"; break; case MKTAG(0xa9,'r','e','q'): key = "playback_requirements"; break; case MKTAG(0xa9,'s','r','c'): key = "original_source"; break; case MKTAG(0xa9,'s','t','3'): key = "subtitle"; break; case MKTAG(0xa9,'s','w','r'): key = "encoder"; break; case MKTAG(0xa9,'t','o','o'): key = "encoder"; break; case MKTAG(0xa9,'t','r','k'): key = "track"; break; case MKTAG(0xa9,'u','r','l'): key = "URL"; break; case MKTAG(0xa9,'w','r','n'): key = "warning"; break; case MKTAG(0xa9,'w','r','t'): key = "composer"; break; case MKTAG(0xa9,'x','y','z'): key = "location"; break; } if (c->itunes_metadata && atom.size > 8) { int data_size = avio_rb32(pb); int tag = avio_rl32(pb); if (tag == MKTAG('d','a','t','a')) { data_type = avio_rb32(pb); // type avio_rb32(pb); // unknown str_size = data_size - 16; atom.size -= 16; if (atom.type == MKTAG('c', 'o', 'v', 'r')) { int ret = mov_read_covr(c, pb, data_type, str_size); if (ret < 0) { av_log(c->fc, AV_LOG_ERROR, "Error parsing cover art.\n"); } return ret; } } else return 0; } else if (atom.size > 4 && key && !c->itunes_metadata && !raw) { str_size = avio_rb16(pb); // string length langcode = avio_rb16(pb); ff_mov_lang_to_iso639(langcode, language); atom.size -= 4; } else str_size = atom.size; if (c->export_all && !key) { snprintf(tmp_key, 5, "%.4s", (char*)&atom.type); key = tmp_key; } if (!key) return 0; if (atom.size < 0) return AVERROR_INVALIDDATA; // worst-case requirement for output string in case of utf8 coded input str_size_alloc = (raw ? str_size : str_size * 2) + 1; str = av_malloc(str_size_alloc); if (!str) return AVERROR(ENOMEM); if (parse) parse(c, pb, str_size, key); else { if (!raw && (data_type == 3 || (data_type == 0 && (langcode < 0x400 || langcode == 0x7fff)))) { // MAC Encoded mov_read_mac_string(c, pb, str_size, str, str_size_alloc); } else { int ret = avio_read(pb, str, str_size); if (ret != str_size) { av_freep(&str); return ret < 0 ? ret : AVERROR_INVALIDDATA; } str[str_size] = 0; } c->fc->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED; av_dict_set(&c->fc->metadata, key, str, 0); if (*language && strcmp(language, "und")) { snprintf(key2, sizeof(key2), "%s-%s", key, language); av_dict_set(&c->fc->metadata, key2, str, 0); } } av_dlog(c->fc, "lang \"%3s\" ", language); av_dlog(c->fc, "tag \"%s\" value \"%s\" atom \"%.4s\" %d %"PRId64"\n", key, str, (char*)&atom.type, str_size_alloc, atom.size); av_freep(&str); return 0; } static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom) { int64_t start; int i, nb_chapters, str_len, version; char str[256+1]; if ((atom.size -= 5) < 0) return 0; version = avio_r8(pb); avio_rb24(pb); if (version) avio_rb32(pb); // ??? nb_chapters = avio_r8(pb); for (i = 0; i < nb_chapters; i++) { if (atom.size < 9) return 0; start = avio_rb64(pb); str_len = avio_r8(pb); if ((atom.size -= 9+str_len) < 0) return 0; avio_read(pb, str, str_len); str[str_len] = 0; avpriv_new_chapter(c->fc, i, (AVRational){1,10000000}, start, AV_NOPTS_VALUE, str); } return 0; } #define MIN_DATA_ENTRY_BOX_SIZE 12 static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom) { AVStream *st; MOVStreamContext *sc; int entries, i, j; if (c->fc->nb_streams < 1) return 0; st = c->fc->streams[c->fc->nb_streams-1]; sc = st->priv_data; avio_rb32(pb); // version + flags entries = avio_rb32(pb); if (entries > (atom.size - 1) / MIN_DATA_ENTRY_BOX_SIZE + 1 || entries >= UINT_MAX / sizeof(*sc->drefs)) return AVERROR_INVALIDDATA; av_free(sc->drefs); sc->drefs_count = 0; sc->drefs = av_mallocz(entries * sizeof(*sc->drefs)); if (!sc->drefs) return AVERROR(ENOMEM); sc->drefs_count = entries; for (i = 0; i < sc->drefs_count; i++) { MOVDref *dref = &sc->drefs[i]; uint32_t size = avio_rb32(pb); int64_t next = avio_tell(pb) + size - 4; if (size < 12) return AVERROR_INVALIDDATA; dref->type = avio_rl32(pb); avio_rb32(pb); // version + flags av_dlog(c->fc, "type %.4s size %d\n", (char*)&dref->type, size); if (dref->type == MKTAG('a','l','i','s') && size > 150) { /* macintosh alias record */ uint16_t volume_len, len; int16_t type; avio_skip(pb, 10); volume_len = avio_r8(pb); volume_len = FFMIN(volume_len, 27); avio_read(pb, dref->volume, 27); dref->volume[volume_len] = 0; av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", dref->volume, volume_len); avio_skip(pb, 12); len = avio_r8(pb); len = FFMIN(len, 63); avio_read(pb, dref->filename, 63); dref->filename[len] = 0; av_log(c->fc, AV_LOG_DEBUG, "filename %s, len %d\n", dref->filename, len); avio_skip(pb, 16); /* read next level up_from_alias/down_to_target */ dref->nlvl_from = avio_rb16(pb); dref->nlvl_to = avio_rb16(pb); av_log(c->fc, AV_LOG_DEBUG, "nlvl from %d, nlvl to %d\n", dref->nlvl_from, dref->nlvl_to); avio_skip(pb, 16); for (type = 0; type != -1 && avio_tell(pb) < next; ) { if(avio_feof(pb)) return AVERROR_EOF; type = avio_rb16(pb); len = avio_rb16(pb); av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len); if (len&1) len += 1; if (type == 2) { // absolute path av_free(dref->path); dref->path = av_mallocz(len+1); if (!dref->path) return AVERROR(ENOMEM); avio_read(pb, dref->path, len); if (len > volume_len && !strncmp(dref->path, dref->volume, volume_len)) { len -= volume_len; memmove(dref->path, dref->path+volume_len, len); dref->path[len] = 0; } for (j = 0; j < len; j++) if (dref->path[j] == ':') dref->path[j] = '/'; av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path); } else if (type == 0) { // directory name av_free(dref->dir); dref->dir = av_malloc(len+1); if (!dref->dir) return AVERROR(ENOMEM); if (avio_read(pb, dref->dir, len) != len) return AVERROR_INVALIDDATA; dref->dir[len] = 0; for (j = 0; j < len; j++) if (dref->dir[j] == ':') dref->dir[j] = '/'; av_log(c->fc, AV_LOG_DEBUG, "dir %s\n", dref->dir); } else avio_skip(pb, len); } } avio_seek(pb, next, SEEK_SET); } return 0; } static int mov_read_hdlr(MOVContext *c, AVIOContext *pb, MOVAtom atom) { AVStream *st; uint32_t type; uint32_t av_unused ctype; int title_size; char *title_str; if (c->fc->nb_streams < 1) // meta before first trak return 0; st = c->fc->streams[c->fc->nb_streams-1]; avio_r8(pb); /* version */ avio_rb24(pb); /* flags */ /* component type */ ctype = avio_rl32(pb); type = avio_rl32(pb); /* component subtype */ av_dlog(c->fc, "ctype= %.4s (0x%08x)\n", (char*)&ctype, ctype); av_dlog(c->fc, "stype= %.4s\n", (char*)&type); if (type == MKTAG('v','i','d','e')) st->codec->codec_type = AVMEDIA_TYPE_VIDEO; else if (type == MKTAG('s','o','u','n')) st->codec->codec_type = AVMEDIA_TYPE_AUDIO; else if (type == MKTAG('m','1','a',' ')) st->codec->codec_id = AV_CODEC_ID_MP2; else if ((type == MKTAG('s','u','b','p')) || (type == MKTAG('c','l','c','p'))) st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE; avio_rb32(pb); /* component manufacture */ avio_rb32(pb); /* component flags */ avio_rb32(pb); /* component flags mask */ title_size = atom.size - 24; if (title_size > 0) { title_str = av_malloc(title_size + 1); /* Add null terminator */ if (!title_str) return AVERROR(ENOMEM); avio_read(pb, title_str, title_size); title_str[title_size] = 0; if (title_str[0]) av_dict_set(&st->metadata, "handler_name", title_str + (!c->isom && title_str[0] == title_size - 1), 0); av_freep(&title_str); } return 0; } int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb) { AVStream *st; int tag; if (fc->nb_streams < 1) return 0; st = fc->streams[fc->nb_streams-1]; avio_rb32(pb); /* version + flags */ ff_mp4_read_descr(fc, pb, &tag); if (tag == MP4ESDescrTag) { ff_mp4_parse_es_descr(pb, NULL); } else avio_rb16(pb); /* ID */ ff_mp4_read_descr(fc, pb, &tag); if (tag == MP4DecConfigDescrTag) ff_mp4_read_dec_config_descr(fc, st, pb); return 0; } static int mov_read_esds(MOVContext *c, AVIOContext *pb, MOVAtom atom) { return ff_mov_read_esds(c->fc, pb); } static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom) { AVStream *st; int ac3info, acmod, lfeon, bsmod; if (c->fc->nb_streams < 1) return 0; st = c->fc->streams[c->fc->nb_streams-1]; ac3info = avio_rb24(pb); bsmod = (ac3info >> 14) & 0x7; acmod = (ac3info >> 11) & 0x7; lfeon = (ac3info >> 10) & 0x1; st->codec->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon; st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod]; if (lfeon) st->codec->channel_layout |= AV_CH_LOW_FREQUENCY; st->codec->audio_service_type = bsmod; if (st->codec->channels > 1 && bsmod == 0x7) st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE; return 0; } static int mov_read_dec3(MOVContext *c, AVIOContext *pb, MOVAtom atom) { AVStream *st; int eac3info, acmod, lfeon, bsmod; if (c->fc->nb_streams < 1) return 0; st = c->fc->streams[c->fc->nb_streams-1]; /* No need to parse fields for additional independent substreams and its * associated dependent substreams since libavcodec's E-AC-3 decoder * does not support them yet. */ avio_rb16(pb); /* data_rate and num_ind_sub */ eac3info = avio_rb24(pb); bsmod = (eac3info >> 12) & 0x1f; acmod = (eac3info >> 9) & 0x7; lfeon = (eac3info >> 8) & 0x1; st->codec->channel_layout = avpriv_ac3_channel_layout_tab[acmod]; if (lfeon) st->codec->channel_layout |= AV_CH_LOW_FREQUENCY; st->codec->channels = av_get_channel_layout_nb_channels(st->codec->channel_layout); st->codec->audio_service_type = bsmod; if (st->codec->channels > 1 && bsmod == 0x7) st->codec->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE; return 0; } static int mov_read_chan(MOVContext *c, AVIOContext *pb, MOVAtom atom) { AVStream *st; if (c->fc->nb_streams < 1) return 0; st = c->fc->streams[c->fc->nb_streams-1]; if (atom.size < 16) return 0; /* skip version and flags */ avio_skip(pb, 4); ff_mov_read_chan(c->fc, pb, st, atom.size - 4); return 0; } static int mov_read_wfex(MOVContext *c, AVIOContext *pb, MOVAtom atom) { AVStream *st; int ret; if (c->fc->nb_streams < 1) return 0; st = c->fc->streams[c->fc->nb_streams-1]; if ((ret = ff_get_wav_header(pb, st->codec, atom.size, 0)) < 0) av_log(c->fc, AV_LOG_WARNING, "get_wav_header failed\n"); return ret; } static int mov_read_pasp(MOVContext *c, AVIOContext *pb, MOVAtom atom) { const int num = avio_rb32(pb); const int den = avio_rb32(pb); AVStream *st; if (c->fc->nb_streams < 1) return 0; st = c->fc->streams[c->fc->nb_streams-1]; if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default (den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) { av_log(c->fc, AV_LOG_WARNING, "sample aspect ratio already set to %d:%d, ignoring 'pasp' atom (%d:%d)\n", st->sample_aspect_ratio.num, st->sample_aspect_ratio.den, num, den); } else if (den != 0) { st->sample_aspect_ratio.num = num; st->sample_aspect_ratio.den = den; } return 0; } /* this atom contains actual media data */ static int mov_read_mdat(MOVContext *c, AVIOContext *pb, MOVAtom atom) { if (atom.size == 0) /* wrong one (MP4) */ return 0; c->found_mdat=1; return 0; /* now go for moov */ } /* read major brand, minor version and compatible brands and store them as metadata */ static int mov_read_ftyp(MOVContext *c, AVIOContext *pb, MOVAtom atom) { uint32_t minor_ver; int comp_brand_size; char* comp_brands_str; uint8_t type[5] = {0}; avio_read(pb, type, 4); if (strcmp(type, "qt ")) c->isom = 1; av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type); av_dict_set(&c->fc->metadata, "major_brand", type, 0); minor_ver = avio_rb32(pb); /* minor version */ av_dict_set_int(&c->fc->metadata, "minor_version", minor_ver, 0); comp_brand_size = atom.size - 8; if (comp_brand_size < 0) return AVERROR_INVALIDDATA; comp_brands_str = av_malloc(comp_brand_size + 1); /* Add null terminator */ if (!comp_brands_str) return AVERROR(ENOMEM); avio_read(pb, comp_brands_str, comp_brand_size); comp_brands_str[comp_brand_size] = 0; av_dict_set(&c->fc->metadata, "compatible_brands", comp_brands_str, 0); av_freep(&comp_brands_str); return 0; } /* this atom should contain all header atoms */ static int mov_read_moov(MOVContext *c, AVIOContext *pb, MOVAtom atom) { int ret; if (c->found_moov) { av_log(c->fc, AV_LOG_WARNING, "Found duplicated MOOV Atom. Skipped it\n"); avio_skip(pb, atom.size); return 0; } if ((ret = mov_read_default(c, pb, atom)) < 0) return ret; /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */ /* so we don't parse the whole file if over a network */ c->found_moov=1; return 0; /* now go for mdat */ } static int mov_read_moof(MOVContext *c, AVIOContext *pb, MOVAtom atom) { if (!c->has_looked_for_mfra && c->use_mfra_for > 0) { c->has_looked_for_mfra = 1; if (pb->seekable) { int ret; av_log(c->fc, AV_LOG_VERBOSE, "stream has moof boxes, will look " "for a mfra\n"); if ((ret = mov_read_mfra(c, pb)) < 0) { av_log(c->fc, AV_LOG_VERBOSE, "found a moof box but failed to " "read the mfra (may be a live ismv)\n"); } } else { av_log(c->fc, AV_LOG_VERBOSE, "found a moof box but stream is not " "seekable, can not look for mfra\n"); } } c->fragment.moof_offset = c->fragment.implicit_offset = avio_tell(pb) - 8; av_dlog(c->fc, "moof offset %"PRIx64"\n", c->fragment.moof_offset); return mov_read_default(c, pb, atom); } static void mov_metadata_creation_time(AVDictionary **metadata, int64_t time) { char buffer[32]; if (time) { struct tm *ptm, tmbuf; time_t timet; if(time >= 2082844800) time -= 2082844800; /* seconds between 1904-01-01 and Epoch */ timet = time; ptm = gmtime_r(&timet, &tmbuf); if (!ptm) return; if (strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", ptm)) av_dict_set(metadata, "creation_time", buffer, 0); } } static int mov_read_mdhd(MOVContext *c, AVIOContext *pb, MOVAtom atom) { AVStream *st; MOVStreamContext *sc; int version; char language[4] = {0}; unsigned lang; int64_t creation_time; if (c->fc->nb_streams < 1) return 0; st = c->fc->streams[c->fc->nb_streams-1]; sc = st->priv_data; if (sc->time_scale) { av_log(c->fc, AV_LOG_ERROR, "Multiple mdhd?\n"); return AVERROR_INVALIDDATA; } version = avio_r8(pb); if (version > 1) { avpriv_request_sample(c->fc, "Version %d", version); return AVERROR_PATCHWELCOME; } avio_rb24(pb); /* flags */ if (version == 1) { creation_time = avio_rb64(pb); avio_rb64(pb); } else { creation_time = avio_rb32(pb); avio_rb32(pb); /* modification time */ } mov_metadata_creation_time(&st->metadata, creation_time); sc->time_scale = avio_rb32(pb); st->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */ lang = avio_rb16(pb); /* language */ if (ff_mov_lang_to_iso639(lang, language)) av_dict_set(&st->metadata, "language", language, 0); avio_rb16(pb); /* quality */ return 0; } static int mov_read_mvhd(MOVContext *c, AVIOContext *pb, MOVAtom atom) { int64_t creation_time; int version = avio_r8(pb); /* version */ avio_rb24(pb); /* flags */ if (version == 1) { creation_time = avio_rb64(pb); avio_rb64(pb); } else { creation_time = avio_rb32(pb); avio_rb32(pb); /* modification time */ } mov_metadata_creation_time(&c->fc->metadata, creation_time); c->time_scale = avio_rb32(pb); /* time scale */ av_dlog(c->fc, "time scale = %i\n", c->time_scale); c->duration = (version == 1) ? avio_rb64(pb) : avio_rb32(pb); /* duration */ // set the AVCodecContext duration because the duration of individual tracks // may be inaccurate if (c->time_scale > 0 && !c->trex_data) c->fc->duration = av_rescale(c->duration, AV_TIME_BASE, c->time_scale); avio_rb32(pb); /* preferred scale */ avio_rb16(pb); /* preferred volume */ avio_skip(pb, 10); /* reserved */ avio_skip(pb, 36); /* display matrix */ avio_rb32(pb); /* preview time */ avio_rb32(pb); /* preview duration */ avio_rb32(pb); /* poster time */ avio_rb32(pb); /* selection time */ avio_rb32(pb); /* selection duration */ avio_rb32(pb); /* current time */ avio_rb32(pb); /* next track ID */ return 0; } static int mov_read_enda(MOVContext *c, AVIOContext *pb, MOVAtom atom) { AVStream *st; int little_endian; if (c->fc->nb_streams < 1) return 0; st = c->fc->streams[c->fc->nb_streams-1]; little_endian = avio_rb16(pb) & 0xFF; av_dlog(c->fc, "enda %d\n", little_endian); if (little_endian == 1) { switch (st->codec->codec_id) { case AV_CODEC_ID_PCM_S24BE: st->codec->codec_id = AV_CODEC_ID_PCM_S24LE; break; case AV_CODEC_ID_PCM_S32BE: st->codec->codec_id = AV_CODEC_ID_PCM_S32LE; break; case AV_CODEC_ID_PCM_F32BE: st->codec->codec_id = AV_CODEC_ID_PCM_F32LE; break; case AV_CODEC_ID_PCM_F64BE: st->codec->codec_id = AV_CODEC_ID_PCM_F64LE; break; default: break; } } return 0; } static int mov_read_colr(MOVContext *c, AVIOContext *pb, MOVAtom atom) { AVStream *st; char color_parameter_type[5] = { 0 }; int color_primaries, color_trc, color_matrix; if (c->fc->nb_streams < 1) return 0; st = c->fc->streams[c->fc->nb_streams - 1]; avio_read(pb, color_parameter_type, 4); if (strncmp(color_parameter_type, "nclx", 4) && strncmp(color_parameter_type, "nclc", 4)) { av_log(c->fc, AV_LOG_WARNING, "unsupported color_parameter_type %s\n", color_parameter_type); return 0; } color_primaries = avio_rb16(pb); color_trc = avio_rb16(pb); color_matrix = avio_rb16(pb); av_dlog(c->fc, "%s: pri %d trc %d matrix %d", color_parameter_type, color_primaries, color_trc, color_matrix); if (c->isom) { uint8_t color_range = avio_r8(pb) >> 7; av_dlog(c->fc, " full %"PRIu8"", color_range); if (color_range) st->codec->color_range = AVCOL_RANGE_JPEG; else st->codec->color_range = AVCOL_RANGE_MPEG; /* 14496-12 references JPEG XR specs (rather than the more complete * 23001-8) so some adjusting is required */ if (color_primaries >= AVCOL_PRI_FILM) color_primaries = AVCOL_PRI_UNSPECIFIED; if ((color_trc >= AVCOL_TRC_LINEAR && color_trc <= AVCOL_TRC_LOG_SQRT) || color_trc >= AVCOL_TRC_BT2020_10) color_trc = AVCOL_TRC_UNSPECIFIED; if (color_matrix >= AVCOL_SPC_BT2020_NCL) color_matrix = AVCOL_SPC_UNSPECIFIED; st->codec->color_primaries = color_primaries; st->codec->color_trc = color_trc; st->codec->colorspace = color_matrix; } else { /* color primaries, Table 4-4 */ switch (color_primaries) { case 1: st->codec->color_primaries = AVCOL_PRI_BT709; break; case 5: st->codec->color_primaries = AVCOL_PRI_SMPTE170M; break; case 6: st->codec->color_primaries = AVCOL_PRI_SMPTE240M; break; } /* color transfer, Table 4-5 */ switch (color_trc) { case 1: st->codec->color_trc = AVCOL_TRC_BT709; break; case 7: st->codec->color_trc = AVCOL_TRC_SMPTE240M; break; } /* color matrix, Table 4-6 */ switch (color_matrix) { case 1: st->codec->colorspace = AVCOL_SPC_BT709; break; case 6: st->codec->colorspace = AVCOL_SPC_BT470BG; break; case 7: st->codec->colorspace = AVCOL_SPC_SMPTE240M; break; } } av_dlog(c->fc, "\n"); return 0; } static int mov_read_fiel(MOVContext *c, AVIOContext *pb, MOVAtom atom) { AVStream *st; unsigned mov_field_order; enum AVFieldOrder decoded_field_order = AV_FIELD_UNKNOWN; if (c->fc->nb_streams < 1) // will happen with jp2 files return 0; st = c->fc->streams[c->fc->nb_streams-1]; if (atom.size < 2) return AVERROR_INVALIDDATA; mov_field_order = avio_rb16(pb); if ((mov_field_order & 0xFF00) == 0x0100) decoded_field_order = AV_FIELD_PROGRESSIVE; else if ((mov_field_order & 0xFF00) == 0x0200) { switch (mov_field_order & 0xFF) { case 0x01: decoded_field_order = AV_FIELD_TT; break; case 0x06: decoded_field_order = AV_FIELD_BB; break; case 0x09: decoded_field_order = AV_FIELD_TB; break; case 0x0E: decoded_field_order = AV_FIELD_BT; break; } } if (decoded_field_order == AV_FIELD_UNKNOWN && mov_field_order) { av_log(NULL, AV_LOG_ERROR, "Unknown MOV field order 0x%04x\n", mov_field_order); } st->codec->field_order = decoded_field_order; return 0; } /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */ static int mov_read_extradata(MOVContext *c, AVIOContext *pb, MOVAtom atom, enum AVCodecID codec_id) { AVStream *st; uint64_t size; uint8_t *buf; int err; if (c->fc->nb_streams < 1) // will happen with jp2 files return 0; st= c->fc->streams[c->fc->nb_streams-1]; if (st->codec->codec_id != codec_id) return 0; /* unexpected codec_id - don't mess with extradata */ size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE; if (size > INT_MAX || (uint64_t)atom.size > INT_MAX) return AVERROR_INVALIDDATA; if ((err = av_reallocp(&st->codec->extradata, size)) < 0) { st->codec->extradata_size = 0; return err; } buf = st->codec->extradata + st->codec->extradata_size; st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE; AV_WB32( buf , atom.size + 8); AV_WL32( buf + 4, atom.type); err = avio_read(pb, buf + 8, atom.size); if (err < 0) { return err; } else if (err < atom.size) { av_log(c->fc, AV_LOG_WARNING, "truncated extradata\n"); st->codec->extradata_size -= atom.size - err; } memset(buf + 8 + err, 0, FF_INPUT_BUFFER_PADDING_SIZE); return 0; } /* wrapper functions for reading ALAC/AVS/MJPEG/MJPEG2000 extradata atoms only for those codecs */ static int mov_read_alac(MOVContext *c, AVIOContext *pb, MOVAtom atom) { return mov_read_extradata(c, pb, atom, AV_CODEC_ID_ALAC); } static int mov_read_avss(MOVContext *c, AVIOContext *pb, MOVAtom atom) { return mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVS); } static int mov_read_jp2h(MOVContext *c, AVIOContext *pb, MOVAtom atom) { return mov_read_extradata(c, pb, atom, AV_CODEC_ID_JPEG2000); } static int mov_read_avid(MOVContext *c, AVIOContext *pb, MOVAtom atom) { int ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVUI); if(ret == 0) ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_DNXHD); return ret; } static int mov_read_targa_y216(MOVContext *c, AVIOContext *pb, MOVAtom atom) { int ret = mov_read_extradata(c, pb, atom, AV_CODEC_ID_TARGA_Y216); if (!ret && c->fc->nb_streams >= 1) { AVCodecContext *avctx = c->fc->streams[c->fc->nb_streams-1]->codec; if (avctx->extradata_size >= 40) { avctx->height = AV_RB16(&avctx->extradata[36]); avctx->width = AV_RB16(&avctx->extradata[38]); } } return ret; } static int mov_read_ares(MOVContext *c, AVIOContext *pb, MOVAtom atom) { if (c->fc->nb_streams >= 1) { AVCodecContext *codec = c->fc->streams[c->fc->nb_streams-1]->codec; if (codec->codec_tag == MKTAG('A', 'V', 'i', 'n') && codec->codec_id == AV_CODEC_ID_H264 && atom.size > 11) { avio_skip(pb, 10); /* For AVID AVCI50, force width of 1440 to be able to select the correct SPS and PPS */ if (avio_rb16(pb) == 0xd4d) codec->width = 1440; return 0; } } return mov_read_avid(c, pb, atom); } static int mov_read_svq3(MOVContext *c, AVIOContext *pb, MOVAtom atom) { return mov_read_extradata(c, pb, atom, AV_CODEC_ID_SVQ3); } static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom) { AVStream *st; if (c->fc->nb_streams < 1) return 0; st = c->fc->streams[c->fc->nb_streams-1]; if ((uint64_t)atom.size > (1<<30)) return AVERROR_INVALIDDATA; if (st->codec->codec_id == AV_CODEC_ID_QDM2 || st->codec->codec_id == AV_CODEC_ID_QDMC || st->codec->codec_id == AV_CODEC_ID_SPEEX) { // pass all frma atom to codec, needed at least for QDMC and QDM2 av_free(st->codec->extradata); if (ff_get_extradata(st->codec, pb, atom.size) < 0) return AVERROR(ENOMEM); } else if (atom.size > 8) { /* to read frma, esds atoms */ int ret; if ((ret = mov_read_default(c, pb, atom)) < 0) return ret; } else avio_skip(pb, atom.size); return 0; } /** * This function reads atom content and puts data in extradata without tag * nor size unlike mov_read_extradata. */ static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom) { AVStream *st; if (c->fc->nb_streams < 1) return 0; st = c->fc->streams[c->fc->nb_streams-1]; if ((uint64_t)atom.size > (1<<30)) return AVERROR_INVALIDDATA; if (atom.size >= 10) { // Broken files created by legacy versions of libavformat will // wrap a whole fiel atom inside of a glbl atom. unsigned size = avio_rb32(pb); unsigned type = avio_rl32(pb); avio_seek(pb, -8, SEEK_CUR); if (type == MKTAG('f','i','e','l') && size == atom.size) return mov_read_default(c, pb, atom); } if (st->codec->extradata_size > 1 && st->codec->extradata) { av_log(c, AV_LOG_WARNING, "ignoring multiple glbl\n"); return 0; } av_free(st->codec->extradata); if (ff_get_extradata(st->codec, pb, atom.size) < 0) return AVERROR(ENOMEM); return 0; } static int mov_read_dvc1(MOVContext *c, AVIOContext *pb, MOVAtom atom) { AVStream *st; uint8_t profile_level; int ret; if (c->fc->nb_streams < 1) return 0; st = c->fc->streams[c->fc->nb_streams-1]; if (atom.size >= (1<<28) || atom.size < 7) return AVERROR_INVALIDDATA; profile_level = avio_r8(pb); if ((profile_level & 0xf0) != 0xc0) return 0; avio_seek(pb, 6, SEEK_CUR); av_free(st->codec->extradata); if ((ret = ff_get_extradata(st->codec, pb, atom.size - 7)) < 0) return ret; return 0; } /** * An strf atom is a BITMAPINFOHEADER struct. This struct is 40 bytes itself, * but can have extradata appended at the end after the 40 bytes belonging * to the struct. */ static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom) { AVStream *st; if (c->fc->nb_streams < 1) return 0; if (atom.size <= 40) return 0; st = c->fc->streams[c->fc->nb_streams-1]; if ((uint64_t)atom.size > (1<<30)) return AVERROR_INVALIDDATA; avio_skip(pb, 40); av_free(st->codec->extradata); if (ff_get_extradata(st->codec, pb, atom.size - 40) < 0) return AVERROR(ENOMEM); return 0; } static int mov_read_stco(MOVContext *c, AVIOContext *pb, MOVAtom atom) { AVStream *st; MOVStreamContext *sc; unsigned int i, entries; if (c->fc->nb_streams < 1) return 0; st = c->fc->streams[c->fc->nb_streams-1]; sc = st->priv_data; avio_r8(pb); /* version */ avio_rb24(pb); /* flags */ entries = avio_rb32(pb); if (!entries) return 0; if (sc->chunk_offsets) av_log(c->fc, AV_LOG_WARNING, "Duplicated STCO atom\n"); av_free(sc->chunk_offsets); sc->chunk_count = 0; sc->chunk_offsets = av_malloc_array(entries, sizeof(*sc->chunk_offsets)); if (!sc->chunk_offsets) return AVERROR(ENOMEM); sc->chunk_count = entries; if (atom.type == MKTAG('s','t','c','o')) for (i = 0; i < entries && !pb->eof_reached; i++) sc->chunk_offsets[i] = avio_rb32(pb); else if (atom.type == MKTAG('c','o','6','4')) for (i = 0; i < entries && !pb->eof_reached; i++) sc->chunk_offsets[i] = avio_rb64(pb); else return AVERROR_INVALIDDATA; sc->chunk_count = i; if (pb->eof_reached) return AVERROR_EOF; return 0; } /** * Compute codec id for 'lpcm' tag. * See CoreAudioTypes and AudioStreamBasicDescription at Apple. */ enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags) { /* lpcm flags: * 0x1 = float * 0x2 = big-endian * 0x4 = signed */ return ff_get_pcm_codec_id(bps, flags & 1, flags & 2, flags & 4 ? -1 : 0); } static int mov_codec_id(AVStream *st, uint32_t format) { int id = ff_codec_get_id(ff_codec_movaudio_tags, format); if (id <= 0 && ((format & 0xFFFF) == 'm' + ('s' << 8) || (format & 0xFFFF) == 'T' + ('S' << 8))) id = ff_codec_get_id(ff_codec_wav_tags, av_bswap32(format) & 0xFFFF); if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO && id > 0) { st->codec->codec_type = AVMEDIA_TYPE_AUDIO; } else if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO && /* skip old asf mpeg4 tag */ format && format != MKTAG('m','p','4','s')) { id = ff_codec_get_id(ff_codec_movvideo_tags, format); if (id <= 0) id = ff_codec_get_id(ff_codec_bmp_tags, format); if (id > 0) st->codec->codec_type = AVMEDIA_TYPE_VIDEO; else if (st->codec->codec_type == AVMEDIA_TYPE_DATA || (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE && st->codec->codec_id == AV_CODEC_ID_NONE)) { id = ff_codec_get_id(ff_codec_movsubtitle_tags, format); if (id > 0) st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE; } } st->codec->codec_tag = format; return id; } static void mov_parse_stsd_video(MOVContext *c, AVIOContext *pb, AVStream *st, MOVStreamContext *sc) { uint8_t codec_name[32]; unsigned int color_depth, len, j; int color_greyscale; int color_table_id; avio_rb16(pb); /* version */ avio_rb16(pb); /* revision level */ avio_rb32(pb); /* vendor */ avio_rb32(pb); /* temporal quality */ avio_rb32(pb); /* spatial quality */ st->codec->width = avio_rb16(pb); /* width */ st->codec->height = avio_rb16(pb); /* height */ avio_rb32(pb); /* horiz resolution */ avio_rb32(pb); /* vert resolution */ avio_rb32(pb); /* data size, always 0 */ avio_rb16(pb); /* frames per samples */ len = avio_r8(pb); /* codec name, pascal string */ if (len > 31) len = 31; mov_read_mac_string(c, pb, len, codec_name, sizeof(codec_name)); if (len < 31) avio_skip(pb, 31 - len); if (codec_name[0]) av_dict_set(&st->metadata, "encoder", codec_name, 0); /* codec_tag YV12 triggers an UV swap in rawdec.c */ if (!memcmp(codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25)) { st->codec->codec_tag = MKTAG('I', '4', '2', '0'); st->codec->width &= ~1; st->codec->height &= ~1; } /* Flash Media Server uses tag H263 with Sorenson Spark */ if (st->codec->codec_tag == MKTAG('H','2','6','3') && !memcmp(codec_name, "Sorenson H263", 13)) st->codec->codec_id = AV_CODEC_ID_FLV1; st->codec->bits_per_coded_sample = avio_rb16(pb); /* depth */ color_table_id = avio_rb16(pb); /* colortable id */ av_dlog(c->fc, "depth %d, ctab id %d\n", st->codec->bits_per_coded_sample, color_table_id); /* figure out the palette situation */ color_depth = st->codec->bits_per_coded_sample & 0x1F; color_greyscale = st->codec->bits_per_coded_sample & 0x20; /* Do not create a greyscale palette for cinepak */ if (color_greyscale && st->codec->codec_id == AV_CODEC_ID_CINEPAK) return; /* if the depth is 2, 4, or 8 bpp, file is palettized */ if ((color_depth == 2) || (color_depth == 4) || (color_depth == 8)) { /* for palette traversal */ unsigned int color_start, color_count, color_end; unsigned char a, r, g, b; if (color_greyscale) { int color_index, color_dec; /* compute the greyscale palette */ st->codec->bits_per_coded_sample = color_depth; color_count = 1 << color_depth; color_index = 255; color_dec = 256 / (color_count - 1); for (j = 0; j < color_count; j++) { r = g = b = color_index; sc->palette[j] = (0xFFU << 24) | (r << 16) | (g << 8) | (b); color_index -= color_dec; if (color_index < 0) color_index = 0; } } else if (color_table_id) { const uint8_t *color_table; /* if flag bit 3 is set, use the default palette */ color_count = 1 << color_depth; if (color_depth == 2) color_table = ff_qt_default_palette_4; else if (color_depth == 4) color_table = ff_qt_default_palette_16; else color_table = ff_qt_default_palette_256; for (j = 0; j < color_count; j++) { r = color_table[j * 3 + 0]; g = color_table[j * 3 + 1]; b = color_table[j * 3 + 2]; sc->palette[j] = (0xFFU << 24) | (r << 16) | (g << 8) | (b); } } else { /* load the palette from the file */ color_start = avio_rb32(pb); color_count = avio_rb16(pb); color_end = avio_rb16(pb); if ((color_start <= 255) && (color_end <= 255)) { for (j = color_start; j <= color_end; j++) { /* each A, R, G, or B component is 16 bits; * only use the top 8 bits */ a = avio_r8(pb); avio_r8(pb); r = avio_r8(pb); avio_r8(pb); g = avio_r8(pb); avio_r8(pb); b = avio_r8(pb); avio_r8(pb); sc->palette[j] = (a << 24 ) | (r << 16) | (g << 8) | (b); } } } sc->has_palette = 1; } } static void mov_parse_stsd_audio(MOVContext *c, AVIOContext *pb, AVStream *st, MOVStreamContext *sc) { int bits_per_sample, flags; uint16_t version = avio_rb16(pb); AVDictionaryEntry *compatible_brands = av_dict_get(c->fc->metadata, "compatible_brands", NULL, AV_DICT_MATCH_CASE); avio_rb16(pb); /* revision level */ avio_rb32(pb); /* vendor */ st->codec->channels = avio_rb16(pb); /* channel count */ st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */ av_dlog(c->fc, "audio channels %d\n", st->codec->channels); sc->audio_cid = avio_rb16(pb); avio_rb16(pb); /* packet size = 0 */ st->codec->sample_rate = ((avio_rb32(pb) >> 16)); // Read QT version 1 fields. In version 0 these do not exist. av_dlog(c->fc, "version =%d, isom =%d\n", version, c->isom); if (!c->isom || (compatible_brands && strstr(compatible_brands->value, "qt "))) { if (version == 1) { sc->samples_per_frame = avio_rb32(pb); avio_rb32(pb); /* bytes per packet */ sc->bytes_per_frame = avio_rb32(pb); avio_rb32(pb); /* bytes per sample */ } else if (version == 2) { avio_rb32(pb); /* sizeof struct only */ st->codec->sample_rate = av_int2double(avio_rb64(pb)); st->codec->channels = avio_rb32(pb); avio_rb32(pb); /* always 0x7F000000 */ st->codec->bits_per_coded_sample = avio_rb32(pb); flags = avio_rb32(pb); /* lpcm format specific flag */ sc->bytes_per_frame = avio_rb32(pb); sc->samples_per_frame = avio_rb32(pb); if (st->codec->codec_tag == MKTAG('l','p','c','m')) st->codec->codec_id = ff_mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags); } } switch (st->codec->codec_id) { case AV_CODEC_ID_PCM_S8: case AV_CODEC_ID_PCM_U8: if (st->codec->bits_per_coded_sample == 16) st->codec->codec_id = AV_CODEC_ID_PCM_S16BE; break; case AV_CODEC_ID_PCM_S16LE: case AV_CODEC_ID_PCM_S16BE: if (st->codec->bits_per_coded_sample == 8) st->codec->codec_id = AV_CODEC_ID_PCM_S8; else if (st->codec->bits_per_coded_sample == 24) st->codec->codec_id = st->codec->codec_id == AV_CODEC_ID_PCM_S16BE ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE; else if (st->codec->bits_per_coded_sample == 32) st->codec->codec_id = st->codec->codec_id == AV_CODEC_ID_PCM_S16BE ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE; break; /* set values for old format before stsd version 1 appeared */ case AV_CODEC_ID_MACE3: sc->samples_per_frame = 6; sc->bytes_per_frame = 2 * st->codec->channels; break; case AV_CODEC_ID_MACE6: sc->samples_per_frame = 6; sc->bytes_per_frame = 1 * st->codec->channels; break; case AV_CODEC_ID_ADPCM_IMA_QT: sc->samples_per_frame = 64; sc->bytes_per_frame = 34 * st->codec->channels; break; case AV_CODEC_ID_GSM: sc->samples_per_frame = 160; sc->bytes_per_frame = 33; break; default: break; } bits_per_sample = av_get_bits_per_sample(st->codec->codec_id); if (bits_per_sample) { st->codec->bits_per_coded_sample = bits_per_sample; sc->sample_size = (bits_per_sample >> 3) * st->codec->channels; } } static void mov_parse_stsd_subtitle(MOVContext *c, AVIOContext *pb, AVStream *st, MOVStreamContext *sc, int64_t size) { // ttxt stsd contains display flags, justification, background // color, fonts, and default styles, so fake an atom to read it MOVAtom fake_atom = { .size = size }; // mp4s contains a regular esds atom if (st->codec->codec_tag != AV_RL32("mp4s")) mov_read_glbl(c, pb, fake_atom); st->codec->width = sc->width; st->codec->height = sc->height; } static uint32_t yuv_to_rgba(uint32_t ycbcr) { uint8_t r, g, b; int y, cb, cr; y = (ycbcr >> 16) & 0xFF; cr = (ycbcr >> 8) & 0xFF; cb = ycbcr & 0xFF; b = av_clip_uint8(1.164 * (y - 16) + 2.018 * (cb - 128)); g = av_clip_uint8(1.164 * (y - 16) - 0.813 * (cr - 128) - 0.391 * (cb - 128)); r = av_clip_uint8(1.164 * (y - 16) + 1.596 * (cr - 128)); return (r << 16) | (g << 8) | b; } static int mov_rewrite_dvd_sub_extradata(AVStream *st) { char buf[256] = {0}; uint8_t *src = st->codec->extradata; int i; if (st->codec->extradata_size != 64) return 0; if (st->codec->width > 0 && st->codec->height > 0) snprintf(buf, sizeof(buf), "size: %dx%d\n", st->codec->width, st->codec->height); av_strlcat(buf, "palette: ", sizeof(buf)); for (i = 0; i < 16; i++) { uint32_t yuv = AV_RB32(src + i * 4); uint32_t rgba = yuv_to_rgba(yuv); av_strlcatf(buf, sizeof(buf), "%06"PRIx32"%s", rgba, i != 15 ? ", " : ""); } if (av_strlcat(buf, "\n", sizeof(buf)) >= sizeof(buf)) return 0; av_freep(&st->codec->extradata); st->codec->extradata_size = 0; st->codec->extradata = av_mallocz(strlen(buf) + FF_INPUT_BUFFER_PADDING_SIZE); if (!st->codec->extradata) return AVERROR(ENOMEM); st->codec->extradata_size = strlen(buf); memcpy(st->codec->extradata, buf, st->codec->extradata_size); return 0; } static int mov_parse_stsd_data(MOVContext *c, AVIOContext *pb, AVStream *st, MOVStreamContext *sc, int64_t size) { if (st->codec->codec_tag == MKTAG('t','m','c','d')) { if ((int)size != size || ff_get_extradata(st->codec, pb, size) < 0) return AVERROR(ENOMEM); if (size > 16) { MOVStreamContext *tmcd_ctx = st->priv_data; int val; val = AV_RB32(st->codec->extradata + 4); tmcd_ctx->tmcd_flags = val; if (val & 1) st->codec->flags2 |= CODEC_FLAG2_DROP_FRAME_TIMECODE; st->codec->time_base.den = st->codec->extradata[16]; /* number of frame */ st->codec->time_base.num = 1; if (size > 30) { uint32_t len = AV_RB32(st->codec->extradata + 18); /* name atom length */ uint32_t format = AV_RB32(st->codec->extradata + 22); if (format == AV_RB32("name") && (int64_t)size >= (int64_t)len + 18) { uint16_t str_size = AV_RB16(st->codec->extradata + 26); /* string length */ if (str_size > 0 && size >= (int)str_size + 26) { char *reel_name = av_malloc(str_size + 1); if (!reel_name) return AVERROR(ENOMEM); memcpy(reel_name, st->codec->extradata + 30, str_size); reel_name[str_size] = 0; /* Add null terminator */ /* don't add reel_name if emtpy string */ if (*reel_name == 0) { av_free(reel_name); } else { av_dict_set(&st->metadata, "reel_name", reel_name, AV_DICT_DONT_STRDUP_VAL); } } } } } } else { /* other codec type, just skip (rtp, mp4s ...) */ avio_skip(pb, size); } return 0; } static int mov_finalize_stsd_codec(MOVContext *c, AVIOContext *pb, AVStream *st, MOVStreamContext *sc) { if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !st->codec->sample_rate && sc->time_scale > 1) st->codec->sample_rate = sc->time_scale; /* special codec parameters handling */ switch (st->codec->codec_id) { #if CONFIG_DV_DEMUXER case AV_CODEC_ID_DVAUDIO: c->dv_fctx = avformat_alloc_context(); c->dv_demux = avpriv_dv_init_demux(c->dv_fctx); if (!c->dv_demux) { av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n"); return AVERROR(ENOMEM); } sc->dv_audio_container = 1; st->codec->codec_id = AV_CODEC_ID_PCM_S16LE; break; #endif /* no ifdef since parameters are always those */ case AV_CODEC_ID_QCELP: st->codec->channels = 1; // force sample rate for qcelp when not stored in mov if (st->codec->codec_tag != MKTAG('Q','c','l','p')) st->codec->sample_rate = 8000; // FIXME: Why is the following needed for some files? sc->samples_per_frame = 160; if (!sc->bytes_per_frame) sc->bytes_per_frame = 35; break; case AV_CODEC_ID_AMR_NB: st->codec->channels = 1; /* force sample rate for amr, stsd in 3gp does not store sample rate */ st->codec->sample_rate = 8000; break; case AV_CODEC_ID_AMR_WB: st->codec->channels = 1; st->codec->sample_rate = 16000; break; case AV_CODEC_ID_MP2: case AV_CODEC_ID_MP3: /* force type after stsd for m1a hdlr */ st->codec->codec_type = AVMEDIA_TYPE_AUDIO; st->need_parsing = AVSTREAM_PARSE_FULL; break; case AV_CODEC_ID_GSM: case AV_CODEC_ID_ADPCM_MS: case AV_CODEC_ID_ADPCM_IMA_WAV: case AV_CODEC_ID_ILBC: case AV_CODEC_ID_MACE3: case AV_CODEC_ID_MACE6: case AV_CODEC_ID_QDM2: st->codec->block_align = sc->bytes_per_frame; break; case AV_CODEC_ID_ALAC: if (st->codec->extradata_size == 36) { st->codec->channels = AV_RB8 (st->codec->extradata + 21); st->codec->sample_rate = AV_RB32(st->codec->extradata + 32); } break; case AV_CODEC_ID_AC3: case AV_CODEC_ID_EAC3: case AV_CODEC_ID_MPEG1VIDEO: case AV_CODEC_ID_VC1: st->need_parsing = AVSTREAM_PARSE_FULL; break; default: break; } return 0; } static int mov_skip_multiple_stsd(MOVContext *c, AVIOContext *pb, int codec_tag, int format, int64_t size) { int video_codec_id = ff_codec_get_id(ff_codec_movvideo_tags, format); if (codec_tag && (codec_tag != format && (c->fc->video_codec_id ? video_codec_id != c->fc->video_codec_id : codec_tag != MKTAG('j','p','e','g')))) { /* Multiple fourcc, we skip JPEG. This is not correct, we should * export it as a separate AVStream but this needs a few changes * in the MOV demuxer, patch welcome. */ av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n"); avio_skip(pb, size); return 1; } if ( codec_tag == AV_RL32("avc1") || codec_tag == AV_RL32("hvc1") || codec_tag == AV_RL32("hev1") ) av_log(c->fc, AV_LOG_WARNING, "Concatenated H.264 or H.265 might not play correctly.\n"); return 0; } int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries) { AVStream *st; MOVStreamContext *sc; int pseudo_stream_id; if (c->fc->nb_streams < 1) return 0; st = c->fc->streams[c->fc->nb_streams-1]; sc = st->priv_data; for (pseudo_stream_id = 0; pseudo_stream_id < entries && !pb->eof_reached; pseudo_stream_id++) { //Parsing Sample description table enum AVCodecID id; int ret, dref_id = 1; MOVAtom a = { AV_RL32("stsd") }; int64_t start_pos = avio_tell(pb); int64_t size = avio_rb32(pb); /* size */ uint32_t format = avio_rl32(pb); /* data format */ if (size >= 16) { avio_rb32(pb); /* reserved */ avio_rb16(pb); /* reserved */ dref_id = avio_rb16(pb); }else if (size <= 7){ av_log(c->fc, AV_LOG_ERROR, "invalid size %"PRId64" in stsd\n", size); return AVERROR_INVALIDDATA; } if (mov_skip_multiple_stsd(c, pb, st->codec->codec_tag, format, size - (avio_tell(pb) - start_pos))) continue; sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id; sc->dref_id= dref_id; id = mov_codec_id(st, format); av_dlog(c->fc, "size=%"PRId64" 4CC= %c%c%c%c codec_type=%d\n", size, (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff, (format >> 24) & 0xff, st->codec->codec_type); if (st->codec->codec_type==AVMEDIA_TYPE_VIDEO) { st->codec->codec_id = id; mov_parse_stsd_video(c, pb, st, sc); } else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) { st->codec->codec_id = id; mov_parse_stsd_audio(c, pb, st, sc); } else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){ st->codec->codec_id = id; mov_parse_stsd_subtitle(c, pb, st, sc, size - (avio_tell(pb) - start_pos)); } else { ret = mov_parse_stsd_data(c, pb, st, sc, size - (avio_tell(pb) - start_pos)); if (ret < 0) return ret; } /* this will read extra atoms at the end (wave, alac, damr, avcC, hvcC, SMI ...) */ a.size = size - (avio_tell(pb) - start_pos); if (a.size > 8) { if ((ret = mov_read_default(c, pb, a)) < 0) return ret; } else if (a.size > 0) avio_skip(pb, a.size); } if (pb->eof_reached) return AVERROR_EOF; return mov_finalize_stsd_codec(c, pb, st, sc); } static int mov_read_stsd(MOVContext *c, AVIOContext *pb, MOVAtom atom) { int entries; avio_r8(pb); /* version */ avio_rb24(pb); /* flags */ entries = avio_rb32(pb); return ff_mov_read_stsd_entries(c, pb, entries); } static int mov_read_stsc(MOVContext *c, AVIOContext *pb, MOVAtom atom) { AVStream *st; MOVStreamContext *sc; unsigned int i, entries; if (c->fc->nb_streams < 1) return 0; st = c->fc->streams[c->fc->nb_streams-1]; sc = st->priv_data; avio_r8(pb); /* version */ avio_rb24(pb); /* flags */ entries = avio_rb32(pb); av_dlog(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries); if (!entries) return 0; if (sc->stsc_data) av_log(c->fc, AV_LOG_WARNING, "Duplicated STSC atom\n"); av_free(sc->stsc_data); sc->stsc_count = 0; sc->stsc_data = av_malloc_array(entries, sizeof(*sc->stsc_data)); if (!sc->stsc_data) return AVERROR(ENOMEM); for (i = 0; i < entries && !pb->eof_reached; i++) { sc->stsc_data[i].first = avio_rb32(pb); sc->stsc_data[i].count = avio_rb32(pb); sc->stsc_data[i].id = avio_rb32(pb); } sc->stsc_count = i; if (pb->eof_reached) return AVERROR_EOF; return 0; } static int mov_read_stps(MOVContext *c, AVIOContext *pb, MOVAtom atom) { AVStream *st; MOVStreamContext *sc; unsigned i, entries; if (c->fc->nb_streams < 1) return 0; st = c->fc->streams[c->fc->nb_streams-1]; sc = st->priv_data; avio_rb32(pb); // version + flags entries = avio_rb32(pb); if (sc->stps_data) av_log(c->fc, AV_LOG_WARNING, "Duplicated STPS atom\n"); av_free(sc->stps_data); sc->stps_count = 0; sc->stps_data = av_malloc_array(entries, sizeof(*sc->stps_data)); if (!sc->stps_data) return AVERROR(ENOMEM); for (i = 0; i < entries && !pb->eof_reached; i++) { sc->stps_data[i] = avio_rb32(pb); //av_dlog(c->fc, "stps %d\n", sc->stps_data[i]); } sc->stps_count = i; if (pb->eof_reached) return AVERROR_EOF; return 0; } static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom) { AVStream *st; MOVStreamContext *sc; unsigned int i, entries; if (c->fc->nb_streams < 1) return 0; st = c->fc->streams[c->fc->nb_streams-1]; sc = st->priv_data; avio_r8(pb); /* version */ avio_rb24(pb); /* flags */ entries = avio_rb32(pb); av_dlog(c->fc, "keyframe_count = %d\n", entries); if (!entries) { sc->keyframe_absent = 1; if (!st->need_parsing && st->codec->codec_type == AVMEDIA_TYPE_VIDEO) st->need_parsing = AVSTREAM_PARSE_HEADERS; return 0; } if (sc->keyframes) av_log(c->fc, AV_LOG_WARNING, "Duplicated STSS atom\n"); if (entries >= UINT_MAX / sizeof(int)) return AVERROR_INVALIDDATA; av_freep(&sc->keyframes); sc->keyframe_count = 0; sc->keyframes = av_malloc_array(entries, sizeof(*sc->keyframes)); if (!sc->keyframes) return AVERROR(ENOMEM); for (i = 0; i < entries && !pb->eof_reached; i++) { sc->keyframes[i] = avio_rb32(pb); //av_dlog(c->fc, "keyframes[]=%d\n", sc->keyframes[i]); } sc->keyframe_count = i; if (pb->eof_reached) return AVERROR_EOF; return 0; } static int mov_read_stsz(MOVContext *c, AVIOContext *pb, MOVAtom atom) { AVStream *st; MOVStreamContext *sc; unsigned int i, entries, sample_size, field_size, num_bytes; GetBitContext gb; unsigned char* buf; if (c->fc->nb_streams < 1) return 0; st = c->fc->streams[c->fc->nb_streams-1]; sc = st->priv_data; avio_r8(pb); /* version */ avio_rb24(pb); /* flags */ if (atom.type == MKTAG('s','t','s','z')) { sample_size = avio_rb32(pb); if (!sc->sample_size) /* do not overwrite value computed in stsd */ sc->sample_size = sample_size; sc->stsz_sample_size = sample_size; field_size = 32; } else { sample_size = 0; avio_rb24(pb); /* reserved */ field_size = avio_r8(pb); } entries = avio_rb32(pb); av_dlog(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries); sc->sample_count = entries; if (sample_size) return 0; if (field_size != 4 && field_size != 8 && field_size != 16 && field_size != 32) { av_log(c->fc, AV_LOG_ERROR, "Invalid sample field size %d\n", field_size); return AVERROR_INVALIDDATA; } if (!entries) return 0; if (entries >= (UINT_MAX - 4) / field_size) return AVERROR_INVALIDDATA; if (sc->sample_sizes) av_log(c->fc, AV_LOG_WARNING, "Duplicated STSZ atom\n"); av_free(sc->sample_sizes); sc->sample_count = 0; sc->sample_sizes = av_malloc_array(entries, sizeof(*sc->sample_sizes)); if (!sc->sample_sizes) return AVERROR(ENOMEM); num_bytes = (entries*field_size+4)>>3; buf = av_malloc(num_bytes+FF_INPUT_BUFFER_PADDING_SIZE); if (!buf) { av_freep(&sc->sample_sizes); return AVERROR(ENOMEM); } if (avio_read(pb, buf, num_bytes) < num_bytes) { av_freep(&sc->sample_sizes); av_free(buf); return AVERROR_INVALIDDATA; } init_get_bits(&gb, buf, 8*num_bytes); for (i = 0; i < entries && !pb->eof_reached; i++) { sc->sample_sizes[i] = get_bits_long(&gb, field_size); sc->data_size += sc->sample_sizes[i]; } sc->sample_count = i; if (pb->eof_reached) return AVERROR_EOF; av_free(buf); return 0; } static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom) { AVStream *st; MOVStreamContext *sc; unsigned int i, entries; int64_t duration=0; int64_t total_sample_count=0; if (c->fc->nb_streams < 1) return 0; st = c->fc->streams[c->fc->nb_streams-1]; sc = st->priv_data; avio_r8(pb); /* version */ avio_rb24(pb); /* flags */ entries = avio_rb32(pb); av_dlog(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries); if (sc->stts_data) av_log(c->fc, AV_LOG_WARNING, "Duplicated STTS atom\n"); av_free(sc->stts_data); sc->stts_count = 0; sc->stts_data = av_malloc_array(entries, sizeof(*sc->stts_data)); if (!sc->stts_data) return AVERROR(ENOMEM); for (i = 0; i < entries && !pb->eof_reached; i++) { int sample_duration; int sample_count; sample_count=avio_rb32(pb); sample_duration = avio_rb32(pb); /* sample_duration < 0 is invalid based on the spec */ if (sample_duration < 0) { av_log(c->fc, AV_LOG_ERROR, "Invalid SampleDelta %d in STTS, at %d st:%d\n", sample_duration, i, c->fc->nb_streams-1); sample_duration = 1; } if (sample_count < 0) { av_log(c->fc, AV_LOG_ERROR, "Invalid sample_count=%d\n", sample_count); return AVERROR_INVALIDDATA; } sc->stts_data[i].count= sample_count; sc->stts_data[i].duration= sample_duration; av_dlog(c->fc, "sample_count=%d, sample_duration=%d\n", sample_count, sample_duration); if ( i+1 == entries && i && sample_count == 1 && total_sample_count > 100 && sample_duration/10 > duration / total_sample_count) sample_duration = duration / total_sample_count; duration+=(int64_t)sample_duration*sample_count; total_sample_count+=sample_count; } sc->stts_count = i; sc->duration_for_fps += duration; sc->nb_frames_for_fps += total_sample_count; if (pb->eof_reached) return AVERROR_EOF; st->nb_frames= total_sample_count; if (duration) st->duration= duration; sc->track_end = duration; return 0; } static void mov_update_dts_shift(MOVStreamContext *sc, int duration) { if (duration < 0) { sc->dts_shift = FFMAX(sc->dts_shift, -duration); } } static int mov_read_ctts(MOVContext *c, AVIOContext *pb, MOVAtom atom) { AVStream *st; MOVStreamContext *sc; unsigned int i, entries; if (c->fc->nb_streams < 1) return 0; st = c->fc->streams[c->fc->nb_streams-1]; sc = st->priv_data; avio_r8(pb); /* version */ avio_rb24(pb); /* flags */ entries = avio_rb32(pb); av_dlog(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries); if (!entries) return 0; if (entries >= UINT_MAX / sizeof(*sc->ctts_data)) return AVERROR_INVALIDDATA; sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data)); if (!sc->ctts_data) return AVERROR(ENOMEM); for (i = 0; i < entries && !pb->eof_reached; i++) { int count =avio_rb32(pb); int duration =avio_rb32(pb); sc->ctts_data[i].count = count; sc->ctts_data[i].duration= duration; av_dlog(c->fc, "count=%d, duration=%d\n", count, duration); if (FFABS(duration) > (1<<28) && i+2fc, AV_LOG_WARNING, "CTTS invalid\n"); av_freep(&sc->ctts_data); sc->ctts_count = 0; return 0; } if (i+2ctts_count = i; if (pb->eof_reached) return AVERROR_EOF; av_dlog(c->fc, "dts shift %d\n", sc->dts_shift); return 0; } static int mov_read_sbgp(MOVContext *c, AVIOContext *pb, MOVAtom atom) { AVStream *st; MOVStreamContext *sc; unsigned int i, entries; uint8_t version; uint32_t grouping_type; if (c->fc->nb_streams < 1) return 0; st = c->fc->streams[c->fc->nb_streams-1]; sc = st->priv_data; version = avio_r8(pb); /* version */ avio_rb24(pb); /* flags */ grouping_type = avio_rl32(pb); if (grouping_type != MKTAG( 'r','a','p',' ')) return 0; /* only support 'rap ' grouping */ if (version == 1) avio_rb32(pb); /* grouping_type_parameter */ entries = avio_rb32(pb); if (!entries) return 0; if (sc->rap_group) av_log(c->fc, AV_LOG_WARNING, "Duplicated SBGP atom\n"); av_free(sc->rap_group); sc->rap_group_count = 0; sc->rap_group = av_malloc_array(entries, sizeof(*sc->rap_group)); if (!sc->rap_group) return AVERROR(ENOMEM); for (i = 0; i < entries && !pb->eof_reached; i++) { sc->rap_group[i].count = avio_rb32(pb); /* sample_count */ sc->rap_group[i].index = avio_rb32(pb); /* group_description_index */ } sc->rap_group_count = i; return pb->eof_reached ? AVERROR_EOF : 0; } static void mov_build_index(MOVContext *mov, AVStream *st) { MOVStreamContext *sc = st->priv_data; int64_t current_offset; int64_t current_dts = 0; unsigned int stts_index = 0; unsigned int stsc_index = 0; unsigned int stss_index = 0; unsigned int stps_index = 0; unsigned int i, j; uint64_t stream_size = 0; if (sc->elst_count) { int i, edit_start_index = 0, unsupported = 0; int64_t empty_duration = 0; // empty duration of the first edit list entry int64_t start_time = 0; // start time of the media for (i = 0; i < sc->elst_count; i++) { const MOVElst *e = &sc->elst_data[i]; if (i == 0 && e->time == -1) { /* if empty, the first entry is the start time of the stream * relative to the presentation itself */ empty_duration = e->duration; edit_start_index = 1; } else if (i == edit_start_index && e->time >= 0) { start_time = e->time; } else unsupported = 1; } if (unsupported) av_log(mov->fc, AV_LOG_WARNING, "multiple edit list entries, " "a/v desync might occur, patch welcome\n"); /* adjust first dts according to edit list */ if ((empty_duration || start_time) && mov->time_scale > 0) { if (empty_duration) empty_duration = av_rescale(empty_duration, sc->time_scale, mov->time_scale); sc->time_offset = start_time - empty_duration; current_dts = -sc->time_offset; if (sc->ctts_count>0 && sc->stts_count>0 && sc->ctts_data[0].duration / FFMAX(sc->stts_data[0].duration, 1) > 16) { /* more than 16 frames delay, dts are likely wrong this happens with files created by iMovie */ sc->wrong_dts = 1; st->codec->has_b_frames = 1; } } } /* only use old uncompressed audio chunk demuxing when stts specifies it */ if (!(st->codec->codec_type == AVMEDIA_TYPE_AUDIO && sc->stts_count == 1 && sc->stts_data[0].duration == 1)) { unsigned int current_sample = 0; unsigned int stts_sample = 0; unsigned int sample_size; unsigned int distance = 0; unsigned int rap_group_index = 0; unsigned int rap_group_sample = 0; int rap_group_present = sc->rap_group_count && sc->rap_group; int key_off = (sc->keyframe_count && sc->keyframes[0] > 0) || (sc->stps_count && sc->stps_data[0] > 0); current_dts -= sc->dts_shift; if (!sc->sample_count || st->nb_index_entries) return; if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries) return; if (av_reallocp_array(&st->index_entries, st->nb_index_entries + sc->sample_count, sizeof(*st->index_entries)) < 0) { st->nb_index_entries = 0; return; } st->index_entries_allocated_size = (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries); for (i = 0; i < sc->chunk_count; i++) { int64_t next_offset = i+1 < sc->chunk_count ? sc->chunk_offsets[i+1] : INT64_MAX; current_offset = sc->chunk_offsets[i]; while (stsc_index + 1 < sc->stsc_count && i + 1 == sc->stsc_data[stsc_index + 1].first) stsc_index++; if (next_offset > current_offset && sc->sample_size>0 && sc->sample_size < sc->stsz_sample_size && sc->stsc_data[stsc_index].count * (int64_t)sc->stsz_sample_size > next_offset - current_offset) { av_log(mov->fc, AV_LOG_WARNING, "STSZ sample size %d invalid (too large), ignoring\n", sc->stsz_sample_size); sc->stsz_sample_size = sc->sample_size; } if (sc->stsz_sample_size>0 && sc->stsz_sample_size < sc->sample_size) { av_log(mov->fc, AV_LOG_WARNING, "STSZ sample size %d invalid (too small), ignoring\n", sc->stsz_sample_size); sc->stsz_sample_size = sc->sample_size; } for (j = 0; j < sc->stsc_data[stsc_index].count; j++) { int keyframe = 0; if (current_sample >= sc->sample_count) { av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n"); return; } if (!sc->keyframe_absent && (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index])) { keyframe = 1; if (stss_index + 1 < sc->keyframe_count) stss_index++; } else if (sc->stps_count && current_sample+key_off == sc->stps_data[stps_index]) { keyframe = 1; if (stps_index + 1 < sc->stps_count) stps_index++; } if (rap_group_present && rap_group_index < sc->rap_group_count) { if (sc->rap_group[rap_group_index].index > 0) keyframe = 1; if (++rap_group_sample == sc->rap_group[rap_group_index].count) { rap_group_sample = 0; rap_group_index++; } } if (sc->keyframe_absent && !sc->stps_count && !rap_group_present && (st->codec->codec_type == AVMEDIA_TYPE_AUDIO || (i==0 && j==0))) keyframe = 1; if (keyframe) distance = 0; sample_size = sc->stsz_sample_size > 0 ? sc->stsz_sample_size : sc->sample_sizes[current_sample]; if (sc->pseudo_stream_id == -1 || sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) { AVIndexEntry *e = &st->index_entries[st->nb_index_entries++]; e->pos = current_offset; e->timestamp = current_dts; e->size = sample_size; e->min_distance = distance; e->flags = keyframe ? AVINDEX_KEYFRAME : 0; av_dlog(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", " "size %d, distance %d, keyframe %d\n", st->index, current_sample, current_offset, current_dts, sample_size, distance, keyframe); if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && st->nb_index_entries < 100) ff_rfps_add_frame(mov->fc, st, current_dts); } current_offset += sample_size; stream_size += sample_size; current_dts += sc->stts_data[stts_index].duration; distance++; stts_sample++; current_sample++; if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) { stts_sample = 0; stts_index++; } } } if (st->duration > 0) st->codec->bit_rate = stream_size*8*sc->time_scale/st->duration; } else { unsigned chunk_samples, total = 0; // compute total chunk count for (i = 0; i < sc->stsc_count; i++) { unsigned count, chunk_count; chunk_samples = sc->stsc_data[i].count; if (i != sc->stsc_count - 1 && sc->samples_per_frame && chunk_samples % sc->samples_per_frame) { av_log(mov->fc, AV_LOG_ERROR, "error unaligned chunk\n"); return; } if (sc->samples_per_frame >= 160) { // gsm count = chunk_samples / sc->samples_per_frame; } else if (sc->samples_per_frame > 1) { unsigned samples = (1024/sc->samples_per_frame)*sc->samples_per_frame; count = (chunk_samples+samples-1) / samples; } else { count = (chunk_samples+1023) / 1024; } if (i < sc->stsc_count - 1) chunk_count = sc->stsc_data[i+1].first - sc->stsc_data[i].first; else chunk_count = sc->chunk_count - (sc->stsc_data[i].first - 1); total += chunk_count * count; } av_dlog(mov->fc, "chunk count %d\n", total); if (total >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries) return; if (av_reallocp_array(&st->index_entries, st->nb_index_entries + total, sizeof(*st->index_entries)) < 0) { st->nb_index_entries = 0; return; } st->index_entries_allocated_size = (st->nb_index_entries + total) * sizeof(*st->index_entries); // populate index for (i = 0; i < sc->chunk_count; i++) { current_offset = sc->chunk_offsets[i]; if (stsc_index + 1 < sc->stsc_count && i + 1 == sc->stsc_data[stsc_index + 1].first) stsc_index++; chunk_samples = sc->stsc_data[stsc_index].count; while (chunk_samples > 0) { AVIndexEntry *e; unsigned size, samples; if (sc->samples_per_frame >= 160) { // gsm samples = sc->samples_per_frame; size = sc->bytes_per_frame; } else { if (sc->samples_per_frame > 1) { samples = FFMIN((1024 / sc->samples_per_frame)* sc->samples_per_frame, chunk_samples); size = (samples / sc->samples_per_frame) * sc->bytes_per_frame; } else { samples = FFMIN(1024, chunk_samples); size = samples * sc->sample_size; } } if (st->nb_index_entries >= total) { av_log(mov->fc, AV_LOG_ERROR, "wrong chunk count %d\n", total); return; } e = &st->index_entries[st->nb_index_entries++]; e->pos = current_offset; e->timestamp = current_dts; e->size = size; e->min_distance = 0; e->flags = AVINDEX_KEYFRAME; av_dlog(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", " "size %d, duration %d\n", st->index, i, current_offset, current_dts, size, samples); current_offset += size; current_dts += samples; chunk_samples -= samples; } } } } static int mov_open_dref(AVIOContext **pb, const char *src, MOVDref *ref, AVIOInterruptCB *int_cb, int use_absolute_path, AVFormatContext *fc) { /* try relative path, we do not try the absolute because it can leak information about our system to an attacker */ if (ref->nlvl_to > 0 && ref->nlvl_from > 0) { char filename[1024]; const char *src_path; int i, l; /* find a source dir */ src_path = strrchr(src, '/'); if (src_path) src_path++; else src_path = src; /* find a next level down to target */ for (i = 0, l = strlen(ref->path) - 1; l >= 0; l--) if (ref->path[l] == '/') { if (i == ref->nlvl_to - 1) break; else i++; } /* compose filename if next level down to target was found */ if (i == ref->nlvl_to - 1 && src_path - src < sizeof(filename)) { memcpy(filename, src, src_path - src); filename[src_path - src] = 0; for (i = 1; i < ref->nlvl_from; i++) av_strlcat(filename, "../", 1024); av_strlcat(filename, ref->path + l + 1, 1024); if (!avio_open2(pb, filename, AVIO_FLAG_READ, int_cb, NULL)) return 0; } } else if (use_absolute_path) { av_log(fc, AV_LOG_WARNING, "Using absolute path on user request, " "this is a possible security issue\n"); if (!avio_open2(pb, ref->path, AVIO_FLAG_READ, int_cb, NULL)) return 0; } return AVERROR(ENOENT); } static void fix_timescale(MOVContext *c, MOVStreamContext *sc) { if (sc->time_scale <= 0) { av_log(c->fc, AV_LOG_WARNING, "stream %d, timescale not set\n", sc->ffindex); sc->time_scale = c->time_scale; if (sc->time_scale <= 0) sc->time_scale = 1; } } static int mov_read_trak(MOVContext *c, AVIOContext *pb, MOVAtom atom) { AVStream *st; MOVStreamContext *sc; int ret; st = avformat_new_stream(c->fc, NULL); if (!st) return AVERROR(ENOMEM); st->id = c->fc->nb_streams; sc = av_mallocz(sizeof(MOVStreamContext)); if (!sc) return AVERROR(ENOMEM); st->priv_data = sc; st->codec->codec_type = AVMEDIA_TYPE_DATA; sc->ffindex = st->index; if ((ret = mov_read_default(c, pb, atom)) < 0) return ret; /* sanity checks */ if (sc->chunk_count && (!sc->stts_count || !sc->stsc_count || (!sc->sample_size && !sc->sample_count))) { av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n", st->index); return 0; } fix_timescale(c, sc); avpriv_set_pts_info(st, 64, 1, sc->time_scale); mov_build_index(c, st); if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) { MOVDref *dref = &sc->drefs[sc->dref_id - 1]; if (mov_open_dref(&sc->pb, c->fc->filename, dref, &c->fc->interrupt_callback, c->use_absolute_path, c->fc) < 0) av_log(c->fc, AV_LOG_ERROR, "stream %d, error opening alias: path='%s', dir='%s', " "filename='%s', volume='%s', nlvl_from=%d, nlvl_to=%d\n", st->index, dref->path, dref->dir, dref->filename, dref->volume, dref->nlvl_from, dref->nlvl_to); } else { sc->pb = c->fc->pb; sc->pb_is_copied = 1; } if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) { if (!st->sample_aspect_ratio.num && (st->codec->width != sc->width || st->codec->height != sc->height)) { st->sample_aspect_ratio = av_d2q(((double)st->codec->height * sc->width) / ((double)st->codec->width * sc->height), INT_MAX); } #if FF_API_R_FRAME_RATE if (sc->stts_count == 1 || (sc->stts_count == 2 && sc->stts_data[1].count == 1)) av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, sc->time_scale, sc->stts_data[0].duration, INT_MAX); #endif } // done for ai5q, ai52, ai55, ai1q, ai12 and ai15. if (!st->codec->extradata_size && st->codec->codec_id == AV_CODEC_ID_H264 && TAG_IS_AVCI(st->codec->codec_tag)) { ret = ff_generate_avci_extradata(st); if (ret < 0) return ret; } switch (st->codec->codec_id) { #if CONFIG_H261_DECODER case AV_CODEC_ID_H261: #endif #if CONFIG_H263_DECODER case AV_CODEC_ID_H263: #endif #if CONFIG_MPEG4_DECODER case AV_CODEC_ID_MPEG4: #endif st->codec->width = 0; /* let decoder init width/height */ st->codec->height= 0; break; } /* Do not need those anymore. */ av_freep(&sc->chunk_offsets); av_freep(&sc->stsc_data); av_freep(&sc->sample_sizes); av_freep(&sc->keyframes); av_freep(&sc->stts_data); av_freep(&sc->stps_data); av_freep(&sc->elst_data); av_freep(&sc->rap_group); return 0; } static int mov_read_ilst(MOVContext *c, AVIOContext *pb, MOVAtom atom) { int ret; c->itunes_metadata = 1; ret = mov_read_default(c, pb, atom); c->itunes_metadata = 0; return ret; } static int mov_read_custom_2plus(MOVContext *c, AVIOContext *pb, int size) { int64_t end = avio_tell(pb) + size; uint8_t *key = NULL, *val = NULL; int i; AVStream *st; MOVStreamContext *sc; if (c->fc->nb_streams < 1) return 0; st = c->fc->streams[c->fc->nb_streams-1]; sc = st->priv_data; for (i = 0; i < 2; i++) { uint8_t **p; uint32_t len, tag; if (end - avio_tell(pb) <= 12) break; len = avio_rb32(pb); tag = avio_rl32(pb); avio_skip(pb, 4); // flags if (len < 12 || len - 12 > end - avio_tell(pb)) break; len -= 12; if (tag == MKTAG('n', 'a', 'm', 'e')) p = &key; else if (tag == MKTAG('d', 'a', 't', 'a') && len > 4) { avio_skip(pb, 4); len -= 4; p = &val; } else break; *p = av_malloc(len + 1); if (!*p) break; avio_read(pb, *p, len); (*p)[len] = 0; } if (key && val) { if (strcmp(key, "iTunSMPB") == 0) { int priming, remainder, samples; if(sscanf(val, "%*X %X %X %X", &priming, &remainder, &samples) == 3){ if(priming>0 && priming<16384) sc->start_pad = priming; } } if (strcmp(key, "cdec") != 0) { av_dict_set(&c->fc->metadata, key, val, AV_DICT_DONT_STRDUP_KEY | AV_DICT_DONT_STRDUP_VAL); key = val = NULL; } } avio_seek(pb, end, SEEK_SET); av_freep(&key); av_freep(&val); return 0; } static int mov_read_custom(MOVContext *c, AVIOContext *pb, MOVAtom atom) { int64_t end = avio_tell(pb) + atom.size; uint32_t tag, len; if (atom.size < 8) goto fail; len = avio_rb32(pb); tag = avio_rl32(pb); if (len > atom.size) goto fail; if (tag == MKTAG('m', 'e', 'a', 'n') && len > 12) { uint8_t domain[128]; int domain_len; avio_skip(pb, 4); // flags len -= 12; domain_len = avio_get_str(pb, len, domain, sizeof(domain)); avio_skip(pb, len - domain_len); return mov_read_custom_2plus(c, pb, end - avio_tell(pb)); } fail: av_log(c->fc, AV_LOG_VERBOSE, "Unhandled or malformed custom metadata of size %"PRId64"\n", atom.size); return 0; } static int mov_read_meta(MOVContext *c, AVIOContext *pb, MOVAtom atom) { while (atom.size > 8) { uint32_t tag = avio_rl32(pb); atom.size -= 4; if (tag == MKTAG('h','d','l','r')) { avio_seek(pb, -8, SEEK_CUR); atom.size += 8; return mov_read_default(c, pb, atom); } } return 0; } static int mov_read_tkhd(MOVContext *c, AVIOContext *pb, MOVAtom atom) { int i; int width; int height; int64_t disp_transform[2]; int display_matrix[3][3]; AVStream *st; MOVStreamContext *sc; int version; int flags; if (c->fc->nb_streams < 1) return 0; st = c->fc->streams[c->fc->nb_streams-1]; sc = st->priv_data; version = avio_r8(pb); flags = avio_rb24(pb); st->disposition |= (flags & MOV_TKHD_FLAG_ENABLED) ? AV_DISPOSITION_DEFAULT : 0; if (version == 1) { avio_rb64(pb); avio_rb64(pb); } else { avio_rb32(pb); /* creation time */ avio_rb32(pb); /* modification time */ } st->id = (int)avio_rb32(pb); /* track id (NOT 0 !)*/ avio_rb32(pb); /* reserved */ /* highlevel (considering edits) duration in movie timebase */ (version == 1) ? avio_rb64(pb) : avio_rb32(pb); avio_rb32(pb); /* reserved */ avio_rb32(pb); /* reserved */ avio_rb16(pb); /* layer */ avio_rb16(pb); /* alternate group */ avio_rb16(pb); /* volume */ avio_rb16(pb); /* reserved */ //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2) // they're kept in fixed point format through all calculations // save u,v,z to store the whole matrix in the AV_PKT_DATA_DISPLAYMATRIX // side data, but the scale factor is not needed to calculate aspect ratio for (i = 0; i < 3; i++) { display_matrix[i][0] = avio_rb32(pb); // 16.16 fixed point display_matrix[i][1] = avio_rb32(pb); // 16.16 fixed point display_matrix[i][2] = avio_rb32(pb); // 2.30 fixed point } width = avio_rb32(pb); // 16.16 fixed point track width height = avio_rb32(pb); // 16.16 fixed point track height sc->width = width >> 16; sc->height = height >> 16; // save the matrix and add rotate metadata when it is not the default // identity if (display_matrix[0][0] != (1 << 16) || display_matrix[1][1] != (1 << 16) || display_matrix[2][2] != (1 << 30) || display_matrix[0][1] || display_matrix[0][2] || display_matrix[1][0] || display_matrix[1][2] || display_matrix[2][0] || display_matrix[2][1]) { int i, j; double rotate; av_freep(&sc->display_matrix); sc->display_matrix = av_malloc(sizeof(int32_t) * 9); if (!sc->display_matrix) return AVERROR(ENOMEM); for (i = 0; i < 3; i++) for (j = 0; j < 3; j++) sc->display_matrix[i * 3 + j] = display_matrix[j][i]; rotate = av_display_rotation_get(sc->display_matrix); if (!isnan(rotate)) { char rotate_buf[64]; rotate = -rotate; if (rotate < 0) // for backward compatibility rotate += 360; snprintf(rotate_buf, sizeof(rotate_buf), "%g", rotate); av_dict_set(&st->metadata, "rotate", rotate_buf, 0); } } // transform the display width/height according to the matrix // skip this if the display matrix is the default identity matrix // or if it is rotating the picture, ex iPhone 3GS // to keep the same scale, use [width height 1<<16] if (width && height && ((display_matrix[0][0] != 65536 || display_matrix[1][1] != 65536) && !display_matrix[0][1] && !display_matrix[1][0] && !display_matrix[2][0] && !display_matrix[2][1])) { for (i = 0; i < 2; i++) disp_transform[i] = (int64_t) width * display_matrix[0][i] + (int64_t) height * display_matrix[1][i] + ((int64_t) display_matrix[2][i] << 16); //sample aspect ratio is new width/height divided by old width/height st->sample_aspect_ratio = av_d2q( ((double) disp_transform[0] * height) / ((double) disp_transform[1] * width), INT_MAX); } return 0; } static int mov_read_tfhd(MOVContext *c, AVIOContext *pb, MOVAtom atom) { MOVFragment *frag = &c->fragment; MOVTrackExt *trex = NULL; MOVFragmentIndex* index = NULL; int flags, track_id, i; avio_r8(pb); /* version */ flags = avio_rb24(pb); track_id = avio_rb32(pb); if (!track_id) return AVERROR_INVALIDDATA; frag->track_id = track_id; for (i = 0; i < c->trex_count; i++) if (c->trex_data[i].track_id == frag->track_id) { trex = &c->trex_data[i]; break; } if (!trex) { av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n"); return AVERROR_INVALIDDATA; } for (i = 0; i < c->fragment_index_count; i++) { MOVFragmentIndex* candidate = c->fragment_index_data[i]; if (candidate->track_id == frag->track_id) { av_log(c->fc, AV_LOG_DEBUG, "found fragment index for track %u\n", frag->track_id); index = candidate; break; } } frag->base_data_offset = flags & MOV_TFHD_BASE_DATA_OFFSET ? avio_rb64(pb) : flags & MOV_TFHD_DEFAULT_BASE_IS_MOOF ? frag->moof_offset : frag->implicit_offset; frag->stsd_id = flags & MOV_TFHD_STSD_ID ? avio_rb32(pb) : trex->stsd_id; frag->duration = flags & MOV_TFHD_DEFAULT_DURATION ? avio_rb32(pb) : trex->duration; frag->size = flags & MOV_TFHD_DEFAULT_SIZE ? avio_rb32(pb) : trex->size; frag->flags = flags & MOV_TFHD_DEFAULT_FLAGS ? avio_rb32(pb) : trex->flags; frag->time = AV_NOPTS_VALUE; if (index) { int i, found = 0; for (i = index->current_item; i < index->item_count; i++) { if (frag->implicit_offset == index->items[i].moof_offset) { av_log(c->fc, AV_LOG_DEBUG, "found fragment index entry " "for track %u and moof_offset %"PRId64"\n", frag->track_id, index->items[i].moof_offset); frag->time = index->items[i].time; index->current_item = i + 1; found = 1; } } if (!found) { av_log(c->fc, AV_LOG_WARNING, "track %u has a fragment index " "but it doesn't have an (in-order) entry for moof_offset " "%"PRId64"\n", frag->track_id, frag->implicit_offset); } } av_dlog(c->fc, "frag flags 0x%x\n", frag->flags); return 0; } static int mov_read_chap(MOVContext *c, AVIOContext *pb, MOVAtom atom) { c->chapter_track = avio_rb32(pb); return 0; } static int mov_read_trex(MOVContext *c, AVIOContext *pb, MOVAtom atom) { MOVTrackExt *trex; int err; if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data)) return AVERROR_INVALIDDATA; if ((err = av_reallocp_array(&c->trex_data, c->trex_count + 1, sizeof(*c->trex_data))) < 0) { c->trex_count = 0; return err; } c->fc->duration = AV_NOPTS_VALUE; // the duration from mvhd is not representing the whole file when fragments are used. trex = &c->trex_data[c->trex_count++]; avio_r8(pb); /* version */ avio_rb24(pb); /* flags */ trex->track_id = avio_rb32(pb); trex->stsd_id = avio_rb32(pb); trex->duration = avio_rb32(pb); trex->size = avio_rb32(pb); trex->flags = avio_rb32(pb); return 0; } static int mov_read_tfdt(MOVContext *c, AVIOContext *pb, MOVAtom atom) { MOVFragment *frag = &c->fragment; AVStream *st = NULL; MOVStreamContext *sc; int version, i; for (i = 0; i < c->fc->nb_streams; i++) { if (c->fc->streams[i]->id == frag->track_id) { st = c->fc->streams[i]; break; } } if (!st) { av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id); return AVERROR_INVALIDDATA; } sc = st->priv_data; if (sc->pseudo_stream_id + 1 != frag->stsd_id) return 0; version = avio_r8(pb); avio_rb24(pb); /* flags */ if (version) { sc->track_end = avio_rb64(pb); } else { sc->track_end = avio_rb32(pb); } return 0; } static int mov_read_trun(MOVContext *c, AVIOContext *pb, MOVAtom atom) { MOVFragment *frag = &c->fragment; AVStream *st = NULL; MOVStreamContext *sc; MOVStts *ctts_data; uint64_t offset; int64_t dts; int data_offset = 0; unsigned entries, first_sample_flags = frag->flags; int flags, distance, i, found_keyframe = 0, err; for (i = 0; i < c->fc->nb_streams; i++) { if (c->fc->streams[i]->id == frag->track_id) { st = c->fc->streams[i]; break; } } if (!st) { av_log(c->fc, AV_LOG_ERROR, "could not find corresponding track id %d\n", frag->track_id); return AVERROR_INVALIDDATA; } sc = st->priv_data; if (sc->pseudo_stream_id+1 != frag->stsd_id && sc->pseudo_stream_id != -1) return 0; avio_r8(pb); /* version */ flags = avio_rb24(pb); entries = avio_rb32(pb); av_dlog(c->fc, "flags 0x%x entries %d\n", flags, entries); /* Always assume the presence of composition time offsets. * Without this assumption, for instance, we cannot deal with a track in fragmented movies that meet the following. * 1) in the initial movie, there are no samples. * 2) in the first movie fragment, there is only one sample without composition time offset. * 3) in the subsequent movie fragments, there are samples with composition time offset. */ if (!sc->ctts_count && sc->sample_count) { /* Complement ctts table if moov atom doesn't have ctts atom. */ ctts_data = av_realloc(NULL, sizeof(*sc->ctts_data)); if (!ctts_data) return AVERROR(ENOMEM); sc->ctts_data = ctts_data; sc->ctts_data[sc->ctts_count].count = sc->sample_count; sc->ctts_data[sc->ctts_count].duration = 0; sc->ctts_count++; } if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data)) return AVERROR_INVALIDDATA; if ((err = av_reallocp_array(&sc->ctts_data, entries + sc->ctts_count, sizeof(*sc->ctts_data))) < 0) { sc->ctts_count = 0; return err; } if (flags & MOV_TRUN_DATA_OFFSET) data_offset = avio_rb32(pb); if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS) first_sample_flags = avio_rb32(pb); dts = sc->track_end - sc->time_offset; offset = frag->base_data_offset + data_offset; distance = 0; av_dlog(c->fc, "first sample flags 0x%x\n", first_sample_flags); for (i = 0; i < entries && !pb->eof_reached; i++) { unsigned sample_size = frag->size; int sample_flags = i ? frag->flags : first_sample_flags; unsigned sample_duration = frag->duration; int keyframe = 0; if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(pb); if (flags & MOV_TRUN_SAMPLE_SIZE) sample_size = avio_rb32(pb); if (flags & MOV_TRUN_SAMPLE_FLAGS) sample_flags = avio_rb32(pb); sc->ctts_data[sc->ctts_count].count = 1; sc->ctts_data[sc->ctts_count].duration = (flags & MOV_TRUN_SAMPLE_CTS) ? avio_rb32(pb) : 0; mov_update_dts_shift(sc, sc->ctts_data[sc->ctts_count].duration); if (frag->time != AV_NOPTS_VALUE) { if (c->use_mfra_for == FF_MOV_FLAG_MFRA_PTS) { int64_t pts = frag->time; av_log(c->fc, AV_LOG_DEBUG, "found frag time %"PRId64 " sc->dts_shift %d ctts.duration %d" " sc->time_offset %"PRId64" flags & MOV_TRUN_SAMPLE_CTS %d\n", pts, sc->dts_shift, sc->ctts_data[sc->ctts_count].duration, sc->time_offset, flags & MOV_TRUN_SAMPLE_CTS); dts = pts - sc->dts_shift; if (flags & MOV_TRUN_SAMPLE_CTS) { dts -= sc->ctts_data[sc->ctts_count].duration; } else { dts -= sc->time_offset; } av_log(c->fc, AV_LOG_DEBUG, "calculated into dts %"PRId64"\n", dts); } else { dts = frag->time; av_log(c->fc, AV_LOG_DEBUG, "found frag time %"PRId64 ", using it for dts\n", dts); } frag->time = AV_NOPTS_VALUE; } sc->ctts_count++; if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) keyframe = 1; else if (!found_keyframe) keyframe = found_keyframe = !(sample_flags & (MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC | MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES)); if (keyframe) distance = 0; av_add_index_entry(st, offset, dts, sample_size, distance, keyframe ? AVINDEX_KEYFRAME : 0); av_dlog(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", " "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i, offset, dts, sample_size, distance, keyframe); distance++; dts += sample_duration; offset += sample_size; sc->data_size += sample_size; sc->duration_for_fps += sample_duration; sc->nb_frames_for_fps ++; } if (pb->eof_reached) return AVERROR_EOF; frag->implicit_offset = offset; st->duration = sc->track_end = dts + sc->time_offset; return 0; } /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */ /* like the files created with Adobe Premiere 5.0, for samples see */ /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */ static int mov_read_wide(MOVContext *c, AVIOContext *pb, MOVAtom atom) { int err; if (atom.size < 8) return 0; /* continue */ if (avio_rb32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */ avio_skip(pb, atom.size - 4); return 0; } atom.type = avio_rl32(pb); atom.size -= 8; if (atom.type != MKTAG('m','d','a','t')) { avio_skip(pb, atom.size); return 0; } err = mov_read_mdat(c, pb, atom); return err; } static int mov_read_cmov(MOVContext *c, AVIOContext *pb, MOVAtom atom) { #if CONFIG_ZLIB AVIOContext ctx; uint8_t *cmov_data; uint8_t *moov_data; /* uncompressed data */ long cmov_len, moov_len; int ret = -1; avio_rb32(pb); /* dcom atom */ if (avio_rl32(pb) != MKTAG('d','c','o','m')) return AVERROR_INVALIDDATA; if (avio_rl32(pb) != MKTAG('z','l','i','b')) { av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !\n"); return AVERROR_INVALIDDATA; } avio_rb32(pb); /* cmvd atom */ if (avio_rl32(pb) != MKTAG('c','m','v','d')) return AVERROR_INVALIDDATA; moov_len = avio_rb32(pb); /* uncompressed size */ cmov_len = atom.size - 6 * 4; cmov_data = av_malloc(cmov_len); if (!cmov_data) return AVERROR(ENOMEM); moov_data = av_malloc(moov_len); if (!moov_data) { av_free(cmov_data); return AVERROR(ENOMEM); } avio_read(pb, cmov_data, cmov_len); if (uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK) goto free_and_return; if (ffio_init_context(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0) goto free_and_return; atom.type = MKTAG('m','o','o','v'); atom.size = moov_len; ret = mov_read_default(c, &ctx, atom); free_and_return: av_free(moov_data); av_free(cmov_data); return ret; #else av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n"); return AVERROR(ENOSYS); #endif } /* edit list atom */ static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom) { MOVStreamContext *sc; int i, edit_count, version; if (c->fc->nb_streams < 1 || c->ignore_editlist) return 0; sc = c->fc->streams[c->fc->nb_streams-1]->priv_data; version = avio_r8(pb); /* version */ avio_rb24(pb); /* flags */ edit_count = avio_rb32(pb); /* entries */ if (!edit_count) return 0; if (sc->elst_data) av_log(c->fc, AV_LOG_WARNING, "Duplicated ELST atom\n"); av_free(sc->elst_data); sc->elst_count = 0; sc->elst_data = av_malloc_array(edit_count, sizeof(*sc->elst_data)); if (!sc->elst_data) return AVERROR(ENOMEM); av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count); for (i = 0; i < edit_count && !pb->eof_reached; i++) { MOVElst *e = &sc->elst_data[i]; if (version == 1) { e->duration = avio_rb64(pb); e->time = avio_rb64(pb); } else { e->duration = avio_rb32(pb); /* segment duration */ e->time = (int32_t)avio_rb32(pb); /* media time */ } e->rate = avio_rb32(pb) / 65536.0; av_dlog(c->fc, "duration=%"PRId64" time=%"PRId64" rate=%f\n", e->duration, e->time, e->rate); } sc->elst_count = i; return 0; } static int mov_read_tmcd(MOVContext *c, AVIOContext *pb, MOVAtom atom) { MOVStreamContext *sc; if (c->fc->nb_streams < 1) return AVERROR_INVALIDDATA; sc = c->fc->streams[c->fc->nb_streams - 1]->priv_data; sc->timecode_track = avio_rb32(pb); return 0; } static int mov_read_uuid(MOVContext *c, AVIOContext *pb, MOVAtom atom) { int ret; uint8_t uuid[16]; static const uint8_t uuid_isml_manifest[] = { 0xa5, 0xd4, 0x0b, 0x30, 0xe8, 0x14, 0x11, 0xdd, 0xba, 0x2f, 0x08, 0x00, 0x20, 0x0c, 0x9a, 0x66 }; if (atom.size < sizeof(uuid) || atom.size == INT64_MAX) return AVERROR_INVALIDDATA; ret = avio_read(pb, uuid, sizeof(uuid)); if (ret < 0) { return ret; } else if (ret != sizeof(uuid)) { return AVERROR_INVALIDDATA; } if (!memcmp(uuid, uuid_isml_manifest, sizeof(uuid))) { uint8_t *buffer, *ptr; char *endptr; size_t len = atom.size - sizeof(uuid); if (len < 4) { return AVERROR_INVALIDDATA; } ret = avio_skip(pb, 4); // zeroes len -= 4; buffer = av_mallocz(len + 1); if (!buffer) { return AVERROR(ENOMEM); } ret = avio_read(pb, buffer, len); if (ret < 0) { av_free(buffer); return ret; } else if (ret != len) { av_free(buffer); return AVERROR_INVALIDDATA; } ptr = buffer; while ((ptr = av_stristr(ptr, "systemBitrate=\""))) { ptr += sizeof("systemBitrate=\"") - 1; c->bitrates_count++; c->bitrates = av_realloc_f(c->bitrates, c->bitrates_count, sizeof(*c->bitrates)); if (!c->bitrates) { c->bitrates_count = 0; av_free(buffer); return AVERROR(ENOMEM); } errno = 0; ret = strtol(ptr, &endptr, 10); if (ret < 0 || errno || *endptr != '"') { c->bitrates[c->bitrates_count - 1] = 0; } else { c->bitrates[c->bitrates_count - 1] = ret; } } av_free(buffer); } return 0; } static int mov_read_free(MOVContext *c, AVIOContext *pb, MOVAtom atom) { int ret; uint8_t content[16]; if (atom.size < 8) return 0; ret = avio_read(pb, content, FFMIN(sizeof(content), atom.size)); if (ret < 0) return ret; if ( !c->found_moov && !c->found_mdat && !memcmp(content, "Anevia\x1A\x1A", 8) && c->use_mfra_for == FF_MOV_FLAG_MFRA_AUTO) { c->use_mfra_for = FF_MOV_FLAG_MFRA_PTS; } return 0; } static const MOVParseTableEntry mov_default_parse_table[] = { { MKTAG('A','C','L','R'), mov_read_avid }, { MKTAG('A','P','R','G'), mov_read_avid }, { MKTAG('A','A','L','P'), mov_read_avid }, { MKTAG('A','R','E','S'), mov_read_ares }, { MKTAG('a','v','s','s'), mov_read_avss }, { MKTAG('c','h','p','l'), mov_read_chpl }, { MKTAG('c','o','6','4'), mov_read_stco }, { MKTAG('c','o','l','r'), mov_read_colr }, { MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */ { MKTAG('d','i','n','f'), mov_read_default }, { MKTAG('d','r','e','f'), mov_read_dref }, { MKTAG('e','d','t','s'), mov_read_default }, { MKTAG('e','l','s','t'), mov_read_elst }, { MKTAG('e','n','d','a'), mov_read_enda }, { MKTAG('f','i','e','l'), mov_read_fiel }, { MKTAG('f','t','y','p'), mov_read_ftyp }, { MKTAG('g','l','b','l'), mov_read_glbl }, { MKTAG('h','d','l','r'), mov_read_hdlr }, { MKTAG('i','l','s','t'), mov_read_ilst }, { MKTAG('j','p','2','h'), mov_read_jp2h }, { MKTAG('m','d','a','t'), mov_read_mdat }, { MKTAG('m','d','h','d'), mov_read_mdhd }, { MKTAG('m','d','i','a'), mov_read_default }, { MKTAG('m','e','t','a'), mov_read_meta }, { MKTAG('m','i','n','f'), mov_read_default }, { MKTAG('m','o','o','f'), mov_read_moof }, { MKTAG('m','o','o','v'), mov_read_moov }, { MKTAG('m','v','e','x'), mov_read_default }, { MKTAG('m','v','h','d'), mov_read_mvhd }, { MKTAG('S','M','I',' '), mov_read_svq3 }, { MKTAG('a','l','a','c'), mov_read_alac }, /* alac specific atom */ { MKTAG('a','v','c','C'), mov_read_glbl }, { MKTAG('p','a','s','p'), mov_read_pasp }, { MKTAG('s','t','b','l'), mov_read_default }, { MKTAG('s','t','c','o'), mov_read_stco }, { MKTAG('s','t','p','s'), mov_read_stps }, { MKTAG('s','t','r','f'), mov_read_strf }, { MKTAG('s','t','s','c'), mov_read_stsc }, { MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */ { MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */ { MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */ { MKTAG('s','t','t','s'), mov_read_stts }, { MKTAG('s','t','z','2'), mov_read_stsz }, /* compact sample size */ { MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */ { MKTAG('t','f','d','t'), mov_read_tfdt }, { MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */ { MKTAG('t','r','a','k'), mov_read_trak }, { MKTAG('t','r','a','f'), mov_read_default }, { MKTAG('t','r','e','f'), mov_read_default }, { MKTAG('t','m','c','d'), mov_read_tmcd }, { MKTAG('c','h','a','p'), mov_read_chap }, { MKTAG('t','r','e','x'), mov_read_trex }, { MKTAG('t','r','u','n'), mov_read_trun }, { MKTAG('u','d','t','a'), mov_read_default }, { MKTAG('w','a','v','e'), mov_read_wave }, { MKTAG('e','s','d','s'), mov_read_esds }, { MKTAG('d','a','c','3'), mov_read_dac3 }, /* AC-3 info */ { MKTAG('d','e','c','3'), mov_read_dec3 }, /* EAC-3 info */ { MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */ { MKTAG('w','f','e','x'), mov_read_wfex }, { MKTAG('c','m','o','v'), mov_read_cmov }, { MKTAG('c','h','a','n'), mov_read_chan }, /* channel layout */ { MKTAG('d','v','c','1'), mov_read_dvc1 }, { MKTAG('s','b','g','p'), mov_read_sbgp }, { MKTAG('h','v','c','C'), mov_read_glbl }, { MKTAG('u','u','i','d'), mov_read_uuid }, { MKTAG('C','i','n', 0x8e), mov_read_targa_y216 }, { MKTAG('f','r','e','e'), mov_read_free }, { MKTAG('-','-','-','-'), mov_read_custom }, { 0, NULL } }; static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom) { int64_t total_size = 0; MOVAtom a; int i; if (c->atom_depth > 10) { av_log(c->fc, AV_LOG_ERROR, "Atoms too deeply nested\n"); return AVERROR_INVALIDDATA; } c->atom_depth ++; if (atom.size < 0) atom.size = INT64_MAX; while (total_size + 8 <= atom.size && !avio_feof(pb)) { int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL; a.size = atom.size; a.type=0; if (atom.size >= 8) { a.size = avio_rb32(pb); a.type = avio_rl32(pb); if (a.type == MKTAG('f','r','e','e') && a.size >= 8 && c->moov_retry) { uint8_t buf[8]; uint32_t *type = (uint32_t *)buf + 1; avio_read(pb, buf, 8); avio_seek(pb, -8, SEEK_CUR); if (*type == MKTAG('m','v','h','d') || *type == MKTAG('c','m','o','v')) { av_log(c->fc, AV_LOG_ERROR, "Detected moov in a free atom.\n"); a.type = MKTAG('m','o','o','v'); } } if (atom.type != MKTAG('r','o','o','t') && atom.type != MKTAG('m','o','o','v')) { if (a.type == MKTAG('t','r','a','k') || a.type == MKTAG('m','d','a','t')) { av_log(c->fc, AV_LOG_ERROR, "Broken file, trak/mdat not at top-level\n"); avio_skip(pb, -8); c->atom_depth --; return 0; } } total_size += 8; if (a.size == 1) { /* 64 bit extended size */ a.size = avio_rb64(pb) - 8; total_size += 8; } } av_dlog(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n", a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size); if (a.size == 0) { a.size = atom.size - total_size + 8; } a.size -= 8; if (a.size < 0) break; a.size = FFMIN(a.size, atom.size - total_size); for (i = 0; mov_default_parse_table[i].type; i++) if (mov_default_parse_table[i].type == a.type) { parse = mov_default_parse_table[i].parse; break; } // container is user data if (!parse && (atom.type == MKTAG('u','d','t','a') || atom.type == MKTAG('i','l','s','t'))) parse = mov_read_udta_string; if (!parse) { /* skip leaf atoms data */ avio_skip(pb, a.size); } else { int64_t start_pos = avio_tell(pb); int64_t left; int err = parse(c, pb, a); if (err < 0) { c->atom_depth --; return err; } if (c->found_moov && c->found_mdat && ((!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX) || start_pos + a.size == avio_size(pb))) { if (!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX) c->next_root_atom = start_pos + a.size; c->atom_depth --; return 0; } left = a.size - avio_tell(pb) + start_pos; if (left > 0) /* skip garbage at atom end */ avio_skip(pb, left); else if (left < 0) { av_log(c->fc, AV_LOG_WARNING, "overread end of atom '%.4s' by %"PRId64" bytes\n", (char*)&a.type, -left); avio_seek(pb, left, SEEK_CUR); } } total_size += a.size; } if (total_size < atom.size && atom.size < 0x7ffff) avio_skip(pb, atom.size - total_size); c->atom_depth --; return 0; } static int mov_probe(AVProbeData *p) { int64_t offset; uint32_t tag; int score = 0; int moov_offset = -1; /* check file header */ offset = 0; for (;;) { /* ignore invalid offset */ if ((offset + 8) > (unsigned int)p->buf_size) break; tag = AV_RL32(p->buf + offset + 4); switch(tag) { /* check for obvious tags */ case MKTAG('m','o','o','v'): moov_offset = offset + 4; case MKTAG('m','d','a','t'): case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */ case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */ case MKTAG('f','t','y','p'): if (AV_RB32(p->buf+offset) < 8 && (AV_RB32(p->buf+offset) != 1 || offset + 12 > (unsigned int)p->buf_size || AV_RB64(p->buf+offset + 8) == 0)) { score = FFMAX(score, AVPROBE_SCORE_EXTENSION); } else if (tag == MKTAG('f','t','y','p') && AV_RL32(p->buf + offset + 8) == MKTAG('j','p','2',' ')) { score = FFMAX(score, 5); } else { score = AVPROBE_SCORE_MAX; } offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset; break; /* those are more common words, so rate then a bit less */ case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */ case MKTAG('w','i','d','e'): case MKTAG('f','r','e','e'): case MKTAG('j','u','n','k'): case MKTAG('p','i','c','t'): score = FFMAX(score, AVPROBE_SCORE_MAX - 5); offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset; break; case MKTAG(0x82,0x82,0x7f,0x7d): case MKTAG('s','k','i','p'): case MKTAG('u','u','i','d'): case MKTAG('p','r','f','l'): /* if we only find those cause probedata is too small at least rate them */ score = FFMAX(score, AVPROBE_SCORE_EXTENSION); offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset; break; default: offset = FFMAX(4, AV_RB32(p->buf+offset)) + offset; } } if(score > AVPROBE_SCORE_MAX - 50 && moov_offset != -1) { /* moov atom in the header - we should make sure that this is not a * MOV-packed MPEG-PS */ offset = moov_offset; while(offset < (p->buf_size - 16)){ /* Sufficient space */ /* We found an actual hdlr atom */ if(AV_RL32(p->buf + offset ) == MKTAG('h','d','l','r') && AV_RL32(p->buf + offset + 8) == MKTAG('m','h','l','r') && AV_RL32(p->buf + offset + 12) == MKTAG('M','P','E','G')){ av_log(NULL, AV_LOG_WARNING, "Found media data tag MPEG indicating this is a MOV-packed MPEG-PS.\n"); /* We found a media handler reference atom describing an * MPEG-PS-in-MOV, return a * low score to force expanding the probe window until * mpegps_probe finds what it needs */ return 5; }else /* Keep looking */ offset+=2; } } return score; } // must be done after parsing all trak because there's no order requirement static void mov_read_chapters(AVFormatContext *s) { MOVContext *mov = s->priv_data; AVStream *st = NULL; MOVStreamContext *sc; int64_t cur_pos; int i; for (i = 0; i < s->nb_streams; i++) if (s->streams[i]->id == mov->chapter_track) { st = s->streams[i]; break; } if (!st) { av_log(s, AV_LOG_ERROR, "Referenced QT chapter track not found\n"); return; } st->discard = AVDISCARD_ALL; sc = st->priv_data; cur_pos = avio_tell(sc->pb); for (i = 0; i < st->nb_index_entries; i++) { AVIndexEntry *sample = &st->index_entries[i]; int64_t end = i+1 < st->nb_index_entries ? st->index_entries[i+1].timestamp : st->duration; uint8_t *title; uint16_t ch; int len, title_len; if (end < sample->timestamp) { av_log(s, AV_LOG_WARNING, "ignoring stream duration which is shorter than chapters\n"); end = AV_NOPTS_VALUE; } if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) { av_log(s, AV_LOG_ERROR, "Chapter %d not found in file\n", i); goto finish; } // the first two bytes are the length of the title len = avio_rb16(sc->pb); if (len > sample->size-2) continue; title_len = 2*len + 1; if (!(title = av_mallocz(title_len))) goto finish; // The samples could theoretically be in any encoding if there's an encd // atom following, but in practice are only utf-8 or utf-16, distinguished // instead by the presence of a BOM if (!len) { title[0] = 0; } else { ch = avio_rb16(sc->pb); if (ch == 0xfeff) avio_get_str16be(sc->pb, len, title, title_len); else if (ch == 0xfffe) avio_get_str16le(sc->pb, len, title, title_len); else { AV_WB16(title, ch); if (len == 1 || len == 2) title[len] = 0; else avio_get_str(sc->pb, INT_MAX, title + 2, len - 1); } } avpriv_new_chapter(s, i, st->time_base, sample->timestamp, end, title); av_freep(&title); } finish: avio_seek(sc->pb, cur_pos, SEEK_SET); } static int parse_timecode_in_framenum_format(AVFormatContext *s, AVStream *st, uint32_t value, int flags) { AVTimecode tc; char buf[AV_TIMECODE_STR_SIZE]; AVRational rate = {st->codec->time_base.den, st->codec->time_base.num}; int ret = av_timecode_init(&tc, rate, flags, 0, s); if (ret < 0) return ret; av_dict_set(&st->metadata, "timecode", av_timecode_make_string(&tc, buf, value), 0); return 0; } static int mov_read_timecode_track(AVFormatContext *s, AVStream *st) { MOVStreamContext *sc = st->priv_data; int flags = 0; int64_t cur_pos = avio_tell(sc->pb); uint32_t value; if (!st->nb_index_entries) return -1; avio_seek(sc->pb, st->index_entries->pos, SEEK_SET); value = avio_rb32(s->pb); if (sc->tmcd_flags & 0x0001) flags |= AV_TIMECODE_FLAG_DROPFRAME; if (sc->tmcd_flags & 0x0002) flags |= AV_TIMECODE_FLAG_24HOURSMAX; if (sc->tmcd_flags & 0x0004) flags |= AV_TIMECODE_FLAG_ALLOWNEGATIVE; /* Assume Counter flag is set to 1 in tmcd track (even though it is likely * not the case) and thus assume "frame number format" instead of QT one. * No sample with tmcd track can be found with a QT timecode at the moment, * despite what the tmcd track "suggests" (Counter flag set to 0 means QT * format). */ parse_timecode_in_framenum_format(s, st, value, flags); avio_seek(sc->pb, cur_pos, SEEK_SET); return 0; } static int mov_read_close(AVFormatContext *s) { MOVContext *mov = s->priv_data; int i, j; for (i = 0; i < s->nb_streams; i++) { AVStream *st = s->streams[i]; MOVStreamContext *sc = st->priv_data; av_freep(&sc->ctts_data); for (j = 0; j < sc->drefs_count; j++) { av_freep(&sc->drefs[j].path); av_freep(&sc->drefs[j].dir); } av_freep(&sc->drefs); sc->drefs_count = 0; if (!sc->pb_is_copied) avio_close(sc->pb); sc->pb = NULL; av_freep(&sc->chunk_offsets); av_freep(&sc->stsc_data); av_freep(&sc->sample_sizes); av_freep(&sc->keyframes); av_freep(&sc->stts_data); av_freep(&sc->stps_data); av_freep(&sc->elst_data); av_freep(&sc->rap_group); av_freep(&sc->display_matrix); } if (mov->dv_demux) { avformat_free_context(mov->dv_fctx); mov->dv_fctx = NULL; } av_freep(&mov->trex_data); av_freep(&mov->bitrates); for (i = 0; i < mov->fragment_index_count; i++) { MOVFragmentIndex* index = mov->fragment_index_data[i]; av_freep(&index->items); av_freep(&mov->fragment_index_data[i]); } av_freep(&mov->fragment_index_data); return 0; } static int tmcd_is_referenced(AVFormatContext *s, int tmcd_id) { int i; for (i = 0; i < s->nb_streams; i++) { AVStream *st = s->streams[i]; MOVStreamContext *sc = st->priv_data; if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && sc->timecode_track == tmcd_id) return 1; } return 0; } /* look for a tmcd track not referenced by any video track, and export it globally */ static void export_orphan_timecode(AVFormatContext *s) { int i; for (i = 0; i < s->nb_streams; i++) { AVStream *st = s->streams[i]; if (st->codec->codec_tag == MKTAG('t','m','c','d') && !tmcd_is_referenced(s, i + 1)) { AVDictionaryEntry *tcr = av_dict_get(st->metadata, "timecode", NULL, 0); if (tcr) { av_dict_set(&s->metadata, "timecode", tcr->value, 0); break; } } } } static int read_tfra(MOVContext *mov, AVIOContext *f) { MOVFragmentIndex* index = NULL; int version, fieldlength, i, j, err; int64_t pos = avio_tell(f); uint32_t size = avio_rb32(f); if (avio_rb32(f) != MKBETAG('t', 'f', 'r', 'a')) { return -1; } av_log(mov->fc, AV_LOG_VERBOSE, "found tfra\n"); index = av_mallocz(sizeof(MOVFragmentIndex)); if (!index) { return AVERROR(ENOMEM); } mov->fragment_index_count++; if ((err = av_reallocp(&mov->fragment_index_data, mov->fragment_index_count * sizeof(MOVFragmentIndex*))) < 0) { av_freep(&index); return err; } mov->fragment_index_data[mov->fragment_index_count - 1] = index; version = avio_r8(f); avio_rb24(f); index->track_id = avio_rb32(f); fieldlength = avio_rb32(f); index->item_count = avio_rb32(f); index->items = av_mallocz( index->item_count * sizeof(MOVFragmentIndexItem)); if (!index->items) { return AVERROR(ENOMEM); } for (i = 0; i < index->item_count; i++) { int64_t time, offset; if (version == 1) { time = avio_rb64(f); offset = avio_rb64(f); } else { time = avio_rb32(f); offset = avio_rb32(f); } index->items[i].time = time; index->items[i].moof_offset = offset; for (j = 0; j < ((fieldlength >> 4) & 3) + 1; j++) avio_r8(f); for (j = 0; j < ((fieldlength >> 2) & 3) + 1; j++) avio_r8(f); for (j = 0; j < ((fieldlength >> 0) & 3) + 1; j++) avio_r8(f); } avio_seek(f, pos + size, SEEK_SET); return 0; } static int mov_read_mfra(MOVContext *c, AVIOContext *f) { int64_t stream_size = avio_size(f); int64_t original_pos = avio_tell(f); int64_t seek_ret; int32_t mfra_size; int ret = -1; if ((seek_ret = avio_seek(f, stream_size - 4, SEEK_SET)) < 0) { ret = seek_ret; goto fail; } mfra_size = avio_rb32(f); if (mfra_size < 0 || mfra_size > stream_size) { av_log(c->fc, AV_LOG_DEBUG, "doesn't look like mfra (unreasonable size)\n"); goto fail; } if ((seek_ret = avio_seek(f, -mfra_size, SEEK_CUR)) < 0) { ret = seek_ret; goto fail; } if (avio_rb32(f) != mfra_size) { av_log(c->fc, AV_LOG_DEBUG, "doesn't look like mfra (size mismatch)\n"); goto fail; } if (avio_rb32(f) != MKBETAG('m', 'f', 'r', 'a')) { av_log(c->fc, AV_LOG_DEBUG, "doesn't look like mfra (tag mismatch)\n"); goto fail; } ret = 0; av_log(c->fc, AV_LOG_VERBOSE, "stream has mfra\n"); while (!read_tfra(c, f)) { /* Empty */ } fail: seek_ret = avio_seek(f, original_pos, SEEK_SET); if (seek_ret < 0) { av_log(c->fc, AV_LOG_ERROR, "failed to seek back after looking for mfra\n"); ret = seek_ret; } return ret; } static int mov_read_header(AVFormatContext *s) { MOVContext *mov = s->priv_data; AVIOContext *pb = s->pb; int j, err; MOVAtom atom = { AV_RL32("root") }; int i; mov->fc = s; /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */ if (pb->seekable) atom.size = avio_size(pb); else atom.size = INT64_MAX; /* check MOV header */ do { if (mov->moov_retry) avio_seek(pb, 0, SEEK_SET); if ((err = mov_read_default(mov, pb, atom)) < 0) { av_log(s, AV_LOG_ERROR, "error reading header\n"); mov_read_close(s); return err; } } while (pb->seekable && !mov->found_moov && !mov->moov_retry++); if (!mov->found_moov) { av_log(s, AV_LOG_ERROR, "moov atom not found\n"); mov_read_close(s); return AVERROR_INVALIDDATA; } av_dlog(mov->fc, "on_parse_exit_offset=%"PRId64"\n", avio_tell(pb)); if (pb->seekable) { if (mov->chapter_track > 0) mov_read_chapters(s); for (i = 0; i < s->nb_streams; i++) if (s->streams[i]->codec->codec_tag == AV_RL32("tmcd")) mov_read_timecode_track(s, s->streams[i]); } /* copy timecode metadata from tmcd tracks to the related video streams */ for (i = 0; i < s->nb_streams; i++) { AVStream *st = s->streams[i]; MOVStreamContext *sc = st->priv_data; if (sc->timecode_track > 0) { AVDictionaryEntry *tcr; int tmcd_st_id = -1; for (j = 0; j < s->nb_streams; j++) if (s->streams[j]->id == sc->timecode_track) tmcd_st_id = j; if (tmcd_st_id < 0 || tmcd_st_id == i) continue; tcr = av_dict_get(s->streams[tmcd_st_id]->metadata, "timecode", NULL, 0); if (tcr) av_dict_set(&st->metadata, "timecode", tcr->value, 0); } } export_orphan_timecode(s); for (i = 0; i < s->nb_streams; i++) { AVStream *st = s->streams[i]; MOVStreamContext *sc = st->priv_data; fix_timescale(mov, sc); if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO && st->codec->codec_id == AV_CODEC_ID_AAC) { st->skip_samples = sc->start_pad; } if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && sc->nb_frames_for_fps > 0 && sc->duration_for_fps > 0) av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den, sc->time_scale*(int64_t)sc->nb_frames_for_fps, sc->duration_for_fps, INT_MAX); if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) { if (st->codec->width <= 0 || st->codec->height <= 0) { st->codec->width = sc->width; st->codec->height = sc->height; } if (st->codec->codec_id == AV_CODEC_ID_DVD_SUBTITLE) { if ((err = mov_rewrite_dvd_sub_extradata(st)) < 0) return err; } } } if (mov->trex_data) { for (i = 0; i < s->nb_streams; i++) { AVStream *st = s->streams[i]; MOVStreamContext *sc = st->priv_data; if (st->duration > 0) st->codec->bit_rate = sc->data_size * 8 * sc->time_scale / st->duration; } } if (mov->use_mfra_for > 0) { for (i = 0; i < s->nb_streams; i++) { AVStream *st = s->streams[i]; MOVStreamContext *sc = st->priv_data; if (sc->duration_for_fps > 0) { st->codec->bit_rate = sc->data_size * 8 * sc->time_scale / sc->duration_for_fps; } } } for (i = 0; i < mov->bitrates_count && i < s->nb_streams; i++) { if (mov->bitrates[i]) { s->streams[i]->codec->bit_rate = mov->bitrates[i]; } } ff_rfps_calculate(s); for (i = 0; i < s->nb_streams; i++) { AVStream *st = s->streams[i]; MOVStreamContext *sc = st->priv_data; switch (st->codec->codec_type) { case AVMEDIA_TYPE_AUDIO: err = ff_replaygain_export(st, s->metadata); if (err < 0) { mov_read_close(s); return err; } break; case AVMEDIA_TYPE_VIDEO: if (sc->display_matrix) { AVPacketSideData *sd, *tmp; tmp = av_realloc_array(st->side_data, st->nb_side_data + 1, sizeof(*tmp)); if (!tmp) return AVERROR(ENOMEM); st->side_data = tmp; st->nb_side_data++; sd = &st->side_data[st->nb_side_data - 1]; sd->type = AV_PKT_DATA_DISPLAYMATRIX; sd->size = sizeof(int32_t) * 9; sd->data = (uint8_t*)sc->display_matrix; sc->display_matrix = NULL; } break; } } return 0; } static AVIndexEntry *mov_find_next_sample(AVFormatContext *s, AVStream **st) { AVIndexEntry *sample = NULL; int64_t best_dts = INT64_MAX; int i; for (i = 0; i < s->nb_streams; i++) { AVStream *avst = s->streams[i]; MOVStreamContext *msc = avst->priv_data; if (msc->pb && msc->current_sample < avst->nb_index_entries) { AVIndexEntry *current_sample = &avst->index_entries[msc->current_sample]; int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale); av_dlog(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts); if (!sample || (!s->pb->seekable && current_sample->pos < sample->pos) || (s->pb->seekable && ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb && ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) || (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) { sample = current_sample; best_dts = dts; *st = avst; } } } return sample; } static int mov_read_packet(AVFormatContext *s, AVPacket *pkt) { MOVContext *mov = s->priv_data; MOVStreamContext *sc; AVIndexEntry *sample; AVStream *st = NULL; int ret; mov->fc = s; retry: sample = mov_find_next_sample(s, &st); if (!sample) { mov->found_mdat = 0; if (!mov->next_root_atom) return AVERROR_EOF; avio_seek(s->pb, mov->next_root_atom, SEEK_SET); mov->next_root_atom = 0; if (mov_read_default(mov, s->pb, (MOVAtom){ AV_RL32("root"), INT64_MAX }) < 0 || avio_feof(s->pb)) return AVERROR_EOF; av_dlog(s, "read fragments, offset 0x%"PRIx64"\n", avio_tell(s->pb)); goto retry; } sc = st->priv_data; /* must be done just before reading, to avoid infinite loop on sample */ sc->current_sample++; if (mov->next_root_atom) { sample->pos = FFMIN(sample->pos, mov->next_root_atom); sample->size = FFMIN(sample->size, (mov->next_root_atom - sample->pos)); } if (st->discard != AVDISCARD_ALL) { if (avio_seek(sc->pb, sample->pos, SEEK_SET) != sample->pos) { av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n", sc->ffindex, sample->pos); return AVERROR_INVALIDDATA; } ret = av_get_packet(sc->pb, pkt, sample->size); if (ret < 0) return ret; if (sc->has_palette) { uint8_t *pal; pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE); if (!pal) { av_log(mov->fc, AV_LOG_ERROR, "Cannot append palette to packet\n"); } else { memcpy(pal, sc->palette, AVPALETTE_SIZE); sc->has_palette = 0; } } #if CONFIG_DV_DEMUXER if (mov->dv_demux && sc->dv_audio_container) { avpriv_dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size, pkt->pos); av_free(pkt->data); pkt->size = 0; ret = avpriv_dv_get_packet(mov->dv_demux, pkt); if (ret < 0) return ret; } #endif } pkt->stream_index = sc->ffindex; pkt->dts = sample->timestamp; if (sc->ctts_data && sc->ctts_index < sc->ctts_count) { pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration; /* update ctts context */ sc->ctts_sample++; if (sc->ctts_index < sc->ctts_count && sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) { sc->ctts_index++; sc->ctts_sample = 0; } if (sc->wrong_dts) pkt->dts = AV_NOPTS_VALUE; } else { int64_t next_dts = (sc->current_sample < st->nb_index_entries) ? st->index_entries[sc->current_sample].timestamp : st->duration; pkt->duration = next_dts - pkt->dts; pkt->pts = pkt->dts; } if (st->discard == AVDISCARD_ALL) goto retry; pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? AV_PKT_FLAG_KEY : 0; pkt->pos = sample->pos; av_dlog(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n", pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration); return 0; } static int mov_seek_stream(AVFormatContext *s, AVStream *st, int64_t timestamp, int flags) { MOVStreamContext *sc = st->priv_data; int sample, time_sample; int i; sample = av_index_search_timestamp(st, timestamp, flags); av_dlog(s, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample); if (sample < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp) sample = 0; if (sample < 0) /* not sure what to do */ return AVERROR_INVALIDDATA; sc->current_sample = sample; av_dlog(s, "stream %d, found sample %d\n", st->index, sc->current_sample); /* adjust ctts index */ if (sc->ctts_data) { time_sample = 0; for (i = 0; i < sc->ctts_count; i++) { int next = time_sample + sc->ctts_data[i].count; if (next > sc->current_sample) { sc->ctts_index = i; sc->ctts_sample = sc->current_sample - time_sample; break; } time_sample = next; } } return sample; } static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags) { AVStream *st; int64_t seek_timestamp, timestamp; int sample; int i; if (stream_index >= s->nb_streams) return AVERROR_INVALIDDATA; st = s->streams[stream_index]; sample = mov_seek_stream(s, st, sample_time, flags); if (sample < 0) return sample; /* adjust seek timestamp to found sample timestamp */ seek_timestamp = st->index_entries[sample].timestamp; for (i = 0; i < s->nb_streams; i++) { MOVStreamContext *sc = s->streams[i]->priv_data; st = s->streams[i]; st->skip_samples = (sample_time <= 0) ? sc->start_pad : 0; if (stream_index == i) continue; timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base); mov_seek_stream(s, st, timestamp, flags); } return 0; } #define OFFSET(x) offsetof(MOVContext, x) #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM static const AVOption mov_options[] = { {"use_absolute_path", "allow using absolute path when opening alias, this is a possible security issue", OFFSET(use_absolute_path), FF_OPT_TYPE_INT, {.i64 = 0}, 0, 1, FLAGS}, {"ignore_editlist", "", OFFSET(ignore_editlist), FF_OPT_TYPE_INT, {.i64 = 0}, 0, 1, FLAGS}, {"use_mfra_for", "use mfra for fragment timestamps", OFFSET(use_mfra_for), FF_OPT_TYPE_INT, {.i64 = FF_MOV_FLAG_MFRA_AUTO}, -1, FF_MOV_FLAG_MFRA_PTS, FLAGS, "use_mfra_for"}, {"auto", "auto", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_MFRA_AUTO}, 0, 0, FLAGS, "use_mfra_for" }, {"dts", "dts", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_MFRA_DTS}, 0, 0, FLAGS, "use_mfra_for" }, {"pts", "pts", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_MFRA_PTS}, 0, 0, FLAGS, "use_mfra_for" }, { "export_all", "Export unrecognized metadata entries", OFFSET(export_all), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, .flags = FLAGS }, { "export_xmp", "Export full XMP metadata", OFFSET(export_xmp), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, .flags = FLAGS }, { NULL }, }; static const AVClass mov_class = { .class_name = "mov,mp4,m4a,3gp,3g2,mj2", .item_name = av_default_item_name, .option = mov_options, .version = LIBAVUTIL_VERSION_INT, }; AVInputFormat ff_mov_demuxer = { .name = "mov,mp4,m4a,3gp,3g2,mj2", .long_name = NULL_IF_CONFIG_SMALL("QuickTime / MOV"), .priv_class = &mov_class, .priv_data_size = sizeof(MOVContext), .extensions = "mov,mp4,m4a,3gp,3g2,mj2", .read_probe = mov_probe, .read_header = mov_read_header, .read_packet = mov_read_packet, .read_close = mov_read_close, .read_seek = mov_read_seek, .flags = AVFMT_NO_BYTE_SEEK, };