diff options
Diffstat (limited to 'ffmpeg1/libavformat/mov.c')
| -rw-r--r-- | ffmpeg1/libavformat/mov.c | 3408 |
1 files changed, 0 insertions, 3408 deletions
diff --git a/ffmpeg1/libavformat/mov.c b/ffmpeg1/libavformat/mov.c deleted file mode 100644 index 577c0e9..0000000 --- a/ffmpeg1/libavformat/mov.c +++ /dev/null @@ -1,3408 +0,0 @@ -/* - * MOV demuxer - * Copyright (c) 2001 Fabrice Bellard - * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com> - * - * 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 <limits.h> - -//#define DEBUG -//#define MOV_EXPORT_ALL_METADATA - -#include "libavutil/attributes.h" -#include "libavutil/channel_layout.h" -#include "libavutil/intreadwrite.h" -#include "libavutil/intfloat.h" -#include "libavutil/mathematics.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" - -#if CONFIG_ZLIB -#include <zlib.h> -#endif - -/* - * First version by Francois Revol revol@free.fr - * Seek function by Gael Chardon gael.dev@4now.net - */ - -#include "qtpalette.h" - - -#undef NDEBUG -#include <assert.h> - -/* 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_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); - 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) -{ - char buf[16]; - - /* bypass padding bytes */ - avio_r8(pb); - avio_r8(pb); - avio_r8(pb); - - snprintf(buf, sizeof(buf), "%d", avio_r8(pb)); - av_dict_set(&c->fc->metadata, key, buf, 0); - - return 0; -} - -static int mov_metadata_int8_no_padding(MOVContext *c, AVIOContext *pb, - unsigned len, const char *key) -{ - char buf[16]; - - snprintf(buf, sizeof(buf), "%d", avio_r8(pb)); - av_dict_set(&c->fc->metadata, key, buf, 0); - - return 0; -} - -static int mov_metadata_gnre(MOVContext *c, AVIOContext *pb, - unsigned len, const char *key) -{ - short genre; - char buf[20]; - - avio_r8(pb); // unknown - - genre = avio_r8(pb); - if (genre < 1 || genre > ID3v1_GENRE_MAX) - return 0; - snprintf(buf, sizeof(buf), "%s", ff_id3v1_genre_str[genre-1]); - av_dict_set(&c->fc->metadata, key, buf, 0); - - return 0; -} - -static int mov_read_custom_metadata(MOVContext *c, AVIOContext *pb, MOVAtom atom) -{ - char key[1024]={0}, data[1024]={0}; - 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; - - if (atom.size <= 8) return 0; - - for (i = 0; i < 3; i++) { // Parse up to three sub-atoms looking for name and data. - int data_size = avio_rb32(pb); - int tag = avio_rl32(pb); - int str_size = 0, skip_size = 0; - char *target = NULL; - - switch (tag) { - case MKTAG('n','a','m','e'): - avio_rb32(pb); // version/flags - str_size = skip_size = data_size - 12; - atom.size -= 12; - target = key; - break; - case MKTAG('d','a','t','a'): - avio_rb32(pb); // version/flags - avio_rb32(pb); // reserved (zero) - str_size = skip_size = data_size - 16; - atom.size -= 16; - target = data; - break; - default: - skip_size = data_size - 8; - str_size = 0; - break; - } - - if (target) { - str_size = FFMIN3(sizeof(data)-1, str_size, atom.size); - avio_read(pb, target, str_size); - target[str_size] = 0; - } - atom.size -= skip_size; - - // If we didn't read the full data chunk for the sub-atom, skip to the end of it. - if (skip_size > str_size) avio_skip(pb, skip_size - str_size); - } - - if (*key && *data) { - if (strcmp(key, "iTunSMPB") == 0) { - int priming, remainder, samples; - if(sscanf(data, "%*X %X %X %X", &priming, &remainder, &samples) == 3){ - if(priming>0 && priming<16384) - sc->start_pad = priming; - return 1; - } - } - if (strcmp(key, "cdec") == 0) { -// av_dict_set(&st->metadata, key, data, 0); - return 1; - } - } - 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_raw(MOVContext *c, AVIOContext *pb, - unsigned len, const char *key) -{ - char *value = av_malloc(len + 1); - if (!value) - return AVERROR(ENOMEM); - avio_read(pb, value, len); - value[len] = 0; - return av_dict_set(&c->fc->metadata, key, value, AV_DICT_DONT_STRDUP_VAL); -} - -static int mov_read_udta_string(MOVContext *c, AVIOContext *pb, MOVAtom atom) -{ -#ifdef MOV_EXPORT_ALL_METADATA - char tmp_key[5]; -#endif - char str[1024], key2[16], language[4] = {0}; - const char *key = NULL; - uint16_t langcode = 0; - uint32_t data_type = 0, str_size; - int (*parse)(MOVContext*, AVIOContext*, unsigned, const char*) = NULL; - - if (c->itunes_metadata && atom.type == MKTAG('-','-','-','-')) - return mov_read_custom_metadata(c, pb, atom); - - switch (atom.type) { - case MKTAG(0xa9,'n','a','m'): key = "title"; break; - case MKTAG(0xa9,'a','u','t'): - case MKTAG(0xa9,'A','R','T'): key = "artist"; break; - case MKTAG( 'a','A','R','T'): key = "album_artist"; break; - case MKTAG(0xa9,'w','r','t'): key = "composer"; break; - case MKTAG( 'c','p','r','t'): - case MKTAG(0xa9,'c','p','y'): key = "copyright"; break; - case MKTAG(0xa9,'g','r','p'): key = "grouping"; break; - case MKTAG(0xa9,'l','y','r'): key = "lyrics"; break; - case MKTAG(0xa9,'c','m','t'): - case MKTAG(0xa9,'i','n','f'): key = "comment"; break; - case MKTAG(0xa9,'a','l','b'): key = "album"; break; - case MKTAG(0xa9,'d','a','y'): key = "date"; break; - case MKTAG(0xa9,'g','e','n'): key = "genre"; break; - case MKTAG( 'g','n','r','e'): key = "genre"; - parse = mov_metadata_gnre; break; - case MKTAG(0xa9,'t','o','o'): - case MKTAG(0xa9,'s','w','r'): key = "encoder"; break; - case MKTAG(0xa9,'e','n','c'): key = "encoder"; break; - case MKTAG(0xa9,'m','a','k'): key = "make"; break; - case MKTAG(0xa9,'m','o','d'): key = "model"; break; - case MKTAG(0xa9,'x','y','z'): key = "location"; break; - case MKTAG( 'd','e','s','c'): key = "description";break; - case MKTAG( 'l','d','e','s'): key = "synopsis"; break; - case MKTAG( 't','v','s','h'): key = "show"; break; - case MKTAG( 't','v','e','n'): key = "episode_id";break; - case MKTAG( 't','v','n','n'): key = "network"; break; - case MKTAG( 't','r','k','n'): key = "track"; - parse = mov_metadata_track_or_disc_number; break; - case MKTAG( 'd','i','s','k'): key = "disc"; - parse = mov_metadata_track_or_disc_number; break; - case MKTAG( 't','v','e','s'): key = "episode_sort"; - parse = mov_metadata_int8_bypass_padding; break; - case MKTAG( 't','v','s','n'): key = "season_number"; - parse = mov_metadata_int8_bypass_padding; break; - case MKTAG( 's','t','i','k'): key = "media_type"; - parse = mov_metadata_int8_no_padding; break; - case MKTAG( 'h','d','v','d'): key = "hd_video"; - 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','R','M'): - return mov_metadata_raw(c, pb, atom.size, "premiere_version"); - case MKTAG( '@','P','R','Q'): - return mov_metadata_raw(c, pb, atom.size, "quicktime_version"); - } - - 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) { - 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; - -#ifdef MOV_EXPORT_ALL_METADATA - if (!key) { - snprintf(tmp_key, 5, "%.4s", (char*)&atom.type); - key = tmp_key; - } -#endif - - if (!key) - return 0; - if (atom.size < 0) - return AVERROR_INVALIDDATA; - - str_size = FFMIN3(sizeof(str)-1, str_size, atom.size); - - if (parse) - parse(c, pb, str_size, key); - else { - if (data_type == 3 || (data_type == 0 && (langcode < 0x400 || langcode == 0x7fff))) { // MAC Encoded - mov_read_mac_string(c, pb, str_size, str, sizeof(str)); - } else { - avio_read(pb, str, str_size); - str[str_size] = 0; - } - 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, atom.size); - - 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(url_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); - avio_read(pb, dref->dir, len); - 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, MOVAtom atom) -{ - 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, atom); -} - -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; - - if (c->fc->nb_streams < 1) - return 0; - st = c->fc->streams[c->fc->nb_streams-1]; - - if (ff_get_wav_header(pb, st->codec, atom.size) < 0) { - av_log(c->fc, AV_LOG_WARNING, "get_wav_header failed\n"); - } - - return 0; -} - -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 minor_ver_str[11]; /* 32 bit integer -> 10 digits + null */ - 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 */ - snprintf(minor_ver_str, sizeof(minor_ver_str), "%d", minor_ver); - av_dict_set(&c->fc->metadata, "minor_version", minor_ver_str, 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 ((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) -{ - c->fragment.moof_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; - time_t timet; - if(time >= 2082844800) - time -= 2082844800; /* seconds between 1904-01-01 and Epoch */ - timet = time; - ptm = gmtime(&timet); - if (!ptm) return; - 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; - - 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->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_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; - - 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; - buf= av_realloc(st->codec->extradata, size); - if (!buf) - return AVERROR(ENOMEM); - st->codec->extradata= buf; - buf+= 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); - avio_read(pb, buf + 8, atom.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) -{ - return mov_read_extradata(c, pb, atom, AV_CODEC_ID_AVUI); -} - -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) { - // pass all frma atom to codec, needed at least for QDMC and QDM2 - av_free(st->codec->extradata); - st->codec->extradata_size = 0; - st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE); - if (!st->codec->extradata) - return AVERROR(ENOMEM); - st->codec->extradata_size = atom.size; - avio_read(pb, st->codec->extradata, atom.size); - } 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); - } - av_free(st->codec->extradata); - st->codec->extradata_size = 0; - st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE); - if (!st->codec->extradata) - return AVERROR(ENOMEM); - st->codec->extradata_size = atom.size; - avio_read(pb, st->codec->extradata, atom.size); - return 0; -} - -static int mov_read_dvc1(MOVContext *c, AVIOContext *pb, MOVAtom atom) -{ - AVStream *st; - uint8_t profile_level; - - 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; - - av_free(st->codec->extradata); - st->codec->extradata_size = 0; - st->codec->extradata = av_mallocz(atom.size - 7 + FF_INPUT_BUFFER_PADDING_SIZE); - if (!st->codec->extradata) - return AVERROR(ENOMEM); - st->codec->extradata_size = atom.size - 7; - avio_seek(pb, 6, SEEK_CUR); - avio_read(pb, st->codec->extradata, st->codec->extradata_size); - 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; - - av_free(st->codec->extradata); - st->codec->extradata_size = 0; - st->codec->extradata = av_mallocz(atom.size - 40 + FF_INPUT_BUFFER_PADDING_SIZE); - if (!st->codec->extradata) - return AVERROR(ENOMEM); - st->codec->extradata_size = atom.size - 40; - avio_skip(pb, 40); - avio_read(pb, st->codec->extradata, atom.size - 40); - 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 (entries >= UINT_MAX/sizeof(int64_t)) - return AVERROR_INVALIDDATA; - - sc->chunk_offsets = av_malloc(entries * sizeof(int64_t)); - 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); -} - -int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries) -{ - AVStream *st; - MOVStreamContext *sc; - int j, 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 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 (st->codec->codec_tag && - st->codec->codec_tag != format && - (c->fc->video_codec_id ? ff_codec_get_id(ff_codec_movvideo_tags, format) != c->fc->video_codec_id - : st->codec->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 - (avio_tell(pb) - start_pos)); - continue; - } - /* we cannot demux concatenated h264 streams because of different extradata */ - if (st->codec->codec_tag && st->codec->codec_tag == AV_RL32("avc1")) - av_log(c->fc, AV_LOG_WARNING, "Concatenated H.264 might not play corrently.\n"); - sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id; - sc->dref_id= dref_id; - - st->codec->codec_tag = format; - 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 && /* do not overwrite codec type */ - format && format != MKTAG('m','p','4','s')) { /* skip old asf mpeg4 tag */ - 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; - } - } - - 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) { - unsigned int color_depth, len; - int color_greyscale; - int color_table_id; - - st->codec->codec_id = 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, st->codec->codec_name, 32); - if (len < 31) - avio_skip(pb, 31 - len); - /* codec_tag YV12 triggers an UV swap in rawdec.c */ - if (!memcmp(st->codec->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 (format == MKTAG('H','2','6','3') && - !memcmp(st->codec->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; - - /* 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++) { - if (id == AV_CODEC_ID_CINEPAK){ - r = g = b = color_count - 1 - color_index; - }else - 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; - } - } else if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO) { - 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); - - st->codec->codec_id = id; - avio_rb16(pb); /* revision level */ - avio_rb32(pb); /* vendor */ - - st->codec->channels = avio_rb16(pb); /* channel count */ - av_dlog(c->fc, "audio channels %d\n", st->codec->channels); - st->codec->bits_per_coded_sample = avio_rb16(pb); /* sample size */ - - 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)); /* float 64 */ - st->codec->channels = avio_rb32(pb); - avio_rb32(pb); /* always 0x7F000000 */ - st->codec->bits_per_coded_sample = avio_rb32(pb); /* bits per channel if sound is uncompressed */ - flags = avio_rb32(pb); /* lpcm format specific flag */ - sc->bytes_per_frame = avio_rb32(pb); /* bytes per audio packet if constant */ - sc->samples_per_frame = avio_rb32(pb); /* lpcm frames per audio packet if constant */ - if (format == 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; - 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; - } - } else if (st->codec->codec_type==AVMEDIA_TYPE_SUBTITLE){ - // ttxt stsd contains display flags, justification, background - // color, fonts, and default styles, so fake an atom to read it - MOVAtom fake_atom = { .size = size - (avio_tell(pb) - start_pos) }; - if (format != AV_RL32("mp4s")) // mp4s contains a regular esds atom - mov_read_glbl(c, pb, fake_atom); - st->codec->codec_id= id; - st->codec->width = sc->width; - st->codec->height = sc->height; - } else { - if (st->codec->codec_tag == MKTAG('t','m','c','d')) { - MOVStreamContext *tmcd_ctx = st->priv_data; - int val; - avio_rb32(pb); /* reserved */ - val = avio_rb32(pb); /* flags */ - tmcd_ctx->tmcd_flags = val; - if (val & 1) - st->codec->flags2 |= CODEC_FLAG2_DROP_FRAME_TIMECODE; - avio_rb32(pb); /* time scale */ - avio_rb32(pb); /* frame duration */ - st->codec->time_base.den = avio_r8(pb); /* number of frame */ - st->codec->time_base.num = 1; - } - /* other codec type, just skip (rtp, mp4s, ...) */ - avio_skip(pb, size - (avio_tell(pb) - start_pos)); - } - /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */ - a.size = size - (avio_tell(pb) - start_pos); - if (a.size > 8) { - int ret; - 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; - - if (st->codec->codec_type==AVMEDIA_TYPE_AUDIO && st->codec->sample_rate==0 && 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: - // 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; - st->codec->channels= 1; /* really needed */ - break; - case AV_CODEC_ID_AMR_NB: - st->codec->channels= 1; /* really needed */ - /* 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: - st->codec->codec_type = AVMEDIA_TYPE_AUDIO; /* force type after stsd for m1a hdlr */ - 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: - 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: - st->need_parsing = AVSTREAM_PARSE_FULL; - break; - case AV_CODEC_ID_MPEG1VIDEO: - st->need_parsing = AVSTREAM_PARSE_FULL; - break; - case AV_CODEC_ID_VC1: - st->need_parsing = AVSTREAM_PARSE_FULL; - break; - default: - break; - } - - return 0; -} - -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 (entries >= UINT_MAX / sizeof(*sc->stsc_data)) - return AVERROR_INVALIDDATA; - sc->stsc_data = av_malloc(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 (entries >= UINT_MAX / sizeof(*sc->stps_data)) - return AVERROR_INVALIDDATA; - sc->stps_data = av_malloc(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; - return 0; - } - if (entries >= UINT_MAX / sizeof(int)) - return AVERROR_INVALIDDATA; - sc->keyframes = av_malloc(entries * sizeof(int)); - 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->alt_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 / sizeof(int) || entries >= (UINT_MAX - 4) / field_size) - return AVERROR_INVALIDDATA; - sc->sample_sizes = av_malloc(entries * sizeof(int)); - 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 (entries >= UINT_MAX / sizeof(*sc->stts_data)) - return -1; - - sc->stts_data = av_malloc(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 in STTS %d\n", sample_duration); - sample_duration = 1; - } - 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); - - duration+=(int64_t)sample_duration*sample_count; - total_sample_count+=sample_count; - } - - sc->stts_count = i; - - 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 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+2<entries) { - av_log(c->fc, AV_LOG_WARNING, "CTTS invalid\n"); - av_freep(&sc->ctts_data); - sc->ctts_count = 0; - return 0; - } - - if (duration < 0 && i+2<entries) - sc->dts_shift = FFMAX(sc->dts_shift, -duration); - } - - sc->ctts_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 (entries >= UINT_MAX / sizeof(*sc->rap_group)) - return AVERROR_INVALIDDATA; - sc->rap_group = av_malloc(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; - AVIndexEntry *mem; - - /* adjust first dts according to edit list */ - if ((sc->empty_duration || sc->start_time) && mov->time_scale > 0) { - if (sc->empty_duration) - sc->empty_duration = av_rescale(sc->empty_duration, sc->time_scale, mov->time_scale); - sc->time_offset = sc->start_time - sc->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; - mem = av_realloc(st->index_entries, (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries)); - if (!mem) - return; - st->index_entries = mem; - st->index_entries_allocated_size = (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries); - - for (i = 0; i < sc->chunk_count; i++) { - current_offset = sc->chunk_offsets[i]; - while (stsc_index + 1 < sc->stsc_count && - i + 1 == sc->stsc_data[stsc_index + 1].first) - stsc_index++; - 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 (keyframe) - distance = 0; - sample_size = sc->alt_sample_size > 0 ? sc->alt_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); - } - - 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; - mem = av_realloc(st->index_entries, (st->nb_index_entries + total) * sizeof(*st->index_entries)); - if (!mem) - return; - st->index_entries = mem; - 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 (st->duration > 0) - av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den, - sc->time_scale*st->nb_frames, st->duration, 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 && - st->codec->codec_tag != MKTAG('a', 'v', 'c', '1')) { - ff_generate_avci_extradata(st); - } - - 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->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_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][2]; - AVStream *st; - MOVStreamContext *sc; - int version; - - 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); - avio_rb24(pb); /* flags */ - /* - MOV_TRACK_ENABLED 0x0001 - MOV_TRACK_IN_MOVIE 0x0002 - MOV_TRACK_IN_PREVIEW 0x0004 - MOV_TRACK_IN_POSTER 0x0008 - */ - - 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 - // ignore u,v,z b/c we don't need the scale factor to calc 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 - avio_rb32(pb); // 2.30 fixed point (not used) - } - - 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; - - //Assign clockwise rotate values based on transform matrix so that - //we can compensate for iPhone orientation during capture. - - if (display_matrix[1][0] == -65536 && display_matrix[0][1] == 65536) { - av_dict_set(&st->metadata, "rotate", "90", 0); - } - - if (display_matrix[0][0] == -65536 && display_matrix[1][1] == -65536) { - av_dict_set(&st->metadata, "rotate", "180", 0); - } - - if (display_matrix[1][0] == 65536 && display_matrix[0][1] == -65536) { - av_dict_set(&st->metadata, "rotate", "270", 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; - 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; - } - - frag->base_data_offset = flags & MOV_TFHD_BASE_DATA_OFFSET ? - avio_rb64(pb) : frag->moof_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; - 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; - - if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data)) - return AVERROR_INVALIDDATA; - trex = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data)); - if (!trex) - return AVERROR(ENOMEM); - - c->fc->duration = AV_NOPTS_VALUE; // the duration from mvhd is not representing the whole file when fragments are used. - - c->trex_data = trex; - 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_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; - - 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; - 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_malloc(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; - ctts_data = av_realloc(sc->ctts_data, - (entries+sc->ctts_count)*sizeof(*sc->ctts_data)); - if (!ctts_data) - return AVERROR(ENOMEM); - sc->ctts_data = ctts_data; - - 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; - 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; - } - - if (pb->eof_reached) - return AVERROR_EOF; - - frag->moof_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, edit_start_index = 0; - int unsupported = 0; - - 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 ((uint64_t)edit_count*12+8 > atom.size) - return AVERROR_INVALIDDATA; - - av_dlog(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count); - for (i=0; i<edit_count; i++){ - int64_t time; - int64_t duration; - int rate; - if (version == 1) { - duration = avio_rb64(pb); - time = avio_rb64(pb); - } else { - duration = avio_rb32(pb); /* segment duration */ - time = (int32_t)avio_rb32(pb); /* media time */ - } - rate = avio_rb32(pb); - if (i == 0 && time == -1) { - sc->empty_duration = duration; - edit_start_index = 1; - } else if (i == edit_start_index && time >= 0) - sc->start_time = time; - else - unsupported = 1; - - av_dlog(c->fc, "duration=%"PRId64" time=%"PRId64" rate=%f\n", - duration, time, rate / 65536.0); - } - - if (unsupported) - av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, " - "a/v desync might occur, patch welcome\n"); - - 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 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_avid }, -{ 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','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','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 }, -{ 0, NULL } -}; - -static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom) -{ - int64_t total_size = 0; - MOVAtom a; - int i; - - if (atom.size < 0) - atom.size = INT64_MAX; - while (total_size + 8 <= atom.size && !url_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 (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); - 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) - 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; - 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_DEBUG, "undoing overread of %"PRId64" in '%.4s'\n", -left, (char*)&a.type); - 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); - - 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('j','P',' ',' '): /* jpeg 2000 signature */ - 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_MAX - 50); - } 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_MAX - 50); - 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 (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); - if (!sc->pb_is_copied) - avio_close(sc->pb); - sc->pb = NULL; - av_freep(&sc->chunk_offsets); - av_freep(&sc->keyframes); - av_freep(&sc->sample_sizes); - av_freep(&sc->stps_data); - av_freep(&sc->stsc_data); - av_freep(&sc->stts_data); - } - - if (mov->dv_demux) { - for (i = 0; i < mov->dv_fctx->nb_streams; i++) { - av_freep(&mov->dv_fctx->streams[i]->codec); - av_freep(&mov->dv_fctx->streams[i]); - } - av_freep(&mov->dv_fctx); - av_freep(&mov->dv_demux); - } - - av_freep(&mov->trex_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 mov_read_header(AVFormatContext *s) -{ - MOVContext *mov = s->priv_data; - AVIOContext *pb = s->pb; - int i, j, err; - MOVAtom atom = { AV_RL32("root") }; - - 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 */ - if ((err = mov_read_default(mov, pb, atom)) < 0) { - av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err); - mov_read_close(s); - return err; - } - 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 (mov->trex_data) { - for (i = 0; i < s->nb_streams; i++) { - AVStream *st = s->streams[i]; - MOVStreamContext *sc = st->priv_data; - if (st->duration) - st->codec->bit_rate = sc->data_size * 8 * sc->time_scale / st->duration; - } - } - - 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 || - url_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 (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; -} - -static const AVOption options[] = { - {"use_absolute_path", - "allow using absolute path when opening alias, this is a possible security issue", - offsetof(MOVContext, use_absolute_path), FF_OPT_TYPE_INT, {.i64 = 0}, - 0, 1, AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_DECODING_PARAM}, - {"ignore_editlist", "", offsetof(MOVContext, ignore_editlist), FF_OPT_TYPE_INT, {.i64 = 0}, - 0, 1, AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_DECODING_PARAM}, - {NULL} -}; - -static const AVClass class = { - .class_name = "mov,mp4,m4a,3gp,3g2,mj2", - .item_name = av_default_item_name, - .option = 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_data_size = sizeof(MOVContext), - .read_probe = mov_probe, - .read_header = mov_read_header, - .read_packet = mov_read_packet, - .read_close = mov_read_close, - .read_seek = mov_read_seek, - .priv_class = &class, - .flags = AVFMT_NO_BYTE_SEEK, -}; |