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