/* * MOV demuxer * Copyright (c) 2001 Fabrice Bellard * * 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 //#define DEBUG #include "libavutil/intreadwrite.h" #include "libavutil/avstring.h" #include "avformat.h" #include "riff.h" #include "isom.h" #include "dv.h" #include "libavcodec/mpeg4audio.h" #include "libavcodec/mpegaudiodata.h" #if CONFIG_ZLIB #include #endif /* * First version by Francois Revol revol@free.fr * Seek function by Gael Chardon gael.dev@4now.net * * Features and limitations: * - reads most of the QT files I have (at least the structure), * Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html * - the code is quite ugly... maybe I won't do it recursive next time :-) * * Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/ * when coding this :) (it's a writer anyway) * * Reference documents: * http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt * Apple: * http://developer.apple.com/documentation/QuickTime/QTFF/ * http://developer.apple.com/documentation/QuickTime/QTFF/qtff.pdf * QuickTime is a trademark of Apple (AFAIK :)) */ #include "qtpalette.h" #undef NDEBUG #include /* the QuickTime file format is quite convoluted... * it has lots of index tables, each indexing something in another one... * Here we just use what is needed to read the chunks */ typedef struct { int first; int count; int id; } MOVStsc; typedef struct { uint32_t type; char *path; } MOVDref; typedef struct { uint32_t type; int64_t offset; int64_t size; /* total size (excluding the size and type fields) */ } MOVAtom; struct MOVParseTableEntry; typedef struct { unsigned track_id; uint64_t base_data_offset; uint64_t moof_offset; unsigned stsd_id; unsigned duration; unsigned size; unsigned flags; } MOVFragment; typedef struct { unsigned track_id; unsigned stsd_id; unsigned duration; unsigned size; unsigned flags; } MOVTrackExt; typedef struct MOVStreamContext { ByteIOContext *pb; int ffindex; /* the ffmpeg stream id */ int next_chunk; unsigned int chunk_count; int64_t *chunk_offsets; unsigned int stts_count; MOVStts *stts_data; unsigned int ctts_count; MOVStts *ctts_data; unsigned int stsc_count; MOVStsc *stsc_data; int ctts_index; int ctts_sample; unsigned int sample_size; unsigned int sample_count; int *sample_sizes; unsigned int keyframe_count; int *keyframes; int time_scale; int time_rate; int time_offset; ///< time offset of the first edit list entry int current_sample; unsigned int bytes_per_frame; unsigned int samples_per_frame; int dv_audio_container; int pseudo_stream_id; ///< -1 means demux all ids int16_t audio_cid; ///< stsd audio compression id unsigned drefs_count; MOVDref *drefs; int dref_id; int wrong_dts; ///< dts are wrong due to negative ctts int width; ///< tkhd width int height; ///< tkhd height } MOVStreamContext; typedef struct MOVContext { AVFormatContext *fc; int time_scale; int64_t duration; /* duration of the longest track */ int found_moov; /* when both 'moov' and 'mdat' sections has been found */ int found_mdat; /* we suppose we have enough data to read the file */ AVPaletteControl palette_control; DVDemuxContext *dv_demux; AVFormatContext *dv_fctx; int isom; /* 1 if file is ISO Media (mp4/3gp) */ MOVFragment fragment; ///< current fragment in moof atom MOVTrackExt *trex_data; unsigned trex_count; int itunes_metadata; ///< metadata are itunes style } MOVContext; /* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */ /* those functions parse an atom */ /* return code: 0: continue to parse next atom <0: error occurred, exit */ /* links atom IDs to parse functions */ typedef struct MOVParseTableEntry { uint32_t type; int (*parse)(MOVContext *ctx, ByteIOContext *pb, MOVAtom atom); } MOVParseTableEntry; static const MOVParseTableEntry mov_default_parse_table[]; static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOVAtom atom) { int64_t total_size = 0; MOVAtom a; int i; int err = 0; a.offset = atom.offset; if (atom.size < 0) atom.size = INT64_MAX; while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) { a.size = atom.size; a.type=0; if(atom.size >= 8) { a.size = get_be32(pb); a.type = get_le32(pb); } total_size += 8; a.offset += 8; dprintf(c->fc, "type: %08x %.4s sz: %"PRIx64" %"PRIx64" %"PRIx64"\n", a.type, (char*)&a.type, a.size, atom.size, total_size); if (a.size == 1) { /* 64 bit extended size */ a.size = get_be64(pb) - 8; a.offset += 8; total_size += 8; } if (a.size == 0) { a.size = atom.size - total_size; if (a.size <= 8) break; } 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 != 0 && mov_default_parse_table[i].type != a.type; i++) /* empty */; if (mov_default_parse_table[i].type == 0) { /* skip leaf atoms data */ url_fskip(pb, a.size); } else { int64_t start_pos = url_ftell(pb); int64_t left; err = mov_default_parse_table[i].parse(c, pb, a); if (url_is_streamed(pb) && c->found_moov && c->found_mdat) break; left = a.size - url_ftell(pb) + start_pos; if (left > 0) /* skip garbage at atom end */ url_fskip(pb, left); } a.offset += a.size; total_size += a.size; } if (!err && total_size < atom.size && atom.size < 0x7ffff) url_fskip(pb, atom.size - total_size); return err; } static int mov_read_dref(MOVContext *c, ByteIOContext *pb, MOVAtom atom) { AVStream *st = c->fc->streams[c->fc->nb_streams-1]; MOVStreamContext *sc = st->priv_data; int entries, i, j; get_be32(pb); // version + flags entries = get_be32(pb); if (entries >= UINT_MAX / sizeof(*sc->drefs)) return -1; 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 = get_be32(pb); int64_t next = url_ftell(pb) + size - 4; dref->type = get_le32(pb); get_be32(pb); // version + flags dprintf(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; char volume[28]; int16_t type; url_fskip(pb, 10); volume_len = get_byte(pb); volume_len = FFMIN(volume_len, 27); get_buffer(pb, volume, 27); volume[volume_len] = 0; av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", volume, volume_len); url_fskip(pb, 112); for (type = 0; type != -1 && url_ftell(pb) < next; ) { type = get_be16(pb); len = get_be16(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); get_buffer(pb, dref->path, len); if (len > volume_len && !strncmp(dref->path, 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 url_fskip(pb, len); } } url_fseek(pb, next, SEEK_SET); } return 0; } static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOVAtom atom) { AVStream *st = c->fc->streams[c->fc->nb_streams-1]; uint32_t type; uint32_t ctype; get_byte(pb); /* version */ get_be24(pb); /* flags */ /* component type */ ctype = get_le32(pb); type = get_le32(pb); /* component subtype */ dprintf(c->fc, "ctype= %c%c%c%c (0x%08x)\n", *((char *)&ctype), ((char *)&ctype)[1], ((char *)&ctype)[2], ((char *)&ctype)[3], (int) ctype); dprintf(c->fc, "stype= %c%c%c%c\n", *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]); if(!ctype) c->isom = 1; if (type == MKTAG('v','i','d','e')) st->codec->codec_type = CODEC_TYPE_VIDEO; else if(type == MKTAG('s','o','u','n')) st->codec->codec_type = CODEC_TYPE_AUDIO; else if(type == MKTAG('m','1','a',' ')) st->codec->codec_id = CODEC_ID_MP2; else if(type == MKTAG('s','u','b','p')) { st->codec->codec_type = CODEC_TYPE_SUBTITLE; } get_be32(pb); /* component manufacture */ get_be32(pb); /* component flags */ get_be32(pb); /* component flags mask */ if(atom.size <= 24) return 0; /* nothing left to read */ url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset)); return 0; } static int mp4_read_descr_len(ByteIOContext *pb) { int len = 0; int count = 4; while (count--) { int c = get_byte(pb); len = (len << 7) | (c & 0x7f); if (!(c & 0x80)) break; } return len; } static int mp4_read_descr(MOVContext *c, ByteIOContext *pb, int *tag) { int len; *tag = get_byte(pb); len = mp4_read_descr_len(pb); dprintf(c->fc, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len); return len; } #define MP4ESDescrTag 0x03 #define MP4DecConfigDescrTag 0x04 #define MP4DecSpecificDescrTag 0x05 static const AVCodecTag mp4_audio_types[] = { { CODEC_ID_MP3ON4, 29 }, /* old mp3on4 draft */ { CODEC_ID_MP3ON4, 32 }, /* layer 1 */ { CODEC_ID_MP3ON4, 33 }, /* layer 2 */ { CODEC_ID_MP3ON4, 34 }, /* layer 3 */ { CODEC_ID_NONE, 0 }, }; static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOVAtom atom) { AVStream *st = c->fc->streams[c->fc->nb_streams-1]; int tag, len; get_be32(pb); /* version + flags */ len = mp4_read_descr(c, pb, &tag); if (tag == MP4ESDescrTag) { get_be16(pb); /* ID */ get_byte(pb); /* priority */ } else get_be16(pb); /* ID */ len = mp4_read_descr(c, pb, &tag); if (tag == MP4DecConfigDescrTag) { int object_type_id = get_byte(pb); get_byte(pb); /* stream type */ get_be24(pb); /* buffer size db */ get_be32(pb); /* max bitrate */ get_be32(pb); /* avg bitrate */ st->codec->codec_id= codec_get_id(ff_mp4_obj_type, object_type_id); dprintf(c->fc, "esds object type id %d\n", object_type_id); len = mp4_read_descr(c, pb, &tag); if (tag == MP4DecSpecificDescrTag) { dprintf(c->fc, "Specific MPEG4 header len=%d\n", len); if((uint64_t)len > (1<<30)) return -1; st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE); if (!st->codec->extradata) return AVERROR(ENOMEM); get_buffer(pb, st->codec->extradata, len); st->codec->extradata_size = len; if (st->codec->codec_id == CODEC_ID_AAC) { MPEG4AudioConfig cfg; ff_mpeg4audio_get_config(&cfg, st->codec->extradata, st->codec->extradata_size); if (cfg.chan_config > 7) return -1; st->codec->channels = ff_mpeg4audio_channels[cfg.chan_config]; if (cfg.object_type == 29 && cfg.sampling_index < 3) // old mp3on4 st->codec->sample_rate = ff_mpa_freq_tab[cfg.sampling_index]; else st->codec->sample_rate = cfg.sample_rate; // ext sample rate ? dprintf(c->fc, "mp4a config channels %d obj %d ext obj %d " "sample rate %d ext sample rate %d\n", st->codec->channels, cfg.object_type, cfg.ext_object_type, cfg.sample_rate, cfg.ext_sample_rate); if (!(st->codec->codec_id = codec_get_id(mp4_audio_types, cfg.object_type))) st->codec->codec_id = CODEC_ID_AAC; } } } return 0; } static int mov_read_pasp(MOVContext *c, ByteIOContext *pb, MOVAtom atom) { const int num = get_be32(pb); const int den = get_be32(pb); AVStream * const st = c->fc->streams[c->fc->nb_streams-1]; if (den != 0) { 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, overriding by 'pasp' atom\n", st->sample_aspect_ratio.num, st->sample_aspect_ratio.den); 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, ByteIOContext *pb, MOVAtom atom) { if(atom.size == 0) /* wrong one (MP4) */ return 0; c->found_mdat=1; return 0; /* now go for moov */ } static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOVAtom atom) { uint32_t type = get_le32(pb); if (type != MKTAG('q','t',' ',' ')) c->isom = 1; av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type); get_be32(pb); /* minor version */ url_fskip(pb, atom.size - 8); return 0; } /* this atom should contain all header atoms */ static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOVAtom atom) { if (mov_read_default(c, pb, atom) < 0) return -1; /* 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, ByteIOContext *pb, MOVAtom atom) { c->fragment.moof_offset = url_ftell(pb) - 8; dprintf(c->fc, "moof offset %llx\n", c->fragment.moof_offset); return mov_read_default(c, pb, atom); } static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom) { AVStream *st = c->fc->streams[c->fc->nb_streams-1]; MOVStreamContext *sc = st->priv_data; int version = get_byte(pb); char language[4] = {0}; unsigned lang; if (version > 1) return -1; /* unsupported */ get_be24(pb); /* flags */ if (version == 1) { get_be64(pb); get_be64(pb); } else { get_be32(pb); /* creation time */ get_be32(pb); /* modification time */ } sc->time_scale = get_be32(pb); st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */ lang = get_be16(pb); /* language */ if (ff_mov_lang_to_iso639(lang, language)) av_metadata_set(&st->metadata, "language", language); get_be16(pb); /* quality */ return 0; } static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom) { int version = get_byte(pb); /* version */ get_be24(pb); /* flags */ if (version == 1) { get_be64(pb); get_be64(pb); } else { get_be32(pb); /* creation time */ get_be32(pb); /* modification time */ } c->time_scale = get_be32(pb); /* time scale */ dprintf(c->fc, "time scale = %i\n", c->time_scale); c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */ get_be32(pb); /* preferred scale */ get_be16(pb); /* preferred volume */ url_fskip(pb, 10); /* reserved */ url_fskip(pb, 36); /* display matrix */ get_be32(pb); /* preview time */ get_be32(pb); /* preview duration */ get_be32(pb); /* poster time */ get_be32(pb); /* selection time */ get_be32(pb); /* selection duration */ get_be32(pb); /* current time */ get_be32(pb); /* next track ID */ return 0; } static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOVAtom atom) { AVStream *st = c->fc->streams[c->fc->nb_streams-1]; if((uint64_t)atom.size > (1<<30)) return -1; // currently SVQ3 decoder expect full STSD header - so let's fake it // this should be fixed and just SMI header should be passed av_free(st->codec->extradata); st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE); if (!st->codec->extradata) return AVERROR(ENOMEM); st->codec->extradata_size = 0x5a + atom.size; memcpy(st->codec->extradata, "SVQ3", 4); // fake get_buffer(pb, st->codec->extradata + 0x5a, atom.size); dprintf(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a); return 0; } static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOVAtom atom) { AVStream *st = c->fc->streams[c->fc->nb_streams-1]; int little_endian = get_be16(pb); dprintf(c->fc, "enda %d\n", little_endian); if (little_endian == 1) { switch (st->codec->codec_id) { case CODEC_ID_PCM_S24BE: st->codec->codec_id = CODEC_ID_PCM_S24LE; break; case CODEC_ID_PCM_S32BE: st->codec->codec_id = CODEC_ID_PCM_S32LE; break; case CODEC_ID_PCM_F32BE: st->codec->codec_id = CODEC_ID_PCM_F32LE; break; case CODEC_ID_PCM_F64BE: st->codec->codec_id = CODEC_ID_PCM_F64LE; break; default: break; } } return 0; } /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */ static int mov_read_extradata(MOVContext *c, ByteIOContext *pb, MOVAtom atom) { AVStream *st; uint64_t size; uint8_t *buf; if (c->fc->nb_streams < 1) // will happen with jp2 files return 0; st= c->fc->streams[c->fc->nb_streams-1]; 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 -1; buf= av_realloc(st->codec->extradata, size); if(!buf) return -1; st->codec->extradata= buf; buf+= st->codec->extradata_size; st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE; AV_WB32( buf , atom.size + 8); AV_WL32( buf + 4, atom.type); get_buffer(pb, buf + 8, atom.size); return 0; } static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOVAtom atom) { AVStream *st = c->fc->streams[c->fc->nb_streams-1]; if((uint64_t)atom.size > (1<<30)) return -1; if (st->codec->codec_id == CODEC_ID_QDM2) { // pass all frma atom to codec, needed at least for QDM2 av_free(st->codec->extradata); st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE); if (!st->codec->extradata) return AVERROR(ENOMEM); st->codec->extradata_size = atom.size; get_buffer(pb, st->codec->extradata, atom.size); } else if (atom.size > 8) { /* to read frma, esds atoms */ if (mov_read_default(c, pb, atom) < 0) return -1; } else url_fskip(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, ByteIOContext *pb, MOVAtom atom) { AVStream *st = c->fc->streams[c->fc->nb_streams-1]; if((uint64_t)atom.size > (1<<30)) return -1; av_free(st->codec->extradata); st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE); if (!st->codec->extradata) return AVERROR(ENOMEM); st->codec->extradata_size = atom.size; get_buffer(pb, st->codec->extradata, atom.size); return 0; } static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOVAtom atom) { AVStream *st = c->fc->streams[c->fc->nb_streams-1]; MOVStreamContext *sc = st->priv_data; unsigned int i, entries; get_byte(pb); /* version */ get_be24(pb); /* flags */ entries = get_be32(pb); if(entries >= UINT_MAX/sizeof(int64_t)) return -1; 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; ichunk_offsets[i] = get_be32(pb); else if (atom.type == MKTAG('c','o','6','4')) for(i=0; ichunk_offsets[i] = get_be64(pb); else return -1; return 0; } /** * Compute codec id for 'lpcm' tag. * See CoreAudioTypes and AudioStreamBasicDescription at Apple. */ static enum CodecID mov_get_lpcm_codec_id(int bps, int flags) { if (flags & 1) { // floating point if (flags & 2) { // big endian if (bps == 32) return CODEC_ID_PCM_F32BE; else if (bps == 64) return CODEC_ID_PCM_F64BE; } else { if (bps == 32) return CODEC_ID_PCM_F32LE; else if (bps == 64) return CODEC_ID_PCM_F64LE; } } else { if (flags & 2) { if (bps == 8) // signed integer if (flags & 4) return CODEC_ID_PCM_S8; else return CODEC_ID_PCM_U8; else if (bps == 16) return CODEC_ID_PCM_S16BE; else if (bps == 24) return CODEC_ID_PCM_S24BE; else if (bps == 32) return CODEC_ID_PCM_S32BE; } else { if (bps == 8) if (flags & 4) return CODEC_ID_PCM_S8; else return CODEC_ID_PCM_U8; else if (bps == 16) return CODEC_ID_PCM_S16LE; else if (bps == 24) return CODEC_ID_PCM_S24LE; else if (bps == 32) return CODEC_ID_PCM_S32LE; } } return CODEC_ID_NONE; } static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOVAtom atom) { AVStream *st = c->fc->streams[c->fc->nb_streams-1]; MOVStreamContext *sc = st->priv_data; int j, entries, pseudo_stream_id; get_byte(pb); /* version */ get_be24(pb); /* flags */ entries = get_be32(pb); for(pseudo_stream_id=0; pseudo_stream_idcodec->codec_tag && st->codec->codec_tag != format && (c->fc->video_codec_id ? codec_get_id(codec_movvideo_tags, format) != c->fc->video_codec_id : st->codec->codec_tag != MKTAG('j','p','e','g')) ){ /* Multiple fourcc, we skip JPEG. This is not correct, we should * export it as a separate AVStream but this needs a few changes * in the MOV demuxer, patch welcome. */ av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n"); url_fskip(pb, size - (url_ftell(pb) - start_pos)); continue; } sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id; sc->dref_id= dref_id; st->codec->codec_tag = format; id = codec_get_id(codec_movaudio_tags, format); if (id<=0 && (format&0xFFFF) == 'm'+('s'<<8)) id = codec_get_id(codec_wav_tags, bswap_32(format)&0xFFFF); if (st->codec->codec_type != CODEC_TYPE_VIDEO && id > 0) { st->codec->codec_type = CODEC_TYPE_AUDIO; } else if (st->codec->codec_type != CODEC_TYPE_AUDIO && /* do not overwrite codec type */ format && format != MKTAG('m','p','4','s')) { /* skip old asf mpeg4 tag */ id = codec_get_id(codec_movvideo_tags, format); if (id <= 0) id = codec_get_id(codec_bmp_tags, format); if (id > 0) st->codec->codec_type = CODEC_TYPE_VIDEO; else if(st->codec->codec_type == CODEC_TYPE_DATA){ id = codec_get_id(ff_codec_movsubtitle_tags, format); if(id > 0) st->codec->codec_type = CODEC_TYPE_SUBTITLE; } } dprintf(c->fc, "size=%d 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==CODEC_TYPE_VIDEO) { uint8_t codec_name[32]; unsigned int color_depth; int color_greyscale; st->codec->codec_id = id; get_be16(pb); /* version */ get_be16(pb); /* revision level */ get_be32(pb); /* vendor */ get_be32(pb); /* temporal quality */ get_be32(pb); /* spatial quality */ st->codec->width = get_be16(pb); /* width */ st->codec->height = get_be16(pb); /* height */ get_be32(pb); /* horiz resolution */ get_be32(pb); /* vert resolution */ get_be32(pb); /* data size, always 0 */ get_be16(pb); /* frames per samples */ get_buffer(pb, codec_name, 32); /* codec name, pascal string */ if (codec_name[0] <= 31) { memcpy(st->codec->codec_name, &codec_name[1],codec_name[0]); st->codec->codec_name[codec_name[0]] = 0; } st->codec->bits_per_coded_sample = get_be16(pb); /* depth */ st->codec->color_table_id = get_be16(pb); /* colortable id */ dprintf(c->fc, "depth %d, ctab id %d\n", st->codec->bits_per_coded_sample, st->codec->color_table_id); /* figure out the palette situation */ color_depth = st->codec->bits_per_coded_sample & 0x1F; color_greyscale = st->codec->bits_per_coded_sample & 0x20; /* if the depth is 2, 4, or 8 bpp, file is palettized */ if ((color_depth == 2) || (color_depth == 4) || (color_depth == 8)) { /* for palette traversal */ unsigned int color_start, color_count, color_end; unsigned char 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; c->palette_control.palette[j] = (r << 16) | (g << 8) | (b); color_index -= color_dec; if (color_index < 0) color_index = 0; } } else if (st->codec->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 * 4 + 0]; g = color_table[j * 4 + 1]; b = color_table[j * 4 + 2]; c->palette_control.palette[j] = (r << 16) | (g << 8) | (b); } } else { /* load the palette from the file */ color_start = get_be32(pb); color_count = get_be16(pb); color_end = get_be16(pb); if ((color_start <= 255) && (color_end <= 255)) { for (j = color_start; j <= color_end; j++) { /* each R, G, or B component is 16 bits; * only use the top 8 bits; skip alpha bytes * up front */ get_byte(pb); get_byte(pb); r = get_byte(pb); get_byte(pb); g = get_byte(pb); get_byte(pb); b = get_byte(pb); get_byte(pb); c->palette_control.palette[j] = (r << 16) | (g << 8) | (b); } } } st->codec->palctrl = &c->palette_control; st->codec->palctrl->palette_changed = 1; } else st->codec->palctrl = NULL; } else if(st->codec->codec_type==CODEC_TYPE_AUDIO) { int bits_per_sample, flags; uint16_t version = get_be16(pb); st->codec->codec_id = id; get_be16(pb); /* revision level */ get_be32(pb); /* vendor */ st->codec->channels = get_be16(pb); /* channel count */ dprintf(c->fc, "audio channels %d\n", st->codec->channels); st->codec->bits_per_coded_sample = get_be16(pb); /* sample size */ sc->audio_cid = get_be16(pb); get_be16(pb); /* packet size = 0 */ st->codec->sample_rate = ((get_be32(pb) >> 16)); //Read QT version 1 fields. In version 0 these do not exist. dprintf(c->fc, "version =%d, isom =%d\n",version,c->isom); if(!c->isom) { if(version==1) { sc->samples_per_frame = get_be32(pb); get_be32(pb); /* bytes per packet */ sc->bytes_per_frame = get_be32(pb); get_be32(pb); /* bytes per sample */ } else if(version==2) { get_be32(pb); /* sizeof struct only */ st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */ st->codec->channels = get_be32(pb); get_be32(pb); /* always 0x7F000000 */ st->codec->bits_per_coded_sample = get_be32(pb); /* bits per channel if sound is uncompressed */ flags = get_be32(pb); /* lcpm format specific flag */ sc->bytes_per_frame = get_be32(pb); /* bytes per audio packet if constant */ sc->samples_per_frame = get_be32(pb); /* lpcm frames per audio packet if constant */ if (format == MKTAG('l','p','c','m')) st->codec->codec_id = mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags); } } switch (st->codec->codec_id) { case CODEC_ID_PCM_S8: case CODEC_ID_PCM_U8: if (st->codec->bits_per_coded_sample == 16) st->codec->codec_id = CODEC_ID_PCM_S16BE; break; case CODEC_ID_PCM_S16LE: case CODEC_ID_PCM_S16BE: if (st->codec->bits_per_coded_sample == 8) st->codec->codec_id = CODEC_ID_PCM_S8; else if (st->codec->bits_per_coded_sample == 24) st->codec->codec_id = st->codec->codec_id == CODEC_ID_PCM_S16BE ? CODEC_ID_PCM_S24BE : CODEC_ID_PCM_S24LE; break; /* set values for old format before stsd version 1 appeared */ case CODEC_ID_MACE3: sc->samples_per_frame = 6; sc->bytes_per_frame = 2*st->codec->channels; break; case CODEC_ID_MACE6: sc->samples_per_frame = 6; sc->bytes_per_frame = 1*st->codec->channels; break; case CODEC_ID_ADPCM_IMA_QT: sc->samples_per_frame = 64; sc->bytes_per_frame = 34*st->codec->channels; break; case CODEC_ID_GSM: sc->samples_per_frame = 160; sc->bytes_per_frame = 33; break; default: break; } bits_per_sample = av_get_bits_per_sample(st->codec->codec_id); if (bits_per_sample) { st->codec->bits_per_coded_sample = bits_per_sample; sc->sample_size = (bits_per_sample >> 3) * st->codec->channels; } } else if(st->codec->codec_type==CODEC_TYPE_SUBTITLE){ // ttxt stsd contains display flags, justification, background // color, fonts, and default styles, so fake an atom to read it MOVAtom fake_atom = { .size = size - (url_ftell(pb) - start_pos) }; mov_read_glbl(c, pb, fake_atom); st->codec->codec_id= id; st->codec->width = sc->width; st->codec->height = sc->height; } else { /* other codec type, just skip (rtp, mp4s, tmcd ...) */ url_fskip(pb, size - (url_ftell(pb) - start_pos)); } /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */ a.size = size - (url_ftell(pb) - start_pos); if (a.size > 8) { if (mov_read_default(c, pb, a) < 0) return -1; } else if (a.size > 0) url_fskip(pb, a.size); } if(st->codec->codec_type==CODEC_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1) st->codec->sample_rate= sc->time_scale; /* special codec parameters handling */ switch (st->codec->codec_id) { #if CONFIG_DV_DEMUXER case CODEC_ID_DVAUDIO: c->dv_fctx = avformat_alloc_context(); c->dv_demux = dv_init_demux(c->dv_fctx); if (!c->dv_demux) { av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n"); return -1; } sc->dv_audio_container = 1; st->codec->codec_id = CODEC_ID_PCM_S16LE; break; #endif /* no ifdef since parameters are always those */ case CODEC_ID_QCELP: st->codec->frame_size= 160; st->codec->channels= 1; /* really needed */ break; case CODEC_ID_AMR_NB: case CODEC_ID_AMR_WB: st->codec->frame_size= sc->samples_per_frame; st->codec->channels= 1; /* really needed */ /* force sample rate for amr, stsd in 3gp does not store sample rate */ if (st->codec->codec_id == CODEC_ID_AMR_NB) st->codec->sample_rate = 8000; else if (st->codec->codec_id == CODEC_ID_AMR_WB) st->codec->sample_rate = 16000; break; case CODEC_ID_MP2: case CODEC_ID_MP3: st->codec->codec_type = CODEC_TYPE_AUDIO; /* force type after stsd for m1a hdlr */ st->need_parsing = AVSTREAM_PARSE_FULL; break; case CODEC_ID_GSM: case CODEC_ID_ADPCM_MS: case CODEC_ID_ADPCM_IMA_WAV: st->codec->block_align = sc->bytes_per_frame; break; case CODEC_ID_ALAC: if (st->codec->extradata_size == 36) { st->codec->frame_size = AV_RB32(st->codec->extradata+12); st->codec->channels = AV_RB8 (st->codec->extradata+21); } break; default: break; } return 0; } static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOVAtom atom) { AVStream *st = c->fc->streams[c->fc->nb_streams-1]; MOVStreamContext *sc = st->priv_data; unsigned int i, entries; get_byte(pb); /* version */ get_be24(pb); /* flags */ entries = get_be32(pb); dprintf(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries); if(entries >= UINT_MAX / sizeof(*sc->stsc_data)) return -1; sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data)); if (!sc->stsc_data) return AVERROR(ENOMEM); sc->stsc_count = entries; for(i=0; istsc_data[i].first = get_be32(pb); sc->stsc_data[i].count = get_be32(pb); sc->stsc_data[i].id = get_be32(pb); } return 0; } static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOVAtom atom) { AVStream *st = c->fc->streams[c->fc->nb_streams-1]; MOVStreamContext *sc = st->priv_data; unsigned int i, entries; get_byte(pb); /* version */ get_be24(pb); /* flags */ entries = get_be32(pb); dprintf(c->fc, "keyframe_count = %d\n", entries); if(entries >= UINT_MAX / sizeof(int)) return -1; sc->keyframes = av_malloc(entries * sizeof(int)); if (!sc->keyframes) return AVERROR(ENOMEM); sc->keyframe_count = entries; for(i=0; ikeyframes[i] = get_be32(pb); //dprintf(c->fc, "keyframes[]=%d\n", sc->keyframes[i]); } return 0; } static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOVAtom atom) { AVStream *st = c->fc->streams[c->fc->nb_streams-1]; MOVStreamContext *sc = st->priv_data; unsigned int i, entries, sample_size; get_byte(pb); /* version */ get_be24(pb); /* flags */ sample_size = get_be32(pb); if (!sc->sample_size) /* do not overwrite value computed in stsd */ sc->sample_size = sample_size; entries = get_be32(pb); dprintf(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries); sc->sample_count = entries; if (sample_size) return 0; if(entries >= UINT_MAX / sizeof(int)) return -1; sc->sample_sizes = av_malloc(entries * sizeof(int)); if (!sc->sample_sizes) return AVERROR(ENOMEM); for(i=0; isample_sizes[i] = get_be32(pb); return 0; } static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOVAtom atom) { AVStream *st = c->fc->streams[c->fc->nb_streams-1]; MOVStreamContext *sc = st->priv_data; unsigned int i, entries; int64_t duration=0; int64_t total_sample_count=0; get_byte(pb); /* version */ get_be24(pb); /* flags */ entries = get_be32(pb); dprintf(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries); if(entries >= UINT_MAX / sizeof(*sc->stts_data)) return -1; sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data)); if (!sc->stts_data) return AVERROR(ENOMEM); sc->stts_count = entries; for(i=0; istts_data[i].count= sample_count; sc->stts_data[i].duration= sample_duration; sc->time_rate= av_gcd(sc->time_rate, sample_duration); dprintf(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration); duration+=(int64_t)sample_duration*sample_count; total_sample_count+=sample_count; } st->nb_frames= total_sample_count; if(duration) st->duration= duration; return 0; } static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOVAtom atom) { AVStream *st = c->fc->streams[c->fc->nb_streams-1]; MOVStreamContext *sc = st->priv_data; unsigned int i, entries; get_byte(pb); /* version */ get_be24(pb); /* flags */ entries = get_be32(pb); dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries); if(entries >= UINT_MAX / sizeof(*sc->ctts_data)) return -1; sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data)); if (!sc->ctts_data) return AVERROR(ENOMEM); sc->ctts_count = entries; for(i=0; iwrong_dts = 1; st->codec->has_b_frames = 1; } sc->ctts_data[i].count = count; sc->ctts_data[i].duration= duration; sc->time_rate= av_gcd(sc->time_rate, FFABS(duration)); } return 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 i, j; /* adjust first dts according to edit list */ if (sc->time_offset) { assert(sc->time_offset % sc->time_rate == 0); current_dts = - (sc->time_offset / sc->time_rate); } /* only use old uncompressed audio chunk demuxing when stts specifies it */ if (!(st->codec->codec_type == CODEC_TYPE_AUDIO && sc->stts_count == 1 && sc->stts_data[0].duration == 1)) { unsigned int current_sample = 0; unsigned int stts_sample = 0; unsigned int keyframe, sample_size; unsigned int distance = 0; int key_off = sc->keyframes && sc->keyframes[0] == 1; st->nb_frames = sc->sample_count; 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++; for (j = 0; j < sc->stsc_data[stsc_index].count; j++) { if (current_sample >= sc->sample_count) { av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n"); goto out; } keyframe = !sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index]; if (keyframe) { distance = 0; if (stss_index + 1 < sc->keyframe_count) stss_index++; } sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample]; if(sc->pseudo_stream_id == -1 || sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) { av_add_index_entry(st, current_offset, current_dts, sample_size, distance, keyframe ? AVINDEX_KEYFRAME : 0); dprintf(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", " "size %d, distance %d, keyframe %d\n", st->index, current_sample, current_offset, current_dts, sample_size, distance, keyframe); } current_offset += sample_size; assert(sc->stts_data[stts_index].duration % sc->time_rate == 0); current_dts += sc->stts_data[stts_index].duration / sc->time_rate; 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++; } } } } else { /* read whole chunk */ unsigned int chunk_samples, chunk_size, chunk_duration; unsigned int frames = 1; 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; /* get chunk size, beware of alaw/ulaw/mace */ if (sc->samples_per_frame > 0 && (chunk_samples * sc->bytes_per_frame % sc->samples_per_frame == 0)) { if (sc->samples_per_frame < 160) chunk_size = chunk_samples * sc->bytes_per_frame / sc->samples_per_frame; else { chunk_size = sc->bytes_per_frame; frames = chunk_samples / sc->samples_per_frame; chunk_samples = sc->samples_per_frame; } } else chunk_size = chunk_samples * sc->sample_size; for (j = 0; j < frames; j++) { av_add_index_entry(st, current_offset, current_dts, chunk_size, 0, AVINDEX_KEYFRAME); /* get chunk duration */ chunk_duration = 0; while (chunk_samples > 0) { if (chunk_samples < sc->stts_data[stts_index].count) { chunk_duration += sc->stts_data[stts_index].duration * chunk_samples; sc->stts_data[stts_index].count -= chunk_samples; break; } else { chunk_duration += sc->stts_data[stts_index].duration * chunk_samples; chunk_samples -= sc->stts_data[stts_index].count; if (stts_index + 1 < sc->stts_count) stts_index++; } } current_offset += sc->bytes_per_frame; dprintf(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", " "size %d, duration %d\n", st->index, i, current_offset, current_dts, chunk_size, chunk_duration); assert(chunk_duration % sc->time_rate == 0); current_dts += chunk_duration / sc->time_rate; } } } out: /* adjust sample count to avindex entries */ sc->sample_count = st->nb_index_entries; } static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOVAtom atom) { AVStream *st; MOVStreamContext *sc; int ret; st = av_new_stream(c->fc, c->fc->nb_streams); if (!st) return AVERROR(ENOMEM); sc = av_mallocz(sizeof(MOVStreamContext)); if (!sc) return AVERROR(ENOMEM); st->priv_data = sc; st->codec->codec_type = CODEC_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); sc->sample_count = 0; //ignore track return 0; } if(!sc->time_rate) sc->time_rate=1; if(!sc->time_scale) sc->time_scale= c->time_scale; av_set_pts_info(st, 64, sc->time_rate, sc->time_scale); if (st->codec->codec_type == CODEC_TYPE_AUDIO && !st->codec->frame_size && sc->stts_count == 1) { st->codec->frame_size = av_rescale(sc->stts_data[0].duration, st->codec->sample_rate, sc->time_scale); dprintf(c->fc, "frame size %d\n", st->codec->frame_size); } if(st->duration != AV_NOPTS_VALUE){ assert(st->duration % sc->time_rate == 0); st->duration /= sc->time_rate; } mov_build_index(c, st); if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) { if (url_fopen(&sc->pb, sc->drefs[sc->dref_id-1].path, URL_RDONLY) < 0) av_log(c->fc, AV_LOG_ERROR, "stream %d, error opening file %s: %s\n", st->index, sc->drefs[sc->dref_id-1].path, strerror(errno)); } else sc->pb = c->fc->pb; switch (st->codec->codec_id) { #if CONFIG_H261_DECODER case CODEC_ID_H261: #endif #if CONFIG_H263_DECODER case CODEC_ID_H263: #endif #if CONFIG_MPEG4_DECODER case 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); return 0; } static int mov_read_ilst(MOVContext *c, ByteIOContext *pb, MOVAtom atom) { int ret; c->itunes_metadata = 1; ret = mov_read_default(c, pb, atom); c->itunes_metadata = 0; return ret; } static int mov_read_meta(MOVContext *c, ByteIOContext *pb, MOVAtom atom) { url_fskip(pb, 4); // version + flags atom.size -= 4; return mov_read_default(c, pb, atom); } static int mov_read_trkn(MOVContext *c, ByteIOContext *pb, MOVAtom atom) { char track[16]; get_be32(pb); // type get_be32(pb); // unknown snprintf(track, sizeof(track), "%d", get_be32(pb)); av_metadata_set(&c->fc->metadata, "track", track); dprintf(c->fc, "%.4s %s\n", (char*)&atom.type, track); return 0; } static int mov_read_udta_string(MOVContext *c, ByteIOContext *pb, MOVAtom atom) { char str[1024], key2[16], language[4] = {0}; const char *key = NULL; uint16_t str_size; if (c->itunes_metadata) { int data_size = get_be32(pb); int tag = get_le32(pb); if (tag == MKTAG('d','a','t','a')) { get_be32(pb); // type get_be32(pb); // unknown str_size = data_size - 16; atom.size -= 16; } else return 0; } else { str_size = get_be16(pb); // string length ff_mov_lang_to_iso639(get_be16(pb), language); atom.size -= 4; } switch (atom.type) { case MKTAG(0xa9,'n','a','m'): key = "title"; break; case MKTAG(0xa9,'a','u','t'): case MKTAG(0xa9,'A','R','T'): case MKTAG(0xa9,'w','r','t'): key = "author"; break; case MKTAG(0xa9,'c','p','y'): key = "copyright"; 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 = "year"; break; case MKTAG(0xa9,'g','e','n'): key = "genre"; break; case MKTAG(0xa9,'t','o','o'): case MKTAG(0xa9,'e','n','c'): key = "muxer"; break; } if (!key) return 0; if (atom.size < 0) return -1; str_size = FFMIN3(sizeof(str)-1, str_size, atom.size); get_buffer(pb, str, str_size); str[str_size] = 0; av_metadata_set(&c->fc->metadata, key, str); if (*language && strcmp(language, "und")) { snprintf(key2, sizeof(key2), "%s-%s", key, language); av_metadata_set(&c->fc->metadata, key2, str); } dprintf(c->fc, "%.4s %s %d %lld\n", (char*)&atom.type, str, str_size, atom.size); return 0; } static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom) { int i; int width; int height; int64_t disp_transform[2]; int display_matrix[3][2]; AVStream *st = c->fc->streams[c->fc->nb_streams-1]; MOVStreamContext *sc = st->priv_data; int version = get_byte(pb); get_be24(pb); /* flags */ /* MOV_TRACK_ENABLED 0x0001 MOV_TRACK_IN_MOVIE 0x0002 MOV_TRACK_IN_PREVIEW 0x0004 MOV_TRACK_IN_POSTER 0x0008 */ if (version == 1) { get_be64(pb); get_be64(pb); } else { get_be32(pb); /* creation time */ get_be32(pb); /* modification time */ } st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/ get_be32(pb); /* reserved */ /* highlevel (considering edits) duration in movie timebase */ (version == 1) ? get_be64(pb) : get_be32(pb); get_be32(pb); /* reserved */ get_be32(pb); /* reserved */ get_be16(pb); /* layer */ get_be16(pb); /* alternate group */ get_be16(pb); /* volume */ get_be16(pb); /* reserved */ //read in the display matrix (outlined in ISO 14496-12, Section 6.2.2) // they're kept in fixed point format through all calculations // ignore u,v,z b/c we don't need the scale factor to calc aspect ratio for (i = 0; i < 3; i++) { display_matrix[i][0] = get_be32(pb); // 16.16 fixed point display_matrix[i][1] = get_be32(pb); // 16.16 fixed point get_be32(pb); // 2.30 fixed point (not used) } width = get_be32(pb); // 16.16 fixed point track width height = get_be32(pb); // 16.16 fixed point track height sc->width = width >> 16; sc->height = height >> 16; //transform the display width/height according to the matrix // skip this if the display matrix is the default identity matrix // to keep the same scale, use [width height 1<<16] if (width && height && (display_matrix[0][0] != 65536 || display_matrix[0][1] || display_matrix[1][0] || display_matrix[1][1] != 65536 || 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, ByteIOContext *pb, MOVAtom atom) { MOVFragment *frag = &c->fragment; MOVTrackExt *trex = NULL; int flags, track_id, i; get_byte(pb); /* version */ flags = get_be24(pb); track_id = get_be32(pb); if (!track_id || track_id > c->fc->nb_streams) return -1; 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 -1; } if (flags & 0x01) frag->base_data_offset = get_be64(pb); else frag->base_data_offset = frag->moof_offset; if (flags & 0x02) frag->stsd_id = get_be32(pb); else frag->stsd_id = trex->stsd_id; frag->duration = flags & 0x08 ? get_be32(pb) : trex->duration; frag->size = flags & 0x10 ? get_be32(pb) : trex->size; frag->flags = flags & 0x20 ? get_be32(pb) : trex->flags; dprintf(c->fc, "frag flags 0x%x\n", frag->flags); return 0; } static int mov_read_trex(MOVContext *c, ByteIOContext *pb, MOVAtom atom) { MOVTrackExt *trex; if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data)) return -1; trex = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data)); if (!trex) return AVERROR(ENOMEM); c->trex_data = trex; trex = &c->trex_data[c->trex_count++]; get_byte(pb); /* version */ get_be24(pb); /* flags */ trex->track_id = get_be32(pb); trex->stsd_id = get_be32(pb); trex->duration = get_be32(pb); trex->size = get_be32(pb); trex->flags = get_be32(pb); return 0; } static int mov_read_trun(MOVContext *c, ByteIOContext *pb, MOVAtom atom) { MOVFragment *frag = &c->fragment; AVStream *st; MOVStreamContext *sc; uint64_t offset; int64_t dts; int data_offset = 0; unsigned entries, first_sample_flags = frag->flags; int flags, distance, i; if (!frag->track_id || frag->track_id > c->fc->nb_streams) return -1; st = c->fc->streams[frag->track_id-1]; sc = st->priv_data; if (sc->pseudo_stream_id+1 != frag->stsd_id) return 0; get_byte(pb); /* version */ flags = get_be24(pb); entries = get_be32(pb); dprintf(c->fc, "flags 0x%x entries %d\n", flags, entries); if (flags & 0x001) data_offset = get_be32(pb); if (flags & 0x004) first_sample_flags = get_be32(pb); if (flags & 0x800) { MOVStts *ctts_data; if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data)) return -1; ctts_data = av_realloc(sc->ctts_data, (entries+sc->ctts_count)*sizeof(*sc->ctts_data)); if (!ctts_data) return AVERROR(ENOMEM); sc->ctts_data = ctts_data; } dts = st->duration; offset = frag->base_data_offset + data_offset; distance = 0; dprintf(c->fc, "first sample flags 0x%x\n", first_sample_flags); for (i = 0; i < entries; i++) { unsigned sample_size = frag->size; int sample_flags = i ? frag->flags : first_sample_flags; unsigned sample_duration = frag->duration; int keyframe; if (flags & 0x100) sample_duration = get_be32(pb); if (flags & 0x200) sample_size = get_be32(pb); if (flags & 0x400) sample_flags = get_be32(pb); if (flags & 0x800) { sc->ctts_data[sc->ctts_count].count = 1; sc->ctts_data[sc->ctts_count].duration = get_be32(pb); sc->ctts_count++; } if ((keyframe = st->codec->codec_type == CODEC_TYPE_AUDIO || (flags & 0x004 && !i && !sample_flags) || sample_flags & 0x2000000)) distance = 0; av_add_index_entry(st, offset, dts, sample_size, distance, keyframe ? AVINDEX_KEYFRAME : 0); dprintf(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++; assert(sample_duration % sc->time_rate == 0); dts += sample_duration / sc->time_rate; offset += sample_size; } frag->moof_offset = offset; sc->sample_count = st->nb_index_entries; st->duration = dts; 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, ByteIOContext *pb, MOVAtom atom) { int err; if (atom.size < 8) return 0; /* continue */ if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */ url_fskip(pb, atom.size - 4); return 0; } atom.type = get_le32(pb); atom.offset += 8; atom.size -= 8; if (atom.type != MKTAG('m','d','a','t')) { url_fskip(pb, atom.size); return 0; } err = mov_read_mdat(c, pb, atom); return err; } static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOVAtom atom) { #if CONFIG_ZLIB ByteIOContext ctx; uint8_t *cmov_data; uint8_t *moov_data; /* uncompressed data */ long cmov_len, moov_len; int ret = -1; get_be32(pb); /* dcom atom */ if (get_le32(pb) != MKTAG('d','c','o','m')) return -1; if (get_le32(pb) != MKTAG('z','l','i','b')) { av_log(c->fc, AV_LOG_ERROR, "unknown compression for cmov atom !"); return -1; } get_be32(pb); /* cmvd atom */ if (get_le32(pb) != MKTAG('c','m','v','d')) return -1; moov_len = get_be32(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); } get_buffer(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(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0) goto free_and_return; atom.type = MKTAG('m','o','o','v'); atom.offset = 0; atom.size = moov_len; #ifdef DEBUG // { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); } #endif 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 -1; #endif } /* edit list atom */ static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOVAtom atom) { MOVStreamContext *sc = c->fc->streams[c->fc->nb_streams-1]->priv_data; int i, edit_count; get_byte(pb); /* version */ get_be24(pb); /* flags */ edit_count = get_be32(pb); /* entries */ for(i=0; itime_offset = time; sc->time_rate = av_gcd(sc->time_rate, time); } } if(edit_count > 1) av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, " "a/v desync might occur, patch welcome\n"); dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count); return 0; } static const MOVParseTableEntry mov_default_parse_table[] = { { MKTAG('a','v','s','s'), mov_read_extradata }, { 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_extradata }, { 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_extradata }, { 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_smi }, /* Sorenson extension ??? */ { MKTAG('a','l','a','c'), mov_read_extradata }, /* 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','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('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','x'), mov_read_trex }, { MKTAG('t','r','k','n'), mov_read_trkn }, { 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('w','i','d','e'), mov_read_wide }, /* place holder */ { MKTAG('c','m','o','v'), mov_read_cmov }, { MKTAG(0xa9,'n','a','m'), mov_read_udta_string }, { MKTAG(0xa9,'w','r','t'), mov_read_udta_string }, { MKTAG(0xa9,'c','p','y'), mov_read_udta_string }, { MKTAG(0xa9,'i','n','f'), mov_read_udta_string }, { MKTAG(0xa9,'i','n','f'), mov_read_udta_string }, { MKTAG(0xa9,'A','R','T'), mov_read_udta_string }, { MKTAG(0xa9,'a','l','b'), mov_read_udta_string }, { MKTAG(0xa9,'c','m','t'), mov_read_udta_string }, { MKTAG(0xa9,'a','u','t'), mov_read_udta_string }, { MKTAG(0xa9,'d','a','y'), mov_read_udta_string }, { MKTAG(0xa9,'g','e','n'), mov_read_udta_string }, { MKTAG(0xa9,'e','n','c'), mov_read_udta_string }, { MKTAG(0xa9,'t','o','o'), mov_read_udta_string }, { 0, NULL } }; static int mov_probe(AVProbeData *p) { unsigned int offset; uint32_t tag; int score = 0; /* check file header */ offset = 0; for(;;) { /* ignore invalid offset */ if ((offset + 8) > (unsigned int)p->buf_size) return score; tag = AV_RL32(p->buf + offset + 4); switch(tag) { /* check for obvious tags */ case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */ case MKTAG('m','o','o','v'): 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'): return AVPROBE_SCORE_MAX; /* 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'): return AVPROBE_SCORE_MAX - 5; case MKTAG(0x82,0x82,0x7f,0x7d): case MKTAG('s','k','i','p'): case MKTAG('u','u','i','d'): case MKTAG('p','r','f','l'): offset = AV_RB32(p->buf+offset) + offset; /* if we only find those cause probedata is too small at least rate them */ score = AVPROBE_SCORE_MAX - 50; break; default: /* unrecognized tag */ return score; } } return score; } static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap) { MOVContext *mov = s->priv_data; ByteIOContext *pb = s->pb; int err; MOVAtom atom = { 0, 0, 0 }; mov->fc = s; /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */ if(!url_is_streamed(pb)) atom.size = url_fsize(pb); else atom.size = INT64_MAX; /* check MOV header */ if ((err = mov_read_default(mov, pb, atom)) < 0) { av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err); return err; } if (!mov->found_moov) { av_log(s, AV_LOG_ERROR, "moov atom not found\n"); return -1; } dprintf(mov->fc, "on_parse_exit_offset=%lld\n", url_ftell(pb)); return 0; } static int mov_read_packet(AVFormatContext *s, AVPacket *pkt) { MOVContext *mov = s->priv_data; MOVStreamContext *sc = 0; AVIndexEntry *sample = 0; int64_t best_dts = INT64_MAX; int i, ret; retry: for (i = 0; i < s->nb_streams; i++) { AVStream *st = s->streams[i]; MOVStreamContext *msc = st->priv_data; if (st->discard != AVDISCARD_ALL && msc->pb && msc->current_sample < msc->sample_count) { AVIndexEntry *current_sample = &st->index_entries[msc->current_sample]; int64_t dts = av_rescale(current_sample->timestamp * (int64_t)msc->time_rate, AV_TIME_BASE, msc->time_scale); dprintf(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts); if (!sample || (url_is_streamed(s->pb) && current_sample->pos < sample->pos) || (!url_is_streamed(s->pb) && ((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; sc = msc; } } } if (!sample) { mov->found_mdat = 0; if (!url_is_streamed(s->pb) || mov_read_default(mov, s->pb, (MOVAtom){ 0, 0, INT64_MAX }) < 0 || url_feof(s->pb)) return -1; dprintf(s, "read fragments, offset 0x%llx\n", url_ftell(s->pb)); goto retry; } /* must be done just before reading, to avoid infinite loop on sample */ sc->current_sample++; if (url_fseek(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 -1; } ret = av_get_packet(sc->pb, pkt, sample->size); if (ret < 0) return ret; #if CONFIG_DV_DEMUXER if (mov->dv_demux && sc->dv_audio_container) { dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size); av_free(pkt->data); pkt->size = 0; if (dv_get_packet(mov->dv_demux, pkt) < 0) return -1; } #endif pkt->stream_index = sc->ffindex; pkt->dts = sample->timestamp; if (sc->ctts_data) { assert(sc->ctts_data[sc->ctts_index].duration % sc->time_rate == 0); pkt->pts = pkt->dts + sc->ctts_data[sc->ctts_index].duration / sc->time_rate; /* 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 { AVStream *st = s->streams[sc->ffindex]; int64_t next_dts = (sc->current_sample < sc->sample_count) ? st->index_entries[sc->current_sample].timestamp : st->duration; pkt->duration = next_dts - pkt->dts; pkt->pts = pkt->dts; } pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? PKT_FLAG_KEY : 0; pkt->pos = sample->pos; dprintf(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(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); dprintf(st->codec, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample); if (sample < 0) /* not sure what to do */ return -1; sc->current_sample = sample; dprintf(st->codec, "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 -1; if (sample_time < 0) sample_time = 0; st = s->streams[stream_index]; sample = mov_seek_stream(st, sample_time, flags); if (sample < 0) return -1; /* adjust seek timestamp to found sample timestamp */ seek_timestamp = st->index_entries[sample].timestamp; for (i = 0; i < s->nb_streams; i++) { st = s->streams[i]; if (stream_index == i || st->discard == AVDISCARD_ALL) continue; timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base); mov_seek_stream(st, timestamp, flags); } return 0; } static int mov_read_close(AVFormatContext *s) { int i, j; MOVContext *mov = s->priv_data; for(i=0; inb_streams; i++) { MOVStreamContext *sc = s->streams[i]->priv_data; av_freep(&sc->ctts_data); for (j=0; jdrefs_count; j++) av_freep(&sc->drefs[j].path); av_freep(&sc->drefs); if (sc->pb && sc->pb != s->pb) url_fclose(sc->pb); } if(mov->dv_demux){ for(i=0; idv_fctx->nb_streams; i++){ av_freep(&mov->dv_fctx->streams[i]->codec); av_freep(&mov->dv_fctx->streams[i]); } av_freep(&mov->dv_fctx); av_freep(&mov->dv_demux); } av_freep(&mov->trex_data); return 0; } AVInputFormat mov_demuxer = { "mov,mp4,m4a,3gp,3g2,mj2", NULL_IF_CONFIG_SMALL("QuickTime/MPEG-4/Motion JPEG 2000 format"), sizeof(MOVContext), mov_probe, mov_read_header, mov_read_packet, mov_read_close, mov_read_seek, };