| /* |
| * 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 <limits.h> |
| |
| //#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 <zlib.h> |
| #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 <assert.h> |
| |
| /* 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; i<entries; i++) |
| sc->chunk_offsets[i] = get_be32(pb); |
| else if (atom.type == MKTAG('c','o','6','4')) |
| for(i=0; i<entries; i++) |
| sc->chunk_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_id<entries; pseudo_stream_id++) { |
| //Parsing Sample description table |
| enum CodecID id; |
| int dref_id; |
| MOVAtom a = { 0, 0, 0 }; |
| int64_t start_pos = url_ftell(pb); |
| int size = get_be32(pb); /* size */ |
| uint32_t format = get_le32(pb); /* data format */ |
| |
| get_be32(pb); /* reserved */ |
| get_be16(pb); /* reserved */ |
| dref_id = get_be16(pb); |
| |
| if (st->codec->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; i<entries; i++) { |
| sc->stsc_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; i<entries; i++) { |
| sc->keyframes[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; i<entries; i++) |
| sc->sample_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; i<entries; i++) { |
| int sample_duration; |
| int sample_count; |
| |
| sample_count=get_be32(pb); |
| sample_duration = get_be32(pb); |
| sc->stts_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; i<entries; i++) { |
| int count =get_be32(pb); |
| int duration =get_be32(pb); |
| |
| if (duration < 0) { |
| sc->wrong_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; i<edit_count; i++){ |
| int time; |
| get_be32(pb); /* Track duration */ |
| time = get_be32(pb); /* Media time */ |
| get_be32(pb); /* Media rate */ |
| if (i == 0 && time != -1) { |
| sc->time_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; i<s->nb_streams; i++) { |
| MOVStreamContext *sc = s->streams[i]->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); |
| if (sc->pb && sc->pb != s->pb) |
| url_fclose(sc->pb); |
| } |
| if(mov->dv_demux){ |
| for(i=0; i<mov->dv_fctx->nb_streams; i++){ |
| av_freep(&mov->dv_fctx->streams[i]->codec); |
| av_freep(&mov->dv_fctx->streams[i]); |
| } |
| av_freep(&mov->dv_fctx); |
| av_freep(&mov->dv_demux); |
| } |
| av_freep(&mov->trex_data); |
| return 0; |
| } |
| |
| 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, |
| }; |