/* * MOV decoder. * Copyright (c) 2001 Fabrice Bellard. * * This library 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 of the License, or (at your option) any later version. * * This library 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 this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include "avformat.h" #include "avi.h" #ifdef CONFIG_ZLIB #include #endif /* * First version by Francois Revol revol@free.fr * * Features and limitations: * - reads most of the QT files I have (at least the structure), * the exceptions are .mov with zlib compressed headers ('cmov' section). It shouldn't be hard to implement. * FIXED, Francois Revol, 07/17/2002 * - ffmpeg has nearly none of the usual QuickTime codecs, * although I succesfully dumped raw and mp3 audio tracks off .mov files. * Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html * - .mp4 parsing is still hazardous, although the format really is QuickTime with some minor changes * (to make .mov parser crash maybe ?), despite what they say in the MPEG FAQ at * http://mpeg.telecomitalialab.com/faq.htm * - 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/techpubs/quicktime/qtdevdocs/QTFF/qtff.html * http://developer.apple.com/techpubs/quicktime/qtdevdocs/PDF/QTFileFormat.pdf * QuickTime is a trademark of Apple (AFAIK :)) */ //#define DEBUG #ifdef DEBUG #include #include #endif /* allows chunk splitting - should work now... */ /* in case you can't read a file, try commenting */ #define MOV_SPLIT_CHUNKS /* Special handling for movies created with Minolta Dimaxe Xi*/ /* this fix should not interfere with other .mov files, but just in case*/ #define MOV_MINOLTA_FIX /* some streams in QT (and in MP4 mostly) aren't either video nor audio */ /* so we first list them as this, then clean up the list of streams we give back, */ /* getting rid of these */ #define CODEC_TYPE_MOV_OTHER (enum CodecType) 2 static const CodecTag mov_video_tags[] = { /* { CODEC_ID_, MKTAG('c', 'v', 'i', 'd') }, *//* Cinepak */ /* { CODEC_ID_H263, MKTAG('r', 'a', 'w', ' ') }, *//* Uncompressed RGB */ /* { CODEC_ID_H263, MKTAG('Y', 'u', 'v', '2') }, *//* Uncompressed YUV422 */ /* { CODEC_ID_RAWVIDEO, MKTAG('A', 'V', 'U', 'I') }, *//* YUV with alpha-channel (AVID Uncompressed) */ /* Graphics */ /* Animation */ /* Apple video */ /* Kodak Photo CD */ { CODEC_ID_MJPEG, MKTAG('j', 'p', 'e', 'g') }, /* PhotoJPEG */ { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'e', 'g') }, /* MPEG */ { CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'a') }, /* Motion-JPEG (format A) */ { CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'b') }, /* Motion-JPEG (format B) */ { CODEC_ID_MJPEG, MKTAG('A', 'V', 'D', 'J') }, /* MJPEG with alpha-channel (AVID JFIF meridien compressed) */ /* { CODEC_ID_MJPEG, MKTAG('A', 'V', 'R', 'n') }, *//* MJPEG with alpha-channel (AVID ABVB/Truevision NuVista) */ /* { CODEC_ID_GIF, MKTAG('g', 'i', 'f', ' ') }, *//* embedded gif files as frames (usually one "click to play movie" frame) */ /* Sorenson video */ { CODEC_ID_SVQ1, MKTAG('S', 'V', 'Q', '1') }, /* Sorenson Video v1 */ { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', '1') }, /* Sorenson Video v1 */ { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', 'i') }, /* Sorenson Video v1 (from QT specs)*/ { CODEC_ID_SVQ3, MKTAG('S', 'V', 'Q', '3') }, /* Sorenson Video v3 */ { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') }, { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') }, /* OpenDiVX *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */ /* { CODEC_ID_, MKTAG('I', 'V', '5', '0') }, *//* Indeo 5.0 */ { CODEC_ID_H263, MKTAG('h', '2', '6', '3') }, /* H263 */ { CODEC_ID_H263, MKTAG('s', '2', '6', '3') }, /* H263 ?? works */ { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', ' ') }, /* DV NTSC */ { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', 'p') }, /* DV PAL */ /* { CODEC_ID_DVVIDEO, MKTAG('A', 'V', 'd', 'v') }, *//* AVID dv */ { CODEC_ID_VP3, MKTAG('V', 'P', '3', '1') }, /* On2 VP3 */ { CODEC_ID_RPZA, MKTAG('r', 'p', 'z', 'a') }, /* Apple Video (RPZA) */ { CODEC_ID_CINEPAK, MKTAG('c', 'v', 'i', 'd') }, /* Cinepak */ { CODEC_ID_NONE, 0 }, }; static const CodecTag mov_audio_tags[] = { /* { CODEC_ID_PCM_S16BE, MKTAG('N', 'O', 'N', 'E') }, *//* uncompressed */ { CODEC_ID_PCM_S16BE, MKTAG('t', 'w', 'o', 's') }, /* 16 bits */ /* { CODEC_ID_PCM_S8, MKTAG('t', 'w', 'o', 's') },*/ /* 8 bits */ { CODEC_ID_PCM_U8, MKTAG('r', 'a', 'w', ' ') }, /* 8 bits unsigned */ { CODEC_ID_PCM_S16LE, MKTAG('s', 'o', 'w', 't') }, /* */ { CODEC_ID_PCM_MULAW, MKTAG('u', 'l', 'a', 'w') }, /* */ { CODEC_ID_PCM_ALAW, MKTAG('a', 'l', 'a', 'w') }, /* */ { CODEC_ID_ADPCM_IMA_QT, MKTAG('i', 'm', 'a', '4') }, /* IMA-4 ADPCM */ { CODEC_ID_MACE3, MKTAG('M', 'A', 'C', '3') }, /* Macintosh Audio Compression and Expansion 3:1 */ { CODEC_ID_MACE6, MKTAG('M', 'A', 'C', '6') }, /* Macintosh Audio Compression and Expansion 6:1 */ { CODEC_ID_MP2, MKTAG('.', 'm', 'p', '3') }, /* MPEG layer 3 */ /* sample files at http://www.3ivx.com/showcase.html use this tag */ { CODEC_ID_MP2, 0x6D730055 }, /* MPEG layer 3 */ { CODEC_ID_MP2, 0x5500736D }, /* MPEG layer 3 *//* XXX: check endianness */ /* { CODEC_ID_OGG_VORBIS, MKTAG('O', 'g', 'g', 'S') }, *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */ /* MP4 tags */ { CODEC_ID_MPEG4AAC, MKTAG('m', 'p', '4', 'a') }, /* MPEG-4 AAC */ /* The standard for mpeg4 audio is still not normalised AFAIK anyway */ { CODEC_ID_AMR_NB, MKTAG('s', 'a', 'm', 'r') }, /* AMR-NB 3gp */ { CODEC_ID_AMR_WB, MKTAG('s', 'a', 'w', 'b') }, /* AMR-WB 3gp */ { CODEC_ID_NONE, 0 }, }; /* 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 MOV_sample_to_chunk_tbl { long first; long count; long id; } MOV_sample_to_chunk_tbl; typedef struct { uint32_t type; int64_t offset; int64_t size; /* total size (excluding the size and type fields) */ } MOV_atom_t; typedef struct { int seed; int flags; int size; void* clrs; } MOV_ctab_t; typedef struct { uint8_t version; uint32_t flags; // 24bit /* 0x03 ESDescrTag */ uint16_t es_id; #define MP4ODescrTag 0x01 #define MP4IODescrTag 0x02 #define MP4ESDescrTag 0x03 #define MP4DecConfigDescrTag 0x04 #define MP4DecSpecificDescrTag 0x05 #define MP4SLConfigDescrTag 0x06 #define MP4ContentIdDescrTag 0x07 #define MP4SupplContentIdDescrTag 0x08 #define MP4IPIPtrDescrTag 0x09 #define MP4IPMPPtrDescrTag 0x0A #define MP4IPMPDescrTag 0x0B #define MP4RegistrationDescrTag 0x0D #define MP4ESIDIncDescrTag 0x0E #define MP4ESIDRefDescrTag 0x0F #define MP4FileIODescrTag 0x10 #define MP4FileODescrTag 0x11 #define MP4ExtProfileLevelDescrTag 0x13 #define MP4ExtDescrTagsStart 0x80 #define MP4ExtDescrTagsEnd 0xFE uint8_t stream_priority; /* 0x04 DecConfigDescrTag */ uint8_t object_type_id; uint8_t stream_type; /* XXX: really streamType is * only 6bit, followed by: * 1bit upStream * 1bit reserved */ uint32_t buffer_size_db; // 24 uint32_t max_bitrate; uint32_t avg_bitrate; /* 0x05 DecSpecificDescrTag */ uint8_t decoder_cfg_len; uint8_t *decoder_cfg; /* 0x06 SLConfigDescrTag */ uint8_t sl_config_len; uint8_t *sl_config; } MOV_esds_t; struct MOVParseTableEntry; typedef struct MOVStreamContext { int ffindex; /* the ffmpeg stream id */ int is_ff_stream; /* Is this stream presented to ffmpeg ? i.e. is this an audio or video stream ? */ long next_chunk; long chunk_count; int64_t *chunk_offsets; long sample_to_chunk_sz; MOV_sample_to_chunk_tbl *sample_to_chunk; long sample_to_chunk_index; long sample_size; long sample_count; long *sample_sizes; int time_scale; long current_sample; long left_in_chunk; /* how many samples before next chunk */ /* specific MPEG4 header which is added at the beginning of the stream */ int header_len; uint8_t *header_data; MOV_esds_t esds; } MOVStreamContext; typedef struct MOVContext { int mp4; /* set to 1 as soon as we are sure that the file is an .mp4 file (even some header parsing depends on this) */ AVFormatContext *fc; int time_scale; int 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 */ int64_t mdat_size; int64_t mdat_offset; int total_streams; /* some streams listed here aren't presented to the ffmpeg API, since they aren't either video nor audio * but we need the info to be able to skip data from those streams in the 'mdat' section */ MOVStreamContext *streams[MAX_STREAMS]; int64_t next_chunk_offset; MOVStreamContext *partial; /* != 0 : there is still to read in the current chunk */ int ctab_size; MOV_ctab_t **ctab; /* color tables */ const struct MOVParseTableEntry *parse_table; /* could be eventually used to change the table */ /* NOTE: for recursion save to/ restore from local variable! */ } 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: 1: found what I wanted, exit 0: continue to parse next atom -1: error occured, exit */ typedef int (*mov_parse_function)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom); /* links atom IDs to parse functions */ typedef struct MOVParseTableEntry { uint32_t type; mov_parse_function func; } MOVParseTableEntry; #ifdef DEBUG /* * XXX: static sux, even more in a multithreaded environment... * Avoid them. This is here just to help debugging. */ static int debug_indent = 0; void print_atom(const char *str, MOV_atom_t atom) { unsigned int tag, i; tag = (unsigned int) atom.type; i=debug_indent; if(tag == 0) tag = MKTAG('N', 'U', 'L', 'L'); while(i--) printf("|"); printf("parse:"); printf(" %s: tag=%c%c%c%c offset=0x%x size=0x%x\n", str, tag & 0xff, (tag >> 8) & 0xff, (tag >> 16) & 0xff, (tag >> 24) & 0xff, (unsigned int)atom.offset, (unsigned int)atom.size); assert((unsigned int)atom.size < 0x7fffffff);// catching errors } #else #define print_atom(a,b) #endif static int mov_read_leaf(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom) { print_atom("leaf", atom); if (atom.size>1) url_fskip(pb, atom.size); /* url_seek(pb, atom_offset+atom.size, SEEK_SET); */ return 0; } static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom) { int64_t total_size = 0; MOV_atom_t a; int i; int err = 0; #ifdef DEBUG print_atom("default", atom); debug_indent++; #endif a.offset = atom.offset; if (atom.size < 0) atom.size = 0x7fffffffffffffffLL; while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) { a.size = atom.size; a.type=0L; if(atom.size >= 8) { a.size = get_be32(pb); a.type = get_le32(pb); } total_size += 8; a.offset += 8; //printf("type: %08x %.4s sz: %Lx %Lx %Lx\n", type, (char*)&type, 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; } for (i = 0; c->parse_table[i].type != 0L && c->parse_table[i].type != a.type; i++) /* empty */; a.size -= 8; // printf(" i=%ld\n", i); if (c->parse_table[i].type == 0) { /* skip leaf atoms data */ // url_seek(pb, atom.offset+atom.size, SEEK_SET); #ifdef DEBUG print_atom("unknown", a); #endif url_fskip(pb, a.size); } else { #ifdef DEBUG //char b[5] = { type & 0xff, (type >> 8) & 0xff, (type >> 16) & 0xff, (type >> 24) & 0xff, 0 }; //print_atom(b, type, offset, size); #endif err = (c->parse_table[i].func)(c, pb, a); } a.offset += a.size; total_size += a.size; } if (!err && total_size < atom.size && atom.size < 0x7ffff) { //printf("RESET %Ld %Ld err:%d\n", atom.size, total_size, err); url_fskip(pb, atom.size - total_size); } #ifdef DEBUG debug_indent--; #endif return err; } static int mov_read_ctab(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom) { unsigned int len; MOV_ctab_t *t; //url_fskip(pb, atom.size); // for now c->ctab = av_realloc(c->ctab, ++c->ctab_size); t = c->ctab[c->ctab_size]; t->seed = get_be32(pb); t->flags = get_be16(pb); t->size = get_be16(pb) + 1; len = 2 * t->size * 4; if (len > 0) { t->clrs = av_malloc(len); // 16bit A R G B if (t->clrs) get_buffer(pb, t->clrs, len); } return 0; } static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom) { AVStream *st = c->fc->streams[c->fc->nb_streams-1]; int len = 0; uint32_t type; uint32_t ctype; print_atom("hdlr", atom); get_byte(pb); /* version */ get_byte(pb); get_byte(pb); get_byte(pb); /* flags */ /* component type */ ctype = get_le32(pb); type = get_le32(pb); /* component subtype */ #ifdef DEBUG printf("ctype= %c%c%c%c (0x%08lx)\n", *((char *)&ctype), ((char *)&ctype)[1], ((char *)&ctype)[2], ((char *)&ctype)[3], (long) ctype); printf("stype= %c%c%c%c\n", *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]); #endif #ifdef DEBUG /* XXX: yeah this is ugly... */ if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */ if(type == MKTAG('v', 'i', 'd', 'e')) puts("hdlr: vide"); else if(type == MKTAG('s', 'o', 'u', 'n')) puts("hdlr: soun"); } else if(ctype == 0) { /* MP4 */ if(type == MKTAG('v', 'i', 'd', 'e')) puts("hdlr: vide"); else if(type == MKTAG('s', 'o', 'u', 'n')) puts("hdlr: soun"); else if(type == MKTAG('o', 'd', 's', 'm')) puts("hdlr: odsm"); else if(type == MKTAG('s', 'd', 's', 'm')) puts("hdlr: sdsm"); } else puts("hdlr: meta"); #endif if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */ /* helps parsing the string hereafter... */ c->mp4 = 0; 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(ctype == 0) { /* MP4 */ /* helps parsing the string hereafter... */ c->mp4 = 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; } 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 */ /* XXX: MP4 uses a C string, not a pascal one */ /* component name */ if(c->mp4) { /* .mp4: C string */ while(get_byte(pb) && (++len < (atom.size - 24))); } else { /* .mov: PASCAL string */ #ifdef DEBUG char* buf; #endif len = get_byte(pb); #ifdef DEBUG buf = (uint8_t*) av_malloc(len+1); if (buf) { get_buffer(pb, buf, len); buf[len] = '\0'; printf("**buf='%s'\n", buf); av_free(buf); } else #endif url_fskip(pb, len); } return 0; } static int mov_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 mov_mp4_read_descr(ByteIOContext *pb, int *tag) { int len; *tag = get_byte(pb); len = mov_mp4_read_descr_len(pb); #ifdef DEBUG printf("MPEG4 description: tag=0x%02x len=%d\n", *tag, len); #endif return len; } static inline unsigned int get_be24(ByteIOContext *s) { unsigned int val; val = get_byte(s) << 16; val |= get_byte(s) << 8; val |= get_byte(s); return val; } static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom) { AVStream *st = c->fc->streams[c->fc->nb_streams-1]; MOVStreamContext *sc = (MOVStreamContext *)st->priv_data; int64_t start_pos = url_ftell(pb); int tag, len; print_atom("esds", atom); /* Well, broken but suffisant for some MP4 streams */ get_be32(pb); /* version + flags */ len = mov_mp4_read_descr(pb, &tag); if (tag == MP4ESDescrTag) { get_be16(pb); /* ID */ get_byte(pb); /* priority */ } else get_be16(pb); /* ID */ len = mov_mp4_read_descr(pb, &tag); if (tag == MP4DecConfigDescrTag) { sc->esds.object_type_id = get_byte(pb); sc->esds.stream_type = get_byte(pb); sc->esds.buffer_size_db = get_be24(pb); sc->esds.max_bitrate = get_be32(pb); sc->esds.avg_bitrate = get_be32(pb); len = mov_mp4_read_descr(pb, &tag); //printf("LEN %d TAG %d m:%d a:%d\n", len, tag, sc->esds.max_bitrate, sc->esds.avg_bitrate); if (tag == MP4DecSpecificDescrTag) { #ifdef DEBUG printf("Specific MPEG4 header len=%d\n", len); #endif st->codec.extradata = (uint8_t*) av_mallocz(len); if (st->codec.extradata) { get_buffer(pb, st->codec.extradata, len); st->codec.extradata_size = len; } } } /* in any case, skip garbage */ url_fskip(pb, atom.size - ((url_ftell(pb) - start_pos))); return 0; } /* this atom contains actual media data */ static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom) { print_atom("mdat", atom); if(atom.size == 0) /* wrong one (MP4) */ return 0; c->found_mdat=1; c->mdat_offset = atom.offset; c->mdat_size = atom.size; if(c->found_moov) return 1; /* found both, just go */ url_fskip(pb, atom.size); return 0; /* now go for moov */ } /* this atom should contain all header atoms */ static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom) { int err; print_atom("moov", atom); err = mov_read_default(c, pb, atom); /* 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; if(c->found_mdat) return 1; /* found both, just go */ return 0; /* now go for mdat */ } static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom) { print_atom("mdhd", atom); get_byte(pb); /* version */ get_byte(pb); get_byte(pb); get_byte(pb); /* flags */ get_be32(pb); /* creation time */ get_be32(pb); /* modification time */ c->streams[c->total_streams]->time_scale = get_be32(pb); #ifdef DEBUG printf("track[%i].time_scale = %i\n", c->fc->nb_streams-1, c->streams[c->total_streams]->time_scale); /* time scale */ #endif get_be32(pb); /* duration */ get_be16(pb); /* language */ get_be16(pb); /* quality */ return 0; } static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom) { print_atom("mvhd", atom); get_byte(pb); /* version */ get_byte(pb); get_byte(pb); get_byte(pb); /* flags */ get_be32(pb); /* creation time */ get_be32(pb); /* modification time */ c->time_scale = get_be32(pb); /* time scale */ #ifdef DEBUG printf("time scale = %i\n", c->time_scale); #endif c->duration = 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, MOV_atom_t atom) { AVStream *st = c->fc->streams[c->fc->nb_streams-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_size = 0x5a + atom.size; st->codec.extradata = (uint8_t*) av_mallocz(st->codec.extradata_size); if (st->codec.extradata) { strcpy(st->codec.extradata, "SVQ3"); // fake get_buffer(pb, st->codec.extradata + 0x5a, atom.size); //printf("Reading SMI %Ld %s\n", atom.size, (char*)st->codec.extradata + 0x5a); } else url_fskip(pb, atom.size); return 0; } static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom) { AVStream *st = c->fc->streams[c->fc->nb_streams-1]; MOVStreamContext *sc = (MOVStreamContext *)st->priv_data; int entries, i; print_atom("stco", atom); get_byte(pb); /* version */ get_byte(pb); get_byte(pb); get_byte(pb); /* flags */ entries = get_be32(pb); sc->chunk_count = entries; sc->chunk_offsets = (int64_t*) av_malloc(entries * sizeof(int64_t)); if (!sc->chunk_offsets) return -1; 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; #ifdef DEBUG /* for(i=0; ichunk_offsets[i]); } */ #endif return 0; } static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom) { AVStream *st = c->fc->streams[c->fc->nb_streams-1]; //MOVStreamContext *sc = (MOVStreamContext *)st->priv_data; int entries, frames_per_sample; uint32_t format; print_atom("stsd", atom); get_byte(pb); /* version */ get_byte(pb); get_byte(pb); get_byte(pb); /* flags */ entries = get_be32(pb); while(entries--) { //Parsing Sample description table enum CodecID id; int size = get_be32(pb); /* size */ format = get_le32(pb); /* data format */ get_be32(pb); /* reserved */ get_be16(pb); /* reserved */ get_be16(pb); /* index */ /* for MPEG4: set codec type by looking for it */ id = codec_get_id(mov_video_tags, format); if (id >= 0) { AVCodec *codec; codec = avcodec_find_decoder(id); if (codec) st->codec.codec_type = codec->type; } #ifdef DEBUG printf("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); #endif st->codec.codec_tag = format; if(st->codec.codec_type==CODEC_TYPE_VIDEO) { MOV_atom_t a = { 0, 0, 0 }; 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); /* spacial quality */ st->codec.width = get_be16(pb); /* width */ st->codec.height = get_be16(pb); /* height */ #if 1 if (st->codec.codec_id == CODEC_ID_MPEG4) { /* in some MPEG4 the width/height are not correct, so we ignore this info */ st->codec.width = 0; st->codec.height = 0; } #endif get_be32(pb); /* horiz resolution */ get_be32(pb); /* vert resolution */ get_be32(pb); /* data size, always 0 */ frames_per_sample = get_be16(pb); /* frames per samples */ #ifdef DEBUG printf("frames/samples = %d\n", frames_per_sample); #endif get_buffer(pb, (uint8_t *)st->codec.codec_name, 32); /* codec name */ st->codec.bits_per_sample = get_be16(pb); /* depth */ st->codec.color_table_id = get_be16(pb); /* colortable id */ /* These are set in mov_read_stts and might already be set! st->codec.frame_rate = 25; st->codec.frame_rate_base = 1; */ size -= (16+8*4+2+32+2*2); #if 0 while (size >= 8) { MOV_atom_t a; int64_t start_pos; a.size = get_be32(pb); a.type = get_le32(pb); size -= 8; #ifdef DEBUG printf("VIDEO: atom_type=%c%c%c%c atom.size=%Ld size_left=%d\n", (a.type >> 0) & 0xff, (a.type >> 8) & 0xff, (a.type >> 16) & 0xff, (a.type >> 24) & 0xff, a.size, size); #endif start_pos = url_ftell(pb); switch(a.type) { case MKTAG('e', 's', 'd', 's'): { int tag, len; /* Well, broken but suffisant for some MP4 streams */ get_be32(pb); /* version + flags */ len = mov_mp4_read_descr(pb, &tag); if (tag == 0x03) { /* MP4ESDescrTag */ get_be16(pb); /* ID */ get_byte(pb); /* priority */ len = mov_mp4_read_descr(pb, &tag); if (tag != 0x04) goto fail; /* MP4DecConfigDescrTag */ get_byte(pb); /* objectTypeId */ get_be32(pb); /* streamType + buffer size */ get_be32(pb); /* max bit rate */ get_be32(pb); /* avg bit rate */ len = mov_mp4_read_descr(pb, &tag); if (tag != 0x05) goto fail; /* MP4DecSpecificDescrTag */ #ifdef DEBUG printf("Specific MPEG4 header len=%d\n", len); #endif sc->header_data = av_mallocz(len); if (sc->header_data) { get_buffer(pb, sc->header_data, len); sc->header_len = len; } } /* in any case, skip garbage */ } break; default: break; } fail: printf("ATOMENEWSIZE %Ld %d\n", atom.size, url_ftell(pb) - start_pos); if (atom.size > 8) { url_fskip(pb, (atom.size - 8) - ((url_ftell(pb) - start_pos))); size -= atom.size - 8; } } if (size > 0) { /* unknown extension */ url_fskip(pb, size); } #else a.size = size; mov_read_default(c, pb, a); #endif } else { st->codec.codec_id = codec_get_id(mov_audio_tags, format); if(st->codec.codec_id==CODEC_ID_AMR_NB || st->codec.codec_id==CODEC_ID_AMR_WB) //from TS26.244 { #ifdef DEBUG printf("AMR-NB or AMR-WB audio identified!!\n"); #endif get_be32(pb);get_be32(pb); //Reserved_8 get_be16(pb);//Reserved_2 get_be16(pb);//Reserved_2 get_be32(pb);//Reserved_4 get_be16(pb);//TimeScale get_be16(pb);//Reserved_2 //AMRSpecificBox.(10 bytes) get_be32(pb); //size get_be32(pb); //type=='damr' get_be32(pb); //vendor get_byte(pb); //decoder version get_be16(pb); //mode_set get_byte(pb); //mode_change_period get_byte(pb); //frames_per_sample st->duration = AV_NOPTS_VALUE;//Not possible to get from this info, must count number of AMR frames if(st->codec.codec_id==CODEC_ID_AMR_NB) { st->codec.sample_rate=8000; st->codec.channels=1; } else //AMR-WB { st->codec.sample_rate=16000; st->codec.channels=1; } st->codec.bits_per_sample=16; st->codec.bit_rate=0; /*It is not possible to tell this before we have an audio frame and even then every frame can be different*/ } else if( st->codec.codec_tag == MKTAG( 'm', 'p', '4', 's' )) { //This is some stuff for the hint track, lets ignore it! //Do some mp4 auto detect. c->mp4=1; size-=(16); url_fskip(pb, size); /* The mp4s atom also contians a esds atom that we can skip*/ } else if(size>=(16+20)) {//16 bytes read, reading atleast 20 more #ifdef DEBUG printf("audio size=0x%X\n",size); #endif uint16_t version = get_be16(pb); /* version */ get_be16(pb); /* revision level */ get_be32(pb); /* vendor */ st->codec.channels = get_be16(pb); /* channel count */ st->codec.bits_per_sample = get_be16(pb); /* sample size */ /* handle specific s8 codec */ get_be16(pb); /* compression id = 0*/ get_be16(pb); /* packet size = 0 */ st->codec.sample_rate = ((get_be32(pb) >> 16)); //printf("CODECID %d %d %.4s\n", st->codec.codec_id, CODEC_ID_PCM_S16BE, (char*)&format); switch (st->codec.codec_id) { case CODEC_ID_PCM_S16BE: if (st->codec.bits_per_sample == 8) st->codec.codec_id = CODEC_ID_PCM_S8; /* fall */ case CODEC_ID_PCM_U8: st->codec.bit_rate = st->codec.sample_rate * 8; break; default: ; } //Read QT version 1 fields. In version 0 theese dont exist #ifdef DEBUG printf("version =%d mp4=%d\n",version,c->mp4); printf("size-(16+20+16)=%d\n",size-(16+20+16)); #endif if((version==1) && size>=(16+20+16)) { get_be32(pb); /* samples per packet */ get_be32(pb); /* bytes per packet */ get_be32(pb); /* bytes per frame */ get_be32(pb); /* bytes per sample */ if(size>(16+20+16)) { //Optional, additional atom-based fields #ifdef DEBUG printf("offest=0x%X, sizeleft=%d=0x%x,format=%c%c%c%c\n",(int)url_ftell(pb),size - (16 + 20 + 16 ),size - (16 + 20 + 16 ), (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff, (format >> 24) & 0xff); #endif MOV_atom_t a = { format, url_ftell(pb), size - (16 + 20 + 16 + 8) }; mov_read_default(c, pb, a); } } else { //We should be down to 0 bytes here, but lets make sure. size-=(16+20); #ifdef DEBUG if(size>0) printf("skipping 0x%X bytes\n",size-(16+20)); #endif url_fskip(pb, size); } } else { size-=16; //Unknown size, but lets do our best and skip the rest. #ifdef DEBUG printf("Strange size, skipping 0x%X bytes\n",size); #endif url_fskip(pb, size); } } } return 0; } static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom) { AVStream *st = c->fc->streams[c->fc->nb_streams-1]; MOVStreamContext *sc = (MOVStreamContext *)st->priv_data; int entries, i; print_atom("stsc", atom); get_byte(pb); /* version */ get_byte(pb); get_byte(pb); get_byte(pb); /* flags */ entries = get_be32(pb); #ifdef DEBUG printf("track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries); #endif sc->sample_to_chunk_sz = entries; sc->sample_to_chunk = (MOV_sample_to_chunk_tbl*) av_malloc(entries * sizeof(MOV_sample_to_chunk_tbl)); if (!sc->sample_to_chunk) return -1; for(i=0; isample_to_chunk[i].first = get_be32(pb); sc->sample_to_chunk[i].count = get_be32(pb); sc->sample_to_chunk[i].id = get_be32(pb); #ifdef DEBUG /* printf("sample_to_chunk first=%ld count=%ld, id=%ld\n", sc->sample_to_chunk[i].first, sc->sample_to_chunk[i].count, sc->sample_to_chunk[i].id); */ #endif } return 0; } static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom) { AVStream *st = c->fc->streams[c->fc->nb_streams-1]; MOVStreamContext *sc = (MOVStreamContext *)st->priv_data; int entries, i; print_atom("stsz", atom); get_byte(pb); /* version */ get_byte(pb); get_byte(pb); get_byte(pb); /* flags */ sc->sample_size = get_be32(pb); entries = get_be32(pb); sc->sample_count = entries; #ifdef DEBUG printf("sample_size = %ld sample_count = %ld\n", sc->sample_size, sc->sample_count); #endif if(sc->sample_size) return 0; /* there isn't any table following */ sc->sample_sizes = (long*) av_malloc(entries * sizeof(long)); if (!sc->sample_sizes) return -1; for(i=0; isample_sizes[i] = get_be32(pb); #ifdef DEBUG /* printf("sample_sizes[]=%ld\n", sc->sample_sizes[i]); */ #endif } return 0; } static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom) { AVStream *st = c->fc->streams[c->fc->nb_streams-1]; //MOVStreamContext *sc = (MOVStreamContext *)st->priv_data; int entries, i; int duration=0; int total_sample_count=0; print_atom("stts", atom); get_byte(pb); /* version */ get_byte(pb); get_byte(pb); get_byte(pb); /* flags */ entries = get_be32(pb); #ifdef DEBUG printf("track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries); #endif for(i=0; icodec.codec_type==CODEC_TYPE_VIDEO) { st->codec.frame_rate_base = sample_duration ? sample_duration : 1; st->codec.frame_rate = c->streams[c->total_streams]->time_scale; #ifdef DEBUG printf("VIDEO FRAME RATE= %i (sd= %i)\n", st->codec.frame_rate, sample_duration); #endif } #endif } #define MAX(a,b) a>b?a:b #define MIN(a,b) a>b?b:a /*The stsd atom which contain codec type sometimes comes after the stts so we cannot check for codec_type*/ if(duration>0) { //Find greatest common divisor to avoid overflow using the Euclidean Algorithm... uint32_t max=MAX(duration,total_sample_count); uint32_t min=MIN(duration,total_sample_count); uint32_t spare=max%min; while(spare!=0) { max=min; min=spare; spare=max%min; } duration/=min; total_sample_count/=min; //Only support constant frame rate. But lets calculate the average. Needed by .mp4-files created with nec e606 3g phone. //To get better precision, we use the duration as frame_rate_base st->codec.frame_rate_base=duration; st->codec.frame_rate = c->streams[c->total_streams]->time_scale * total_sample_count; #ifdef DEBUG printf("FRAME RATE average (video or audio)= %f (tot sample count= %i ,tot dur= %i timescale=%d)\n", (float)st->codec.frame_rate/st->codec.frame_rate_base,total_sample_count,duration,c->streams[c->total_streams]->time_scale); #endif } else { st->codec.frame_rate_base = 1; st->codec.frame_rate = c->streams[c->total_streams]->time_scale; } #undef MAX #undef MIN return 0; } static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom) { AVStream *st; MOVStreamContext *sc; print_atom("trak", atom); st = av_new_stream(c->fc, c->fc->nb_streams); if (!st) return -2; sc = (MOVStreamContext*) av_mallocz(sizeof(MOVStreamContext)); if (!sc) { av_free(st); return -1; } sc->sample_to_chunk_index = -1; st->priv_data = sc; st->codec.codec_type = CODEC_TYPE_MOV_OTHER; st->start_time = 0; /* XXX: check */ st->duration = (c->duration * (int64_t)AV_TIME_BASE) / c->time_scale; c->streams[c->fc->nb_streams-1] = sc; return mov_read_default(c, pb, atom); } static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom) { AVStream *st; print_atom("tkhd", atom); st = c->fc->streams[c->fc->nb_streams-1]; get_byte(pb); /* version */ get_byte(pb); get_byte(pb); get_byte(pb); /* flags */ /* MOV_TRACK_ENABLED 0x0001 MOV_TRACK_IN_MOVIE 0x0002 MOV_TRACK_IN_PREVIEW 0x0004 MOV_TRACK_IN_POSTER 0x0008 */ get_be32(pb); /* creation time */ get_be32(pb); /* modification time */ st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/ get_be32(pb); /* reserved */ st->start_time = 0; /* check */ st->duration = (get_be32(pb) * (int64_t)AV_TIME_BASE) / c->time_scale; /* duration */ 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 */ url_fskip(pb, 36); /* display matrix */ /* those are fixed-point */ st->codec.width = get_be32(pb) >> 16; /* track width */ st->codec.height = get_be32(pb) >> 16; /* track height */ 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, MOV_atom_t atom) { int err; #ifdef DEBUG print_atom("wide", atom); debug_indent++; #endif 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); #ifdef DEBUG debug_indent--; #endif return err; } #ifdef CONFIG_ZLIB static int null_read_packet(void *opaque, uint8_t *buf, int buf_size) { return -1; } static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom) { ByteIOContext ctx; uint8_t *cmov_data; uint8_t *moov_data; /* uncompressed data */ long cmov_len, moov_len; int ret; print_atom("cmov", atom); 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' )) { dprintf("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 = (uint8_t *) av_malloc(cmov_len); if (!cmov_data) return -1; moov_data = (uint8_t *) av_malloc(moov_len); if (!moov_data) { av_free(cmov_data); return -1; } get_buffer(pb, cmov_data, cmov_len); if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK) return -1; if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, null_read_packet, NULL, NULL) != 0) return -1; ctx.buf_end = ctx.buffer + moov_len; 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); av_free(moov_data); av_free(cmov_data); return ret; } #endif static const MOVParseTableEntry mov_default_parse_table[] = { /* mp4 atoms */ { MKTAG( 'c', 'o', '6', '4' ), mov_read_stco }, { MKTAG( 'c', 'p', 'r', 't' ), mov_read_default }, { MKTAG( 'c', 'r', 'h', 'd' ), mov_read_default }, { MKTAG( 'c', 't', 't', 's' ), mov_read_leaf }, /* composition time to sample */ { MKTAG( 'd', 'i', 'n', 'f' ), mov_read_default }, /* data information */ { MKTAG( 'd', 'p', 'n', 'd' ), mov_read_leaf }, { MKTAG( 'd', 'r', 'e', 'f' ), mov_read_leaf }, { MKTAG( 'e', 'd', 't', 's' ), mov_read_default }, { MKTAG( 'e', 'l', 's', 't' ), mov_read_leaf }, { MKTAG( 'f', 'r', 'e', 'e' ), mov_read_leaf }, { MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr }, { MKTAG( 'h', 'i', 'n', 't' ), mov_read_leaf }, { MKTAG( 'h', 'm', 'h', 'd' ), mov_read_leaf }, { MKTAG( 'i', 'o', 'd', 's' ), mov_read_leaf }, { 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', 'i', 'n', 'f' ), mov_read_default }, { MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov }, { MKTAG( 'm', 'p', '4', 'a' ), mov_read_default }, { MKTAG( 'm', 'p', '4', 's' ), mov_read_default }, { MKTAG( 'm', 'p', '4', 'v' ), mov_read_default }, { MKTAG( 'm', 'p', 'o', 'd' ), mov_read_leaf }, { MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd }, { MKTAG( 'n', 'm', 'h', 'd' ), mov_read_leaf }, { MKTAG( 'o', 'd', 'h', 'd' ), mov_read_default }, { MKTAG( 's', 'd', 'h', 'd' ), mov_read_default }, { MKTAG( 's', 'k', 'i', 'p' ), mov_read_default }, { MKTAG( 's', 'm', 'h', 'd' ), mov_read_leaf }, /* sound media info header */ { MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorrenson extension ??? */ { MKTAG( 's', 't', 'b', 'l' ), mov_read_default }, { MKTAG( 's', 't', 'c', 'o' ), mov_read_stco }, { MKTAG( 's', 't', 'd', 'p' ), mov_read_default }, { MKTAG( 's', 't', 's', 'c' ), mov_read_stsc }, { MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */ { MKTAG( 's', 't', 's', 'h' ), mov_read_default }, { MKTAG( 's', 't', 's', 's' ), mov_read_leaf }, /* 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', 'r', 'a', 'k' ), mov_read_trak }, { MKTAG( 't', 'r', 'e', 'f' ), mov_read_default }, /* not really */ { MKTAG( 'u', 'd', 't', 'a' ), mov_read_leaf }, { MKTAG( 'u', 'r', 'l', ' ' ), mov_read_leaf }, { MKTAG( 'u', 'r', 'n', ' ' ), mov_read_leaf }, { MKTAG( 'u', 'u', 'i', 'd' ), mov_read_default }, { MKTAG( 'v', 'm', 'h', 'd' ), mov_read_leaf }, /* video media info header */ { MKTAG( 'w', 'a', 'v', 'e' ), mov_read_default }, /* extra mp4 */ { MKTAG( 'M', 'D', 'E', 'S' ), mov_read_leaf }, /* QT atoms */ { MKTAG( 'c', 'h', 'a', 'p' ), mov_read_leaf }, { MKTAG( 'c', 'l', 'i', 'p' ), mov_read_default }, { MKTAG( 'c', 'r', 'g', 'n' ), mov_read_leaf }, { MKTAG( 'c', 't', 'a', 'b' ), mov_read_ctab }, { MKTAG( 'e', 's', 'd', 's' ), mov_read_esds }, { MKTAG( 'k', 'm', 'a', 't' ), mov_read_leaf }, { MKTAG( 'm', 'a', 't', 't' ), mov_read_default }, { MKTAG( 'r', 'd', 'r', 'f' ), mov_read_leaf }, { MKTAG( 'r', 'm', 'd', 'a' ), mov_read_default }, { MKTAG( 'r', 'm', 'd', 'r' ), mov_read_leaf }, { MKTAG( 'r', 'm', 'r', 'a' ), mov_read_default }, { MKTAG( 's', 'c', 'p', 't' ), mov_read_leaf }, { MKTAG( 's', 's', 'r', 'c' ), mov_read_leaf }, { MKTAG( 's', 'y', 'n', 'c' ), mov_read_leaf }, { MKTAG( 't', 'c', 'm', 'd' ), mov_read_leaf }, { MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */ //{ MKTAG( 'r', 'm', 'q', 'u' ), mov_read_leaf }, #ifdef CONFIG_ZLIB { MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov }, #else { MKTAG( 'c', 'm', 'o', 'v' ), mov_read_leaf }, #endif { 0L, mov_read_leaf } }; static void mov_free_stream_context(MOVStreamContext *sc) { if(sc) { av_free(sc->chunk_offsets); av_free(sc->sample_to_chunk); av_free(sc->sample_sizes); av_free(sc->header_data); av_free(sc); } } static inline uint32_t mov_to_tag(uint8_t *buf) { return MKTAG(buf[0], buf[1], buf[2], buf[3]); } static inline uint32_t to_be32(uint8_t *buf) { return (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3]; } /* XXX: is it sufficient ? */ static int mov_probe(AVProbeData *p) { unsigned int offset; uint32_t tag; /* check file header */ if (p->buf_size <= 12) return 0; offset = 0; for(;;) { /* ignore invalid offset */ if ((offset + 8) > (unsigned int)p->buf_size) return 0; tag = mov_to_tag(p->buf + offset + 4); switch(tag) { case MKTAG( 'm', 'o', 'o', 'v' ): case MKTAG( 'w', 'i', 'd', 'e' ): case MKTAG( 'f', 'r', 'e', 'e' ): 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 */ return AVPROBE_SCORE_MAX; case MKTAG( 'f', 't', 'y', 'p' ): case MKTAG( 's', 'k', 'i', 'p' ): offset = to_be32(p->buf+offset) + offset; break; default: /* unrecognized tag */ return 0; } } return 0; } static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap) { MOVContext *mov = (MOVContext *) s->priv_data; ByteIOContext *pb = &s->pb; int i, j, nb, err; MOV_atom_t atom = { 0, 0, 0 }; mov->fc = s; mov->parse_table = mov_default_parse_table; #if 0 /* XXX: I think we should auto detect */ if(s->iformat->name[1] == 'p') mov->mp4 = 1; #endif if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */ atom.size = url_filesize(url_fileno(pb)); else atom.size = 0x7FFFFFFFFFFFFFFFLL; #ifdef DEBUG printf("filesz=%Ld\n", atom.size); #endif /* check MOV header */ err = mov_read_default(mov, pb, atom); if (err<0 || (!mov->found_moov && !mov->found_mdat)) { fprintf(stderr, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%lld\n", err, mov->found_moov, mov->found_mdat, url_ftell(pb)); return -1; } #ifdef DEBUG printf("on_parse_exit_offset=%d\n", (int) url_ftell(pb)); #endif /* some cleanup : make sure we are on the mdat atom */ if(!url_is_streamed(pb) && (url_ftell(pb) != mov->mdat_offset)) url_fseek(pb, mov->mdat_offset, SEEK_SET); mov->next_chunk_offset = mov->mdat_offset; /* initialise reading */ #ifdef DEBUG printf("mdat_reset_offset=%d\n", (int) url_ftell(pb)); #endif #ifdef DEBUG printf("streams= %d\n", s->nb_streams); #endif mov->total_streams = nb = s->nb_streams; #if 1 for(i=0; inb_streams;) { if(s->streams[i]->codec.codec_type == CODEC_TYPE_MOV_OTHER) {/* not audio, not video, delete */ av_free(s->streams[i]); for(j=i+1; jnb_streams; j++) s->streams[j-1] = s->streams[j]; s->nb_streams--; } else i++; } for(i=0; inb_streams;i++) { MOVStreamContext *sc; sc = (MOVStreamContext *)s->streams[i]->priv_data; sc->ffindex = i; sc->is_ff_stream = 1; } #endif #ifdef DEBUG printf("real streams= %d\n", s->nb_streams); #endif return 0; } /* Yes, this is ugly... I didn't write the specs of QT :p */ /* XXX:remove useless commented code sometime */ static int mov_read_packet(AVFormatContext *s, AVPacket *pkt) { MOVContext *mov = (MOVContext *) s->priv_data; MOVStreamContext *sc; int64_t offset = 0x0FFFFFFFFFFFFFFFLL; int i; int size; size = 0x0FFFFFFF; #ifdef MOV_SPLIT_CHUNKS if (mov->partial) { int idx; sc = mov->partial; idx = sc->sample_to_chunk_index; if (idx < 0) return 0; size = sc->sample_sizes[sc->current_sample]; sc->current_sample++; sc->left_in_chunk--; if (sc->left_in_chunk <= 0) mov->partial = 0; offset = mov->next_chunk_offset; /* extract the sample */ goto readchunk; } #endif again: sc = 0; for(i=0; itotal_streams; i++) { MOVStreamContext *msc = mov->streams[i]; //printf("MOCHUNK %ld %d %p pos:%Ld\n", mov->streams[i]->next_chunk, mov->total_streams, mov->streams[i], url_ftell(&s->pb)); if ((msc->next_chunk < msc->chunk_count) && msc->next_chunk >= 0 && (msc->chunk_offsets[msc->next_chunk] < offset)) { sc = msc; offset = msc->chunk_offsets[msc->next_chunk]; //printf("SELETED %Ld i:%d\n", offset, i); } } if (!sc || offset==0x0FFFFFFFFFFFFFFFLL) return -1; sc->next_chunk++; if(mov->next_chunk_offset < offset) { /* some meta data */ url_fskip(&s->pb, (offset - mov->next_chunk_offset)); mov->next_chunk_offset = offset; } //printf("chunk: [%i] %lli -> %lli\n", st_id, mov->next_chunk_offset, offset); if(!sc->is_ff_stream) { url_fskip(&s->pb, (offset - mov->next_chunk_offset)); mov->next_chunk_offset = offset; offset = 0x0FFFFFFFFFFFFFFFLL; goto again; } /* now get the chunk size... */ for(i=0; itotal_streams; i++) { MOVStreamContext *msc = mov->streams[i]; if ((msc->next_chunk < msc->chunk_count) && ((msc->chunk_offsets[msc->next_chunk] - offset) < size)) size = msc->chunk_offsets[msc->next_chunk] - offset; } #ifdef MOV_MINOLTA_FIX //Make sure that size is according to sample_size (Needed by .mov files //created on a Minolta Dimage Xi where audio chunks contains waste data in the end) //Maybe we should really not only check sc->sample_size, but also sc->sample_sizes //but I have no such movies if (sc->sample_size > 0) { int foundsize=0; for(i=0; i<(sc->sample_to_chunk_sz); i++) { if( (sc->sample_to_chunk[i].first)<=(sc->next_chunk) && (sc->sample_size>0) ) { foundsize=sc->sample_to_chunk[i].count*sc->sample_size; } #ifdef DEBUG /*printf("sample_to_chunk first=%ld count=%ld, id=%ld\n", sc->sample_to_chunk[i].first, sc->sample_to_chunk[i].count, sc->sample_to_chunk[i].id);*/ #endif } if( (foundsize>0) && (foundsizesample_size == 0) { int idx = sc->sample_to_chunk_index; if ((idx + 1 < sc->sample_to_chunk_sz) && (sc->next_chunk >= sc->sample_to_chunk[idx + 1].first)) idx++; sc->sample_to_chunk_index = idx; if (idx >= 0 && sc->sample_to_chunk[idx].count != 1) { mov->partial = sc; /* we'll have to get those samples before next chunk */ sc->left_in_chunk = sc->sample_to_chunk[idx].count - 1; size = sc->sample_sizes[sc->current_sample]; } sc->current_sample++; } #endif readchunk: //printf("chunk: [%i] %lli -> %lli (%i)\n", st_id, offset, offset + size, size); if(size == 0x0FFFFFFF) size = mov->mdat_size + mov->mdat_offset - offset; if(size < 0) return -1; if(size == 0) return -1; url_fseek(&s->pb, offset, SEEK_SET); //printf("READCHUNK hlen: %d %d off: %Ld pos:%Ld\n", size, sc->header_len, offset, url_ftell(&s->pb)); if (sc->header_len > 0) { av_new_packet(pkt, size + sc->header_len); memcpy(pkt->data, sc->header_data, sc->header_len); get_buffer(&s->pb, pkt->data + sc->header_len, size); /* free header */ av_freep(&sc->header_data); sc->header_len = 0; } else { av_new_packet(pkt, size); get_buffer(&s->pb, pkt->data, pkt->size); } pkt->stream_index = sc->ffindex; #ifdef DEBUG /* printf("Packet (%d, %d, %ld) ", pkt->stream_index, st_id, pkt->size); for(i=0; i<8; i++) printf("%02x ", pkt->data[i]); for(i=0; i<8; i++) printf("%c ", (pkt->data[i]) & 0x7F); puts(""); */ #endif mov->next_chunk_offset = offset + size; return 0; } static int mov_read_close(AVFormatContext *s) { int i; MOVContext *mov = (MOVContext *) s->priv_data; for(i=0; itotal_streams; i++) mov_free_stream_context(mov->streams[i]); for(i=0; inb_streams; i++) av_freep(&s->streams[i]); /* free color tabs */ for(i=0; ictab_size; i++) av_freep(&mov->ctab[i]); av_freep(&mov->ctab); return 0; } static AVInputFormat mov_iformat = { "mov,mp4,m4a,3gp", "QuickTime/MPEG4 format", sizeof(MOVContext), mov_probe, mov_read_header, mov_read_packet, mov_read_close, }; int mov_init(void) { av_register_input_format(&mov_iformat); return 0; }