diff options
Diffstat (limited to 'libavformat/mov.c')
| -rw-r--r-- | libavformat/mov.c | 1347 |
1 files changed, 1347 insertions, 0 deletions
diff --git a/libavformat/mov.c b/libavformat/mov.c new file mode 100644 index 0000000000..91c7155b08 --- /dev/null +++ b/libavformat/mov.c @@ -0,0 +1,1347 @@ +/* + * 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 <zlib.h> +#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 + +/* allows chunk splitting - should work now... */ +/* in case you can't read a file, try commenting */ +#define MOV_SPLIT_CHUNKS + +#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, UINT32 type, UINT64 offset, UINT64 size) +{ + unsigned int tag, i; + tag = (unsigned int) 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)offset, + (unsigned int)size); +} +#endif + +/* 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 2 + +static const CodecTag mov_video_tags[] = { +/* { CODEC_ID_, MKTAG('c', 'v', 'i', 'd') }, *//* Cinepak */ +/* { CODEC_ID_JPEG, MKTAG('j', 'p', 'e', 'g') }, *//* JPEG */ +/* { CODEC_ID_H263, MKTAG('r', 'a', 'w', ' ') }, *//* Uncompressed RGB */ +/* { CODEC_ID_H263, MKTAG('Y', 'u', 'v', '2') }, *//* Uncompressed YUV422 */ +/* 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_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_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_DVVIDEO, MKTAG('d', 'v', 'c', ' ') }, /* DV NTSC */ + { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', 'p') }, /* DV PAL */ + { 0, 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, 0x20776172 }, /* 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_AAC, MKTAG('m', 'p', '4', 'a') }, *//* MPEG 4 AAC or audio ? */ + /* The standard for mpeg4 audio is still not normalised AFAIK anyway */ + { 0, 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 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 *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; + long 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; +} 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; + long time_scale; + 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 mdat_size; + INT64 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 next_chunk_offset; + int partial; /* != 0 : there is still to read in the current chunk (=id of the stream + 1) */ +} MOVContext; + + +struct MOVParseTableEntry; + +/* 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)(const struct MOVParseTableEntry *parse_table, + ByteIOContext *pb, + UINT32 atom_type, + INT64 atom_offset, /* after the size and type field (and eventually the extended size) */ + INT64 atom_size, /* total size (excluding the size and type fields) */ + void *param); + +/* links atom IDs to parse functions */ +typedef struct MOVParseTableEntry { + UINT32 type; + mov_parse_function func; +} MOVParseTableEntry; + +static int parse_leaf(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param) +{ +#ifdef DEBUG + print_atom("leaf", atom_type, atom_offset, atom_size); +#endif + if(atom_size>1) + url_fskip(pb, atom_size); +/* url_seek(pb, atom_offset+atom_size, SEEK_SET); */ + return 0; +} + + +static int parse_default(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param) +{ + UINT32 type, foo=0; + UINT64 offset, size; + UINT64 total_size = 0; + int i; + int err = 0; + foo=0; +#ifdef DEBUG + print_atom("default", atom_type, atom_offset, atom_size); + debug_indent++; +#endif + + offset = atom_offset; + + if(atom_size < 0) + atom_size = 0x0FFFFFFFFFFFFFFF; + while((total_size < atom_size) && !url_feof(pb) && !err) { + size=atom_size; + type=0L; + if(atom_size >= 8) { + size = get_be32(pb); + type = get_le32(pb); + } + total_size += 8; + offset+=8; +// printf("type: %08lx sz: %08lx", type, size); + if(size == 1) { /* 64 bit extended size */ + size = get_be64(pb); + offset+=8; + total_size+=8; + size-=8; + } + if(size == 0) + size = atom_size - total_size; + size-=8; + for(i=0; parse_table[i].type != 0L && parse_table[i].type != type; i++); + +// printf(" i=%ld\n", i); + if (parse_table[i].type == 0) { /* skip leaf atoms data */ +// url_seek(pb, atom_offset+atom_size, SEEK_SET); +#ifdef DEBUG + print_atom("unknown", type, offset, size); +#endif + url_fskip(pb, size); + } else + err = (parse_table[i].func)(parse_table, pb, type, offset, size, param); + + offset+=size; + total_size+=size; + } + +#ifdef DEBUG + debug_indent--; +#endif + return err; +} + +static int parse_mvhd(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param) +{ + MOVContext *c; +#ifdef DEBUG + print_atom("mvhd", atom_type, atom_offset, atom_size); +#endif + c = (MOVContext *)param; + + 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 = %li\n", c->time_scale); +#endif + 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; +} + +/* this atom should contain all header atoms */ +static int parse_moov(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param) +{ + int err; + MOVContext *c; +#ifdef DEBUG + print_atom("moov", atom_type, atom_offset, atom_size); +#endif + c = (MOVContext *)param; + + err = parse_default(parse_table, pb, atom_type, atom_offset, atom_size, param); + /* 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 */ +} + +/* this atom contains actual media data */ +static int parse_mdat(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param) +{ + MOVContext *c; +#ifdef DEBUG + print_atom("mdat", atom_type, atom_offset, atom_size); +#endif + c = (MOVContext *)param; + + 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 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 parse_wide(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param) +{ + int err; + UINT32 type; +#ifdef DEBUG + print_atom("wide", atom_type, atom_offset, atom_size); + 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; + } + type = get_le32(pb); + if (type != MKTAG('m', 'd', 'a', 't')) { + url_fskip(pb, atom_size - 8); + return 0; + } + err = parse_mdat(parse_table, pb, type, atom_offset + 8, atom_size - 8, param); +#ifdef DEBUG + debug_indent--; +#endif + return err; +} + +static int parse_trak(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param) +{ + MOVContext *c; + AVStream *st; + MOVStreamContext *sc; +#ifdef DEBUG + print_atom("trak", atom_type, atom_offset, atom_size); +#endif + + c = (MOVContext *)param; + st = av_new_stream(c->fc, c->fc->nb_streams); + if (!st) return -2; + sc = av_malloc(sizeof(MOVStreamContext)); + sc->sample_to_chunk_index = -1; + st->priv_data = sc; + st->codec.codec_type = CODEC_TYPE_MOV_OTHER; + c->streams[c->fc->nb_streams-1] = sc; + return parse_default(parse_table, pb, atom_type, atom_offset, atom_size, param); +} + +static int parse_tkhd(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param) +{ + MOVContext *c; + AVStream *st; +#ifdef DEBUG + print_atom("tkhd", atom_type, atom_offset, atom_size); +#endif + + c = (MOVContext *)param; + 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 */ + get_be32(pb); /* 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; +} + +static int parse_mdhd(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param) +{ + MOVContext *c; + AVStream *st; +#ifdef DEBUG + print_atom("mdhd", atom_type, atom_offset, atom_size); +#endif + + c = (MOVContext *)param; + st = c->fc->streams[c->fc->nb_streams-1]; + + 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 = %li\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 parse_hdlr(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param) +{ + MOVContext *c; + int len = 0; + char *buf; + UINT32 type; + AVStream *st; + UINT32 ctype; +#ifdef DEBUG + print_atom("hdlr", atom_type, atom_offset, atom_size); +#endif + c = (MOVContext *)param; + st = c->fc->streams[c->fc->nb_streams-1]; + + 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 */ + len = get_byte(pb); + buf = av_malloc(len+1); + get_buffer(pb, buf, len); + buf[len] = '\0'; +#ifdef DEBUG + printf("**buf='%s'\n", buf); +#endif + av_free(buf); + } +#if 0 + len = get_byte(pb); + /* XXX: use a better heuristic */ + if(len < 32) { + /* assume that it is a Pascal like string */ + buf = av_malloc(len+1); + get_buffer(pb, buf, len); + buf[len] = '\0'; +#ifdef DEBUG + printf("**buf='%s'\n", buf); +#endif + av_free(buf); + } else { + /* MP4 string */ + for(;;) { + if (len == 0) + break; + len = get_byte(pb); + } + } +#endif + + return 0; +} + +static int mp4_read_descr_len(ByteIOContext *pb) +{ + int c, len, count; + + len = 0; + count = 0; + for(;;) { + c = get_byte(pb); + len = (len << 7) | (c & 0x7f); + if ((c & 0x80) == 0) + break; + if (++count == 4) + break; + } + return len; +} + +static int mp4_read_descr(ByteIOContext *pb, int *tag) +{ + int len; + *tag = get_byte(pb); + len = mp4_read_descr_len(pb); +#ifdef DEBUG + printf("MPEG4 description: tag=0x%02x len=%d\n", *tag, len); +#endif + return len; +} + +static int parse_stsd(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param) +{ + MOVContext *c; + int entries, size, samp_sz, frames_per_sample, id; + UINT32 format; + AVStream *st; + MOVStreamContext *sc; +#ifdef DEBUG + print_atom("stsd", atom_type, atom_offset, atom_size); +#endif + c = (MOVContext *)param; + st = c->fc->streams[c->fc->nb_streams-1]; + sc = (MOVStreamContext *)st->priv_data; + + get_byte(pb); /* version */ + get_byte(pb); get_byte(pb); get_byte(pb); /* flags */ + + entries = get_be32(pb); + + while(entries--) { + 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 + if(st->codec.codec_type==CODEC_TYPE_VIDEO) { + st->codec.codec_tag = format; + st->codec.codec_id = codec_get_id(mov_video_tags, format); + 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); /* frame per samples */ +#ifdef DEBUG + printf("frames/samples = %d\n", frames_per_sample); +#endif + url_fskip(pb, 32); /* codec name */ + + get_be16(pb); /* depth */ + get_be16(pb); /* colortable id */ + + st->codec.frame_rate = 25 * FRAME_RATE_BASE; + + size -= (16+8*4+2+32+2*2); + while (size >= 8) { + int atom_size, atom_type; + INT64 start_pos; + + atom_size = get_be32(pb); + atom_type = get_le32(pb); + size -= 8; +#ifdef DEBUG + printf("VIDEO: atom_type=%c%c%c%c atom_size=%d size_left=%d\n", + (atom_type >> 0) & 0xff, + (atom_type >> 8) & 0xff, + (atom_type >> 16) & 0xff, + (atom_type >> 24) & 0xff, + atom_size, size); +#endif + start_pos = url_ftell(pb); + + switch(atom_type) { + case MKTAG('e', 's', 'd', 's'): + { + int tag, len; + /* Well, broken but suffisant for some MP4 streams */ + get_be32(pb); /* version + flags */ + len = mp4_read_descr(pb, &tag); + if (tag == 0x03) { + /* MP4ESDescrTag */ + get_be16(pb); /* ID */ + get_byte(pb); /* priority */ + len = 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 = 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: + 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 { + st->codec.codec_tag = format; + + get_be16(pb); /* version */ + get_be16(pb); /* revision level */ + get_be32(pb); /* vendor */ + + st->codec.channels = get_be16(pb);/* channel count */ + samp_sz = get_be16(pb); /* sample size */ +#ifdef DEBUG + if(samp_sz != 16) + puts("!!! stsd: audio sample size is not 16 bit !"); +#endif + st->codec.codec_id = codec_get_id(mov_audio_tags, format); + /* handle specific s8 codec */ + if (st->codec.codec_id == CODEC_ID_PCM_S16BE && samp_sz == 8) + st->codec.codec_id = CODEC_ID_PCM_S8; + + get_be16(pb); /* compression id = 0*/ + get_be16(pb); /* packet size = 0 */ + + st->codec.sample_rate = ((get_be32(pb) >> 16)); + st->codec.bit_rate = 0; +#if 0 + + get_be16(pb); get_be16(pb); /* */ + get_be16(pb); /* */ + get_be16(pb); /* */ + get_be16(pb); /* */ + get_be16(pb); /* */ +#endif + if(size > 16) + url_fskip(pb, size-(16+20)); + } + } +/* + if(len) { + buf = av_malloc(len+1); + get_buffer(pb, buf, len); + buf[len] = '\0'; + puts(buf); + av_free(buf); + } +*/ + return 0; +} + +static int parse_stco(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param) +{ + MOVContext *c; + int entries, i; + AVStream *st; + MOVStreamContext *sc; +#ifdef DEBUG + print_atom("stco", atom_type, atom_offset, atom_size); +#endif + c = (MOVContext *)param; + st = c->fc->streams[c->fc->nb_streams-1]; + sc = (MOVStreamContext *)st->priv_data; + + 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 = av_malloc(entries * sizeof(INT64)); + 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; +#ifdef DEBUG +/* + for(i=0; i<entries; i++) { + printf("chunk offset=0x%Lx\n", sc->chunk_offsets[i]); + } +*/ +#endif + return 0; +} + +static int parse_stsc(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param) +{ + MOVContext *c; + int entries, i; + AVStream *st; + MOVStreamContext *sc; +#ifdef DEBUG + print_atom("stsc", atom_type, atom_offset, atom_size); +#endif + c = (MOVContext *)param; + st = c->fc->streams[c->fc->nb_streams-1]; + sc = (MOVStreamContext *)st->priv_data; + + 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 = av_malloc(entries * sizeof(MOV_sample_to_chunk_tbl)); + for(i=0; i<entries; i++) { + sc->sample_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 parse_stsz(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param) +{ + MOVContext *c; + int entries, i; + AVStream *st; + MOVStreamContext *sc; +#ifdef DEBUG + print_atom("stsz", atom_type, atom_offset, atom_size); +#endif + c = (MOVContext *)param; + st = c->fc->streams[c->fc->nb_streams-1]; + sc = (MOVStreamContext *)st->priv_data; + + 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 = av_malloc(entries * sizeof(long)); + for(i=0; i<entries; i++) { + sc->sample_sizes[i] = get_be32(pb); +#ifdef DEBUG +/* printf("sample_sizes[]=%ld\n", sc->sample_sizes[i]); */ +#endif + } + return 0; +} + +static int parse_stts(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param) +{ + MOVContext *c; + int entries, i; + AVStream *st; + MOVStreamContext *sc; +#ifdef DEBUG + print_atom("stts", atom_type, atom_offset, atom_size); +#endif + c = (MOVContext *)param; + st = c->fc->streams[c->fc->nb_streams-1]; + sc = (MOVStreamContext *)st->priv_data; + + 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; i<entries; i++) { + int sample_duration; + + get_be32(pb); + sample_duration = get_be32(pb); + + if (!i && st->codec.codec_type==CODEC_TYPE_VIDEO) { + st->codec.frame_rate = FRAME_RATE_BASE * c->streams[c->total_streams]->time_scale; + if (sample_duration) + st->codec.frame_rate /= sample_duration; +#ifdef DEBUG + printf("VIDEO FRAME RATE= %i (sd= %i)\n", st->codec.frame_rate, sample_duration); +#endif + } + } + return 0; +} + +#ifdef CONFIG_ZLIB +static int null_read_packet(void *opaque, UINT8 *buf, int buf_size) +{ + return -1; +} + +static int parse_cmov(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param) +{ + MOVContext *c; + ByteIOContext ctx; + char *cmov_data; + unsigned char *moov_data; /* uncompressed data */ + long cmov_len, moov_len; + int ret; +#ifdef DEBUG + print_atom("cmov", atom_type, atom_offset, atom_size); +#endif + c = (MOVContext *)param; + + 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' )) { + puts("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 -1; + moov_data = av_malloc(moov_len); + if (!moov_data) { + av_free(cmov_data); + return -1; + } + get_buffer(pb, cmov_data, cmov_len); + if(uncompress (moov_data, &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; + ret = parse_default(parse_table, &ctx, MKTAG( 'm', 'o', 'o', 'v' ), 0, moov_len, param); + av_free(moov_data); + av_free(cmov_data); + return ret; +} +#endif + +static const MOVParseTableEntry mov_default_parse_table[] = { +/* mp4 atoms */ +{ MKTAG( 'm', 'p', '4', 'a' ), parse_default }, +{ MKTAG( 'c', 'o', '6', '4' ), parse_stco }, +{ MKTAG( 's', 't', 'c', 'o' ), parse_stco }, +{ MKTAG( 'c', 'r', 'h', 'd' ), parse_default }, +{ MKTAG( 'c', 't', 't', 's' ), parse_leaf }, +{ MKTAG( 'c', 'p', 'r', 't' ), parse_default }, +{ MKTAG( 'u', 'r', 'l', ' ' ), parse_leaf }, +{ MKTAG( 'u', 'r', 'n', ' ' ), parse_leaf }, +{ MKTAG( 'd', 'i', 'n', 'f' ), parse_default }, +{ MKTAG( 'd', 'r', 'e', 'f' ), parse_leaf }, +{ MKTAG( 's', 't', 'd', 'p' ), parse_default }, +{ MKTAG( 'e', 's', 'd', 's' ), parse_default }, +{ MKTAG( 'e', 'd', 't', 's' ), parse_default }, +{ MKTAG( 'e', 'l', 's', 't' ), parse_leaf }, +{ MKTAG( 'u', 'u', 'i', 'd' ), parse_default }, +{ MKTAG( 'f', 'r', 'e', 'e' ), parse_leaf }, +{ MKTAG( 'h', 'd', 'l', 'r' ), parse_hdlr }, +{ MKTAG( 'h', 'm', 'h', 'd' ), parse_leaf }, +{ MKTAG( 'h', 'i', 'n', 't' ), parse_leaf }, +{ MKTAG( 'n', 'm', 'h', 'd' ), parse_leaf }, +{ MKTAG( 'm', 'p', '4', 's' ), parse_default }, +{ MKTAG( 'm', 'd', 'i', 'a' ), parse_default }, +{ MKTAG( 'm', 'd', 'a', 't' ), parse_mdat }, +{ MKTAG( 'm', 'd', 'h', 'd' ), parse_mdhd }, +{ MKTAG( 'm', 'i', 'n', 'f' ), parse_default }, +{ MKTAG( 'm', 'o', 'o', 'v' ), parse_moov }, +{ MKTAG( 'm', 'v', 'h', 'd' ), parse_mvhd }, +{ MKTAG( 'i', 'o', 'd', 's' ), parse_leaf }, +{ MKTAG( 'o', 'd', 'h', 'd' ), parse_default }, +{ MKTAG( 'm', 'p', 'o', 'd' ), parse_leaf }, +{ MKTAG( 's', 't', 's', 'd' ), parse_stsd }, +{ MKTAG( 's', 't', 's', 'z' ), parse_stsz }, +{ MKTAG( 's', 't', 'b', 'l' ), parse_default }, +{ MKTAG( 's', 't', 's', 'c' ), parse_stsc }, +{ MKTAG( 's', 'd', 'h', 'd' ), parse_default }, +{ MKTAG( 's', 't', 's', 'h' ), parse_default }, +{ MKTAG( 's', 'k', 'i', 'p' ), parse_default }, +{ MKTAG( 's', 'm', 'h', 'd' ), parse_leaf }, +{ MKTAG( 'd', 'p', 'n', 'd' ), parse_leaf }, +{ MKTAG( 's', 't', 's', 's' ), parse_leaf }, +{ MKTAG( 's', 't', 't', 's' ), parse_stts }, +{ MKTAG( 't', 'r', 'a', 'k' ), parse_trak }, +{ MKTAG( 't', 'k', 'h', 'd' ), parse_tkhd }, +{ MKTAG( 't', 'r', 'e', 'f' ), parse_default }, /* not really */ +{ MKTAG( 'u', 'd', 't', 'a' ), parse_leaf }, +{ MKTAG( 'v', 'm', 'h', 'd' ), parse_leaf }, +{ MKTAG( 'm', 'p', '4', 'v' ), parse_default }, +/* extra mp4 */ +{ MKTAG( 'M', 'D', 'E', 'S' ), parse_leaf }, +/* QT atoms */ +{ MKTAG( 'c', 'h', 'a', 'p' ), parse_leaf }, +{ MKTAG( 'c', 'l', 'i', 'p' ), parse_default }, +{ MKTAG( 'c', 'r', 'g', 'n' ), parse_leaf }, +{ MKTAG( 'k', 'm', 'a', 't' ), parse_leaf }, +{ MKTAG( 'm', 'a', 't', 't' ), parse_default }, +{ MKTAG( 'r', 'd', 'r', 'f' ), parse_leaf }, +{ MKTAG( 'r', 'm', 'd', 'a' ), parse_default }, +{ MKTAG( 'r', 'm', 'd', 'r' ), parse_leaf }, +//{ MKTAG( 'r', 'm', 'q', 'u' ), parse_leaf }, +{ MKTAG( 'r', 'm', 'r', 'a' ), parse_default }, +{ MKTAG( 's', 'c', 'p', 't' ), parse_leaf }, +{ MKTAG( 's', 'y', 'n', 'c' ), parse_leaf }, +{ MKTAG( 's', 's', 'r', 'c' ), parse_leaf }, +{ MKTAG( 't', 'c', 'm', 'd' ), parse_leaf }, +{ MKTAG( 'w', 'i', 'd', 'e' ), parse_wide }, /* place holder */ +#ifdef CONFIG_ZLIB +{ MKTAG( 'c', 'm', 'o', 'v' ), parse_cmov }, +#else +{ MKTAG( 'c', 'm', 'o', 'v' ), parse_leaf }, +#endif +{ 0L, parse_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->header_data); + av_free(sc); + } +} + +static uint32_t to_tag(uint8_t *buf) +{ + return buf[0] | (buf[1] << 8) | (buf[2] << 16) | (buf[3] << 24); +} + +static uint32_t to_be32(uint8_t *buf) +{ + return (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3]; +} + +/* XXX: is it suffisant ? */ +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 = 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'): + return AVPROBE_SCORE_MAX; + case MKTAG( 'f', 't', 'y', 'p' ): + case MKTAG( 's', 'k', 'i', 'p' ): + offset = to_be32(p->buf) + offset; + break; + default: + /* unrecognized tag */ + return 0; + } + } + return 0; +} + +static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap) +{ + MOVContext *mov = s->priv_data; + ByteIOContext *pb = &s->pb; + int i, j, nb, err; + INT64 size; + + mov->fc = s; +#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) */ + size = url_filesize(url_fileno(pb)); + else + size = 0x7FFFFFFFFFFFFFFF; + +#ifdef DEBUG + printf("filesz=%Ld\n", size); +#endif + + /* check MOV header */ + err = parse_default(mov_default_parse_table, pb, 0L, 0LL, size, mov); + if(err<0 || (!mov->found_moov || !mov->found_mdat)) { + puts("header not found !!!"); + exit(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; i<s->nb_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; j<s->nb_streams; j++) + s->streams[j-1] = s->streams[j]; + s->nb_streams--; + } else + i++; + } + for(i=0; i<s->nb_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 = s->priv_data; + MOVStreamContext *sc; + INT64 offset = 0x0FFFFFFFFFFFFFFF; + int i; + int st_id = 0, size; + size = 0x0FFFFFFF; + +#ifdef MOV_SPLIT_CHUNKS + if (mov->partial) { + + int idx; + + st_id = mov->partial - 1; + idx = mov->streams[st_id]->sample_to_chunk_index; + if (idx < 0) return 0; + size = mov->streams[st_id]->sample_sizes[mov->streams[st_id]->current_sample]; + + mov->streams[st_id]->current_sample++; + mov->streams[st_id]->left_in_chunk--; + + if(mov->streams[st_id]->left_in_chunk <= 0) + mov->partial = 0; + offset = mov->next_chunk_offset; + /* extract the sample */ + + goto readchunk; + } +#endif + +again: + for(i=0; i<mov->total_streams; i++) { + if((mov->streams[i]->next_chunk < mov->streams[i]->chunk_count) + && (mov->streams[i]->chunk_offsets[mov->streams[i]->next_chunk] < offset)) { + st_id = i; + offset = mov->streams[i]->chunk_offsets[mov->streams[i]->next_chunk]; + } + } + mov->streams[st_id]->next_chunk++; + if(offset==0x0FFFFFFFFFFFFFFF) + return -1; + + 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(!mov->streams[st_id]->is_ff_stream) { + url_fskip(&s->pb, (offset - mov->next_chunk_offset)); + mov->next_chunk_offset = offset; + offset = 0x0FFFFFFFFFFFFFFF; + goto again; + } + + /* now get the chunk size... */ + + for(i=0; i<mov->total_streams; i++) { + if((mov->streams[i]->next_chunk < mov->streams[i]->chunk_count) + && ((mov->streams[i]->chunk_offsets[mov->streams[i]->next_chunk] - offset) < size)) { + size = mov->streams[i]->chunk_offsets[mov->streams[i]->next_chunk] - offset; + } + } +#ifdef MOV_SPLIT_CHUNKS + /* split chunks into samples */ + if(mov->streams[st_id]->sample_size == 0) { + int idx; + idx = mov->streams[st_id]->sample_to_chunk_index; + if ((idx + 1 < mov->streams[st_id]->sample_to_chunk_sz) + && (mov->streams[st_id]->next_chunk >= mov->streams[st_id]->sample_to_chunk[idx + 1].first)) + idx++; + mov->streams[st_id]->sample_to_chunk_index = idx; + if(idx >= 0 && mov->streams[st_id]->sample_to_chunk[idx].count != 1) { + mov->partial = st_id+1; + /* we'll have to get those samples before next chunk */ + mov->streams[st_id]->left_in_chunk = (mov->streams[st_id]->sample_to_chunk[idx].count) - 1; + size = mov->streams[st_id]->sample_sizes[mov->streams[st_id]->current_sample]; + } + + mov->streams[st_id]->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); + sc = mov->streams[st_id]; + 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 = s->priv_data; + for(i=0; i<mov->total_streams; i++) + mov_free_stream_context(mov->streams[i]); + for(i=0; i<s->nb_streams; i++) + av_freep(&s->streams[i]); + return 0; +} + +static AVInputFormat mov_iformat = { + "mov", + "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; +} |