3 * Copyright (c) 2001 Fabrice Bellard.
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
36 * First version by Francois Revol revol@free.fr
37 * Seek function by Gael Chardon gael.dev@4now.net
39 * Features and limitations:
40 * - reads most of the QT files I have (at least the structure),
41 * Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html
42 * - the code is quite ugly... maybe I won't do it recursive next time :-)
44 * Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/
45 * when coding this :) (it's a writer anyway)
47 * Reference documents:
48 * http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
50 * http://developer.apple.com/documentation/QuickTime/QTFF/
51 * http://developer.apple.com/documentation/QuickTime/QTFF/qtff.pdf
52 * QuickTime is a trademark of Apple (AFAIK :))
55 #include "qtpalette.h"
61 /* the QuickTime file format is quite convoluted...
62 * it has lots of index tables, each indexing something in another one...
63 * Here we just use what is needed to read the chunks
75 int64_t size; /* total size (excluding the size and type fields) */
83 struct MOVParseTableEntry;
85 typedef struct MOVStreamContext {
86 int ffindex; /* the ffmpeg stream id */
88 unsigned int chunk_count;
89 int64_t *chunk_offsets;
90 unsigned int stts_count;
91 MOV_stts_t *stts_data;
92 unsigned int ctts_count;
93 MOV_stts_t *ctts_data;
94 unsigned int edit_count; /* number of 'edit' (elst atom) */
95 unsigned int sample_to_chunk_sz;
96 MOV_stsc_t *sample_to_chunk;
97 int sample_to_ctime_index;
98 int sample_to_ctime_sample;
99 unsigned int sample_size;
100 unsigned int sample_count;
102 unsigned int keyframe_count;
107 unsigned int bytes_per_frame;
108 unsigned int samples_per_frame;
109 int dv_audio_container;
112 typedef struct MOVContext {
115 int64_t duration; /* duration of the longest track */
116 int found_moov; /* when both 'moov' and 'mdat' sections has been found */
117 int found_mdat; /* we suppose we have enough data to read the file */
118 AVPaletteControl palette_control;
119 MOV_mdat_t *mdat_list;
121 DVDemuxContext *dv_demux;
122 AVFormatContext *dv_fctx;
123 int isom; /* 1 if file is ISO Media (mp4/3gp) */
127 /* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
129 /* those functions parse an atom */
131 1: found what I wanted, exit
132 0: continue to parse next atom
133 -1: error occured, exit
135 /* links atom IDs to parse functions */
136 typedef struct MOVParseTableEntry {
138 int (*parse)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
139 } MOVParseTableEntry;
141 static const MOVParseTableEntry mov_default_parse_table[];
143 static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
145 int64_t total_size = 0;
150 a.offset = atom.offset;
153 atom.size = INT64_MAX;
154 while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
158 a.size = get_be32(pb);
159 a.type = get_le32(pb);
163 dprintf(c->fc, "type: %08x %.4s sz: %"PRIx64" %"PRIx64" %"PRIx64"\n", a.type, (char*)&a.type, a.size, atom.size, total_size);
164 if (a.size == 1) { /* 64 bit extended size */
165 a.size = get_be64(pb) - 8;
170 a.size = atom.size - total_size;
177 a.size = FFMIN(a.size, atom.size - total_size);
179 for (i = 0; mov_default_parse_table[i].type != 0L
180 && mov_default_parse_table[i].type != a.type; i++)
183 if (mov_default_parse_table[i].type == 0) { /* skip leaf atoms data */
184 url_fskip(pb, a.size);
186 offset_t start_pos = url_ftell(pb);
188 err = mov_default_parse_table[i].parse(c, pb, a);
189 if (c->found_moov && c->found_mdat)
191 left = a.size - url_ftell(pb) + start_pos;
192 if (left > 0) /* skip garbage at atom end */
197 total_size += a.size;
200 if (!err && total_size < atom.size && atom.size < 0x7ffff) {
201 url_fskip(pb, atom.size - total_size);
207 static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
209 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
213 get_byte(pb); /* version */
214 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
217 ctype = get_le32(pb);
218 type = get_le32(pb); /* component subtype */
220 dprintf(c->fc, "ctype= %c%c%c%c (0x%08x)\n", *((char *)&ctype), ((char *)&ctype)[1], ((char *)&ctype)[2], ((char *)&ctype)[3], (int) ctype);
221 dprintf(c->fc, "stype= %c%c%c%c\n", *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
224 if(type == MKTAG('v', 'i', 'd', 'e'))
225 st->codec->codec_type = CODEC_TYPE_VIDEO;
226 else if(type == MKTAG('s', 'o', 'u', 'n'))
227 st->codec->codec_type = CODEC_TYPE_AUDIO;
228 else if(type == MKTAG('m', '1', 'a', ' '))
229 st->codec->codec_id = CODEC_ID_MP2;
230 else if(type == MKTAG('s', 'u', 'b', 'p')) {
231 st->codec->codec_type = CODEC_TYPE_SUBTITLE;
232 st->codec->codec_id = CODEC_ID_DVD_SUBTITLE;
234 get_be32(pb); /* component manufacture */
235 get_be32(pb); /* component flags */
236 get_be32(pb); /* component flags mask */
239 return 0; /* nothing left to read */
241 url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset));
245 static int mp4_read_descr_len(ByteIOContext *pb)
250 int c = get_byte(pb);
251 len = (len << 7) | (c & 0x7f);
258 static int mp4_read_descr(MOVContext *c, ByteIOContext *pb, int *tag)
262 len = mp4_read_descr_len(pb);
263 dprintf(c->fc, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
267 #define MP4ESDescrTag 0x03
268 #define MP4DecConfigDescrTag 0x04
269 #define MP4DecSpecificDescrTag 0x05
271 static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
273 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
276 get_be32(pb); /* version + flags */
277 len = mp4_read_descr(c, pb, &tag);
278 if (tag == MP4ESDescrTag) {
279 get_be16(pb); /* ID */
280 get_byte(pb); /* priority */
282 get_be16(pb); /* ID */
284 len = mp4_read_descr(c, pb, &tag);
285 if (tag == MP4DecConfigDescrTag) {
286 int object_type_id = get_byte(pb);
287 get_byte(pb); /* stream type */
288 get_be24(pb); /* buffer size db */
289 get_be32(pb); /* max bitrate */
290 get_be32(pb); /* avg bitrate */
292 st->codec->codec_id= codec_get_id(ff_mp4_obj_type, object_type_id);
293 dprintf(c->fc, "esds object type id %d\n", object_type_id);
294 len = mp4_read_descr(c, pb, &tag);
295 if (tag == MP4DecSpecificDescrTag) {
296 dprintf(c->fc, "Specific MPEG4 header len=%d\n", len);
297 st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
298 if (st->codec->extradata) {
299 get_buffer(pb, st->codec->extradata, len);
300 st->codec->extradata_size = len;
302 if ((*st->codec->extradata >> 3) == 29) {
303 st->codec->codec_id = CODEC_ID_MP3ON4;
311 /* this atom contains actual media data */
312 static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
314 if(atom.size == 0) /* wrong one (MP4) */
316 c->mdat_list = av_realloc(c->mdat_list, (c->mdat_count + 1) * sizeof(*c->mdat_list));
317 c->mdat_list[c->mdat_count].offset = atom.offset;
318 c->mdat_list[c->mdat_count].size = atom.size;
322 return 1; /* found both, just go */
323 url_fskip(pb, atom.size);
324 return 0; /* now go for moov */
327 static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
329 uint32_t type = get_le32(pb);
331 if (type != MKTAG('q','t',' ',' '))
333 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
334 get_be32(pb); /* minor version */
335 url_fskip(pb, atom.size - 8);
339 /* this atom should contain all header atoms */
340 static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
342 if (mov_read_default(c, pb, atom) < 0)
344 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
345 /* so we don't parse the whole file if over a network */
348 return 1; /* found both, just go */
349 return 0; /* now go for mdat */
353 static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
355 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
356 MOVStreamContext *sc = st->priv_data;
357 int version = get_byte(pb);
361 return 1; /* unsupported */
363 get_byte(pb); get_byte(pb);
364 get_byte(pb); /* flags */
370 get_be32(pb); /* creation time */
371 get_be32(pb); /* modification time */
374 sc->time_scale = get_be32(pb);
375 st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
377 lang = get_be16(pb); /* language */
378 ff_mov_lang_to_iso639(lang, st->language);
379 get_be16(pb); /* quality */
384 static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
386 int version = get_byte(pb); /* version */
387 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
393 get_be32(pb); /* creation time */
394 get_be32(pb); /* modification time */
396 c->time_scale = get_be32(pb); /* time scale */
398 dprintf(c->fc, "time scale = %i\n", c->time_scale);
400 c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
401 get_be32(pb); /* preferred scale */
403 get_be16(pb); /* preferred volume */
405 url_fskip(pb, 10); /* reserved */
407 url_fskip(pb, 36); /* display matrix */
409 get_be32(pb); /* preview time */
410 get_be32(pb); /* preview duration */
411 get_be32(pb); /* poster time */
412 get_be32(pb); /* selection time */
413 get_be32(pb); /* selection duration */
414 get_be32(pb); /* current time */
415 get_be32(pb); /* next track ID */
420 static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
422 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
424 if((uint64_t)atom.size > (1<<30))
427 // currently SVQ3 decoder expect full STSD header - so let's fake it
428 // this should be fixed and just SMI header should be passed
429 av_free(st->codec->extradata);
430 st->codec->extradata_size = 0x5a + atom.size;
431 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
433 if (st->codec->extradata) {
434 memcpy(st->codec->extradata, "SVQ3", 4); // fake
435 get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
436 dprintf(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
438 url_fskip(pb, atom.size);
443 static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
445 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
446 int little_endian = get_be16(pb);
449 switch (st->codec->codec_id) {
450 case CODEC_ID_PCM_S24BE:
451 st->codec->codec_id = CODEC_ID_PCM_S24LE;
453 case CODEC_ID_PCM_S32BE:
454 st->codec->codec_id = CODEC_ID_PCM_S32LE;
463 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
464 static int mov_read_extradata(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
466 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
467 uint64_t size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
469 if(size > INT_MAX || (uint64_t)atom.size > INT_MAX)
471 buf= av_realloc(st->codec->extradata, size);
474 st->codec->extradata= buf;
475 buf+= st->codec->extradata_size;
476 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
477 AV_WB32( buf , atom.size + 8);
478 AV_WL32( buf + 4, atom.type);
479 get_buffer(pb, buf + 8, atom.size);
483 static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
485 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
487 if((uint64_t)atom.size > (1<<30))
490 if (st->codec->codec_id == CODEC_ID_QDM2) {
491 // pass all frma atom to codec, needed at least for QDM2
492 av_free(st->codec->extradata);
493 st->codec->extradata_size = atom.size;
494 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
496 if (st->codec->extradata) {
497 get_buffer(pb, st->codec->extradata, atom.size);
499 url_fskip(pb, atom.size);
500 } else if (atom.size > 8) { /* to read frma, esds atoms */
501 if (mov_read_default(c, pb, atom) < 0)
504 url_fskip(pb, atom.size);
508 static int mov_read_avcC(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
510 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
512 if((uint64_t)atom.size > (1<<30))
515 av_free(st->codec->extradata);
517 st->codec->extradata_size = atom.size;
518 st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
520 if (st->codec->extradata) {
521 get_buffer(pb, st->codec->extradata, atom.size);
523 url_fskip(pb, atom.size);
528 static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
530 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
531 MOVStreamContext *sc = st->priv_data;
532 unsigned int i, entries;
534 get_byte(pb); /* version */
535 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
537 entries = get_be32(pb);
539 if(entries >= UINT_MAX/sizeof(int64_t))
542 sc->chunk_count = entries;
543 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
544 if (!sc->chunk_offsets)
546 if (atom.type == MKTAG('s', 't', 'c', 'o')) {
547 for(i=0; i<entries; i++) {
548 sc->chunk_offsets[i] = get_be32(pb);
550 } else if (atom.type == MKTAG('c', 'o', '6', '4')) {
551 for(i=0; i<entries; i++) {
552 sc->chunk_offsets[i] = get_be64(pb);
560 static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
562 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
563 MOVStreamContext *sc = st->priv_data;
564 int entries, frames_per_sample;
566 uint8_t codec_name[32];
568 /* for palette traversal */
569 unsigned int color_depth;
570 unsigned int color_start;
571 unsigned int color_count;
572 unsigned int color_end;
576 const uint8_t *color_table;
578 unsigned char r, g, b;
580 get_byte(pb); /* version */
581 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
583 entries = get_be32(pb);
585 while(entries--) { //Parsing Sample description table
587 MOV_atom_t a = { 0, 0, 0 };
588 offset_t start_pos = url_ftell(pb);
589 int size = get_be32(pb); /* size */
590 format = get_le32(pb); /* data format */
592 get_be32(pb); /* reserved */
593 get_be16(pb); /* reserved */
594 get_be16(pb); /* index */
596 if (st->codec->codec_tag) {
597 /* multiple fourcc, just skip for now */
598 url_fskip(pb, size - (url_ftell(pb) - start_pos));
602 st->codec->codec_tag = format;
603 id = codec_get_id(codec_movaudio_tags, format);
604 if (id<=0 && (format&0xFFFF) == 'm' + ('s'<<8))
605 id = codec_get_id(codec_wav_tags, bswap_32(format)&0xFFFF);
607 if (st->codec->codec_type != CODEC_TYPE_VIDEO && id > 0) {
608 st->codec->codec_type = CODEC_TYPE_AUDIO;
609 } else if (st->codec->codec_type != CODEC_TYPE_AUDIO && /* do not overwrite codec type */
610 format && format != MKTAG('m', 'p', '4', 's')) { /* skip old asf mpeg4 tag */
611 id = codec_get_id(codec_movvideo_tags, format);
613 id = codec_get_id(codec_bmp_tags, format);
615 st->codec->codec_type = CODEC_TYPE_VIDEO;
618 dprintf(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n",
620 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff, (format >> 24) & 0xff,
621 st->codec->codec_type);
623 if(st->codec->codec_type==CODEC_TYPE_VIDEO) {
624 st->codec->codec_id = id;
625 get_be16(pb); /* version */
626 get_be16(pb); /* revision level */
627 get_be32(pb); /* vendor */
628 get_be32(pb); /* temporal quality */
629 get_be32(pb); /* spatial quality */
631 st->codec->width = get_be16(pb); /* width */
632 st->codec->height = get_be16(pb); /* height */
634 get_be32(pb); /* horiz resolution */
635 get_be32(pb); /* vert resolution */
636 get_be32(pb); /* data size, always 0 */
637 frames_per_sample = get_be16(pb); /* frames per samples */
639 dprintf(c->fc, "frames/samples = %d\n", frames_per_sample);
641 get_buffer(pb, codec_name, 32); /* codec name, pascal string (FIXME: true for mp4?) */
642 if (codec_name[0] <= 31) {
643 memcpy(st->codec->codec_name, &codec_name[1],codec_name[0]);
644 st->codec->codec_name[codec_name[0]] = 0;
647 st->codec->bits_per_sample = get_be16(pb); /* depth */
648 st->codec->color_table_id = get_be16(pb); /* colortable id */
650 /* figure out the palette situation */
651 color_depth = st->codec->bits_per_sample & 0x1F;
652 color_greyscale = st->codec->bits_per_sample & 0x20;
654 /* if the depth is 2, 4, or 8 bpp, file is palettized */
655 if ((color_depth == 2) || (color_depth == 4) ||
656 (color_depth == 8)) {
657 if (color_greyscale) {
658 /* compute the greyscale palette */
659 color_count = 1 << color_depth;
661 color_dec = 256 / (color_count - 1);
662 for (j = 0; j < color_count; j++) {
663 r = g = b = color_index;
664 c->palette_control.palette[j] =
665 (r << 16) | (g << 8) | (b);
666 color_index -= color_dec;
670 } else if (st->codec->color_table_id & 0x08) {
671 /* if flag bit 3 is set, use the default palette */
672 color_count = 1 << color_depth;
673 if (color_depth == 2)
674 color_table = ff_qt_default_palette_4;
675 else if (color_depth == 4)
676 color_table = ff_qt_default_palette_16;
678 color_table = ff_qt_default_palette_256;
680 for (j = 0; j < color_count; j++) {
681 r = color_table[j * 4 + 0];
682 g = color_table[j * 4 + 1];
683 b = color_table[j * 4 + 2];
684 c->palette_control.palette[j] =
685 (r << 16) | (g << 8) | (b);
688 /* load the palette from the file */
689 color_start = get_be32(pb);
690 color_count = get_be16(pb);
691 color_end = get_be16(pb);
692 if ((color_start <= 255) &&
693 (color_end <= 255)) {
694 for (j = color_start; j <= color_end; j++) {
695 /* each R, G, or B component is 16 bits;
696 * only use the top 8 bits; skip alpha bytes
706 c->palette_control.palette[j] =
707 (r << 16) | (g << 8) | (b);
711 st->codec->palctrl = &c->palette_control;
712 st->codec->palctrl->palette_changed = 1;
714 st->codec->palctrl = NULL;
715 } else if(st->codec->codec_type==CODEC_TYPE_AUDIO) {
717 uint16_t version = get_be16(pb);
719 st->codec->codec_id = id;
720 get_be16(pb); /* revision level */
721 get_be32(pb); /* vendor */
723 st->codec->channels = get_be16(pb); /* channel count */
724 dprintf(c->fc, "audio channels %d\n", st->codec->channels);
725 st->codec->bits_per_sample = get_be16(pb); /* sample size */
726 /* do we need to force to 16 for AMR ? */
728 /* handle specific s8 codec */
729 get_be16(pb); /* compression id = 0*/
730 get_be16(pb); /* packet size = 0 */
732 st->codec->sample_rate = ((get_be32(pb) >> 16));
734 switch (st->codec->codec_id) {
735 case CODEC_ID_PCM_S8:
736 case CODEC_ID_PCM_U8:
737 if (st->codec->bits_per_sample == 16)
738 st->codec->codec_id = CODEC_ID_PCM_S16BE;
740 case CODEC_ID_PCM_S16LE:
741 case CODEC_ID_PCM_S16BE:
742 if (st->codec->bits_per_sample == 8)
743 st->codec->codec_id = CODEC_ID_PCM_S8;
744 else if (st->codec->bits_per_sample == 24)
745 st->codec->codec_id = CODEC_ID_PCM_S24BE;
751 //Read QT version 1 fields. In version 0 these do not exist.
752 dprintf(c->fc, "version =%d, isom =%d\n",version,c->isom);
755 sc->samples_per_frame = get_be32(pb);
756 get_be32(pb); /* bytes per packet */
757 sc->bytes_per_frame = get_be32(pb);
758 get_be32(pb); /* bytes per sample */
759 } else if(version==2) {
760 get_be32(pb); /* sizeof struct only */
761 st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
762 st->codec->channels = get_be32(pb);
763 get_be32(pb); /* always 0x7F000000 */
764 get_be32(pb); /* bits per channel if sound is uncompressed */
765 get_be32(pb); /* lcpm format specific flag */
766 get_be32(pb); /* bytes per audio packet if constant */
767 get_be32(pb); /* lpcm frames per audio packet if constant */
771 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
772 if (bits_per_sample) {
773 st->codec->bits_per_sample = bits_per_sample;
774 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
777 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
778 url_fskip(pb, size - (url_ftell(pb) - start_pos));
780 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
781 a.size = size - (url_ftell(pb) - start_pos);
783 if (mov_read_default(c, pb, a) < 0)
785 } else if (a.size > 0)
786 url_fskip(pb, a.size);
789 if(st->codec->codec_type==CODEC_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1) {
790 st->codec->sample_rate= sc->time_scale;
793 /* special codec parameters handling */
794 switch (st->codec->codec_id) {
795 #ifdef CONFIG_H261_DECODER
798 #ifdef CONFIG_H263_DECODER
801 #ifdef CONFIG_MPEG4_DECODER
804 st->codec->width= 0; /* let decoder init width/height */
805 st->codec->height= 0;
807 #ifdef CONFIG_LIBFAAD
810 #ifdef CONFIG_VORBIS_DECODER
811 case CODEC_ID_VORBIS:
813 case CODEC_ID_MP3ON4:
814 st->codec->sample_rate= 0; /* let decoder init parameters properly */
816 #ifdef CONFIG_DV_DEMUXER
817 case CODEC_ID_DVAUDIO:
818 c->dv_fctx = av_alloc_format_context();
819 c->dv_demux = dv_init_demux(c->dv_fctx);
821 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
824 sc->dv_audio_container = 1;
825 st->codec->codec_id = CODEC_ID_PCM_S16LE;
828 /* no ifdef since parameters are always those */
829 case CODEC_ID_AMR_WB:
830 st->codec->sample_rate= 16000;
831 st->codec->channels= 1; /* really needed */
833 case CODEC_ID_AMR_NB:
834 st->codec->sample_rate= 8000;
835 st->codec->channels= 1; /* really needed */
839 st->codec->codec_type = CODEC_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
840 st->need_parsing = AVSTREAM_PARSE_FULL;
842 case CODEC_ID_ADPCM_MS:
843 case CODEC_ID_ADPCM_IMA_WAV:
844 st->codec->block_align = sc->bytes_per_frame;
853 static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
855 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
856 MOVStreamContext *sc = st->priv_data;
857 unsigned int i, entries;
859 get_byte(pb); /* version */
860 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
862 entries = get_be32(pb);
864 if(entries >= UINT_MAX / sizeof(MOV_stsc_t))
867 dprintf(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
869 sc->sample_to_chunk_sz = entries;
870 sc->sample_to_chunk = av_malloc(entries * sizeof(MOV_stsc_t));
871 if (!sc->sample_to_chunk)
873 for(i=0; i<entries; i++) {
874 sc->sample_to_chunk[i].first = get_be32(pb);
875 sc->sample_to_chunk[i].count = get_be32(pb);
876 sc->sample_to_chunk[i].id = get_be32(pb);
881 static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
883 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
884 MOVStreamContext *sc = st->priv_data;
885 unsigned int i, entries;
887 get_byte(pb); /* version */
888 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
890 entries = get_be32(pb);
892 if(entries >= UINT_MAX / sizeof(int))
895 sc->keyframe_count = entries;
897 dprintf(c->fc, "keyframe_count = %d\n", sc->keyframe_count);
899 sc->keyframes = av_malloc(entries * sizeof(int));
902 for(i=0; i<entries; i++) {
903 sc->keyframes[i] = get_be32(pb);
904 //dprintf(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
909 static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
911 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
912 MOVStreamContext *sc = st->priv_data;
913 unsigned int i, entries, sample_size;
915 get_byte(pb); /* version */
916 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
918 sample_size = get_be32(pb);
919 if (!sc->sample_size) /* do not overwrite value computed in stsd */
920 sc->sample_size = sample_size;
921 entries = get_be32(pb);
922 if(entries >= UINT_MAX / sizeof(int))
925 sc->sample_count = entries;
929 dprintf(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, sc->sample_count);
931 sc->sample_sizes = av_malloc(entries * sizeof(int));
932 if (!sc->sample_sizes)
934 for(i=0; i<entries; i++) {
935 sc->sample_sizes[i] = get_be32(pb);
936 dprintf(c->fc, "sample_sizes[]=%d\n", sc->sample_sizes[i]);
941 static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
943 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
944 MOVStreamContext *sc = st->priv_data;
945 unsigned int i, entries;
947 int64_t total_sample_count=0;
949 get_byte(pb); /* version */
950 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
951 entries = get_be32(pb);
952 if(entries >= UINT_MAX / sizeof(MOV_stts_t))
955 sc->stts_count = entries;
956 sc->stts_data = av_malloc(entries * sizeof(MOV_stts_t));
959 dprintf(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
963 for(i=0; i<entries; i++) {
967 sample_count=get_be32(pb);
968 sample_duration = get_be32(pb);
969 sc->stts_data[i].count= sample_count;
970 sc->stts_data[i].duration= sample_duration;
972 sc->time_rate= ff_gcd(sc->time_rate, sample_duration);
974 dprintf(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
976 duration+=(int64_t)sample_duration*sample_count;
977 total_sample_count+=sample_count;
980 st->nb_frames= total_sample_count;
982 st->duration= duration;
986 static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
988 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
989 MOVStreamContext *sc = st->priv_data;
990 unsigned int i, entries;
992 get_byte(pb); /* version */
993 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
994 entries = get_be32(pb);
995 if(entries >= UINT_MAX / sizeof(MOV_stts_t))
998 sc->ctts_count = entries;
999 sc->ctts_data = av_malloc(entries * sizeof(MOV_stts_t));
1002 dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1004 for(i=0; i<entries; i++) {
1005 int count =get_be32(pb);
1006 int duration =get_be32(pb);
1009 av_log(c->fc, AV_LOG_ERROR, "negative ctts, ignoring\n");
1011 url_fskip(pb, 8 * (entries - i - 1));
1014 sc->ctts_data[i].count = count;
1015 sc->ctts_data[i].duration= duration;
1017 sc->time_rate= ff_gcd(sc->time_rate, duration);
1022 static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1025 MOVStreamContext *sc;
1027 st = av_new_stream(c->fc, c->fc->nb_streams);
1029 sc = av_mallocz(sizeof(MOVStreamContext));
1036 st->codec->codec_type = CODEC_TYPE_DATA;
1037 st->start_time = 0; /* XXX: check */
1039 return mov_read_default(c, pb, atom);
1042 static void mov_parse_udta_string(ByteIOContext *pb, char *str, int size)
1044 uint16_t str_size = get_be16(pb); /* string length */;
1046 get_be16(pb); /* skip language */
1047 get_buffer(pb, str, FFMIN(size, str_size));
1050 static int mov_read_udta(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1052 uint64_t end = url_ftell(pb) + atom.size;
1054 while (url_ftell(pb) + 8 < end) {
1055 uint32_t tag_size = get_be32(pb);
1056 uint32_t tag = get_le32(pb);
1057 uint64_t next = url_ftell(pb) + tag_size - 8;
1059 if (next > end) // stop if tag_size is wrong
1063 case MKTAG(0xa9,'n','a','m'):
1064 mov_parse_udta_string(pb, c->fc->title, sizeof(c->fc->title));
1066 case MKTAG(0xa9,'w','r','t'):
1067 mov_parse_udta_string(pb, c->fc->author, sizeof(c->fc->author));
1069 case MKTAG(0xa9,'c','p','y'):
1070 mov_parse_udta_string(pb, c->fc->copyright, sizeof(c->fc->copyright));
1072 case MKTAG(0xa9,'i','n','f'):
1073 mov_parse_udta_string(pb, c->fc->comment, sizeof(c->fc->comment));
1079 url_fseek(pb, next, SEEK_SET);
1085 static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1087 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1088 int version = get_byte(pb);
1090 get_byte(pb); get_byte(pb);
1091 get_byte(pb); /* flags */
1093 MOV_TRACK_ENABLED 0x0001
1094 MOV_TRACK_IN_MOVIE 0x0002
1095 MOV_TRACK_IN_PREVIEW 0x0004
1096 MOV_TRACK_IN_POSTER 0x0008
1103 get_be32(pb); /* creation time */
1104 get_be32(pb); /* modification time */
1106 st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1107 get_be32(pb); /* reserved */
1108 st->start_time = 0; /* check */
1109 (version == 1) ? get_be64(pb) : get_be32(pb); /* highlevel (considering edits) duration in movie timebase */
1110 get_be32(pb); /* reserved */
1111 get_be32(pb); /* reserved */
1113 get_be16(pb); /* layer */
1114 get_be16(pb); /* alternate group */
1115 get_be16(pb); /* volume */
1116 get_be16(pb); /* reserved */
1118 url_fskip(pb, 36); /* display matrix */
1120 /* those are fixed-point */
1121 get_be32(pb); /* track width */
1122 get_be32(pb); /* track height */
1127 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1128 /* like the files created with Adobe Premiere 5.0, for samples see */
1129 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1130 static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1135 return 0; /* continue */
1136 if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1137 url_fskip(pb, atom.size - 4);
1140 atom.type = get_le32(pb);
1143 if (atom.type != MKTAG('m', 'd', 'a', 't')) {
1144 url_fskip(pb, atom.size);
1147 err = mov_read_mdat(c, pb, atom);
1151 static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1156 uint8_t *moov_data; /* uncompressed data */
1157 long cmov_len, moov_len;
1160 get_be32(pb); /* dcom atom */
1161 if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1163 if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
1164 av_log(NULL, AV_LOG_ERROR, "unknown compression for cmov atom !");
1167 get_be32(pb); /* cmvd atom */
1168 if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1170 moov_len = get_be32(pb); /* uncompressed size */
1171 cmov_len = atom.size - 6 * 4;
1173 cmov_data = av_malloc(cmov_len);
1176 moov_data = av_malloc(moov_len);
1181 get_buffer(pb, cmov_data, cmov_len);
1182 if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1184 if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
1186 atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1188 atom.size = moov_len;
1190 // { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1192 ret = mov_read_default(c, &ctx, atom);
1197 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
1202 /* edit list atom */
1203 static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1205 MOVStreamContext *sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
1208 get_byte(pb); /* version */
1209 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1210 edit_count= sc->edit_count = get_be32(pb); /* entries */
1212 for(i=0; i<edit_count; i++){
1213 get_be32(pb); /* Track duration */
1214 get_be32(pb); /* Media time */
1215 get_be32(pb); /* Media rate */
1217 dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, sc->edit_count);
1221 static const MOVParseTableEntry mov_default_parse_table[] = {
1223 { MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1224 { MKTAG( 'c', 't', 't', 's' ), mov_read_ctts }, /* composition time to sample */
1225 { MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
1226 { MKTAG( 'e', 'l', 's', 't' ), mov_read_elst },
1227 { MKTAG( 'e', 'n', 'd', 'a' ), mov_read_enda },
1228 { MKTAG( 'f', 'i', 'e', 'l' ), mov_read_extradata },
1229 { MKTAG( 'f', 't', 'y', 'p' ), mov_read_ftyp },
1230 { MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1231 { MKTAG( 'j', 'p', '2', 'h' ), mov_read_extradata },
1232 { MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1233 { MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1234 { MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1235 { MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1236 { MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1237 { MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1238 { MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorenson extension ??? */
1239 { MKTAG( 'a', 'l', 'a', 'c' ), mov_read_extradata }, /* alac specific atom */
1240 { MKTAG( 'a', 'v', 'c', 'C' ), mov_read_avcC },
1241 { MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1242 { MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1243 { MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1244 { MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1245 { MKTAG( 's', 't', 's', 's' ), mov_read_stss }, /* sync sample */
1246 { MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1247 { MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1248 { MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1249 { MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1250 { MKTAG( 'u', 'd', 't', 'a' ), mov_read_udta },
1251 { MKTAG( 'w', 'a', 'v', 'e' ), mov_read_wave },
1252 { MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1253 { MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1254 { MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
1258 /* XXX: is it sufficient ? */
1259 static int mov_probe(AVProbeData *p)
1261 unsigned int offset;
1265 /* check file header */
1268 /* ignore invalid offset */
1269 if ((offset + 8) > (unsigned int)p->buf_size)
1271 tag = AV_RL32(p->buf + offset + 4);
1273 /* check for obvious tags */
1274 case MKTAG( 'j', 'P', ' ', ' ' ): /* jpeg 2000 signature */
1275 case MKTAG( 'm', 'o', 'o', 'v' ):
1276 case MKTAG( 'm', 'd', 'a', 't' ):
1277 case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
1278 case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
1279 return AVPROBE_SCORE_MAX;
1280 /* those are more common words, so rate then a bit less */
1281 case MKTAG( 'e', 'd', 'i', 'w' ): /* xdcam files have reverted first tags */
1282 case MKTAG( 'w', 'i', 'd', 'e' ):
1283 case MKTAG( 'f', 'r', 'e', 'e' ):
1284 case MKTAG( 'j', 'u', 'n', 'k' ):
1285 case MKTAG( 'p', 'i', 'c', 't' ):
1286 return AVPROBE_SCORE_MAX - 5;
1287 case MKTAG( 'f', 't', 'y', 'p' ):
1288 case MKTAG( 's', 'k', 'i', 'p' ):
1289 case MKTAG( 'u', 'u', 'i', 'd' ):
1290 offset = AV_RB32(p->buf+offset) + offset;
1291 /* if we only find those cause probedata is too small at least rate them */
1292 score = AVPROBE_SCORE_MAX - 50;
1295 /* unrecognized tag */
1302 static void mov_build_index(MOVContext *mov, AVStream *st)
1304 MOVStreamContext *sc = st->priv_data;
1305 offset_t current_offset;
1306 int64_t current_dts = 0;
1307 unsigned int stts_index = 0;
1308 unsigned int stsc_index = 0;
1309 unsigned int stss_index = 0;
1310 unsigned int i, j, k;
1312 if (sc->sample_sizes || st->codec->codec_type == CODEC_TYPE_VIDEO || sc->dv_audio_container) {
1313 unsigned int current_sample = 0;
1314 unsigned int stts_sample = 0;
1315 unsigned int keyframe, sample_size;
1316 unsigned int distance = 0;
1318 st->nb_frames = sc->sample_count;
1319 for (i = 0; i < sc->chunk_count; i++) {
1320 current_offset = sc->chunk_offsets[i];
1321 if (stsc_index + 1 < sc->sample_to_chunk_sz && i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1323 for (j = 0; j < sc->sample_to_chunk[stsc_index].count; j++) {
1324 if (current_sample >= sc->sample_count) {
1325 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1328 keyframe = !sc->keyframe_count || current_sample + 1 == sc->keyframes[stss_index];
1331 if (stss_index + 1 < sc->keyframe_count)
1334 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1335 dprintf(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", size %d, distance %d, keyframe %d\n",
1336 st->index, current_sample, current_offset, current_dts, sample_size, distance, keyframe);
1337 av_add_index_entry(st, current_offset, current_dts, sample_size, distance, keyframe ? AVINDEX_KEYFRAME : 0);
1338 current_offset += sample_size;
1339 assert(sc->stts_data[stts_index].duration % sc->time_rate == 0);
1340 current_dts += sc->stts_data[stts_index].duration / sc->time_rate;
1344 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1350 } else { /* read whole chunk */
1351 unsigned int chunk_samples, chunk_size, chunk_duration;
1352 for (i = 0; i < sc->chunk_count; i++) {
1353 current_offset = sc->chunk_offsets[i];
1354 if (stsc_index + 1 < sc->sample_to_chunk_sz && i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1356 chunk_samples = sc->sample_to_chunk[stsc_index].count;
1357 /* get chunk size */
1358 if (sc->sample_size > 1 || st->codec->codec_id == CODEC_ID_PCM_U8 || st->codec->codec_id == CODEC_ID_PCM_S8)
1359 chunk_size = chunk_samples * sc->sample_size;
1360 else if (sc->samples_per_frame > 0 && (chunk_samples * sc->bytes_per_frame % sc->samples_per_frame == 0))
1361 chunk_size = chunk_samples * sc->bytes_per_frame / sc->samples_per_frame;
1362 else { /* workaround to find nearest next chunk offset */
1363 chunk_size = INT_MAX;
1364 for (j = 0; j < mov->fc->nb_streams; j++) {
1365 MOVStreamContext *msc = mov->fc->streams[j]->priv_data;
1366 for (k = msc->next_chunk; k < msc->chunk_count; k++) {
1367 if (msc->chunk_offsets[k] > current_offset && msc->chunk_offsets[k] - current_offset < chunk_size) {
1368 chunk_size = msc->chunk_offsets[k] - current_offset;
1369 msc->next_chunk = k;
1374 /* check for last chunk */
1375 if (chunk_size == INT_MAX)
1376 for (j = 0; j < mov->mdat_count; j++) {
1377 dprintf(mov->fc, "mdat %d, offset %"PRIx64", size %"PRId64", current offset %"PRIx64"\n",
1378 j, mov->mdat_list[j].offset, mov->mdat_list[j].size, current_offset);
1379 if (mov->mdat_list[j].offset <= current_offset && mov->mdat_list[j].offset + mov->mdat_list[j].size > current_offset)
1380 chunk_size = mov->mdat_list[j].offset + mov->mdat_list[j].size - current_offset;
1382 assert(chunk_size != INT_MAX);
1383 for (j = 0; j < mov->fc->nb_streams; j++) {
1384 MOVStreamContext *msc = mov->fc->streams[j]->priv_data;
1385 msc->next_chunk = 0;
1388 av_add_index_entry(st, current_offset, current_dts, chunk_size, 0, AVINDEX_KEYFRAME);
1389 /* get chunk duration */
1391 while (chunk_samples > 0) {
1392 if (chunk_samples < sc->stts_data[stts_index].count) {
1393 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1394 sc->stts_data[stts_index].count -= chunk_samples;
1397 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1398 chunk_samples -= sc->stts_data[stts_index].count;
1399 if (stts_index + 1 < sc->stts_count) {
1404 dprintf(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", size %d, duration %d\n",
1405 st->index, i, current_offset, current_dts, chunk_size, chunk_duration);
1406 assert(chunk_duration % sc->time_rate == 0);
1407 current_dts += chunk_duration / sc->time_rate;
1411 /* adjust sample count to avindex entries */
1412 sc->sample_count = st->nb_index_entries;
1415 static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
1417 MOVContext *mov = s->priv_data;
1418 ByteIOContext *pb = s->pb;
1420 MOV_atom_t atom = { 0, 0, 0 };
1424 if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1425 atom.size = url_fsize(pb);
1427 atom.size = INT64_MAX;
1429 /* check MOV header */
1430 err = mov_read_default(mov, pb, atom);
1431 if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
1432 av_log(s, AV_LOG_ERROR, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%"PRId64"\n",
1433 err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1436 dprintf(mov->fc, "on_parse_exit_offset=%d\n", (int) url_ftell(pb));
1438 for(i=0; i<s->nb_streams; i++) {
1439 AVStream *st = s->streams[i];
1440 MOVStreamContext *sc = st->priv_data;
1442 if(!sc->stts_count || !sc->chunk_count || !sc->sample_to_chunk_sz ||
1443 (!sc->sample_size && !sc->sample_count)){
1444 av_log(s, AV_LOG_ERROR, "missing mandatory atoms, broken header\n");
1445 sc->sample_count = 0; //ignore track
1451 sc->time_scale= mov->time_scale;
1452 av_set_pts_info(st, 64, sc->time_rate, sc->time_scale);
1454 if (st->codec->codec_type == CODEC_TYPE_AUDIO && sc->stts_count == 1)
1455 st->codec->frame_size = sc->stts_data[0].duration;
1457 if(st->duration != AV_NOPTS_VALUE){
1458 assert(st->duration % sc->time_rate == 0);
1459 st->duration /= sc->time_rate;
1462 mov_build_index(mov, st);
1465 for(i=0; i<s->nb_streams; i++) {
1466 MOVStreamContext *sc = s->streams[i]->priv_data;
1467 /* Do not need those anymore. */
1468 av_freep(&sc->chunk_offsets);
1469 av_freep(&sc->sample_to_chunk);
1470 av_freep(&sc->sample_sizes);
1471 av_freep(&sc->keyframes);
1472 av_freep(&sc->stts_data);
1474 av_freep(&mov->mdat_list);
1478 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
1480 MOVContext *mov = s->priv_data;
1481 MOVStreamContext *sc = 0;
1482 AVIndexEntry *sample = 0;
1483 int64_t best_dts = INT64_MAX;
1486 for (i = 0; i < s->nb_streams; i++) {
1487 AVStream *st = s->streams[i];
1488 MOVStreamContext *msc = st->priv_data;
1489 if (st->discard != AVDISCARD_ALL && msc->current_sample < msc->sample_count) {
1490 AVIndexEntry *current_sample = &st->index_entries[msc->current_sample];
1491 int64_t dts = av_rescale(current_sample->timestamp * (int64_t)msc->time_rate, AV_TIME_BASE, msc->time_scale);
1492 dprintf(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
1493 if (!sample || (url_is_streamed(s->pb) && current_sample->pos < sample->pos) ||
1494 (!url_is_streamed(s->pb) &&
1495 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
1496 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))) {
1497 sample = current_sample;
1505 /* must be done just before reading, to avoid infinite loop on sample */
1506 sc->current_sample++;
1507 if (url_fseek(s->pb, sample->pos, SEEK_SET) != sample->pos) {
1508 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n", sc->ffindex, sample->pos);
1511 #ifdef CONFIG_DV_DEMUXER
1512 if (sc->dv_audio_container) {
1513 dv_get_packet(mov->dv_demux, pkt);
1514 dprintf(s, "dv audio pkt size %d\n", pkt->size);
1517 av_get_packet(s->pb, pkt, sample->size);
1518 #ifdef CONFIG_DV_DEMUXER
1519 if (mov->dv_demux) {
1520 void *pkt_destruct_func = pkt->destruct;
1521 dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
1522 pkt->destruct = pkt_destruct_func;
1526 pkt->stream_index = sc->ffindex;
1527 pkt->dts = sample->timestamp;
1528 if (sc->ctts_data) {
1529 assert(sc->ctts_data[sc->sample_to_ctime_index].duration % sc->time_rate == 0);
1530 pkt->pts = pkt->dts + sc->ctts_data[sc->sample_to_ctime_index].duration / sc->time_rate;
1531 /* update ctts context */
1532 sc->sample_to_ctime_sample++;
1533 if (sc->sample_to_ctime_index < sc->ctts_count && sc->ctts_data[sc->sample_to_ctime_index].count == sc->sample_to_ctime_sample) {
1534 sc->sample_to_ctime_index++;
1535 sc->sample_to_ctime_sample = 0;
1538 pkt->pts = pkt->dts;
1540 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? PKT_FLAG_KEY : 0;
1541 pkt->pos = sample->pos;
1542 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);
1546 static int mov_seek_stream(AVStream *st, int64_t timestamp, int flags)
1548 MOVStreamContext *sc = st->priv_data;
1549 int sample, time_sample;
1552 sample = av_index_search_timestamp(st, timestamp, flags);
1553 dprintf(st->codec, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
1554 if (sample < 0) /* not sure what to do */
1556 sc->current_sample = sample;
1557 dprintf(st->codec, "stream %d, found sample %d\n", st->index, sc->current_sample);
1558 /* adjust ctts index */
1559 if (sc->ctts_data) {
1561 for (i = 0; i < sc->ctts_count; i++) {
1562 int next = time_sample + sc->ctts_data[i].count;
1563 if (next > sc->current_sample) {
1564 sc->sample_to_ctime_index = i;
1565 sc->sample_to_ctime_sample = sc->current_sample - time_sample;
1574 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
1577 int64_t seek_timestamp, timestamp;
1581 if (stream_index >= s->nb_streams)
1584 st = s->streams[stream_index];
1585 sample = mov_seek_stream(st, sample_time, flags);
1589 /* adjust seek timestamp to found sample timestamp */
1590 seek_timestamp = st->index_entries[sample].timestamp;
1592 for (i = 0; i < s->nb_streams; i++) {
1594 if (stream_index == i || st->discard == AVDISCARD_ALL)
1597 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
1598 mov_seek_stream(st, timestamp, flags);
1603 static int mov_read_close(AVFormatContext *s)
1606 MOVContext *mov = s->priv_data;
1607 for(i=0; i<s->nb_streams; i++) {
1608 MOVStreamContext *sc = s->streams[i]->priv_data;
1609 av_freep(&sc->ctts_data);
1612 for(i=0; i<mov->dv_fctx->nb_streams; i++){
1613 av_freep(&mov->dv_fctx->streams[i]->codec);
1614 av_freep(&mov->dv_fctx->streams[i]);
1616 av_freep(&mov->dv_fctx);
1617 av_freep(&mov->dv_demux);
1622 AVInputFormat mov_demuxer = {
1623 "mov,mp4,m4a,3gp,3g2,mj2",
1624 "QuickTime/MPEG4/Motion JPEG 2000 format",