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
80 int64_t size; /* total size (excluding the size and type fields) */
83 struct MOVParseTableEntry;
85 typedef struct MOVStreamContext {
87 int ffindex; /* the ffmpeg stream id */
89 unsigned int chunk_count;
90 int64_t *chunk_offsets;
91 unsigned int stts_count;
92 MOV_stts_t *stts_data;
93 unsigned int ctts_count;
94 MOV_stts_t *ctts_data;
95 unsigned int edit_count; /* number of 'edit' (elst atom) */
96 unsigned int sample_to_chunk_sz;
97 MOV_stsc_t *sample_to_chunk;
98 int sample_to_ctime_index;
99 int sample_to_ctime_sample;
100 unsigned int sample_size;
101 unsigned int sample_count;
103 unsigned int keyframe_count;
108 unsigned int bytes_per_frame;
109 unsigned int samples_per_frame;
110 int dv_audio_container;
111 int pseudo_stream_id;
112 int16_t audio_cid; ///< stsd audio compression id
113 unsigned drefs_count;
118 typedef struct MOVContext {
121 int64_t duration; /* duration of the longest track */
122 int found_moov; /* when both 'moov' and 'mdat' sections has been found */
123 int found_mdat; /* we suppose we have enough data to read the file */
124 AVPaletteControl palette_control;
125 DVDemuxContext *dv_demux;
126 AVFormatContext *dv_fctx;
127 int isom; /* 1 if file is ISO Media (mp4/3gp) */
131 /* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
133 /* those functions parse an atom */
135 1: found what I wanted, exit
136 0: continue to parse next atom
137 -1: error occured, exit
139 /* links atom IDs to parse functions */
140 typedef struct MOVParseTableEntry {
142 int (*parse)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
143 } MOVParseTableEntry;
145 static const MOVParseTableEntry mov_default_parse_table[];
147 static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
149 int64_t total_size = 0;
154 a.offset = atom.offset;
157 atom.size = INT64_MAX;
158 while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
162 a.size = get_be32(pb);
163 a.type = get_le32(pb);
167 dprintf(c->fc, "type: %08x %.4s sz: %"PRIx64" %"PRIx64" %"PRIx64"\n",
168 a.type, (char*)&a.type, a.size, atom.size, total_size);
169 if (a.size == 1) { /* 64 bit extended size */
170 a.size = get_be64(pb) - 8;
175 a.size = atom.size - total_size;
182 a.size = FFMIN(a.size, atom.size - total_size);
184 for (i = 0; mov_default_parse_table[i].type != 0
185 && mov_default_parse_table[i].type != a.type; i++)
188 if (mov_default_parse_table[i].type == 0) { /* skip leaf atoms data */
189 url_fskip(pb, a.size);
191 offset_t start_pos = url_ftell(pb);
193 err = mov_default_parse_table[i].parse(c, pb, a);
194 if (c->found_moov && c->found_mdat)
196 left = a.size - url_ftell(pb) + start_pos;
197 if (left > 0) /* skip garbage at atom end */
202 total_size += a.size;
205 if (!err && total_size < atom.size && atom.size < 0x7ffff) {
206 url_fskip(pb, atom.size - total_size);
212 static int mov_read_dref(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
214 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
215 MOVStreamContext *sc = st->priv_data;
218 get_be32(pb); // version + flags
219 entries = get_be32(pb);
220 if (entries >= UINT_MAX / sizeof(*sc->drefs))
222 sc->drefs_count = entries;
223 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
225 for (i = 0; i < sc->drefs_count; i++) {
226 MOV_dref_t *dref = &sc->drefs[i];
227 uint32_t size = get_be32(pb);
228 offset_t next = url_ftell(pb) + size - 4;
230 dref->type = get_le32(pb);
231 get_be32(pb); // version + flags
232 dprintf(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
234 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
235 /* macintosh alias record */
236 uint16_t volume_len, len;
242 volume_len = get_byte(pb);
243 volume_len = FFMIN(volume_len, 27);
244 get_buffer(pb, volume, 27);
245 volume[volume_len] = 0;
246 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", volume, volume_len);
250 for (type = 0; type != -1 && url_ftell(pb) < next; ) {
253 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
256 if (type == 2) { // absolute path
257 dref->path = av_mallocz(len+1);
258 get_buffer(pb, dref->path, len);
259 if (!strncmp(dref->path, volume, volume_len)) {
261 memmove(dref->path, dref->path+volume_len, len);
264 for (j = 0; j < len; j++)
265 if (dref->path[j] == ':')
267 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
272 url_fseek(pb, next, SEEK_SET);
277 static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
279 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
283 get_byte(pb); /* version */
284 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
287 ctype = get_le32(pb);
288 type = get_le32(pb); /* component subtype */
290 dprintf(c->fc, "ctype= %c%c%c%c (0x%08x)\n", *((char *)&ctype), ((char *)&ctype)[1],
291 ((char *)&ctype)[2], ((char *)&ctype)[3], (int) ctype);
292 dprintf(c->fc, "stype= %c%c%c%c\n",
293 *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
296 if(type == MKTAG('v', 'i', 'd', 'e'))
297 st->codec->codec_type = CODEC_TYPE_VIDEO;
298 else if(type == MKTAG('s', 'o', 'u', 'n'))
299 st->codec->codec_type = CODEC_TYPE_AUDIO;
300 else if(type == MKTAG('m', '1', 'a', ' '))
301 st->codec->codec_id = CODEC_ID_MP2;
302 else if(type == MKTAG('s', 'u', 'b', 'p')) {
303 st->codec->codec_type = CODEC_TYPE_SUBTITLE;
305 get_be32(pb); /* component manufacture */
306 get_be32(pb); /* component flags */
307 get_be32(pb); /* component flags mask */
310 return 0; /* nothing left to read */
312 url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset));
316 static int mp4_read_descr_len(ByteIOContext *pb)
321 int c = get_byte(pb);
322 len = (len << 7) | (c & 0x7f);
329 static int mp4_read_descr(MOVContext *c, ByteIOContext *pb, int *tag)
333 len = mp4_read_descr_len(pb);
334 dprintf(c->fc, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
338 #define MP4ESDescrTag 0x03
339 #define MP4DecConfigDescrTag 0x04
340 #define MP4DecSpecificDescrTag 0x05
342 static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
344 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
347 get_be32(pb); /* version + flags */
348 len = mp4_read_descr(c, pb, &tag);
349 if (tag == MP4ESDescrTag) {
350 get_be16(pb); /* ID */
351 get_byte(pb); /* priority */
353 get_be16(pb); /* ID */
355 len = mp4_read_descr(c, pb, &tag);
356 if (tag == MP4DecConfigDescrTag) {
357 int object_type_id = get_byte(pb);
358 get_byte(pb); /* stream type */
359 get_be24(pb); /* buffer size db */
360 get_be32(pb); /* max bitrate */
361 get_be32(pb); /* avg bitrate */
363 st->codec->codec_id= codec_get_id(ff_mp4_obj_type, object_type_id);
364 dprintf(c->fc, "esds object type id %d\n", object_type_id);
365 len = mp4_read_descr(c, pb, &tag);
366 if (tag == MP4DecSpecificDescrTag) {
367 dprintf(c->fc, "Specific MPEG4 header len=%d\n", len);
368 if((uint64_t)len > (1<<30))
370 st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
371 if (!st->codec->extradata)
372 return AVERROR(ENOMEM);
373 get_buffer(pb, st->codec->extradata, len);
374 st->codec->extradata_size = len;
376 if ((*st->codec->extradata >> 3) == 29) {
377 st->codec->codec_id = CODEC_ID_MP3ON4;
384 /* this atom contains actual media data */
385 static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
387 if(atom.size == 0) /* wrong one (MP4) */
391 return 1; /* found both, just go */
392 url_fskip(pb, atom.size);
393 return 0; /* now go for moov */
396 static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
398 uint32_t type = get_le32(pb);
400 if (type != MKTAG('q','t',' ',' '))
402 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
403 get_be32(pb); /* minor version */
404 url_fskip(pb, atom.size - 8);
408 /* this atom should contain all header atoms */
409 static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
411 if (mov_read_default(c, pb, atom) < 0)
413 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
414 /* so we don't parse the whole file if over a network */
417 return 1; /* found both, just go */
418 return 0; /* now go for mdat */
422 static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
424 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
425 MOVStreamContext *sc = st->priv_data;
426 int version = get_byte(pb);
430 return 1; /* unsupported */
432 get_byte(pb); get_byte(pb);
433 get_byte(pb); /* flags */
439 get_be32(pb); /* creation time */
440 get_be32(pb); /* modification time */
443 sc->time_scale = get_be32(pb);
444 st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
446 lang = get_be16(pb); /* language */
447 ff_mov_lang_to_iso639(lang, st->language);
448 get_be16(pb); /* quality */
453 static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
455 int version = get_byte(pb); /* version */
456 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
462 get_be32(pb); /* creation time */
463 get_be32(pb); /* modification time */
465 c->time_scale = get_be32(pb); /* time scale */
467 dprintf(c->fc, "time scale = %i\n", c->time_scale);
469 c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
470 get_be32(pb); /* preferred scale */
472 get_be16(pb); /* preferred volume */
474 url_fskip(pb, 10); /* reserved */
476 url_fskip(pb, 36); /* display matrix */
478 get_be32(pb); /* preview time */
479 get_be32(pb); /* preview duration */
480 get_be32(pb); /* poster time */
481 get_be32(pb); /* selection time */
482 get_be32(pb); /* selection duration */
483 get_be32(pb); /* current time */
484 get_be32(pb); /* next track ID */
489 static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
491 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
493 if((uint64_t)atom.size > (1<<30))
496 // currently SVQ3 decoder expect full STSD header - so let's fake it
497 // this should be fixed and just SMI header should be passed
498 av_free(st->codec->extradata);
499 st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
500 if (!st->codec->extradata)
501 return AVERROR(ENOMEM);
502 st->codec->extradata_size = 0x5a + atom.size;
503 memcpy(st->codec->extradata, "SVQ3", 4); // fake
504 get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
505 dprintf(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
509 static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
511 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
512 int little_endian = get_be16(pb);
515 switch (st->codec->codec_id) {
516 case CODEC_ID_PCM_S24BE:
517 st->codec->codec_id = CODEC_ID_PCM_S24LE;
519 case CODEC_ID_PCM_S32BE:
520 st->codec->codec_id = CODEC_ID_PCM_S32LE;
529 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
530 static int mov_read_extradata(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
532 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
533 uint64_t size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
535 if(size > INT_MAX || (uint64_t)atom.size > INT_MAX)
537 buf= av_realloc(st->codec->extradata, size);
540 st->codec->extradata= buf;
541 buf+= st->codec->extradata_size;
542 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
543 AV_WB32( buf , atom.size + 8);
544 AV_WL32( buf + 4, atom.type);
545 get_buffer(pb, buf + 8, atom.size);
549 static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
551 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
553 if((uint64_t)atom.size > (1<<30))
556 if (st->codec->codec_id == CODEC_ID_QDM2) {
557 // pass all frma atom to codec, needed at least for QDM2
558 av_free(st->codec->extradata);
559 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
560 if (!st->codec->extradata)
561 return AVERROR(ENOMEM);
562 st->codec->extradata_size = atom.size;
563 get_buffer(pb, st->codec->extradata, atom.size);
564 } else if (atom.size > 8) { /* to read frma, esds atoms */
565 if (mov_read_default(c, pb, atom) < 0)
568 url_fskip(pb, atom.size);
573 * This function reads atom content and puts data in extradata without tag
574 * nor size unlike mov_read_extradata.
576 static int mov_read_glbl(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
578 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
580 if((uint64_t)atom.size > (1<<30))
583 av_free(st->codec->extradata);
584 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
585 if (!st->codec->extradata)
586 return AVERROR(ENOMEM);
587 st->codec->extradata_size = atom.size;
588 get_buffer(pb, st->codec->extradata, atom.size);
592 static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
594 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
595 MOVStreamContext *sc = st->priv_data;
596 unsigned int i, entries;
598 get_byte(pb); /* version */
599 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
601 entries = get_be32(pb);
603 if(entries >= UINT_MAX/sizeof(int64_t))
606 sc->chunk_count = entries;
607 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
608 if (!sc->chunk_offsets)
610 if (atom.type == MKTAG('s', 't', 'c', 'o')) {
611 for(i=0; i<entries; i++) {
612 sc->chunk_offsets[i] = get_be32(pb);
614 } else if (atom.type == MKTAG('c', 'o', '6', '4')) {
615 for(i=0; i<entries; i++) {
616 sc->chunk_offsets[i] = get_be64(pb);
624 static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
626 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
627 MOVStreamContext *sc = st->priv_data;
628 int entries, frames_per_sample;
630 uint8_t codec_name[32];
632 /* for palette traversal */
633 unsigned int color_depth;
634 unsigned int color_start;
635 unsigned int color_count;
636 unsigned int color_end;
640 const uint8_t *color_table;
641 int j, pseudo_stream_id;
642 unsigned char r, g, b;
644 get_byte(pb); /* version */
645 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
647 entries = get_be32(pb);
649 for(pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) { //Parsing Sample description table
652 MOV_atom_t a = { 0, 0, 0 };
653 offset_t start_pos = url_ftell(pb);
654 int size = get_be32(pb); /* size */
655 format = get_le32(pb); /* data format */
657 get_be32(pb); /* reserved */
658 get_be16(pb); /* reserved */
659 dref_id = get_be16(pb);
661 if (st->codec->codec_tag &&
662 (c->fc->video_codec_id ? codec_get_id(codec_movvideo_tags, format) != c->fc->video_codec_id
663 : st->codec->codec_tag != MKTAG('j', 'p', 'e', 'g'))
665 /* multiple fourcc, we skip jpeg, this isnt correct, we should export it as
666 seperate AVStream but this needs a few changes in the mov demuxer, patch
668 url_fskip(pb, size - (url_ftell(pb) - start_pos));
671 sc->pseudo_stream_id= pseudo_stream_id;
672 sc->dref_id= dref_id;
674 st->codec->codec_tag = format;
675 id = codec_get_id(codec_movaudio_tags, format);
676 if (id<=0 && (format&0xFFFF) == 'm' + ('s'<<8))
677 id = codec_get_id(codec_wav_tags, bswap_32(format)&0xFFFF);
679 if (st->codec->codec_type != CODEC_TYPE_VIDEO && id > 0) {
680 st->codec->codec_type = CODEC_TYPE_AUDIO;
681 } else if (st->codec->codec_type != CODEC_TYPE_AUDIO && /* do not overwrite codec type */
682 format && format != MKTAG('m', 'p', '4', 's')) { /* skip old asf mpeg4 tag */
683 id = codec_get_id(codec_movvideo_tags, format);
685 id = codec_get_id(codec_bmp_tags, format);
687 st->codec->codec_type = CODEC_TYPE_VIDEO;
688 else if(st->codec->codec_type == CODEC_TYPE_DATA){
689 id = codec_get_id(ff_codec_movsubtitle_tags, format);
691 st->codec->codec_type = CODEC_TYPE_SUBTITLE;
695 dprintf(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
696 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
697 (format >> 24) & 0xff, st->codec->codec_type);
699 if(st->codec->codec_type==CODEC_TYPE_VIDEO) {
700 st->codec->codec_id = id;
701 get_be16(pb); /* version */
702 get_be16(pb); /* revision level */
703 get_be32(pb); /* vendor */
704 get_be32(pb); /* temporal quality */
705 get_be32(pb); /* spatial quality */
707 st->codec->width = get_be16(pb); /* width */
708 st->codec->height = get_be16(pb); /* height */
710 get_be32(pb); /* horiz resolution */
711 get_be32(pb); /* vert resolution */
712 get_be32(pb); /* data size, always 0 */
713 frames_per_sample = get_be16(pb); /* frames per samples */
715 dprintf(c->fc, "frames/samples = %d\n", frames_per_sample);
717 get_buffer(pb, codec_name, 32); /* codec name, pascal string (FIXME: true for mp4?) */
718 if (codec_name[0] <= 31) {
719 memcpy(st->codec->codec_name, &codec_name[1],codec_name[0]);
720 st->codec->codec_name[codec_name[0]] = 0;
723 st->codec->bits_per_sample = get_be16(pb); /* depth */
724 st->codec->color_table_id = get_be16(pb); /* colortable id */
726 /* figure out the palette situation */
727 color_depth = st->codec->bits_per_sample & 0x1F;
728 color_greyscale = st->codec->bits_per_sample & 0x20;
730 /* if the depth is 2, 4, or 8 bpp, file is palettized */
731 if ((color_depth == 2) || (color_depth == 4) ||
732 (color_depth == 8)) {
733 if (color_greyscale) {
734 /* compute the greyscale palette */
735 color_count = 1 << color_depth;
737 color_dec = 256 / (color_count - 1);
738 for (j = 0; j < color_count; j++) {
739 r = g = b = color_index;
740 c->palette_control.palette[j] =
741 (r << 16) | (g << 8) | (b);
742 color_index -= color_dec;
746 } else if (st->codec->color_table_id & 0x08) {
747 /* if flag bit 3 is set, use the default palette */
748 color_count = 1 << color_depth;
749 if (color_depth == 2)
750 color_table = ff_qt_default_palette_4;
751 else if (color_depth == 4)
752 color_table = ff_qt_default_palette_16;
754 color_table = ff_qt_default_palette_256;
756 for (j = 0; j < color_count; j++) {
757 r = color_table[j * 4 + 0];
758 g = color_table[j * 4 + 1];
759 b = color_table[j * 4 + 2];
760 c->palette_control.palette[j] =
761 (r << 16) | (g << 8) | (b);
764 /* load the palette from the file */
765 color_start = get_be32(pb);
766 color_count = get_be16(pb);
767 color_end = get_be16(pb);
768 if ((color_start <= 255) &&
769 (color_end <= 255)) {
770 for (j = color_start; j <= color_end; j++) {
771 /* each R, G, or B component is 16 bits;
772 * only use the top 8 bits; skip alpha bytes
782 c->palette_control.palette[j] =
783 (r << 16) | (g << 8) | (b);
787 st->codec->palctrl = &c->palette_control;
788 st->codec->palctrl->palette_changed = 1;
790 st->codec->palctrl = NULL;
791 } else if(st->codec->codec_type==CODEC_TYPE_AUDIO) {
793 uint16_t version = get_be16(pb);
795 st->codec->codec_id = id;
796 get_be16(pb); /* revision level */
797 get_be32(pb); /* vendor */
799 st->codec->channels = get_be16(pb); /* channel count */
800 dprintf(c->fc, "audio channels %d\n", st->codec->channels);
801 st->codec->bits_per_sample = get_be16(pb); /* sample size */
803 sc->audio_cid = get_be16(pb);
804 get_be16(pb); /* packet size = 0 */
806 st->codec->sample_rate = ((get_be32(pb) >> 16));
808 switch (st->codec->codec_id) {
809 case CODEC_ID_PCM_S8:
810 case CODEC_ID_PCM_U8:
811 if (st->codec->bits_per_sample == 16)
812 st->codec->codec_id = CODEC_ID_PCM_S16BE;
814 case CODEC_ID_PCM_S16LE:
815 case CODEC_ID_PCM_S16BE:
816 if (st->codec->bits_per_sample == 8)
817 st->codec->codec_id = CODEC_ID_PCM_S8;
818 else if (st->codec->bits_per_sample == 24)
819 st->codec->codec_id = CODEC_ID_PCM_S24BE;
821 /* set values for old format before stsd version 1 appeared */
823 sc->samples_per_frame = 6;
824 sc->bytes_per_frame = 2*st->codec->channels;
827 sc->samples_per_frame = 6;
828 sc->bytes_per_frame = 1*st->codec->channels;
830 case CODEC_ID_ADPCM_IMA_QT:
831 sc->samples_per_frame = 64;
832 sc->bytes_per_frame = 34*st->codec->channels;
838 //Read QT version 1 fields. In version 0 these do not exist.
839 dprintf(c->fc, "version =%d, isom =%d\n",version,c->isom);
842 sc->samples_per_frame = get_be32(pb);
843 get_be32(pb); /* bytes per packet */
844 sc->bytes_per_frame = get_be32(pb);
845 get_be32(pb); /* bytes per sample */
846 } else if(version==2) {
847 get_be32(pb); /* sizeof struct only */
848 st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
849 st->codec->channels = get_be32(pb);
850 get_be32(pb); /* always 0x7F000000 */
851 get_be32(pb); /* bits per channel if sound is uncompressed */
852 get_be32(pb); /* lcpm format specific flag */
853 get_be32(pb); /* bytes per audio packet if constant */
854 get_be32(pb); /* lpcm frames per audio packet if constant */
858 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
859 if (bits_per_sample) {
860 st->codec->bits_per_sample = bits_per_sample;
861 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
863 } else if(st->codec->codec_type==CODEC_TYPE_SUBTITLE){
864 st->codec->codec_id= id;
866 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
867 url_fskip(pb, size - (url_ftell(pb) - start_pos));
869 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
870 a.size = size - (url_ftell(pb) - start_pos);
872 if (mov_read_default(c, pb, a) < 0)
874 } else if (a.size > 0)
875 url_fskip(pb, a.size);
878 if(st->codec->codec_type==CODEC_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
879 st->codec->sample_rate= sc->time_scale;
881 /* special codec parameters handling */
882 switch (st->codec->codec_id) {
883 #ifdef CONFIG_DV_DEMUXER
884 case CODEC_ID_DVAUDIO:
885 c->dv_fctx = av_alloc_format_context();
886 c->dv_demux = dv_init_demux(c->dv_fctx);
888 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
891 sc->dv_audio_container = 1;
892 st->codec->codec_id = CODEC_ID_PCM_S16LE;
895 /* no ifdef since parameters are always those */
896 case CODEC_ID_AMR_WB:
897 st->codec->sample_rate= 16000;
898 st->codec->channels= 1; /* really needed */
900 case CODEC_ID_AMR_NB:
901 st->codec->sample_rate= 8000;
902 st->codec->channels= 1; /* really needed */
906 st->codec->codec_type = CODEC_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
907 st->need_parsing = AVSTREAM_PARSE_FULL;
909 case CODEC_ID_ADPCM_MS:
910 case CODEC_ID_ADPCM_IMA_WAV:
911 st->codec->block_align = sc->bytes_per_frame;
920 static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
922 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
923 MOVStreamContext *sc = st->priv_data;
924 unsigned int i, entries;
926 get_byte(pb); /* version */
927 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
929 entries = get_be32(pb);
931 if(entries >= UINT_MAX / sizeof(MOV_stsc_t))
934 dprintf(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
936 sc->sample_to_chunk_sz = entries;
937 sc->sample_to_chunk = av_malloc(entries * sizeof(MOV_stsc_t));
938 if (!sc->sample_to_chunk)
940 for(i=0; i<entries; i++) {
941 sc->sample_to_chunk[i].first = get_be32(pb);
942 sc->sample_to_chunk[i].count = get_be32(pb);
943 sc->sample_to_chunk[i].id = get_be32(pb);
948 static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
950 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
951 MOVStreamContext *sc = st->priv_data;
952 unsigned int i, entries;
954 get_byte(pb); /* version */
955 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
957 entries = get_be32(pb);
959 if(entries >= UINT_MAX / sizeof(int))
962 sc->keyframe_count = entries;
964 dprintf(c->fc, "keyframe_count = %d\n", sc->keyframe_count);
966 sc->keyframes = av_malloc(entries * sizeof(int));
969 for(i=0; i<entries; i++) {
970 sc->keyframes[i] = get_be32(pb);
971 //dprintf(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
976 static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
978 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
979 MOVStreamContext *sc = st->priv_data;
980 unsigned int i, entries, sample_size;
982 get_byte(pb); /* version */
983 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
985 sample_size = get_be32(pb);
986 if (!sc->sample_size) /* do not overwrite value computed in stsd */
987 sc->sample_size = sample_size;
988 entries = get_be32(pb);
989 if(entries >= UINT_MAX / sizeof(int))
992 sc->sample_count = entries;
996 dprintf(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, sc->sample_count);
998 sc->sample_sizes = av_malloc(entries * sizeof(int));
999 if (!sc->sample_sizes)
1001 for(i=0; i<entries; i++) {
1002 sc->sample_sizes[i] = get_be32(pb);
1003 dprintf(c->fc, "sample_sizes[]=%d\n", sc->sample_sizes[i]);
1008 static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1010 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1011 MOVStreamContext *sc = st->priv_data;
1012 unsigned int i, entries;
1014 int64_t total_sample_count=0;
1016 get_byte(pb); /* version */
1017 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1018 entries = get_be32(pb);
1019 if(entries >= UINT_MAX / sizeof(MOV_stts_t))
1022 sc->stts_count = entries;
1023 sc->stts_data = av_malloc(entries * sizeof(MOV_stts_t));
1026 dprintf(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
1030 for(i=0; i<entries; i++) {
1031 int sample_duration;
1034 sample_count=get_be32(pb);
1035 sample_duration = get_be32(pb);
1036 sc->stts_data[i].count= sample_count;
1037 sc->stts_data[i].duration= sample_duration;
1039 sc->time_rate= ff_gcd(sc->time_rate, sample_duration);
1041 dprintf(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
1043 duration+=(int64_t)sample_duration*sample_count;
1044 total_sample_count+=sample_count;
1047 st->nb_frames= total_sample_count;
1049 st->duration= duration;
1053 static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1055 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1056 MOVStreamContext *sc = st->priv_data;
1057 unsigned int i, entries;
1059 get_byte(pb); /* version */
1060 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1061 entries = get_be32(pb);
1062 if(entries >= UINT_MAX / sizeof(MOV_stts_t))
1065 sc->ctts_count = entries;
1066 sc->ctts_data = av_malloc(entries * sizeof(MOV_stts_t));
1069 dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1071 for(i=0; i<entries; i++) {
1072 int count =get_be32(pb);
1073 int duration =get_be32(pb);
1076 av_log(c->fc, AV_LOG_ERROR, "negative ctts, ignoring\n");
1078 url_fskip(pb, 8 * (entries - i - 1));
1081 sc->ctts_data[i].count = count;
1082 sc->ctts_data[i].duration= duration;
1084 sc->time_rate= ff_gcd(sc->time_rate, duration);
1089 static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1092 MOVStreamContext *sc;
1094 st = av_new_stream(c->fc, c->fc->nb_streams);
1096 sc = av_mallocz(sizeof(MOVStreamContext));
1103 st->codec->codec_type = CODEC_TYPE_DATA;
1104 st->start_time = 0; /* XXX: check */
1106 return mov_read_default(c, pb, atom);
1109 static void mov_parse_udta_string(ByteIOContext *pb, char *str, int size)
1111 uint16_t str_size = get_be16(pb); /* string length */;
1113 get_be16(pb); /* skip language */
1114 get_buffer(pb, str, FFMIN(size, str_size));
1117 static int mov_read_udta(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1119 uint64_t end = url_ftell(pb) + atom.size;
1121 while (url_ftell(pb) + 8 < end) {
1122 uint32_t tag_size = get_be32(pb);
1123 uint32_t tag = get_le32(pb);
1124 uint64_t next = url_ftell(pb) + tag_size - 8;
1126 if (next > end) // stop if tag_size is wrong
1130 case MKTAG(0xa9,'n','a','m'):
1131 mov_parse_udta_string(pb, c->fc->title, sizeof(c->fc->title));
1133 case MKTAG(0xa9,'w','r','t'):
1134 mov_parse_udta_string(pb, c->fc->author, sizeof(c->fc->author));
1136 case MKTAG(0xa9,'c','p','y'):
1137 mov_parse_udta_string(pb, c->fc->copyright, sizeof(c->fc->copyright));
1139 case MKTAG(0xa9,'i','n','f'):
1140 mov_parse_udta_string(pb, c->fc->comment, sizeof(c->fc->comment));
1146 url_fseek(pb, next, SEEK_SET);
1152 static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1154 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1155 int version = get_byte(pb);
1157 get_byte(pb); get_byte(pb);
1158 get_byte(pb); /* flags */
1160 MOV_TRACK_ENABLED 0x0001
1161 MOV_TRACK_IN_MOVIE 0x0002
1162 MOV_TRACK_IN_PREVIEW 0x0004
1163 MOV_TRACK_IN_POSTER 0x0008
1170 get_be32(pb); /* creation time */
1171 get_be32(pb); /* modification time */
1173 st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1174 get_be32(pb); /* reserved */
1175 st->start_time = 0; /* check */
1176 (version == 1) ? get_be64(pb) : get_be32(pb); /* highlevel (considering edits) duration in movie timebase */
1177 get_be32(pb); /* reserved */
1178 get_be32(pb); /* reserved */
1180 get_be16(pb); /* layer */
1181 get_be16(pb); /* alternate group */
1182 get_be16(pb); /* volume */
1183 get_be16(pb); /* reserved */
1185 url_fskip(pb, 36); /* display matrix */
1187 /* those are fixed-point */
1188 get_be32(pb); /* track width */
1189 get_be32(pb); /* track height */
1194 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1195 /* like the files created with Adobe Premiere 5.0, for samples see */
1196 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1197 static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1202 return 0; /* continue */
1203 if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1204 url_fskip(pb, atom.size - 4);
1207 atom.type = get_le32(pb);
1210 if (atom.type != MKTAG('m', 'd', 'a', 't')) {
1211 url_fskip(pb, atom.size);
1214 err = mov_read_mdat(c, pb, atom);
1218 static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1223 uint8_t *moov_data; /* uncompressed data */
1224 long cmov_len, moov_len;
1227 get_be32(pb); /* dcom atom */
1228 if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1230 if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
1231 av_log(NULL, AV_LOG_ERROR, "unknown compression for cmov atom !");
1234 get_be32(pb); /* cmvd atom */
1235 if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1237 moov_len = get_be32(pb); /* uncompressed size */
1238 cmov_len = atom.size - 6 * 4;
1240 cmov_data = av_malloc(cmov_len);
1243 moov_data = av_malloc(moov_len);
1248 get_buffer(pb, cmov_data, cmov_len);
1249 if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1251 if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
1253 atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1255 atom.size = moov_len;
1257 // { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1259 ret = mov_read_default(c, &ctx, atom);
1264 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
1269 /* edit list atom */
1270 static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1272 MOVStreamContext *sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
1275 get_byte(pb); /* version */
1276 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1277 edit_count= sc->edit_count = get_be32(pb); /* entries */
1279 for(i=0; i<edit_count; i++){
1281 get_be32(pb); /* Track duration */
1282 time = get_be32(pb); /* Media time */
1283 get_be32(pb); /* Media rate */
1285 av_log(c->fc, AV_LOG_WARNING, "edit list not starting at 0, "
1286 "a/v desync might occur, patch welcome\n");
1288 dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, sc->edit_count);
1292 static const MOVParseTableEntry mov_default_parse_table[] = {
1294 { MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1295 { MKTAG( 'c', 't', 't', 's' ), mov_read_ctts }, /* composition time to sample */
1296 { MKTAG( 'd', 'i', 'n', 'f' ), mov_read_default },
1297 { MKTAG( 'd', 'r', 'e', 'f' ), mov_read_dref },
1298 { MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
1299 { MKTAG( 'e', 'l', 's', 't' ), mov_read_elst },
1300 { MKTAG( 'e', 'n', 'd', 'a' ), mov_read_enda },
1301 { MKTAG( 'f', 'i', 'e', 'l' ), mov_read_extradata },
1302 { MKTAG( 'f', 't', 'y', 'p' ), mov_read_ftyp },
1303 { MKTAG( 'g', 'l', 'b', 'l' ), mov_read_glbl },
1304 { MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1305 { MKTAG( 'j', 'p', '2', 'h' ), mov_read_extradata },
1306 { MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1307 { MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1308 { MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1309 { MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1310 { MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1311 { MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1312 { MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorenson extension ??? */
1313 { MKTAG( 'a', 'l', 'a', 'c' ), mov_read_extradata }, /* alac specific atom */
1314 { MKTAG( 'a', 'v', 'c', 'C' ), mov_read_glbl },
1315 { MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1316 { MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1317 { MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1318 { MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1319 { MKTAG( 's', 't', 's', 's' ), mov_read_stss }, /* sync sample */
1320 { MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1321 { MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1322 { MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1323 { MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1324 { MKTAG( 'u', 'd', 't', 'a' ), mov_read_udta },
1325 { MKTAG( 'w', 'a', 'v', 'e' ), mov_read_wave },
1326 { MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1327 { MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1328 { MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
1332 /* XXX: is it sufficient ? */
1333 static int mov_probe(AVProbeData *p)
1335 unsigned int offset;
1339 /* check file header */
1342 /* ignore invalid offset */
1343 if ((offset + 8) > (unsigned int)p->buf_size)
1345 tag = AV_RL32(p->buf + offset + 4);
1347 /* check for obvious tags */
1348 case MKTAG( 'j', 'P', ' ', ' ' ): /* jpeg 2000 signature */
1349 case MKTAG( 'm', 'o', 'o', 'v' ):
1350 case MKTAG( 'm', 'd', 'a', 't' ):
1351 case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
1352 case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
1353 return AVPROBE_SCORE_MAX;
1354 /* those are more common words, so rate then a bit less */
1355 case MKTAG( 'e', 'd', 'i', 'w' ): /* xdcam files have reverted first tags */
1356 case MKTAG( 'w', 'i', 'd', 'e' ):
1357 case MKTAG( 'f', 'r', 'e', 'e' ):
1358 case MKTAG( 'j', 'u', 'n', 'k' ):
1359 case MKTAG( 'p', 'i', 'c', 't' ):
1360 return AVPROBE_SCORE_MAX - 5;
1361 case MKTAG( 'f', 't', 'y', 'p' ):
1362 case MKTAG( 's', 'k', 'i', 'p' ):
1363 case MKTAG( 'u', 'u', 'i', 'd' ):
1364 offset = AV_RB32(p->buf+offset) + offset;
1365 /* if we only find those cause probedata is too small at least rate them */
1366 score = AVPROBE_SCORE_MAX - 50;
1369 /* unrecognized tag */
1376 static void mov_build_index(MOVContext *mov, AVStream *st)
1378 MOVStreamContext *sc = st->priv_data;
1379 offset_t current_offset;
1380 int64_t current_dts = 0;
1381 unsigned int stts_index = 0;
1382 unsigned int stsc_index = 0;
1383 unsigned int stss_index = 0;
1386 if (sc->sample_sizes || st->codec->codec_type == CODEC_TYPE_VIDEO ||
1387 sc->audio_cid == -2) {
1388 unsigned int current_sample = 0;
1389 unsigned int stts_sample = 0;
1390 unsigned int keyframe, sample_size;
1391 unsigned int distance = 0;
1392 int key_off = sc->keyframes && sc->keyframes[0] == 1;
1394 st->nb_frames = sc->sample_count;
1395 for (i = 0; i < sc->chunk_count; i++) {
1396 current_offset = sc->chunk_offsets[i];
1397 if (stsc_index + 1 < sc->sample_to_chunk_sz &&
1398 i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1400 for (j = 0; j < sc->sample_to_chunk[stsc_index].count; j++) {
1401 if (current_sample >= sc->sample_count) {
1402 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1405 keyframe = !sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index];
1408 if (stss_index + 1 < sc->keyframe_count)
1411 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1412 dprintf(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1413 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1414 current_offset, current_dts, sample_size, distance, keyframe);
1415 if(sc->sample_to_chunk[stsc_index].id - 1 == sc->pseudo_stream_id)
1416 av_add_index_entry(st, current_offset, current_dts, sample_size, distance,
1417 keyframe ? AVINDEX_KEYFRAME : 0);
1418 current_offset += sample_size;
1419 assert(sc->stts_data[stts_index].duration % sc->time_rate == 0);
1420 current_dts += sc->stts_data[stts_index].duration / sc->time_rate;
1424 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1430 } else { /* read whole chunk */
1431 unsigned int chunk_samples, chunk_size, chunk_duration;
1432 unsigned int frames = 1;
1433 for (i = 0; i < sc->chunk_count; i++) {
1434 current_offset = sc->chunk_offsets[i];
1435 if (stsc_index + 1 < sc->sample_to_chunk_sz &&
1436 i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1438 chunk_samples = sc->sample_to_chunk[stsc_index].count;
1439 /* get chunk size, beware of alaw/ulaw/mace */
1440 if (sc->samples_per_frame > 0 &&
1441 (chunk_samples * sc->bytes_per_frame % sc->samples_per_frame == 0)) {
1442 if (sc->samples_per_frame < 1024)
1443 chunk_size = chunk_samples * sc->bytes_per_frame / sc->samples_per_frame;
1445 chunk_size = sc->bytes_per_frame;
1446 frames = chunk_samples / sc->samples_per_frame;
1447 chunk_samples = sc->samples_per_frame;
1449 } else if (sc->sample_size > 1 || st->codec->bits_per_sample == 8) {
1450 chunk_size = chunk_samples * sc->sample_size;
1452 av_log(mov->fc, AV_LOG_ERROR, "could not determine chunk size, report problem\n");
1455 for (j = 0; j < frames; j++) {
1456 av_add_index_entry(st, current_offset, current_dts, chunk_size, 0, AVINDEX_KEYFRAME);
1457 /* get chunk duration */
1459 while (chunk_samples > 0) {
1460 if (chunk_samples < sc->stts_data[stts_index].count) {
1461 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1462 sc->stts_data[stts_index].count -= chunk_samples;
1465 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1466 chunk_samples -= sc->stts_data[stts_index].count;
1467 if (stts_index + 1 < sc->stts_count)
1471 current_offset += sc->bytes_per_frame;
1472 dprintf(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", size %d, "
1473 "duration %d\n", st->index, i, current_offset, current_dts, chunk_size, chunk_duration);
1474 assert(chunk_duration % sc->time_rate == 0);
1475 current_dts += chunk_duration / sc->time_rate;
1480 /* adjust sample count to avindex entries */
1481 sc->sample_count = st->nb_index_entries;
1484 static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
1486 MOVContext *mov = s->priv_data;
1487 ByteIOContext *pb = s->pb;
1489 MOV_atom_t atom = { 0, 0, 0 };
1493 if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1494 atom.size = url_fsize(pb);
1496 atom.size = INT64_MAX;
1498 /* check MOV header */
1499 err = mov_read_default(mov, pb, atom);
1500 if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
1501 av_log(s, AV_LOG_ERROR, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%"PRId64"\n",
1502 err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1505 dprintf(mov->fc, "on_parse_exit_offset=%d\n", (int) url_ftell(pb));
1507 for(i=0; i<s->nb_streams; i++) {
1508 AVStream *st = s->streams[i];
1509 MOVStreamContext *sc = st->priv_data;
1511 if(!sc->stts_count || !sc->chunk_count || !sc->sample_to_chunk_sz ||
1512 (!sc->sample_size && !sc->sample_count)){
1513 av_log(s, AV_LOG_ERROR, "missing mandatory atoms, broken header\n");
1514 sc->sample_count = 0; //ignore track
1520 sc->time_scale= mov->time_scale;
1521 av_set_pts_info(st, 64, sc->time_rate, sc->time_scale);
1523 if (st->codec->codec_type == CODEC_TYPE_AUDIO && sc->stts_count == 1)
1524 st->codec->frame_size = av_rescale(sc->time_rate, st->codec->sample_rate, sc->time_scale);
1526 if(st->duration != AV_NOPTS_VALUE){
1527 assert(st->duration % sc->time_rate == 0);
1528 st->duration /= sc->time_rate;
1531 mov_build_index(mov, st);
1533 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
1534 if (url_fopen(&sc->pb, sc->drefs[sc->dref_id-1].path, URL_RDONLY) < 0)
1535 av_log(s, AV_LOG_ERROR, "stream %d, error opening external essence: %s\n",
1536 st->index, strerror(errno));
1540 switch (st->codec->codec_id) {
1541 #ifdef CONFIG_H261_DECODER
1544 #ifdef CONFIG_H263_DECODER
1547 #ifdef CONFIG_MPEG4_DECODER
1548 case CODEC_ID_MPEG4:
1550 st->codec->width= 0; /* let decoder init width/height */
1551 st->codec->height= 0;
1553 #ifdef CONFIG_LIBFAAD
1556 #ifdef CONFIG_VORBIS_DECODER
1557 case CODEC_ID_VORBIS:
1559 case CODEC_ID_MP3ON4:
1560 st->codec->sample_rate= 0; /* let decoder init parameters properly */
1565 for(i=0; i<s->nb_streams; i++) {
1566 MOVStreamContext *sc = s->streams[i]->priv_data;
1567 /* Do not need those anymore. */
1568 av_freep(&sc->chunk_offsets);
1569 av_freep(&sc->sample_to_chunk);
1570 av_freep(&sc->sample_sizes);
1571 av_freep(&sc->keyframes);
1572 av_freep(&sc->stts_data);
1577 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
1579 MOVContext *mov = s->priv_data;
1580 MOVStreamContext *sc = 0;
1581 AVIndexEntry *sample = 0;
1582 int64_t best_dts = INT64_MAX;
1585 for (i = 0; i < s->nb_streams; i++) {
1586 AVStream *st = s->streams[i];
1587 MOVStreamContext *msc = st->priv_data;
1588 if (st->discard != AVDISCARD_ALL && msc->pb && msc->current_sample < msc->sample_count) {
1589 AVIndexEntry *current_sample = &st->index_entries[msc->current_sample];
1590 int64_t dts = av_rescale(current_sample->timestamp * (int64_t)msc->time_rate,
1591 AV_TIME_BASE, msc->time_scale);
1592 dprintf(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
1593 if (!sample || (url_is_streamed(s->pb) && current_sample->pos < sample->pos) ||
1594 (!url_is_streamed(s->pb) &&
1595 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
1596 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
1597 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
1598 sample = current_sample;
1606 /* must be done just before reading, to avoid infinite loop on sample */
1607 sc->current_sample++;
1608 if (url_fseek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
1609 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
1610 sc->ffindex, sample->pos);
1613 av_get_packet(sc->pb, pkt, sample->size);
1614 #ifdef CONFIG_DV_DEMUXER
1615 if (mov->dv_demux && sc->dv_audio_container) {
1616 dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
1619 if (dv_get_packet(mov->dv_demux, pkt) < 0)
1623 pkt->stream_index = sc->ffindex;
1624 pkt->dts = sample->timestamp;
1625 if (sc->ctts_data) {
1626 assert(sc->ctts_data[sc->sample_to_ctime_index].duration % sc->time_rate == 0);
1627 pkt->pts = pkt->dts + sc->ctts_data[sc->sample_to_ctime_index].duration / sc->time_rate;
1628 /* update ctts context */
1629 sc->sample_to_ctime_sample++;
1630 if (sc->sample_to_ctime_index < sc->ctts_count &&
1631 sc->ctts_data[sc->sample_to_ctime_index].count == sc->sample_to_ctime_sample) {
1632 sc->sample_to_ctime_index++;
1633 sc->sample_to_ctime_sample = 0;
1636 pkt->pts = pkt->dts;
1638 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? PKT_FLAG_KEY : 0;
1639 pkt->pos = sample->pos;
1640 dprintf(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
1641 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
1645 static int mov_seek_stream(AVStream *st, int64_t timestamp, int flags)
1647 MOVStreamContext *sc = st->priv_data;
1648 int sample, time_sample;
1651 sample = av_index_search_timestamp(st, timestamp, flags);
1652 dprintf(st->codec, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
1653 if (sample < 0) /* not sure what to do */
1655 sc->current_sample = sample;
1656 dprintf(st->codec, "stream %d, found sample %d\n", st->index, sc->current_sample);
1657 /* adjust ctts index */
1658 if (sc->ctts_data) {
1660 for (i = 0; i < sc->ctts_count; i++) {
1661 int next = time_sample + sc->ctts_data[i].count;
1662 if (next > sc->current_sample) {
1663 sc->sample_to_ctime_index = i;
1664 sc->sample_to_ctime_sample = sc->current_sample - time_sample;
1673 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
1676 int64_t seek_timestamp, timestamp;
1680 if (stream_index >= s->nb_streams)
1683 st = s->streams[stream_index];
1684 sample = mov_seek_stream(st, sample_time, flags);
1688 /* adjust seek timestamp to found sample timestamp */
1689 seek_timestamp = st->index_entries[sample].timestamp;
1691 for (i = 0; i < s->nb_streams; i++) {
1693 if (stream_index == i || st->discard == AVDISCARD_ALL)
1696 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
1697 mov_seek_stream(st, timestamp, flags);
1702 static int mov_read_close(AVFormatContext *s)
1705 MOVContext *mov = s->priv_data;
1706 for(i=0; i<s->nb_streams; i++) {
1707 MOVStreamContext *sc = s->streams[i]->priv_data;
1708 av_freep(&sc->ctts_data);
1709 for (j=0; j<sc->drefs_count; j++)
1710 av_freep(&sc->drefs[j].path);
1711 av_freep(&sc->drefs);
1712 if (sc->pb && sc->pb != s->pb)
1716 for(i=0; i<mov->dv_fctx->nb_streams; i++){
1717 av_freep(&mov->dv_fctx->streams[i]->codec);
1718 av_freep(&mov->dv_fctx->streams[i]);
1720 av_freep(&mov->dv_fctx);
1721 av_freep(&mov->dv_demux);
1726 AVInputFormat mov_demuxer = {
1727 "mov,mp4,m4a,3gp,3g2,mj2",
1728 "QuickTime/MPEG4/Motion JPEG 2000 format",