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;
87 uint64_t base_data_offset;
103 typedef struct MOVStreamContext {
105 int ffindex; /* the ffmpeg stream id */
107 unsigned int chunk_count;
108 int64_t *chunk_offsets;
109 unsigned int stts_count;
110 MOV_stts_t *stts_data;
111 unsigned int ctts_count;
112 MOV_stts_t *ctts_data;
113 unsigned int edit_count; /* number of 'edit' (elst atom) */
114 unsigned int sample_to_chunk_sz;
115 MOV_stsc_t *sample_to_chunk;
116 int sample_to_ctime_index;
117 int sample_to_ctime_sample;
118 unsigned int sample_size;
119 unsigned int sample_count;
121 unsigned int keyframe_count;
126 unsigned int bytes_per_frame;
127 unsigned int samples_per_frame;
128 int dv_audio_container;
129 int pseudo_stream_id;
130 int16_t audio_cid; ///< stsd audio compression id
131 unsigned drefs_count;
136 typedef struct MOVContext {
139 int64_t duration; /* duration of the longest track */
140 int found_moov; /* when both 'moov' and 'mdat' sections has been found */
141 int found_mdat; /* we suppose we have enough data to read the file */
142 AVPaletteControl palette_control;
143 DVDemuxContext *dv_demux;
144 AVFormatContext *dv_fctx;
145 int isom; /* 1 if file is ISO Media (mp4/3gp) */
146 MOVFragment fragment; ///< current fragment in moof atom
147 MOVTrackExt *trex_data;
152 /* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
154 /* those functions parse an atom */
156 1: found what I wanted, exit
157 0: continue to parse next atom
158 <0: error occurred, exit
160 /* links atom IDs to parse functions */
161 typedef struct MOVParseTableEntry {
163 int (*parse)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
164 } MOVParseTableEntry;
166 static const MOVParseTableEntry mov_default_parse_table[];
168 static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
170 int64_t total_size = 0;
175 a.offset = atom.offset;
178 atom.size = INT64_MAX;
179 while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
183 a.size = get_be32(pb);
184 a.type = get_le32(pb);
188 dprintf(c->fc, "type: %08x %.4s sz: %"PRIx64" %"PRIx64" %"PRIx64"\n",
189 a.type, (char*)&a.type, a.size, atom.size, total_size);
190 if (a.size == 1) { /* 64 bit extended size */
191 a.size = get_be64(pb) - 8;
196 a.size = atom.size - total_size;
203 a.size = FFMIN(a.size, atom.size - total_size);
205 for (i = 0; mov_default_parse_table[i].type != 0
206 && mov_default_parse_table[i].type != a.type; i++)
209 if (mov_default_parse_table[i].type == 0) { /* skip leaf atoms data */
210 url_fskip(pb, a.size);
212 offset_t start_pos = url_ftell(pb);
214 err = mov_default_parse_table[i].parse(c, pb, a);
215 if (url_is_streamed(pb) && c->found_moov && c->found_mdat)
217 left = a.size - url_ftell(pb) + start_pos;
218 if (left > 0) /* skip garbage at atom end */
223 total_size += a.size;
226 if (!err && total_size < atom.size && atom.size < 0x7ffff) {
227 url_fskip(pb, atom.size - total_size);
233 static int mov_read_dref(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
235 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
236 MOVStreamContext *sc = st->priv_data;
239 get_be32(pb); // version + flags
240 entries = get_be32(pb);
241 if (entries >= UINT_MAX / sizeof(*sc->drefs))
243 sc->drefs_count = entries;
244 sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
246 for (i = 0; i < sc->drefs_count; i++) {
247 MOV_dref_t *dref = &sc->drefs[i];
248 uint32_t size = get_be32(pb);
249 offset_t next = url_ftell(pb) + size - 4;
251 dref->type = get_le32(pb);
252 get_be32(pb); // version + flags
253 dprintf(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
255 if (dref->type == MKTAG('a','l','i','s') && size > 150) {
256 /* macintosh alias record */
257 uint16_t volume_len, len;
263 volume_len = get_byte(pb);
264 volume_len = FFMIN(volume_len, 27);
265 get_buffer(pb, volume, 27);
266 volume[volume_len] = 0;
267 av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", volume, volume_len);
271 for (type = 0; type != -1 && url_ftell(pb) < next; ) {
274 av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
277 if (type == 2) { // absolute path
279 dref->path = av_mallocz(len+1);
281 return AVERROR(ENOMEM);
282 get_buffer(pb, dref->path, len);
283 if (len > volume_len && !strncmp(dref->path, volume, volume_len)) {
285 memmove(dref->path, dref->path+volume_len, len);
288 for (j = 0; j < len; j++)
289 if (dref->path[j] == ':')
291 av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
296 url_fseek(pb, next, SEEK_SET);
301 static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
303 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
307 get_byte(pb); /* version */
308 get_be24(pb); /* flags */
311 ctype = get_le32(pb);
312 type = get_le32(pb); /* component subtype */
314 dprintf(c->fc, "ctype= %c%c%c%c (0x%08x)\n", *((char *)&ctype), ((char *)&ctype)[1],
315 ((char *)&ctype)[2], ((char *)&ctype)[3], (int) ctype);
316 dprintf(c->fc, "stype= %c%c%c%c\n",
317 *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
320 if(type == MKTAG('v', 'i', 'd', 'e'))
321 st->codec->codec_type = CODEC_TYPE_VIDEO;
322 else if(type == MKTAG('s', 'o', 'u', 'n'))
323 st->codec->codec_type = CODEC_TYPE_AUDIO;
324 else if(type == MKTAG('m', '1', 'a', ' '))
325 st->codec->codec_id = CODEC_ID_MP2;
326 else if(type == MKTAG('s', 'u', 'b', 'p')) {
327 st->codec->codec_type = CODEC_TYPE_SUBTITLE;
329 get_be32(pb); /* component manufacture */
330 get_be32(pb); /* component flags */
331 get_be32(pb); /* component flags mask */
334 return 0; /* nothing left to read */
336 url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset));
340 static int mp4_read_descr_len(ByteIOContext *pb)
345 int c = get_byte(pb);
346 len = (len << 7) | (c & 0x7f);
353 static int mp4_read_descr(MOVContext *c, ByteIOContext *pb, int *tag)
357 len = mp4_read_descr_len(pb);
358 dprintf(c->fc, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
362 #define MP4ESDescrTag 0x03
363 #define MP4DecConfigDescrTag 0x04
364 #define MP4DecSpecificDescrTag 0x05
366 static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
368 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
371 get_be32(pb); /* version + flags */
372 len = mp4_read_descr(c, pb, &tag);
373 if (tag == MP4ESDescrTag) {
374 get_be16(pb); /* ID */
375 get_byte(pb); /* priority */
377 get_be16(pb); /* ID */
379 len = mp4_read_descr(c, pb, &tag);
380 if (tag == MP4DecConfigDescrTag) {
381 int object_type_id = get_byte(pb);
382 get_byte(pb); /* stream type */
383 get_be24(pb); /* buffer size db */
384 get_be32(pb); /* max bitrate */
385 get_be32(pb); /* avg bitrate */
387 st->codec->codec_id= codec_get_id(ff_mp4_obj_type, object_type_id);
388 dprintf(c->fc, "esds object type id %d\n", object_type_id);
389 len = mp4_read_descr(c, pb, &tag);
390 if (tag == MP4DecSpecificDescrTag) {
391 dprintf(c->fc, "Specific MPEG4 header len=%d\n", len);
392 if((uint64_t)len > (1<<30))
394 st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
395 if (!st->codec->extradata)
396 return AVERROR(ENOMEM);
397 get_buffer(pb, st->codec->extradata, len);
398 st->codec->extradata_size = len;
400 if ((*st->codec->extradata >> 3) == 29) {
401 st->codec->codec_id = CODEC_ID_MP3ON4;
408 /* this atom contains actual media data */
409 static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
411 if(atom.size == 0) /* wrong one (MP4) */
414 return 0; /* now go for moov */
417 static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
419 uint32_t type = get_le32(pb);
421 if (type != MKTAG('q','t',' ',' '))
423 av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
424 get_be32(pb); /* minor version */
425 url_fskip(pb, atom.size - 8);
429 /* this atom should contain all header atoms */
430 static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
432 if (mov_read_default(c, pb, atom) < 0)
434 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
435 /* so we don't parse the whole file if over a network */
437 return 0; /* now go for mdat */
440 static int mov_read_moof(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
442 c->fragment.moof_offset = url_ftell(pb) - 8;
443 dprintf(c->fc, "moof offset %llx\n", c->fragment.moof_offset);
444 return mov_read_default(c, pb, atom);
447 static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
449 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
450 MOVStreamContext *sc = st->priv_data;
451 int version = get_byte(pb);
455 return 1; /* unsupported */
457 get_be24(pb); /* flags */
462 get_be32(pb); /* creation time */
463 get_be32(pb); /* modification time */
466 sc->time_scale = get_be32(pb);
467 st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
469 lang = get_be16(pb); /* language */
470 ff_mov_lang_to_iso639(lang, st->language);
471 get_be16(pb); /* quality */
476 static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
478 int version = get_byte(pb); /* version */
479 get_be24(pb); /* flags */
485 get_be32(pb); /* creation time */
486 get_be32(pb); /* modification time */
488 c->time_scale = get_be32(pb); /* time scale */
490 dprintf(c->fc, "time scale = %i\n", c->time_scale);
492 c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
493 get_be32(pb); /* preferred scale */
495 get_be16(pb); /* preferred volume */
497 url_fskip(pb, 10); /* reserved */
499 url_fskip(pb, 36); /* display matrix */
501 get_be32(pb); /* preview time */
502 get_be32(pb); /* preview duration */
503 get_be32(pb); /* poster time */
504 get_be32(pb); /* selection time */
505 get_be32(pb); /* selection duration */
506 get_be32(pb); /* current time */
507 get_be32(pb); /* next track ID */
512 static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
514 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
516 if((uint64_t)atom.size > (1<<30))
519 // currently SVQ3 decoder expect full STSD header - so let's fake it
520 // this should be fixed and just SMI header should be passed
521 av_free(st->codec->extradata);
522 st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
523 if (!st->codec->extradata)
524 return AVERROR(ENOMEM);
525 st->codec->extradata_size = 0x5a + atom.size;
526 memcpy(st->codec->extradata, "SVQ3", 4); // fake
527 get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
528 dprintf(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
532 static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
534 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
535 int little_endian = get_be16(pb);
538 switch (st->codec->codec_id) {
539 case CODEC_ID_PCM_S24BE:
540 st->codec->codec_id = CODEC_ID_PCM_S24LE;
542 case CODEC_ID_PCM_S32BE:
543 st->codec->codec_id = CODEC_ID_PCM_S32LE;
552 /* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
553 static int mov_read_extradata(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
555 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
556 uint64_t size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
558 if(size > INT_MAX || (uint64_t)atom.size > INT_MAX)
560 buf= av_realloc(st->codec->extradata, size);
563 st->codec->extradata= buf;
564 buf+= st->codec->extradata_size;
565 st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
566 AV_WB32( buf , atom.size + 8);
567 AV_WL32( buf + 4, atom.type);
568 get_buffer(pb, buf + 8, atom.size);
572 static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
574 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
576 if((uint64_t)atom.size > (1<<30))
579 if (st->codec->codec_id == CODEC_ID_QDM2) {
580 // pass all frma atom to codec, needed at least for QDM2
581 av_free(st->codec->extradata);
582 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
583 if (!st->codec->extradata)
584 return AVERROR(ENOMEM);
585 st->codec->extradata_size = atom.size;
586 get_buffer(pb, st->codec->extradata, atom.size);
587 } else if (atom.size > 8) { /* to read frma, esds atoms */
588 if (mov_read_default(c, pb, atom) < 0)
591 url_fskip(pb, atom.size);
596 * This function reads atom content and puts data in extradata without tag
597 * nor size unlike mov_read_extradata.
599 static int mov_read_glbl(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
601 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
603 if((uint64_t)atom.size > (1<<30))
606 av_free(st->codec->extradata);
607 st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
608 if (!st->codec->extradata)
609 return AVERROR(ENOMEM);
610 st->codec->extradata_size = atom.size;
611 get_buffer(pb, st->codec->extradata, atom.size);
615 static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
617 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
618 MOVStreamContext *sc = st->priv_data;
619 unsigned int i, entries;
621 get_byte(pb); /* version */
622 get_be24(pb); /* flags */
624 entries = get_be32(pb);
626 if(entries >= UINT_MAX/sizeof(int64_t))
629 sc->chunk_count = entries;
630 sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
631 if (!sc->chunk_offsets)
633 if (atom.type == MKTAG('s', 't', 'c', 'o')) {
634 for(i=0; i<entries; i++) {
635 sc->chunk_offsets[i] = get_be32(pb);
637 } else if (atom.type == MKTAG('c', 'o', '6', '4')) {
638 for(i=0; i<entries; i++) {
639 sc->chunk_offsets[i] = get_be64(pb);
647 static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
649 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
650 MOVStreamContext *sc = st->priv_data;
651 int entries, frames_per_sample;
653 uint8_t codec_name[32];
655 /* for palette traversal */
656 unsigned int color_depth;
657 unsigned int color_start;
658 unsigned int color_count;
659 unsigned int color_end;
663 const uint8_t *color_table;
664 int j, pseudo_stream_id;
665 unsigned char r, g, b;
667 get_byte(pb); /* version */
668 get_be24(pb); /* flags */
670 entries = get_be32(pb);
672 for(pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) {
673 //Parsing Sample description table
676 MOV_atom_t a = { 0, 0, 0 };
677 offset_t start_pos = url_ftell(pb);
678 int size = get_be32(pb); /* size */
679 format = get_le32(pb); /* data format */
681 get_be32(pb); /* reserved */
682 get_be16(pb); /* reserved */
683 dref_id = get_be16(pb);
685 if (st->codec->codec_tag &&
686 (c->fc->video_codec_id ? codec_get_id(codec_movvideo_tags, format) != c->fc->video_codec_id
687 : st->codec->codec_tag != MKTAG('j', 'p', 'e', 'g'))
689 /* Multiple fourcc, we skip JPEG. This is not correct, we should
690 * export it as a separate AVStream but this needs a few changes
691 * in the MOV demuxer, patch welcome. */
692 url_fskip(pb, size - (url_ftell(pb) - start_pos));
695 sc->pseudo_stream_id= pseudo_stream_id;
696 sc->dref_id= dref_id;
698 st->codec->codec_tag = format;
699 id = codec_get_id(codec_movaudio_tags, format);
700 if (id<=0 && (format&0xFFFF) == 'm' + ('s'<<8))
701 id = codec_get_id(codec_wav_tags, bswap_32(format)&0xFFFF);
703 if (st->codec->codec_type != CODEC_TYPE_VIDEO && id > 0) {
704 st->codec->codec_type = CODEC_TYPE_AUDIO;
705 } else if (st->codec->codec_type != CODEC_TYPE_AUDIO && /* do not overwrite codec type */
706 format && format != MKTAG('m', 'p', '4', 's')) { /* skip old asf mpeg4 tag */
707 id = codec_get_id(codec_movvideo_tags, format);
709 id = codec_get_id(codec_bmp_tags, format);
711 st->codec->codec_type = CODEC_TYPE_VIDEO;
712 else if(st->codec->codec_type == CODEC_TYPE_DATA){
713 id = codec_get_id(ff_codec_movsubtitle_tags, format);
715 st->codec->codec_type = CODEC_TYPE_SUBTITLE;
719 dprintf(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
720 (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff,
721 (format >> 24) & 0xff, st->codec->codec_type);
723 if(st->codec->codec_type==CODEC_TYPE_VIDEO) {
724 st->codec->codec_id = id;
725 get_be16(pb); /* version */
726 get_be16(pb); /* revision level */
727 get_be32(pb); /* vendor */
728 get_be32(pb); /* temporal quality */
729 get_be32(pb); /* spatial quality */
731 st->codec->width = get_be16(pb); /* width */
732 st->codec->height = get_be16(pb); /* height */
734 get_be32(pb); /* horiz resolution */
735 get_be32(pb); /* vert resolution */
736 get_be32(pb); /* data size, always 0 */
737 frames_per_sample = get_be16(pb); /* frames per samples */
739 dprintf(c->fc, "frames/samples = %d\n", frames_per_sample);
741 get_buffer(pb, codec_name, 32); /* codec name, pascal string (FIXME: true for mp4?) */
742 if (codec_name[0] <= 31) {
743 memcpy(st->codec->codec_name, &codec_name[1],codec_name[0]);
744 st->codec->codec_name[codec_name[0]] = 0;
747 st->codec->bits_per_sample = get_be16(pb); /* depth */
748 st->codec->color_table_id = get_be16(pb); /* colortable id */
749 dprintf(c->fc, "depth %d, ctab id %d\n",
750 st->codec->bits_per_sample, st->codec->color_table_id);
751 /* figure out the palette situation */
752 color_depth = st->codec->bits_per_sample & 0x1F;
753 color_greyscale = st->codec->bits_per_sample & 0x20;
755 /* if the depth is 2, 4, or 8 bpp, file is palettized */
756 if ((color_depth == 2) || (color_depth == 4) ||
757 (color_depth == 8)) {
758 if (color_greyscale) {
759 /* compute the greyscale palette */
760 st->codec->bits_per_sample = color_depth;
761 color_count = 1 << color_depth;
763 color_dec = 256 / (color_count - 1);
764 for (j = 0; j < color_count; j++) {
765 r = g = b = color_index;
766 c->palette_control.palette[j] =
767 (r << 16) | (g << 8) | (b);
768 color_index -= color_dec;
772 } else if (st->codec->color_table_id & 0x08) {
773 /* if flag bit 3 is set, use the default palette */
774 color_count = 1 << color_depth;
775 if (color_depth == 2)
776 color_table = ff_qt_default_palette_4;
777 else if (color_depth == 4)
778 color_table = ff_qt_default_palette_16;
780 color_table = ff_qt_default_palette_256;
782 for (j = 0; j < color_count; j++) {
783 r = color_table[j * 4 + 0];
784 g = color_table[j * 4 + 1];
785 b = color_table[j * 4 + 2];
786 c->palette_control.palette[j] =
787 (r << 16) | (g << 8) | (b);
790 /* load the palette from the file */
791 color_start = get_be32(pb);
792 color_count = get_be16(pb);
793 color_end = get_be16(pb);
794 if ((color_start <= 255) &&
795 (color_end <= 255)) {
796 for (j = color_start; j <= color_end; j++) {
797 /* each R, G, or B component is 16 bits;
798 * only use the top 8 bits; skip alpha bytes
808 c->palette_control.palette[j] =
809 (r << 16) | (g << 8) | (b);
813 st->codec->palctrl = &c->palette_control;
814 st->codec->palctrl->palette_changed = 1;
816 st->codec->palctrl = NULL;
817 } else if(st->codec->codec_type==CODEC_TYPE_AUDIO) {
819 uint16_t version = get_be16(pb);
821 st->codec->codec_id = id;
822 get_be16(pb); /* revision level */
823 get_be32(pb); /* vendor */
825 st->codec->channels = get_be16(pb); /* channel count */
826 dprintf(c->fc, "audio channels %d\n", st->codec->channels);
827 st->codec->bits_per_sample = get_be16(pb); /* sample size */
829 sc->audio_cid = get_be16(pb);
830 get_be16(pb); /* packet size = 0 */
832 st->codec->sample_rate = ((get_be32(pb) >> 16));
834 switch (st->codec->codec_id) {
835 case CODEC_ID_PCM_S8:
836 case CODEC_ID_PCM_U8:
837 if (st->codec->bits_per_sample == 16)
838 st->codec->codec_id = CODEC_ID_PCM_S16BE;
840 case CODEC_ID_PCM_S16LE:
841 case CODEC_ID_PCM_S16BE:
842 if (st->codec->bits_per_sample == 8)
843 st->codec->codec_id = CODEC_ID_PCM_S8;
844 else if (st->codec->bits_per_sample == 24)
845 st->codec->codec_id = CODEC_ID_PCM_S24BE;
847 /* set values for old format before stsd version 1 appeared */
849 sc->samples_per_frame = 6;
850 sc->bytes_per_frame = 2*st->codec->channels;
853 sc->samples_per_frame = 6;
854 sc->bytes_per_frame = 1*st->codec->channels;
856 case CODEC_ID_ADPCM_IMA_QT:
857 sc->samples_per_frame = 64;
858 sc->bytes_per_frame = 34*st->codec->channels;
864 //Read QT version 1 fields. In version 0 these do not exist.
865 dprintf(c->fc, "version =%d, isom =%d\n",version,c->isom);
868 sc->samples_per_frame = get_be32(pb);
869 get_be32(pb); /* bytes per packet */
870 sc->bytes_per_frame = get_be32(pb);
871 get_be32(pb); /* bytes per sample */
872 } else if(version==2) {
873 get_be32(pb); /* sizeof struct only */
874 st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
875 st->codec->channels = get_be32(pb);
876 get_be32(pb); /* always 0x7F000000 */
877 get_be32(pb); /* bits per channel if sound is uncompressed */
878 get_be32(pb); /* lcpm format specific flag */
879 get_be32(pb); /* bytes per audio packet if constant */
880 get_be32(pb); /* lpcm frames per audio packet if constant */
884 bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
885 if (bits_per_sample) {
886 st->codec->bits_per_sample = bits_per_sample;
887 sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
889 } else if(st->codec->codec_type==CODEC_TYPE_SUBTITLE){
890 st->codec->codec_id= id;
892 /* other codec type, just skip (rtp, mp4s, tmcd ...) */
893 url_fskip(pb, size - (url_ftell(pb) - start_pos));
895 /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
896 a.size = size - (url_ftell(pb) - start_pos);
898 if (mov_read_default(c, pb, a) < 0)
900 } else if (a.size > 0)
901 url_fskip(pb, a.size);
904 if(st->codec->codec_type==CODEC_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1)
905 st->codec->sample_rate= sc->time_scale;
907 /* special codec parameters handling */
908 switch (st->codec->codec_id) {
909 #ifdef CONFIG_DV_DEMUXER
910 case CODEC_ID_DVAUDIO:
911 c->dv_fctx = av_alloc_format_context();
912 c->dv_demux = dv_init_demux(c->dv_fctx);
914 av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
917 sc->dv_audio_container = 1;
918 st->codec->codec_id = CODEC_ID_PCM_S16LE;
921 /* no ifdef since parameters are always those */
922 case CODEC_ID_AMR_WB:
923 st->codec->sample_rate= 16000;
924 st->codec->channels= 1; /* really needed */
926 case CODEC_ID_AMR_NB:
927 st->codec->sample_rate= 8000;
928 st->codec->channels= 1; /* really needed */
932 st->codec->codec_type = CODEC_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
933 st->need_parsing = AVSTREAM_PARSE_FULL;
935 case CODEC_ID_ADPCM_MS:
936 case CODEC_ID_ADPCM_IMA_WAV:
937 st->codec->block_align = sc->bytes_per_frame;
946 static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
948 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
949 MOVStreamContext *sc = st->priv_data;
950 unsigned int i, entries;
952 get_byte(pb); /* version */
953 get_be24(pb); /* flags */
955 entries = get_be32(pb);
957 if(entries >= UINT_MAX / sizeof(MOV_stsc_t))
960 dprintf(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
962 sc->sample_to_chunk_sz = entries;
963 sc->sample_to_chunk = av_malloc(entries * sizeof(MOV_stsc_t));
964 if (!sc->sample_to_chunk)
966 for(i=0; i<entries; i++) {
967 sc->sample_to_chunk[i].first = get_be32(pb);
968 sc->sample_to_chunk[i].count = get_be32(pb);
969 sc->sample_to_chunk[i].id = get_be32(pb);
974 static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
976 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
977 MOVStreamContext *sc = st->priv_data;
978 unsigned int i, entries;
980 get_byte(pb); /* version */
981 get_be24(pb); /* flags */
983 entries = get_be32(pb);
985 if(entries >= UINT_MAX / sizeof(int))
988 sc->keyframe_count = entries;
990 dprintf(c->fc, "keyframe_count = %d\n", sc->keyframe_count);
992 sc->keyframes = av_malloc(entries * sizeof(int));
995 for(i=0; i<entries; i++) {
996 sc->keyframes[i] = get_be32(pb);
997 //dprintf(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
1002 static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1004 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1005 MOVStreamContext *sc = st->priv_data;
1006 unsigned int i, entries, sample_size;
1008 get_byte(pb); /* version */
1009 get_be24(pb); /* flags */
1011 sample_size = get_be32(pb);
1012 if (!sc->sample_size) /* do not overwrite value computed in stsd */
1013 sc->sample_size = sample_size;
1014 entries = get_be32(pb);
1015 if(entries >= UINT_MAX / sizeof(int))
1018 sc->sample_count = entries;
1022 dprintf(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, sc->sample_count);
1024 sc->sample_sizes = av_malloc(entries * sizeof(int));
1025 if (!sc->sample_sizes)
1027 for(i=0; i<entries; i++)
1028 sc->sample_sizes[i] = get_be32(pb);
1032 static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1034 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1035 MOVStreamContext *sc = st->priv_data;
1036 unsigned int i, entries;
1038 int64_t total_sample_count=0;
1040 get_byte(pb); /* version */
1041 get_be24(pb); /* flags */
1042 entries = get_be32(pb);
1043 if(entries >= UINT_MAX / sizeof(MOV_stts_t))
1046 sc->stts_count = entries;
1047 sc->stts_data = av_malloc(entries * sizeof(MOV_stts_t));
1050 dprintf(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
1054 for(i=0; i<entries; i++) {
1055 int sample_duration;
1058 sample_count=get_be32(pb);
1059 sample_duration = get_be32(pb);
1060 sc->stts_data[i].count= sample_count;
1061 sc->stts_data[i].duration= sample_duration;
1063 sc->time_rate= ff_gcd(sc->time_rate, sample_duration);
1065 dprintf(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
1067 duration+=(int64_t)sample_duration*sample_count;
1068 total_sample_count+=sample_count;
1071 st->nb_frames= total_sample_count;
1073 st->duration= duration;
1077 static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1079 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1080 MOVStreamContext *sc = st->priv_data;
1081 unsigned int i, entries;
1083 get_byte(pb); /* version */
1084 get_be24(pb); /* flags */
1085 entries = get_be32(pb);
1086 if(entries >= UINT_MAX / sizeof(MOV_stts_t))
1089 sc->ctts_count = entries;
1090 sc->ctts_data = av_malloc(entries * sizeof(MOV_stts_t));
1093 dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1095 for(i=0; i<entries; i++) {
1096 int count =get_be32(pb);
1097 int duration =get_be32(pb);
1100 av_log(c->fc, AV_LOG_ERROR, "negative ctts, ignoring\n");
1102 url_fskip(pb, 8 * (entries - i - 1));
1105 sc->ctts_data[i].count = count;
1106 sc->ctts_data[i].duration= duration;
1108 sc->time_rate= ff_gcd(sc->time_rate, duration);
1113 static void mov_build_index(MOVContext *mov, AVStream *st)
1115 MOVStreamContext *sc = st->priv_data;
1116 offset_t current_offset;
1117 int64_t current_dts = 0;
1118 unsigned int stts_index = 0;
1119 unsigned int stsc_index = 0;
1120 unsigned int stss_index = 0;
1123 if (sc->sample_sizes || st->codec->codec_type == CODEC_TYPE_VIDEO ||
1124 sc->audio_cid == -2) {
1125 unsigned int current_sample = 0;
1126 unsigned int stts_sample = 0;
1127 unsigned int keyframe, sample_size;
1128 unsigned int distance = 0;
1129 int key_off = sc->keyframes && sc->keyframes[0] == 1;
1131 st->nb_frames = sc->sample_count;
1132 for (i = 0; i < sc->chunk_count; i++) {
1133 current_offset = sc->chunk_offsets[i];
1134 if (stsc_index + 1 < sc->sample_to_chunk_sz &&
1135 i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1137 for (j = 0; j < sc->sample_to_chunk[stsc_index].count; j++) {
1138 if (current_sample >= sc->sample_count) {
1139 av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1142 keyframe = !sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index];
1145 if (stss_index + 1 < sc->keyframe_count)
1148 sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1149 dprintf(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1150 "size %d, distance %d, keyframe %d\n", st->index, current_sample,
1151 current_offset, current_dts, sample_size, distance, keyframe);
1152 if(sc->sample_to_chunk[stsc_index].id - 1 == sc->pseudo_stream_id)
1153 av_add_index_entry(st, current_offset, current_dts, sample_size, distance,
1154 keyframe ? AVINDEX_KEYFRAME : 0);
1155 current_offset += sample_size;
1156 assert(sc->stts_data[stts_index].duration % sc->time_rate == 0);
1157 current_dts += sc->stts_data[stts_index].duration / sc->time_rate;
1161 if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1167 } else { /* read whole chunk */
1168 unsigned int chunk_samples, chunk_size, chunk_duration;
1169 unsigned int frames = 1;
1170 for (i = 0; i < sc->chunk_count; i++) {
1171 current_offset = sc->chunk_offsets[i];
1172 if (stsc_index + 1 < sc->sample_to_chunk_sz &&
1173 i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1175 chunk_samples = sc->sample_to_chunk[stsc_index].count;
1176 /* get chunk size, beware of alaw/ulaw/mace */
1177 if (sc->samples_per_frame > 0 &&
1178 (chunk_samples * sc->bytes_per_frame % sc->samples_per_frame == 0)) {
1179 if (sc->samples_per_frame < 1024)
1180 chunk_size = chunk_samples * sc->bytes_per_frame / sc->samples_per_frame;
1182 chunk_size = sc->bytes_per_frame;
1183 frames = chunk_samples / sc->samples_per_frame;
1184 chunk_samples = sc->samples_per_frame;
1187 chunk_size = chunk_samples * sc->sample_size;
1188 for (j = 0; j < frames; j++) {
1189 av_add_index_entry(st, current_offset, current_dts, chunk_size, 0, AVINDEX_KEYFRAME);
1190 /* get chunk duration */
1192 while (chunk_samples > 0) {
1193 if (chunk_samples < sc->stts_data[stts_index].count) {
1194 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1195 sc->stts_data[stts_index].count -= chunk_samples;
1198 chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1199 chunk_samples -= sc->stts_data[stts_index].count;
1200 if (stts_index + 1 < sc->stts_count)
1204 current_offset += sc->bytes_per_frame;
1205 dprintf(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", "
1206 "size %d, duration %d\n", st->index, i, current_offset, current_dts,
1207 chunk_size, chunk_duration);
1208 assert(chunk_duration % sc->time_rate == 0);
1209 current_dts += chunk_duration / sc->time_rate;
1214 /* adjust sample count to avindex entries */
1215 sc->sample_count = st->nb_index_entries;
1218 static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1221 MOVStreamContext *sc;
1224 st = av_new_stream(c->fc, c->fc->nb_streams);
1225 if (!st) return AVERROR(ENOMEM);
1226 sc = av_mallocz(sizeof(MOVStreamContext));
1227 if (!sc) return AVERROR(ENOMEM);
1230 st->codec->codec_type = CODEC_TYPE_DATA;
1231 st->start_time = 0; /* XXX: check */
1233 if ((ret = mov_read_default(c, pb, atom)) < 0)
1237 if(!sc->stts_count || !sc->chunk_count || !sc->sample_to_chunk_sz ||
1238 (!sc->sample_size && !sc->sample_count)){
1239 av_log(c->fc, AV_LOG_ERROR, "missing mandatory atoms, broken header\n");
1240 sc->sample_count = 0; //ignore track
1246 sc->time_scale= c->time_scale;
1247 av_set_pts_info(st, 64, sc->time_rate, sc->time_scale);
1249 if (st->codec->codec_type == CODEC_TYPE_AUDIO && sc->stts_count == 1)
1250 st->codec->frame_size = av_rescale(sc->time_rate, st->codec->sample_rate, sc->time_scale);
1252 if(st->duration != AV_NOPTS_VALUE){
1253 assert(st->duration % sc->time_rate == 0);
1254 st->duration /= sc->time_rate;
1256 sc->ffindex = st->index;
1257 mov_build_index(c, st);
1259 if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
1260 if (url_fopen(&sc->pb, sc->drefs[sc->dref_id-1].path, URL_RDONLY) < 0)
1261 av_log(c->fc, AV_LOG_ERROR, "stream %d, error opening external essence: %s\n",
1262 st->index, strerror(errno));
1266 switch (st->codec->codec_id) {
1267 #ifdef CONFIG_H261_DECODER
1270 #ifdef CONFIG_H263_DECODER
1273 #ifdef CONFIG_MPEG4_DECODER
1274 case CODEC_ID_MPEG4:
1276 st->codec->width= 0; /* let decoder init width/height */
1277 st->codec->height= 0;
1279 #ifdef CONFIG_LIBFAAD
1282 #ifdef CONFIG_VORBIS_DECODER
1283 case CODEC_ID_VORBIS:
1285 case CODEC_ID_MP3ON4:
1286 st->codec->sample_rate= 0; /* let decoder init parameters properly */
1290 /* Do not need those anymore. */
1291 av_freep(&sc->chunk_offsets);
1292 av_freep(&sc->sample_to_chunk);
1293 av_freep(&sc->sample_sizes);
1294 av_freep(&sc->keyframes);
1295 av_freep(&sc->stts_data);
1300 static void mov_parse_udta_string(ByteIOContext *pb, char *str, int size)
1302 uint16_t str_size = get_be16(pb); /* string length */;
1304 get_be16(pb); /* skip language */
1305 get_buffer(pb, str, FFMIN(size, str_size));
1308 static int mov_read_udta(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1310 uint64_t end = url_ftell(pb) + atom.size;
1312 while (url_ftell(pb) + 8 < end) {
1313 uint32_t tag_size = get_be32(pb);
1314 uint32_t tag = get_le32(pb);
1315 uint64_t next = url_ftell(pb) + tag_size - 8;
1317 if (next > end) // stop if tag_size is wrong
1321 case MKTAG(0xa9,'n','a','m'):
1322 mov_parse_udta_string(pb, c->fc->title, sizeof(c->fc->title));
1324 case MKTAG(0xa9,'w','r','t'):
1325 mov_parse_udta_string(pb, c->fc->author, sizeof(c->fc->author));
1327 case MKTAG(0xa9,'c','p','y'):
1328 mov_parse_udta_string(pb, c->fc->copyright, sizeof(c->fc->copyright));
1330 case MKTAG(0xa9,'i','n','f'):
1331 mov_parse_udta_string(pb, c->fc->comment, sizeof(c->fc->comment));
1337 url_fseek(pb, next, SEEK_SET);
1343 static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1345 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1346 int version = get_byte(pb);
1348 get_be24(pb); /* flags */
1350 MOV_TRACK_ENABLED 0x0001
1351 MOV_TRACK_IN_MOVIE 0x0002
1352 MOV_TRACK_IN_PREVIEW 0x0004
1353 MOV_TRACK_IN_POSTER 0x0008
1360 get_be32(pb); /* creation time */
1361 get_be32(pb); /* modification time */
1363 st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1364 get_be32(pb); /* reserved */
1365 st->start_time = 0; /* check */
1366 /* highlevel (considering edits) duration in movie timebase */
1367 (version == 1) ? get_be64(pb) : get_be32(pb);
1368 get_be32(pb); /* reserved */
1369 get_be32(pb); /* reserved */
1371 get_be16(pb); /* layer */
1372 get_be16(pb); /* alternate group */
1373 get_be16(pb); /* volume */
1374 get_be16(pb); /* reserved */
1376 url_fskip(pb, 36); /* display matrix */
1378 /* those are fixed-point */
1379 get_be32(pb); /* track width */
1380 get_be32(pb); /* track height */
1385 static int mov_read_tfhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1387 MOVFragment *frag = &c->fragment;
1388 MOVTrackExt *trex = NULL;
1389 int flags, track_id, i;
1391 get_byte(pb); /* version */
1392 flags = get_be24(pb);
1394 track_id = get_be32(pb);
1395 if (!track_id || track_id > c->fc->nb_streams)
1397 frag->track_id = track_id;
1398 for (i = 0; i < c->trex_count; i++)
1399 if (c->trex_data[i].track_id == frag->track_id) {
1400 trex = &c->trex_data[i];
1404 av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
1408 if (flags & 0x01) frag->base_data_offset = get_be64(pb);
1409 else frag->base_data_offset = frag->moof_offset;
1410 if (flags & 0x02) frag->stsd_id = get_be32(pb);
1411 else frag->stsd_id = trex->stsd_id;
1413 frag->duration = flags & 0x08 ? get_be32(pb) : trex->duration;
1414 frag->size = flags & 0x10 ? get_be32(pb) : trex->size;
1415 frag->flags = flags & 0x20 ? get_be32(pb) : trex->flags;
1416 dprintf(c->fc, "frag flags 0x%x\n", frag->flags);
1420 static int mov_read_trex(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1424 if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
1426 c->trex_data = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data));
1428 return AVERROR(ENOMEM);
1429 trex = &c->trex_data[c->trex_count++];
1430 get_byte(pb); /* version */
1431 get_be24(pb); /* flags */
1432 trex->track_id = get_be32(pb);
1433 trex->stsd_id = get_be32(pb);
1434 trex->duration = get_be32(pb);
1435 trex->size = get_be32(pb);
1436 trex->flags = get_be32(pb);
1440 static int mov_read_trun(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1442 MOVFragment *frag = &c->fragment;
1443 AVStream *st = c->fc->streams[frag->track_id-1];
1444 MOVStreamContext *sc = st->priv_data;
1447 int data_offset = 0;
1448 unsigned entries, first_sample_flags = frag->flags;
1449 int flags, distance, i;
1451 if (sc->pseudo_stream_id+1 != frag->stsd_id)
1453 if (!st->nb_index_entries)
1455 get_byte(pb); /* version */
1456 flags = get_be24(pb);
1457 entries = get_be32(pb);
1458 dprintf(c->fc, "flags 0x%x entries %d\n", flags, entries);
1459 if (flags & 0x001) data_offset = get_be32(pb);
1460 if (flags & 0x004) first_sample_flags = get_be32(pb);
1461 if (flags & 0x800) {
1462 if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
1464 sc->ctts_data = av_realloc(sc->ctts_data,
1465 (entries+sc->ctts_count)*sizeof(*sc->ctts_data));
1467 return AVERROR(ENOMEM);
1470 offset = frag->base_data_offset + data_offset;
1472 dprintf(c->fc, "first sample flags 0x%x\n", first_sample_flags);
1473 for (i = 0; i < entries; i++) {
1474 unsigned sample_size = frag->size;
1475 int sample_flags = i ? frag->flags : first_sample_flags;
1476 unsigned sample_duration = frag->duration;
1479 if (flags & 0x100) sample_duration = get_be32(pb);
1480 if (flags & 0x200) sample_size = get_be32(pb);
1481 if (flags & 0x400) sample_flags = get_be32(pb);
1482 if (flags & 0x800) {
1483 sc->ctts_data[sc->ctts_count].count = 1;
1484 sc->ctts_data[sc->ctts_count].duration = get_be32(pb);
1487 if ((keyframe = st->codec->codec_type == CODEC_TYPE_AUDIO ||
1488 (flags & 0x004 && !i && !sample_flags) || sample_flags & 0x2000000))
1490 av_add_index_entry(st, offset, dts, sample_size, distance,
1491 keyframe ? AVINDEX_KEYFRAME : 0);
1492 dprintf(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
1493 "size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
1494 offset, dts, sample_size, distance, keyframe);
1496 assert(sample_duration % sc->time_rate == 0);
1497 dts += sample_duration / sc->time_rate;
1498 offset += sample_size;
1500 frag->moof_offset = offset;
1501 sc->sample_count = st->nb_index_entries;
1506 /* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1507 /* like the files created with Adobe Premiere 5.0, for samples see */
1508 /* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1509 static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1514 return 0; /* continue */
1515 if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1516 url_fskip(pb, atom.size - 4);
1519 atom.type = get_le32(pb);
1522 if (atom.type != MKTAG('m', 'd', 'a', 't')) {
1523 url_fskip(pb, atom.size);
1526 err = mov_read_mdat(c, pb, atom);
1530 static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1535 uint8_t *moov_data; /* uncompressed data */
1536 long cmov_len, moov_len;
1539 get_be32(pb); /* dcom atom */
1540 if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1542 if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
1543 av_log(NULL, AV_LOG_ERROR, "unknown compression for cmov atom !");
1546 get_be32(pb); /* cmvd atom */
1547 if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1549 moov_len = get_be32(pb); /* uncompressed size */
1550 cmov_len = atom.size - 6 * 4;
1552 cmov_data = av_malloc(cmov_len);
1555 moov_data = av_malloc(moov_len);
1560 get_buffer(pb, cmov_data, cmov_len);
1561 if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1563 if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
1565 atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1567 atom.size = moov_len;
1569 // { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1571 ret = mov_read_default(c, &ctx, atom);
1576 av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
1581 /* edit list atom */
1582 static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1584 MOVStreamContext *sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
1587 get_byte(pb); /* version */
1588 get_be24(pb); /* flags */
1589 edit_count= sc->edit_count = get_be32(pb); /* entries */
1591 for(i=0; i<edit_count; i++){
1593 get_be32(pb); /* Track duration */
1594 time = get_be32(pb); /* Media time */
1595 get_be32(pb); /* Media rate */
1597 av_log(c->fc, AV_LOG_WARNING, "edit list not starting at 0, "
1598 "a/v desync might occur, patch welcome\n");
1600 dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, sc->edit_count);
1604 static const MOVParseTableEntry mov_default_parse_table[] = {
1605 { MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1606 { MKTAG( 'c', 't', 't', 's' ), mov_read_ctts }, /* composition time to sample */
1607 { MKTAG( 'd', 'i', 'n', 'f' ), mov_read_default },
1608 { MKTAG( 'd', 'r', 'e', 'f' ), mov_read_dref },
1609 { MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
1610 { MKTAG( 'e', 'l', 's', 't' ), mov_read_elst },
1611 { MKTAG( 'e', 'n', 'd', 'a' ), mov_read_enda },
1612 { MKTAG( 'f', 'i', 'e', 'l' ), mov_read_extradata },
1613 { MKTAG( 'f', 't', 'y', 'p' ), mov_read_ftyp },
1614 { MKTAG( 'g', 'l', 'b', 'l' ), mov_read_glbl },
1615 { MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1616 { MKTAG( 'j', 'p', '2', 'h' ), mov_read_extradata },
1617 { MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1618 { MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1619 { MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1620 { MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1621 { MKTAG( 'm', 'o', 'o', 'f' ), mov_read_moof },
1622 { MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1623 { MKTAG( 'm', 'v', 'e', 'x' ), mov_read_default },
1624 { MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1625 { MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorenson extension ??? */
1626 { MKTAG( 'a', 'l', 'a', 'c' ), mov_read_extradata }, /* alac specific atom */
1627 { MKTAG( 'a', 'v', 'c', 'C' ), mov_read_glbl },
1628 { MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1629 { MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1630 { MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1631 { MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1632 { MKTAG( 's', 't', 's', 's' ), mov_read_stss }, /* sync sample */
1633 { MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1634 { MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1635 { MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1636 { MKTAG( 't', 'f', 'h', 'd' ), mov_read_tfhd }, /* track fragment header */
1637 { MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1638 { MKTAG( 't', 'r', 'a', 'f' ), mov_read_default },
1639 { MKTAG( 't', 'r', 'e', 'x' ), mov_read_trex },
1640 { MKTAG( 't', 'r', 'u', 'n' ), mov_read_trun },
1641 { MKTAG( 'u', 'd', 't', 'a' ), mov_read_udta },
1642 { MKTAG( 'w', 'a', 'v', 'e' ), mov_read_wave },
1643 { MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1644 { MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1645 { MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
1649 static int mov_probe(AVProbeData *p)
1651 unsigned int offset;
1655 /* check file header */
1658 /* ignore invalid offset */
1659 if ((offset + 8) > (unsigned int)p->buf_size)
1661 tag = AV_RL32(p->buf + offset + 4);
1663 /* check for obvious tags */
1664 case MKTAG( 'j', 'P', ' ', ' ' ): /* jpeg 2000 signature */
1665 case MKTAG( 'm', 'o', 'o', 'v' ):
1666 case MKTAG( 'm', 'd', 'a', 't' ):
1667 case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
1668 case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
1669 return AVPROBE_SCORE_MAX;
1670 /* those are more common words, so rate then a bit less */
1671 case MKTAG( 'e', 'd', 'i', 'w' ): /* xdcam files have reverted first tags */
1672 case MKTAG( 'w', 'i', 'd', 'e' ):
1673 case MKTAG( 'f', 'r', 'e', 'e' ):
1674 case MKTAG( 'j', 'u', 'n', 'k' ):
1675 case MKTAG( 'p', 'i', 'c', 't' ):
1676 return AVPROBE_SCORE_MAX - 5;
1677 case MKTAG(0x82,0x82,0x7f,0x7d ):
1678 case MKTAG( 'f', 't', 'y', 'p' ):
1679 case MKTAG( 's', 'k', 'i', 'p' ):
1680 case MKTAG( 'u', 'u', 'i', 'd' ):
1681 offset = AV_RB32(p->buf+offset) + offset;
1682 /* if we only find those cause probedata is too small at least rate them */
1683 score = AVPROBE_SCORE_MAX - 50;
1686 /* unrecognized tag */
1693 static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
1695 MOVContext *mov = s->priv_data;
1696 ByteIOContext *pb = s->pb;
1698 MOV_atom_t atom = { 0, 0, 0 };
1701 /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1702 if(!url_is_streamed(pb))
1703 atom.size = url_fsize(pb);
1705 atom.size = INT64_MAX;
1707 /* check MOV header */
1708 err = mov_read_default(mov, pb, atom);
1709 if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
1710 av_log(s, AV_LOG_ERROR, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%"PRId64"\n",
1711 err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1714 dprintf(mov->fc, "on_parse_exit_offset=%d\n", (int) url_ftell(pb));
1719 static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
1721 MOVContext *mov = s->priv_data;
1722 MOVStreamContext *sc = 0;
1723 AVIndexEntry *sample = 0;
1724 int64_t best_dts = INT64_MAX;
1727 for (i = 0; i < s->nb_streams; i++) {
1728 AVStream *st = s->streams[i];
1729 MOVStreamContext *msc = st->priv_data;
1730 if (st->discard != AVDISCARD_ALL && msc->pb && msc->current_sample < msc->sample_count) {
1731 AVIndexEntry *current_sample = &st->index_entries[msc->current_sample];
1732 int64_t dts = av_rescale(current_sample->timestamp * (int64_t)msc->time_rate,
1733 AV_TIME_BASE, msc->time_scale);
1734 dprintf(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
1735 if (!sample || (url_is_streamed(s->pb) && current_sample->pos < sample->pos) ||
1736 (!url_is_streamed(s->pb) &&
1737 ((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
1738 ((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
1739 (FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
1740 sample = current_sample;
1747 mov->found_mdat = 0;
1748 if (!url_is_streamed(s->pb) ||
1749 mov_read_default(mov, s->pb, (MOV_atom_t){ 0, 0, INT64_MAX }) < 0 ||
1752 dprintf(s, "read fragments, offset 0x%llx\n", url_ftell(s->pb));
1755 /* must be done just before reading, to avoid infinite loop on sample */
1756 sc->current_sample++;
1757 if (url_fseek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
1758 av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
1759 sc->ffindex, sample->pos);
1762 av_get_packet(sc->pb, pkt, sample->size);
1763 #ifdef CONFIG_DV_DEMUXER
1764 if (mov->dv_demux && sc->dv_audio_container) {
1765 dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
1768 if (dv_get_packet(mov->dv_demux, pkt) < 0)
1772 pkt->stream_index = sc->ffindex;
1773 pkt->dts = sample->timestamp;
1774 if (sc->ctts_data) {
1775 assert(sc->ctts_data[sc->sample_to_ctime_index].duration % sc->time_rate == 0);
1776 pkt->pts = pkt->dts + sc->ctts_data[sc->sample_to_ctime_index].duration / sc->time_rate;
1777 /* update ctts context */
1778 sc->sample_to_ctime_sample++;
1779 if (sc->sample_to_ctime_index < sc->ctts_count &&
1780 sc->ctts_data[sc->sample_to_ctime_index].count == sc->sample_to_ctime_sample) {
1781 sc->sample_to_ctime_index++;
1782 sc->sample_to_ctime_sample = 0;
1785 pkt->pts = pkt->dts;
1787 pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? PKT_FLAG_KEY : 0;
1788 pkt->pos = sample->pos;
1789 dprintf(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n",
1790 pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
1794 static int mov_seek_stream(AVStream *st, int64_t timestamp, int flags)
1796 MOVStreamContext *sc = st->priv_data;
1797 int sample, time_sample;
1800 sample = av_index_search_timestamp(st, timestamp, flags);
1801 dprintf(st->codec, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
1802 if (sample < 0) /* not sure what to do */
1804 sc->current_sample = sample;
1805 dprintf(st->codec, "stream %d, found sample %d\n", st->index, sc->current_sample);
1806 /* adjust ctts index */
1807 if (sc->ctts_data) {
1809 for (i = 0; i < sc->ctts_count; i++) {
1810 int next = time_sample + sc->ctts_data[i].count;
1811 if (next > sc->current_sample) {
1812 sc->sample_to_ctime_index = i;
1813 sc->sample_to_ctime_sample = sc->current_sample - time_sample;
1822 static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
1825 int64_t seek_timestamp, timestamp;
1829 if (stream_index >= s->nb_streams)
1832 st = s->streams[stream_index];
1833 sample = mov_seek_stream(st, sample_time, flags);
1837 /* adjust seek timestamp to found sample timestamp */
1838 seek_timestamp = st->index_entries[sample].timestamp;
1840 for (i = 0; i < s->nb_streams; i++) {
1842 if (stream_index == i || st->discard == AVDISCARD_ALL)
1845 timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
1846 mov_seek_stream(st, timestamp, flags);
1851 static int mov_read_close(AVFormatContext *s)
1854 MOVContext *mov = s->priv_data;
1855 for(i=0; i<s->nb_streams; i++) {
1856 MOVStreamContext *sc = s->streams[i]->priv_data;
1857 av_freep(&sc->ctts_data);
1858 for (j=0; j<sc->drefs_count; j++)
1859 av_freep(&sc->drefs[j].path);
1860 av_freep(&sc->drefs);
1861 if (sc->pb && sc->pb != s->pb)
1865 for(i=0; i<mov->dv_fctx->nb_streams; i++){
1866 av_freep(&mov->dv_fctx->streams[i]->codec);
1867 av_freep(&mov->dv_fctx->streams[i]);
1869 av_freep(&mov->dv_fctx);
1870 av_freep(&mov->dv_demux);
1872 av_freep(&mov->trex_data);
1876 AVInputFormat mov_demuxer = {
1877 "mov,mp4,m4a,3gp,3g2,mj2",
1878 "QuickTime/MPEG4/Motion JPEG 2000 format",