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ffmpeg / libavformat / mov.c @ d2ace376

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1 6cea494e Zdenek Kabelac
/*
2 7fbde343 Aurelien Jacobs
 * MOV demuxer
3 19720f15 Fabrice Bellard
 * Copyright (c) 2001 Fabrice Bellard.
4 6cea494e Zdenek Kabelac
 *
5 b78e7197 Diego Biurrun
 * This file is part of FFmpeg.
6
 *
7
 * FFmpeg is free software; you can redistribute it and/or
8 19720f15 Fabrice Bellard
 * modify it under the terms of the GNU Lesser General Public
9
 * License as published by the Free Software Foundation; either
10 b78e7197 Diego Biurrun
 * version 2.1 of the License, or (at your option) any later version.
11 6cea494e Zdenek Kabelac
 *
12 b78e7197 Diego Biurrun
 * FFmpeg is distributed in the hope that it will be useful,
13 6cea494e Zdenek Kabelac
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 19720f15 Fabrice Bellard
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15
 * Lesser General Public License for more details.
16 6cea494e Zdenek Kabelac
 *
17 19720f15 Fabrice Bellard
 * You should have received a copy of the GNU Lesser General Public
18 b78e7197 Diego Biurrun
 * License along with FFmpeg; if not, write to the Free Software
19 5509bffa Diego Biurrun
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 6cea494e Zdenek Kabelac
 */
21 d957696f Michael Niedermayer
22
#include <limits.h>
23 115329f1 Diego Biurrun
24 bfc2a19d Baptiste Coudurier
//#define DEBUG
25 4e5ef14f Baptiste Coudurier
26 6cea494e Zdenek Kabelac
#include "avformat.h"
27 9d9f4119 Måns Rullgård
#include "riff.h"
28 e40ee6a2 Baptiste Coudurier
#include "isom.h"
29 b60c0454 Baptiste Coudurier
#include "dv.h"
30 6cea494e Zdenek Kabelac
31 0147f198 François Revol
#ifdef CONFIG_ZLIB
32
#include <zlib.h>
33
#endif
34
35 6cea494e Zdenek Kabelac
/*
36
 * First version by Francois Revol revol@free.fr
37 115329f1 Diego Biurrun
 * Seek function by Gael Chardon gael.dev@4now.net
38 5ca1d879 Zdenek Kabelac
 *
39 6cea494e Zdenek Kabelac
 * Features and limitations:
40 5ca1d879 Zdenek Kabelac
 * - reads most of the QT files I have (at least the structure),
41 6cea494e Zdenek Kabelac
 *   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 :-)
43 5ca1d879 Zdenek Kabelac
 *
44 6cea494e Zdenek Kabelac
 * Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/
45
 * when coding this :) (it's a writer anyway)
46 5ca1d879 Zdenek Kabelac
 *
47 6cea494e Zdenek Kabelac
 * Reference documents:
48
 * http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
49
 * Apple:
50 baf25c9d Gael Chardon
 *  http://developer.apple.com/documentation/QuickTime/QTFF/
51 15c8dbe7 Sebastien Bechet
 *  http://developer.apple.com/documentation/QuickTime/QTFF/qtff.pdf
52 6cea494e Zdenek Kabelac
 * QuickTime is a trademark of Apple (AFAIK :))
53
 */
54
55 b595afaa Mike Melanson
#include "qtpalette.h"
56
57 baf25c9d Gael Chardon
58 cd7352d5 Michael Niedermayer
#undef NDEBUG
59
#include <assert.h>
60
61 6cea494e Zdenek Kabelac
/* 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
64
 */
65
66 e23848a4 Baptiste Coudurier
typedef struct {
67 1c02d96f Baptiste Coudurier
    int first;
68
    int count;
69
    int id;
70 e23848a4 Baptiste Coudurier
} MOV_stsc_t;
71 6cea494e Zdenek Kabelac
72 5cd62665 Zdenek Kabelac
typedef struct {
73 5ca1d879 Zdenek Kabelac
    uint32_t type;
74
    int64_t offset;
75
    int64_t size; /* total size (excluding the size and type fields) */
76
} MOV_atom_t;
77
78 e23848a4 Baptiste Coudurier
typedef struct {
79 b72708f8 Baptiste Coudurier
    offset_t offset;
80
    int64_t size;
81 e23848a4 Baptiste Coudurier
} MOV_mdat_t;
82 b72708f8 Baptiste Coudurier
83 b6a17df4 Zdenek Kabelac
struct MOVParseTableEntry;
84
85 6cea494e Zdenek Kabelac
typedef struct MOVStreamContext {
86
    int ffindex; /* the ffmpeg stream id */
87 1c02d96f Baptiste Coudurier
    int next_chunk;
88 44d3fea5 Baptiste Coudurier
    unsigned int chunk_count;
89 0c1a9eda Zdenek Kabelac
    int64_t *chunk_offsets;
90 44d3fea5 Baptiste Coudurier
    unsigned int stts_count;
91 e23848a4 Baptiste Coudurier
    MOV_stts_t *stts_data;
92 44d3fea5 Baptiste Coudurier
    unsigned int ctts_count;
93 e23848a4 Baptiste Coudurier
    MOV_stts_t *ctts_data;
94 44d3fea5 Baptiste Coudurier
    unsigned int edit_count; /* number of 'edit' (elst atom) */
95
    unsigned int sample_to_chunk_sz;
96 e23848a4 Baptiste Coudurier
    MOV_stsc_t *sample_to_chunk;
97 c4ac052b Michael Niedermayer
    int sample_to_ctime_index;
98
    int sample_to_ctime_sample;
99 44d3fea5 Baptiste Coudurier
    unsigned int sample_size;
100
    unsigned int sample_count;
101 1c02d96f Baptiste Coudurier
    int *sample_sizes;
102 44d3fea5 Baptiste Coudurier
    unsigned int keyframe_count;
103 1c02d96f Baptiste Coudurier
    int *keyframes;
104 5cd62665 Zdenek Kabelac
    int time_scale;
105 cd7352d5 Michael Niedermayer
    int time_rate;
106 1c02d96f Baptiste Coudurier
    int current_sample;
107 e14f79ed Baptiste Coudurier
    unsigned int bytes_per_frame;
108
    unsigned int samples_per_frame;
109 b60c0454 Baptiste Coudurier
    int dv_audio_container;
110 6cea494e Zdenek Kabelac
} MOVStreamContext;
111
112
typedef struct MOVContext {
113
    AVFormatContext *fc;
114 5cd62665 Zdenek Kabelac
    int time_scale;
115 7e815047 Baptiste Coudurier
    int64_t duration; /* duration of the longest track */
116 6cea494e Zdenek Kabelac
    int found_moov; /* when both 'moov' and 'mdat' sections has been found */
117
    int found_mdat; /* we suppose we have enough data to read the file */
118 0c1a9eda Zdenek Kabelac
    int64_t mdat_offset;
119 6cea494e Zdenek Kabelac
    int total_streams;
120
    MOVStreamContext *streams[MAX_STREAMS];
121 5cd62665 Zdenek Kabelac
122 b6a17df4 Zdenek Kabelac
    const struct MOVParseTableEntry *parse_table; /* could be eventually used to change the table */
123
    /* NOTE: for recursion save to/ restore from local variable! */
124 b595afaa Mike Melanson
125
    AVPaletteControl palette_control;
126 e23848a4 Baptiste Coudurier
    MOV_mdat_t *mdat_list;
127 b72708f8 Baptiste Coudurier
    int mdat_count;
128 b60c0454 Baptiste Coudurier
    DVDemuxContext *dv_demux;
129
    AVFormatContext *dv_fctx;
130 152e9a43 Baptiste Coudurier
    int isom; /* 1 if file is ISO Media (mp4/3gp) */
131 6cea494e Zdenek Kabelac
} MOVContext;
132
133
134
/* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
135
136
/* those functions parse an atom */
137
/* return code:
138
 1: found what I wanted, exit
139
 0: continue to parse next atom
140
 -1: error occured, exit
141
 */
142 5ca1d879 Zdenek Kabelac
typedef int (*mov_parse_function)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
143 6cea494e Zdenek Kabelac
144
/* links atom IDs to parse functions */
145
typedef struct MOVParseTableEntry {
146 0c1a9eda Zdenek Kabelac
    uint32_t type;
147 6cea494e Zdenek Kabelac
    mov_parse_function func;
148
} MOVParseTableEntry;
149
150 5ca1d879 Zdenek Kabelac
static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
151 6cea494e Zdenek Kabelac
{
152 b6a17df4 Zdenek Kabelac
    int64_t total_size = 0;
153 5ca1d879 Zdenek Kabelac
    MOV_atom_t a;
154 6cea494e Zdenek Kabelac
    int i;
155
    int err = 0;
156 5ca1d879 Zdenek Kabelac
157
    a.offset = atom.offset;
158 6cea494e Zdenek Kabelac
159 9ed83b0a Zdenek Kabelac
    if (atom.size < 0)
160 fa22ca22 Baptiste Coudurier
        atom.size = INT64_MAX;
161 5ca1d879 Zdenek Kabelac
    while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
162 bb270c08 Diego Biurrun
        a.size = atom.size;
163
        a.type=0L;
164 5ca1d879 Zdenek Kabelac
        if(atom.size >= 8) {
165 bb270c08 Diego Biurrun
            a.size = get_be32(pb);
166 5ca1d879 Zdenek Kabelac
            a.type = get_le32(pb);
167 6cea494e Zdenek Kabelac
        }
168 bb270c08 Diego Biurrun
        total_size += 8;
169 5ca1d879 Zdenek Kabelac
        a.offset += 8;
170 318c5e05 Michel Bardiaux
        dprintf(c->fc, "type: %08x  %.4s  sz: %"PRIx64"  %"PRIx64"   %"PRIx64"\n", a.type, (char*)&a.type, a.size, atom.size, total_size);
171 5ca1d879 Zdenek Kabelac
        if (a.size == 1) { /* 64 bit extended size */
172 bb270c08 Diego Biurrun
            a.size = get_be64(pb) - 8;
173 5ca1d879 Zdenek Kabelac
            a.offset += 8;
174
            total_size += 8;
175 6cea494e Zdenek Kabelac
        }
176 bb270c08 Diego Biurrun
        if (a.size == 0) {
177
            a.size = atom.size - total_size;
178
            if (a.size <= 8)
179 5cd62665 Zdenek Kabelac
                break;
180 bb270c08 Diego Biurrun
        }
181
        a.size -= 8;
182 62b6498d Baptiste Coudurier
        if(a.size < 0 || a.size > atom.size - total_size)
183 568e18b1 Michael Niedermayer
            break;
184 115329f1 Diego Biurrun
185 11979c46 Baptiste Coudurier
        for (i = 0; c->parse_table[i].type != 0L
186
             && c->parse_table[i].type != a.type; i++)
187
            /* empty */;
188
189 bb270c08 Diego Biurrun
        if (c->parse_table[i].type == 0) { /* skip leaf atoms data */
190 5ca1d879 Zdenek Kabelac
            url_fskip(pb, a.size);
191 bb270c08 Diego Biurrun
        } else {
192 5c72cad8 Baptiste Coudurier
            offset_t start_pos = url_ftell(pb);
193
            int64_t left;
194 bb270c08 Diego Biurrun
            err = (c->parse_table[i].func)(c, pb, a);
195 5c72cad8 Baptiste Coudurier
            left = a.size - url_ftell(pb) + start_pos;
196
            if (left > 0) /* skip garbage at atom end */
197
                url_fskip(pb, left);
198 bb270c08 Diego Biurrun
        }
199 6cea494e Zdenek Kabelac
200 bb270c08 Diego Biurrun
        a.offset += a.size;
201 5ca1d879 Zdenek Kabelac
        total_size += a.size;
202 6cea494e Zdenek Kabelac
    }
203
204 5ca1d879 Zdenek Kabelac
    if (!err && total_size < atom.size && atom.size < 0x7ffff) {
205
        url_fskip(pb, atom.size - total_size);
206 5cd62665 Zdenek Kabelac
    }
207
208 6cea494e Zdenek Kabelac
    return err;
209
}
210
211 5ca1d879 Zdenek Kabelac
static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
212 6cea494e Zdenek Kabelac
{
213 5ca1d879 Zdenek Kabelac
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
214 0c1a9eda Zdenek Kabelac
    uint32_t type;
215
    uint32_t ctype;
216 b6a17df4 Zdenek Kabelac
217 6cea494e Zdenek Kabelac
    get_byte(pb); /* version */
218
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
219
220
    /* component type */
221
    ctype = get_le32(pb);
222
    type = get_le32(pb); /* component subtype */
223
224 1c02d96f Baptiste Coudurier
    dprintf(c->fc, "ctype= %c%c%c%c (0x%08x)\n", *((char *)&ctype), ((char *)&ctype)[1], ((char *)&ctype)[2], ((char *)&ctype)[3], (int) ctype);
225 318c5e05 Michel Bardiaux
    dprintf(c->fc, "stype= %c%c%c%c\n", *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
226 152e9a43 Baptiste Coudurier
    if(!ctype)
227
        c->isom = 1;
228 73920f07 Baptiste Coudurier
    if(type == MKTAG('v', 'i', 'd', 'e'))
229
        st->codec->codec_type = CODEC_TYPE_VIDEO;
230
    else if(type == MKTAG('s', 'o', 'u', 'n'))
231
        st->codec->codec_type = CODEC_TYPE_AUDIO;
232 95a07973 Baptiste Coudurier
    else if(type == MKTAG('m', '1', 'a', ' '))
233
        st->codec->codec_id = CODEC_ID_MP2;
234 8cb97693 Baptiste Coudurier
    else if(type == MKTAG('s', 'u', 'b', 'p')) {
235
        st->codec->codec_type = CODEC_TYPE_SUBTITLE;
236
        st->codec->codec_id = CODEC_ID_DVD_SUBTITLE;
237
    }
238 6cea494e Zdenek Kabelac
    get_be32(pb); /* component  manufacture */
239
    get_be32(pb); /* component flags */
240
    get_be32(pb); /* component flags mask */
241
242 5ca1d879 Zdenek Kabelac
    if(atom.size <= 24)
243 6cea494e Zdenek Kabelac
        return 0; /* nothing left to read */
244 5cd62665 Zdenek Kabelac
245 3c13647a Cedric Vincent
    url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset));
246 6cea494e Zdenek Kabelac
    return 0;
247
}
248
249 9e40addd Baptiste Coudurier
static int mp4_read_descr_len(ByteIOContext *pb)
250 0e7eed09 Fabrice Bellard
{
251 5cd62665 Zdenek Kabelac
    int len = 0;
252 5ca1d879 Zdenek Kabelac
    int count = 4;
253
    while (count--) {
254 5cd62665 Zdenek Kabelac
        int c = get_byte(pb);
255 bb270c08 Diego Biurrun
        len = (len << 7) | (c & 0x7f);
256
        if (!(c & 0x80))
257
            break;
258 0e7eed09 Fabrice Bellard
    }
259
    return len;
260
}
261
262 9e40addd Baptiste Coudurier
static int mp4_read_descr(MOVContext *c, ByteIOContext *pb, int *tag)
263 0e7eed09 Fabrice Bellard
{
264
    int len;
265
    *tag = get_byte(pb);
266 9e40addd Baptiste Coudurier
    len = mp4_read_descr_len(pb);
267 318c5e05 Michel Bardiaux
    dprintf(c->fc, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
268 0e7eed09 Fabrice Bellard
    return len;
269
}
270
271 0b07ac42 Baptiste Coudurier
#define MP4ESDescrTag                   0x03
272
#define MP4DecConfigDescrTag            0x04
273
#define MP4DecSpecificDescrTag          0x05
274
275 5ca1d879 Zdenek Kabelac
static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
276 5cd62665 Zdenek Kabelac
{
277
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
278
    int tag, len;
279 b6a17df4 Zdenek Kabelac
280 5cd62665 Zdenek Kabelac
    get_be32(pb); /* version + flags */
281 9e40addd Baptiste Coudurier
    len = mp4_read_descr(c, pb, &tag);
282 5cd62665 Zdenek Kabelac
    if (tag == MP4ESDescrTag) {
283 bb270c08 Diego Biurrun
        get_be16(pb); /* ID */
284
        get_byte(pb); /* priority */
285 5cd62665 Zdenek Kabelac
    } else
286 bb270c08 Diego Biurrun
        get_be16(pb); /* ID */
287 5cd62665 Zdenek Kabelac
288 9e40addd Baptiste Coudurier
    len = mp4_read_descr(c, pb, &tag);
289 5cd62665 Zdenek Kabelac
    if (tag == MP4DecConfigDescrTag) {
290 0b07ac42 Baptiste Coudurier
        int object_type_id = get_byte(pb);
291
        get_byte(pb); /* stream type */
292
        get_be24(pb); /* buffer size db */
293
        get_be32(pb); /* max bitrate */
294
        get_be32(pb); /* avg bitrate */
295
296
        st->codec->codec_id= codec_get_id(ff_mp4_obj_type, object_type_id);
297
        dprintf(c->fc, "esds object type id %d\n", object_type_id);
298 9e40addd Baptiste Coudurier
        len = mp4_read_descr(c, pb, &tag);
299 bb270c08 Diego Biurrun
        if (tag == MP4DecSpecificDescrTag) {
300 318c5e05 Michel Bardiaux
            dprintf(c->fc, "Specific MPEG4 header len=%d\n", len);
301 9a630c25 Baptiste Coudurier
            st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
302 bb270c08 Diego Biurrun
            if (st->codec->extradata) {
303
                get_buffer(pb, st->codec->extradata, len);
304
                st->codec->extradata_size = len;
305 e31bd3e3 Baptiste Coudurier
                /* from mplayer */
306 b95d44b6 Baptiste Coudurier
                if ((*st->codec->extradata >> 3) == 29) {
307 e31bd3e3 Baptiste Coudurier
                    st->codec->codec_id = CODEC_ID_MP3ON4;
308
                }
309 bb270c08 Diego Biurrun
            }
310
        }
311 5cd62665 Zdenek Kabelac
    }
312
    return 0;
313
}
314
315 5ca1d879 Zdenek Kabelac
/* this atom contains actual media data */
316
static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
317 6cea494e Zdenek Kabelac
{
318 5ca1d879 Zdenek Kabelac
    if(atom.size == 0) /* wrong one (MP4) */
319
        return 0;
320 b72708f8 Baptiste Coudurier
    c->mdat_list = av_realloc(c->mdat_list, (c->mdat_count + 1) * sizeof(*c->mdat_list));
321
    c->mdat_list[c->mdat_count].offset = atom.offset;
322
    c->mdat_list[c->mdat_count].size = atom.size;
323
    c->mdat_count++;
324 5ca1d879 Zdenek Kabelac
    c->found_mdat=1;
325
    c->mdat_offset = atom.offset;
326
    if(c->found_moov)
327
        return 1; /* found both, just go */
328
    url_fskip(pb, atom.size);
329
    return 0; /* now go for moov */
330
}
331
332 4ea28253 Baptiste Coudurier
static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
333
{
334
    uint32_t type = get_le32(pb);
335
336 152e9a43 Baptiste Coudurier
    if (type != MKTAG('q','t',' ',' '))
337
        c->isom = 1;
338 a512446e Baptiste Coudurier
    av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
339 4ea28253 Baptiste Coudurier
    get_be32(pb); /* minor version */
340
    url_fskip(pb, atom.size - 8);
341
    return 0;
342
}
343
344 5ca1d879 Zdenek Kabelac
/* this atom should contain all header atoms */
345
static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
346
{
347
    int err;
348 b6a17df4 Zdenek Kabelac
349 5ca1d879 Zdenek Kabelac
    err = mov_read_default(c, pb, atom);
350
    /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
351
    /* so we don't parse the whole file if over a network */
352
    c->found_moov=1;
353
    if(c->found_mdat)
354
        return 1; /* found both, just go */
355
    return 0; /* now go for mdat */
356
}
357
358
359
static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
360
{
361 f444b977 Baptiste Coudurier
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
362 e4141433 Nicholas Tung
    MOVStreamContext *sc = st->priv_data;
363 f444b977 Baptiste Coudurier
    int version = get_byte(pb);
364 b9a87c4d François Revol
    int lang;
365 5ca1d879 Zdenek Kabelac
366 b9a87c4d François Revol
    if (version > 1)
367
        return 1; /* unsupported */
368 5ca1d879 Zdenek Kabelac
369
    get_byte(pb); get_byte(pb);
370
    get_byte(pb); /* flags */
371
372 f444b977 Baptiste Coudurier
    if (version == 1) {
373
        get_be64(pb);
374
        get_be64(pb);
375
    } else {
376
        get_be32(pb); /* creation time */
377
        get_be32(pb); /* modification time */
378
    }
379 5ca1d879 Zdenek Kabelac
380 f444b977 Baptiste Coudurier
    sc->time_scale = get_be32(pb);
381
    st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
382 5ca1d879 Zdenek Kabelac
383 b9a87c4d François Revol
    lang = get_be16(pb); /* language */
384 f444b977 Baptiste Coudurier
    ff_mov_lang_to_iso639(lang, st->language);
385 5ca1d879 Zdenek Kabelac
    get_be16(pb); /* quality */
386
387
    return 0;
388
}
389
390
static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
391
{
392 1175561e Baptiste Coudurier
    int version = get_byte(pb); /* version */
393 5ca1d879 Zdenek Kabelac
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
394
395 1175561e Baptiste Coudurier
    if (version == 1) {
396
        get_be64(pb);
397
        get_be64(pb);
398
    } else {
399
        get_be32(pb); /* creation time */
400
        get_be32(pb); /* modification time */
401
    }
402 5ca1d879 Zdenek Kabelac
    c->time_scale = get_be32(pb); /* time scale */
403 f8c18cd7 Baptiste Coudurier
404
    dprintf(c->fc, "time scale = %i\n", c->time_scale);
405
406 1175561e Baptiste Coudurier
    c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
407 5ca1d879 Zdenek Kabelac
    get_be32(pb); /* preferred scale */
408
409
    get_be16(pb); /* preferred volume */
410
411
    url_fskip(pb, 10); /* reserved */
412
413
    url_fskip(pb, 36); /* display matrix */
414
415
    get_be32(pb); /* preview time */
416
    get_be32(pb); /* preview duration */
417
    get_be32(pb); /* poster time */
418
    get_be32(pb); /* selection time */
419
    get_be32(pb); /* selection duration */
420
    get_be32(pb); /* current time */
421
    get_be32(pb); /* next track ID */
422
423
    return 0;
424
}
425
426 9ed83b0a Zdenek Kabelac
static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
427
{
428
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
429
430 568e18b1 Michael Niedermayer
    if((uint64_t)atom.size > (1<<30))
431
        return -1;
432 115329f1 Diego Biurrun
433 9ed83b0a Zdenek Kabelac
    // currently SVQ3 decoder expect full STSD header - so let's fake it
434
    // this should be fixed and just SMI header should be passed
435 01f4895c Michael Niedermayer
    av_free(st->codec->extradata);
436
    st->codec->extradata_size = 0x5a + atom.size;
437 9a630c25 Baptiste Coudurier
    st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
438 01f4895c Michael Niedermayer
439
    if (st->codec->extradata) {
440 560588b7 Baptiste Coudurier
        memcpy(st->codec->extradata, "SVQ3", 4); // fake
441 b95d44b6 Baptiste Coudurier
        get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
442 318c5e05 Michel Bardiaux
        dprintf(c->fc, "Reading SMI %"PRId64"  %s\n", atom.size, st->codec->extradata + 0x5a);
443 9ed83b0a Zdenek Kabelac
    } else
444 bb270c08 Diego Biurrun
        url_fskip(pb, atom.size);
445 9ed83b0a Zdenek Kabelac
446
    return 0;
447
}
448 5ca1d879 Zdenek Kabelac
449 de23f234 Baptiste Coudurier
static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
450
{
451
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
452
    int little_endian = get_be16(pb);
453
454
    if (little_endian) {
455
        switch (st->codec->codec_id) {
456
        case CODEC_ID_PCM_S24BE:
457
            st->codec->codec_id = CODEC_ID_PCM_S24LE;
458
            break;
459
        case CODEC_ID_PCM_S32BE:
460
            st->codec->codec_id = CODEC_ID_PCM_S32LE;
461
            break;
462
        default:
463
            break;
464
        }
465
    }
466
    return 0;
467
}
468
469 014a5102 Baptiste Coudurier
/* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
470
static int mov_read_extradata(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
471 de23f234 Baptiste Coudurier
{
472
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
473 014a5102 Baptiste Coudurier
    if((uint64_t)atom.size > (1<<30))
474
        return -1;
475 de23f234 Baptiste Coudurier
    av_free(st->codec->extradata);
476 014a5102 Baptiste Coudurier
    st->codec->extradata_size = atom.size + 8;
477 9a630c25 Baptiste Coudurier
    st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
478 de23f234 Baptiste Coudurier
    if (st->codec->extradata) {
479 014a5102 Baptiste Coudurier
        AV_WL32(st->codec->extradata + 4, atom.type);
480
        get_buffer(pb, st->codec->extradata + 8, atom.size);
481 de23f234 Baptiste Coudurier
    } else
482
        url_fskip(pb, atom.size);
483
    return 0;
484
}
485
486 d9b1c197 Roberto Togni
static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
487
{
488
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
489
490
    if((uint64_t)atom.size > (1<<30))
491
        return -1;
492 115329f1 Diego Biurrun
493 3840147e Michael Niedermayer
    if (st->codec->codec_id == CODEC_ID_QDM2) {
494
        // pass all frma atom to codec, needed at least for QDM2
495
        av_free(st->codec->extradata);
496
        st->codec->extradata_size = atom.size;
497 9a630c25 Baptiste Coudurier
        st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
498 3840147e Michael Niedermayer
499
        if (st->codec->extradata) {
500
            get_buffer(pb, st->codec->extradata, atom.size);
501
        } else
502
            url_fskip(pb, atom.size);
503
    } else if (atom.size > 8) { /* to read frma, esds atoms */
504
        mov_read_default(c, pb, atom);
505 5c72cad8 Baptiste Coudurier
    } else
506 bb270c08 Diego Biurrun
        url_fskip(pb, atom.size);
507 d9b1c197 Roberto Togni
    return 0;
508
}
509
510 169eb021 Mike Melanson
static int mov_read_avcC(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
511
{
512
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
513
514 568e18b1 Michael Niedermayer
    if((uint64_t)atom.size > (1<<30))
515
        return -1;
516
517 01f4895c Michael Niedermayer
    av_free(st->codec->extradata);
518 169eb021 Mike Melanson
519 01f4895c Michael Niedermayer
    st->codec->extradata_size = atom.size;
520 9a630c25 Baptiste Coudurier
    st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
521 169eb021 Mike Melanson
522 01f4895c Michael Niedermayer
    if (st->codec->extradata) {
523 bb270c08 Diego Biurrun
        get_buffer(pb, st->codec->extradata, atom.size);
524 169eb021 Mike Melanson
    } else
525 bb270c08 Diego Biurrun
        url_fskip(pb, atom.size);
526 169eb021 Mike Melanson
527
    return 0;
528
}
529
530 5ca1d879 Zdenek Kabelac
static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
531
{
532
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
533 e4141433 Nicholas Tung
    MOVStreamContext *sc = st->priv_data;
534 568e18b1 Michael Niedermayer
    unsigned int i, entries;
535 5ca1d879 Zdenek Kabelac
536
    get_byte(pb); /* version */
537
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
538
539
    entries = get_be32(pb);
540 115329f1 Diego Biurrun
541 568e18b1 Michael Niedermayer
    if(entries >= UINT_MAX/sizeof(int64_t))
542
        return -1;
543 115329f1 Diego Biurrun
544 5ca1d879 Zdenek Kabelac
    sc->chunk_count = entries;
545 9a630c25 Baptiste Coudurier
    sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
546 5ca1d879 Zdenek Kabelac
    if (!sc->chunk_offsets)
547
        return -1;
548
    if (atom.type == MKTAG('s', 't', 'c', 'o')) {
549
        for(i=0; i<entries; i++) {
550
            sc->chunk_offsets[i] = get_be32(pb);
551
        }
552
    } else if (atom.type == MKTAG('c', 'o', '6', '4')) {
553
        for(i=0; i<entries; i++) {
554
            sc->chunk_offsets[i] = get_be64(pb);
555
        }
556
    } else
557
        return -1;
558 115329f1 Diego Biurrun
559 5ca1d879 Zdenek Kabelac
    return 0;
560
}
561
562
static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
563
{
564
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
565 e4141433 Nicholas Tung
    MOVStreamContext *sc = st->priv_data;
566 5ca1d879 Zdenek Kabelac
    int entries, frames_per_sample;
567
    uint32_t format;
568 53ffdd14 Roine Gustafsson
    uint8_t codec_name[32];
569 5ca1d879 Zdenek Kabelac
570 b595afaa Mike Melanson
    /* for palette traversal */
571
    int color_depth;
572
    int color_start;
573
    int color_count;
574
    int color_end;
575
    int color_index;
576
    int color_dec;
577
    int color_greyscale;
578
    unsigned char *color_table;
579
    int j;
580
    unsigned char r, g, b;
581
582 6cea494e Zdenek Kabelac
    get_byte(pb); /* version */
583
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
584
585
    entries = get_be32(pb);
586
587 891f64b3 joca@rixmail.se
    while(entries--) { //Parsing Sample description table
588 b6a17df4 Zdenek Kabelac
        enum CodecID id;
589 de23f234 Baptiste Coudurier
        MOV_atom_t a = { 0, 0, 0 };
590 3840147e Michael Niedermayer
        offset_t start_pos = url_ftell(pb);
591 bb270c08 Diego Biurrun
        int size = get_be32(pb); /* size */
592 6cea494e Zdenek Kabelac
        format = get_le32(pb); /* data format */
593 5cd62665 Zdenek Kabelac
594 6cea494e Zdenek Kabelac
        get_be32(pb); /* reserved */
595
        get_be16(pb); /* reserved */
596
        get_be16(pb); /* index */
597 0e7eed09 Fabrice Bellard
598 e7cc4b52 Baptiste Coudurier
        if (st->codec->codec_tag) {
599
            /* multiple fourcc, just skip for now */
600
            url_fskip(pb, size - (url_ftell(pb) - start_pos));
601
            continue;
602
        }
603
604 bb270c08 Diego Biurrun
        st->codec->codec_tag = format;
605 1e5f5e3b Baptiste Coudurier
        id = codec_get_id(codec_movaudio_tags, format);
606 48855b26 Baptiste Coudurier
        if (st->codec->codec_type != CODEC_TYPE_VIDEO && id > 0) {
607 99487f42 Baptiste Coudurier
            st->codec->codec_type = CODEC_TYPE_AUDIO;
608 48855b26 Baptiste Coudurier
        } else if (st->codec->codec_type != CODEC_TYPE_AUDIO && /* do not overwrite codec type */
609
                   format && format != MKTAG('m', 'p', '4', 's')) { /* skip old asf mpeg4 tag */
610 1e5f5e3b Baptiste Coudurier
            id = codec_get_id(codec_movvideo_tags, format);
611 99487f42 Baptiste Coudurier
            if (id <= 0)
612 de23f234 Baptiste Coudurier
                id = codec_get_id(codec_bmp_tags, format);
613 99487f42 Baptiste Coudurier
            if (id > 0)
614
                st->codec->codec_type = CODEC_TYPE_VIDEO;
615
        }
616
617 318c5e05 Michel Bardiaux
        dprintf(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n",
618 a20da52c Baptiste Coudurier
                size,
619
                (format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff, (format >> 24) & 0xff,
620
                st->codec->codec_type);
621
622 99487f42 Baptiste Coudurier
        if(st->codec->codec_type==CODEC_TYPE_VIDEO) {
623 01f4895c Michael Niedermayer
            st->codec->codec_id = id;
624 6cea494e Zdenek Kabelac
            get_be16(pb); /* version */
625
            get_be16(pb); /* revision level */
626
            get_be32(pb); /* vendor */
627
            get_be32(pb); /* temporal quality */
628
            get_be32(pb); /* spacial quality */
629 3cb4ee51 Baptiste Coudurier
630
            st->codec->width = get_be16(pb); /* width */
631
            st->codec->height = get_be16(pb); /* height */
632
633 6cea494e Zdenek Kabelac
            get_be32(pb); /* horiz resolution */
634
            get_be32(pb); /* vert resolution */
635
            get_be32(pb); /* data size, always 0 */
636 5cd62665 Zdenek Kabelac
            frames_per_sample = get_be16(pb); /* frames per samples */
637 f8c18cd7 Baptiste Coudurier
638
            dprintf(c->fc, "frames/samples = %d\n", frames_per_sample);
639
640 576f1445 Baptiste Coudurier
            get_buffer(pb, codec_name, 32); /* codec name, pascal string (FIXME: true for mp4?) */
641
            if (codec_name[0] <= 31) {
642
                memcpy(st->codec->codec_name, &codec_name[1],codec_name[0]);
643
                st->codec->codec_name[codec_name[0]] = 0;
644
            }
645 5cd62665 Zdenek Kabelac
646 bb270c08 Diego Biurrun
            st->codec->bits_per_sample = get_be16(pb); /* depth */
647 01f4895c Michael Niedermayer
            st->codec->color_table_id = get_be16(pb); /* colortable id */
648 6cea494e Zdenek Kabelac
649 b595afaa Mike Melanson
            /* figure out the palette situation */
650 01f4895c Michael Niedermayer
            color_depth = st->codec->bits_per_sample & 0x1F;
651
            color_greyscale = st->codec->bits_per_sample & 0x20;
652 b595afaa Mike Melanson
653
            /* if the depth is 2, 4, or 8 bpp, file is palettized */
654 115329f1 Diego Biurrun
            if ((color_depth == 2) || (color_depth == 4) ||
655 b595afaa Mike Melanson
                (color_depth == 8)) {
656
657
                if (color_greyscale) {
658
659
                    /* compute the greyscale palette */
660
                    color_count = 1 << color_depth;
661
                    color_index = 255;
662
                    color_dec = 256 / (color_count - 1);
663
                    for (j = 0; j < color_count; j++) {
664
                        r = g = b = color_index;
665
                        c->palette_control.palette[j] =
666
                            (r << 16) | (g << 8) | (b);
667
                        color_index -= color_dec;
668
                        if (color_index < 0)
669
                            color_index = 0;
670
                    }
671
672 01f4895c Michael Niedermayer
                } else if (st->codec->color_table_id & 0x08) {
673 b595afaa Mike Melanson
674
                    /* if flag bit 3 is set, use the default palette */
675
                    color_count = 1 << color_depth;
676
                    if (color_depth == 2)
677 a90466f7 Michael Niedermayer
                        color_table = ff_qt_default_palette_4;
678 b595afaa Mike Melanson
                    else if (color_depth == 4)
679 a90466f7 Michael Niedermayer
                        color_table = ff_qt_default_palette_16;
680 b595afaa Mike Melanson
                    else
681 a90466f7 Michael Niedermayer
                        color_table = ff_qt_default_palette_256;
682 b595afaa Mike Melanson
683
                    for (j = 0; j < color_count; j++) {
684
                        r = color_table[j * 4 + 0];
685
                        g = color_table[j * 4 + 1];
686
                        b = color_table[j * 4 + 2];
687
                        c->palette_control.palette[j] =
688
                            (r << 16) | (g << 8) | (b);
689
                    }
690
691
                } else {
692
693
                    /* load the palette from the file */
694
                    color_start = get_be32(pb);
695
                    color_count = get_be16(pb);
696
                    color_end = get_be16(pb);
697
                    for (j = color_start; j <= color_end; j++) {
698
                        /* each R, G, or B component is 16 bits;
699
                         * only use the top 8 bits; skip alpha bytes
700
                         * up front */
701
                        get_byte(pb);
702
                        get_byte(pb);
703
                        r = get_byte(pb);
704
                        get_byte(pb);
705
                        g = get_byte(pb);
706
                        get_byte(pb);
707
                        b = get_byte(pb);
708
                        get_byte(pb);
709
                        c->palette_control.palette[j] =
710
                            (r << 16) | (g << 8) | (b);
711
                    }
712
                }
713
714 01f4895c Michael Niedermayer
                st->codec->palctrl = &c->palette_control;
715
                st->codec->palctrl->palette_changed = 1;
716 b595afaa Mike Melanson
            } else
717 01f4895c Michael Niedermayer
                st->codec->palctrl = NULL;
718 de23f234 Baptiste Coudurier
        } else if(st->codec->codec_type==CODEC_TYPE_AUDIO) {
719 b72708f8 Baptiste Coudurier
            int bits_per_sample;
720 de23f234 Baptiste Coudurier
            uint16_t version = get_be16(pb);
721 b595afaa Mike Melanson
722 99487f42 Baptiste Coudurier
            st->codec->codec_id = id;
723 de23f234 Baptiste Coudurier
            get_be16(pb); /* revision level */
724
            get_be32(pb); /* vendor */
725 6d6d7970 Mike Melanson
726 de23f234 Baptiste Coudurier
            st->codec->channels = get_be16(pb);             /* channel count */
727 318c5e05 Michel Bardiaux
            dprintf(c->fc, "audio channels %d\n", st->codec->channels);
728 de23f234 Baptiste Coudurier
            st->codec->bits_per_sample = get_be16(pb);      /* sample size */
729
            /* do we need to force to 16 for AMR ? */
730
731
            /* handle specific s8 codec */
732
            get_be16(pb); /* compression id = 0*/
733
            get_be16(pb); /* packet size = 0 */
734
735
            st->codec->sample_rate = ((get_be32(pb) >> 16));
736
737
            switch (st->codec->codec_id) {
738 b72708f8 Baptiste Coudurier
            case CODEC_ID_PCM_S8:
739
            case CODEC_ID_PCM_U8:
740
                if (st->codec->bits_per_sample == 16)
741
                    st->codec->codec_id = CODEC_ID_PCM_S16BE;
742
                break;
743 0dd39bfe Baptiste Coudurier
            case CODEC_ID_PCM_S16LE:
744 de23f234 Baptiste Coudurier
            case CODEC_ID_PCM_S16BE:
745
                if (st->codec->bits_per_sample == 8)
746
                    st->codec->codec_id = CODEC_ID_PCM_S8;
747 0299a87c Baptiste Coudurier
                else if (st->codec->bits_per_sample == 24)
748
                    st->codec->codec_id = CODEC_ID_PCM_S24BE;
749 de23f234 Baptiste Coudurier
                break;
750
            default:
751
                break;
752 6d6d7970 Mike Melanson
            }
753 14342fd5 Johannes Carlsson
754 755bfeab Diego Biurrun
            //Read QT version 1 fields. In version 0 these do not exist.
755 318c5e05 Michel Bardiaux
            dprintf(c->fc, "version =%d, isom =%d\n",version,c->isom);
756 152e9a43 Baptiste Coudurier
            if(!c->isom) {
757 80c5b9a1 Baptiste Coudurier
                if(version==1) {
758 e14f79ed Baptiste Coudurier
                    sc->samples_per_frame = get_be32(pb);
759 80c5b9a1 Baptiste Coudurier
                    get_be32(pb); /* bytes per packet */
760 e14f79ed Baptiste Coudurier
                    sc->bytes_per_frame = get_be32(pb);
761 80c5b9a1 Baptiste Coudurier
                    get_be32(pb); /* bytes per sample */
762
                } else if(version==2) {
763
                    get_be32(pb); /* sizeof struct only */
764
                    st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
765
                    st->codec->channels = get_be32(pb);
766
                    get_be32(pb); /* always 0x7F000000 */
767
                    get_be32(pb); /* bits per channel if sound is uncompressed */
768
                    get_be32(pb); /* lcpm format specific flag */
769
                    get_be32(pb); /* bytes per audio packet if constant */
770
                    get_be32(pb); /* lpcm frames per audio packet if constant */
771
                }
772 152e9a43 Baptiste Coudurier
            }
773 9770089d Baptiste Coudurier
774
            bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
775
            if (bits_per_sample) {
776
                st->codec->bits_per_sample = bits_per_sample;
777
                sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
778
            }
779 de23f234 Baptiste Coudurier
        } else {
780
            /* other codec type, just skip (rtp, mp4s, tmcd ...) */
781
            url_fskip(pb, size - (url_ftell(pb) - start_pos));
782 6cea494e Zdenek Kabelac
        }
783 de23f234 Baptiste Coudurier
        /* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
784
        a.size = size - (url_ftell(pb) - start_pos);
785
        if (a.size > 8)
786
            mov_read_default(c, pb, a);
787
        else if (a.size > 0)
788
            url_fskip(pb, a.size);
789 6cea494e Zdenek Kabelac
    }
790 115329f1 Diego Biurrun
791 302c389e Michael Niedermayer
    if(st->codec->codec_type==CODEC_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1) {
792
        st->codec->sample_rate= sc->time_scale;
793
    }
794 e31bd3e3 Baptiste Coudurier
795 d00f8e17 Baptiste Coudurier
    /* special codec parameters handling */
796 e31bd3e3 Baptiste Coudurier
    switch (st->codec->codec_id) {
797 d00f8e17 Baptiste Coudurier
#ifdef CONFIG_H261_DECODER
798
    case CODEC_ID_H261:
799
#endif
800
#ifdef CONFIG_H263_DECODER
801
    case CODEC_ID_H263:
802
#endif
803
#ifdef CONFIG_MPEG4_DECODER
804
    case CODEC_ID_MPEG4:
805
#endif
806
        st->codec->width= 0; /* let decoder init width/height */
807
        st->codec->height= 0;
808
        break;
809 2eed5a46 Diego Biurrun
#ifdef CONFIG_LIBFAAD
810 e31bd3e3 Baptiste Coudurier
    case CODEC_ID_AAC:
811 ec04d244 Baptiste Coudurier
#endif
812 3ed73c46 Baptiste Coudurier
#ifdef CONFIG_VORBIS_DECODER
813
    case CODEC_ID_VORBIS:
814
#endif
815 e31bd3e3 Baptiste Coudurier
    case CODEC_ID_MP3ON4:
816
        st->codec->sample_rate= 0; /* let decoder init parameters properly */
817
        break;
818 989ac5a6 Baptiste Coudurier
#ifdef CONFIG_DV_DEMUXER
819 b60c0454 Baptiste Coudurier
    case CODEC_ID_DVAUDIO:
820
        c->dv_fctx = av_alloc_format_context();
821
        c->dv_demux = dv_init_demux(c->dv_fctx);
822
        if (!c->dv_demux) {
823
            av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
824
            return -1;
825
        }
826
        sc->dv_audio_container = 1;
827
        st->codec->codec_id = CODEC_ID_PCM_S16LE;
828
        break;
829 989ac5a6 Baptiste Coudurier
#endif
830 b95319a2 Baptiste Coudurier
    /* no ifdef since parameters are always those */
831
    case CODEC_ID_AMR_WB:
832
        st->codec->sample_rate= 16000;
833
        st->codec->channels= 1; /* really needed */
834
        break;
835
    case CODEC_ID_AMR_NB:
836
        st->codec->sample_rate= 8000;
837
        st->codec->channels= 1; /* really needed */
838
        break;
839 a41104f8 Michael Niedermayer
    case CODEC_ID_MP2:
840 c59f24e6 Baptiste Coudurier
    case CODEC_ID_MP3:
841 95a07973 Baptiste Coudurier
        st->codec->codec_type = CODEC_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
842 57004ff1 Aurelien Jacobs
        st->need_parsing = AVSTREAM_PARSE_FULL;
843 a41104f8 Michael Niedermayer
        break;
844 e31bd3e3 Baptiste Coudurier
    default:
845
        break;
846
    }
847 5cd62665 Zdenek Kabelac
848 6cea494e Zdenek Kabelac
    return 0;
849
}
850
851 5ca1d879 Zdenek Kabelac
static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
852 6cea494e Zdenek Kabelac
{
853 5ca1d879 Zdenek Kabelac
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
854 e4141433 Nicholas Tung
    MOVStreamContext *sc = st->priv_data;
855 568e18b1 Michael Niedermayer
    unsigned int i, entries;
856 b6a17df4 Zdenek Kabelac
857 6cea494e Zdenek Kabelac
    get_byte(pb); /* version */
858
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
859
860
    entries = get_be32(pb);
861 115329f1 Diego Biurrun
862 e23848a4 Baptiste Coudurier
    if(entries >= UINT_MAX / sizeof(MOV_stsc_t))
863 568e18b1 Michael Niedermayer
        return -1;
864 115329f1 Diego Biurrun
865 f8c18cd7 Baptiste Coudurier
    dprintf(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
866
867 6cea494e Zdenek Kabelac
    sc->sample_to_chunk_sz = entries;
868 e23848a4 Baptiste Coudurier
    sc->sample_to_chunk = av_malloc(entries * sizeof(MOV_stsc_t));
869 b6a17df4 Zdenek Kabelac
    if (!sc->sample_to_chunk)
870
        return -1;
871 6cea494e Zdenek Kabelac
    for(i=0; i<entries; i++) {
872
        sc->sample_to_chunk[i].first = get_be32(pb);
873
        sc->sample_to_chunk[i].count = get_be32(pb);
874
        sc->sample_to_chunk[i].id = get_be32(pb);
875
    }
876
    return 0;
877
}
878
879 247d56f5 Brian Becker
static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
880
{
881
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
882 e4141433 Nicholas Tung
    MOVStreamContext *sc = st->priv_data;
883 568e18b1 Michael Niedermayer
    unsigned int i, entries;
884 247d56f5 Brian Becker
885
    get_byte(pb); /* version */
886
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
887
888
    entries = get_be32(pb);
889 115329f1 Diego Biurrun
890 1c02d96f Baptiste Coudurier
    if(entries >= UINT_MAX / sizeof(int))
891 568e18b1 Michael Niedermayer
        return -1;
892 115329f1 Diego Biurrun
893 247d56f5 Brian Becker
    sc->keyframe_count = entries;
894 f8c18cd7 Baptiste Coudurier
895
    dprintf(c->fc, "keyframe_count = %d\n", sc->keyframe_count);
896
897 1c02d96f Baptiste Coudurier
    sc->keyframes = av_malloc(entries * sizeof(int));
898 247d56f5 Brian Becker
    if (!sc->keyframes)
899
        return -1;
900
    for(i=0; i<entries; i++) {
901
        sc->keyframes[i] = get_be32(pb);
902 f8c18cd7 Baptiste Coudurier
        //dprintf(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
903 247d56f5 Brian Becker
    }
904
    return 0;
905
}
906
907 5ca1d879 Zdenek Kabelac
static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
908 6cea494e Zdenek Kabelac
{
909 5ca1d879 Zdenek Kabelac
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
910 e4141433 Nicholas Tung
    MOVStreamContext *sc = st->priv_data;
911 b72708f8 Baptiste Coudurier
    unsigned int i, entries, sample_size;
912 b6a17df4 Zdenek Kabelac
913 6cea494e Zdenek Kabelac
    get_byte(pb); /* version */
914
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
915 5cd62665 Zdenek Kabelac
916 b72708f8 Baptiste Coudurier
    sample_size = get_be32(pb);
917
    if (!sc->sample_size) /* do not overwrite value computed in stsd */
918
        sc->sample_size = sample_size;
919 6cea494e Zdenek Kabelac
    entries = get_be32(pb);
920 1c02d96f Baptiste Coudurier
    if(entries >= UINT_MAX / sizeof(int))
921 568e18b1 Michael Niedermayer
        return -1;
922
923 6cea494e Zdenek Kabelac
    sc->sample_count = entries;
924 b72708f8 Baptiste Coudurier
    if (sample_size)
925
        return 0;
926
927 f8c18cd7 Baptiste Coudurier
    dprintf(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, sc->sample_count);
928
929 1c02d96f Baptiste Coudurier
    sc->sample_sizes = av_malloc(entries * sizeof(int));
930 b6a17df4 Zdenek Kabelac
    if (!sc->sample_sizes)
931
        return -1;
932 6cea494e Zdenek Kabelac
    for(i=0; i<entries; i++) {
933
        sc->sample_sizes[i] = get_be32(pb);
934 f8c18cd7 Baptiste Coudurier
        dprintf(c->fc, "sample_sizes[]=%d\n", sc->sample_sizes[i]);
935 6cea494e Zdenek Kabelac
    }
936
    return 0;
937
}
938
939 5ca1d879 Zdenek Kabelac
static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
940 0147f198 François Revol
{
941 5ca1d879 Zdenek Kabelac
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
942 e4141433 Nicholas Tung
    MOVStreamContext *sc = st->priv_data;
943 568e18b1 Michael Niedermayer
    unsigned int i, entries;
944 d957696f Michael Niedermayer
    int64_t duration=0;
945
    int64_t total_sample_count=0;
946 b6a17df4 Zdenek Kabelac
947 0147f198 François Revol
    get_byte(pb); /* version */
948
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
949
    entries = get_be32(pb);
950 e23848a4 Baptiste Coudurier
    if(entries >= UINT_MAX / sizeof(MOV_stts_t))
951 568e18b1 Michael Niedermayer
        return -1;
952 891f64b3 joca@rixmail.se
953 cd7352d5 Michael Niedermayer
    sc->stts_count = entries;
954 e23848a4 Baptiste Coudurier
    sc->stts_data = av_malloc(entries * sizeof(MOV_stts_t));
955 891f64b3 joca@rixmail.se
956 f8c18cd7 Baptiste Coudurier
    dprintf(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
957 cd7352d5 Michael Niedermayer
958
    sc->time_rate=0;
959
960 0147f198 François Revol
    for(i=0; i<entries; i++) {
961 cd461d48 Michael Niedermayer
        int sample_duration;
962
        int sample_count;
963 0147f198 François Revol
964 891f64b3 joca@rixmail.se
        sample_count=get_be32(pb);
965 0147f198 François Revol
        sample_duration = get_be32(pb);
966 cd7352d5 Michael Niedermayer
        sc->stts_data[i].count= sample_count;
967
        sc->stts_data[i].duration= sample_duration;
968
969
        sc->time_rate= ff_gcd(sc->time_rate, sample_duration);
970 961e0ccd Michael Niedermayer
971 318c5e05 Michel Bardiaux
        dprintf(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
972 4e5ef14f Baptiste Coudurier
973 7e815047 Baptiste Coudurier
        duration+=(int64_t)sample_duration*sample_count;
974 891f64b3 joca@rixmail.se
        total_sample_count+=sample_count;
975
    }
976
977 961e0ccd Michael Niedermayer
    st->nb_frames= total_sample_count;
978
    if(duration)
979
        st->duration= duration;
980 0147f198 François Revol
    return 0;
981
}
982
983 c4ac052b Michael Niedermayer
static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
984
{
985 70a61ed4 Michael Niedermayer
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
986 e4141433 Nicholas Tung
    MOVStreamContext *sc = st->priv_data;
987 c4ac052b Michael Niedermayer
    unsigned int i, entries;
988
989
    get_byte(pb); /* version */
990
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
991
    entries = get_be32(pb);
992 e23848a4 Baptiste Coudurier
    if(entries >= UINT_MAX / sizeof(MOV_stts_t))
993 c4ac052b Michael Niedermayer
        return -1;
994
995 70a61ed4 Michael Niedermayer
    sc->ctts_count = entries;
996 e23848a4 Baptiste Coudurier
    sc->ctts_data = av_malloc(entries * sizeof(MOV_stts_t));
997 c4ac052b Michael Niedermayer
998 318c5e05 Michel Bardiaux
    dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
999 4e5ef14f Baptiste Coudurier
1000 c4ac052b Michael Niedermayer
    for(i=0; i<entries; i++) {
1001 70a61ed4 Michael Niedermayer
        int count    =get_be32(pb);
1002
        int duration =get_be32(pb);
1003
1004 b0519015 Baptiste Coudurier
        if (duration < 0) {
1005
            av_log(c->fc, AV_LOG_ERROR, "negative ctts, ignoring\n");
1006
            sc->ctts_count = 0;
1007
            url_fskip(pb, 8 * (entries - i - 1));
1008
            break;
1009
        }
1010 70a61ed4 Michael Niedermayer
        sc->ctts_data[i].count   = count;
1011
        sc->ctts_data[i].duration= duration;
1012
1013
        sc->time_rate= ff_gcd(sc->time_rate, duration);
1014 c4ac052b Michael Niedermayer
    }
1015
    return 0;
1016
}
1017
1018 5ca1d879 Zdenek Kabelac
static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1019
{
1020
    AVStream *st;
1021
    MOVStreamContext *sc;
1022
1023
    st = av_new_stream(c->fc, c->fc->nb_streams);
1024
    if (!st) return -2;
1025 9a630c25 Baptiste Coudurier
    sc = av_mallocz(sizeof(MOVStreamContext));
1026 5ca1d879 Zdenek Kabelac
    if (!sc) {
1027 bb270c08 Diego Biurrun
        av_free(st);
1028 5ca1d879 Zdenek Kabelac
        return -1;
1029
    }
1030
1031
    st->priv_data = sc;
1032 05edc1a7 Baptiste Coudurier
    st->codec->codec_type = CODEC_TYPE_DATA;
1033 25c4950e Fabrice Bellard
    st->start_time = 0; /* XXX: check */
1034 5ca1d879 Zdenek Kabelac
    c->streams[c->fc->nb_streams-1] = sc;
1035
1036
    return mov_read_default(c, pb, atom);
1037
}
1038
1039 d2ace376 Benoit Fouet
static void mov_parse_udta_string(ByteIOContext *pb, char *str, int size)
1040
{
1041
    uint16_t str_size = get_be16(pb); /* string length */;
1042
1043
    get_be16(pb); /* skip language */
1044
    get_buffer(pb, str, FFMIN(size, str_size));
1045
}
1046
1047
static int mov_read_udta(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1048
{
1049
    uint64_t end = url_ftell(pb) + atom.size;
1050
1051
    while (url_ftell(pb) + 8 < end) {
1052
        uint32_t tag_size = get_be32(pb);
1053
        uint32_t tag      = get_le32(pb);
1054
        uint64_t next     = url_ftell(pb) + tag_size - 8;
1055
1056
        switch (tag) {
1057
        case MKTAG(0xa9,'n','a','m'):
1058
            mov_parse_udta_string(pb, c->fc->title,     sizeof(c->fc->title));
1059
            break;
1060
        case MKTAG(0xa9,'w','r','t'):
1061
            mov_parse_udta_string(pb, c->fc->author,    sizeof(c->fc->author));
1062
            break;
1063
        case MKTAG(0xa9,'c','p','y'):
1064
            mov_parse_udta_string(pb, c->fc->copyright, sizeof(c->fc->copyright));
1065
            break;
1066
        case MKTAG(0xa9,'i','n','f'):
1067
            mov_parse_udta_string(pb, c->fc->comment,   sizeof(c->fc->comment));
1068
            break;
1069
        default:
1070
            break;
1071
        }
1072
1073
        url_fseek(pb, next, SEEK_SET);
1074
    }
1075
1076
    return 0;
1077
}
1078
1079 5ca1d879 Zdenek Kabelac
static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1080
{
1081 f444b977 Baptiste Coudurier
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1082
    int version = get_byte(pb);
1083 5ca1d879 Zdenek Kabelac
1084
    get_byte(pb); get_byte(pb);
1085
    get_byte(pb); /* flags */
1086
    /*
1087
    MOV_TRACK_ENABLED 0x0001
1088
    MOV_TRACK_IN_MOVIE 0x0002
1089
    MOV_TRACK_IN_PREVIEW 0x0004
1090
    MOV_TRACK_IN_POSTER 0x0008
1091
    */
1092
1093 1175561e Baptiste Coudurier
    if (version == 1) {
1094
        get_be64(pb);
1095
        get_be64(pb);
1096
    } else {
1097
        get_be32(pb); /* creation time */
1098
        get_be32(pb); /* modification time */
1099
    }
1100 5ca1d879 Zdenek Kabelac
    st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1101
    get_be32(pb); /* reserved */
1102 25c4950e Fabrice Bellard
    st->start_time = 0; /* check */
1103 1175561e Baptiste Coudurier
    (version == 1) ? get_be64(pb) : get_be32(pb); /* highlevel (considering edits) duration in movie timebase */
1104 5ca1d879 Zdenek Kabelac
    get_be32(pb); /* reserved */
1105
    get_be32(pb); /* reserved */
1106
1107
    get_be16(pb); /* layer */
1108
    get_be16(pb); /* alternate group */
1109
    get_be16(pb); /* volume */
1110
    get_be16(pb); /* reserved */
1111
1112
    url_fskip(pb, 36); /* display matrix */
1113
1114
    /* those are fixed-point */
1115 c3daf8d8 Baptiste Coudurier
    get_be32(pb); /* track width */
1116
    get_be32(pb); /* track height */
1117 5ca1d879 Zdenek Kabelac
1118
    return 0;
1119
}
1120
1121
/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1122
/* like the files created with Adobe Premiere 5.0, for samples see */
1123
/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1124
static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1125
{
1126
    int err;
1127
1128
    if (atom.size < 8)
1129
        return 0; /* continue */
1130
    if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1131
        url_fskip(pb, atom.size - 4);
1132
        return 0;
1133
    }
1134
    atom.type = get_le32(pb);
1135
    atom.offset += 8;
1136
    atom.size -= 8;
1137 fd6e513e Zdenek Kabelac
    if (atom.type != MKTAG('m', 'd', 'a', 't')) {
1138 5ca1d879 Zdenek Kabelac
        url_fskip(pb, atom.size);
1139
        return 0;
1140
    }
1141
    err = mov_read_mdat(c, pb, atom);
1142
    return err;
1143
}
1144
1145
static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1146 0147f198 François Revol
{
1147 d966b2f0 Baptiste Coudurier
#ifdef CONFIG_ZLIB
1148 0147f198 François Revol
    ByteIOContext ctx;
1149 b6a17df4 Zdenek Kabelac
    uint8_t *cmov_data;
1150
    uint8_t *moov_data; /* uncompressed data */
1151 0147f198 François Revol
    long cmov_len, moov_len;
1152
    int ret;
1153 b6a17df4 Zdenek Kabelac
1154 0147f198 François Revol
    get_be32(pb); /* dcom atom */
1155
    if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1156
        return -1;
1157
    if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
1158 4e5ef14f Baptiste Coudurier
        av_log(NULL, AV_LOG_ERROR, "unknown compression for cmov atom !");
1159 0147f198 François Revol
        return -1;
1160
    }
1161
    get_be32(pb); /* cmvd atom */
1162
    if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1163
        return -1;
1164
    moov_len = get_be32(pb); /* uncompressed size */
1165 5ca1d879 Zdenek Kabelac
    cmov_len = atom.size - 6 * 4;
1166 5cd62665 Zdenek Kabelac
1167 9a630c25 Baptiste Coudurier
    cmov_data = av_malloc(cmov_len);
1168 0147f198 François Revol
    if (!cmov_data)
1169
        return -1;
1170 9a630c25 Baptiste Coudurier
    moov_data = av_malloc(moov_len);
1171 0147f198 François Revol
    if (!moov_data) {
1172
        av_free(cmov_data);
1173
        return -1;
1174
    }
1175
    get_buffer(pb, cmov_data, cmov_len);
1176 b6a17df4 Zdenek Kabelac
    if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1177 0147f198 François Revol
        return -1;
1178 942f3bb5 Michael Niedermayer
    if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
1179 0147f198 François Revol
        return -1;
1180 5ca1d879 Zdenek Kabelac
    atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1181
    atom.offset = 0;
1182
    atom.size = moov_len;
1183 9ed83b0a Zdenek Kabelac
#ifdef DEBUG
1184 dbb4f00a Michael Niedermayer
//    { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1185 9ed83b0a Zdenek Kabelac
#endif
1186 5ca1d879 Zdenek Kabelac
    ret = mov_read_default(c, &ctx, atom);
1187 0147f198 François Revol
    av_free(moov_data);
1188
    av_free(cmov_data);
1189
    return ret;
1190 d966b2f0 Baptiste Coudurier
#else
1191
    av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
1192
    return -1;
1193 0147f198 François Revol
#endif
1194 d966b2f0 Baptiste Coudurier
}
1195 0147f198 François Revol
1196 baf25c9d Gael Chardon
/* edit list atom */
1197
static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1198
{
1199 e0977c80 Baptiste Coudurier
    int i, edit_count;
1200
1201
    get_byte(pb); /* version */
1202
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1203
    edit_count= c->streams[c->fc->nb_streams-1]->edit_count = get_be32(pb);     /* entries */
1204
1205
    for(i=0; i<edit_count; i++){
1206
        get_be32(pb); /* Track duration */
1207
        get_be32(pb); /* Media time */
1208
        get_be32(pb); /* Media rate */
1209
    }
1210 318c5e05 Michel Bardiaux
    dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, c->streams[c->fc->nb_streams-1]->edit_count);
1211 e0977c80 Baptiste Coudurier
    return 0;
1212 baf25c9d Gael Chardon
}
1213
1214 6cea494e Zdenek Kabelac
static const MOVParseTableEntry mov_default_parse_table[] = {
1215
/* mp4 atoms */
1216 5ca1d879 Zdenek Kabelac
{ MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1217 c4ac052b Michael Niedermayer
{ MKTAG( 'c', 't', 't', 's' ), mov_read_ctts }, /* composition time to sample */
1218 5ca1d879 Zdenek Kabelac
{ MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
1219 58e555d4 Michael Niedermayer
{ MKTAG( 'e', 'l', 's', 't' ), mov_read_elst },
1220 de23f234 Baptiste Coudurier
{ MKTAG( 'e', 'n', 'd', 'a' ), mov_read_enda },
1221 9a63497b Baptiste Coudurier
{ MKTAG( 'f', 'i', 'e', 'l' ), mov_read_extradata },
1222 4ea28253 Baptiste Coudurier
{ MKTAG( 'f', 't', 'y', 'p' ), mov_read_ftyp },
1223 5ca1d879 Zdenek Kabelac
{ MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1224 014a5102 Baptiste Coudurier
{ MKTAG( 'j', 'p', '2', 'h' ), mov_read_extradata },
1225 5ca1d879 Zdenek Kabelac
{ MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1226
{ MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1227
{ MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1228
{ MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1229
{ MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1230
{ MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1231 169eb021 Mike Melanson
{ MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorenson extension ??? */
1232 014a5102 Baptiste Coudurier
{ MKTAG( 'a', 'l', 'a', 'c' ), mov_read_extradata }, /* alac specific atom */
1233 115329f1 Diego Biurrun
{ MKTAG( 'a', 'v', 'c', 'C' ), mov_read_avcC },
1234 5ca1d879 Zdenek Kabelac
{ MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1235
{ MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1236
{ MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1237
{ MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1238 247d56f5 Brian Becker
{ MKTAG( 's', 't', 's', 's' ), mov_read_stss }, /* sync sample */
1239 5ca1d879 Zdenek Kabelac
{ MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1240
{ MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1241
{ MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1242
{ MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1243 d2ace376 Benoit Fouet
{ MKTAG( 'u', 'd', 't', 'a' ), mov_read_udta },
1244 d9b1c197 Roberto Togni
{ MKTAG( 'w', 'a', 'v', 'e' ), mov_read_wave },
1245 5ca1d879 Zdenek Kabelac
{ MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1246
{ MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1247
{ MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
1248 b59cb456 Baptiste Coudurier
{ 0L, NULL }
1249 6cea494e Zdenek Kabelac
};
1250
1251 b6a17df4 Zdenek Kabelac
/* XXX: is it sufficient ? */
1252 c9a65ca8 Fabrice Bellard
static int mov_probe(AVProbeData *p)
1253
{
1254 0e7eed09 Fabrice Bellard
    unsigned int offset;
1255
    uint32_t tag;
1256 2497479f François Revol
    int score = 0;
1257 3ffe3793 François Revol
1258 c9a65ca8 Fabrice Bellard
    /* check file header */
1259 0e7eed09 Fabrice Bellard
    offset = 0;
1260
    for(;;) {
1261
        /* ignore invalid offset */
1262
        if ((offset + 8) > (unsigned int)p->buf_size)
1263 2497479f François Revol
            return score;
1264 fead30d4 Alex Beregszaszi
        tag = AV_RL32(p->buf + offset + 4);
1265 0e7eed09 Fabrice Bellard
        switch(tag) {
1266 2497479f François Revol
        /* check for obvious tags */
1267 fc5188f3 Baptiste Coudurier
        case MKTAG( 'j', 'P', ' ', ' ' ): /* jpeg 2000 signature */
1268 0e7eed09 Fabrice Bellard
        case MKTAG( 'm', 'o', 'o', 'v' ):
1269 8b879f18 François Revol
        case MKTAG( 'm', 'd', 'a', 't' ):
1270
        case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
1271 bc634f6f Zdenek Kabelac
        case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
1272 3ffe3793 François Revol
            return AVPROBE_SCORE_MAX;
1273 2497479f François Revol
        /* those are more common words, so rate then a bit less */
1274 263a93ec Baptiste Coudurier
        case MKTAG( 'e', 'd', 'i', 'w' ): /* xdcam files have reverted first tags */
1275 2497479f François Revol
        case MKTAG( 'w', 'i', 'd', 'e' ):
1276
        case MKTAG( 'f', 'r', 'e', 'e' ):
1277
        case MKTAG( 'j', 'u', 'n', 'k' ):
1278
        case MKTAG( 'p', 'i', 'c', 't' ):
1279
            return AVPROBE_SCORE_MAX - 5;
1280 0e7eed09 Fabrice Bellard
        case MKTAG( 'f', 't', 'y', 'p' ):
1281 5ca1d879 Zdenek Kabelac
        case MKTAG( 's', 'k', 'i', 'p' ):
1282 0d23cb84 François Revol
        case MKTAG( 'u', 'u', 'i', 'd' ):
1283 fead30d4 Alex Beregszaszi
            offset = AV_RB32(p->buf+offset) + offset;
1284 2497479f François Revol
            /* if we only find those cause probedata is too small at least rate them */
1285
            score = AVPROBE_SCORE_MAX - 50;
1286 0e7eed09 Fabrice Bellard
            break;
1287
        default:
1288
            /* unrecognized tag */
1289 2497479f François Revol
            return score;
1290 0e7eed09 Fabrice Bellard
        }
1291 3ffe3793 François Revol
    }
1292 2497479f François Revol
    return score;
1293 c9a65ca8 Fabrice Bellard
}
1294
1295 b72708f8 Baptiste Coudurier
static void mov_build_index(MOVContext *mov, AVStream *st)
1296
{
1297
    MOVStreamContext *sc = st->priv_data;
1298
    offset_t current_offset;
1299
    int64_t current_dts = 0;
1300 01aa1937 Baptiste Coudurier
    unsigned int stts_index = 0;
1301
    unsigned int stsc_index = 0;
1302
    unsigned int stss_index = 0;
1303
    unsigned int i, j, k;
1304 b72708f8 Baptiste Coudurier
1305 b60c0454 Baptiste Coudurier
    if (sc->sample_sizes || st->codec->codec_type == CODEC_TYPE_VIDEO || sc->dv_audio_container) {
1306 01aa1937 Baptiste Coudurier
        unsigned int current_sample = 0;
1307
        unsigned int stts_sample = 0;
1308
        unsigned int keyframe, sample_size;
1309
        unsigned int distance = 0;
1310 b72708f8 Baptiste Coudurier
1311
        st->nb_frames = sc->sample_count;
1312
        for (i = 0; i < sc->chunk_count; i++) {
1313
            current_offset = sc->chunk_offsets[i];
1314
            if (stsc_index + 1 < sc->sample_to_chunk_sz && i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1315
                stsc_index++;
1316
            for (j = 0; j < sc->sample_to_chunk[stsc_index].count; j++) {
1317 64934877 Baptiste Coudurier
                if (current_sample >= sc->sample_count) {
1318
                    av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
1319
                    goto out;
1320
                }
1321 b72708f8 Baptiste Coudurier
                keyframe = !sc->keyframe_count || current_sample + 1 == sc->keyframes[stss_index];
1322
                if (keyframe) {
1323
                    distance = 0;
1324
                    if (stss_index + 1 < sc->keyframe_count)
1325
                        stss_index++;
1326
                }
1327
                sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
1328 318c5e05 Michel Bardiaux
                dprintf(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", size %d, distance %d, keyframe %d\n",
1329 b72708f8 Baptiste Coudurier
                        st->index, current_sample, current_offset, current_dts, sample_size, distance, keyframe);
1330
                av_add_index_entry(st, current_offset, current_dts, sample_size, distance, keyframe ? AVINDEX_KEYFRAME : 0);
1331
                current_offset += sample_size;
1332
                assert(sc->stts_data[stts_index].duration % sc->time_rate == 0);
1333
                current_dts += sc->stts_data[stts_index].duration / sc->time_rate;
1334
                distance++;
1335
                stts_sample++;
1336 64934877 Baptiste Coudurier
                current_sample++;
1337 b72708f8 Baptiste Coudurier
                if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
1338
                    stts_sample = 0;
1339
                    stts_index++;
1340
                }
1341
            }
1342
        }
1343
    } else { /* read whole chunk */
1344 01aa1937 Baptiste Coudurier
        unsigned int chunk_samples, chunk_size, chunk_duration;
1345 b72708f8 Baptiste Coudurier
1346
        for (i = 0; i < sc->chunk_count; i++) {
1347
            current_offset = sc->chunk_offsets[i];
1348
            if (stsc_index + 1 < sc->sample_to_chunk_sz && i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
1349
                stsc_index++;
1350
            chunk_samples = sc->sample_to_chunk[stsc_index].count;
1351
            /* get chunk size */
1352 c61900c6 Baptiste Coudurier
            if (sc->sample_size > 1 || st->codec->codec_id == CODEC_ID_PCM_U8 || st->codec->codec_id == CODEC_ID_PCM_S8)
1353 b72708f8 Baptiste Coudurier
                chunk_size = chunk_samples * sc->sample_size;
1354 e14f79ed Baptiste Coudurier
            else if (sc->samples_per_frame > 0 && (chunk_samples * sc->bytes_per_frame % sc->samples_per_frame == 0))
1355
                chunk_size = chunk_samples * sc->bytes_per_frame / sc->samples_per_frame;
1356 b72708f8 Baptiste Coudurier
            else { /* workaround to find nearest next chunk offset */
1357
                chunk_size = INT_MAX;
1358
                for (j = 0; j < mov->total_streams; j++) {
1359
                    MOVStreamContext *msc = mov->streams[j];
1360
1361
                    for (k = msc->next_chunk; k < msc->chunk_count; k++) {
1362
                        if (msc->chunk_offsets[k] > current_offset && msc->chunk_offsets[k] - current_offset < chunk_size) {
1363
                            chunk_size = msc->chunk_offsets[k] - current_offset;
1364
                            msc->next_chunk = k;
1365
                            break;
1366
                        }
1367
                    }
1368
                }
1369
                /* check for last chunk */
1370
                if (chunk_size == INT_MAX)
1371
                    for (j = 0; j < mov->mdat_count; j++) {
1372 318c5e05 Michel Bardiaux
                        dprintf(mov->fc, "mdat %d, offset %"PRIx64", size %"PRId64", current offset %"PRIx64"\n",
1373 b72708f8 Baptiste Coudurier
                                j, mov->mdat_list[j].offset, mov->mdat_list[j].size, current_offset);
1374
                        if (mov->mdat_list[j].offset <= current_offset && mov->mdat_list[j].offset + mov->mdat_list[j].size > current_offset)
1375
                            chunk_size = mov->mdat_list[j].offset + mov->mdat_list[j].size - current_offset;
1376
                    }
1377
                assert(chunk_size != INT_MAX);
1378
                for (j = 0; j < mov->total_streams; j++) {
1379
                    mov->streams[j]->next_chunk = 0;
1380
                }
1381
            }
1382
            av_add_index_entry(st, current_offset, current_dts, chunk_size, 0, AVINDEX_KEYFRAME);
1383
            /* get chunk duration */
1384
            chunk_duration = 0;
1385
            while (chunk_samples > 0) {
1386
                if (chunk_samples < sc->stts_data[stts_index].count) {
1387
                    chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1388
                    sc->stts_data[stts_index].count -= chunk_samples;
1389
                    break;
1390
                } else {
1391
                    chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
1392
                    chunk_samples -= sc->stts_data[stts_index].count;
1393
                    if (stts_index + 1 < sc->stts_count) {
1394
                        stts_index++;
1395
                    }
1396
                }
1397
            }
1398 318c5e05 Michel Bardiaux
            dprintf(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", size %d, duration %d\n",
1399 b72708f8 Baptiste Coudurier
                    st->index, i, current_offset, current_dts, chunk_size, chunk_duration);
1400
            assert(chunk_duration % sc->time_rate == 0);
1401
            current_dts += chunk_duration / sc->time_rate;
1402
        }
1403
    }
1404 64934877 Baptiste Coudurier
 out:
1405 1f1890c7 Baptiste Coudurier
    /* adjust sample count to avindex entries */
1406
    sc->sample_count = st->nb_index_entries;
1407 b72708f8 Baptiste Coudurier
}
1408
1409 a266644f Zdenek Kabelac
static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
1410 6cea494e Zdenek Kabelac
{
1411 e4141433 Nicholas Tung
    MOVContext *mov = s->priv_data;
1412 6cea494e Zdenek Kabelac
    ByteIOContext *pb = &s->pb;
1413 05edc1a7 Baptiste Coudurier
    int i, err;
1414 5ca1d879 Zdenek Kabelac
    MOV_atom_t atom = { 0, 0, 0 };
1415 6cea494e Zdenek Kabelac
1416
    mov->fc = s;
1417 b6a17df4 Zdenek Kabelac
    mov->parse_table = mov_default_parse_table;
1418 3253c51f Michael Niedermayer
1419 6cea494e Zdenek Kabelac
    if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1420 bb270c08 Diego Biurrun
        atom.size = url_fsize(pb);
1421 6cea494e Zdenek Kabelac
    else
1422 fa22ca22 Baptiste Coudurier
        atom.size = INT64_MAX;
1423 6cea494e Zdenek Kabelac
1424
    /* check MOV header */
1425 5ca1d879 Zdenek Kabelac
    err = mov_read_default(mov, pb, atom);
1426 25fa62e1 Zdenek Kabelac
    if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
1427 bb270c08 Diego Biurrun
        av_log(s, AV_LOG_ERROR, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%"PRId64"\n",
1428
                err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1429
        return -1;
1430 6cea494e Zdenek Kabelac
    }
1431 318c5e05 Michel Bardiaux
    dprintf(mov->fc, "on_parse_exit_offset=%d\n", (int) url_ftell(pb));
1432 4e5ef14f Baptiste Coudurier
1433 6cea494e Zdenek Kabelac
    /* some cleanup : make sure we are on the mdat atom */
1434
    if(!url_is_streamed(pb) && (url_ftell(pb) != mov->mdat_offset))
1435
        url_fseek(pb, mov->mdat_offset, SEEK_SET);
1436
1437 05edc1a7 Baptiste Coudurier
    mov->total_streams = s->nb_streams;
1438 5ca1d879 Zdenek Kabelac
1439 05edc1a7 Baptiste Coudurier
    for(i=0; i<mov->total_streams; i++) {
1440
        MOVStreamContext *sc = mov->streams[i];
1441 2d2432b7 Baptiste Coudurier
        AVStream *st = s->streams[i];
1442 dfcf8d57 Baptiste Coudurier
        /* sanity checks */
1443
        if(!sc->stts_count || !sc->chunk_count || !sc->sample_to_chunk_sz ||
1444
           (!sc->sample_size && !sc->sample_count)){
1445
            av_log(s, AV_LOG_ERROR, "missing mandatory atoms, broken header\n");
1446 a097e559 Baptiste Coudurier
            sc->sample_count = 0; //ignore track
1447 b0c17f77 Baptiste Coudurier
            continue;
1448 dfcf8d57 Baptiste Coudurier
        }
1449 05edc1a7 Baptiste Coudurier
        if(!sc->time_rate)
1450
            sc->time_rate=1;
1451
        if(!sc->time_scale)
1452
            sc->time_scale= mov->time_scale;
1453 638fd2fc Baptiste Coudurier
        av_set_pts_info(st, 64, sc->time_rate, sc->time_scale);
1454 05edc1a7 Baptiste Coudurier
1455 2d2432b7 Baptiste Coudurier
        if (st->codec->codec_type == CODEC_TYPE_AUDIO && sc->stts_count == 1)
1456
            st->codec->frame_size = sc->stts_data[0].duration;
1457
1458 638fd2fc Baptiste Coudurier
        if(st->duration != AV_NOPTS_VALUE){
1459
            assert(st->duration % sc->time_rate == 0);
1460
            st->duration /= sc->time_rate;
1461 75b5b631 Michael Niedermayer
        }
1462 05edc1a7 Baptiste Coudurier
        sc->ffindex = i;
1463 638fd2fc Baptiste Coudurier
        mov_build_index(mov, st);
1464 6cea494e Zdenek Kabelac
    }
1465 a2fe3b58 Baptiste Coudurier
1466 b72708f8 Baptiste Coudurier
    for(i=0; i<mov->total_streams; i++) {
1467 755bfeab Diego Biurrun
        /* Do not need those anymore. */
1468 b72708f8 Baptiste Coudurier
        av_freep(&mov->streams[i]->chunk_offsets);
1469
        av_freep(&mov->streams[i]->sample_to_chunk);
1470
        av_freep(&mov->streams[i]->sample_sizes);
1471
        av_freep(&mov->streams[i]->keyframes);
1472
        av_freep(&mov->streams[i]->stts_data);
1473
    }
1474
    av_freep(&mov->mdat_list);
1475 6cea494e Zdenek Kabelac
    return 0;
1476
}
1477
1478 a266644f Zdenek Kabelac
static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
1479 6cea494e Zdenek Kabelac
{
1480 b72708f8 Baptiste Coudurier
    MOVContext *mov = s->priv_data;
1481
    MOVStreamContext *sc = 0;
1482
    AVIndexEntry *sample = 0;
1483 86d8602f Michael Niedermayer
    int64_t best_dts = INT64_MAX;
1484 b72708f8 Baptiste Coudurier
    int i;
1485 3ffe3793 François Revol
1486 b72708f8 Baptiste Coudurier
    for (i = 0; i < mov->total_streams; i++) {
1487 bb270c08 Diego Biurrun
        MOVStreamContext *msc = mov->streams[i];
1488 86d8602f Michael Niedermayer
1489 b72708f8 Baptiste Coudurier
        if (s->streams[i]->discard != AVDISCARD_ALL && msc->current_sample < msc->sample_count) {
1490
            AVIndexEntry *current_sample = &s->streams[i]->index_entries[msc->current_sample];
1491
            int64_t dts = av_rescale(current_sample->timestamp * (int64_t)msc->time_rate, AV_TIME_BASE, msc->time_scale);
1492
1493 1c02d96f Baptiste Coudurier
            dprintf(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
1494 b72708f8 Baptiste Coudurier
            if (dts < best_dts) {
1495
                sample = current_sample;
1496
                best_dts = dts;
1497
                sc = msc;
1498 86d8602f Michael Niedermayer
            }
1499 6cea494e Zdenek Kabelac
        }
1500
    }
1501 b72708f8 Baptiste Coudurier
    if (!sample)
1502
        return -1;
1503
    /* must be done just before reading, to avoid infinite loop on sample */
1504
    sc->current_sample++;
1505 1f1890c7 Baptiste Coudurier
    if (sample->pos >= url_fsize(&s->pb)) {
1506 ccd3228e Dominik Mierzejewski
        av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n", sc->ffindex, sample->pos);
1507 bb270c08 Diego Biurrun
        return -1;
1508 6cea494e Zdenek Kabelac
    }
1509 312954f0 Baptiste Coudurier
#ifdef CONFIG_DV_DEMUXER
1510 b60c0454 Baptiste Coudurier
    if (sc->dv_audio_container) {
1511
        dv_get_packet(mov->dv_demux, pkt);
1512 318c5e05 Michel Bardiaux
        dprintf(s, "dv audio pkt size %d\n", pkt->size);
1513 b60c0454 Baptiste Coudurier
    } else {
1514 312954f0 Baptiste Coudurier
#endif
1515 b60c0454 Baptiste Coudurier
        url_fseek(&s->pb, sample->pos, SEEK_SET);
1516
        av_get_packet(&s->pb, pkt, sample->size);
1517 312954f0 Baptiste Coudurier
#ifdef CONFIG_DV_DEMUXER
1518 b60c0454 Baptiste Coudurier
        if (mov->dv_demux) {
1519
            void *pkt_destruct_func = pkt->destruct;
1520
            dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
1521
            pkt->destruct = pkt_destruct_func;
1522
        }
1523
    }
1524 312954f0 Baptiste Coudurier
#endif
1525 b72708f8 Baptiste Coudurier
    pkt->stream_index = sc->ffindex;
1526
    pkt->dts = sample->timestamp;
1527
    if (sc->ctts_data) {
1528
        assert(sc->ctts_data[sc->sample_to_ctime_index].duration % sc->time_rate == 0);
1529
        pkt->pts = pkt->dts + sc->ctts_data[sc->sample_to_ctime_index].duration / sc->time_rate;
1530
        /* update ctts context */
1531
        sc->sample_to_ctime_sample++;
1532
        if (sc->sample_to_ctime_index < sc->ctts_count && sc->ctts_data[sc->sample_to_ctime_index].count == sc->sample_to_ctime_sample) {
1533
            sc->sample_to_ctime_index++;
1534
            sc->sample_to_ctime_sample = 0;
1535 b565ea09 Baptiste Coudurier
        }
1536 b72708f8 Baptiste Coudurier
    } else {
1537
        pkt->pts = pkt->dts;
1538 b565ea09 Baptiste Coudurier
    }
1539 b72708f8 Baptiste Coudurier
    pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? PKT_FLAG_KEY : 0;
1540
    pkt->pos = sample->pos;
1541 318c5e05 Michel Bardiaux
    dprintf(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n", pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
1542 b72708f8 Baptiste Coudurier
    return 0;
1543
}
1544 3ffe3793 François Revol
1545 b72708f8 Baptiste Coudurier
static int mov_seek_stream(AVStream *st, int64_t timestamp, int flags)
1546
{
1547
    MOVStreamContext *sc = st->priv_data;
1548
    int sample, time_sample;
1549
    int i;
1550 115329f1 Diego Biurrun
1551 b72708f8 Baptiste Coudurier
    sample = av_index_search_timestamp(st, timestamp, flags);
1552 318c5e05 Michel Bardiaux
    dprintf(st->codec, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
1553 b72708f8 Baptiste Coudurier
    if (sample < 0) /* not sure what to do */
1554
        return -1;
1555
    sc->current_sample = sample;
1556 1c02d96f Baptiste Coudurier
    dprintf(st->codec, "stream %d, found sample %d\n", st->index, sc->current_sample);
1557 b72708f8 Baptiste Coudurier
    /* adjust ctts index */
1558
    if (sc->ctts_data) {
1559
        time_sample = 0;
1560
        for (i = 0; i < sc->ctts_count; i++) {
1561 54a5c719 Baptiste Coudurier
            int next = time_sample + sc->ctts_data[i].count;
1562
            if (next > sc->current_sample) {
1563 b72708f8 Baptiste Coudurier
                sc->sample_to_ctime_index = i;
1564 54a5c719 Baptiste Coudurier
                sc->sample_to_ctime_sample = sc->current_sample - time_sample;
1565 b72708f8 Baptiste Coudurier
                break;
1566 115329f1 Diego Biurrun
            }
1567 54a5c719 Baptiste Coudurier
            time_sample = next;
1568 247d56f5 Brian Becker
        }
1569
    }
1570 b72708f8 Baptiste Coudurier
    return sample;
1571 6cea494e Zdenek Kabelac
}
1572
1573 961e0ccd Michael Niedermayer
static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
1574 baf25c9d Gael Chardon
{
1575 b72708f8 Baptiste Coudurier
    AVStream *st;
1576
    int64_t seek_timestamp, timestamp;
1577
    int sample;
1578
    int i;
1579 baf25c9d Gael Chardon
1580 b72708f8 Baptiste Coudurier
    if (stream_index >= s->nb_streams)
1581 baf25c9d Gael Chardon
        return -1;
1582
1583 b72708f8 Baptiste Coudurier
    st = s->streams[stream_index];
1584
    sample = mov_seek_stream(st, sample_time, flags);
1585
    if (sample < 0)
1586 baf25c9d Gael Chardon
        return -1;
1587
1588 b72708f8 Baptiste Coudurier
    /* adjust seek timestamp to found sample timestamp */
1589
    seek_timestamp = st->index_entries[sample].timestamp;
1590 baf25c9d Gael Chardon
1591 b72708f8 Baptiste Coudurier
    for (i = 0; i < s->nb_streams; i++) {
1592
        st = s->streams[i];
1593
        if (stream_index == i || st->discard == AVDISCARD_ALL)
1594
            continue;
1595 baf25c9d Gael Chardon
1596 b72708f8 Baptiste Coudurier
        timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
1597
        mov_seek_stream(st, timestamp, flags);
1598 115329f1 Diego Biurrun
    }
1599 baf25c9d Gael Chardon
    return 0;
1600
}
1601
1602 a266644f Zdenek Kabelac
static int mov_read_close(AVFormatContext *s)
1603 6cea494e Zdenek Kabelac
{
1604
    int i;
1605 e4141433 Nicholas Tung
    MOVContext *mov = s->priv_data;
1606 4440b118 Baptiste Coudurier
    for(i=0; i<mov->total_streams; i++) {
1607
        av_freep(&mov->streams[i]->ctts_data);
1608
        av_freep(&mov->streams[i]);
1609
    }
1610 b60c0454 Baptiste Coudurier
    if(mov->dv_demux){
1611
        for(i=0; i<mov->dv_fctx->nb_streams; i++){
1612
            av_freep(&mov->dv_fctx->streams[i]->codec);
1613
            av_freep(&mov->dv_fctx->streams[i]);
1614
        }
1615
        av_freep(&mov->dv_fctx);
1616
        av_freep(&mov->dv_demux);
1617
    }
1618 6cea494e Zdenek Kabelac
    return 0;
1619
}
1620
1621 ff70e601 Måns Rullgård
AVInputFormat mov_demuxer = {
1622 fc5188f3 Baptiste Coudurier
    "mov,mp4,m4a,3gp,3g2,mj2",
1623
    "QuickTime/MPEG4/Motion JPEG 2000 format",
1624 c9a65ca8 Fabrice Bellard
    sizeof(MOVContext),
1625
    mov_probe,
1626 6cea494e Zdenek Kabelac
    mov_read_header,
1627
    mov_read_packet,
1628
    mov_read_close,
1629 baf25c9d Gael Chardon
    mov_read_seek,
1630 6cea494e Zdenek Kabelac
};