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1
/*
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 * MOV decoder.
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 * Copyright (c) 2001 Gerard Lantau.
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; either version 2 of the License, or
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 * (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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 */
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#include "avformat.h"
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#include "avi.h"
21

    
22
/*
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 * First version by Francois Revol revol@free.fr
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 * 
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 * Features and limitations:
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 * - reads most of the QT files I have (at least the structure), 
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 *   the exceptions are .mov with zlib compressed headers ('cmov' section). It shouldn't be hard to implement.
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 * - ffmpeg has nearly none of the usual QuickTime codecs,
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 *   although I succesfully dumped raw and mp3 audio tracks off .mov files.
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 *   Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html
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 * - .mp4 parsing is still hazardous, although the format really is QuickTime with some minor changes
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 *   (to make .mov parser crash maybe ?), despite what they say in the MPEG FAQ at
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 *   http://mpeg.telecomitalialab.com/faq.htm
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 * - the code is quite ugly... maybe I won't do it recursive next time :-)
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 * 
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 * Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/
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 * when coding this :) (it's a writer anyway)
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 * 
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 * Reference documents:
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 * http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
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 * Apple:
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 *  http://developer.apple.com/techpubs/quicktime/qtdevdocs/QTFF/qtff.html
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 *  http://developer.apple.com/techpubs/quicktime/qtdevdocs/PDF/QTFileFormat.pdf
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 * QuickTime is a trademark of Apple (AFAIK :))
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 */
46

    
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#define DEBUG
48

    
49
#ifdef DEBUG
50
/*
51
 * XXX: static sux, even more in a multithreaded environment...
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 * Avoid them. This is here just to help debugging.
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 */
54
static int debug_indent = 0;
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void print_atom(const char *str, UINT32 type, UINT64 offset, UINT64 size)
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{
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    unsigned int tag, i;
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    tag = (unsigned int) type;
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    i=debug_indent;
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    if(tag == 0) tag = MKTAG('N', 'U', 'L', 'L');
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    while(i--)
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        printf("|");
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    printf("parse:");
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    printf(" %s: tag=%c%c%c%c offset=%d size=0x%x\n",
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           str, tag & 0xff,
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           (tag >> 8) & 0xff,
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           (tag >> 16) & 0xff,
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           (tag >> 24) & 0xff,
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           (unsigned int)offset,
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           (unsigned int)size);
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}
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#endif
73

    
74
/* some streams in QT (and in MP4 mostly) aren't either video nor audio */
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/* so we first list them as this, then clean up the list of streams we give back, */
76
/* getting rid of these */
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#define CODEC_TYPE_MOV_OTHER 2
78

    
79
CodecTag mov_video_tags[] = {
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/*  { CODEC_ID_, MKTAG('c', 'v', 'i', 'd') }, *//* Cinepak */
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/*  { CODEC_ID_JPEG, MKTAG('j', 'p', 'e', 'g') }, *//* JPEG */
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    { CODEC_ID_H263, MKTAG('r', 'a', 'w', ' ') }, /* Uncompressed RGB */
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    { CODEC_ID_H263, MKTAG('Y', 'u', 'v', '2') }, /* Uncompressed YUV422 */
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/* Graphics */
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/* Animation */
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/* Apple video */
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/* Kodak Photo CD */
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/*    { CODEC_ID_JPEG, MKTAG('j', 'p', 'e', 'g') }, *//* JPEG ? */
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    { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'e', 'g') }, /* MPEG */
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    { CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'b') }, /* Motion-JPEG (format A) */
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    { CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'b') }, /* Motion-JPEG (format B) */
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/*    { CODEC_ID_GIF, MKTAG('g', 'i', 'f', ' ') }, *//* embedded gif files as frames (usually one "click to play movie" frame) */
93
/* Sorenson video */
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    { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') }, /* OpenDiVX *//* yeah ! */
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    { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') }, /* OpenDiVX *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
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/*    { CODEC_ID_, MKTAG('I', 'V', '5', '0') }, *//* Indeo 5.0 */
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    { 0, 0 }, 
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};
99

    
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CodecTag mov_audio_tags[] = {
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/*    { CODEC_ID_PCM_S16BE, MKTAG('N', 'O', 'N', 'E') }, *//* uncompressed */
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    { CODEC_ID_PCM_S16BE, MKTAG('t', 'w', 'o', 's') }, /* 16 bits */
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    { CODEC_ID_PCM_S8, MKTAG('t', 'w', 'o', 's') }, /* 8 bits */
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    { CODEC_ID_PCM_U8, 0x20776172 }, /* 8 bits unsigned */
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    { CODEC_ID_PCM_S16LE, MKTAG('s', 'o', 'w', 't') }, /*  */
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    { CODEC_ID_PCM_MULAW, MKTAG('u', 'l', 'a', 'w') }, /*  */
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    { CODEC_ID_PCM_ALAW, MKTAG('a', 'l', 'a', 'w') }, /*  */
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/*    { CODEC_ID_, MKTAG('i', 'm', 'a', '4') }, *//* IMA-4 */
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    { CODEC_ID_MP2, MKTAG('.', 'm', 'p', '3') }, /* MPEG layer 3 */ /* sample files at http://www.3ivx.com/showcase.html use this tag */
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    { CODEC_ID_MP2, 0x6D730055 }, /* MPEG layer 3 */
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    { CODEC_ID_MP2, 0x5500736D }, /* MPEG layer 3 *//* XXX: check endianness */
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/*    { CODEC_ID_OGG_VORBIS, MKTAG('O', 'g', 'g', 'S') }, *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
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/* MP4 tags */
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/*    { CODEC_ID_AAC, MKTAG('m', 'p', '4', 'a') }, *//* MPEG 4 AAC or audio ? */
116
                                                     /* The standard for mpeg4 audio is still not normalised AFAIK anyway */
117
    { 0, 0 }, 
118
};
119

    
120
/* the QuickTime file format is quite convoluted...
121
 * it has lots of index tables, each indexing something in another one...
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 * Here we just use what is needed to read the chunks
123
 */
124

    
125
typedef struct MOV_sample_to_chunk_tbl {
126
    long first;
127
    long count;
128
    long id;
129
} MOV_sample_to_chunk_tbl;
130

    
131
typedef struct MOVStreamContext {
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    int ffindex; /* the ffmpeg stream id */
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    int is_ff_stream; /* Is this stream presented to ffmpeg ? i.e. is this an audio or video stream ? */
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    long next_chunk;
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    long chunk_count;
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    INT64 *chunk_offsets;
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    long sample_to_chunk_sz;
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    MOV_sample_to_chunk_tbl *sample_to_chunk;
139
    long sample_size;
140
    long sample_count;
141
    long *sample_sizes;
142
} MOVStreamContext;
143

    
144
typedef struct MOVContext {
145
    int mp4; /* set to 1 as soon as we are sure that the file is an .mp4 file (even some header parsing depends on this) */
146
    AVFormatContext *fc;
147
    long time_scale;
148
    int found_moov; /* when both 'moov' and 'mdat' sections has been found */
149
    int found_mdat; /* we suppose we have enough data to read the file */
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    INT64 mdat_size;
151
    INT64 mdat_offset;
152
    int total_streams;
153
    /* some streams listed here aren't presented to the ffmpeg API, since they aren't either video nor audio
154
     * but we need the info to be able to skip data from those streams in the 'mdat' section
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     */
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    MOVStreamContext *streams[MAX_STREAMS];
157
    
158
    INT64 next_chunk_offset;
159
} MOVContext;
160

    
161

    
162
struct MOVParseTableEntry;
163

    
164
/* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
165

    
166
/* those functions parse an atom */
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/* return code:
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 1: found what I wanted, exit
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 0: continue to parse next atom
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 -1: error occured, exit
171
 */
172
typedef int (*mov_parse_function)(const struct MOVParseTableEntry *parse_table,
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                                  ByteIOContext *pb,
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                                  UINT32 atom_type,
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                                  INT64 atom_offset, /* after the size and type field (and eventually the extended size) */
176
                                  INT64 atom_size, /* total size (excluding the size and type fields) */
177
                                  void *param);
178

    
179
/* links atom IDs to parse functions */
180
typedef struct MOVParseTableEntry {
181
    UINT32 type;
182
    mov_parse_function func;
183
} MOVParseTableEntry;
184

    
185
static int parse_leaf(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
186
{
187
#ifdef DEBUG
188
    print_atom("leaf", atom_type, atom_offset, atom_size);
189
#endif
190
    if(atom_size>1)
191
        url_fskip(pb, atom_size);
192
/*        url_seek(pb, atom_offset+atom_size, SEEK_SET); */
193
    return 0;
194
}
195

    
196

    
197
static int parse_default(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
198
{
199
    UINT32 type, foo=0;
200
    UINT64 offset, size;
201
    UINT64 total_size = 0;
202
    int i;
203
    int err = 0;
204
    foo=0;
205
#ifdef DEBUG
206
    print_atom("default", atom_type, atom_offset, atom_size);
207
    debug_indent++;
208
#endif
209
    
210
    offset = atom_offset;
211

    
212
    if(atom_size < 0)
213
        atom_size = 0x0FFFFFFFFFFFFFFF;
214
    while((total_size < atom_size) && !url_feof(pb) && !err) {
215
        size=atom_size;
216
        type=0L;
217
        if(atom_size >= 8) {
218
            size = get_be32(pb);
219
            type = get_le32(pb);
220
        }
221
        total_size += 8;
222
        offset+=8;
223
//        printf("type: %08lx  sz: %08lx", type, size);
224
        if(size == 1) { /* 64 bit extended size */
225
            size = get_be64(pb);
226
            offset+=8;
227
            total_size+=8;
228
            size-=8;
229
        }
230
        if(size == 0)
231
            size = atom_size - total_size;
232
        size-=8;
233
        for(i=0; parse_table[i].type != 0L && parse_table[i].type != type; i++);
234
        
235
//        printf(" i=%ld\n", i);
236
        if (parse_table[i].type == 0) { /* skip leaf atoms data */
237
//            url_seek(pb, atom_offset+atom_size, SEEK_SET);
238
#ifdef DEBUG
239
            print_atom("unknown", type, offset, size);
240
#endif
241
            url_fskip(pb, size);
242
        } else
243
            err = (parse_table[i].func)(parse_table, pb, type, offset, size, param);
244

    
245
        offset+=size;
246
        total_size+=size;
247
    }
248

    
249
#ifdef DEBUG
250
    debug_indent--;
251
#endif
252
    return err;
253
}
254

    
255
static int parse_mvhd(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
256
{
257
    MOVContext *c;
258
#ifdef DEBUG
259
    print_atom("mvhd", atom_type, atom_offset, atom_size);
260
#endif
261
    c = (MOVContext *)param;
262

    
263
    get_byte(pb); /* version */
264
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
265

    
266
    get_be32(pb); /* creation time */
267
    get_be32(pb); /* modification time */
268
    c->time_scale = get_be32(pb); /* time scale */
269
    get_be32(pb); /* duration */
270
    get_be32(pb); /* preferred scale */
271
    
272
    get_be16(pb); /* preferred volume */
273

    
274
    url_fskip(pb, 10); /* reserved */
275

    
276
    url_fskip(pb, 36); /* display matrix */
277

    
278
    get_be32(pb); /* preview time */
279
    get_be32(pb); /* preview duration */
280
    get_be32(pb); /* poster time */
281
    get_be32(pb); /* selection time */
282
    get_be32(pb); /* selection duration */
283
    get_be32(pb); /* current time */
284
    get_be32(pb); /* next track ID */
285
    
286
    return 0;
287
}
288

    
289
/* this atom should contain all header atoms */
290
static int parse_moov(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
291
{
292
    int err;
293
    MOVContext *c;
294
#ifdef DEBUG
295
    print_atom("moov", atom_type, atom_offset, atom_size);
296
#endif
297
    c = (MOVContext *)param;
298

    
299
    err = parse_default(parse_table, pb, atom_type, atom_offset, atom_size, param);
300
    /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
301
    /* so we don't parse the whole file if over a network */
302
    c->found_moov=1;
303
    if(c->found_mdat)
304
        return 1; /* found both, just go */
305
    return 0; /* now go for mdat */
306
}
307

    
308
/* this atom contains actual media data */
309
static int parse_mdat(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
310
{
311
    MOVContext *c;
312
#ifdef DEBUG
313
    print_atom("mdat", atom_type, atom_offset, atom_size);
314
#endif
315
    c = (MOVContext *)param;
316

    
317
    if(atom_size == 0) /* wrong one (MP4) */
318
        return 0;
319
    c->found_mdat=1;
320
    c->mdat_offset = atom_offset;
321
    c->mdat_size = atom_size;
322
    if(c->found_moov)
323
        return 1; /* found both, just go */
324
    url_fskip(pb, atom_size);
325
    return 0; /* now go for moov */
326
}
327

    
328
static int parse_trak(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
329
{
330
    MOVContext *c;
331
    AVStream *st;
332
    MOVStreamContext *sc;
333
#ifdef DEBUG
334
    print_atom("trak", atom_type, atom_offset, atom_size);
335
#endif
336

    
337
    c = (MOVContext *)param;
338
    st = malloc(sizeof(AVStream));
339
        if (!st) return -2;
340
    memset(st, 0, sizeof(AVStream));
341
    c->fc->streams[c->fc->nb_streams] = st;
342
    sc = malloc(sizeof(MOVStreamContext));
343
    st->priv_data = sc;
344
    st->codec.codec_type = CODEC_TYPE_MOV_OTHER;
345
    c->streams[c->fc->nb_streams++] = sc;
346
    return parse_default(parse_table, pb, atom_type, atom_offset, atom_size, param);
347
}
348

    
349
static int parse_tkhd(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
350
{
351
    MOVContext *c;
352
    AVStream *st;
353
#ifdef DEBUG
354
    print_atom("tkhd", atom_type, atom_offset, atom_size);
355
#endif
356

    
357
    c = (MOVContext *)param;
358
    st = c->fc->streams[c->fc->nb_streams-1];
359
    
360
    get_byte(pb); /* version */
361

    
362
    get_byte(pb); get_byte(pb);
363
    get_byte(pb); /* flags */
364
    /*
365
    MOV_TRACK_ENABLED 0x0001
366
    MOV_TRACK_IN_MOVIE 0x0002
367
    MOV_TRACK_IN_PREVIEW 0x0004
368
    MOV_TRACK_IN_POSTER 0x0008
369
    */
370

    
371
    get_be32(pb); /* creation time */
372
    get_be32(pb); /* modification time */
373
    st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
374
    get_be32(pb); /* reserved */
375
    get_be32(pb); /* duration */
376
    get_be32(pb); /* reserved */
377
    get_be32(pb); /* reserved */
378
    
379
    get_be16(pb); /* layer */
380
    get_be16(pb); /* alternate group */
381
    get_be16(pb); /* volume */
382
    get_be16(pb); /* reserved */
383

    
384
    url_fskip(pb, 36); /* display matrix */
385

    
386
    /* those are fixed-point */
387
    st->codec.width = get_be32(pb) >> 16; /* track width */
388
    st->codec.height = get_be32(pb) >> 16; /* track height */
389
    
390
    return 0;
391
}
392

    
393
static int parse_hdlr(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
394
{
395
    MOVContext *c;
396
    int len;
397
    char *buf, ch;
398
    UINT32 type;
399
    AVStream *st;
400
    UINT32 ctype;
401
#ifdef DEBUG
402
    print_atom("hdlr", atom_type, atom_offset, atom_size);
403
#endif
404
    c = (MOVContext *)param;
405
    st = c->fc->streams[c->fc->nb_streams-1];
406

    
407
    get_byte(pb); /* version */
408
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
409

    
410
    /* component type */
411
    ctype = get_le32(pb);
412
    type = get_le32(pb); /* component subtype */
413

    
414
#ifdef DEBUG
415
    printf("ctype= %c%c%c%c (0x%08lx)\n", *((char *)&ctype), ((char *)&ctype)[1], ((char *)&ctype)[2], ((char *)&ctype)[3], (long) ctype);
416
    printf("stype= %c%c%c%c\n", *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
417
#endif
418
#ifdef DEBUG
419
/* XXX: yeah this is ugly... */
420
    if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */
421
        if(type == MKTAG('v', 'i', 'd', 'e'))
422
            puts("hdlr: vide");
423
        else if(type == MKTAG('s', 'o', 'u', 'n'))
424
            puts("hdlr: soun");
425
    } else if(ctype == 0) { /* MP4 */
426
        if(type == MKTAG('v', 'i', 'd', 'e'))
427
            puts("hdlr: vide");
428
        else if(type == MKTAG('s', 'o', 'u', 'n'))
429
            puts("hdlr: soun");
430
        else if(type == MKTAG('o', 'd', 's', 'm'))
431
            puts("hdlr: odsm");
432
        else if(type == MKTAG('s', 'd', 's', 'm'))
433
            puts("hdlr: sdsm");
434
    } else puts("hdlr: meta");
435
#endif
436

    
437
    if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */
438
        if(type == MKTAG('v', 'i', 'd', 'e'))
439
            st->codec.codec_type = CODEC_TYPE_VIDEO;
440
        else if(type == MKTAG('s', 'o', 'u', 'n'))
441
            st->codec.codec_type = CODEC_TYPE_AUDIO;
442
    } else if(ctype == 0) { /* MP4 */
443
        if(type == MKTAG('v', 'i', 'd', 'e'))
444
            st->codec.codec_type = CODEC_TYPE_VIDEO;
445
        else if(type == MKTAG('s', 'o', 'u', 'n'))
446
            st->codec.codec_type = CODEC_TYPE_AUDIO;
447
    }
448
    get_be32(pb); /* component  manufacture */
449
    get_be32(pb); /* component flags */
450
    get_be32(pb); /* component flags mask */
451

    
452
    if(atom_size <= 24)
453
        return 0; /* nothing left to read */
454
    /* XXX: MP4 uses a C string, not a pascal one */
455
    /* component name */
456
    if(c->mp4) {
457
#ifdef DEBUG
458
        puts("MP4!!!");
459
#endif
460
        while ((ch = get_byte(pb)));
461
    } else {
462
        len = get_byte(pb);
463
        if(len) {
464
            buf = malloc(len+1);
465
            get_buffer(pb, buf, len);
466
            buf[len] = '\0';
467
#ifdef DEBUG
468
            puts(buf);
469
#endif
470
            free(buf);
471
        }
472
    }
473
    
474
    return 0;
475
}
476

    
477
static int parse_stsd(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
478
{
479
    MOVContext *c;
480
    int entries, size, samp_sz, frames_per_sample;
481
    UINT32 format;
482
    AVStream *st;
483
#ifdef DEBUG
484
    print_atom("stsd", atom_type, atom_offset, atom_size);
485
#endif
486
    c = (MOVContext *)param;
487
    st = c->fc->streams[c->fc->nb_streams-1];
488

    
489
    get_byte(pb); /* version */
490
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
491

    
492

    
493
    entries = get_be32(pb);
494

    
495
    while(entries--) {
496
        size = get_be32(pb); /* size */
497
        format = get_le32(pb); /* data format */
498
        
499
        get_be32(pb); /* reserved */
500
        get_be16(pb); /* reserved */
501
        get_be16(pb); /* index */
502
/*        if(format == MKTAG('m', 'p', '4', 'v')) */
503
/*            st->codec.codec_type=CODEC_TYPE_VIDEO; *//* force things (XXX: was this for .mp4 ?) */
504
        if(st->codec.codec_type==CODEC_TYPE_VIDEO) {
505
            st->codec.codec_tag = format;
506
            st->codec.codec_id = codec_get_id(mov_video_tags, format);
507
            get_be16(pb); /* version */
508
            get_be16(pb); /* revision level */
509
            get_be32(pb); /* vendor */
510
            get_be32(pb); /* temporal quality */
511
            get_be32(pb); /* spacial quality */
512
            st->codec.width = get_be16(pb); /* width */
513
            st->codec.height = get_be16(pb); /* height */
514
            get_be32(pb); /* horiz resolution */
515
            get_be32(pb); /* vert resolution */
516
            get_be32(pb); /* data size, always 0 */
517
            frames_per_sample = get_be16(pb); /* frame per samples */
518
#ifdef DEBUG
519
            printf("frames/samples = %d\n", frames_per_sample);
520
#endif
521
            url_fskip(pb, 32); /* codec name */
522

    
523
            get_be16(pb); /* depth */
524
            get_be16(pb); /* colortable id */
525
            get_be16(pb); /*  */
526
            get_be16(pb); /*  */
527
            
528
            st->codec.sample_rate = 25 * FRAME_RATE_BASE;
529
            
530
            if(size > 16)
531
                url_fskip(pb, size-(16+24+18+32));
532
        } else {
533
            st->codec.codec_tag = format;
534

    
535
            get_be16(pb); /* version */
536
            get_be16(pb); /* revision level */
537
            get_be32(pb); /* vendor */
538

    
539
            st->codec.channels = get_be16(pb);/* channel count */
540
            samp_sz = get_be16(pb); /* sample size */
541
#ifdef DEBUG
542
            if(samp_sz != 16)
543
                puts("!!! stsd: audio sample size is not 16 bit !");
544
#endif            
545
            st->codec.codec_id = codec_get_id(mov_audio_tags, format);
546
            /* handle specific s8 codec */
547
            if (st->codec.codec_id == CODEC_ID_PCM_S16BE && samp_sz == 8)
548
            st->codec.codec_id = CODEC_ID_PCM_S8;
549

    
550
            get_be16(pb); /* compression id = 0*/
551
            get_be16(pb); /* packet size = 0 */
552
            
553
            st->codec.sample_rate = ((get_be32(pb) >> 16));
554
            st->codec.bit_rate = 0;
555

    
556
            /* this is for .mp4 files */
557
            if(format == MKTAG('m', 'p', '4', 'v')) { /* XXX */
558
                st->codec.codec_type=CODEC_TYPE_VIDEO; /* force things */
559
                st->codec.codec_id = CODEC_ID_MPEG4;
560
                st->codec.frame_rate = 25;
561
                st->codec.bit_rate = 100000;
562
            }
563

    
564
#if 0
565

566
            get_be16(pb); get_be16(pb); /*  */
567
            get_be16(pb); /*  */
568
            get_be16(pb); /*  */
569
            get_be16(pb); /*  */
570
            get_be16(pb); /*  */
571
#endif            
572
            if(size > 16)
573
                url_fskip(pb, size-(16+20));
574
        }
575
#ifdef DEBUG
576
        printf("4CC= %c%c%c%c\n", *((char *)&format), ((char *)&format)[1], ((char *)&format)[2], ((char *)&format)[3]);
577
#endif
578
    }
579
/*
580
    if(len) {
581
        buf = malloc(len+1);
582
        get_buffer(pb, buf, len);
583
        buf[len] = '\0';
584
        puts(buf);
585
        free(buf);
586
    }
587
*/
588
    return 0;
589
}
590

    
591
static int parse_stco(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
592
{
593
    MOVContext *c;
594
    int entries, i;
595
    AVStream *st;
596
    MOVStreamContext *sc;
597
#ifdef DEBUG
598
    print_atom("stco", atom_type, atom_offset, atom_size);
599
#endif
600
    c = (MOVContext *)param;
601
    st = c->fc->streams[c->fc->nb_streams-1];
602
    sc = (MOVStreamContext *)st->priv_data;
603
    
604
    get_byte(pb); /* version */
605
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
606

    
607
    entries = get_be32(pb);
608
    sc->chunk_count = entries;
609
    sc->chunk_offsets = malloc(entries * sizeof(INT64));
610
    if(atom_type == MKTAG('s', 't', 'c', 'o')) {
611
        for(i=0; i<entries; i++) {
612
            sc->chunk_offsets[i] = get_be32(pb);
613
            /*printf("chunk offset=%ld\n", sc->chunk_offsets[i]);*/
614
        }
615
    } else if(atom_type == MKTAG('c', 'o', '6', '4')) {
616
        for(i=0; i<entries; i++) {
617
            sc->chunk_offsets[i] = get_be64(pb);
618
            /*printf("chunk offset=%ld\n", sc->chunk_offsets[i]);*/
619
        }
620
    } else
621
        return -1;
622
    return 0;
623
}
624

    
625
static int parse_stsc(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
626
{
627
    MOVContext *c;
628
    int entries, i;
629
    AVStream *st;
630
    MOVStreamContext *sc;
631
#ifdef DEBUG
632
    print_atom("stsc", atom_type, atom_offset, atom_size);
633
#endif
634
    c = (MOVContext *)param;
635
    st = c->fc->streams[c->fc->nb_streams-1];
636
    sc = (MOVStreamContext *)st->priv_data;
637
    
638
    get_byte(pb); /* version */
639
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
640

    
641
    entries = get_be32(pb);
642
    sc->sample_to_chunk_sz = entries;
643
    sc->sample_to_chunk = malloc(entries * sizeof(MOV_sample_to_chunk_tbl));
644
    for(i=0; i<entries; i++) {
645
        sc->sample_to_chunk[i].first = get_be32(pb);
646
        sc->sample_to_chunk[i].count = get_be32(pb);
647
        sc->sample_to_chunk[i].id = get_be32(pb);
648
#ifdef DEBUG
649
/*        printf("sample_to_chunk first=%ld count=%ld, id=%ld\n", sc->sample_to_chunk[i].first, sc->sample_to_chunk[i].count, sc->sample_to_chunk[i].id); */
650
#endif
651
    }
652
    return 0;
653
}
654

    
655
static int parse_stsz(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
656
{
657
    MOVContext *c;
658
    int entries, i;
659
    AVStream *st;
660
    MOVStreamContext *sc;
661
#ifdef DEBUG
662
    print_atom("stsz", atom_type, atom_offset, atom_size);
663
#endif
664
    c = (MOVContext *)param;
665
    st = c->fc->streams[c->fc->nb_streams-1];
666
    sc = (MOVStreamContext *)st->priv_data;
667
    
668
    get_byte(pb); /* version */
669
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
670
    
671
    sc->sample_size = get_be32(pb);
672
    entries = get_be32(pb);
673
    sc->sample_count = entries;
674
    printf("sample_size = %ld sample_count = %ld\n", sc->sample_size, sc->sample_count);
675
    if(sc->sample_size)
676
        return 0; /* there isn't any table following */
677
    sc->sample_sizes = malloc(entries * sizeof(long));
678
    for(i=0; i<entries; i++) {
679
        sc->sample_sizes[i] = get_be32(pb);
680
#ifdef DEBUG
681
/*        printf("sample_sizes[]=%ld\n", sc->sample_sizes[i]); */
682
#endif
683
    }
684
    return 0;
685
}
686

    
687
static const MOVParseTableEntry mov_default_parse_table[] = {
688
/* mp4 atoms */
689
{ MKTAG( 'm', 'p', '4', 'a' ), parse_default },
690
{ MKTAG( 'c', 'o', '6', '4' ), parse_stco },
691
{ MKTAG( 's', 't', 'c', 'o' ), parse_stco },
692
{ MKTAG( 'c', 'r', 'h', 'd' ), parse_default },
693
{ MKTAG( 'c', 't', 't', 's' ), parse_leaf },
694
{ MKTAG( 'c', 'p', 'r', 't' ), parse_default },
695
{ MKTAG( 'u', 'r', 'l', ' ' ), parse_leaf },
696
{ MKTAG( 'u', 'r', 'n', ' ' ), parse_leaf },
697
{ MKTAG( 'd', 'i', 'n', 'f' ), parse_default },
698
{ MKTAG( 'd', 'r', 'e', 'f' ), parse_leaf },
699
{ MKTAG( 's', 't', 'd', 'p' ), parse_default },
700
{ MKTAG( 'e', 's', 'd', 's' ), parse_default },
701
{ MKTAG( 'e', 'd', 't', 's' ), parse_default },
702
{ MKTAG( 'e', 'l', 's', 't' ), parse_leaf },
703
{ MKTAG( 'u', 'u', 'i', 'd' ), parse_default },
704
{ MKTAG( 'f', 'r', 'e', 'e' ), parse_leaf },
705
{ MKTAG( 'h', 'd', 'l', 'r' ), parse_hdlr },
706
{ MKTAG( 'h', 'm', 'h', 'd' ), parse_default },
707
{ MKTAG( 'h', 'i', 'n', 't' ), parse_leaf },
708
{ MKTAG( 'n', 'm', 'h', 'd' ), parse_leaf },
709
{ MKTAG( 'm', 'p', '4', 's' ), parse_default },
710
{ MKTAG( 'm', 'd', 'i', 'a' ), parse_default },
711
{ MKTAG( 'm', 'd', 'a', 't' ), parse_mdat },
712
{ MKTAG( 'm', 'd', 'h', 'd' ), parse_leaf },
713
{ MKTAG( 'm', 'i', 'n', 'f' ), parse_default },
714
{ MKTAG( 'm', 'o', 'o', 'v' ), parse_moov },
715
{ MKTAG( 'm', 'v', 'h', 'd' ), parse_mvhd },
716
{ MKTAG( 'i', 'o', 'd', 's' ), parse_leaf },
717
{ MKTAG( 'o', 'd', 'h', 'd' ), parse_default },
718
{ MKTAG( 'm', 'p', 'o', 'd' ), parse_leaf },
719
{ MKTAG( 's', 't', 's', 'd' ), parse_stsd },
720
{ MKTAG( 's', 't', 's', 'z' ), parse_stsz },
721
{ MKTAG( 's', 't', 'b', 'l' ), parse_default },
722
{ MKTAG( 's', 't', 's', 'c' ), parse_stsc },
723
{ MKTAG( 's', 'd', 'h', 'd' ), parse_default },
724
{ MKTAG( 's', 't', 's', 'h' ), parse_default },
725
{ MKTAG( 's', 'k', 'i', 'p' ), parse_default },
726
{ MKTAG( 's', 'm', 'h', 'd' ), parse_leaf },
727
{ MKTAG( 'd', 'p', 'n', 'd' ), parse_leaf },
728
{ MKTAG( 's', 't', 's', 's' ), parse_leaf },
729
{ MKTAG( 's', 't', 't', 's' ), parse_leaf },
730
{ MKTAG( 't', 'r', 'a', 'k' ), parse_trak },
731
{ MKTAG( 't', 'k', 'h', 'd' ), parse_tkhd },
732
{ MKTAG( 't', 'r', 'e', 'f' ), parse_default }, /* not really */
733
{ MKTAG( 'u', 'd', 't', 'a' ), parse_leaf },
734
{ MKTAG( 'v', 'm', 'h', 'd' ), parse_leaf },
735
{ MKTAG( 'm', 'p', '4', 'v' ), parse_default },
736
/* extra mp4 */
737
{ MKTAG( 'M', 'D', 'E', 'S' ), parse_leaf },
738
/* QT atoms */
739
{ MKTAG( 'c', 'h', 'a', 'p' ), parse_leaf },
740
{ MKTAG( 'c', 'l', 'i', 'p' ), parse_default },
741
{ MKTAG( 'c', 'r', 'g', 'n' ), parse_leaf },
742
{ MKTAG( 'k', 'm', 'a', 't' ), parse_leaf },
743
{ MKTAG( 'm', 'a', 't', 't' ), parse_default },
744
{ MKTAG( 'r', 'd', 'r', 'f' ), parse_leaf },
745
{ MKTAG( 'r', 'm', 'd', 'a' ), parse_default },
746
{ MKTAG( 'r', 'm', 'd', 'r' ), parse_leaf },
747
//{ MKTAG( 'r', 'm', 'q', 'u' ), parse_leaf },
748
{ MKTAG( 'r', 'm', 'r', 'a' ), parse_default },
749
{ MKTAG( 's', 'c', 'p', 't' ), parse_leaf },
750
{ MKTAG( 's', 'y', 'n', 'c' ), parse_leaf },
751
{ MKTAG( 's', 's', 'r', 'c' ), parse_leaf },
752
{ MKTAG( 't', 'c', 'm', 'd' ), parse_leaf },
753
{ MKTAG( 'w', 'i', 'd', 'e' ), parse_leaf }, /* place holder */
754
{ 0L, parse_leaf }
755
};
756

    
757
static void mov_free_stream_context(MOVStreamContext *sc)
758
{
759
    if(sc) {
760
        if(sc->chunk_offsets)
761
            free(sc->chunk_offsets);
762
        if(sc->sample_to_chunk)
763
            free(sc->sample_to_chunk);
764
        free(sc);
765
    }
766
}
767

    
768
int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
769
{
770
    MOVContext *mov;
771
    ByteIOContext *pb = &s->pb;
772
    int i, j, nb, err;
773
    INT64 size;
774

    
775
    mov = malloc(sizeof(MOVContext));
776
    if (!mov)
777
        return -1;
778
    memset(mov, 0, sizeof(MOVContext));
779
    s->priv_data = mov;
780

    
781
    mov->fc = s;
782
    if(s->format->name[1] == 'p')
783
        mov->mp4 = 1;
784
    if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
785
        size = url_filesize(url_fileno(pb));
786
    else
787
        size = 0x7FFFFFFFFFFFFFFF;
788

    
789
#ifdef DEBUG
790
    printf("filesz=%Ld\n", size);
791
#endif
792

    
793
    /* check MOV header */
794
    err = parse_default(mov_default_parse_table, pb, 0L, 0LL, size, mov);
795
    if(err<0 || (!mov->found_moov || !mov->found_mdat)) {
796
        puts("header not found !!!");
797
        exit(1);
798
    }
799
#ifdef DEBUG
800
    printf("on_parse_exit_offset=%d\n", (int) url_ftell(pb));
801
#endif
802
    /* some cleanup : make sure we are on the mdat atom */
803
    if(!url_is_streamed(pb) && (url_ftell(pb) != mov->mdat_offset))
804
        url_fseek(pb, mov->mdat_offset, SEEK_SET);
805

    
806
    mov->next_chunk_offset = mov->mdat_offset; /* initialise reading */
807

    
808
#ifdef DEBUG
809
    printf("mdat_reset_offset=%d\n", (int) url_ftell(pb));
810
#endif
811

    
812
#ifdef DEBUG
813
    printf("streams= %d\n", s->nb_streams);
814
#endif
815
    mov->total_streams = nb = s->nb_streams;
816
    
817
#if 1
818
    for(i=0; i<s->nb_streams;) {
819
        if(s->streams[i]->codec.codec_type == CODEC_TYPE_MOV_OTHER) {/* not audio, not video, delete */
820
            free(s->streams[i]);
821
            for(j=i+1; j<s->nb_streams; j++)
822
                s->streams[j-1] = s->streams[j];
823
            s->nb_streams--;
824
        } else
825
            i++;
826
    }
827
    for(i=0; i<s->nb_streams;i++) {
828
        MOVStreamContext *sc;
829
        sc = (MOVStreamContext *)s->streams[i]->priv_data;
830
        sc->ffindex = i;
831
        sc->is_ff_stream = 1;
832
    }
833
#endif
834
#ifdef DEBUG
835
    printf("real streams= %d\n", s->nb_streams);
836
#endif
837
    return 0;
838
}
839

    
840
/* Yes, this is ugly... I didn't write the specs of QT :p */
841
/* XXX:remove useless commented code sometime */
842
int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
843
{
844
    MOVContext *mov = s->priv_data;
845
    INT64 offset = 0x0FFFFFFFFFFFFFFF;
846
    int i;
847
    int st_id = 0, size;
848
    size = 0x0FFFFFFF;
849
    
850
again:
851
    for(i=0; i<mov->total_streams; i++) {
852
/*        printf("%8ld ", mov->streams[i]->chunk_offsets[mov->streams[i]->next_chunk]); */
853
        if((mov->streams[i]->next_chunk < mov->streams[i]->chunk_count)
854
        && (mov->streams[i]->chunk_offsets[mov->streams[i]->next_chunk] < offset)) {
855
/*            printf("y"); */
856
            st_id = i;
857
            offset = mov->streams[i]->chunk_offsets[mov->streams[i]->next_chunk];
858
        }
859
/*         else printf("n"); */
860
    }
861
    mov->streams[st_id]->next_chunk++;
862
    if(offset==0x0FFFFFFFFFFFFFFF)
863
        return -1;
864
    
865
    if(mov->next_chunk_offset < offset) /* some meta data */
866
        url_fskip(&s->pb, (offset - mov->next_chunk_offset));
867
    if(!mov->streams[st_id]->is_ff_stream) {
868
        url_fskip(&s->pb, (offset - mov->next_chunk_offset));
869
        offset = 0x0FFFFFFFFFFFFFFF;
870
/*        puts("*"); */
871
        goto again;
872
    }
873
/* printf("\nchunk offset = %ld\n", offset); */
874

    
875
    /* now get the chunk size... */
876

    
877
    for(i=0; i<mov->total_streams; i++) {
878
/*        printf("%ld ", mov->streams[i]->chunk_offsets[mov->streams[i]->next_chunk] - offset); */
879
        if((mov->streams[i]->next_chunk < mov->streams[i]->chunk_count)
880
        && ((mov->streams[i]->chunk_offsets[mov->streams[i]->next_chunk] - offset) < size)) {
881
/*            printf("y"); */
882
            size = mov->streams[i]->chunk_offsets[mov->streams[i]->next_chunk] - offset;
883
        }
884
/*         else printf("n"); */
885
    }
886
/* printf("\nchunk size = %ld\n", size); */
887
    if(size == 0x0FFFFFFF)
888
        size = mov->mdat_size + mov->mdat_offset - offset;
889
    if(size < 0)
890
        return -1;
891
    if(size == 0)
892
        return -1;
893
    av_new_packet(pkt, size);
894
    pkt->stream_index = mov->streams[st_id]->ffindex;
895

    
896
    get_buffer(&s->pb, pkt->data, pkt->size);
897

    
898
#ifdef DEBUG
899
/*
900
    printf("Packet (%d, %d, %ld) ", pkt->stream_index, st_id, pkt->size);
901
    for(i=0; i<8; i++)
902
        printf("%02x ", pkt->data[i]);
903
    for(i=0; i<8; i++)
904
        printf("%c ", (pkt->data[i]) & 0x7F);
905
    puts("");
906
*/
907
#endif
908

    
909
    mov->next_chunk_offset = offset + size;
910

    
911
    return 0;
912
}
913

    
914
int mov_read_close(AVFormatContext *s)
915
{
916
    int i;
917
    MOVContext *mov = s->priv_data;
918
    for(i=0; i<mov->total_streams; i++)
919
        mov_free_stream_context(mov->streams[i]);
920
    for(i=0; i<s->nb_streams; i++)
921
        free(s->streams[i]);
922
    free(mov);
923
    return 0;
924
}
925

    
926
AVFormat mov_format = {
927
    "mov",
928
    "QuickTime format",
929
    "video/quicktime",
930
    "mov",
931
    CODEC_ID_MP2,
932
    CODEC_ID_MJPEG,
933
    NULL,
934
    NULL,
935
    NULL,
936

    
937
    mov_read_header,
938
    mov_read_packet,
939
    mov_read_close,
940
};
941

    
942
AVFormat mp4_format = {
943
    "mp4",
944
    "MPEG4 file format",
945
    "video/mpeg4",
946
    "mp4",
947
    CODEC_ID_MP2,
948
    CODEC_ID_MJPEG,
949
    NULL,
950
    NULL,
951
    NULL,
952

    
953
    mov_read_header,
954
    mov_read_packet,
955
    mov_read_close,
956
};