Statistics
| Branch: | Revision:

ffmpeg / libavformat / avienc.c @ 764ef400

History | View | Annotate | Download (22.8 KB)

1
/*
2
 * AVI encoder.
3
 * Copyright (c) 2000 Fabrice Bellard.
4
 *
5
 * This library is free software; you can redistribute it and/or
6
 * modify it under the terms of the GNU Lesser General Public
7
 * License as published by the Free Software Foundation; either
8
 * version 2 of the License, or (at your option) any later version.
9
 *
10
 * This library is distributed in the hope that it will be useful,
11
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13
 * Lesser General Public License for more details.
14
 *
15
 * You should have received a copy of the GNU Lesser General Public
16
 * License along with this library; if not, write to the Free Software
17
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
18
 */
19
#include "avformat.h"
20
#include "avi.h"
21

    
22
/*
23
 * TODO: 
24
 *  - fill all fields if non streamed (nb_frames for example)
25
 */
26

    
27
#ifdef CONFIG_ENCODERS
28
typedef struct AVIIentry {
29
    unsigned int flags, pos, len;
30
} AVIIentry;
31

    
32
#define AVI_INDEX_CLUSTER_SIZE 16384
33

    
34
typedef struct AVIIndex {
35
    offset_t    indx_start;
36
    int         entry;
37
    int         ents_allocated;
38
    AVIIentry** cluster;
39
} AVIIndex;
40

    
41
typedef struct {
42
    offset_t riff_start, movi_list, odml_list;
43
    offset_t frames_hdr_all, frames_hdr_strm[MAX_STREAMS];
44
    int audio_strm_length[MAX_STREAMS];
45
    int riff_id;
46

    
47
    AVIIndex indexes[MAX_STREAMS];
48
} AVIContext;
49

    
50
static inline AVIIentry* avi_get_ientry(AVIIndex* idx, int ent_id) 
51
{
52
    int cl = ent_id / AVI_INDEX_CLUSTER_SIZE;
53
    int id = ent_id % AVI_INDEX_CLUSTER_SIZE;
54
    return &idx->cluster[cl][id];
55
}
56

    
57
offset_t start_tag(ByteIOContext *pb, const char *tag)
58
{
59
    put_tag(pb, tag);
60
    put_le32(pb, 0);
61
    return url_ftell(pb);
62
}
63

    
64
void end_tag(ByteIOContext *pb, offset_t start)
65
{
66
    offset_t pos;
67

    
68
    pos = url_ftell(pb);
69
    url_fseek(pb, start - 4, SEEK_SET);
70
    put_le32(pb, (uint32_t)(pos - start));
71
    url_fseek(pb, pos, SEEK_SET);
72
}
73
#endif //CONFIG_ENCODERS
74

    
75
/* Note: when encoding, the first matching tag is used, so order is
76
   important if multiple tags possible for a given codec. */
77
const CodecTag codec_bmp_tags[] = {
78
    { CODEC_ID_H263, MKTAG('H', '2', '6', '3') },
79
    { CODEC_ID_H263P, MKTAG('H', '2', '6', '3') },
80
    { CODEC_ID_H263I, MKTAG('I', '2', '6', '3') }, /* intel h263 */
81

    
82
    /* added based on MPlayer */
83
    { CODEC_ID_H263P, MKTAG('U', '2', '6', '3') },
84
    { CODEC_ID_H263P, MKTAG('v', 'i', 'v', '1') },
85

    
86
    { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X'), .invalid_asf = 1 },
87
    { CODEC_ID_MPEG4, MKTAG('D', 'X', '5', '0'), .invalid_asf = 1 },
88
    { CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D'), .invalid_asf = 1 },
89
    { CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },
90
    { CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },
91
    { CODEC_ID_MPEG4, MKTAG(0x04, 0, 0, 0) }, /* some broken avi use this */
92

    
93
    /* added based on MPlayer */
94
    { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', '1') },
95
    { CODEC_ID_MPEG4, MKTAG('B', 'L', 'Z', '0') },
96
    { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
97
    { CODEC_ID_MPEG4, MKTAG('U', 'M', 'P', '4') },
98

    
99
    { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '3'), .invalid_asf = 1 }, /* default signature when using MSMPEG4 */
100
    { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') }, 
101

    
102
    /* added based on MPlayer */
103
    { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', 'G', '3') }, 
104
    { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '5') }, 
105
    { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '6') }, 
106
    { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '4') }, 
107
    { CODEC_ID_MSMPEG4V3, MKTAG('A', 'P', '4', '1') }, 
108
    { CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '1') }, 
109
    { CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '0') }, 
110

    
111
    { CODEC_ID_MSMPEG4V2, MKTAG('M', 'P', '4', '2') }, 
112

    
113
    /* added based on MPlayer */
114
    { CODEC_ID_MSMPEG4V2, MKTAG('D', 'I', 'V', '2') },
115
 
116
    { CODEC_ID_MSMPEG4V1, MKTAG('M', 'P', 'G', '4') }, 
117

    
118
    { CODEC_ID_WMV1, MKTAG('W', 'M', 'V', '1') }, 
119

    
120
    /* added based on MPlayer */
121
    { CODEC_ID_WMV2, MKTAG('W', 'M', 'V', '2') }, 
122
    { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'd') }, 
123
    { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', 'd') }, 
124
    { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'l') }, 
125
    { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '2', '5') },
126
    { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '1') }, 
127
    { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '2') }, 
128
    { CODEC_ID_MPEG1VIDEO, MKTAG('P', 'I', 'M', '1') }, 
129
    { CODEC_ID_MPEG1VIDEO, MKTAG('V', 'C', 'R', '2') }, 
130
    { CODEC_ID_MJPEG, MKTAG('M', 'J', 'P', 'G') },
131
    { CODEC_ID_MJPEG, MKTAG('L', 'J', 'P', 'G') },
132
    { CODEC_ID_LJPEG, MKTAG('L', 'J', 'P', 'G') },
133
    { CODEC_ID_MJPEG, MKTAG('J', 'P', 'G', 'L') }, /* Pegasus lossless JPEG */
134
    { CODEC_ID_HUFFYUV, MKTAG('H', 'F', 'Y', 'U') },
135
    { CODEC_ID_CYUV, MKTAG('C', 'Y', 'U', 'V') },
136
    { CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '2', '2') },
137
    { CODEC_ID_RAWVIDEO, MKTAG('I', '4', '2', '0') },
138
    { CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '1') },
139
    { CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '2') },
140
    { CODEC_ID_VP3, MKTAG('V', 'P', '3', '1') },
141
    { CODEC_ID_ASV1, MKTAG('A', 'S', 'V', '1') },
142
    { CODEC_ID_ASV2, MKTAG('A', 'S', 'V', '2') },
143
    { CODEC_ID_VCR1, MKTAG('V', 'C', 'R', '1') },
144
    { CODEC_ID_FFV1, MKTAG('F', 'F', 'V', '1') },
145
    { CODEC_ID_XAN_WC4, MKTAG('X', 'x', 'a', 'n') },
146
    { CODEC_ID_MSRLE, MKTAG('m', 'r', 'l', 'e') },
147
    { CODEC_ID_MSRLE, MKTAG(0x1, 0x0, 0x0, 0x0) },
148
    { CODEC_ID_MSVIDEO1, MKTAG('M', 'S', 'V', 'C') },
149
    { CODEC_ID_MSVIDEO1, MKTAG('m', 's', 'v', 'c') },
150
    { CODEC_ID_MSVIDEO1, MKTAG('C', 'R', 'A', 'M') },
151
    { CODEC_ID_MSVIDEO1, MKTAG('c', 'r', 'a', 'm') },
152
    { CODEC_ID_MSVIDEO1, MKTAG('W', 'H', 'A', 'M') },
153
    { CODEC_ID_MSVIDEO1, MKTAG('w', 'h', 'a', 'm') },
154
    { CODEC_ID_CINEPAK, MKTAG('c', 'v', 'i', 'd') },
155
    { 0, 0 },
156
};
157

    
158
unsigned int codec_get_tag(const CodecTag *tags, int id)
159
{
160
    while (tags->id != 0) {
161
        if (tags->id == id)
162
            return tags->tag;
163
        tags++;
164
    }
165
    return 0;
166
}
167

    
168
static unsigned int codec_get_asf_tag(const CodecTag *tags, int id)
169
{
170
    while (tags->id != 0) {
171
        if (!tags->invalid_asf && tags->id == id)
172
            return tags->tag;
173
        tags++;
174
    }
175
    return 0;
176
}
177

    
178
enum CodecID codec_get_id(const CodecTag *tags, unsigned int tag)
179
{
180
    while (tags->id != 0) {
181
        if(   toupper((tag >> 0)&0xFF) == toupper((tags->tag >> 0)&0xFF)
182
           && toupper((tag >> 8)&0xFF) == toupper((tags->tag >> 8)&0xFF)
183
           && toupper((tag >>16)&0xFF) == toupper((tags->tag >>16)&0xFF)
184
           && toupper((tag >>24)&0xFF) == toupper((tags->tag >>24)&0xFF))
185
            return tags->id;
186
        tags++;
187
    }
188
    return CODEC_ID_NONE;
189
}
190

    
191
unsigned int codec_get_bmp_tag(int id)
192
{
193
    return codec_get_tag(codec_bmp_tags, id);
194
}
195

    
196
unsigned int codec_get_wav_tag(int id)
197
{
198
    return codec_get_tag(codec_wav_tags, id);
199
}
200

    
201
enum CodecID codec_get_bmp_id(unsigned int tag)
202
{
203
    return codec_get_id(codec_bmp_tags, tag);
204
}
205

    
206
enum CodecID codec_get_wav_id(unsigned int tag)
207
{
208
    return codec_get_id(codec_wav_tags, tag);
209
}
210

    
211
#ifdef CONFIG_ENCODERS
212
/* BITMAPINFOHEADER header */
213
void put_bmp_header(ByteIOContext *pb, AVCodecContext *enc, const CodecTag *tags, int for_asf)
214
{
215
    put_le32(pb, 40 + enc->extradata_size); /* size */
216
    put_le32(pb, enc->width);
217
    put_le32(pb, enc->height);
218
    put_le16(pb, 1); /* planes */
219
    
220
    put_le16(pb, enc->bits_per_sample ? enc->bits_per_sample : 24); /* depth */
221
    /* compression type */
222
    put_le32(pb, for_asf ? codec_get_asf_tag(tags, enc->codec_id) : enc->codec_tag);
223
    put_le32(pb, enc->width * enc->height * 3);
224
    put_le32(pb, 0);
225
    put_le32(pb, 0);
226
    put_le32(pb, 0);
227
    put_le32(pb, 0);
228
    
229
    put_buffer(pb, enc->extradata, enc->extradata_size);
230

    
231
    if (enc->extradata_size & 1)
232
        put_byte(pb, 0);
233
}
234

    
235
static void parse_specific_params(AVCodecContext *stream, int *au_byterate, int *au_ssize, int *au_scale)
236
{
237
    switch(stream->codec_id) {
238
    case CODEC_ID_PCM_S16LE:
239
       *au_scale = *au_ssize = 2*stream->channels;
240
       *au_byterate = *au_ssize * stream->sample_rate;
241
        break;
242
    case CODEC_ID_PCM_U8:
243
    case CODEC_ID_PCM_ALAW:
244
    case CODEC_ID_PCM_MULAW:
245
        *au_scale = *au_ssize = stream->channels;
246
        *au_byterate = *au_ssize * stream->sample_rate;
247
        break;
248
    case CODEC_ID_MP2:
249
        *au_ssize = 1;
250
        *au_scale = 1;
251
        *au_byterate = stream->bit_rate / 8;
252
    case CODEC_ID_MP3:
253
        *au_ssize = 1;
254
        *au_scale = 1;
255
        *au_byterate = stream->bit_rate / 8;    
256
    default:
257
        *au_ssize = 1;
258
        *au_scale = 1; 
259
        *au_byterate = stream->bit_rate / 8;
260
        break;
261
    }
262
}
263

    
264
static offset_t avi_start_new_riff(AVIContext *avi, ByteIOContext *pb, 
265
                                   const char* riff_tag, const char* list_tag)
266
{
267
    offset_t loff;
268
    int i;
269
    
270
    avi->riff_id++;
271
    for (i=0; i<MAX_STREAMS; i++)
272
         avi->indexes[i].entry = 0;
273
    
274
    avi->riff_start = start_tag(pb, "RIFF");
275
    put_tag(pb, riff_tag);
276
    loff = start_tag(pb, "LIST");
277
    put_tag(pb, list_tag);
278
    return loff;
279
}
280

    
281
static unsigned char* avi_stream2fourcc(unsigned char* tag, int index, 
282
                                        enum CodecType type)
283
{
284
    tag[0] = '0';
285
    tag[1] = '0' + index;
286
    if (type == CODEC_TYPE_VIDEO) {
287
        tag[2] = 'd';
288
        tag[3] = 'c';
289
    } else {
290
        tag[2] = 'w';
291
        tag[3] = 'b';
292
    }
293
    tag[4] = '\0';
294
    return tag;
295
}
296

    
297
static int avi_write_header(AVFormatContext *s)
298
{
299
    AVIContext *avi = s->priv_data;
300
    ByteIOContext *pb = &s->pb;
301
    int bitrate, n, i, nb_frames, au_byterate, au_ssize, au_scale;
302
    AVCodecContext *stream, *video_enc;
303
    offset_t list1, list2, strh, strf;
304

    
305
    /* header list */
306
    avi->riff_id = 0;
307
    list1 = avi_start_new_riff(avi, pb, "AVI ", "hdrl");
308

    
309
    /* avi header */
310
    put_tag(pb, "avih");
311
    put_le32(pb, 14 * 4);
312
    bitrate = 0;
313

    
314
    video_enc = NULL;
315
    for(n=0;n<s->nb_streams;n++) {
316
        stream = &s->streams[n]->codec;
317
        bitrate += stream->bit_rate;
318
        if (stream->codec_type == CODEC_TYPE_VIDEO)
319
            video_enc = stream;
320
    }
321
    
322
    nb_frames = 0;
323

    
324
    if(video_enc){
325
        put_le32(pb, (uint32_t)(int64_t_C(1000000) * video_enc->frame_rate_base / video_enc->frame_rate));
326
    } else {
327
        put_le32(pb, 0);
328
    }
329
    put_le32(pb, bitrate / 8); /* XXX: not quite exact */
330
    put_le32(pb, 0); /* padding */
331
    put_le32(pb, AVIF_TRUSTCKTYPE | AVIF_HASINDEX | AVIF_ISINTERLEAVED); /* flags */
332
    avi->frames_hdr_all = url_ftell(pb); /* remember this offset to fill later */
333
    put_le32(pb, nb_frames); /* nb frames, filled later */
334
    put_le32(pb, 0); /* initial frame */
335
    put_le32(pb, s->nb_streams); /* nb streams */
336
    put_le32(pb, 1024 * 1024); /* suggested buffer size */
337
    if(video_enc){    
338
    put_le32(pb, video_enc->width);
339
    put_le32(pb, video_enc->height);
340
    } else {
341
        put_le32(pb, 0);
342
        put_le32(pb, 0);
343
    }        
344
    put_le32(pb, 0); /* reserved */
345
    put_le32(pb, 0); /* reserved */
346
    put_le32(pb, 0); /* reserved */
347
    put_le32(pb, 0); /* reserved */
348
    
349
    /* stream list */
350
    for(i=0;i<n;i++) {
351
        list2 = start_tag(pb, "LIST");
352
        put_tag(pb, "strl");
353
    
354
        stream = &s->streams[i]->codec;
355

    
356
        /* FourCC should really be set by the codec itself */
357
        if (! stream->codec_tag) {
358
            stream->codec_tag = codec_get_bmp_tag(stream->codec_id);
359
        }
360

    
361
        /* stream generic header */
362
        strh = start_tag(pb, "strh");
363
        switch(stream->codec_type) {
364
        case CODEC_TYPE_VIDEO:
365
            put_tag(pb, "vids");
366
            put_le32(pb, stream->codec_tag);
367
            put_le32(pb, 0); /* flags */
368
            put_le16(pb, 0); /* priority */
369
            put_le16(pb, 0); /* language */
370
            put_le32(pb, 0); /* initial frame */
371
            
372
            put_le32(pb, stream->frame_rate_base); /* scale */
373
            put_le32(pb, stream->frame_rate); /* rate */
374

    
375
            put_le32(pb, 0); /* start */
376
            avi->frames_hdr_strm[i] = url_ftell(pb); /* remember this offset to fill later */
377
            put_le32(pb, nb_frames); /* length, XXX: fill later */
378
            put_le32(pb, 1024 * 1024); /* suggested buffer size */
379
            put_le32(pb, -1); /* quality */
380
            put_le32(pb, stream->width * stream->height * 3); /* sample size */
381
            put_le16(pb, 0);
382
            put_le16(pb, 0);
383
            put_le16(pb, stream->width);
384
            put_le16(pb, stream->height);
385
            break;
386
        case CODEC_TYPE_AUDIO:
387
            put_tag(pb, "auds");
388
            put_le32(pb, 1); /* tag */
389
            put_le32(pb, 0); /* flags */
390
            put_le16(pb, 0); /* priority */
391
            put_le16(pb, 0); /* language */
392
            put_le32(pb, 0); /* initial frame */
393
            parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);
394
            put_le32(pb, au_scale); /* scale */
395
            put_le32(pb, au_byterate); /* rate */
396
            put_le32(pb, 0); /* start */
397
            avi->frames_hdr_strm[i] = url_ftell(pb); /* remember this offset to fill later */
398
            put_le32(pb, 0); /* length, XXX: filled later */
399
            put_le32(pb, 12 * 1024); /* suggested buffer size */
400
            put_le32(pb, -1); /* quality */
401
            put_le32(pb, au_ssize); /* sample size */
402
            put_le32(pb, 0);
403
            put_le32(pb, 0);
404
            break;
405
        default:
406
            av_abort();
407
        }
408
        end_tag(pb, strh);
409

    
410
        strf = start_tag(pb, "strf");
411
        switch(stream->codec_type) {
412
        case CODEC_TYPE_VIDEO:
413
            put_bmp_header(pb, stream, codec_bmp_tags, 0);
414
            break;
415
        case CODEC_TYPE_AUDIO:
416
            if (put_wav_header(pb, stream) < 0) {
417
                av_free(avi);
418
                return -1;
419
            }
420
            break;
421
        default:
422
            av_abort();
423
        }
424
        end_tag(pb, strf);
425
        
426
        if (!url_is_streamed(pb)) {
427
            unsigned char tag[5];
428
            int j;
429
    
430
            /* Starting to lay out AVI OpenDML master index. 
431
             * We want to make it JUNK entry for now, since we'd
432
             * like to get away without making AVI an OpenDML one 
433
             * for compatibility reasons.
434
             */
435
            avi->indexes[i].entry = avi->indexes[i].ents_allocated = 0;
436
            avi->indexes[i].indx_start = start_tag(pb, "JUNK"); 
437
            put_le16(pb, 4);        /* wLongsPerEntry */
438
            put_byte(pb, 0);        /* bIndexSubType (0 == frame index) */
439
            put_byte(pb, 0);        /* bIndexType (0 == AVI_INDEX_OF_INDEXES) */
440
            put_le32(pb, 0);        /* nEntriesInUse (will fill out later on) */
441
            put_tag(pb, avi_stream2fourcc(&tag[0], i, stream->codec_type));
442
                                    /* dwChunkId */
443
            put_le64(pb, 0);        /* dwReserved[3]
444
            put_le32(pb, 0);           Must be 0.    */
445
            for (j=0; j < AVI_MASTER_INDEX_SIZE * 2; j++)
446
                 put_le64(pb, 0);
447
            end_tag(pb, avi->indexes[i].indx_start);
448
        }
449
        
450
        end_tag(pb, list2);
451
    }
452
    
453
    if (!url_is_streamed(pb)) {
454
        /* AVI could become an OpenDML one, if it grows beyond 2Gb range */
455
        avi->odml_list = start_tag(pb, "JUNK");
456
        put_tag(pb, "odml");
457
        put_tag(pb, "dmlh");
458
        put_le32(pb, 248);
459
        for (i = 0; i < 248; i+= 4)
460
             put_le32(pb, 0);
461
        end_tag(pb, avi->odml_list);
462
    }
463

    
464
    end_tag(pb, list1);
465
    
466
    avi->movi_list = start_tag(pb, "LIST");
467
    put_tag(pb, "movi");
468

    
469
    put_flush_packet(pb);
470

    
471
    return 0;
472
}
473

    
474
static int avi_write_ix(AVFormatContext *s)
475
{
476
    ByteIOContext *pb = &s->pb;
477
    AVIContext *avi = s->priv_data;
478
    unsigned char tag[5];
479
    unsigned char ix_tag[] = "ix00";
480
    int i, j;
481
    
482
    if (avi->riff_id > AVI_MASTER_INDEX_SIZE)
483
        return -1;
484
    
485
    for (i=0;i<s->nb_streams;i++) {
486
         offset_t ix, pos;
487
         
488
         avi_stream2fourcc(&tag[0], i, s->streams[i]->codec.codec_type);
489
         ix_tag[3] = '0' + i;
490
         
491
         /* Writing AVI OpenDML leaf index chunk */
492
         ix = url_ftell(pb); 
493
         put_tag(pb, &ix_tag[0]);     /* ix?? */
494
         put_le32(pb, avi->indexes[i].entry * 8 + 24); 
495
                                      /* chunk size */
496
         put_le16(pb, 2);             /* wLongsPerEntry */
497
         put_byte(pb, 0);             /* bIndexSubType (0 == frame index) */ 
498
         put_byte(pb, 1);             /* bIndexType (1 == AVI_INDEX_OF_CHUNKS) */
499
         put_le32(pb, avi->indexes[i].entry);          
500
                                      /* nEntriesInUse */
501
         put_tag(pb, &tag[0]);        /* dwChunkId */
502
         put_le64(pb, avi->movi_list);/* qwBaseOffset */
503
         put_le32(pb, 0);             /* dwReserved_3 (must be 0) */
504

    
505
         for (j=0; j<avi->indexes[i].entry; j++) {
506
             AVIIentry* ie = avi_get_ientry(&avi->indexes[i], j);
507
             put_le32(pb, ie->pos + 8);
508
             put_le32(pb, ((uint32_t)ie->len & ~0x80000000) |
509
                          (ie->flags & 0x10 ? 0 : 0x80000000));
510
         }
511
         put_flush_packet(pb);
512
         pos = url_ftell(pb);
513
        
514
         /* Updating one entry in the AVI OpenDML master index */
515
         url_fseek(pb, avi->indexes[i].indx_start - 8, SEEK_SET);
516
         put_tag(pb, "indx");                 /* enabling this entry */
517
         url_fskip(pb, 8);
518
         put_le32(pb, avi->riff_id);          /* nEntriesInUse */
519
         url_fskip(pb, 16*avi->riff_id);
520
         put_le64(pb, ix);                    /* qwOffset */
521
         put_le32(pb, pos - ix);              /* dwSize */
522
         put_le32(pb, avi->indexes[i].entry); /* dwDuration */
523

    
524
         url_fseek(pb, pos, SEEK_SET);
525
    }
526
    return 0;
527
}
528

    
529
static int avi_write_idx1(AVFormatContext *s)
530
{
531
    ByteIOContext *pb = &s->pb;
532
    AVIContext *avi = s->priv_data;
533
    offset_t file_size, idx_chunk;
534
    int i, n, nb_frames, au_byterate, au_ssize, au_scale;
535
    AVCodecContext *stream;
536
    unsigned char tag[5];
537

    
538
    if (!url_is_streamed(pb)) {
539
        AVIIentry* ie = 0, *tie;
540
        int entry[MAX_STREAMS];
541
        int empty, stream_id = -1;
542

    
543
        idx_chunk = start_tag(pb, "idx1");
544
        memset(&entry[0], 0, sizeof(entry));
545
        do {
546
            empty = 1;
547
            for (i=0; i<s->nb_streams; i++) {
548
                 if (avi->indexes[i].entry <= entry[i])
549
                     continue;
550
                 
551
                 tie = avi_get_ientry(&avi->indexes[i], entry[i]);
552
                 if (empty || tie->pos < ie->pos) {
553
                     ie = tie; 
554
                     stream_id = i;
555
                 }
556
                 empty = 0;
557
            }
558
            if (!empty) {
559
                avi_stream2fourcc(&tag[0], stream_id, 
560
                                  s->streams[stream_id]->codec.codec_type); 
561
                put_tag(pb, &tag[0]);
562
                put_le32(pb, ie->flags);
563
                put_le32(pb, ie->pos);
564
                put_le32(pb, ie->len);
565
                entry[stream_id]++;
566
            }
567
        } while (!empty);
568
        end_tag(pb, idx_chunk);
569

    
570
        /* Fill in frame/sample counters */
571
        file_size = url_ftell(pb);
572
        nb_frames = 0;
573
        for(n=0;n<s->nb_streams;n++) {
574
            if (avi->frames_hdr_strm[n] != 0) {
575
                stream = &s->streams[n]->codec;
576
                url_fseek(pb, avi->frames_hdr_strm[n], SEEK_SET);
577
                if (stream->codec_type == CODEC_TYPE_VIDEO) {
578
                    put_le32(pb, stream->frame_number); 
579
                    if (nb_frames < stream->frame_number)
580
                        nb_frames = stream->frame_number;
581
                } else {
582
                    if (stream->codec_id == CODEC_ID_MP2 || stream->codec_id == CODEC_ID_MP3) {
583
                        put_le32(pb, stream->frame_number);
584
                        nb_frames += stream->frame_number;
585
                    } else {
586
                        parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);
587
                        put_le32(pb, avi->audio_strm_length[n] / au_ssize);
588
                    }
589
                }
590
            }
591
       }
592
       if (avi->frames_hdr_all != 0) {
593
           url_fseek(pb, avi->frames_hdr_all, SEEK_SET);
594
           put_le32(pb, nb_frames); 
595
       }
596
       url_fseek(pb, file_size, SEEK_SET);
597
    }
598
    return 0;
599
}
600

    
601
static int avi_write_packet(AVFormatContext *s, int stream_index,
602
                            const uint8_t *buf, int size, int64_t pts)
603
{
604
    AVIContext *avi = s->priv_data;
605
    ByteIOContext *pb = &s->pb;
606
    unsigned char tag[5];
607
    unsigned int flags;
608
    AVCodecContext *enc;
609

    
610
    if (url_ftell(pb) - avi->riff_start > AVI_MAX_RIFF_SIZE) { 
611
        avi_write_ix(s);
612
        end_tag(pb, avi->movi_list);
613
        
614
        if (avi->riff_id == 1)
615
            avi_write_idx1(s);
616

    
617
        end_tag(pb, avi->riff_start);
618
        avi->movi_list = avi_start_new_riff(avi, pb, "AVIX", "movi");
619
    }
620
    
621
    enc = &s->streams[stream_index]->codec;
622
    avi_stream2fourcc(&tag[0], stream_index, enc->codec_type);
623
    if (enc->codec_type == CODEC_TYPE_AUDIO) {
624
       avi->audio_strm_length[stream_index] += size;
625
       flags = 0x10;
626
    } else
627
       flags = enc->coded_frame->key_frame ? 0x10 : 0x00;
628

    
629
    if (!url_is_streamed(&s->pb)) {
630
        AVIIndex* idx = &avi->indexes[stream_index];
631
        int cl = idx->entry / AVI_INDEX_CLUSTER_SIZE;
632
        int id = idx->entry % AVI_INDEX_CLUSTER_SIZE;
633
        if (idx->ents_allocated <= idx->entry) {
634
            idx->cluster = av_realloc(idx->cluster, (cl+1)*sizeof(void*)); 
635
            if (!idx->cluster)
636
                return -1;
637
            idx->cluster[cl] = av_malloc(AVI_INDEX_CLUSTER_SIZE*sizeof(AVIIentry));
638
            if (!idx->cluster[cl])
639
                return -1;
640
            idx->ents_allocated += AVI_INDEX_CLUSTER_SIZE;
641
        }
642
         
643
        idx->cluster[cl][id].flags = flags; 
644
        idx->cluster[cl][id].pos = url_ftell(pb) - avi->movi_list;
645
        idx->cluster[cl][id].len = size;
646
        idx->entry++;
647
    }
648
    
649
    put_buffer(pb, tag, 4);
650
    put_le32(pb, size);
651
    put_buffer(pb, buf, size);
652
    if (size & 1)
653
        put_byte(pb, 0);
654

    
655
    put_flush_packet(pb);
656
    return 0;
657
}
658

    
659
static int avi_write_trailer(AVFormatContext *s)
660
{
661
    AVIContext *avi = s->priv_data;
662
    ByteIOContext *pb = &s->pb;
663
    int res = 0;
664
    int i, j, n, nb_frames;
665
    offset_t file_size;
666

    
667
    if (avi->riff_id == 1) {
668
        end_tag(pb, avi->movi_list);
669
        res = avi_write_idx1(s);
670
        end_tag(pb, avi->riff_start);
671
    } else {
672
        avi_write_ix(s);
673
        end_tag(pb, avi->movi_list);
674
        end_tag(pb, avi->riff_start);
675

    
676
        file_size = url_ftell(pb);
677
        url_fseek(pb, avi->odml_list - 8, SEEK_SET);
678
        put_tag(pb, "LIST"); /* Making this AVI OpenDML one */
679
        url_fskip(pb, 16);
680

    
681
        for (n=nb_frames=0;n<s->nb_streams;n++) {
682
             AVCodecContext *stream = &s->streams[n]->codec;
683
             if (stream->codec_type == CODEC_TYPE_VIDEO) {
684
                 if (nb_frames < stream->frame_number)
685
                     nb_frames = stream->frame_number;
686
             } else {
687
                 if (stream->codec_id == CODEC_ID_MP2 || stream->codec_id == CODEC_ID_MP3) {
688
                     nb_frames += stream->frame_number;
689
                }
690
            }
691
        }
692
        put_le32(pb, nb_frames);
693
        url_fseek(pb, file_size, SEEK_SET);
694
    }
695
    put_flush_packet(pb);
696

    
697
    for (i=0; i<MAX_STREAMS; i++) {
698
         for (j=0; j<avi->indexes[i].ents_allocated/AVI_INDEX_CLUSTER_SIZE; j++)
699
              av_free(avi->indexes[i].cluster[j]);
700
         av_free(avi->indexes[i].cluster);
701
         avi->indexes[i].cluster = NULL;
702
         avi->indexes[i].ents_allocated = avi->indexes[i].entry = 0;
703
    }
704
    
705
    return res;
706
}
707

    
708
static AVOutputFormat avi_oformat = {
709
    "avi",
710
    "avi format",
711
    "video/x-msvideo",
712
    "avi",
713
    sizeof(AVIContext),
714
    CODEC_ID_MP2,
715
    CODEC_ID_MPEG4,
716
    avi_write_header,
717
    avi_write_packet,
718
    avi_write_trailer,
719
};
720

    
721
int avienc_init(void)
722
{
723
    av_register_output_format(&avi_oformat);
724
    return 0;
725
}
726
#endif //CONFIG_ENCODERS