forked from gopro/cineform-sdk
-
Notifications
You must be signed in to change notification settings - Fork 0
/
readavi.cpp
643 lines (538 loc) · 18 KB
/
readavi.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
/*
readavi - Copyright 2004-2013 by Michael Kohn <mike@mikekohn.net>
For more info please visit http://www.mikekohn.net/
This code falls under the BSD license.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include "avi.h"
#include "fileio.h"
#include "mp4reader.h"
#ifdef _WIN32
#define STRINGCASECOMPARE _stricmp
#else
#define STRINGCASECOMPARE strcasecmp
#endif
#define PRINT_AVI_STRUCTURE 0
uint64_t movi_offset = 0;
/*
static int skip_chunk(FILE *in)
{
char chunk_id[5];
int chunk_size;
int end_of_chunk;
read_chars(in,chunk_id,4);
chunk_size=read_long(in);
printf("Uknown Chunk at %d\n",(int)ftell(in));
printf("-------------------------------\n");
printf(" chunk_id: %s\n",chunk_id);
printf(" chunk_size: %d\n",chunk_size);
printf("\n");
end_of_chunk=ftell(in)+chunk_size;
if ((end_of_chunk%4)!=0)
{
end_of_chunk=end_of_chunk+(4-(end_of_chunk%4));
}
fseek(in,end_of_chunk,SEEK_SET);
return 0;
}
*/
static int hex_dump_chunk(FILE *in, int chunk_len)
{
char chars[17];
int ch,n;
chars[16]=0;
for (n=0; n<chunk_len; n++)
{
if ((n%16)==0)
{
if (n!=0) printf("%s\n", chars);
printf(" ");
memset(chars, ' ', 16);
}
ch=getc(in);
if (ch==EOF) break;
printf("%02x ", ch);
if (ch>=' ' && ch<=126)
{ chars[n%16]=ch; }
else
{ chars[n%16]='.'; }
}
if ((n%16)!=0)
{
for (ch=n%16; ch<16; ch++) { printf(" "); }
}
printf("%s\n", chars);
return 0;
}
static int parse_idx1(void *hdl, FILE *in, int chunk_len)
{
videoobject *mp4 = (videoobject *)hdl;
if (mp4 == NULL) return 0;
struct index_entry_t index_entry;
int t,framenum = 0;
#if PRINT_AVI_STRUCTURE
printf(" IDX1\n");
printf(" -------------------------------\n");
printf(" ckid dwFlags dwChunkOffset dwChunkLength\n");
#endif
for (t=0; t<chunk_len/16; t++)
{
read_chars(in,index_entry.ckid,4);
index_entry.dwFlags=read_long(in);
index_entry.dwChunkOffset=read_long(in);
index_entry.dwChunkLength=read_long(in);
if (0 == strcmp(index_entry.ckid, "00dc") || 0 == strcmp(index_entry.ckid, "00db")) //video frame compressed or baseband
{
if (mp4->metaoffsets)
{
mp4->metaoffsets[framenum] = movi_offset + 4 + (uint64_t)index_entry.dwChunkOffset;
mp4->metasizes[framenum] = (uint64_t)index_entry.dwChunkLength;
framenum++;
}
}
mp4->indexcount = framenum;
mp4->trak_clockcount = mp4->meta_clockcount = mp4->clockcount = mp4->indexcount * mp4->basemetadataduration;
mp4->videolength = mp4->metadatalength = (float)mp4->clockcount / (float)mp4->clockdemon;
#if PRINT_AVI_STRUCTURE
printf(" %s 0x%08x 0x%08x 0x%08x\n",
index_entry.ckid,
index_entry.dwFlags,
index_entry.dwChunkOffset,
index_entry.dwChunkLength);
#endif
}
printf("\n");
return 0;
}
static int read_avi_header(void *hdl, FILE *in,struct avi_header_t *avi_header)
{
videoobject *mp4 = (videoobject *)hdl;
if (mp4 == NULL) return 0;
avi_header->TimeBetweenFrames=read_long(in);
avi_header->MaximumDataRate=read_long(in);
avi_header->PaddingGranularity=read_long(in);
avi_header->Flags=read_long(in);
avi_header->TotalNumberOfFrames=read_long(in);
avi_header->NumberOfInitialFrames=read_long(in);
avi_header->NumberOfStreams=read_long(in);
avi_header->SuggestedBufferSize=read_long(in);
avi_header->Width=read_long(in);
avi_header->Height=read_long(in);
avi_header->TimeScale=read_long(in);
avi_header->DataRate=read_long(in);
avi_header->StartTime=read_long(in);
avi_header->DataLength=read_long(in);
#if PRINT_AVI_STRUCTURE
printf(" offset=0x%lx\n",offset);
printf(" TimeBetweenFrames: %d\n",avi_header->TimeBetweenFrames);
printf(" MaximumDataRate: %d\n",avi_header->MaximumDataRate);
printf(" PaddingGranularity: %d\n",avi_header->PaddingGranularity);
printf(" Flags: %d\n",avi_header->Flags);
printf(" TotalNumberOfFrames: %d\n",avi_header->TotalNumberOfFrames);
printf(" NumberOfInitialFrames: %d\n",avi_header->NumberOfInitialFrames);
printf(" NumberOfStreams: %d\n",avi_header->NumberOfStreams);
printf(" SuggestedBufferSize: %d\n",avi_header->SuggestedBufferSize);
printf(" Width: %d\n",avi_header->Width);
printf(" Height: %d\n",avi_header->Height);
printf(" TimeScale: %d\n",avi_header->TimeScale);
printf(" DataRate: %d\n",avi_header->DataRate);
printf(" StartTime: %d\n",avi_header->StartTime);
printf(" DataLength: %d\n",avi_header->DataLength);
#endif
mp4->indexcount = avi_header->TotalNumberOfFrames;
mp4->basemetadataduration = avi_header->TimeBetweenFrames;
mp4->trak_clockdemon = mp4->meta_clockdemon = mp4->clockdemon = 1000000;
mp4->trak_clockcount = mp4->meta_clockcount = mp4->clockcount = mp4->indexcount * mp4->basemetadataduration;
mp4->videolength = mp4->metadatalength = (float)mp4->clockcount / (float)mp4->clockdemon;
mp4->metasizes = (uint32_t *)malloc(mp4->indexcount * 4);
mp4->metasize_count = mp4->indexcount;
mp4->metaoffsets = (uint64_t *)malloc(mp4->indexcount * 8);
return 0;
}
static void print_data_handler(unsigned char *handler)
{
int t;
for (t=0; t<4; t++)
{
if ((handler[t]>='a' && handler[t]<='z') ||
(handler[t]>='A' && handler[t]<='Z') ||
(handler[t]>='0' && handler[t]<='9'))
{
printf("%c",handler[t]);
}
else
{
printf("[0x%02x]",handler[t]);
}
}
}
static int read_stream_header(FILE *in,struct stream_header_t *stream_header)
{
long offset=ftell(in);
read_chars(in,stream_header->DataType,4);
read_chars(in,stream_header->DataHandler,4);
stream_header->Flags=read_long(in);
stream_header->Priority=read_long(in);
stream_header->InitialFrames=read_long(in);
stream_header->TimeScale=read_long(in);
stream_header->DataRate=read_long(in);
stream_header->StartTime=read_long(in);
stream_header->DataLength=read_long(in);
stream_header->SuggestedBufferSize=read_long(in);
stream_header->Quality=read_long(in);
stream_header->SampleSize=read_long(in);
#if PRINT_AVI_STRUCTURE
printf(" offset=0x%lx\n",offset);
printf(" DataType: %s\n",stream_header->DataType);
printf(" DataHandler: ");
print_data_handler((unsigned char *)stream_header->DataHandler);
printf("\n");
printf(" Flags: %d\n",stream_header->Flags);
printf(" Priority: %d\n",stream_header->Priority);
printf(" InitialFrames: %d\n",stream_header->InitialFrames);
printf(" TimeScale: %d\n",stream_header->TimeScale);
printf(" DataRate: %d\n",stream_header->DataRate);
printf(" StartTime: %d\n",stream_header->StartTime);
printf(" DataLength: %d\n",stream_header->DataLength);
printf(" SuggestedBufferSize: %d\n",stream_header->SuggestedBufferSize);
printf(" Quality: %d\n",stream_header->Quality);
printf(" SampleSize: %d\n",stream_header->SampleSize);
#endif
return 0;
}
static int read_stream_format(FILE *in,struct stream_format_t *stream_format)
{
int t,r,g,b;
long offset=ftell(in);
stream_format->header_size=read_long(in);
stream_format->image_width=read_long(in);
stream_format->image_height=read_long(in);
stream_format->number_of_planes=read_word(in);
stream_format->bits_per_pixel=read_word(in);
stream_format->compression_type=read_long(in);
stream_format->image_size_in_bytes=read_long(in);
stream_format->x_pels_per_meter=read_long(in);
stream_format->y_pels_per_meter=read_long(in);
stream_format->colors_used=read_long(in);
stream_format->colors_important=read_long(in);
stream_format->palette=0;
if (stream_format->colors_important!=0)
{
stream_format->palette=(int *)malloc(stream_format->colors_important*sizeof(int));
for (t=0; t<stream_format->colors_important; t++)
{
b=getc(in);
g=getc(in);
r=getc(in);
stream_format->palette[t]=(r<<16)+(g<<8)+b;
}
}
#if PRINT_AVI_STRUCTURE
printf(" offset=0x%lx\n",offset);
printf(" header_size: %d\n",stream_format->header_size);
printf(" image_width: %d\n",stream_format->image_width);
printf(" image_height: %d\n",stream_format->image_height);
printf(" number_of_planes: %d\n",stream_format->number_of_planes);
printf(" bits_per_pixel: %d\n",stream_format->bits_per_pixel);
printf(" compression_type: %04x (%c%c%c%c)\n",stream_format->compression_type,
((stream_format->compression_type)&255),
((stream_format->compression_type>>8)&255),
((stream_format->compression_type>>16)&255),
((stream_format->compression_type>>24)&255));
printf(" image_size_in_bytes: %d\n",stream_format->image_size_in_bytes);
printf(" x_pels_per_meter: %d\n",stream_format->x_pels_per_meter);
printf(" y_pels_per_meter: %d\n",stream_format->y_pels_per_meter);
printf(" colors_used: %d\n",stream_format->colors_used);
printf(" colors_important: %d\n",stream_format->colors_important);
#endif
return 0;
}
static int read_stream_format_auds(FILE *in, struct stream_format_auds_t *stream_format)
{
long offset=ftell(in);
stream_format->format=read_word(in);
stream_format->channels=read_word(in);
stream_format->samples_per_second=read_long(in);
stream_format->bytes_per_second=read_long(in);
int block_align=read_word(in);
stream_format->block_size_of_data=read_word(in);
stream_format->bits_per_sample=read_word(in);
//stream_format->extended_size=read_word(in);
#if PRINT_AVI_STRUCTURE
printf(" offset=0x%lx\n",offset);
printf(" format: %d\n",stream_format->format);
printf(" channels: %d\n",stream_format->channels);
printf(" samples_per_second: %d\n",stream_format->samples_per_second);
printf(" bytes_per_second: %d\n",stream_format->bytes_per_second);
printf(" block_align: %d\n",block_align);
printf(" block_size_of_data: %d\n",stream_format->block_size_of_data);
printf(" bits_per_sample: %d\n",stream_format->bits_per_sample);
#endif
return 0;
}
static int parse_hdrl_list(FILE *in,struct avi_header_t *avi_header, struct stream_header_t *stream_header, struct stream_format_t *stream_format)
{
struct stream_format_auds_t stream_format_auds;
struct stream_header_t stream_header_auds;
char chunk_id[5];
int chunk_size;
char chunk_type[5];
int end_of_chunk;
int next_chunk;
long offset=ftell(in);
int stream_type=0; // 0=video 1=sound
read_chars(in,chunk_id,4);
chunk_size=read_long(in);
read_chars(in,chunk_type,4);
#if PRINT_AVI_STRUCTURE
printf(" AVI Header LIST (id=%s size=%d type=%s offset=0x%lx)\n",chunk_id,chunk_size,chunk_type,offset);
printf(" {\n");
#endif
end_of_chunk=ftell(in)+chunk_size-4;
if ((end_of_chunk%4)!=0)
{
//printf("Adjusting end of chunk %d\n", end_of_chunk);
//end_of_chunk=end_of_chunk+(4-(end_of_chunk%4));
//printf("Adjusting end of chunk %d\n", end_of_chunk);
}
if (strcmp(chunk_id,"JUNK")==0)
{
fseek(in,end_of_chunk,SEEK_SET);
#if PRINT_AVI_STRUCTURE
printf(" }\n");
#endif
return 0;
}
while (ftell(in)<end_of_chunk)
{
long offset=ftell(in);
read_chars(in,chunk_type,4);
chunk_size=read_long(in);
next_chunk=ftell(in)+chunk_size;
if ((chunk_size%4)!=0)
{
//printf("Chunk size not a multiple of 4?\n");
//chunk_size=chunk_size+(4-(chunk_size%4));
}
#if PRINT_AVI_STRUCTURE
printf(" %.4s (size=%d offset=0x%lx)\n",chunk_type,chunk_size,offset);
printf(" {\n");
#endif
if (STRINGCASECOMPARE("strh",chunk_type)==0)
{
long marker=ftell(in);
char buffer[5];
read_chars(in,buffer,4);
fseek(in,marker,SEEK_SET);
if (strcmp(buffer, "vids")==0)
{
stream_type=0;
read_stream_header(in,stream_header);
}
else
if (strcmp(buffer, "auds")==0)
{
stream_type=1;
read_stream_header(in,&stream_header_auds);
}
else
{
printf("Unknown stream type %s\n", buffer);
return -1;
}
}
else
if (STRINGCASECOMPARE("strf",chunk_type)==0)
{
if (stream_type==0)
{
read_stream_format(in,stream_format);
}
else
{
read_stream_format_auds(in,&stream_format_auds);
}
}
else
if (STRINGCASECOMPARE("strd",chunk_type)==0)
{
}
else
{
#if PRINT_AVI_STRUCTURE
printf(" Unknown chunk type: %s\n",chunk_type);
#endif
// skip_chunk(in);
}
#if PRINT_AVI_STRUCTURE
printf(" }\n");
#endif
fseek(in,next_chunk,SEEK_SET);
}
//printf("@@@@ %ld %d\n", ftell(in), end_of_chunk);
#if PRINT_AVI_STRUCTURE
printf(" }\n");
#endif
fseek(in,end_of_chunk,SEEK_SET);
return 0;
}
static int parse_hdrl(void *hdl, FILE *in,struct avi_header_t *avi_header, struct stream_header_t *stream_header, struct stream_format_t *stream_format, unsigned int size)
{
char chunk_id[5];
int chunk_size;
int end_of_chunk;
long offset=ftell(in);
read_chars(in,chunk_id,4);
chunk_size=read_long(in);
#if PRINT_AVI_STRUCTURE
printf(" AVI Header Chunk (id=%s size=%d offset=0x%lx)\n",chunk_id,chunk_size,offset);
printf(" {\n");
#endif
end_of_chunk=ftell(in)+chunk_size;
if ((end_of_chunk%4)!=0)
{
end_of_chunk=end_of_chunk+(4-(end_of_chunk%4));
}
read_avi_header(hdl, in,avi_header);
#if PRINT_AVI_STRUCTURE
printf(" }\n");
#endif
while(ftell(in)<offset+(long)size-4)
{
//printf("Should end at 0x%lx 0x%lx\n",offset+size,ftell(in));
parse_hdrl_list(in,avi_header,stream_header,stream_format);
}
return 0;
}
static int parse_riff(void *hdl)
{
FILE *in;
char chunk_id[5];
int chunk_size;
char chunk_type[5];
int end_of_chunk,end_of_subchunk;
struct avi_header_t avi_header;
struct stream_header_t stream_header;
struct stream_format_t stream_format={0};
long offset;
videoobject *mp4 = (videoobject *)hdl;
if (mp4 == NULL) return 0;
in = mp4->mediafp;
offset= ftell(in);
read_chars(in,chunk_id,4);
chunk_size=read_long(in);
read_chars(in,chunk_type,4);
#if PRINT_AVI_STRUCTURE
printf("RIFF Chunk (id=%s size=%d type=%s offset=0x%lx)\n",chunk_id,chunk_size,chunk_type, offset);
printf("{\n");
#endif
if (STRINGCASECOMPARE("RIFF",chunk_id)!=0)
{
printf("Not a RIFF file.\n");
return 1;
}
else
if (STRINGCASECOMPARE("AVI ",chunk_type)!=0)
{
printf("Not an AVI file.\n");
return 1;
}
end_of_chunk=ftell(in)+chunk_size-4;
while (ftell(in)<end_of_chunk)
{
long offset=ftell(in);
read_chars(in,chunk_id,4);
chunk_size=read_long(in);
end_of_subchunk=ftell(in)+chunk_size;
if (STRINGCASECOMPARE("JUNK",chunk_id)==0 || STRINGCASECOMPARE("PAD ",chunk_id)==0)
{ chunk_type[0]=0; }
else
{ read_chars(in,chunk_type,4); }
#if PRINT_AVI_STRUCTURE
printf(" New Chunk (id=%s size=%d type=%s offset=0x%lx)\n",chunk_id,chunk_size,chunk_type,offset);
printf(" {\n");
#endif
fflush(stdout);
if (STRINGCASECOMPARE("JUNK",chunk_id)==0 || STRINGCASECOMPARE("PAD ",chunk_id)==0)
{
if ((chunk_size%4)!=0)
{ chunk_size=chunk_size+(4-(chunk_size%4)); }
#if PRINT_AVI_STRUCTURE
hex_dump_chunk(in, chunk_size);
#endif
}
else
if (STRINGCASECOMPARE("INFO",chunk_type)==0)
{
if ((chunk_size%4)!=0)
{ chunk_size=chunk_size+(4-(chunk_size%4)); }
#if PRINT_AVI_STRUCTURE
hex_dump_chunk(in, chunk_size);
#endif
}
else
if (STRINGCASECOMPARE("hdrl",chunk_type)==0)
{
parse_hdrl(hdl, in,&avi_header,&stream_header,&stream_format, chunk_size);
/* skip_chunk(in); */
}
else
if (STRINGCASECOMPARE("movi",chunk_type)==0)
{
char nextid[5];
long pos = ftell(in);
movi_offset = (uint64_t)pos;
read_chars(in, nextid, 4);
fseek(in, pos, SEEK_SET);
if (0 == strcmp("ix00", nextid)) // OpenDML AVI hack
movi_offset = 4;
// parse_movi(in);
}
else
if (STRINGCASECOMPARE("idx1",chunk_id)==0)
{
fseek(in,ftell(in)-4,SEEK_SET);
parse_idx1(hdl, in,chunk_size);
}
else
{
#if PRINT_AVI_STRUCTURE
printf(" Unknown chunk at %d (%4s)\n",(int)ftell(in)-8,chunk_type);
#endif
if (chunk_size==0) break;
}
fseek(in,end_of_subchunk,SEEK_SET);
#if PRINT_AVI_STRUCTURE
printf(" }\n");
#endif
}
if (stream_format.palette!=0)
{
free(stream_format.palette);
}
#if PRINT_AVI_STRUCTURE
printf("}\n");
#endif
return 0;
}
void *OpenAVISource(char *filename, uint32_t traktype, uint32_t subtype)
{
videoobject *mp4 = (videoobject *)malloc(sizeof(videoobject));
if (mp4 == NULL) return NULL;
memset(mp4, 0, sizeof(videoobject));
#ifdef _WIN32
fopen_s(&mp4->mediafp, filename, "rb");
#else
mp4->mediafp = fopen(filename, "rb");
#endif
if (mp4->mediafp == 0)
{
printf("Could not open %s for input\n", filename);
exit(1);
}
parse_riff((void *)mp4);
return (void *)mp4;
}