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
|
/*
% Copyright (C) 2003-2020 GraphicsMagick Group
% Copyright (C) 2002 ImageMagick Studio
%
% This program is covered by multiple licenses, which are described in
% Copyright.txt. You should have received a copy of Copyright.txt with this
% package; otherwise see http://www.graphicsmagick.org/www/Copyright.html.
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% M M PPPP EEEEE GGGG %
% MM MM P P E G %
% M M M PPPP EEE G GG %
% M M P E G G %
% M M P EEEEE GGGG %
% %
% %
% Write MPEG Image Format. %
% %
% %
% Software Design %
% John Cristy %
% July 1999 %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%
*/
/*
Include declarations.
*/
#include "magick/studio.h"
#include "magick/blob.h"
#include "magick/constitute.h"
#include "magick/delegate.h"
#include "magick/log.h"
#include "magick/magick.h"
#include "magick/tempfile.h"
#include "magick/transform.h"
#include "magick/utility.h"
/*
Forward declarations.
*/
static unsigned int
WriteMPEGImage(const ImageInfo *image_info,Image *image);
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% I s M P E G %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Method IsMPEG returns True if the image format type, identified by the
% magick string, is MPEG.
%
% The format of the IsMPEG method is:
%
% unsigned int IsMPEG(const unsigned char *magick,const size_t length)
%
% A description of each parameter follows:
%
% o status: Method IsMPEG returns True if the image format type is MPEG.
%
% o magick: This string is generally the first few bytes of an image file
% or blob.
%
% o length: Specifies the length of the magick string.
%
%
*/
static unsigned int IsMPEG(const unsigned char *magick,const size_t length)
{
if (length < 4)
return(False);
if (memcmp(magick,"\000\000\001\263",4) == 0)
return(True);
return(False);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e g i s t e r M P E G I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Method RegisterMPEGImage adds attributes for the MPEG image format to
% the list of supported formats. The attributes include the image format
% tag, a method to read and/or write the format, whether the format
% supports the saving of more than one frame to the same file or blob,
% whether the format supports native in-memory I/O, and a brief
% description of the format.
%
% The format of the RegisterMPEGImage method is:
%
% RegisterMPEGImage(void)
%
*/
ModuleExport void RegisterMPEGImage(void)
{
MagickInfo
*entry;
entry=SetMagickInfo("MPEG");
entry->encoder=(EncoderHandler) WriteMPEGImage;
entry->magick=(MagickHandler) IsMPEG;
entry->blob_support=False;
entry->description="MPEG Video Stream";
entry->module="MPEG";
(void) RegisterMagickInfo(entry);
entry=SetMagickInfo("MPG");
entry->encoder=(EncoderHandler) WriteMPEGImage;
entry->magick=(MagickHandler) IsMPEG;
entry->blob_support=False;
entry->description="MPEG Video Stream";
entry->module="MPEG";
(void) RegisterMagickInfo(entry);
entry=SetMagickInfo("M2V");
entry->encoder=(EncoderHandler) WriteMPEGImage;
entry->magick=(MagickHandler) IsMPEG;
entry->blob_support=False;
entry->description="MPEG Video Stream";
entry->module="MPEG";
(void) RegisterMagickInfo(entry);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% U n r e g i s t e r M P E G I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Method UnregisterMPEGImage removes format registrations made by the
% BIM module from the list of supported formats.
%
% The format of the UnregisterBIMImage method is:
%
% UnregisterMPEGImage(void)
%
*/
ModuleExport void UnregisterMPEGImage(void)
{
(void) UnregisterMagickInfo("MPEG");
(void) UnregisterMagickInfo("MPG");
(void) UnregisterMagickInfo("M2V");
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% W r i t e M P E G I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Method WriteMPEGImage writes an image to a file in MPEG video stream format.
% Lawrence Livermore National Laboratory (LLNL) contributed code to adjust
% the MPEG parameters to correspond to the compression quality setting.
%
% The format of the WriteMPEGImage method is:
%
% unsigned int WriteMPEGImage(const ImageInfo *image_info,Image *image)
%
% A description of each parameter follows.
%
% o status: Method WriteMPEGImage return True if the image is written.
% False is returned is there is a memory shortage or if the image file
% fails to write.
%
% o image_info: Specifies a pointer to a ImageInfo structure.
%
% o image: A pointer to an Image structure.
%
%
*/
#define ThrowMPEGWriterException(code_,reason_,image_) \
{ \
if (clone_info) \
DestroyImageInfo(clone_info); \
ThrowWriterException(code_,reason_,image_); \
}
static unsigned int WriteMPEGParameterFiles(const ImageInfo *image_info,
Image *image)
{
char
filename[MaxTextExtent];
double
q;
FILE
*file,
*parameter_file;
long
quant,
vertical_factor;
register Image
*p;
register long
i;
static const int
q_matrix[]=
{
8, 16, 19, 22, 26, 27, 29, 34,
16, 16, 22, 24, 27, 29, 34, 37,
19, 22, 26, 27, 29, 34, 34, 38,
22, 22, 26, 27, 29, 34, 37, 40,
22, 26, 27, 29, 32, 35, 40, 48,
26, 27, 29, 32, 35, 40, 48, 58,
26, 27, 29, 34, 38, 46, 56, 69,
27, 29, 35, 38, 46, 56, 69, 83
};
unsigned int
mpeg;
unsigned long
count;
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickSignature);
assert(image != (Image *) NULL);
assert(image->signature == MagickSignature);
/*
Write parameter file (see mpeg2encode documentation for details).
*/
file=fopen(image_info->unique,"w");
if (file == (FILE *) NULL)
return(False);
(void) fprintf(file,"MPEG\n"); /* comment */
(void) fprintf(file,"%.1024s.%%d\n",image->filename); /* source frame file */
(void) fprintf(file,"-\n"); /* reconstructed frame file */
if (image_info->quality == DefaultCompressionQuality)
(void) fprintf(file,"-\n"); /* default intra quant matrix */
else
{
/*
Write intra quant matrix file.
*/
FormatString(filename,"%.1024s.iqm",image_info->unique);
(void) fprintf(file,"%s\n",filename);
parameter_file=fopen(filename,"w");
if (parameter_file == (FILE *) NULL)
{
(void) fclose(file);
file=(FILE *) NULL;
return(False);
}
if (image_info->quality < DefaultCompressionQuality)
{
q=Max((DefaultCompressionQuality-image_info->quality)/8.0,1.0);
for (i=0; i < 64; i++)
{
quant=(long) Min(Max(q*q_matrix[i]+0.5,1.0),255.0);
(void) fprintf(parameter_file," %ld",quant);
if ((i % 8) == 7)
(void) fprintf(parameter_file,"\n");
}
}
else
{
q=Max((image_info->quality-DefaultCompressionQuality)*2.0,1.0);
for (i=0; i < 64; i++)
{
quant=(long) Min(Max(q_matrix[i]/q,1.0),255.0);
(void) fprintf(parameter_file," %ld",quant);
if ((i % 8) == 7)
(void) fprintf(parameter_file,"\n");
}
}
(void) fclose(parameter_file);
#if !defined(__COVERITY__) /* 384796 Unused value */
parameter_file=(FILE *) NULL;
#endif /* if !defined(__COVERITY__) */
}
if (image_info->quality == DefaultCompressionQuality)
(void) fprintf(file,"-\n"); /* default non intra quant matrix */
else
{
/*
Write non intra quant matrix file.
*/
FormatString(filename,"%.1024s.niq",image_info->unique);
(void) fprintf(file,"%s\n",filename);
parameter_file=fopen(filename,"w");
if (parameter_file == (FILE *) NULL)
{
(void) fclose(file);
file=(FILE *) NULL;
return(False);
}
q=Min(Max(66.0-(2.0*image_info->quality)/3.0,1.0),255.0);
for (i=0; i < 64; i++)
{
(void) fprintf(parameter_file," %d",(int) q);
if ((i % 8) == 7)
(void) fprintf(parameter_file,"\n");
}
(void) fclose(parameter_file);
parameter_file=(FILE *) NULL;
}
(void) fprintf(file,"%.1024s.log\n",image_info->unique); /* statistics log */
(void) fprintf(file,"1\n"); /* input picture file format */
count=0;
for (p=image; p != (Image *) NULL; p=p->next)
count+=Max((p->delay+1)/3,1);
(void) fprintf(file,"%lu\n",count); /* number of frames */
(void) fprintf(file,"0\n"); /* number of first frame */
(void) fprintf(file,"00:00:00:00\n"); /* timecode of first frame */
mpeg=LocaleCompare(image_info->magick,"M2V") != 0;
if (image_info->quality > 98)
(void) fprintf(file,"1\n");
else
(void) fprintf(file,"%d\n",mpeg ? 12 : 15);
if (image_info->quality > 98)
(void) fprintf(file,"1\n");
else
(void) fprintf(file,"3\n");
(void) fprintf(file,"%d\n",mpeg ? 1 : 0); /* ISO/IEC 11172-2 stream */
(void) fprintf(file,"0\n"); /* select frame picture coding */
(void) fprintf(file,"%lu\n",image->columns+(image->columns & 0x01 ? 1 : 0));
(void) fprintf(file,"%lu\n",image->rows+(image->rows & 0x01 ? 1 : 0));
(void) fprintf(file,"%d\n",mpeg ? 8 : 2); /* aspect ratio */
(void) fprintf(file,"%d\n",mpeg ? 3 : 5); /* frame rate code */
(void) fprintf(file,"%.1f\n",mpeg ? 1152000.0 : 5000000.0); /* bit rate */
(void) fprintf(file,"%d\n",mpeg ? 20 : 112); /* vbv buffer size */
(void) fprintf(file,"0\n"); /* low delay */
(void) fprintf(file,"%d\n",mpeg ? 1 : 0); /* constrained parameter */
(void) fprintf(file,"%d\n",mpeg ? 4 : 1); /* profile ID */
(void) fprintf(file,"%d\n",mpeg ? 8 : 4); /* level ID */
(void) fprintf(file,"%d\n",mpeg ? 1 : 0); /* progressive sequence */
vertical_factor=2;
if (image_info->sampling_factor != (char *) NULL)
{
long
count,
horizontal_factor;
horizontal_factor=2;
count=sscanf(image_info->sampling_factor,"%ldx%ld",&horizontal_factor,
&vertical_factor);
if (count != 2)
vertical_factor=horizontal_factor;
if (mpeg)
{
if ((horizontal_factor != 2) || (vertical_factor != 2))
{
(void) fclose(file);
file=(FILE *) NULL;
return(False);
}
}
else
if ((horizontal_factor != 2) ||
((vertical_factor != 1) && (vertical_factor != 2)))
{
(void) fclose(file);
file=(FILE *) NULL;
return(False);
}
}
(void) fprintf(file,"%d\n",vertical_factor==2 ? 1 : 2); /* chroma format */
(void) fprintf(file,"%d\n",mpeg ? 1 : 2); /* video format */
(void) fprintf(file,"5\n"); /* color primaries */
(void) fprintf(file,"5\n"); /* transfer characteristics */
(void) fprintf(file,"%d\n",mpeg ? 5 : 4); /* matrix coefficients */
(void) fprintf(file,"%lu\n",image->columns+(image->columns & 0x01 ? 1 : 0));
(void) fprintf(file,"%lu\n",image->rows+(image->rows & 0x01 ? 1 : 0));
(void) fprintf(file,"0\n"); /* intra dc precision */
(void) fprintf(file,"%d\n",mpeg ? 0 : 1); /* top field */
(void) fprintf(file,"%d %d %d\n",mpeg ? 1 : 0,mpeg ? 1 : 0, mpeg ? 1 : 0);
(void) fprintf(file,"0 0 0\n"); /* concealment motion vector */
(void) fprintf(file,"%d %d %d\n",mpeg ? 0 : 1,mpeg ? 0 : 1,mpeg ? 0 : 1);
(void) fprintf(file,"%d 0 0\n",mpeg ? 0 : 1); /* intra vlc format */
(void) fprintf(file,"0 0 0\n"); /* alternate scan */
(void) fprintf(file,"0\n"); /* repeat first field */
(void) fprintf(file,"%d\n",mpeg ? 1 : 0); /* progressive frame */
(void) fprintf(file,"0\n"); /* intra slice refresh period */
(void) fprintf(file,"0\n"); /* reaction parameter */
(void) fprintf(file,"0\n"); /* initial average activity */
(void) fprintf(file,"0\n");
(void) fprintf(file,"0\n");
(void) fprintf(file,"0\n");
(void) fprintf(file,"0\n");
(void) fprintf(file,"0\n");
(void) fprintf(file,"0\n");
(void) fprintf(file,"2 2 11 11\n");
(void) fprintf(file,"1 1 3 3\n");
(void) fprintf(file,"1 1 7 7\n");
(void) fprintf(file,"1 1 7 7\n");
(void) fprintf(file,"1 1 3 3\n");
(void) fclose(file);
file=(FILE *) NULL;
return(True);
}
static unsigned int WriteMPEGImage(const ImageInfo *image_info,Image *image)
{
char
basename[MaxTextExtent],
filename[MaxTextExtent];
Image
*coalesce_image,
*next_image;
ImageInfo
*clone_info = (ImageInfo *) NULL;
register Image
*p;
register long
i;
size_t
length;
unsigned char
*blob;
unsigned int
logging,
status;
unsigned long
count,
scene;
/*
Open output image file.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickSignature);
assert(image != (Image *) NULL);
assert(image->signature == MagickSignature);
logging=LogMagickEvent(CoderEvent,GetMagickModule(),"enter");
status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
if (status == False)
ThrowMPEGWriterException(FileOpenError,UnableToOpenFile,image);
CloseBlob(image);
/*
Determine if the sequence of images have identical page info.
*/
coalesce_image=image;
for (next_image=image; next_image != (Image *) NULL; )
{
if ((image->columns != next_image->columns) ||
(image->rows != next_image->rows))
break;
if ((image->page.x != next_image->page.x) ||
(image->page.y != next_image->page.y))
break;
next_image=next_image->next;
}
if (next_image != (Image *) NULL)
{
coalesce_image=CoalesceImages(image,&image->exception);
if (coalesce_image == (Image *) NULL)
return(False);
}
/*
Write YUV files.
*/
if(!AcquireTemporaryFileName(basename))
{
DestroyImageList(coalesce_image);
ThrowWriterTemporaryFileException(basename);
}
FormatString(coalesce_image->filename,"%.1024s",basename);
clone_info=CloneImageInfo(image_info);
(void) strlcpy(clone_info->unique,basename,MaxTextExtent);
status=WriteMPEGParameterFiles(clone_info,coalesce_image);
if (status == False)
{
if (coalesce_image != image)
DestroyImageList(coalesce_image);
(void) LiberateTemporaryFile(basename);
if (image_info->quality != DefaultCompressionQuality)
{
FormatString(filename,"%.1024s.iqm",basename);
(void) remove(filename);
FormatString(filename,"%.1024s.niq",basename);
(void) remove(filename);
}
ThrowMPEGWriterException(CoderError,UnableToWriteMPEGParameters,image);
}
count=0;
clone_info->interlace=PlaneInterlace;
for (p=coalesce_image; p != (Image *) NULL; p=p->next)
{
char
previous_image[MaxTextExtent];
blob=(unsigned char *) NULL;
length=0;
scene=p->scene;
for (i=0; i < (long) Max((p->delay+1)/3,1); i++)
{
p->scene=count;
count++;
status=False;
switch (i)
{
case 0:
{
Image
*frame;
FormatString(p->filename,"%.1024s.%lu.yuv",basename,p->scene);
FormatString(filename,"%.1024s.%lu.yuv",basename,p->scene);
FormatString(previous_image,"%.1024s.%lu.yuv",basename,p->scene);
frame=CloneImage(p,0,0,True,&p->exception);
if (frame == (Image *) NULL)
break;
status=WriteImage(clone_info,frame);
DestroyImage(frame);
break;
}
case 1:
{
blob=(unsigned char *)
FileToBlob(previous_image,&length,&image->exception);
FormatString(filename,"%.1024s.%lu.yuv",basename,p->scene);
if (length > 0)
status=BlobToFile(filename,blob,length,&image->exception);
break;
}
default:
{
FormatString(filename,"%.1024s.%lu.yuv",basename,p->scene);
if (length > 0)
status=BlobToFile(filename,blob,length,&image->exception);
break;
}
}
if (logging)
{
if (status)
(void) LogMagickEvent(CoderEvent,GetMagickModule(),
"%lu. Wrote YUV file for scene %lu:",i,p->scene);
else
(void) LogMagickEvent(CoderEvent,GetMagickModule(),
"%lu. Failed to write YUV file for scene %lu:",i,p->scene);
(void) LogMagickEvent(CoderEvent,GetMagickModule(),"%.1024s",
filename);
}
}
p->scene=scene;
if (blob != (unsigned char *) NULL)
MagickFreeMemory(blob);
if (status == False)
break;
}
/*
Convert YUV to MPEG.
*/
(void) strlcpy(coalesce_image->filename,clone_info->unique,MaxTextExtent);
status=InvokeDelegate(clone_info,coalesce_image,(char *) NULL,"mpeg-encode",
&image->exception);
DestroyImageInfo(clone_info);
/*
Free resources.
*/
count=0;
for (p=coalesce_image; p != (Image *) NULL; p=p->next)
{
for (i=0; i < (long) Max((p->delay+1)/3,1); i++)
{
FormatString(p->filename,"%.1024s.%lu.yuv",basename,count++);
(void) remove(p->filename);
}
(void) strlcpy(p->filename,image_info->filename,MaxTextExtent);
}
FormatString(filename,"%.1024s.iqm",basename);
(void) remove(filename);
FormatString(filename,"%.1024s.niq",basename);
(void) remove(filename);
FormatString(filename,"%.1024s.log",basename);
(void) remove(filename);
(void) LiberateTemporaryFile(basename);
if (coalesce_image != image)
DestroyImageList(coalesce_image);
if (logging)
(void) LogMagickEvent(CoderEvent,GetMagickModule(),"exit");
return(status);
}
|
