-
Notifications
You must be signed in to change notification settings - Fork 0
/
video_mix.c
757 lines (633 loc) · 25.4 KB
/
video_mix.c
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
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
/*
* video_mix.c
* 目前支持1分屏，4分屏，6分屏和8分屏
* 每个屏的序号如下：
1分屏： 4分屏：
----------------------------------------- -----------------------------------------
| | | | |
| | | | |
| | | | |
| | | 1 | 2 |
| | | | |
| | | | |
| 1 | -----------------------------------------
| | | | |
| | | | |
| | | | |
| | | 3 | 4 |
| | | | |
----------------------------------------- | | |
-----------------------------------------
6分屏： 8分屏：
----------------------------------------- -----------------------------------------
| | | | | |
| | | | | 2 |
| | 2 | | | |
| | | | |-----------
1 ------------- | | |
| | | | 1 | 3 |
| | 3 | | | |
| | | | |-----------
| | | | | |
----------------------------------------- | | 4 |
| | | | | | |
| 4 | 5 | 6 | -----------------------------------------
| | | | | | | | |
| | | | | 5 | 6 | 7 | 8 |
----------------------------------------- | | | | |
-----------------------------------------
* Created on: 2014-5-15
* Author: changgaowei
*/
#include "libswscale/swscale.h"
#include "libvideo.h"
#include "video_mix.h"
//将一个长度按照分屏个数tok_count分成多个长度，保存在lens中，lens的个数时len_count
//必须保证输出到lens中的值是16的整数倍。这是h264的要求。
//如果不能够整除，则将剩余的值放到其中部分中。
//示例：len = 1280，1280/16=80，80/3=26，余2，则输出：27*16，27*16，26*16
//:注意：可能会存在不是16倍数的情况，比如，1080，现在选择为8的倍数。
//成功返回0，失败返回-1
static int32_t get_len_list(int32_t len, int32_t tok_count, int32_t *lens, int32_t len_count)
{
int32_t per_value = 0; //商
int32_t residual = 0; //余数
int32_t len_per8 = 0; //len除以8所得到的值：可能会存在不是16倍数的情况，比如，1080，现在选择为8的倍数。
int32_t i = 0;
if ((tok_count) > len_count || (tok_count <=0) || (NULL == lens))
{
elog("get_len_list:input is error!");
return -1 ;
}
len_per8 = len / 8;
per_value = len_per8 / tok_count;
if (per_value <= 0)
{
elog("video_mix:The len is too small[%d],can not get sub[%d] screen len.", len, tok_count);
return -1;
}
residual = len_per8 % tok_count;
for(i = 0; i < tok_count; i++)
{
if (i < residual)
{
lens[i] = (per_value + 1) * 8;
}
else
{
lens[i] = per_value * 8;
}
}
return 0;
}
static int32_t init_full_type(int32_t out_width, int32_t out_height, VIDEO_SUB_INFO *sub_screens, int32_t sub_len)
{
if (sub_len < 1)
{
elog("init_full_type:input is error!");
return -1;
}
sub_screens[0].height = out_height;
sub_screens[0].width = out_width;
sub_screens[0].left_width = 0;
sub_screens[0].above_height = 0;
return 0;
}
static int32_t init_two_type(int32_t out_width, int32_t out_height, VIDEO_SUB_INFO *sub_screens, int32_t sub_len)
{
int32_t widths[MAX_MIX_SCREEN_TOKEN_COUNT] = {0};
int32_t heights[MAX_MIX_SCREEN_TOKEN_COUNT] = {0};
int32_t screen_count = 2;
int32_t tok_count = 4; //2分屏的分割为4块。lens中len的个数。分四个，将一个屏变为16个，左边的是中间的四个合并
if (sub_len < screen_count)
{
elog("init_full_type:input is error!");
return -1;
}
memset(widths, 0, sizeof(widths));
if (0 != get_len_list(out_width, tok_count, widths, sizeof(widths) / sizeof(widths[0])))
{
return -1;
}
memset(heights, 0, sizeof(heights));
if (0 != get_len_list(out_height, tok_count, heights, sizeof(heights) / sizeof(heights[0])))
{
return -1;
}
sub_screens[0].width = widths[0] + widths[1];
sub_screens[0].height = heights[1] + heights[2];
sub_screens[0].left_width = 0;
sub_screens[0].above_height = heights[0];
sub_screens[1].width = widths[2] + widths[3];
sub_screens[1].height = heights[1] + heights[2];
sub_screens[1].left_width = widths[0] + widths[1];
sub_screens[1].above_height = heights[0];
return 0;
}
static int32_t init_three_type(int32_t out_width, int32_t out_height, VIDEO_SUB_INFO *sub_screens, int32_t sub_len)
{
int32_t widths[MAX_MIX_SCREEN_TOKEN_COUNT] = {0};
int32_t heights[MAX_MIX_SCREEN_TOKEN_COUNT] = {0};
int32_t screen_count = 3;
int32_t tok_count = 4; //2分屏的分割为4块。lens中len的个数。分四个，将一个屏变为16个，左边的是中间的四个合并
if (sub_len < screen_count)
{
elog("init_full_type:input is error!");
return -1;
}
memset(widths, 0, sizeof(widths));
if (0 != get_len_list(out_width, tok_count, widths, sizeof(widths) / sizeof(widths[0])))
{
return -1;
}
memset(heights, 0, sizeof(heights));
if (0 != get_len_list(out_height, tok_count, heights, sizeof(heights) / sizeof(heights[0])))
{
return -1;
}
sub_screens[0].width = widths[1] + widths[2];
sub_screens[0].height = heights[0] + heights[1];
sub_screens[0].left_width = widths[0];
sub_screens[0].above_height = 0;
sub_screens[1].width = widths[0] + widths[1];
sub_screens[1].height = heights[2] + heights[3];
sub_screens[1].left_width = 0;
sub_screens[1].above_height = heights[0] + heights[1];
sub_screens[2].width = widths[2] + widths[3];
sub_screens[2].height = heights[2] + heights[3];
sub_screens[2].left_width = widths[0] + widths[1];
sub_screens[2].above_height = heights[0] + heights[1];
return 0;
}
static int32_t init_six_type(int32_t out_width, int32_t out_height, VIDEO_SUB_INFO *sub_screens, int32_t sub_len)
{
int32_t widths[MAX_MIX_SCREEN_TOKEN_COUNT] = {0};
int32_t heights[MAX_MIX_SCREEN_TOKEN_COUNT] = {0};
int32_t screen_count = 6;
int32_t tok_count = 3; //六分屏的分割为三块。
if (sub_len < screen_count)
{
elog("init_full_type:input is error!");
return -1;
}
memset(widths, 0, sizeof(widths));
if (0 != get_len_list(out_width, tok_count, widths, sizeof(widths) / sizeof(widths[0])))
{
return -1;
}
memset(heights, 0, sizeof(heights));
if (0 != get_len_list(out_height, tok_count, heights, sizeof(heights) / sizeof(heights[0])))
{
return -1;
}
//这里选用了新的算法，灵活性比上面更高。解耦了各个屏之间的耦合。
sub_screens[0].width = widths[0] + widths[1];
sub_screens[0].height = heights[0] + heights[1];
sub_screens[0].left_width = 0;
sub_screens[0].above_height = 0;
sub_screens[1].width = widths[2];
sub_screens[1].height = heights[0];
sub_screens[1].left_width = widths[0] + widths[1];
sub_screens[1].above_height = 0;
sub_screens[2].width = widths[2];
sub_screens[2].height = heights[1];
sub_screens[2].left_width = widths[0] + widths[1];
sub_screens[2].above_height = heights[0];
sub_screens[3].width = widths[0];
sub_screens[3].height = heights[2];
sub_screens[3].left_width = 0;
sub_screens[3].above_height = heights[0] + heights[1];
sub_screens[4].width = widths[1];
sub_screens[4].height = heights[2];
sub_screens[4].left_width = widths[0];
sub_screens[4].above_height = heights[0] + heights[1];
sub_screens[5].width = widths[2];
sub_screens[5].height = heights[2];
sub_screens[5].left_width = widths[0] + widths[1];
sub_screens[5].above_height = heights[0] + heights[1];
return 0;
}
static int32_t init_eight_type(int32_t out_width, int32_t out_height, VIDEO_SUB_INFO *sub_screens, int32_t sub_len)
{
int32_t widths[MAX_MIX_SCREEN_TOKEN_COUNT] = {0};
int32_t heights[MAX_MIX_SCREEN_TOKEN_COUNT] = {0};
int32_t screen_count = 8;
int32_t tok_count = 4; ////16分屏的分割为四块，再组合。
if (sub_len < screen_count)
{
elog("init_full_type:input is error!");
return -1;
}
memset(widths, 0, sizeof(widths));
if (0 != get_len_list(out_width, tok_count, widths, sizeof(widths) / sizeof(widths[0])))
{
return -1;
}
memset(heights, 0, sizeof(heights));
if (0 != get_len_list(out_height, tok_count, heights, sizeof(heights) / sizeof(heights[0])))
{
return -1;
}
//这里选用了新的算法，灵活性比上面更高。解耦了各个屏之间的耦合，上面几个有时间在改。
sub_screens[0].width = widths[0] + widths[1] + widths[2];
sub_screens[0].height = heights[0] + heights[1] + heights[2];
sub_screens[0].left_width = 0;
sub_screens[0].above_height = 0;
sub_screens[1].width = widths[3];
sub_screens[1].height = heights[0];
sub_screens[1].left_width = widths[0] + widths[1] + widths[2];
sub_screens[1].above_height = 0;
sub_screens[2].width = widths[3];
sub_screens[2].height = heights[1];
sub_screens[2].left_width = widths[0] + widths[1] + widths[2];
sub_screens[2].above_height = heights[0];;
sub_screens[3].width = widths[3];
sub_screens[3].height = heights[2];
sub_screens[3].left_width = widths[0] + widths[1] + widths[2];
sub_screens[3].above_height = heights[0] + heights[1];
sub_screens[4].width = widths[0];
sub_screens[4].height = heights[3];
sub_screens[4].left_width = 0;
sub_screens[4].above_height = heights[0] + heights[1] + heights[2];
sub_screens[5].width = widths[1];
sub_screens[5].height = heights[3];
sub_screens[5].left_width = widths[0];
sub_screens[5].above_height = heights[0] + heights[1] + heights[2];
sub_screens[6].width = widths[2];
sub_screens[6].height = heights[3];
sub_screens[6].left_width = widths[0] + widths[1];
sub_screens[6].above_height = heights[0] + heights[1] + heights[2];
sub_screens[7].width = widths[3];
sub_screens[7].height = heights[3];
sub_screens[7].left_width = widths[0] + widths[1] + widths[2];
sub_screens[7].above_height = heights[0] + heights[1] + heights[2];
return 0;
}
static int32_t init_thirteen_type(int32_t out_width, int32_t out_height, VIDEO_SUB_INFO *sub_screens, int32_t sub_len)
{
int32_t widths[MAX_MIX_SCREEN_TOKEN_COUNT] = {0};
int32_t heights[MAX_MIX_SCREEN_TOKEN_COUNT] = {0};
int32_t screen_count = 13;
int32_t tok_count = 4; ////16分屏的分割为四块，再组合。
if (sub_len < screen_count)
{
elog("init_full_type:input is error!");
return -1;
}
memset(widths, 0, sizeof(widths));
if (0 != get_len_list(out_width, tok_count, widths, sizeof(widths) / sizeof(widths[0])))
{
return -1;
}
memset(heights, 0, sizeof(heights));
if (0 != get_len_list(out_height, tok_count, heights, sizeof(heights) / sizeof(heights[0])))
{
return -1;
}
//这里选用了新的算法，灵活性比上面更高。解耦了各个屏之间的耦合，上面几个有时间在改。
sub_screens[0].width = widths[0];
sub_screens[0].height = heights[0];
sub_screens[0].left_width = 0;
sub_screens[0].above_height = 0;
sub_screens[1].width = widths[1];
sub_screens[1].height = heights[0];
sub_screens[1].left_width = widths[0];
sub_screens[1].above_height = 0;
sub_screens[2].width = widths[2];
sub_screens[2].height = heights[0];
sub_screens[2].left_width = widths[0] + widths[1];
sub_screens[2].above_height = 0;
sub_screens[3].width = widths[3];
sub_screens[3].height = heights[0];
sub_screens[3].left_width = widths[0] + widths[1] + widths[2];
sub_screens[3].above_height = 0;
sub_screens[4].width = widths[0];
sub_screens[4].height = heights[1];
sub_screens[4].left_width = 0;
sub_screens[4].above_height = heights[0];
sub_screens[5].width = widths[1] + widths[2];
sub_screens[5].height = heights[1] + heights[2];
sub_screens[5].left_width = widths[0];
sub_screens[5].above_height = heights[0];
sub_screens[6].width = widths[3];
sub_screens[6].height = heights[1];
sub_screens[6].left_width = widths[0] + widths[1] + widths[2];
sub_screens[6].above_height = heights[0];
sub_screens[7].width = widths[0];
sub_screens[7].height = heights[2];
sub_screens[7].left_width = 0;
sub_screens[7].above_height = heights[0] + heights[1];
sub_screens[8].width = widths[3];
sub_screens[8].height = heights[2];
sub_screens[8].left_width = widths[0] + widths[1] + widths[2];
sub_screens[8].above_height = heights[0] + heights[1];
sub_screens[9].width = widths[0];
sub_screens[9].height = heights[3];
sub_screens[9].left_width = 0;
sub_screens[9].above_height = heights[0] + heights[1] + heights[2];
sub_screens[10].width = widths[1];
sub_screens[10].height = heights[3];
sub_screens[10].left_width = widths[0];
sub_screens[10].above_height = heights[0] + heights[1] + heights[2];
sub_screens[11].width = widths[2];
sub_screens[11].height = heights[3];
sub_screens[11].left_width = widths[0] + widths[1] ;
sub_screens[11].above_height = heights[0] + heights[1] + heights[2];
sub_screens[12].width = widths[3];
sub_screens[12].height = heights[3];
sub_screens[12].left_width = widths[0] + widths[1] + widths[2];
sub_screens[12].above_height = heights[0] + heights[1] + heights[2];
return 0;
}
//初始化规则的分屏：包括：4，9，16。screen_count是分屏个数；tok_count：纵横分割个数，4分屏填2，9分屏填3，16分屏为4。
static int32_t init_regular_type(int32_t out_width, int32_t out_height, VIDEO_SUB_INFO *sub_screens, int32_t sub_len,
int32_t screen_count, int32_t tok_count)
{
int32_t widths[MAX_MIX_SCREEN_TOKEN_COUNT] = {0};
int32_t heights[MAX_MIX_SCREEN_TOKEN_COUNT] = {0};
int32_t iw = 0;
int32_t ih = 0;
int32_t ileft_width_total = 0;
int32_t iabove_heigh_total = 0;
if ((sub_len < screen_count) || (tok_count > MAX_MIX_SCREEN_TOKEN_COUNT))
{
elog("init_full_type:input is error!");
return -1;
}
memset(widths, 0, sizeof(widths));
if (0 != get_len_list(out_width, tok_count, widths, sizeof(widths) / sizeof(widths[0])))
{
return -1;
}
memset(heights, 0, sizeof(heights));
if (0 != get_len_list(out_height, tok_count, heights, sizeof(heights) / sizeof(heights[0])))
{
return -1;
}
for (ih = 0; ih < tok_count; ih++)
{
ileft_width_total = 0; //每次都置为0
for (iw = 0; iw < tok_count; iw++)
{
sub_screens[ih * tok_count + iw].width = widths[iw];
sub_screens[ih * tok_count + iw].height = heights[ih];
sub_screens[ih * tok_count + iw].left_width = ileft_width_total;
sub_screens[ih * tok_count + iw].above_height = iabove_heigh_total;
ileft_width_total += widths[iw];
}
iabove_heigh_total += heights[ih];
}
return 0;
}
int Reset_video_mix(VIDEO_MIX_TH *pvmth,int num){
if(pvmth==NULL){
return -1;
}
int out_width = pvmth->out_width;
int out_height = pvmth->out_height;
int iret = 0;
switch(num)
{
case VIDEO_MIX_FULL:
iret = init_full_type(out_width, out_height, pvmth->sub_screens, MAX_MIX_SCREEN_COUNT);
break;
case VIDEO_MIX_TWO:
iret = init_two_type(out_width, out_height, pvmth->sub_screens, MAX_MIX_SCREEN_COUNT);
break;
case VIDEO_MIX_THREE:
iret = init_three_type(out_width, out_height, pvmth->sub_screens, MAX_MIX_SCREEN_COUNT);
break;
case VIDEO_MIX_FOUR:
iret = init_regular_type(out_width, out_height, pvmth->sub_screens, MAX_MIX_SCREEN_COUNT, 4, 2);
break;
case VIDEO_MIX_SIX:
iret = init_six_type(out_width, out_height, pvmth->sub_screens, MAX_MIX_SCREEN_COUNT);
break;
case VIDEO_MIX_EIGHT:
iret = init_eight_type(out_width, out_height, pvmth->sub_screens, MAX_MIX_SCREEN_COUNT);
break;
case VIDEO_MIX_NINE:
iret = init_regular_type(out_width, out_height, pvmth->sub_screens, MAX_MIX_SCREEN_COUNT, 9, 3);
break;
case VIDEO_MIX_THIRTEEN:
iret = init_thirteen_type(out_width, out_height, pvmth->sub_screens, MAX_MIX_SCREEN_COUNT);
break;
case VIDEO_MIX_SIXTEEN:
iret = init_regular_type(out_width, out_height, pvmth->sub_screens, MAX_MIX_SCREEN_COUNT, 16, 4);
break;
case VIDEO_MIX_TWENTY_FIVE:
iret = init_regular_type(out_width, out_height, pvmth->sub_screens, MAX_MIX_SCREEN_COUNT, 25, 5);
break;
default:
iret = -1;
elog("Unkonwn mix type:[%d]", num);
break;
}
if (iret == -1){
}else{
pvmth->mix_type = num;
}
return iret;
}
VIDEO_MIX_TH *alloc_video_mix_th(VIDEO_MIX_TYPE mix_type, int32_t out_width, int32_t out_height, PICTURE_FORMAT pic_fmt)
{
int32_t iret = 0;
if (pic_fmt != PIC_FMT_YUV_I420)
{
elog("alloc_video_mix_th:PICTURE_FORMAT pic_fmt is not PIC_FMT_YUV_I420!");
return NULL;
}
VIDEO_MIX_TH* pvmth = (VIDEO_MIX_TH *)malloc(sizeof(VIDEO_MIX_TH));
if (NULL == pvmth)
{
elog("alloc_video_mix_th:malloc is fail!");
return NULL;
}
memset(pvmth, 0, sizeof(VIDEO_MIX_TH));
pvmth->mix_type = mix_type;
pvmth->out_height = out_height;
pvmth->out_width = out_width;
pvmth->out_pic_fmt = pic_fmt;
int i = 0;
for (i = 0; i < MAX_MIX_SCREEN_COUNT; i++)
{
pvmth->sub_screens[i].sws_ctx_ffm = NULL;
}
switch(mix_type)
{
case VIDEO_MIX_FULL:
iret = init_full_type(out_width, out_height, pvmth->sub_screens, MAX_MIX_SCREEN_COUNT);
break;
case VIDEO_MIX_TWO:
iret = init_two_type(out_width, out_height, pvmth->sub_screens, MAX_MIX_SCREEN_COUNT);
break;
case VIDEO_MIX_THREE:
iret = init_three_type(out_width, out_height, pvmth->sub_screens, MAX_MIX_SCREEN_COUNT);
break;
case VIDEO_MIX_FOUR:
iret = init_regular_type(out_width, out_height, pvmth->sub_screens, MAX_MIX_SCREEN_COUNT, 4, 2);
break;
case VIDEO_MIX_SIX:
iret = init_six_type(out_width, out_height, pvmth->sub_screens, MAX_MIX_SCREEN_COUNT);
break;
case VIDEO_MIX_EIGHT:
iret = init_eight_type(out_width, out_height, pvmth->sub_screens, MAX_MIX_SCREEN_COUNT);
break;
case VIDEO_MIX_NINE:
iret = init_regular_type(out_width, out_height, pvmth->sub_screens, MAX_MIX_SCREEN_COUNT, 9, 3);
break;
case VIDEO_MIX_THIRTEEN:
iret = init_thirteen_type(out_width, out_height, pvmth->sub_screens, MAX_MIX_SCREEN_COUNT);
break;
case VIDEO_MIX_SIXTEEN:
iret = init_regular_type(out_width, out_height, pvmth->sub_screens, MAX_MIX_SCREEN_COUNT, 16, 4);
break;
case VIDEO_MIX_TWENTY_FIVE:
iret = init_regular_type(out_width, out_height, pvmth->sub_screens, MAX_MIX_SCREEN_COUNT, 25, 5);
break;
default:
iret = -1;
elog("Unkonwn mix type:[%d]", mix_type);
break;
}
if (iret != 0)
{
free_video_mix_th(pvmth);
return NULL;
}
return pvmth;
}
void free_video_mix_th(VIDEO_MIX_TH *pvmth)
{
if (pvmth)
{
int i = 0;
for (i = 0; i < MAX_MIX_SCREEN_COUNT; i++)
{
if (NULL != pvmth->sub_screens[i].sws_ctx_ffm)
{
sws_freeContext(pvmth->sub_screens[i].sws_ctx_ffm);
}
}
free(pvmth);
}
}
static int32_t get_screen_count_by_mix_type(VIDEO_MIX_TYPE mix_type)
{
switch(mix_type)
{
case VIDEO_MIX_FULL:
return 1;
break;
case VIDEO_MIX_TWO:
return 2;
break;
case VIDEO_MIX_THREE:
return 3;
break;
case VIDEO_MIX_FOUR:
return 4;
break;
case VIDEO_MIX_SIX:
return 6;
break;
case VIDEO_MIX_EIGHT:
return 8;
break;
case VIDEO_MIX_NINE:
return 9;
break;
case VIDEO_MIX_THIRTEEN:
return 13;
break;
case VIDEO_MIX_SIXTEEN:
return 16;
break;
case VIDEO_MIX_TWENTY_FIVE:
return 25;
break;
default:
return -1;
elog("Unkonwn mix type:[%d]", mix_type);
break;
}
}
static int32_t video_process_sub_screen(VIDEO_SUB_INFO *psub_screen, FRAME_PIC_DATA *in_pic, FRAME_PIC_DATA *out_pic)
{
if ((NULL == psub_screen) || (out_pic == NULL) || (in_pic == NULL))
{
elog("video_process_sub_screen:input is error!");
return -1;
}
if ((psub_screen->sws_ctx_ffm != NULL) //输入的长度和高度发生改变。重新申请。
&& ((psub_screen->in_width != in_pic->width) || (psub_screen->in_height != in_pic->height)))
{
sws_freeContext(psub_screen->sws_ctx_ffm);
psub_screen->sws_ctx_ffm = NULL;
psub_screen->in_width = 0;
psub_screen->in_height = 0;
}
if (psub_screen->sws_ctx_ffm == NULL) //为NULL，则重新申请。
{
psub_screen->sws_ctx_ffm = sws_getContext(in_pic->width, in_pic->height, AV_PIX_FMT_YUV420P,
psub_screen->width, psub_screen->height, AV_PIX_FMT_YUV420P,
SWS_FAST_BILINEAR, NULL, NULL, NULL);
if (psub_screen->sws_ctx_ffm == NULL)
{
elog("Alloc sws_getContext is error!");
return -1;
}
psub_screen->in_width = in_pic->width;
psub_screen->in_height = in_pic->height;
}
uint8_t *dst_data[LIBV_NUM_DATA_POINTERS];
int32_t dst_linesize[LIBV_NUM_DATA_POINTERS];
//获取y的其实位置。
dst_data[0] = out_pic->data[0] + psub_screen->above_height * out_pic->linesize[0] + psub_screen->left_width;
dst_linesize[0] = out_pic->linesize[0];
//获取u和v的位置
dst_data[1] = out_pic->data[1] + psub_screen->above_height / 2 * out_pic->linesize[1] + psub_screen->left_width / 2;
dst_linesize[1] = out_pic->linesize[1];
dst_data[2] = out_pic->data[2] + psub_screen->above_height / 2 * out_pic->linesize[2] + psub_screen->left_width / 2;
dst_linesize[2] = out_pic->linesize[2];
dst_data[3] = NULL;
dst_linesize[3] = 0;
sws_scale(psub_screen->sws_ctx_ffm, (const uint8_t * const*)in_pic->data,
in_pic->linesize, 0, in_pic->height, dst_data, dst_linesize);
return 0;
}
int32_t video_mix_pic(VIDEO_MIX_TH *pvmth, FRAME_PIC_DATA **in_pics, int32_t in_count, FRAME_PIC_DATA *out_pic)
{
if ((NULL == pvmth) || (in_pics == NULL) || (out_pic == NULL))
{
elog("video_mix_pic:input is error!");
return -1;
}
int32_t screen_count = get_screen_count_by_mix_type(pvmth->mix_type);
if (screen_count <= 0)
{
elog("get screen count by mix type[%d] error.", pvmth->mix_type);
return -1;
}
if (in_count < screen_count)
{
elog("video mix: request in picture count[%d], but input count[%d].", screen_count, in_count);
return -1;
}
if ((out_pic->width != pvmth->out_width) || (out_pic->height != pvmth->out_height)
|| (out_pic->pic_format != pvmth->out_pic_fmt))
{
elog("out picter is not init VIDEO_MIX_TH value.");
return -1;
}
int32_t i = 0;
VIDEO_SUB_INFO *psub_screen = pvmth->sub_screens;
for (i = 0; i < screen_count; i ++)
{
if (NULL != in_pics[i])
{
video_process_sub_screen(&psub_screen[i], in_pics[i], out_pic);
}
}
return 0;
}