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
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
|
/* SPUdec.c
Skeleton of function spudec_process_controll() is from xine sources.
Further works:
LGB,... (yeah, try to improve it and insert your name here! ;-)
Kim Minh Kaplan
implement fragments reassembly, RLE decoding.
read brightness from the IFO.
For information on SPU format see <URL:http://sam.zoy.org/doc/dvd/subtitles/>
and <URL:http://members.aol.com/mpucoder/DVD/spu.html>
*/
#include "config.h"
#include "mp_msg.h"
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <math.h>
#include "libvo/video_out.h"
#include "spudec.h"
#ifdef USE_LIBAVUTIL_SO
#include <ffmpeg/avutil.h>
#else
#include "avutil.h"
#endif
#include "libswscale/swscale.h"
#ifdef HAVE_TV_TELETEXT
#include "stream/tv.h"
#endif
/* Valid values for spu_aamode:
0: none (fastest, most ugly)
1: approximate
2: full (slowest)
3: bilinear (similiar to vobsub, fast and not too bad)
4: uses swscaler gaussian (this is the only one that looks good)
*/
int spu_aamode = 3;
int spu_alignment = -1;
float spu_gaussvar = 1.0;
extern int sub_pos;
typedef struct packet_t packet_t;
struct packet_t {
unsigned char *packet;
unsigned int palette[4];
unsigned int alpha[4];
unsigned int control_start; /* index of start of control data */
unsigned int current_nibble[2]; /* next data nibble (4 bits) to be
processed (for RLE decoding) for
even and odd lines */
int deinterlace_oddness; /* 0 or 1, index into current_nibble */
unsigned int start_col, end_col;
unsigned int start_row, end_row;
unsigned int width, height, stride;
unsigned int start_pts, end_pts;
packet_t *next;
};
typedef struct {
packet_t *queue_head;
packet_t *queue_tail;
unsigned int global_palette[16];
unsigned int orig_frame_width, orig_frame_height;
unsigned char* packet;
size_t packet_reserve; /* size of the memory pointed to by packet */
unsigned int packet_offset; /* end of the currently assembled fragment */
unsigned int packet_size; /* size of the packet once all fragments are assembled */
unsigned int packet_pts; /* PTS for this packet */
unsigned int palette[4];
unsigned int alpha[4];
unsigned int cuspal[4];
unsigned int custom;
unsigned int now_pts;
unsigned int start_pts, end_pts;
unsigned int start_col, end_col;
unsigned int start_row, end_row;
unsigned int width, height, stride;
size_t image_size; /* Size of the image buffer */
unsigned char *image; /* Grayscale value */
unsigned char *aimage; /* Alpha value */
unsigned int scaled_frame_width, scaled_frame_height;
unsigned int scaled_start_col, scaled_start_row;
unsigned int scaled_width, scaled_height, scaled_stride;
size_t scaled_image_size;
unsigned char *scaled_image;
unsigned char *scaled_aimage;
int auto_palette; /* 1 if we lack a palette and must use an heuristic. */
int font_start_level; /* Darkest value used for the computed font */
vo_functions_t *hw_spu;
int spu_changed;
unsigned int forced_subs_only; /* flag: 0=display all subtitle, !0 display only forced subtitles */
unsigned int is_forced_sub; /* true if current subtitle is a forced subtitle */
} spudec_handle_t;
static void spudec_queue_packet(spudec_handle_t *this, packet_t *packet)
{
if (this->queue_head == NULL)
this->queue_head = packet;
else
this->queue_tail->next = packet;
this->queue_tail = packet;
}
static packet_t *spudec_dequeue_packet(spudec_handle_t *this)
{
packet_t *retval = this->queue_head;
this->queue_head = retval->next;
if (this->queue_head == NULL)
this->queue_tail = NULL;
return retval;
}
static void spudec_free_packet(packet_t *packet)
{
if (packet->packet != NULL)
free(packet->packet);
free(packet);
}
static inline unsigned int get_be16(const unsigned char *p)
{
return (p[0] << 8) + p[1];
}
static inline unsigned int get_be24(const unsigned char *p)
{
return (get_be16(p) << 8) + p[2];
}
static void next_line(packet_t *packet)
{
if (packet->current_nibble[packet->deinterlace_oddness] % 2)
packet->current_nibble[packet->deinterlace_oddness]++;
packet->deinterlace_oddness = (packet->deinterlace_oddness + 1) % 2;
}
static inline unsigned char get_nibble(packet_t *packet)
{
unsigned char nib;
unsigned int *nibblep = packet->current_nibble + packet->deinterlace_oddness;
if (*nibblep / 2 >= packet->control_start) {
mp_msg(MSGT_SPUDEC,MSGL_WARN, "SPUdec: ERROR: get_nibble past end of packet\n");
return 0;
}
nib = packet->packet[*nibblep / 2];
if (*nibblep % 2)
nib &= 0xf;
else
nib >>= 4;
++*nibblep;
return nib;
}
static inline int mkalpha(int i)
{
/* In mplayer's alpha planes, 0 is transparent, then 1 is nearly
opaque upto 255 which is transparent */
switch (i) {
case 0xf:
return 1;
case 0:
return 0;
default:
return (0xf - i) << 4;
}
}
/* Cut the sub to visible part */
static inline void spudec_cut_image(spudec_handle_t *this)
{
unsigned int fy, ly;
unsigned int first_y, last_y;
unsigned char *image;
unsigned char *aimage;
if (this->stride == 0 || this->height == 0) {
return;
}
for (fy = 0; fy < this->image_size && !this->aimage[fy]; fy++);
for (ly = this->stride * this->height-1; ly && !this->aimage[ly]; ly--);
first_y = fy / this->stride;
last_y = ly / this->stride;
//printf("first_y: %d, last_y: %d\n", first_y, last_y);
this->start_row += first_y;
// Some subtitles trigger this condition
if (last_y + 1 > first_y ) {
this->height = last_y - first_y +1;
} else {
this->height = 0;
this->image_size = 0;
return;
}
// printf("new h %d new start %d (sz %d st %d)---\n\n", this->height, this->start_row, this->image_size, this->stride);
image = malloc(2 * this->stride * this->height);
if(image){
this->image_size = this->stride * this->height;
aimage = image + this->image_size;
memcpy(image, this->image + this->stride * first_y, this->image_size);
memcpy(aimage, this->aimage + this->stride * first_y, this->image_size);
free(this->image);
this->image = image;
this->aimage = aimage;
} else {
mp_msg(MSGT_SPUDEC, MSGL_FATAL, "Fatal: update_spu: malloc requested %d bytes\n", 2 * this->stride * this->height);
}
}
static void spudec_process_data(spudec_handle_t *this, packet_t *packet)
{
unsigned int cmap[4], alpha[4];
unsigned int i, x, y;
this->scaled_frame_width = 0;
this->scaled_frame_height = 0;
this->start_col = packet->start_col;
this->end_col = packet->end_col;
this->start_row = packet->start_row;
this->end_row = packet->end_row;
this->height = packet->height;
this->width = packet->width;
this->stride = packet->stride;
for (i = 0; i < 4; ++i) {
alpha[i] = mkalpha(packet->alpha[i]);
if (alpha[i] == 0)
cmap[i] = 0;
else if (this->custom){
cmap[i] = ((this->cuspal[i] >> 16) & 0xff);
if (cmap[i] + alpha[i] > 255)
cmap[i] = 256 - alpha[i];
}
else {
cmap[i] = ((this->global_palette[packet->palette[i]] >> 16) & 0xff);
if (cmap[i] + alpha[i] > 255)
cmap[i] = 256 - alpha[i];
}
}
if (this->image_size < this->stride * this->height) {
if (this->image != NULL) {
free(this->image);
this->image_size = 0;
}
this->image = malloc(2 * this->stride * this->height);
if (this->image) {
this->image_size = this->stride * this->height;
this->aimage = this->image + this->image_size;
}
}
if (this->image == NULL)
return;
/* Kludge: draw_alpha needs width multiple of 8. */
if (this->width < this->stride)
for (y = 0; y < this->height; ++y) {
memset(this->aimage + y * this->stride + this->width, 0, this->stride - this->width);
/* FIXME: Why is this one needed? */
memset(this->image + y * this->stride + this->width, 0, this->stride - this->width);
}
i = packet->current_nibble[1];
x = 0;
y = 0;
while (packet->current_nibble[0] < i
&& packet->current_nibble[1] / 2 < packet->control_start
&& y < this->height) {
unsigned int len, color;
unsigned int rle = 0;
rle = get_nibble(packet);
if (rle < 0x04) {
rle = (rle << 4) | get_nibble(packet);
if (rle < 0x10) {
rle = (rle << 4) | get_nibble(packet);
if (rle < 0x040) {
rle = (rle << 4) | get_nibble(packet);
if (rle < 0x0004)
rle |= ((this->width - x) << 2);
}
}
}
color = 3 - (rle & 0x3);
len = rle >> 2;
if (len > this->width - x || len == 0)
len = this->width - x;
/* FIXME have to use palette and alpha map*/
memset(this->image + y * this->stride + x, cmap[color], len);
memset(this->aimage + y * this->stride + x, alpha[color], len);
x += len;
if (x >= this->width) {
next_line(packet);
x = 0;
++y;
}
}
spudec_cut_image(this);
}
/*
This function tries to create a usable palette.
It determines how many non-transparent colors are used, and assigns different
gray scale values to each color.
I tested it with four streams and even got something readable. Half of the
times I got black characters with white around and half the reverse.
*/
static void compute_palette(spudec_handle_t *this, packet_t *packet)
{
int used[16],i,cused,start,step,color;
memset(used, 0, sizeof(used));
for (i=0; i<4; i++)
if (packet->alpha[i]) /* !Transparent? */
used[packet->palette[i]] = 1;
for (cused=0, i=0; i<16; i++)
if (used[i]) cused++;
if (!cused) return;
if (cused == 1) {
start = 0x80;
step = 0;
} else {
start = this->font_start_level;
step = (0xF0-this->font_start_level)/(cused-1);
}
memset(used, 0, sizeof(used));
for (i=0; i<4; i++) {
color = packet->palette[i];
if (packet->alpha[i] && !used[color]) { /* not assigned? */
used[color] = 1;
this->global_palette[color] = start<<16;
start += step;
}
}
}
static void spudec_process_control(spudec_handle_t *this, unsigned int pts100)
{
int a,b; /* Temporary vars */
unsigned int date, type;
unsigned int off;
unsigned int start_off = 0;
unsigned int next_off;
unsigned int start_pts;
unsigned int end_pts;
unsigned int current_nibble[2];
unsigned int control_start;
unsigned int display = 0;
unsigned int start_col = 0;
unsigned int end_col = 0;
unsigned int start_row = 0;
unsigned int end_row = 0;
unsigned int width = 0;
unsigned int height = 0;
unsigned int stride = 0;
control_start = get_be16(this->packet + 2);
next_off = control_start;
while (start_off != next_off) {
start_off = next_off;
date = get_be16(this->packet + start_off) * 1024;
next_off = get_be16(this->packet + start_off + 2);
mp_msg(MSGT_SPUDEC,MSGL_DBG2, "date=%d\n", date);
off = start_off + 4;
for (type = this->packet[off++]; type != 0xff; type = this->packet[off++]) {
mp_msg(MSGT_SPUDEC,MSGL_DBG2, "cmd=%d ",type);
switch(type) {
case 0x00:
/* Menu ID, 1 byte */
mp_msg(MSGT_SPUDEC,MSGL_DBG2,"Menu ID\n");
/* shouldn't a Menu ID type force display start? */
start_pts = pts100 + date;
end_pts = UINT_MAX;
display = 1;
this->is_forced_sub=~0; // current subtitle is forced
break;
case 0x01:
/* Start display */
mp_msg(MSGT_SPUDEC,MSGL_DBG2,"Start display!\n");
start_pts = pts100 + date;
end_pts = UINT_MAX;
display = 1;
this->is_forced_sub=0;
break;
case 0x02:
/* Stop display */
mp_msg(MSGT_SPUDEC,MSGL_DBG2,"Stop display!\n");
end_pts = pts100 + date;
break;
case 0x03:
/* Palette */
this->palette[0] = this->packet[off] >> 4;
this->palette[1] = this->packet[off] & 0xf;
this->palette[2] = this->packet[off + 1] >> 4;
this->palette[3] = this->packet[off + 1] & 0xf;
mp_msg(MSGT_SPUDEC,MSGL_DBG2,"Palette %d, %d, %d, %d\n",
this->palette[0], this->palette[1], this->palette[2], this->palette[3]);
off+=2;
break;
case 0x04:
/* Alpha */
this->alpha[0] = this->packet[off] >> 4;
this->alpha[1] = this->packet[off] & 0xf;
this->alpha[2] = this->packet[off + 1] >> 4;
this->alpha[3] = this->packet[off + 1] & 0xf;
mp_msg(MSGT_SPUDEC,MSGL_DBG2,"Alpha %d, %d, %d, %d\n",
this->alpha[0], this->alpha[1], this->alpha[2], this->alpha[3]);
off+=2;
break;
case 0x05:
/* Co-ords */
a = get_be24(this->packet + off);
b = get_be24(this->packet + off + 3);
start_col = a >> 12;
end_col = a & 0xfff;
width = (end_col < start_col) ? 0 : end_col - start_col + 1;
stride = (width + 7) & ~7; /* Kludge: draw_alpha needs width multiple of 8 */
start_row = b >> 12;
end_row = b & 0xfff;
height = (end_row < start_row) ? 0 : end_row - start_row /* + 1 */;
mp_msg(MSGT_SPUDEC,MSGL_DBG2,"Coords col: %d - %d row: %d - %d (%dx%d)\n",
start_col, end_col, start_row, end_row,
width, height);
off+=6;
break;
case 0x06:
/* Graphic lines */
current_nibble[0] = 2 * get_be16(this->packet + off);
current_nibble[1] = 2 * get_be16(this->packet + off + 2);
mp_msg(MSGT_SPUDEC,MSGL_DBG2,"Graphic offset 1: %d offset 2: %d\n",
current_nibble[0] / 2, current_nibble[1] / 2);
off+=4;
break;
case 0xff:
/* All done, bye-bye */
mp_msg(MSGT_SPUDEC,MSGL_DBG2,"Done!\n");
return;
// break;
default:
mp_msg(MSGT_SPUDEC,MSGL_WARN,"spudec: Error determining control type 0x%02x. Skipping %d bytes.\n",
type, next_off - off);
goto next_control;
}
}
next_control:
if (display) {
packet_t *packet = calloc(1, sizeof(packet_t));
int i;
packet->start_pts = start_pts;
if (end_pts == UINT_MAX && start_off != next_off) {
start_pts = pts100 + get_be16(this->packet + next_off) * 1024;
packet->end_pts = start_pts - 1;
} else packet->end_pts = end_pts;
packet->current_nibble[0] = current_nibble[0];
packet->current_nibble[1] = current_nibble[1];
packet->start_row = start_row;
packet->end_row = end_row;
packet->start_col = start_col;
packet->end_col = end_col;
packet->width = width;
packet->height = height;
packet->stride = stride;
packet->control_start = control_start;
for (i=0; i<4; i++) {
packet->alpha[i] = this->alpha[i];
packet->palette[i] = this->palette[i];
}
packet->packet = malloc(this->packet_size);
memcpy(packet->packet, this->packet, this->packet_size);
spudec_queue_packet(this, packet);
}
}
}
static void spudec_decode(spudec_handle_t *this, unsigned int pts100)
{
if(this->hw_spu) {
static vo_mpegpes_t packet = { NULL, 0, 0x20, 0 };
static vo_mpegpes_t *pkg=&packet;
packet.data = this->packet;
packet.size = this->packet_size;
packet.timestamp = pts100;
this->hw_spu->draw_frame((uint8_t**)&pkg);
} else
spudec_process_control(this, pts100);
}
int spudec_changed(void * this)
{
spudec_handle_t * spu = (spudec_handle_t*)this;
return (spu->spu_changed || spu->now_pts > spu->end_pts);
}
void spudec_assemble(void *this, unsigned char *packet, unsigned int len, unsigned int pts100)
{
spudec_handle_t *spu = (spudec_handle_t*)this;
// spudec_heartbeat(this, pts100);
if (len < 2) {
mp_msg(MSGT_SPUDEC,MSGL_WARN,"SPUasm: packet too short\n");
return;
}
#if 0
if ((spu->packet_pts + 10000) < pts100) {
// [cb] too long since last fragment: force new packet
spu->packet_offset = 0;
}
#endif
spu->packet_pts = pts100;
if (spu->packet_offset == 0) {
unsigned int len2 = get_be16(packet);
// Start new fragment
if (spu->packet_reserve < len2) {
if (spu->packet != NULL)
free(spu->packet);
spu->packet = malloc(len2);
spu->packet_reserve = spu->packet != NULL ? len2 : 0;
}
if (spu->packet != NULL) {
spu->packet_size = len2;
if (len > len2) {
mp_msg(MSGT_SPUDEC,MSGL_WARN,"SPUasm: invalid frag len / len2: %d / %d \n", len, len2);
return;
}
memcpy(spu->packet, packet, len);
spu->packet_offset = len;
spu->packet_pts = pts100;
}
} else {
// Continue current fragment
if (spu->packet_size < spu->packet_offset + len){
mp_msg(MSGT_SPUDEC,MSGL_WARN,"SPUasm: invalid fragment\n");
spu->packet_size = spu->packet_offset = 0;
return;
} else {
memcpy(spu->packet + spu->packet_offset, packet, len);
spu->packet_offset += len;
}
}
#if 1
// check if we have a complete packet (unfortunatelly packet_size is bad
// for some disks)
// [cb] packet_size is padded to be even -> may be one byte too long
if ((spu->packet_offset == spu->packet_size) ||
((spu->packet_offset + 1) == spu->packet_size)){
unsigned int x=0,y;
while(x+4<=spu->packet_offset){
y=get_be16(spu->packet+x+2); // next control pointer
mp_msg(MSGT_SPUDEC,MSGL_DBG2,"SPUtest: x=%d y=%d off=%d size=%d\n",x,y,spu->packet_offset,spu->packet_size);
if(x>=4 && x==y){ // if it points to self - we're done!
// we got it!
mp_msg(MSGT_SPUDEC,MSGL_DBG2,"SPUgot: off=%d size=%d \n",spu->packet_offset,spu->packet_size);
spudec_decode(spu, pts100);
spu->packet_offset = 0;
break;
}
if(y<=x || y>=spu->packet_size){ // invalid?
mp_msg(MSGT_SPUDEC,MSGL_WARN,"SPUtest: broken packet!!!!! y=%d < x=%d\n",y,x);
spu->packet_size = spu->packet_offset = 0;
break;
}
x=y;
}
// [cb] packet is done; start new packet
spu->packet_offset = 0;
}
#else
if (spu->packet_offset == spu->packet_size) {
spudec_decode(spu, pts100);
spu->packet_offset = 0;
}
#endif
}
void spudec_reset(void *this) // called after seek
{
spudec_handle_t *spu = (spudec_handle_t*)this;
while (spu->queue_head)
spudec_free_packet(spudec_dequeue_packet(spu));
spu->now_pts = 0;
spu->end_pts = 0;
spu->packet_size = spu->packet_offset = 0;
}
void spudec_heartbeat(void *this, unsigned int pts100)
{
spudec_handle_t *spu = (spudec_handle_t*) this;
spu->now_pts = pts100;
while (spu->queue_head != NULL && pts100 >= spu->queue_head->start_pts) {
packet_t *packet = spudec_dequeue_packet(spu);
spu->start_pts = packet->start_pts;
spu->end_pts = packet->end_pts;
if (spu->auto_palette)
compute_palette(spu, packet);
spudec_process_data(spu, packet);
spudec_free_packet(packet);
spu->spu_changed = 1;
}
}
int spudec_visible(void *this){
spudec_handle_t *spu = (spudec_handle_t *)this;
int ret=(spu->start_pts <= spu->now_pts &&
spu->now_pts < spu->end_pts &&
spu->height > 0);
// printf("spu visible: %d \n",ret);
return ret;
}
void spudec_set_forced_subs_only(void * const this, const unsigned int flag)
{
if(this){
((spudec_handle_t *)this)->forced_subs_only=flag;
mp_msg(MSGT_SPUDEC,MSGL_DBG2,"SPU: Display only forced subs now %s\n", flag ? "enabled": "disabled");
}
}
void spudec_draw(void *this, void (*draw_alpha)(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride))
{
spudec_handle_t *spu = (spudec_handle_t *)this;
if (spu->start_pts <= spu->now_pts && spu->now_pts < spu->end_pts && spu->image)
{
draw_alpha(spu->start_col, spu->start_row, spu->width, spu->height,
spu->image, spu->aimage, spu->stride);
spu->spu_changed = 0;
}
}
/* calc the bbox for spudec subs */
void spudec_calc_bbox(void *me, unsigned int dxs, unsigned int dys, unsigned int* bbox)
{
spudec_handle_t *spu;
spu = (spudec_handle_t *)me;
if (spu->orig_frame_width == 0 || spu->orig_frame_height == 0
|| (spu->orig_frame_width == dxs && spu->orig_frame_height == dys)) {
bbox[0] = spu->start_col;
bbox[1] = spu->start_col + spu->width;
bbox[2] = spu->start_row;
bbox[3] = spu->start_row + spu->height;
}
else if (spu->scaled_frame_width != dxs || spu->scaled_frame_height != dys) {
unsigned int scalex = 0x100 * dxs / spu->orig_frame_width;
unsigned int scaley = 0x100 * dys / spu->orig_frame_height;
bbox[0] = spu->start_col * scalex / 0x100;
bbox[1] = spu->start_col * scalex / 0x100 + spu->width * scalex / 0x100;
switch (spu_alignment) {
case 0:
bbox[3] = dys*sub_pos/100 + spu->height * scaley / 0x100;
if (bbox[3] > dys) bbox[3] = dys;
bbox[2] = bbox[3] - spu->height * scaley / 0x100;
break;
case 1:
if (sub_pos < 50) {
bbox[2] = dys*sub_pos/100 - spu->height * scaley / 0x200;
if (bbox[2] < 0) bbox[2] = 0;
bbox[3] = bbox[2] + spu->height;
} else {
bbox[3] = dys*sub_pos/100 + spu->height * scaley / 0x200;
if (bbox[3] > dys) bbox[3] = dys;
bbox[2] = bbox[3] - spu->height * scaley / 0x100;
}
break;
case 2:
bbox[2] = dys*sub_pos/100 - spu->height * scaley / 0x100;
if (bbox[2] < 0) bbox[2] = 0;
bbox[3] = bbox[2] + spu->height;
break;
default: /* -1 */
bbox[2] = spu->start_row * scaley / 0x100;
bbox[3] = spu->start_row * scaley / 0x100 + spu->height * scaley / 0x100;
break;
}
}
}
/* transform mplayer's alpha value into an opacity value that is linear */
static inline int canon_alpha(int alpha)
{
return alpha ? 256 - alpha : 0;
}
typedef struct {
unsigned position;
unsigned left_up;
unsigned right_down;
}scale_pixel;
static void scale_table(unsigned int start_src, unsigned int start_tar, unsigned int end_src, unsigned int end_tar, scale_pixel * table)
{
unsigned int t;
unsigned int delta_src = end_src - start_src;
unsigned int delta_tar = end_tar - start_tar;
int src = 0;
int src_step;
if (delta_src == 0 || delta_tar == 0) {
return;
}
src_step = (delta_src << 16) / delta_tar >>1;
for (t = 0; t<=delta_tar; src += (src_step << 1), t++){
table[t].position= FFMIN(src >> 16, end_src - 1);
table[t].right_down = src & 0xffff;
table[t].left_up = 0x10000 - table[t].right_down;
}
}
/* bilinear scale, similar to vobsub's code */
static void scale_image(int x, int y, scale_pixel* table_x, scale_pixel* table_y, spudec_handle_t * spu)
{
int alpha[4];
int color[4];
unsigned int scale[4];
int base = table_y[y].position * spu->stride + table_x[x].position;
int scaled = y * spu->scaled_stride + x;
alpha[0] = canon_alpha(spu->aimage[base]);
alpha[1] = canon_alpha(spu->aimage[base + 1]);
alpha[2] = canon_alpha(spu->aimage[base + spu->stride]);
alpha[3] = canon_alpha(spu->aimage[base + spu->stride + 1]);
color[0] = spu->image[base];
color[1] = spu->image[base + 1];
color[2] = spu->image[base + spu->stride];
color[3] = spu->image[base + spu->stride + 1];
scale[0] = (table_x[x].left_up * table_y[y].left_up >> 16) * alpha[0];
scale[1] = (table_x[x].right_down * table_y[y].left_up >>16) * alpha[1];
scale[2] = (table_x[x].left_up * table_y[y].right_down >> 16) * alpha[2];
scale[3] = (table_x[x].right_down * table_y[y].right_down >> 16) * alpha[3];
spu->scaled_image[scaled] = (color[0] * scale[0] + color[1] * scale[1] + color[2] * scale[2] + color[3] * scale[3])>>24;
spu->scaled_aimage[scaled] = (scale[0] + scale[1] + scale[2] + scale[3]) >> 16;
if (spu->scaled_aimage[scaled]){
spu->scaled_aimage[scaled] = 256 - spu->scaled_aimage[scaled];
if(spu->scaled_aimage[scaled] + spu->scaled_image[scaled] > 255)
spu->scaled_image[scaled] = 256 - spu->scaled_aimage[scaled];
}
}
void sws_spu_image(unsigned char *d1, unsigned char *d2, int dw, int dh, int ds,
unsigned char *s1, unsigned char *s2, int sw, int sh, int ss)
{
struct SwsContext *ctx;
static SwsFilter filter;
static int firsttime = 1;
static float oldvar;
int i;
if (!firsttime && oldvar != spu_gaussvar) sws_freeVec(filter.lumH);
if (firsttime) {
filter.lumH = filter.lumV =
filter.chrH = filter.chrV = sws_getGaussianVec(spu_gaussvar, 3.0);
sws_normalizeVec(filter.lumH, 1.0);
firsttime = 0;
oldvar = spu_gaussvar;
}
ctx=sws_getContext(sw, sh, PIX_FMT_GRAY8, dw, dh, PIX_FMT_GRAY8, SWS_GAUSS, &filter, NULL, NULL);
sws_scale(ctx,&s1,&ss,0,sh,&d1,&ds);
for (i=ss*sh-1; i>=0; i--) if (!s2[i]) s2[i] = 255; //else s2[i] = 1;
sws_scale(ctx,&s2,&ss,0,sh,&d2,&ds);
for (i=ds*dh-1; i>=0; i--) if (d2[i]==0) d2[i] = 1; else if (d2[i]==255) d2[i] = 0;
sws_freeContext(ctx);
}
void spudec_draw_scaled(void *me, unsigned int dxs, unsigned int dys, void (*draw_alpha)(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride))
{
spudec_handle_t *spu = (spudec_handle_t *)me;
scale_pixel *table_x;
scale_pixel *table_y;
if (spu->start_pts <= spu->now_pts && spu->now_pts < spu->end_pts) {
// check if only forced subtitles are requested
if( (spu->forced_subs_only) && !(spu->is_forced_sub) ){
return;
}
if (!(spu_aamode&16) && (spu->orig_frame_width == 0 || spu->orig_frame_height == 0
|| (spu->orig_frame_width == dxs && spu->orig_frame_height == dys))) {
if (spu->image)
{
draw_alpha(spu->start_col, spu->start_row, spu->width, spu->height,
spu->image, spu->aimage, spu->stride);
spu->spu_changed = 0;
}
}
else {
if (spu->scaled_frame_width != dxs || spu->scaled_frame_height != dys) { /* Resizing is needed */
/* scaled_x = scalex * x / 0x100
scaled_y = scaley * y / 0x100
order of operations is important because of rounding. */
unsigned int scalex = 0x100 * dxs / spu->orig_frame_width;
unsigned int scaley = 0x100 * dys / spu->orig_frame_height;
spu->scaled_start_col = spu->start_col * scalex / 0x100;
spu->scaled_start_row = spu->start_row * scaley / 0x100;
spu->scaled_width = spu->width * scalex / 0x100;
spu->scaled_height = spu->height * scaley / 0x100;
/* Kludge: draw_alpha needs width multiple of 8 */
spu->scaled_stride = (spu->scaled_width + 7) & ~7;
if (spu->scaled_image_size < spu->scaled_stride * spu->scaled_height) {
if (spu->scaled_image) {
free(spu->scaled_image);
spu->scaled_image_size = 0;
}
spu->scaled_image = malloc(2 * spu->scaled_stride * spu->scaled_height);
if (spu->scaled_image) {
spu->scaled_image_size = spu->scaled_stride * spu->scaled_height;
spu->scaled_aimage = spu->scaled_image + spu->scaled_image_size;
}
}
if (spu->scaled_image) {
unsigned int x, y;
if (spu->scaled_width <= 1 || spu->scaled_height <= 1) {
goto nothing_to_do;
}
switch(spu_aamode&15) {
case 4:
sws_spu_image(spu->scaled_image, spu->scaled_aimage,
spu->scaled_width, spu->scaled_height, spu->scaled_stride,
spu->image, spu->aimage, spu->width, spu->height, spu->stride);
break;
case 3:
table_x = calloc(spu->scaled_width, sizeof(scale_pixel));
table_y = calloc(spu->scaled_height, sizeof(scale_pixel));
if (!table_x || !table_y) {
mp_msg(MSGT_SPUDEC, MSGL_FATAL, "Fatal: spudec_draw_scaled: calloc failed\n");
}
scale_table(0, 0, spu->width - 1, spu->scaled_width - 1, table_x);
scale_table(0, 0, spu->height - 1, spu->scaled_height - 1, table_y);
for (y = 0; y < spu->scaled_height; y++)
for (x = 0; x < spu->scaled_width; x++)
scale_image(x, y, table_x, table_y, spu);
free(table_x);
free(table_y);
break;
case 0:
/* no antialiasing */
for (y = 0; y < spu->scaled_height; ++y) {
int unscaled_y = y * 0x100 / scaley;
int strides = spu->stride * unscaled_y;
int scaled_strides = spu->scaled_stride * y;
for (x = 0; x < spu->scaled_width; ++x) {
int unscaled_x = x * 0x100 / scalex;
spu->scaled_image[scaled_strides + x] = spu->image[strides + unscaled_x];
spu->scaled_aimage[scaled_strides + x] = spu->aimage[strides + unscaled_x];
}
}
break;
case 1:
{
/* Intermediate antialiasing. */
for (y = 0; y < spu->scaled_height; ++y) {
const unsigned int unscaled_top = y * spu->orig_frame_height / dys;
unsigned int unscaled_bottom = (y + 1) * spu->orig_frame_height / dys;
if (unscaled_bottom >= spu->height)
unscaled_bottom = spu->height - 1;
for (x = 0; x < spu->scaled_width; ++x) {
const unsigned int unscaled_left = x * spu->orig_frame_width / dxs;
unsigned int unscaled_right = (x + 1) * spu->orig_frame_width / dxs;
unsigned int color = 0;
unsigned int alpha = 0;
unsigned int walkx, walky;
unsigned int base, tmp;
if (unscaled_right >= spu->width)
unscaled_right = spu->width - 1;
for (walky = unscaled_top; walky <= unscaled_bottom; ++walky)
for (walkx = unscaled_left; walkx <= unscaled_right; ++walkx) {
base = walky * spu->stride + walkx;
tmp = canon_alpha(spu->aimage[base]);
alpha += tmp;
color += tmp * spu->image[base];
}
base = y * spu->scaled_stride + x;
spu->scaled_image[base] = alpha ? color / alpha : 0;
spu->scaled_aimage[base] =
alpha * (1 + unscaled_bottom - unscaled_top) * (1 + unscaled_right - unscaled_left);
/* spu->scaled_aimage[base] =
alpha * dxs * dys / spu->orig_frame_width / spu->orig_frame_height; */
if (spu->scaled_aimage[base]) {
spu->scaled_aimage[base] = 256 - spu->scaled_aimage[base];
if (spu->scaled_aimage[base] + spu->scaled_image[base] > 255)
spu->scaled_image[base] = 256 - spu->scaled_aimage[base];
}
}
}
}
break;
case 2:
{
/* Best antialiasing. Very slow. */
/* Any pixel (x, y) represents pixels from the original
rectangular region comprised between the columns
unscaled_y and unscaled_y + 0x100 / scaley and the rows
unscaled_x and unscaled_x + 0x100 / scalex
The original rectangular region that the scaled pixel
represents is cut in 9 rectangular areas like this:
+---+-----------------+---+
| 1 | 2 | 3 |
+---+-----------------+---+
| | | |
| 4 | 5 | 6 |
| | | |
+---+-----------------+---+
| 7 | 8 | 9 |
+---+-----------------+---+
The width of the left column is at most one pixel and
it is never null and its right column is at a pixel
boundary. The height of the top row is at most one
pixel it is never null and its bottom row is at a
pixel boundary. The width and height of region 5 are
integral values. The width of the right column is
what remains and is less than one pixel. The height
of the bottom row is what remains and is less than
one pixel.
The row above 1, 2, 3 is unscaled_y. The row between
1, 2, 3 and 4, 5, 6 is top_low_row. The row between 4,
5, 6 and 7, 8, 9 is (unsigned int)unscaled_y_bottom.
The row beneath 7, 8, 9 is unscaled_y_bottom.
The column left of 1, 4, 7 is unscaled_x. The column
between 1, 4, 7 and 2, 5, 8 is left_right_column. The
column between 2, 5, 8 and 3, 6, 9 is (unsigned
int)unscaled_x_right. The column right of 3, 6, 9 is
unscaled_x_right. */
const double inv_scalex = (double) 0x100 / scalex;
const double inv_scaley = (double) 0x100 / scaley;
for (y = 0; y < spu->scaled_height; ++y) {
const double unscaled_y = y * inv_scaley;
const double unscaled_y_bottom = unscaled_y + inv_scaley;
const unsigned int top_low_row = FFMIN(unscaled_y_bottom, unscaled_y + 1.0);
const double top = top_low_row - unscaled_y;
const unsigned int height = unscaled_y_bottom > top_low_row
? (unsigned int) unscaled_y_bottom - top_low_row
: 0;
const double bottom = unscaled_y_bottom > top_low_row
? unscaled_y_bottom - floor(unscaled_y_bottom)
: 0.0;
for (x = 0; x < spu->scaled_width; ++x) {
const double unscaled_x = x * inv_scalex;
const double unscaled_x_right = unscaled_x + inv_scalex;
const unsigned int left_right_column = FFMIN(unscaled_x_right, unscaled_x + 1.0);
const double left = left_right_column - unscaled_x;
const unsigned int width = unscaled_x_right > left_right_column
? (unsigned int) unscaled_x_right - left_right_column
: 0;
const double right = unscaled_x_right > left_right_column
? unscaled_x_right - floor(unscaled_x_right)
: 0.0;
double color = 0.0;
double alpha = 0.0;
double tmp;
unsigned int base;
/* Now use these informations to compute a good alpha,
and lightness. The sum is on each of the 9
region's surface and alpha and lightness.
transformed alpha = sum(surface * alpha) / sum(surface)
transformed color = sum(surface * alpha * color) / sum(surface * alpha)
*/
/* 1: top left part */
base = spu->stride * (unsigned int) unscaled_y;
tmp = left * top * canon_alpha(spu->aimage[base + (unsigned int) unscaled_x]);
alpha += tmp;
color += tmp * spu->image[base + (unsigned int) unscaled_x];
/* 2: top center part */
if (width > 0) {
unsigned int walkx;
for (walkx = left_right_column; walkx < (unsigned int) unscaled_x_right; ++walkx) {
base = spu->stride * (unsigned int) unscaled_y + walkx;
tmp = /* 1.0 * */ top * canon_alpha(spu->aimage[base]);
alpha += tmp;
color += tmp * spu->image[base];
}
}
/* 3: top right part */
if (right > 0.0) {
base = spu->stride * (unsigned int) unscaled_y + (unsigned int) unscaled_x_right;
tmp = right * top * canon_alpha(spu->aimage[base]);
alpha += tmp;
color += tmp * spu->image[base];
}
/* 4: center left part */
if (height > 0) {
unsigned int walky;
for (walky = top_low_row; walky < (unsigned int) unscaled_y_bottom; ++walky) {
base = spu->stride * walky + (unsigned int) unscaled_x;
tmp = left /* * 1.0 */ * canon_alpha(spu->aimage[base]);
alpha += tmp;
color += tmp * spu->image[base];
}
}
/* 5: center part */
if (width > 0 && height > 0) {
unsigned int walky;
for (walky = top_low_row; walky < (unsigned int) unscaled_y_bottom; ++walky) {
unsigned int walkx;
base = spu->stride * walky;
for (walkx = left_right_column; walkx < (unsigned int) unscaled_x_right; ++walkx) {
tmp = /* 1.0 * 1.0 * */ canon_alpha(spu->aimage[base + walkx]);
alpha += tmp;
color += tmp * spu->image[base + walkx];
}
}
}
/* 6: center right part */
if (right > 0.0 && height > 0) {
unsigned int walky;
for (walky = top_low_row; walky < (unsigned int) unscaled_y_bottom; ++walky) {
base = spu->stride * walky + (unsigned int) unscaled_x_right;
tmp = right /* * 1.0 */ * canon_alpha(spu->aimage[base]);
alpha += tmp;
color += tmp * spu->image[base];
}
}
/* 7: bottom left part */
if (bottom > 0.0) {
base = spu->stride * (unsigned int) unscaled_y_bottom + (unsigned int) unscaled_x;
tmp = left * bottom * canon_alpha(spu->aimage[base]);
alpha += tmp;
color += tmp * spu->image[base];
}
/* 8: bottom center part */
if (width > 0 && bottom > 0.0) {
unsigned int walkx;
base = spu->stride * (unsigned int) unscaled_y_bottom;
for (walkx = left_right_column; walkx < (unsigned int) unscaled_x_right; ++walkx) {
tmp = /* 1.0 * */ bottom * canon_alpha(spu->aimage[base + walkx]);
alpha += tmp;
color += tmp * spu->image[base + walkx];
}
}
/* 9: bottom right part */
if (right > 0.0 && bottom > 0.0) {
base = spu->stride * (unsigned int) unscaled_y_bottom + (unsigned int) unscaled_x_right;
tmp = right * bottom * canon_alpha(spu->aimage[base]);
alpha += tmp;
color += tmp * spu->image[base];
}
/* Finally mix these transparency and brightness information suitably */
base = spu->scaled_stride * y + x;
spu->scaled_image[base] = alpha > 0 ? color / alpha : 0;
spu->scaled_aimage[base] = alpha * scalex * scaley / 0x10000;
if (spu->scaled_aimage[base]) {
spu->scaled_aimage[base] = 256 - spu->scaled_aimage[base];
if (spu->scaled_aimage[base] + spu->scaled_image[base] > 255)
spu->scaled_image[base] = 256 - spu->scaled_aimage[base];
}
}
}
}
}
nothing_to_do:
/* Kludge: draw_alpha needs width multiple of 8. */
if (spu->scaled_width < spu->scaled_stride)
for (y = 0; y < spu->scaled_height; ++y) {
memset(spu->scaled_aimage + y * spu->scaled_stride + spu->scaled_width, 0,
spu->scaled_stride - spu->scaled_width);
}
spu->scaled_frame_width = dxs;
spu->scaled_frame_height = dys;
}
}
if (spu->scaled_image){
switch (spu_alignment) {
case 0:
spu->scaled_start_row = dys*sub_pos/100;
if (spu->scaled_start_row + spu->scaled_height > dys)
spu->scaled_start_row = dys - spu->scaled_height;
break;
case 1:
spu->scaled_start_row = dys*sub_pos/100 - spu->scaled_height/2;
if (sub_pos < 50) {
if (spu->scaled_start_row < 0) spu->scaled_start_row = 0;
} else {
if (spu->scaled_start_row + spu->scaled_height > dys)
spu->scaled_start_row = dys - spu->scaled_height;
}
break;
case 2:
spu->scaled_start_row = dys*sub_pos/100 - spu->scaled_height;
if (spu->scaled_start_row < 0) spu->scaled_start_row = 0;
break;
}
draw_alpha(spu->scaled_start_col, spu->scaled_start_row, spu->scaled_width, spu->scaled_height,
spu->scaled_image, spu->scaled_aimage, spu->scaled_stride);
spu->spu_changed = 0;
}
}
}
else
{
mp_msg(MSGT_SPUDEC,MSGL_DBG2,"SPU not displayed: start_pts=%d end_pts=%d now_pts=%d\n",
spu->start_pts, spu->end_pts, spu->now_pts);
}
}
void spudec_update_palette(void * this, unsigned int *palette)
{
spudec_handle_t *spu = (spudec_handle_t *) this;
if (spu && palette) {
memcpy(spu->global_palette, palette, sizeof(spu->global_palette));
if(spu->hw_spu)
spu->hw_spu->control(VOCTRL_SET_SPU_PALETTE,spu->global_palette);
}
}
void spudec_set_font_factor(void * this, double factor)
{
spudec_handle_t *spu = (spudec_handle_t *) this;
spu->font_start_level = (int)(0xF0-(0xE0*factor));
}
void *spudec_new_scaled(unsigned int *palette, unsigned int frame_width, unsigned int frame_height)
{
return spudec_new_scaled_vobsub(palette, NULL, 0, frame_width, frame_height);
}
/* get palette custom color, width, height from .idx file */
void *spudec_new_scaled_vobsub(unsigned int *palette, unsigned int *cuspal, unsigned int custom, unsigned int frame_width, unsigned int frame_height)
{
spudec_handle_t *this = calloc(1, sizeof(spudec_handle_t));
if (this){
//(fprintf(stderr,"VobSub Custom Palette: %d,%d,%d,%d", this->cuspal[0], this->cuspal[1], this->cuspal[2],this->cuspal[3]);
this->packet = NULL;
this->image = NULL;
this->scaled_image = NULL;
/* XXX Although the video frame is some size, the SPU frame is
always maximum size i.e. 720 wide and 576 or 480 high */
this->orig_frame_width = 720;
this->orig_frame_height = (frame_height == 480 || frame_height == 240) ? 480 : 576;
this->custom = custom;
// set up palette:
this->auto_palette = 1;
if (palette){
memcpy(this->global_palette, palette, sizeof(this->global_palette));
this->auto_palette = 0;
}
this->custom = custom;
if (custom && cuspal) {
memcpy(this->cuspal, cuspal, sizeof(this->cuspal));
this->auto_palette = 0;
}
// forced subtitles default: show all subtitles
this->forced_subs_only=0;
this->is_forced_sub=0;
}
else
mp_msg(MSGT_SPUDEC,MSGL_FATAL, "FATAL: spudec_init: calloc");
return this;
}
void *spudec_new(unsigned int *palette)
{
return spudec_new_scaled(palette, 0, 0);
}
void spudec_free(void *this)
{
spudec_handle_t *spu = (spudec_handle_t*)this;
if (spu) {
while (spu->queue_head)
spudec_free_packet(spudec_dequeue_packet(spu));
if (spu->packet)
free(spu->packet);
if (spu->scaled_image)
free(spu->scaled_image);
if (spu->image)
free(spu->image);
free(spu);
}
}
void spudec_set_hw_spu(void *this, vo_functions_t *hw_spu)
{
spudec_handle_t *spu = (spudec_handle_t*)this;
if (!spu)
return;
spu->hw_spu = hw_spu;
hw_spu->control(VOCTRL_SET_SPU_PALETTE,spu->global_palette);
}
#ifdef HAVE_TV_TELETEXT
#define VBI_R(rgba) (((rgba) >> 0) & 0xFF)
#define VBI_G(rgba) (((rgba) >> 8) & 0xFF)
#define VBI_B(rgba) (((rgba) >> 16) & 0xFF)
#define VBI_A(rgba) (((rgba) >> 24) & 0xFF)
static unsigned char rgbtoy(int r, int g, int b) {
int ret=(257*r+504*g+98*b+16000)/1000;
return ret & 0xff;
}
/// correction u and v planes half size
#define SPU_DOUBLE_SIZE 1
void alloc_images(spudec_handle_t* spu, int cmode) {
if (spu->image_size < spu->stride * spu->height) {
if (spu->image != NULL) {
free(spu->image);
spu->image_size = 0;
}
spu->image = malloc(2 * spu->stride * spu->height);
if (spu->image) {
spu->image_size = spu->stride * spu->height;
spu->aimage = spu->image + spu->image_size;
}
}
}
/**
Render from VBI_PIXFMT_RGBA32_LE to spu
**/
void spudec_heartbeat_teletext(void *this, void *imgptr)
{
int px,py;
int grey,alpha,cy,cu,cv,alphauv;
uint32_t *canvas;
uint32_t *pin;
spudec_handle_t *spu = (spudec_handle_t*)this;
tv_teletext_img_t *img = (tv_teletext_img_t*)imgptr;
unsigned char *iptr;
unsigned char *aptr;
int h1 = 10;
int hs = 0;
if(!spu || !img)
return;
if(img->canvas==NULL) {
spudec_reset(spu);
if (spu->image)
free(spu->image);
spu->image=NULL;
spu->image_size = 0;
return;
}
if(img->half) h1=5; // top half page
if(img->half==2) hs=5; // bottom half page
spu->start_pts=0;
spu->end_pts=0;
spu->now_pts=1;
spu->orig_frame_width = img->columns*12; // 1 char width 12 pixel
spu->orig_frame_height = img->rows*h1; // 1 char height 10 pixel
spu->scaled_frame_width = 0;
spu->scaled_frame_height = 0;
spu->start_col = 0;
spu->end_col = img->columns*12;
spu->start_row = 0;
spu->end_row = img->rows*h1;
spu->height = img->rows*h1;
spu->width = img->columns*12;
spu->height = (spu->height+3)&(~3); // round to 4
spu->stride = (spu->width+7)&(~7); // round to 8
alloc_images(spu,img->tformat); // alloc images buffer
if (spu->image == NULL) {
spudec_reset(spu);
return;
}
canvas=img->canvas; // RGBA32_LE image
pin=canvas+(hs*img->columns*12*img->rows);
memset(spu->image,0,spu->image_size*2);
for(py=0;py<img->rows*h1;py++) {
iptr=spu->image+(py-hs)*spu->stride; // image ptr
aptr=spu->aimage+(py-hs)*spu->stride; // alpha ptr
for(px=0;px<img->columns*12;px++) {
grey=rgbtoy(VBI_R(*pin),VBI_G(*pin),VBI_B(*pin)); // RGB to Y
if(grey<=0x10) grey=0;
alpha=VBI_A(*pin);
switch (img->tformat) {
case 0x01: // BW
case 0x02: // Gray
case 0x03: // Color (not supported)
alpha=0x100-alpha;
if (grey + alpha > 255) grey = 256 - alpha;
break;
}
*iptr=grey; // store Y plane
*aptr=alpha; // store alpha
iptr++;
aptr++;
pin++;
}
}
spu->start_pts=0;
spu->end_pts=UINT_MAX;
}
#endif
|