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
|
/* gap_story_render_lossless.c
*
*
* GAP storyboard pseudo rendering for lossless video cut.
* (includes checks if frames in the referenced video source
* can be provided 1:1 as raw data chunks to the calling encoder
* and performs the raw data chunk fetch where possible
* and requested by the calling encoder)
*
* Copyright (C) 2008 Wolfgang Hofer <hof@gimp.org>
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/*
* 2008.06.11 hof - created (moved stuff from the former gap_gve_story_render_processor to this new module)
*/
#ifdef GAP_ENABLE_VIDEOAPI_SUPPORT
/* ----------------------------------------------------
* p_debug_print_vcodec_missmatch
* ----------------------------------------------------
*/
static void
p_debug_print_vcodec_missmatch(const char *videofile
,GapCodecNameElem *vcodec_list
,const char *vcodec_name_chunk
)
{
printf("chunk_fetch not possible, video codec missmatch. ");
printf("videofile:");
if(videofile)
{
printf("%s", videofile);
}
else
{
printf("NULL");
}
printf(", vcodec_list:");
if(vcodec_list)
{
GapCodecNameElem *codec_elem;
for(codec_elem = vcodec_list; codec_elem != NULL; codec_elem = (GapCodecNameElem *) codec_elem->next)
{
if(codec_elem->codec_name)
{
printf("%s ", codec_elem->codec_name);
}
}
}
else
{
printf("NULL");
}
printf(", vcodec_name_chunk:");
if(vcodec_name_chunk)
{
printf("%s", vcodec_name_chunk);
}
else
{
printf("NULL");
}
printf("\n");
} /* end p_debug_print_vcodec_missmatch */
/* ----------------------------------------------------
* p_check_vcodec_name
* ----------------------------------------------------
* return TRUE if vcodec_name_chunk is found in the
* specified list of compatible codecs names
* (The vcodec_list is provided by the calling encoder
* and includes a list of compatible codec names for lossles video cut purpose)
* FALSE if vcodec check condition failed.
*
* Note: vcodec_name_chunk NULL (unknown) is never compatible,
* an empty list (vcodec_list == NULL) matches to
* all codec names (but not to unknown codec)
*/
static gboolean
p_check_vcodec_name(gint32 check_flags
, GapCodecNameElem *vcodec_list, const char *vcodec_name_chunk)
{
if (check_flags & GAP_VID_CHCHK_FLAG_VCODEC_NAME)
{
if(vcodec_name_chunk == NULL)
{
return (FALSE);
}
if(vcodec_list == NULL)
{
return (TRUE);
}
else
{
GapCodecNameElem *codec_elem;
for(codec_elem = vcodec_list; codec_elem != NULL; codec_elem = (GapCodecNameElem *) codec_elem->next)
{
if(codec_elem->codec_name)
{
if(strcmp(codec_elem->codec_name, vcodec_name_chunk) == 0)
{
return (TRUE);
}
}
}
}
return (FALSE);
}
return (TRUE);
} /* end p_check_vcodec_name */
/* ----------------------------------------------------
* p_check_flags_for_matching_vcodec
* ----------------------------------------------------
* return TRUE if vcodec names fit to the specified check_flags conditions,
* FALSE if vcodec check condition failed.
*
* Note: vcodec_name_encoder value * (or NULL pointer) matches always.
*/
static void
p_check_flags_for_matching_vcodec(gint32 check_flags, gint32 *check_flags_result
, const char *videofile, GapCodecNameElem *vcodec_list, const char *vcodec_name_chunk)
{
if (TRUE == p_check_vcodec_name(check_flags
,vcodec_list
,vcodec_name_chunk))
{
*check_flags_result |= (check_flags & GAP_VID_CHCHK_FLAG_VCODEC_NAME);
}
else
{
if(gap_debug)
{
p_debug_print_vcodec_missmatch(videofile, vcodec_list, vcodec_name_chunk);
}
}
} /* end p_check_flags_for_matching_vcodec */
/* ----------------------------------------------------
* p_chunk_fetch_from_single_image
* ----------------------------------------------------
* This procedure fetches frame images from disc
*
* if possible and if the check conditions according to specified check_flags
* are fulfilled.
*
* TODO: GAP_VID_CHCHK_FLAG_SIZE
* (need to parsing image or load as image and let gimp do the parsing
* such a check can significantly reduce performance)
*
* return FALSE if fetch not possible or failed.
*/
static gboolean
p_chunk_fetch_from_single_image(const char *videofile
, unsigned char *video_frame_chunk_data // IN/OUT
, gint32 video_frame_chunk_maxsize // IN
, gint32 *video_frame_chunk_hdr_size // OUT
, gint32 *video_frame_chunk_size // OUT
, GapCodecNameElem *vcodec_list // IN
, gint32 check_flags // IN
)
{
const char *vcodec_name_chunk;
gint32 fileSize;
gint32 bytesRead;
*video_frame_chunk_size = 0;
*video_frame_chunk_hdr_size = 0;
vcodec_name_chunk = NULL;
/* no need to check GAP_VID_CHCHK_FLAG_FULL_FRAME
* (single image fetch is always a full frame)
*/
if (check_flags & GAP_VID_CHCHK_FLAG_MPEG_INTEGRITY)
{
if(gap_debug)
{
printf("p_chunk_fetch_from_single_image: single image never fits MPEG_INTEGRITY (file:%s)\n"
,videofile
);
}
return (FALSE);
}
fileSize = gap_file_get_filesize(videofile);
if (fileSize > video_frame_chunk_maxsize)
{
if(gap_debug)
{
printf("p_chunk_fetch_from_single_image: fileSize:%d biiger than max chunk buffer:%d (file:%s)\n"
,(int)fileSize
,(int)video_frame_chunk_maxsize
,videofile
);
}
return (FALSE);
}
if (check_flags & GAP_VID_CHCHK_FLAG_JPG)
{
bytesRead = gap_file_load_file_segment(videofile
,video_frame_chunk_data
,0 /* seek_index, start byte of datasegment in file */
,16 /* segment size in byets (must be a multiple of 4) */
);
if(TRUE != GVA_util_check_jpg_picture( video_frame_chunk_data
, 32 /* video_frame_chunk_size */
, 0 /* max_check_size */
, video_frame_chunk_hdr_size))
{
if(gap_debug)
{
printf("p_chunk_fetch_from_single_image: not a JPEG file (file:%s)\n"
,videofile
);
}
return (FALSE);
}
vcodec_name_chunk = "JPEG";
}
if (check_flags & GAP_VID_CHCHK_FLAG_PNG)
{
bytesRead = gap_file_load_file_segment(videofile
,video_frame_chunk_data
,0 /* seek_index, start byte of datasegment in file */
,16 /* segment size in byets (must be a multiple of 4) */
);
if(TRUE != GVA_util_check_png_picture( video_frame_chunk_data
, 32 /* video_frame_chunk_size */
, 0 /* max_check_size */
, video_frame_chunk_hdr_size))
{
if(gap_debug)
{
printf("p_chunk_fetch_from_single_image: not a PNG file (file:%s)\n"
,videofile
);
}
return (FALSE);
}
vcodec_name_chunk = "PNG ";
}
if (vcodec_name_chunk == NULL)
{
if (check_flags & GAP_VID_CHCHK_FLAG_VCODEC_NAME)
{
vcodec_name_chunk = NULL; // TODO p_get_vcodec_name_by_magic_number ....
}
}
if (TRUE != p_check_vcodec_name(check_flags
,vcodec_list
,vcodec_name_chunk))
{
if(gap_debug)
{
p_debug_print_vcodec_missmatch(videofile, vcodec_list, vcodec_name_chunk);
}
return (FALSE);
}
bytesRead = gap_file_load_file_segment(videofile
,video_frame_chunk_data
,0 /* seek_index, start byte of datasegment in file */
,fileSize /* segment size in byets (must be a multiple of 4) */
);
if (bytesRead != fileSize)
{
printf("p_chunk_fetch_from_single_image: ERROR failed reading %d bytes from file. (bytesRead:%d) (file:%s)\n"
,(int)fileSize
,(int)bytesRead
,videofile
);
return (FALSE);
}
*video_frame_chunk_size = bytesRead;
return (TRUE);
} /* end p_chunk_fetch_from_single_image */
/* ----------------------------------------------------
* p_check_chunk_fetch_possible
* ----------------------------------------------------
* This procedure checks the preconditions for a possible
* fetch of already compresses frame chunk.
* (a frame chunk can be one raw frame chunk fetched from a videofile
* or a single image frame file that shall be loaded 1:1 into memory)
* - there is only 1 videoinput track at this master_frame_nr
* - the videoframe must match 1:1 in size
* - there are no transformations (opacity, offsets ....)
*
* return the name of the input videofile if preconditions are OK,
* or NULL if not.
*/
static char *
p_check_chunk_fetch_possible(GapStoryRenderVidHandle *vidhand
, gint32 master_frame_nr /* starts at 1 */
, gint32 vid_width /* desired Video Width in pixels */
, gint32 vid_height /* desired Video Height in pixels */
, gint32 *video_frame_nr /* OUT: corresponding frame number in the input video */
, GapStoryRenderFrameRangeElem **frn_elem /* OUT: pointer to relevant frame range element */
)
{
gint l_track;
gint32 l_track_min;
gint32 l_track_max;
gchar *l_framename;
gchar *l_videofile;
gdouble l_opacity;
gdouble l_scale_x;
gdouble l_scale_y;
gdouble l_move_x;
gdouble l_move_y;
GapStoryRenderFrameRangeElem *l_frn_elem_2;
gint32 l_localframe_index;
gint32 l_local_stepcount;
gdouble l_localframe_tween_rest;
gboolean l_keep_proportions;
gboolean l_fit_width;
gboolean l_fit_height;
GapStoryRenderFrameType l_frn_type;
char *l_trak_filtermacro_file;
gdouble l_red_f;
gdouble l_green_f;
gdouble l_blue_f;
gdouble l_alpha_f;
gint l_cnt_active_tracks;
*video_frame_nr = -1;
*frn_elem = NULL;
l_videofile = NULL;
l_cnt_active_tracks = 0;
p_find_min_max_vid_tracknumbers(vidhand->frn_list, &l_track_min, &l_track_max);
/* findout if there is just one input track from type videofile
* (that possibly could be fetched as comressed videoframe_chunk
* and passed 1:1 to the calling encoder)
*/
for(l_track = MIN(GAP_STB_MAX_VID_INTERNAL_TRACKS, l_track_max); l_track >= MAX(0, l_track_min); l_track--)
{
l_framename = p_fetch_framename(vidhand->frn_list
, master_frame_nr /* starts at 1 */
, l_track
, &l_frn_type
, &l_trak_filtermacro_file
, &l_localframe_index /* used for ANIMIMAGE and Videoframe Number, -1 for all other types */
, &l_local_stepcount
, &l_localframe_tween_rest
, &l_keep_proportions
, &l_fit_width
, &l_fit_height
, &l_red_f
, &l_green_f
, &l_blue_f
, &l_alpha_f
, &l_opacity /* output opacity 0.0 upto 1.0 */
, &l_scale_x /* output 0.0 upto 10.0 where 1.0 is 1:1 */
, &l_scale_y /* output 0.0 upto 10.0 where 1.0 is 1:1 */
, &l_move_x /* output -1.0 upto 1.0 where 0.0 is centered */
, &l_move_y /* output -1.0 upto 1.0 where 0.0 is centered */
, &l_frn_elem_2 /* output selected to the relevant framerange element */
);
if(gap_debug)
{
printf("l_track:%d l_frn_type:%d\n", (int)l_track, (int)l_frn_type);
}
if(l_frn_type != GAP_FRN_SILENCE)
{
l_cnt_active_tracks++;
}
if((l_framename) || (l_frn_type == GAP_FRN_COLOR))
{
if(l_framename)
{
if((l_frn_type == GAP_FRN_MOVIE)
|| (l_frn_type == GAP_FRN_IMAGE)
|| (l_frn_type == GAP_FRN_FRAMES))
{
if(l_cnt_active_tracks == 1)
{
/* check for transformations */
if((l_opacity == 1.0)
&& (l_scale_x == 1.0)
&& (l_scale_y == 1.0)
&& (l_move_x == 0.0)
&& (l_move_y == 0.0)
&& (l_fit_width)
&& (l_fit_height)
&& (!l_keep_proportions)
&& (l_frn_elem_2->flip_request == GAP_STB_FLIP_NONE)
&& (l_frn_elem_2->mask_name == NULL)
&& (l_trak_filtermacro_file == NULL))
{
if(gap_debug)
{
printf("gap_story_render_fetch_composite_image_or_chunk: video:%s\n", l_framename);
}
l_videofile = g_strdup(l_framename);
*video_frame_nr = l_localframe_index;
*frn_elem = l_frn_elem_2;
}
else
{
if(gap_debug)
{
printf("gap_story_render_fetch_composite_image_or_chunk: there are transformations\n");
}
/* there are transformations, cant use compressed frame */
l_videofile = NULL;
break;
}
}
else
{
if(gap_debug)
{
printf("gap_story_render_fetch_composite_image_or_chunk: 2 or more videotracks found\n");
}
l_videofile = NULL;
break;
}
}
else
{
l_videofile = NULL;
break;
}
g_free(l_framename);
}
else
{
l_videofile = NULL;
break;
}
}
/* else: (vid track not used) continue */
} /* end for loop over all video tracks */
return(l_videofile);
} /* end p_check_chunk_fetch_possible */
/* ----------------------------------------------------
* p_check_basic_chunk_fetch_conditions
* ----------------------------------------------------
* check some basic conditions for raw frame chunk fetching.
* return FALSE if fetch not possible.
*/
static gboolean
p_check_basic_chunk_fetch_conditions(gint32 check_flags
, gint32 vid_width
, gint32 vid_height
, GapStoryRenderFrameRangeElem *frn_elem)
{
if(GVA_has_video_chunk_proc(frn_elem->gvahand) != TRUE)
{
if(gap_debug)
{
printf("p_check_basic_chunk_fetch_conditions: Decoder does not support raw chunk fetching\n");
}
/* chunk fetch not possible because the used decoder implementation
* does not provide the required support.
*/
return (FALSE);
}
if((check_flags & GAP_VID_CHCHK_FLAG_SIZE) != 0)
{
if((frn_elem->gvahand->width != vid_width)
|| (frn_elem->gvahand->height != vid_height) )
{
if(gap_debug)
{
printf("p_check_basic_chunk_fetch_conditions: size (%d x %d) does not match required size (%d x %d)\n"
, (int)frn_elem->gvahand->width
, (int)frn_elem->gvahand->height
, (int)vid_width
, (int)vid_height
);
}
return (FALSE);
}
}
return (TRUE);
} /* end p_check_basic_chunk_fetch_conditions */
/* ----------------------------------------------------
* p_check_and_open_video_handle
* ----------------------------------------------------
*
*/
static void
p_check_and_open_video_handle(GapStoryRenderFrameRangeElem *frn_elem
, GapStoryRenderVidHandle *vidhand
, gint32 master_frame_nr
, const gchar *videofile
)
{
if(frn_elem->gvahand == NULL)
{
/* before we open a new GVA videohandle, lets check
* if another element has already opened this videofile,
* and reuse the already open gvahand handle if possible
*/
frn_elem->gvahand = p_try_to_steal_gvahand(vidhand
, master_frame_nr
, frn_elem->basename
, frn_elem->exact_seek
);
if(frn_elem->gvahand == NULL)
{
if(vidhand->preferred_decoder)
{
frn_elem->gvahand = GVA_open_read_pref(videofile
, frn_elem->seltrack
, 1 /* aud_track */
, vidhand->preferred_decoder
, FALSE /* use MMX if available (disable_mmx == FALSE) */
);
}
else
{
frn_elem->gvahand = GVA_open_read(videofile
,frn_elem->seltrack
,1 /* aud_track */
);
}
if(frn_elem->gvahand)
{
GVA_set_fcache_size(frn_elem->gvahand, GAP_STB_RENDER_GVA_FRAMES_TO_KEEP_CACHED);
frn_elem->gvahand->do_gimp_progress = vidhand->do_gimp_progress;
if(frn_elem->exact_seek == 1)
{
/* configure the GVA Procedures for exact (but slow) seek emulaion */
frn_elem->gvahand->emulate_seek = TRUE;
}
}
}
}
} /* end p_check_and_open_video_handle */
/* ----------------------------------------------------
* p_debug_dump_chunk_to_file
* ----------------------------------------------------
*
*/
static void
p_debug_dump_chunk_to_file(const unsigned char *video_frame_chunk_data
, gint32 video_frame_chunk_size
, gint32 video_frame_nr
, gint32 master_frame_nr
)
{
FILE *fp;
char *fname;
const char *l_env;
gint32 l_dump_chunk_frames;
l_dump_chunk_frames = 0;
l_env = g_getenv("GAP_DUMP_FRAME_CHUNKS");
if(l_env)
{
l_dump_chunk_frames = atol(l_env);
}
if (master_frame_nr > l_dump_chunk_frames)
{
return;
}
fname = g_strdup_printf("zz_chunk_data_%06d.dmp", (int)video_frame_nr);
printf("DEBUG: SAVING fetched raw chunk to file:%s\n", fname);
fp = g_fopen(fname, "wb");
if(fp)
{
fwrite(video_frame_chunk_data, video_frame_chunk_size, 1, fp);
fclose(fp);
}
g_free(fname);
} /* end p_debug_dump_chunk_to_file */
/* ----------------------------------------------------
* p_story_attempt_fetch_chunk
* ----------------------------------------------------
* fetch the frame as uncompressed chunk into the buffer
* that is provide by the caller
* (via parameter video_frame_chunk_data at size video_frame_chunk_maxsize)
* if not possible return NULL.
* else return the name of the referenced videofile.
*/
static gchar*
p_story_attempt_fetch_chunk(GapStoryRenderVidHandle *vidhand
, gint32 master_frame_nr /* starts at 1 */
, gint32 vid_width /* desired Video Width in pixels */
, gint32 vid_height /* desired Video Height in pixels */
, GapCodecNameElem *vcodec_list /* IN: list of video_codec names that are compatible to the calling encoder program */
, unsigned char *video_frame_chunk_data /* OUT: */
, gint32 *video_frame_chunk_size /* OUT: total size of frame (may include a videoformat specific frameheader)*/
, gint32 video_frame_chunk_maxsize /* IN: sizelimit (larger chunks are not fetched) */
, gdouble master_framerate
, gint32 max_master_frame_nr /* the number of frames that will be encode in total */
, gint32 *video_frame_chunk_hdr_size /* OUT: size of videoformat specific frameheader (0 if has no hdr) */
, gint32 check_flags /* IN: combination of GAP_VID_CHCHK_FLAG_* flag values */
, gboolean *last_fetch_was_compressed_chunk
, const char *last_videofile
)
{
#define GAP_MPEG_ASSUMED_REFERENCE_DISTANCE 3
static gint32 last_video_frame_nr = -1;
gchar *l_framename;
gchar *l_videofile;
GapStoryRenderFrameRangeElem *l_frn_elem;
GapStoryRenderFrameRangeElem *l_frn_elem_2;
GapStoryRenderFrameType l_curr_frn_type;
gint32 l_video_frame_nr;
l_frn_elem = NULL;
*video_frame_chunk_size = 0;
*video_frame_chunk_hdr_size = 0; /* assume chunk contains no frame header */
l_videofile = NULL; /* NULL: also used as flag for "MUST fetch regular uncompressed frame" */
l_framename = NULL;
l_video_frame_nr = 1;
l_curr_frn_type = GAP_FRN_SILENCE;
l_videofile = p_check_chunk_fetch_possible(vidhand
, master_frame_nr
, vid_width
, vid_height
, &l_video_frame_nr
, &l_frn_elem
);
if((l_videofile) && (l_frn_elem) )
{
l_curr_frn_type = l_frn_elem->frn_type;
if (l_curr_frn_type != GAP_FRN_MOVIE)
{
gboolean l_singleFetchOk;
if(gap_debug)
{
printf("p_story_attempt_fetch_chunk: MASTER_FRAME_NR: %d refers to imagefile :%s \n"
, (int)master_frame_nr
, l_videofile
);
}
last_video_frame_nr = -1;
l_singleFetchOk = p_chunk_fetch_from_single_image(l_videofile
, video_frame_chunk_data
, video_frame_chunk_maxsize
, video_frame_chunk_hdr_size
, video_frame_chunk_size
, vcodec_list
, check_flags
);
if (l_singleFetchOk == TRUE)
{
/* passed all requested checks */
return(l_videofile);
}
g_free(l_videofile);
l_videofile = NULL;
return (NULL);
}
}
if(l_curr_frn_type == GAP_FRN_MOVIE)
{
if(gap_debug)
{
printf("p_story_attempt_fetch_chunk: MASTER_FRAME_NR: %d refers to videofile :%s \n"
, (int)master_frame_nr
, l_videofile
);
}
p_check_and_open_video_handle(l_frn_elem, vidhand, master_frame_nr, l_videofile);
if(l_frn_elem->gvahand)
{
/* check if framesize matches 1:1 to output video size
* and if the videodecoder does support a read procedure for compressed vodeo chunks
* TODO: should also check for compatible vcodec_name
* (cannot check that, because libmpeg3 does not deliver vcodec_name information
* and there is no implementation to fetch uncompressed chunks in other decoders)
*/
if (p_check_basic_chunk_fetch_conditions(check_flags, vid_width, vid_height, l_frn_elem) != TRUE)
{
if(gap_debug)
{
printf("p_story_attempt_fetch_chunk: MASTER_FRAME_NR: %d basic conditions NOT OK (no chunk fetch possible)\n"
,(int)master_frame_nr
);
}
}
else
{
t_GVA_RetCode l_fcr;
if(gap_debug)
{
printf("p_story_attempt_fetch_chunk: MASTER_FRAME_NR: %d video_frame_nr:%d performing CHUNK fetch\n"
,(int)master_frame_nr
,(int)l_video_frame_nr
);
}
/* FETCH compressed video chunk
* (on successful fetch the chunk contains (at least) one frame, and may start with
* MPEG typical sequence header and/or GOP header, Picture Header
*/
l_fcr = GVA_get_video_chunk(l_frn_elem->gvahand
, l_video_frame_nr
, video_frame_chunk_data
, video_frame_chunk_size
, video_frame_chunk_maxsize
);
if(gap_debug)
{
printf("p_story_attempt_fetch_chunk: AFTER CHUNK fetch max:%d chunk_data:%d chunk_size:%d\n"
,(int)video_frame_chunk_maxsize
,(int)video_frame_chunk_data
,(int)*video_frame_chunk_size
);
}
if(l_fcr == GVA_RET_OK)
{
gint l_frame_type;
gint32 check_flags_result;
gint32 check_flags_mask;
gboolean is_mpeg_integrity_check_done;
char *vcodec_name_chunk;
vcodec_name_chunk = GVA_get_codec_name(l_frn_elem->gvahand
,GVA_VIDEO_CODEC
,l_frn_elem->seltrack
);
is_mpeg_integrity_check_done = FALSE;
check_flags_result = check_flags & GAP_VID_CHCHK_FLAG_SIZE;
p_check_flags_for_matching_vcodec(check_flags, &check_flags_result
, l_videofile
, vcodec_list
, vcodec_name_chunk
);
if(vcodec_name_chunk)
{
g_free(vcodec_name_chunk);
vcodec_name_chunk = NULL;
}
l_frame_type = GVA_util_check_mpg_frame_type(video_frame_chunk_data
,*video_frame_chunk_size
);
if(gap_debug)
{
printf("\nfetched CHUNK with l_frame_type %d(1=I,2=P,3=B)\n", (int)l_frame_type);
}
/* debug code: dump first video chunks to file(s) */
p_debug_dump_chunk_to_file(video_frame_chunk_data
, *video_frame_chunk_size
, l_video_frame_nr
, master_frame_nr
);
if (l_frame_type != GVA_MPGFRAME_UNKNOWN)
{
/* known MPEG specific framehaedr information is present
* (typical when chunk was read via libmpeg3)
* in this case try to fix timecode information in the header.
*/
GVA_util_fix_mpg_timecode(video_frame_chunk_data
,*video_frame_chunk_size
,master_framerate
,master_frame_nr
);
*video_frame_chunk_hdr_size = GVA_util_calculate_mpeg_frameheader_size(video_frame_chunk_data
, *video_frame_chunk_size
);
}
check_flags_mask = check_flags & (GAP_VID_CHCHK_FLAG_MPEG_INTEGRITY | GAP_VID_CHCHK_FLAG_FULL_FRAME);
if ((l_frame_type == GVA_MPGFRAME_I_TYPE)
&& (check_flags_mask))
{
is_mpeg_integrity_check_done = TRUE;
/* intra frame has no dependencies to other frames
* can use that frame type at any place in an MPEG stream
* (or save it as JPEG)
*/
*last_fetch_was_compressed_chunk = TRUE;
if(gap_debug)
{
printf("\nReuse I-FRAME at %06d,", (int)master_frame_nr);
}
check_flags_result |= check_flags_mask;
}
check_flags_mask = check_flags & (GAP_VID_CHCHK_FLAG_JPG | GAP_VID_CHCHK_FLAG_FULL_FRAME | GAP_VID_CHCHK_FLAG_MPEG_INTEGRITY);
if (check_flags_mask)
{
if(TRUE == GVA_util_check_jpg_picture( video_frame_chunk_data
, *video_frame_chunk_size
, 32 /* max_check_size */
, video_frame_chunk_hdr_size))
{
check_flags_result |= check_flags_mask;
}
}
check_flags_mask = check_flags & (GAP_VID_CHCHK_FLAG_PNG | GAP_VID_CHCHK_FLAG_FULL_FRAME);
if (check_flags_mask)
{
if(TRUE == GVA_util_check_png_picture( video_frame_chunk_data
, *video_frame_chunk_size
, 32 /* max_check_size */
, video_frame_chunk_hdr_size))
{
check_flags_result |= check_flags_mask;
}
}
check_flags_mask = check_flags & GAP_VID_CHCHK_FLAG_MPEG_INTEGRITY;
if ((l_frame_type == GVA_MPGFRAME_P_TYPE)
&& (check_flags_mask))
{
is_mpeg_integrity_check_done = TRUE;
/* predicted frame has dependencies to the previous intra frame
* can use that frame if fetch sequence contains previous i frame
*/
if(last_videofile)
{
/* check if frame is the next in sequence in the same videofile */
if((strcmp(l_videofile, last_videofile) == 0)
&& (l_video_frame_nr == last_video_frame_nr +1))
{
*last_fetch_was_compressed_chunk = TRUE;
if(gap_debug)
{
printf("P,");
// printf(" Reuse P-FRAME Chunk at %06d\n", (int)master_frame_nr);
}
check_flags_result |= check_flags_mask;
}
}
}
check_flags_mask = check_flags & GAP_VID_CHCHK_FLAG_MPEG_INTEGRITY;
if (((l_frame_type == GVA_MPGFRAME_B_TYPE)
|| (l_frame_type == GVA_MPGFRAME_P_TYPE))
&& (is_mpeg_integrity_check_done != TRUE)
&& (check_flags_mask))
{
is_mpeg_integrity_check_done = TRUE;
/* bi-directional predicted frame has dependencies both to
* the previous intra frame or p-frame and to the following i or p-frame.
*
* can use that frame if fetch sequence contains previous i frame
* and fetch will continue until the next i or p frame.
*
* we do a simplified check if the next few (say 3) frames in storyboard sequence
* will fetch the next (3) frames in videofile sequence from the same videofile.
* this is just a guess, but maybe sufficient in most cases.
*/
if(last_videofile)
{
gboolean l_bframe_ok;
l_bframe_ok = FALSE;
/* check if frame is the next in sequence in the same videofile */
if((strcmp(l_videofile, last_videofile) == 0)
&& (l_video_frame_nr == last_video_frame_nr +1))
{
/* B-frame are not reused at the last few frames in the output video.
* (unresolved references to following p or i frames of the
* input video could be the result)
*/
if(master_frame_nr + GAP_MPEG_ASSUMED_REFERENCE_DISTANCE <= max_master_frame_nr)
{
gint ii;
gint32 l_next_video_frame_nr;
char *l_next_videofile;
l_bframe_ok = TRUE; /* now assume that B-frame may be used */
/* look ahead if the next few fetches in storyboard sequence
* will deliver the next frames from the same inputvideo
* in ascending input_video sequence at stepsize 1
* (it is assumed that the referenced P or I frame
* will be fetched in later calls then)
*/
for(ii=1; ii <= GAP_MPEG_ASSUMED_REFERENCE_DISTANCE; ii++)
{
gboolean is_next_video_the_same;
is_next_video_the_same = FALSE;
l_next_videofile = p_check_chunk_fetch_possible(vidhand
, (master_frame_nr + ii)
, vid_width
, vid_height
, &l_next_video_frame_nr
, &l_frn_elem_2
);
if(l_next_videofile)
{
if (strcmp(l_next_videofile, l_videofile) == 0)
{
is_next_video_the_same = TRUE;
}
g_free(l_next_videofile);
}
if((is_next_video_the_same == TRUE) && (l_frn_elem_2))
{
if((l_next_video_frame_nr != l_video_frame_nr +ii)
|| (l_frn_elem_2->frn_type != GAP_FRN_MOVIE))
{
l_bframe_ok = FALSE;
}
}
else
{
l_bframe_ok = FALSE;
}
if(!l_bframe_ok)
{
break;
}
} /* end for loop (look ahed next few frames in storyboard sequence) */
}
if(gap_debug)
{
if(l_bframe_ok) printf("Look Ahead B-FRAME OK to copy\n");
else printf("Look Ahead B-FRAME dont USE\n");
}
if(l_bframe_ok)
{
*last_fetch_was_compressed_chunk = TRUE;
if(gap_debug)
{
if (l_frame_type == GVA_MPGFRAME_B_TYPE)
{
printf("B,");
}
else
{
printf("p,");
}
printf(" Reuse B-FRAME Chunk at %06d\n", (int)master_frame_nr);
}
check_flags_result |= check_flags_mask;
}
}
}
}
last_video_frame_nr = l_video_frame_nr;
if(check_flags_result == check_flags)
{
if(gap_debug)
{
printf("oo OK, Reuse of fetched CHUNK type: %d (1=I/2=P/3=B) masterFrameNr:%d frame_nr:%d (last_frame_nr:%d) \n"
" check_flags_result:%d (requested check_flags:%d)\n"
,(int)l_frame_type
,(int)master_frame_nr
,(int)l_video_frame_nr
,(int)last_video_frame_nr
,(int)check_flags_result
,(int)check_flags
);
}
/* passed all requested checks */
return(l_videofile);
}
if(gap_debug)
{
printf("** sorry, no reuse of fetched CHUNK type: %d (1=I/2=P/3=B) masterFrameNr:%d frame_nr:%d (last_frame_nr:%d) \n"
" check_flags_result:%d (requeste) check_flags:%d\n"
,(int)l_frame_type
,(int)master_frame_nr
,(int)l_video_frame_nr
,(int)last_video_frame_nr
,(int)check_flags_result
,(int)check_flags
);
}
}
else
{
last_video_frame_nr = -1;
if(gap_debug)
{
printf("**# sorry, no reuse fetch failed frame_nr:%d (last_frame_nr:%d)\n"
,(int)l_video_frame_nr
,(int)last_video_frame_nr
);
}
}
}
}
}
*last_fetch_was_compressed_chunk = FALSE;
*video_frame_chunk_size = 0;
if (l_videofile != NULL)
{
g_free(l_videofile);
l_videofile = NULL;
}
return (NULL); /* Chunk fetch Not possible */
} /* end p_story_attempt_fetch_chunk */
#endif
/* ----------------------------------------------------
* gap_story_render_fetch_composite_image_or_chunk
* ----------------------------------------------------
*
* fetch composite VIDEO Image at a given master_frame_nr
* within a storyboard framerange list
*
* if desired (and possible) try directly fetch the (already compressed) Frame chunk from
* an input videofile for the master_frame_nr.
*
* This procedure is typically used in encoders that support lossless video cut.
*
* the compressed fetch depends on following conditions:
* - dont_recode_flag == TRUE
* - there is only 1 videoinput track at this master_frame_nr
* - the videodecoder must support a read_video_chunk procedure
* (libmpeg3 has this support, for the libavformat the support is available vie the gap video api)
* TODO: for future releases should also check for the same vcodec_name)
* - the videoframe must match 1:1 in size
* - there are no transformations (opacity, offsets ....)
* - there are no filtermacros to perform on the fetched frame
*
* check_flags:
* force checks if corresponding bit value is set. Supportet Bit values are:
* GAP_VID_CHCHK_FLAG_SIZE check if width and height are equal
* GAP_VID_CHCHK_FLAG_MPEG_INTEGRITY checks for MPEG P an B frames if the sequence of fetched frames
* also includes the refered I frame (before or after the current
* handled frame)
* GAP_VID_CHCHK_FLAG_JPG check if fetched cunk is a jpeg encoded frame.
* (typical for MPEG I frames)
* GAP_VID_CHCHK_FLAG_VCODEC_NAME check for a compatible vcodec_name
*
+
* RETURN TRUE on success, FALSE on ERRORS
* if an already compressed video_frame_chunk was fetched then return the size of the chunk
* in the *video_frame_chunk_size OUT Parameter.
* (both *image_id an *layer_id will deliver -1 in that case)
* if a composite image was fetched deliver its id in the *image_id OUT parameter
* and the id of the only layer in the *layer_id OUT Parameter
* the *force_keyframe OUT parameter tells the calling encoder to write an I-Frame
* (*video_frame_chunk_size will deliver 0 in that case)
*/
gboolean
gap_story_render_fetch_composite_image_or_chunk(GapStoryRenderVidHandle *vidhand
, gint32 master_frame_nr /* starts at 1 */
, gint32 vid_width /* desired Video Width in pixels */
, gint32 vid_height /* desired Video Height in pixels */
, char *filtermacro_file /* NULL if no filtermacro is used */
, gint32 *layer_id /* output: Id of the only layer in the composite image */
, gint32 *image_id /* output: Id of the only layer in the composite image */
, gboolean dont_recode_flag /* IN: TRUE try to fetch comressed chunk if possible */
, GapCodecNameElem *vcodec_list /* IN: list of video_codec names that are compatible to the calling encoder program */
, gboolean *force_keyframe /* OUT: the calling encoder should encode an I-Frame */
, unsigned char *video_frame_chunk_data /* OUT: */
, gint32 *video_frame_chunk_size /* OUT: total size of frame (may include a videoformat specific frameheader)*/
, gint32 video_frame_chunk_maxsize /* IN: sizelimit (larger chunks are not fetched) */
, gdouble master_framerate
, gint32 max_master_frame_nr /* the number of frames that will be encode in total */
, gint32 *video_frame_chunk_hdr_size /* OUT: size of videoformat specific frameheader (0 if has no hdr) */
, gint32 check_flags /* IN: combination of GAP_VID_CHCHK_FLAG_* flag values */
)
{
#define GAP_MPEG_ASSUMED_REFERENCE_DISTANCE 3
static char *last_videofile = NULL;
static gboolean last_fetch_was_compressed_chunk = FALSE;
gchar *l_videofile;
GapStoryRenderFrameRangeElem *l_frn_elem;
gboolean l_enable_chunk_fetch;
*image_id = -1;
*layer_id = -1;
*force_keyframe = FALSE;
l_frn_elem = NULL;
*video_frame_chunk_size = 0;
*video_frame_chunk_hdr_size = 0; /* assume chunk contains no frame header */
l_enable_chunk_fetch = dont_recode_flag;
if(gap_debug)
{
printf("gap_story_render_fetch_composite_image_or_chunk START master_frame_nr:%d %dx%d dont_recode:%d\n"
, (int)master_frame_nr
, (int)vid_width
, (int)vid_height
, (int)dont_recode_flag
);
}
l_videofile = NULL; /* NULL: also used as flag for "MUST fetch regular uncompressed frame" */
#ifdef GAP_ENABLE_VIDEOAPI_SUPPORT
if(filtermacro_file)
{
if(*filtermacro_file != '\0')
{
if(gap_debug)
{
printf("chunk fetch disabled due to filtermacro procesing\n");
}
/* if a filtermacro_file is force disable chunk fetching */
l_enable_chunk_fetch = FALSE;
}
}
if (l_enable_chunk_fetch)
{
if(gap_debug)
{
printf("start check if chunk fetch is possible\n");
}
l_videofile = p_story_attempt_fetch_chunk(vidhand
, master_frame_nr
, vid_width
, vid_height
, vcodec_list
, video_frame_chunk_data
, video_frame_chunk_size
, video_frame_chunk_maxsize
, master_framerate
, max_master_frame_nr
, video_frame_chunk_hdr_size
, check_flags
, &last_fetch_was_compressed_chunk
, last_videofile
);
}
if(last_fetch_was_compressed_chunk)
{
*force_keyframe = TRUE;
}
/* keep the videofile name for the next call
* (for MPEG INTEGRITY checks that require continous sequence
* in the same referenced source video
*/
if(last_videofile)
{
g_free(last_videofile);
}
last_videofile = l_videofile;
#endif
if(l_videofile != NULL)
{
/* chunk fetch was successful */
if(gap_debug)
{
printf("gap_story_render_fetch_composite_image_or_chunk: CHUNK fetch succsessful\n");
}
return(TRUE);
}
else
{
last_fetch_was_compressed_chunk = FALSE;
if(last_videofile)
{
g_free(last_videofile);
}
last_videofile = l_videofile;
if(gap_debug)
{
printf("gap_story_render_fetch_composite_image_or_chunk: CHUNK fetch not possible (doing frame fetch instead)\n");
}
*video_frame_chunk_size = 0;
*image_id = gap_story_render_fetch_composite_image(vidhand
, master_frame_nr /* starts at 1 */
, vid_width /* desired Video Width in pixels */
, vid_height /* desired Video Height in pixels */
, filtermacro_file /* NULL if no filtermacro is used */
, layer_id /* output: Id of the only layer in the composite image */
);
if(*image_id >= 0)
{
return(TRUE);
}
}
return(FALSE);
} /* end gap_story_render_fetch_composite_image_or_chunk */
|
