summaryrefslogtreecommitdiffstats
path: root/apps/gui/skin_engine/skin_parser.c
blob: a5ff64ac9d1dfac728f78544fea19e1ca120c7ab (plain)
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
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
/***************************************************************************
 *             __________               __   ___.
 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
 *                     \/            \/     \/    \/            \/
 * $Id$
 *
 * Copyright (C) 2007 Nicolas Pennequin, Dan Everton, Matthias Mohr
 *               2010 Jonathan Gordon
 *
 * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 ****************************************************************************/

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "config.h"
#include "file.h"
#include "misc.h"
#include "plugin.h"
#include "viewport.h"

#include "skin_buffer.h"
#include "skin_parser.h"
#include "tag_table.h"

#ifdef __PCTOOL__
#ifdef WPSEDITOR
#include "proxy.h"
#include "sysfont.h"
#else
#include "action.h"
#include "checkwps.h"
#include "audio.h"
#define lang_is_rtl() (false)
#define DEBUGF printf
#endif /*WPSEDITOR*/
#else
#include "debug.h"
#include "language.h"
#endif /*__PCTOOL__*/

#include <ctype.h>
#include <stdbool.h>
#include "font.h"

#include "wps_internals.h"
#include "skin_engine.h"
#include "settings.h"
#include "settings_list.h"
#if CONFIG_TUNER
#include "radio.h"
#include "tuner.h"
#endif
#include "skin_fonts.h"

#ifdef HAVE_LCD_BITMAP
#include "bmp.h"
#endif

#ifdef HAVE_ALBUMART
#include "playback.h"
#endif

#include "backdrop.h"
#include "statusbar-skinned.h"

#define WPS_ERROR_INVALID_PARAM         -1


static bool isdefault(struct skin_tag_parameter *param)
{
    return param->type == DEFAULT;
}


/* which screen are we parsing for? */
static enum screen_type curr_screen;

/* the current viewport */
static struct skin_element *curr_viewport_element;
static struct skin_viewport *curr_vp;

static struct line *curr_line;

static int follow_lang_direction = 0;

typedef int (*parse_function)(struct skin_element *element,
                              struct wps_token *token,
                              struct wps_data *wps_data);

#ifdef HAVE_LCD_BITMAP
/* add a skin_token_list item to the list chain. ALWAYS appended because some of the
 * chains require the order to be kept.
 */
static void add_to_ll_chain(struct skin_token_list **list, struct skin_token_list *item)
{
    if (*list == NULL)
        *list = item;
    else
    {
        struct skin_token_list *t = *list;
        while (t->next)
            t = t->next;
        t->next = item;
    }
}

/* traverse the image linked-list for an image */
struct gui_img* find_image(const char *label, struct wps_data *data)
{
    struct skin_token_list *list = data->images;
    while (list)
    {
        struct gui_img *img = (struct gui_img *)list->token->value.data;
        if (!strcmp(img->label,label))
            return img;
        list = list->next;
    }
    return NULL;
}

#endif

/* traverse the viewport linked list for a viewport */
struct skin_viewport* find_viewport(const char *label, bool uivp, struct wps_data *data)
{
    struct skin_element *list = data->tree;
    while (list)
    {
        struct skin_viewport *vp = (struct skin_viewport *)list->data;
        if (vp->label && (vp->is_infovp == uivp) &&
            !strcmp(vp->label, label))
            return vp;
        list = list->next;
    }
    return NULL;
}

#ifdef HAVE_LCD_BITMAP

/* create and init a new wpsll item.
 * passing NULL to token will alloc a new one.
 * You should only pass NULL for the token when the token type (table above)
 * is WPS_NO_TOKEN which means it is not stored automatically in the skins token array
 */
static struct skin_token_list *new_skin_token_list_item(struct wps_token *token,
                                                        void* token_data)
{
    struct skin_token_list *llitem = 
        (struct skin_token_list *)skin_buffer_alloc(sizeof(struct skin_token_list));
    if (!token)
        token = (struct wps_token*)skin_buffer_alloc(sizeof(struct wps_token));
    if (!llitem || !token)
        return NULL;
    llitem->next = NULL;
    llitem->token = token;
    if (token_data)
        llitem->token->value.data = token_data;
    return llitem;
}

static int parse_statusbar_tags(struct skin_element* element,
                                struct wps_token *token,
                                struct wps_data *wps_data)
{
    (void)element;
    if (token->type == SKIN_TOKEN_DRAW_INBUILTBAR)
    {
        token->value.data = (void*)&curr_vp->vp;
    }
    else
    {
        struct skin_element *def_vp = wps_data->tree;
        struct skin_viewport *default_vp = def_vp->data;
        if (def_vp->params_count == 0)
        {
            wps_data->wps_sb_tag = true;
            wps_data->show_sb_on_wps = (token->type == SKIN_TOKEN_ENABLE_THEME);
        }
        if (wps_data->show_sb_on_wps)
        {
            viewport_set_defaults(&default_vp->vp, curr_screen);
        }
        else
        {
            viewport_set_fullscreen(&default_vp->vp, curr_screen);
        }
#ifdef HAVE_REMOTE_LCD
        /* viewport_set_defaults() sets the font to FONT_UI+curr_screen.
         * This parser requires font 1 to always be the UI font, 
         * so force it back to FONT_UI and handle the screen number at the end */
        default_vp->vp.font = FONT_UI;
#endif
    }
    return 0;
}
            
static int get_image_id(int c)
{
    if(c >= 'a' && c <= 'z')
        return c - 'a';
    else if(c >= 'A' && c <= 'Z')
        return c - 'A' + 26;
    else
        return -1;
}

char *get_image_filename(const char *start, const char* bmpdir,
                                char *buf, int buf_size)
{
    snprintf(buf, buf_size, "%s/%s", bmpdir, start);
    
    return buf;
}

static int parse_image_display(struct skin_element *element,
                               struct wps_token *token,
                               struct wps_data *wps_data)
{
    char *label = element->params[0].data.text;
    char sublabel = '\0';
    int subimage;
    struct gui_img *img;
    struct image_display *id = skin_buffer_alloc(sizeof(struct image_display));

    if (element->params_count == 1 && strlen(label) <= 2)
    {
        /* backwards compatability. Allow %xd(Aa) to still work */
        sublabel = label[1];
        label[1] = '\0';
    }
    /* sanity check */
    img = find_image(label, wps_data);
    if (!img || !id)
    {
        return WPS_ERROR_INVALID_PARAM;
    }
    id->label = label;
    id->offset = 0;
    id->token = NULL;
    img->using_preloaded_icons = false;
    if (!strcmp(img->bm.data, "__list_icons__"))
    {
        img->num_subimages = Icon_Last_Themeable;
        img->using_preloaded_icons = true;
        token->type = SKIN_TOKEN_IMAGE_DISPLAY_LISTICON;
    }
    
    if (element->params_count > 1)
    {
        if (element->params[1].type == CODE)
            id->token = element->params[1].data.code->data;
        /* specify a number. 1 being the first subimage (i.e top) NOT 0 */
        else if (element->params[1].type == INTEGER)
            id->subimage = element->params[1].data.number - 1;
        if (element->params_count > 2)
            id->offset = element->params[2].data.number;
    }
    else
    {
        if ((subimage = get_image_id(sublabel)) != -1)
        {
            if (subimage >= img->num_subimages)
                return WPS_ERROR_INVALID_PARAM;
            id->subimage = subimage;
        } else {
            id->subimage = 0;
        }
    }
    token->value.data = id;
    return 0;
}

static int parse_image_load(struct skin_element *element,
                            struct wps_token *token,
                            struct wps_data *wps_data)
{
    const char* filename;
    const char* id;
    int x,y;
    struct gui_img *img;

    /* format: %x(n,filename.bmp,x,y)
       or %xl(n,filename.bmp,x,y)
       or %xl(n,filename.bmp,x,y,num_subimages)
    */

    id = element->params[0].data.text;
    filename = element->params[1].data.text;
    x = element->params[2].data.number;
    y = element->params[3].data.number;

    /* check the image number and load state */
    if(find_image(id, wps_data))
    {
        /* Invalid image ID */
        return WPS_ERROR_INVALID_PARAM;
    }
    img = (struct gui_img*)skin_buffer_alloc(sizeof(struct gui_img));
    if (!img)
        return WPS_ERROR_INVALID_PARAM;
    /* save a pointer to the filename */
    img->bm.data = (char*)filename;
    img->label = id;
    img->x = x;
    img->y = y;
    img->num_subimages = 1;
    img->always_display = false;
    img->display = -1;

    /* save current viewport */
    img->vp = &curr_vp->vp;

    if (token->type == SKIN_TOKEN_IMAGE_DISPLAY)
    {
        img->always_display = true;
    }
    else if (element->params_count == 5)
    {
        img->num_subimages = element->params[4].data.number;
        if (img->num_subimages <= 0)
            return WPS_ERROR_INVALID_PARAM;
    }
    
    struct skin_token_list *item = 
            (struct skin_token_list *)new_skin_token_list_item(NULL, img);
    if (!item)
        return WPS_ERROR_INVALID_PARAM;
    add_to_ll_chain(&wps_data->images, item);

    return 0;
}
struct skin_font {
    int id; /* the id from font_load */
    char *name;  /* filename without path and extension */
    int glyphs;  /* how many glyphs to reserve room for */
};
static struct skin_font skinfonts[MAXUSERFONTS];
static int parse_font_load(struct skin_element *element,
                           struct wps_token *token,
                           struct wps_data *wps_data)
{
    (void)wps_data; (void)token;
    int id = element->params[0].data.number;
    char *filename = element->params[1].data.text;
    int  glyphs;
    char *ptr;
    
    if(element->params_count > 2)
        glyphs = element->params[2].data.number;
    else
        glyphs = GLYPHS_TO_CACHE;
#if defined(DEBUG) || defined(SIMULATOR)
    if (skinfonts[id-FONT_FIRSTUSERFONT].name != NULL)
    {
        DEBUGF("font id %d already being used\n", id);
    }
#endif
    /* make sure the filename contains .fnt, 
     * we dont actually use it, but require it anyway */
    ptr = strchr(filename, '.');
    if (!ptr || strncmp(ptr, ".fnt", 4))
        return WPS_ERROR_INVALID_PARAM;
    skinfonts[id-FONT_FIRSTUSERFONT].id = -1;
    skinfonts[id-FONT_FIRSTUSERFONT].name = filename;
    skinfonts[id-FONT_FIRSTUSERFONT].glyphs = glyphs;

    return 0;
}


#ifdef HAVE_LCD_BITMAP

static int parse_playlistview(struct skin_element *element,
                              struct wps_token *token,
                              struct wps_data *wps_data)
{
    (void)wps_data;
    struct playlistviewer *viewer = 
        (struct playlistviewer *)skin_buffer_alloc(sizeof(struct playlistviewer));
    if (!viewer)
        return WPS_ERROR_INVALID_PARAM;
    viewer->vp = &curr_vp->vp;
    viewer->show_icons = true;
    viewer->start_offset = element->params[0].data.number;
    viewer->line = element->params[1].data.code;
    
    token->value.data = (void*)viewer;
    
    return 0;
}
#endif

#if (LCD_DEPTH > 1) || (defined(HAVE_REMOTE_LCD) && (LCD_REMOTE_DEPTH > 1))

static int parse_viewportcolour(struct skin_element *element,
                                struct wps_token *token,
                                struct wps_data *wps_data)
{
    (void)wps_data;
    struct skin_tag_parameter *param = element->params;
    struct viewport_colour *colour = 
        (struct viewport_colour *)skin_buffer_alloc(sizeof(struct viewport_colour));
    if (!colour)
        return -1;
    if (isdefault(param))
    {
        colour->colour = get_viewport_default_colour(curr_screen,
                                   token->type == SKIN_TOKEN_VIEWPORT_FGCOLOUR);
    }
    else
    {
        if (!parse_color(curr_screen, param->data.text, &colour->colour))
            return -1;
    }
    colour->vp = &curr_vp->vp;
    token->value.data = colour;
    if (element->line == curr_viewport_element->line)
    {
        if (token->type == SKIN_TOKEN_VIEWPORT_FGCOLOUR)
        {
            curr_vp->start_fgcolour = colour->colour;
            curr_vp->vp.fg_pattern = colour->colour;
        }
        else
        {
            curr_vp->start_bgcolour = colour->colour;
            curr_vp->vp.bg_pattern = colour->colour;
        }
    }
    return 0;
}

static int parse_image_special(struct skin_element *element,
                               struct wps_token *token,
                               struct wps_data *wps_data)
{
    (void)wps_data; /* kill warning */
    (void)token;
    bool error = false;

#if LCD_DEPTH > 1
    if (token->type == SKIN_TOKEN_IMAGE_BACKDROP)
    {
        char *filename = element->params[0].data.text;
        /* format: %X|filename.bmp| or %Xd */
        if (!strcmp(filename, "d"))
        {
            wps_data->backdrop = NULL;
            return 0;
        }
        else if (!error)
        {
            wps_data->backdrop = filename;
        }
    }
#endif
    /* Skip the rest of the line */
    return error ? WPS_ERROR_INVALID_PARAM : 0;
}
#endif

#endif /* HAVE_LCD_BITMAP */

static int parse_setting_and_lang(struct skin_element *element,
                                  struct wps_token *token,
                                  struct wps_data *wps_data)
{
    /* NOTE: both the string validations that happen in here will
     * automatically PASS on checkwps because its too hard to get
     * settings_list.c and english.lang built for it. 
     * If that ever changes remove the #ifndef __PCTOOL__'s here 
     */
    (void)wps_data;
    char *temp = element->params[0].data.text;
    int i;
    
    if (token->type == SKIN_TOKEN_TRANSLATEDSTRING)
    {
#ifndef __PCTOOL__
        i = lang_english_to_id(temp);
        if (i < 0)
            return WPS_ERROR_INVALID_PARAM;
#endif
    }
    else
    {
        /* Find the setting */
        for (i=0; i<nb_settings; i++)
            if (settings[i].cfg_name &&
                !strcmp(settings[i].cfg_name, temp))
                break;
#ifndef __PCTOOL__
        if (i == nb_settings)
            return WPS_ERROR_INVALID_PARAM;
#endif
    }
    /* Store the setting number */
    token->value.i = i;
    return 0;
}
static int parse_logical_if(struct skin_element *element,
                             struct wps_token *token,
                             struct wps_data *wps_data)
{
    (void)wps_data;
    char *op = element->params[1].data.text;
    struct logical_if *lif = skin_buffer_alloc(sizeof(struct logical_if));
    if (!lif)
        return -1;
    token->value.data = lif;
    lif->token = element->params[0].data.code->data;
    
    if (!strcmp(op, "="))
        lif->op = IF_EQUALS;
    if (!strcmp(op, "!="))
        lif->op = IF_NOTEQUALS;
    if (!strcmp(op, "<"))
        lif->op = IF_LESSTHAN;
    if (!strcmp(op, "<="))
        lif->op = IF_LESSTHAN_EQ;
    if (!strcmp(op, ">"))
        lif->op = IF_GREATERTHAN;
    if (!strcmp(op, ">="))
        lif->op = IF_GREATERTHAN_EQ;
    
    memcpy(&lif->operand, &element->params[2], sizeof(lif->operand));
    if (element->params_count > 3)
        lif->num_options = element->params[3].data.number;
    else
        lif->num_options = TOKEN_VALUE_ONLY;
    return 0;
    
}
static int parse_timeout_tag(struct skin_element *element,
                             struct wps_token *token,
                             struct wps_data *wps_data)
{
    (void)wps_data;
    int val = 0;
    if (element->params_count == 0)
    {
        switch (token->type)
        {
            case SKIN_TOKEN_SUBLINE_TIMEOUT:
                return -1;
            case SKIN_TOKEN_BUTTON_VOLUME:
            case SKIN_TOKEN_TRACK_STARTING:
            case SKIN_TOKEN_TRACK_ENDING:
            case SKIN_TOKEN_LASTTOUCH:
                val = 10;
                break;
            default:
                break;
        }
    }
    else
        val = element->params[0].data.number;
    token->value.i = val * TIMEOUT_UNIT;
    if (token->type == SKIN_TOKEN_SUBLINE_TIMEOUT)
        curr_line->timeout = token->value.i;
    return 0;
}

static int parse_progressbar_tag(struct skin_element* element,
                                 struct wps_token *token,
                                 struct wps_data *wps_data)
{
#ifdef HAVE_LCD_BITMAP
    struct progressbar *pb;
    struct skin_token_list *item;
    struct viewport *vp = &curr_vp->vp;
    struct skin_tag_parameter *param = element->params;
    int curr_param = 0;
    
    if (element->params_count == 0 && 
        element->tag->type != SKIN_TOKEN_PROGRESSBAR)
        return 0; /* nothing to do */
    pb = (struct progressbar*)skin_buffer_alloc(sizeof(struct progressbar));
    
    token->value.data = pb;
    
    if (!pb)
        return WPS_ERROR_INVALID_PARAM;
    pb->vp = vp;
    pb->have_bitmap_pb = false;
    pb->bm.data = NULL; /* no bitmap specified */
    pb->follow_lang_direction = follow_lang_direction > 0;
    pb->nofill = false;
    pb->slider = NULL;
    pb->invert_fill_direction = false;
    pb->horizontal = true;
    
    if (element->params_count == 0)
    {
        pb->x = 0;
        pb->width = vp->width;
        pb->height = SYSFONT_HEIGHT-2;
        pb->y = -1; /* Will be computed during the rendering */
        pb->type = element->tag->type;
        return 0;
    }
    
    item = new_skin_token_list_item(token, pb);
    if (!item)
        return -1;
    add_to_ll_chain(&wps_data->progressbars, item);
    
    /* (x,y,width,height,filename) */
    if (!isdefault(param))
        pb->x = param->data.number;
    else
        pb->x = vp->x;
    param++;
    
    if (!isdefault(param))
        pb->y = param->data.number;
    else
        pb->y = -1; /* computed at rendering */
    param++;
    
    if (!isdefault(param))
        pb->width = param->data.number;
    else
        pb->width = vp->width - pb->x;
    param++;
    
    if (!isdefault(param))
    {
        /* A zero height makes no sense - reject it */
        if (param->data.number == 0)
            return WPS_ERROR_INVALID_PARAM;

        pb->height = param->data.number;
    }
    else
    {
        if (vp->font > FONT_UI)
            pb->height = -1; /* calculate at display time */
        else
        {
#ifndef __PCTOOL__
            pb->height = font_get(vp->font)->height;
#else
            pb->height = 8;
#endif
        }
    }
    param++;
    if (!isdefault(param))
        pb->bm.data = param->data.text;
        
    curr_param = 5;
    pb->horizontal = pb->width > pb->height;
    while (curr_param < element->params_count)
    {
        param++;
        if (!strcmp(param->data.text, "invert"))
            pb->invert_fill_direction = true;
        else if (!strcmp(param->data.text, "nofill"))
            pb->nofill = true;
        else if (!strcmp(param->data.text, "slider"))
        {
            if (curr_param+1 < element->params_count)
            {
                curr_param++;
                param++;
                pb->slider = find_image(param->data.text, wps_data);
                if (!pb->slider)
                    return -1;
            }
        }
        else if (!strcmp(param->data.text, "vertical"))
        {
            pb->horizontal = false;
            if (isdefault(&element->params[3]))
                pb->height = vp->height - pb->x;
        }
        else if (!strcmp(param->data.text, "horizontal"))
            pb->horizontal = true;
            
        curr_param++;
    }
        
        
    if (token->type == SKIN_TOKEN_VOLUME)
        token->type = SKIN_TOKEN_VOLUMEBAR;
    else if (token->type == SKIN_TOKEN_BATTERY_PERCENT)
        token->type = SKIN_TOKEN_BATTERY_PERCENTBAR;
    pb->type = token->type;
        
    return 0;
    
#else
    (void)element;
    if (token->type == SKIN_TOKEN_PROGRESSBAR ||
        token->type == SKIN_TOKEN_PLAYER_PROGRESSBAR)
    {
        wps_data->full_line_progressbar = 
                        token->type == SKIN_TOKEN_PLAYER_PROGRESSBAR;
    }
    return 0;

#endif
}

#ifdef HAVE_ALBUMART
static int parse_albumart_load(struct skin_element* element,
                               struct wps_token *token,
                               struct wps_data *wps_data)
{
    struct dim dimensions;
    int albumart_slot;
    bool swap_for_rtl = lang_is_rtl() && follow_lang_direction;
    struct skin_albumart *aa = 
        (struct skin_albumart *)skin_buffer_alloc(sizeof(struct skin_albumart));
    (void)token; /* silence warning */
    if (!aa)
        return -1;

    /* reset albumart info in wps */
    aa->width = -1;
    aa->height = -1;
    aa->xalign = WPS_ALBUMART_ALIGN_CENTER; /* default */
    aa->yalign = WPS_ALBUMART_ALIGN_CENTER; /* default */

    aa->x = element->params[0].data.number;
    aa->y = element->params[1].data.number;
    aa->width = element->params[2].data.number;
    aa->height = element->params[3].data.number;
    
    aa->vp = &curr_vp->vp;
    aa->draw_handle = -1;

    /* if we got here, we parsed everything ok .. ! */
    if (aa->width < 0)
        aa->width = 0;
    else if (aa->width > LCD_WIDTH)
        aa->width = LCD_WIDTH;

    if (aa->height < 0)
        aa->height = 0;
    else if (aa->height > LCD_HEIGHT)
        aa->height = LCD_HEIGHT;

    if (swap_for_rtl)
        aa->x = LCD_WIDTH - (aa->x + aa->width);

    aa->state = WPS_ALBUMART_LOAD;
    wps_data->albumart = aa;

    dimensions.width = aa->width;
    dimensions.height = aa->height;

    albumart_slot = playback_claim_aa_slot(&dimensions);

    if (0 <= albumart_slot)
        wps_data->playback_aa_slot = albumart_slot;
        
    if (element->params_count > 4 && !isdefault(&element->params[4]))
    {
        switch (*element->params[4].data.text)
        {
            case 'l':
            case 'L':
                if (swap_for_rtl)
                    aa->xalign = WPS_ALBUMART_ALIGN_RIGHT;
                else
                    aa->xalign = WPS_ALBUMART_ALIGN_LEFT;
                break;
            case 'c':
            case 'C':
                aa->xalign = WPS_ALBUMART_ALIGN_CENTER;
                break;
            case 'r':
            case 'R':
                if (swap_for_rtl)
                    aa->xalign = WPS_ALBUMART_ALIGN_LEFT;
                else
                    aa->xalign = WPS_ALBUMART_ALIGN_RIGHT;
                break;
        }
    }
    if (element->params_count > 5 && !isdefault(&element->params[5]))
    {
        switch (*element->params[5].data.text)
        {
            case 't':
            case 'T':
                aa->yalign = WPS_ALBUMART_ALIGN_TOP;
                break;
            case 'c':
            case 'C':
                aa->yalign = WPS_ALBUMART_ALIGN_CENTER;
                break;
            case 'b':
            case 'B':
                aa->yalign = WPS_ALBUMART_ALIGN_BOTTOM;
                break;
        }
    }
    return 0;
}

#endif /* HAVE_ALBUMART */

#ifdef HAVE_TOUCHSCREEN

struct touchaction {const char* s; int action;};
static const struct touchaction touchactions[] = {
    /* generic actions, convert to screen actions on use */
    {"prev", ACTION_STD_PREV },         {"next", ACTION_STD_NEXT },
    {"rwd", ACTION_STD_PREVREPEAT },    {"ffwd", ACTION_STD_NEXTREPEAT },
    {"hotkey", ACTION_STD_HOTKEY},      {"select", ACTION_STD_OK },
    {"menu", ACTION_STD_MENU },         {"cancel", ACTION_STD_CANCEL },
    {"contextmenu", ACTION_STD_CONTEXT},{"quickscreen", ACTION_STD_QUICKSCREEN },
    /* not really WPS specific, but no equivilant ACTION_STD_* */
    {"voldown", ACTION_WPS_VOLDOWN},    {"volup", ACTION_WPS_VOLUP},

    /* WPS specific actions */
    {"browse", ACTION_WPS_BROWSE },
    {"play", ACTION_WPS_PLAY },         {"stop", ACTION_WPS_STOP },
    {"shuffle", ACTION_TOUCH_SHUFFLE }, {"repmode", ACTION_TOUCH_REPMODE },
    {"pitch", ACTION_WPS_PITCHSCREEN},  {"playlist", ACTION_WPS_VIEW_PLAYLIST }, 

#if CONFIG_TUNER    
    /* FM screen actions */
    /* Also allow browse, play, stop from WPS codes */
    {"mode", ACTION_FM_MODE },          {"record", ACTION_FM_RECORD },
    {"presets", ACTION_FM_PRESET}, 
#endif
};

static int parse_touchregion(struct skin_element *element,
                             struct wps_token *token,
                             struct wps_data *wps_data)
{
    (void)token;
    unsigned i, imax;
    struct touchregion *region = NULL;
    const char *action;
    const char pb_string[] = "progressbar";
    const char vol_string[] = "volume";
    char temp[20];

    /* format: %T(x,y,width,height,action)
     * if action starts with & the area must be held to happen
     * action is one of:
     * play  -  play/pause playback
     * stop  -  stop playback, exit the wps
     * prev  -  prev track
     * next  -  next track
     * ffwd  -  seek forward
     * rwd   -  seek backwards
     * menu  -  go back to the main menu
     * browse - go back to the file/db browser
     * shuffle - toggle shuffle mode
     * repmode - cycle the repeat mode
     * quickscreen - go into the quickscreen
     * contextmenu - open the context menu
     * playlist - go into the playlist
     * pitch - go into the pitchscreen
     * volup - increase volume by one step
     * voldown - decrease volume by one step
    */

    
    region = (struct touchregion*)skin_buffer_alloc(sizeof(struct touchregion));
    if (!region)
        return WPS_ERROR_INVALID_PARAM;

    /* should probably do some bounds checking here with the viewport... but later */
    region->action = ACTION_NONE;
    region->x = element->params[0].data.number;
    region->y = element->params[1].data.number;
    region->width = element->params[2].data.number;
    region->height = element->params[3].data.number;
    region->wvp = curr_vp;
    region->armed = false;
    region->reverse_bar = false;
    action = element->params[4].data.text;

    strcpy(temp, action);
    action = temp;
    
    if (*action == '!')
    {
        region->reverse_bar = true;
        action++;
    }

    if(!strcmp(pb_string, action))
        region->type = WPS_TOUCHREGION_SCROLLBAR;
    else if(!strcmp(vol_string, action))
        region->type = WPS_TOUCHREGION_VOLUME;
    else
    {
        region->type = WPS_TOUCHREGION_ACTION;

        if (*action == '&')
        {
            action++;
            region->repeat = true;
        }
        else
            region->repeat = false;

        imax = ARRAYLEN(touchactions);
        for (i = 0; i < imax; i++)
        {
            /* try to match with one of our touchregion screens */
            if (!strcmp(touchactions[i].s, action))
            {
                region->action = touchactions[i].action;
                break;
            }
        }
        if (region->action == ACTION_NONE)
            return WPS_ERROR_INVALID_PARAM;
    }
    struct skin_token_list *item = new_skin_token_list_item(NULL, region);
    if (!item)
        return WPS_ERROR_INVALID_PARAM;
    add_to_ll_chain(&wps_data->touchregions, item);
    return 0;
}
#endif

static bool check_feature_tag(const int type)
{
    switch (type)
    {
        case SKIN_TOKEN_RTC_PRESENT:
#if CONFIG_RTC
            return true;
#else
            return false;
#endif
        case SKIN_TOKEN_HAVE_RECORDING:
#ifdef HAVE_RECORDING
            return true;
#else
            return false;
#endif
        case SKIN_TOKEN_HAVE_TUNER:
#if CONFIG_TUNER
            if (radio_hardware_present())
                return true;
#endif
            return false;

#if CONFIG_TUNER
        case SKIN_TOKEN_HAVE_RDS:
#ifdef HAVE_RDS_CAP
            return true;
#else
            return false;
#endif /* HAVE_RDS_CAP */
#endif /* CONFIG_TUNER */
        default: /* not a tag we care about, just don't skip */
            return true;
    }
}

/*
 * initial setup of wps_data; does reset everything
 * except fields which need to survive, i.e.
 * 
 **/
static void skin_data_reset(struct wps_data *wps_data)
{
    wps_data->tree = NULL;
#ifdef HAVE_LCD_BITMAP
    wps_data->images = NULL;
    wps_data->progressbars = NULL;
#endif
#if LCD_DEPTH > 1 || defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1
    wps_data->backdrop = NULL;
#endif
#ifdef HAVE_TOUCHSCREEN
    wps_data->touchregions = NULL;
#endif
#ifdef HAVE_ALBUMART
    wps_data->albumart = NULL;
    if (wps_data->playback_aa_slot >= 0)
    {
        playback_release_aa_slot(wps_data->playback_aa_slot);
        wps_data->playback_aa_slot = -1;
    }
#endif

#ifdef HAVE_LCD_BITMAP
    wps_data->peak_meter_enabled = false;
    wps_data->wps_sb_tag = false;
    wps_data->show_sb_on_wps = false;
#else /* HAVE_LCD_CHARCELLS */
    /* progress bars */
    int i;
    for (i = 0; i < 8; i++)
    {
        wps_data->wps_progress_pat[i] = 0;
    }
    wps_data->full_line_progressbar = false;
#endif
    wps_data->wps_loaded = false;
}

#ifdef HAVE_LCD_BITMAP
static bool load_skin_bmp(struct wps_data *wps_data, struct bitmap *bitmap, char* bmpdir)
{
    (void)wps_data; /* only needed for remote targets */
    char img_path[MAX_PATH];
    int fd;
    get_image_filename(bitmap->data, bmpdir,
                       img_path, sizeof(img_path));

    /* load the image */
    int format;
#ifdef HAVE_REMOTE_LCD
    if (curr_screen == SCREEN_REMOTE)
        format = FORMAT_ANY|FORMAT_REMOTE;
    else
#endif
        format = FORMAT_ANY|FORMAT_TRANSPARENT;

    fd = open(img_path, O_RDONLY);
    if (fd < 0)
        return false;
    size_t buf_size = read_bmp_file(img_path, bitmap, 0, 
                                    format|FORMAT_RETURN_SIZE, NULL);  
    char* imgbuf = (char*)skin_buffer_alloc(buf_size);
    if (!imgbuf)
    {
        close(fd);
        return NULL;
    }
    lseek(fd, 0, SEEK_SET);
    bitmap->data = imgbuf;
    int ret = read_bmp_fd(fd, bitmap, buf_size, format, NULL);

    close(fd);
    if (ret > 0)
    {
        return true;
    }
    else
    {
        /* Abort if we can't load an image */
        DEBUGF("Couldn't load '%s'\n", img_path);
        return false;
    }
}

static bool load_skin_bitmaps(struct wps_data *wps_data, char *bmpdir)
{
    struct skin_token_list *list;
    bool retval = true; /* return false if a single image failed to load */
    /* do the progressbars */
    list = wps_data->progressbars;
    while (list)
    {
        struct progressbar *pb = (struct progressbar*)list->token->value.data;
        if (pb->bm.data)
        {
            pb->have_bitmap_pb = load_skin_bmp(wps_data, &pb->bm, bmpdir);
            if (!pb->have_bitmap_pb) /* no success */
                retval = false;
        }
        list = list->next;
    }
    /* regular images */
    list = wps_data->images;
    while (list)
    {
        struct gui_img *img = (struct gui_img*)list->token->value.data;
        if (img->bm.data)
        {
            if (img->using_preloaded_icons)
            {
                img->loaded = true;
                list->token->type = SKIN_TOKEN_IMAGE_DISPLAY_LISTICON;
            }
            else
            {
                img->loaded = load_skin_bmp(wps_data, &img->bm, bmpdir);
                if (img->loaded)
                    img->subimage_height = img->bm.height / img->num_subimages;
                else
                    retval = false;
            }
        }
        list = list->next;
    }

#if (LCD_DEPTH > 1) || (defined(HAVE_REMOTE_LCD) && (LCD_REMOTE_DEPTH > 1))
    /* Backdrop load scheme:
     * 1) %X|filename|
     * 2) load the backdrop from settings
     */
    if (wps_data->backdrop)
    {
        if (screens[curr_screen].depth == 1)
        {
            wps_data->backdrop = NULL;
            return retval;
        }
        bool needed = wps_data->backdrop[0] != '-';
        wps_data->backdrop = skin_backdrop_load(wps_data->backdrop,
                                                bmpdir, curr_screen);
        if (!wps_data->backdrop && needed)
            retval = false;
    }
#endif /* has backdrop support */
    return retval;
}

static bool skin_load_fonts(struct wps_data *data)
{
    /* don't spit out after the first failue to aid debugging */
    bool success = true;
    struct skin_element *vp_list;
    int font_id;
    /* walk though each viewport and assign its font */
    for(vp_list = data->tree; vp_list; vp_list = vp_list->next)
    {
        /* first, find the viewports that have a non-sys/ui-font font */
        struct skin_viewport *skin_vp =
                (struct skin_viewport*)vp_list->data;
        struct viewport *vp = &skin_vp->vp;


        if (vp->font <= FONT_UI)
        {   /* the usual case -> built-in fonts */
#ifdef HAVE_REMOTE_LCD
            if (vp->font == FONT_UI)
                vp->font += curr_screen;
#endif
            continue;
        }
        font_id = vp->font;

        /* now find the corresponding skin_font */
        struct skin_font *font = &skinfonts[font_id-FONT_FIRSTUSERFONT];
        if (!font->name)
        {
            if (success)
            {
                DEBUGF("font %d not specified\n", font_id);
            }
            success = false;
            continue;
        }

        /* load the font - will handle loading the same font again if
         * multiple viewports use the same */
        if (font->id < 0)
        {
            char *dot = strchr(font->name, '.');
            *dot = '\0';
            font->id = skin_font_load(font->name,
                       skinfonts[font_id-FONT_FIRSTUSERFONT].glyphs);
        }

        if (font->id < 0)
        {
            DEBUGF("Unable to load font %d: '%s.fnt'\n",
                    font_id, font->name);
            font->name = NULL; /* to stop trying to load it again if we fail */
            success = false;
            font->name = NULL;
            continue;
        }

        /* finally, assign the font_id to the viewport */
        vp->font = font->id;
    }
    return success;
}

#endif /* HAVE_LCD_BITMAP */
static int convert_viewport(struct wps_data *data, struct skin_element* element)
{
    struct skin_viewport *skin_vp = 
        (struct skin_viewport *)skin_buffer_alloc(sizeof(struct skin_viewport));
    struct screen *display = &screens[curr_screen];
    
    if (!skin_vp)
        return CALLBACK_ERROR;
        
    skin_vp->hidden_flags = 0;
    skin_vp->label = NULL;
    skin_vp->is_infovp = false;
    element->data = skin_vp;
    curr_vp = skin_vp;
    curr_viewport_element = element;
    
    viewport_set_defaults(&skin_vp->vp, curr_screen);
#ifdef HAVE_REMOTE_LCD
    /* viewport_set_defaults() sets the font to FONT_UI+curr_screen.
     * This parser requires font 1 to always be the UI font, 
     * so force it back to FONT_UI and handle the screen number at the end */
    skin_vp->vp.font = FONT_UI;
#endif
    
#if (LCD_DEPTH > 1) || (defined(HAVE_REMOTE_LCD) && (LCD_REMOTE_DEPTH > 1))
    skin_vp->start_fgcolour = skin_vp->vp.fg_pattern;
    skin_vp->start_bgcolour = skin_vp->vp.bg_pattern;
#endif
    

    struct skin_tag_parameter *param = element->params;
    if (element->params_count == 0) /* default viewport */
    {
        if (!data->tree) /* first viewport in the skin */
            data->tree = element;
        skin_vp->label = VP_DEFAULT_LABEL;
        return CALLBACK_OK;
    }
    
    if (element->params_count == 6)
    {
        if (element->tag->type == SKIN_TOKEN_UIVIEWPORT_LOAD)
        {
            skin_vp->is_infovp = true;
            if (isdefault(param))
            {
                skin_vp->hidden_flags = VP_NEVER_VISIBLE;
                skin_vp->label = VP_DEFAULT_LABEL;
            }
            else
            {
                skin_vp->hidden_flags = VP_NEVER_VISIBLE;
                skin_vp->label = param->data.text;
            }
        }
        else
        {
                skin_vp->hidden_flags = VP_DRAW_HIDEABLE|VP_DRAW_HIDDEN;
                skin_vp->label = param->data.text;
        }
        param++;
    }
    /* x */
    if (!isdefault(param))
    {
        skin_vp->vp.x = param->data.number;
        if (param->data.number < 0)
            skin_vp->vp.x += display->lcdwidth;
    }
    param++;
    /* y */
    if (!isdefault(param))
    {
        skin_vp->vp.y = param->data.number;
        if (param->data.number < 0)
            skin_vp->vp.y += display->lcdheight;
    }
    param++;
    /* width */
    if (!isdefault(param))
    {
        skin_vp->vp.width = param->data.number;
        if (param->data.number < 0)
            skin_vp->vp.width = (skin_vp->vp.width + display->lcdwidth) - skin_vp->vp.x;
    }
    else
    {
        skin_vp->vp.width = display->lcdwidth - skin_vp->vp.x;
    }
    param++;
    /* height */
    if (!isdefault(param))
    {
        skin_vp->vp.height = param->data.number;
        if (param->data.number < 0)
            skin_vp->vp.height = (skin_vp->vp.height + display->lcdheight) - skin_vp->vp.y;
    }
    else
    {
        skin_vp->vp.height = display->lcdheight - skin_vp->vp.y;
    }
    param++;
#ifdef HAVE_LCD_BITMAP
    /* font */
    if (!isdefault(param))
    {
        skin_vp->vp.font = param->data.number;
    }
#endif    

    return CALLBACK_OK;
    
}

static int skin_element_callback(struct skin_element* element, void* data)
{
    struct wps_data *wps_data = (struct wps_data *)data;
    struct wps_token *token;
    parse_function function = NULL;
    
    switch (element->type)
    {
        /* IMPORTANT: element params are shared, so copy them if needed
         *            or use then NOW, dont presume they have a long lifespan
         */
        case TAG:
        {
            token = (struct wps_token*)skin_buffer_alloc(sizeof(struct wps_token));
            memset(token, 0, sizeof(*token));
            token->type = element->tag->type;
            
            if (element->tag->flags&SKIN_RTC_REFRESH)
            {
#if CONFIG_RTC
                curr_line->update_mode |= SKIN_REFRESH_DYNAMIC;
#else
                curr_line->update_mode |= SKIN_REFRESH_STATIC;
#endif
            }
            else
                curr_line->update_mode |= element->tag->flags&SKIN_REFRESH_ALL;
            
            element->data = token;
            
            /* Some tags need special handling for the tag, so add them here */
            switch (token->type)
            {
                case SKIN_TOKEN_ALIGN_LANGDIRECTION:
                    follow_lang_direction = 2;
                    break;
                case SKIN_TOKEN_LOGICAL_IF:
                    function = parse_logical_if;
                    break;
                case SKIN_TOKEN_PROGRESSBAR:
                case SKIN_TOKEN_VOLUME:
                case SKIN_TOKEN_BATTERY_PERCENT:
                case SKIN_TOKEN_PLAYER_PROGRESSBAR:
                    function = parse_progressbar_tag;
                    break;
                case SKIN_TOKEN_SUBLINE_TIMEOUT:
                case SKIN_TOKEN_BUTTON_VOLUME:
                case SKIN_TOKEN_TRACK_STARTING:
                case SKIN_TOKEN_TRACK_ENDING:
                case SKIN_TOKEN_LASTTOUCH:
                    function = parse_timeout_tag;
                    break;
#ifdef HAVE_LCD_BITMAP
                case SKIN_TOKEN_DISABLE_THEME:
                case SKIN_TOKEN_ENABLE_THEME:
                case SKIN_TOKEN_DRAW_INBUILTBAR:
                    function = parse_statusbar_tags;
                    break;
#endif
                case SKIN_TOKEN_FILE_DIRECTORY:
                    token->value.i = element->params[0].data.number;
                    break;
#if (LCD_DEPTH > 1) || (defined(HAVE_REMOTE_LCD) && (LCD_REMOTE_DEPTH > 1))
                case SKIN_TOKEN_VIEWPORT_FGCOLOUR:
                case SKIN_TOKEN_VIEWPORT_BGCOLOUR:
                    function = parse_viewportcolour;
                    break;
                case SKIN_TOKEN_IMAGE_BACKDROP:
                    function = parse_image_special;
                    break;
#endif
                case SKIN_TOKEN_TRANSLATEDSTRING:
                case SKIN_TOKEN_SETTING:
                    function = parse_setting_and_lang;
                    break;
#ifdef HAVE_LCD_BITMAP
                case SKIN_TOKEN_VIEWPORT_CUSTOMLIST:
                    function = parse_playlistview;
                    break;
                case SKIN_TOKEN_LOAD_FONT:
                    function = parse_font_load;
                    break;
                case SKIN_TOKEN_VIEWPORT_ENABLE:
                case SKIN_TOKEN_UIVIEWPORT_ENABLE:
                    token->value.data = element->params[0].data.text;
                    break;
                case SKIN_TOKEN_IMAGE_PRELOAD_DISPLAY:
                    function = parse_image_display;
                    break;
                case SKIN_TOKEN_IMAGE_PRELOAD:
                case SKIN_TOKEN_IMAGE_DISPLAY:
                    function = parse_image_load;
                    break;
#endif
#ifdef HAVE_TOUCHSCREEN
                case SKIN_TOKEN_TOUCHREGION:
                    function = parse_touchregion;
                    break;
#endif
#ifdef HAVE_ALBUMART
                case SKIN_TOKEN_ALBUMART_DISPLAY:
                    if (wps_data->albumart)
                        wps_data->albumart->vp = &curr_vp->vp;
                    break;
                case SKIN_TOKEN_ALBUMART_LOAD:
                    function = parse_albumart_load;
                    break;
#endif
                default:
                    break;
            }
            if (function)
            {
                if (function(element, token, wps_data) < 0)
                    return CALLBACK_ERROR;
            }
            /* tags that start with 'F', 'I' or 'D' are for the next file */
            if ( *(element->tag->name) == 'I' || *(element->tag->name) == 'F' ||
                 *(element->tag->name) == 'D')
                token->next = true;
            if (follow_lang_direction > 0 )
                follow_lang_direction--;
            break;
        }
        case VIEWPORT:
            return convert_viewport(wps_data, element);
        case LINE:
        {
            struct line *line = 
                (struct line *)skin_buffer_alloc(sizeof(struct line));
            line->update_mode = SKIN_REFRESH_STATIC;
            line->timeout = DEFAULT_SUBLINE_TIME_MULTIPLIER * TIMEOUT_UNIT;
            curr_line = line;
            element->data = line;
        }
        break;
        case LINE_ALTERNATOR:
        {
            struct line_alternator *alternator = 
                (struct line_alternator *)skin_buffer_alloc(sizeof(struct line_alternator));
            alternator->current_line = 0;
#ifndef __PCTOOL__
            alternator->last_change_tick = current_tick;
#endif
            element->data = alternator;
        }
        break;
        case CONDITIONAL:
        {
            struct conditional *conditional = 
                (struct conditional *)skin_buffer_alloc(sizeof(struct conditional));
            conditional->last_value = -1;
            conditional->token = element->data;
            element->data = conditional;
            if (!check_feature_tag(element->tag->type))
            {
                return FEATURE_NOT_AVAILABLE;
            }
            return CALLBACK_OK;
        }
        case TEXT:
            curr_line->update_mode |= SKIN_REFRESH_STATIC;
            break;
        default:
            break;
    }
    return CALLBACK_OK;
}

/* to setup up the wps-data from a format-buffer (isfile = false)
   from a (wps-)file (isfile = true)*/
bool skin_data_load(enum screen_type screen, struct wps_data *wps_data,
                    const char *buf, bool isfile)
{
    char *wps_buffer = NULL;
    if (!wps_data || !buf)
        return false;
#ifdef HAVE_ALBUMART
    int status;
    struct mp3entry *curtrack;
    long offset;
    struct skin_albumart old_aa = {.state = WPS_ALBUMART_NONE};
    if (wps_data->albumart)
    {
        old_aa.state = wps_data->albumart->state;
        old_aa.height = wps_data->albumart->height;
        old_aa.width = wps_data->albumart->width;
    }
#endif
#ifdef HAVE_LCD_BITMAP
    int i;
    for (i=0;i<MAXUSERFONTS;i++)
    {
        skinfonts[i].id = -1;
        skinfonts[i].name = NULL;
    }
#endif
#ifdef DEBUG_SKIN_ENGINE
    if (isfile && debug_wps)
    {
        DEBUGF("\n=====================\nLoading '%s'\n=====================\n", buf);
    }
#endif


    skin_data_reset(wps_data);
    wps_data->wps_loaded = false;
    curr_screen = screen;
    curr_line = NULL;
    curr_vp = NULL;
    curr_viewport_element = NULL;

    if (isfile)
    {
        int fd = open_utf8(buf, O_RDONLY);

        if (fd < 0)
            return false;

        /* get buffer space from the plugin buffer */
        size_t buffersize = 0;
        wps_buffer = (char *)plugin_get_buffer(&buffersize);

        if (!wps_buffer)
            return false;

        /* copy the file's content to the buffer for parsing,
           ensuring that every line ends with a newline char. */
        unsigned int start = 0;
        while(read_line(fd, wps_buffer + start, buffersize - start) > 0)
        {
            start += strlen(wps_buffer + start);
            if (start < buffersize - 1)
            {
                wps_buffer[start++] = '\n';
                wps_buffer[start] = 0;
            }
        }
        close(fd);
        if (start <= 0)
            return false;
    }
    else
    {
        wps_buffer = (char*)buf;
    }
#if LCD_DEPTH > 1 || defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1
    wps_data->backdrop = "-";
#endif
    /* parse the skin source */
    skin_buffer_save_position();
    wps_data->tree = skin_parse(wps_buffer, skin_element_callback, wps_data);
    if (!wps_data->tree) {
        skin_data_reset(wps_data);
        skin_buffer_restore_position();
        return false;
    }

#ifdef HAVE_LCD_BITMAP
    char bmpdir[MAX_PATH];
    if (isfile)
    {
        /* get the bitmap dir */
        char *dot = strrchr(buf, '.');
        strlcpy(bmpdir, buf, dot - buf + 1);
    }
    else
    {   /* fall back to backdrop dir for built-in themes */
        /* no get_user_file_path(), assuming we ship bmps for built-in themes */
        snprintf(bmpdir, MAX_PATH, "%s", BACKDROP_DIR);
    }
    /* load the bitmaps that were found by the parsing */
    if (!load_skin_bitmaps(wps_data, bmpdir) ||
        !skin_load_fonts(wps_data)) 
    {
        skin_data_reset(wps_data);
        skin_buffer_restore_position();
        return false;
    }
#endif
#if defined(HAVE_ALBUMART) && !defined(__PCTOOL__)
    status = audio_status();
    if (status & AUDIO_STATUS_PLAY)
    {
        struct skin_albumart *aa = wps_data->albumart;
        if (aa && ((aa->state && !old_aa.state) ||
            (aa->state &&
            (((old_aa.height != aa->height) ||
            (old_aa.width != aa->width))))))
        {
            curtrack = audio_current_track();
            offset = curtrack->offset;
            audio_stop();
            if (!(status & AUDIO_STATUS_PAUSE))
                audio_play(offset);
        }
    }
#endif
    wps_data->wps_loaded = true;
#ifdef DEBUG_SKIN_ENGINE
 //   if (isfile && debug_wps)
 //       debug_skin_usage();
#endif
    return true;
}