Repository navigation
Expand file tree
/
Copy pathSDL_video.c
More file actions
4823 lines (4156 loc) · 137 KB
/
Copy pathSDL_video.c
File metadata and controls
4823 lines (4156 loc) · 137 KB
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
/*
Simple DirectMedia Layer
Copyright (C) 1997-2023 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../SDL_internal.h"
/* The high-level video driver subsystem */
#include "SDL.h"
#include "SDL_video.h"
#include "SDL_sysvideo.h"
#include "SDL_blit.h"
#include "SDL_pixels_c.h"
#include "SDL_rect_c.h"
#include "../events/SDL_events_c.h"
#include "../timer/SDL_timer_c.h"
#include "SDL_syswm.h"
#if SDL_VIDEO_OPENGL
#include "SDL_opengl.h"
#endif /* SDL_VIDEO_OPENGL */
#if SDL_VIDEO_OPENGL_ES && !SDL_VIDEO_OPENGL
#include "SDL_opengles.h"
#endif /* SDL_VIDEO_OPENGL_ES && !SDL_VIDEO_OPENGL */
/* GL and GLES2 headers conflict on Linux 32 bits */
#if SDL_VIDEO_OPENGL_ES2 && !SDL_VIDEO_OPENGL
#include "SDL_opengles2.h"
#endif /* SDL_VIDEO_OPENGL_ES2 && !SDL_VIDEO_OPENGL */
#if !SDL_VIDEO_OPENGL
#ifndef GL_CONTEXT_RELEASE_BEHAVIOR_KHR
#define GL_CONTEXT_RELEASE_BEHAVIOR_KHR 0x82FB
#endif
#endif
#ifdef __EMSCRIPTEN__
#include <emscripten.h>
#endif
#ifdef __LINUX__
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#endif
/* Available video drivers */
static VideoBootStrap *bootstrap[] = {
#if SDL_VIDEO_DRIVER_COCOA
&COCOA_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_X11
&X11_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_WAYLAND
&Wayland_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_VIVANTE
&VIVANTE_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_DIRECTFB
&DirectFB_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_WINDOWS
&WINDOWS_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_WINRT
&WINRT_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_HAIKU
&HAIKU_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_PANDORA
&PND_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_UIKIT
&UIKIT_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_ANDROID
&Android_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_PS2
&PS2_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_PSP
&PSP_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_VITA
&VITA_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_N3DS
&N3DS_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_KMSDRM
&KMSDRM_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_RISCOS
&RISCOS_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_RPI
&RPI_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_NACL
&NACL_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_EMSCRIPTEN
&Emscripten_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_QNX
&QNX_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_OFFSCREEN
&OFFSCREEN_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_NGAGE
&NGAGE_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_OS2
&OS2DIVE_bootstrap,
&OS2VMAN_bootstrap,
#endif
#if SDL_VIDEO_DRIVER_DUMMY
&DUMMY_bootstrap,
#if SDL_INPUT_LINUXEV
&DUMMY_evdev_bootstrap,
#endif
#endif
NULL
};
#define CHECK_WINDOW_MAGIC(window, retval) \
if (!_this) { \
SDL_UninitializedVideo(); \
return retval; \
} \
if (!window || window->magic != &_this->window_magic) { \
SDL_SetError("Invalid window"); \
return retval; \
}
#define CHECK_DISPLAY_INDEX(displayIndex, retval) \
if (!_this) { \
SDL_UninitializedVideo(); \
return retval; \
} \
if (displayIndex < 0 || displayIndex >= _this->num_displays) { \
SDL_SetError("displayIndex must be in the range 0 - %d", \
_this->num_displays - 1); \
return retval; \
}
#define FULLSCREEN_MASK (SDL_WINDOW_FULLSCREEN_DESKTOP | SDL_WINDOW_FULLSCREEN)
#if defined(__MACOSX__) && defined(SDL_VIDEO_DRIVER_COCOA)
/* Support for Mac OS X fullscreen spaces */
extern SDL_bool Cocoa_IsWindowInFullscreenSpace(SDL_Window * window);
extern SDL_bool Cocoa_SetWindowFullscreenSpace(SDL_Window * window, SDL_bool state);
#endif
/* Convenience functions for reading driver flags */
static SDL_bool DisableDisplayModeSwitching(_THIS)
{
return !!(_this->quirk_flags & VIDEO_DEVICE_QUIRK_DISABLE_DISPLAY_MODE_SWITCHING);
}
static SDL_bool DisableUnsetFullscreenOnMinimize(_THIS)
{
return !!(_this->quirk_flags & VIDEO_DEVICE_QUIRK_DISABLE_UNSET_FULLSCREEN_ON_MINIMIZE);
}
/* Support for framebuffer emulation using an accelerated renderer */
#define SDL_WINDOWTEXTUREDATA "_SDL_WindowTextureData"
typedef struct
{
SDL_Renderer *renderer;
SDL_Texture *texture;
void *pixels;
int pitch;
int bytes_per_pixel;
} SDL_WindowTextureData;
static Uint32 SDL_DefaultGraphicsBackends(SDL_VideoDevice *_this)
{
#if (SDL_VIDEO_OPENGL && __MACOSX__) || (__IPHONEOS__ && !TARGET_OS_MACCATALYST) || __ANDROID__ || __NACL__
if (_this->GL_CreateContext != NULL) {
return SDL_WINDOW_OPENGL;
}
#endif
#if SDL_VIDEO_METAL && (TARGET_OS_MACCATALYST || __MACOSX__ || __IPHONEOS__)
if (_this->Metal_CreateView != NULL) {
return SDL_WINDOW_METAL;
}
#endif
return 0;
}
static int SDL_CreateWindowTexture(SDL_VideoDevice *_this, SDL_Window *window, Uint32 *format, void **pixels, int *pitch)
{
SDL_RendererInfo info;
SDL_WindowTextureData *data = SDL_GetWindowData(window, SDL_WINDOWTEXTUREDATA);
int i;
int w, h;
SDL_GetWindowSizeInPixels(window, &w, &h);
if (data == NULL) {
SDL_Renderer *renderer = NULL;
const char *hint = SDL_GetHint(SDL_HINT_FRAMEBUFFER_ACCELERATION);
const SDL_bool specific_accelerated_renderer = (hint && *hint != '0' && *hint != '1' &&
SDL_strcasecmp(hint, "true") != 0 &&
SDL_strcasecmp(hint, "false") != 0 &&
SDL_strcasecmp(hint, "software") != 0);
/* Check to see if there's a specific driver requested */
if (specific_accelerated_renderer) {
for (i = 0; i < SDL_GetNumRenderDrivers(); ++i) {
SDL_GetRenderDriverInfo(i, &info);
if (SDL_strcasecmp(info.name, hint) == 0) {
renderer = SDL_CreateRenderer(window, i, 0);
break;
}
}
if (renderer == NULL || (SDL_GetRendererInfo(renderer, &info) == -1)) {
if (renderer) {
SDL_DestroyRenderer(renderer);
}
return SDL_SetError("Requested renderer for " SDL_HINT_FRAMEBUFFER_ACCELERATION " is not available");
}
/* if it was specifically requested, even if SDL_RENDERER_ACCELERATED isn't set, we'll accept this renderer. */
} else {
for (i = 0; i < SDL_GetNumRenderDrivers(); ++i) {
SDL_GetRenderDriverInfo(i, &info);
if (SDL_strcmp(info.name, "software") != 0) {
renderer = SDL_CreateRenderer(window, i, 0);
if (renderer && (SDL_GetRendererInfo(renderer, &info) == 0) && (info.flags & SDL_RENDERER_ACCELERATED)) {
break; /* this will work. */
}
if (renderer) { /* wasn't accelerated, etc, skip it. */
SDL_DestroyRenderer(renderer);
renderer = NULL;
}
}
}
if (renderer == NULL) {
return SDL_SetError("No hardware accelerated renderers available");
}
}
SDL_assert(renderer != NULL); /* should have explicitly checked this above. */
/* Create the data after we successfully create the renderer (bug #1116) */
data = (SDL_WindowTextureData *)SDL_calloc(1, sizeof(*data));
if (data == NULL) {
SDL_DestroyRenderer(renderer);
return SDL_OutOfMemory();
}
SDL_SetWindowData(window, SDL_WINDOWTEXTUREDATA, data);
data->renderer = renderer;
} else {
if (SDL_GetRendererInfo(data->renderer, &info) == -1) {
return -1;
}
}
/* Free any old texture and pixel data */
if (data->texture) {
SDL_DestroyTexture(data->texture);
data->texture = NULL;
}
SDL_free(data->pixels);
data->pixels = NULL;
/* Find the first format without an alpha channel */
*format = info.texture_formats[0];
for (i = 0; i < (int)info.num_texture_formats; ++i) {
if (!SDL_ISPIXELFORMAT_FOURCC(info.texture_formats[i]) &&
!SDL_ISPIXELFORMAT_ALPHA(info.texture_formats[i])) {
*format = info.texture_formats[i];
break;
}
}
data->texture = SDL_CreateTexture(data->renderer, *format,
SDL_TEXTUREACCESS_STREAMING,
w, h);
if (!data->texture) {
/* codechecker_false_positive [Malloc] Static analyzer doesn't realize allocated `data` is saved to SDL_WINDOWTEXTUREDATA and not leaked here. */
return -1; /* NOLINT(clang-analyzer-unix.Malloc) */
}
/* Create framebuffer data */
data->bytes_per_pixel = SDL_BYTESPERPIXEL(*format);
data->pitch = (((w * data->bytes_per_pixel) + 3) & ~3);
{
/* Make static analysis happy about potential SDL_malloc(0) calls. */
const size_t allocsize = (size_t)h * data->pitch;
data->pixels = SDL_malloc((allocsize > 0) ? allocsize : 1);
if (!data->pixels) {
return SDL_OutOfMemory();
}
}
*pixels = data->pixels;
*pitch = data->pitch;
/* Make sure we're not double-scaling the viewport */
SDL_RenderSetViewport(data->renderer, NULL);
return 0;
}
static SDL_VideoDevice *_this = NULL;
static SDL_atomic_t SDL_messagebox_count;
static int SDL_UpdateWindowTexture(SDL_VideoDevice *unused, SDL_Window *window, const SDL_Rect *rects, int numrects)
{
SDL_WindowTextureData *data;
SDL_Rect rect;
void *src;
int w, h;
SDL_GetWindowSizeInPixels(window, &w, &h);
data = SDL_GetWindowData(window, SDL_WINDOWTEXTUREDATA);
if (data == NULL || !data->texture) {
return SDL_SetError("No window texture data");
}
/* Update a single rect that contains subrects for best DMA performance */
if (SDL_GetSpanEnclosingRect(w, h, numrects, rects, &rect)) {
src = (void *)((Uint8 *)data->pixels +
rect.y * data->pitch +
rect.x * data->bytes_per_pixel);
if (SDL_UpdateTexture(data->texture, &rect, src, data->pitch) < 0) {
return -1;
}
if (SDL_RenderCopy(data->renderer, data->texture, NULL, NULL) < 0) {
return -1;
}
SDL_RenderPresent(data->renderer);
}
return 0;
}
static void SDL_DestroyWindowTexture(SDL_VideoDevice *unused, SDL_Window *window)
{
SDL_WindowTextureData *data;
data = SDL_SetWindowData(window, SDL_WINDOWTEXTUREDATA, NULL);
if (data == NULL) {
return;
}
if (data->texture) {
SDL_DestroyTexture(data->texture);
}
if (data->renderer) {
SDL_DestroyRenderer(data->renderer);
}
SDL_free(data->pixels);
SDL_free(data);
}
static int SDLCALL cmpmodes(const void *A, const void *B)
{
const SDL_DisplayMode *a = (const SDL_DisplayMode *)A;
const SDL_DisplayMode *b = (const SDL_DisplayMode *)B;
if (a == b) {
return 0;
} else if (a->w != b->w) {
return b->w - a->w;
} else if (a->h != b->h) {
return b->h - a->h;
} else if (SDL_BITSPERPIXEL(a->format) != SDL_BITSPERPIXEL(b->format)) {
return SDL_BITSPERPIXEL(b->format) - SDL_BITSPERPIXEL(a->format);
} else if (SDL_PIXELLAYOUT(a->format) != SDL_PIXELLAYOUT(b->format)) {
return SDL_PIXELLAYOUT(b->format) - SDL_PIXELLAYOUT(a->format);
} else if (a->refresh_rate != b->refresh_rate) {
return b->refresh_rate - a->refresh_rate;
}
return 0;
}
static int SDL_UninitializedVideo()
{
return SDL_SetError("Video subsystem has not been initialized");
}
int SDL_GetNumVideoDrivers(void)
{
return SDL_arraysize(bootstrap) - 1;
}
const char *SDL_GetVideoDriver(int index)
{
if (index >= 0 && index < SDL_GetNumVideoDrivers()) {
return bootstrap[index]->name;
}
return NULL;
}
/*
* Initialize the video and event subsystems -- determine native pixel format
*/
int SDL_VideoInit(const char *driver_name)
{
SDL_VideoDevice *video;
SDL_bool init_events = SDL_FALSE;
SDL_bool init_keyboard = SDL_FALSE;
SDL_bool init_mouse = SDL_FALSE;
SDL_bool init_touch = SDL_FALSE;
int i = 0;
/* Check to make sure we don't overwrite '_this' */
if (_this != NULL) {
SDL_VideoQuit();
}
#if !SDL_TIMERS_DISABLED
SDL_TicksInit();
#endif
/* Start the event loop */
if (SDL_InitSubSystem(SDL_INIT_EVENTS) < 0) {
goto pre_driver_error;
}
init_events = SDL_TRUE;
if (SDL_KeyboardInit() < 0) {
goto pre_driver_error;
}
init_keyboard = SDL_TRUE;
if (SDL_MouseInit() < 0) {
goto pre_driver_error;
}
init_mouse = SDL_TRUE;
if (SDL_TouchInit() < 0) {
goto pre_driver_error;
}
init_touch = SDL_TRUE;
/* Select the proper video driver */
video = NULL;
if (driver_name == NULL) {
driver_name = SDL_GetHint(SDL_HINT_VIDEODRIVER);
}
if (driver_name != NULL && *driver_name != 0) {
const char *driver_attempt = driver_name;
while (driver_attempt != NULL && *driver_attempt != 0 && video == NULL) {
const char *driver_attempt_end = SDL_strchr(driver_attempt, ',');
size_t driver_attempt_len = (driver_attempt_end != NULL) ? (driver_attempt_end - driver_attempt)
: SDL_strlen(driver_attempt);
for (i = 0; bootstrap[i]; ++i) {
if ((driver_attempt_len == SDL_strlen(bootstrap[i]->name)) &&
(SDL_strncasecmp(bootstrap[i]->name, driver_attempt, driver_attempt_len) == 0)) {
video = bootstrap[i]->create();
break;
}
}
driver_attempt = (driver_attempt_end != NULL) ? (driver_attempt_end + 1) : NULL;
}
} else {
for (i = 0; bootstrap[i]; ++i) {
video = bootstrap[i]->create();
if (video != NULL) {
break;
}
}
}
if (video == NULL) {
if (driver_name) {
SDL_SetError("%s not available", driver_name);
goto pre_driver_error;
}
SDL_SetError("No available video device");
goto pre_driver_error;
}
/* From this point on, use SDL_VideoQuit to cleanup on error, rather than
pre_driver_error. */
_this = video;
_this->name = bootstrap[i]->name;
_this->next_object_id = 1;
_this->thread = SDL_ThreadID();
/* Set some very sane GL defaults */
_this->gl_config.driver_loaded = 0;
_this->gl_config.dll_handle = NULL;
SDL_GL_ResetAttributes();
_this->current_glwin_tls = SDL_TLSCreate();
_this->current_glctx_tls = SDL_TLSCreate();
/* Initialize the video subsystem */
if (_this->VideoInit(_this) < 0) {
SDL_VideoQuit();
return -1;
}
/* Make sure some displays were added */
if (_this->num_displays == 0) {
SDL_VideoQuit();
return SDL_SetError("The video driver did not add any displays");
}
/* Disable the screen saver by default. This is a change from <= 2.0.1,
but most things using SDL are games or media players; you wouldn't
want a screensaver to trigger if you're playing exclusively with a
joystick, or passively watching a movie. Things that use SDL but
function more like a normal desktop app should explicitly reenable the
screensaver. */
if (!SDL_GetHintBoolean(SDL_HINT_VIDEO_ALLOW_SCREENSAVER, SDL_FALSE)) {
SDL_DisableScreenSaver();
}
/* If we don't use a screen keyboard, turn on text input by default,
otherwise programs that expect to get text events without enabling
UNICODE input won't get any events.
Actually, come to think of it, you needed to call SDL_EnableUNICODE(1)
in SDL 1.2 before you got text input events. Hmm...
*/
if (!SDL_HasScreenKeyboardSupport()) {
SDL_StartTextInput();
}
/* We're ready to go! */
return 0;
pre_driver_error:
SDL_assert(_this == NULL);
if (init_touch) {
SDL_TouchQuit();
}
if (init_mouse) {
SDL_MouseQuit();
}
if (init_keyboard) {
SDL_KeyboardQuit();
}
if (init_events) {
SDL_QuitSubSystem(SDL_INIT_EVENTS);
}
return -1;
}
const char *SDL_GetCurrentVideoDriver()
{
if (_this == NULL) {
SDL_UninitializedVideo();
return NULL;
}
return _this->name;
}
SDL_VideoDevice *SDL_GetVideoDevice(void)
{
return _this;
}
SDL_bool SDL_OnVideoThread()
{
return (_this && SDL_ThreadID() == _this->thread) ? SDL_TRUE : SDL_FALSE;
}
int SDL_AddBasicVideoDisplay(const SDL_DisplayMode *desktop_mode)
{
SDL_VideoDisplay display;
SDL_zero(display);
if (desktop_mode) {
display.desktop_mode = *desktop_mode;
}
display.current_mode = display.desktop_mode;
return SDL_AddVideoDisplay(&display, SDL_FALSE);
}
int SDL_AddVideoDisplay(const SDL_VideoDisplay *display, SDL_bool send_event)
{
SDL_VideoDisplay *displays;
int index = -1;
displays =
SDL_realloc(_this->displays,
(_this->num_displays + 1) * sizeof(*displays));
if (displays) {
index = _this->num_displays++;
displays[index] = *display;
displays[index].device = _this;
_this->displays = displays;
if (display->name) {
displays[index].name = SDL_strdup(display->name);
} else {
char name[32];
SDL_itoa(index, name, 10);
displays[index].name = SDL_strdup(name);
}
if (send_event) {
SDL_SendDisplayEvent(&_this->displays[index], SDL_DISPLAYEVENT_CONNECTED, 0);
}
} else {
SDL_OutOfMemory();
}
return index;
}
void SDL_DelVideoDisplay(int index)
{
if (index < 0 || index >= _this->num_displays) {
return;
}
SDL_SendDisplayEvent(&_this->displays[index], SDL_DISPLAYEVENT_DISCONNECTED, 0);
if (index < (_this->num_displays - 1)) {
SDL_free(_this->displays[index].driverdata);
SDL_memmove(&_this->displays[index], &_this->displays[index + 1], (_this->num_displays - index - 1) * sizeof(_this->displays[index]));
}
--_this->num_displays;
}
int SDL_GetNumVideoDisplays(void)
{
if (_this == NULL) {
SDL_UninitializedVideo();
return 0;
}
return _this->num_displays;
}
int SDL_GetIndexOfDisplay(SDL_VideoDisplay *display)
{
int displayIndex;
for (displayIndex = 0; displayIndex < _this->num_displays; ++displayIndex) {
if (display == &_this->displays[displayIndex]) {
return displayIndex;
}
}
/* Couldn't find the display, just use index 0 */
return 0;
}
void *SDL_GetDisplayDriverData(int displayIndex)
{
CHECK_DISPLAY_INDEX(displayIndex, NULL);
return _this->displays[displayIndex].driverdata;
}
SDL_bool SDL_IsVideoContextExternal(void)
{
return SDL_GetHintBoolean(SDL_HINT_VIDEO_EXTERNAL_CONTEXT, SDL_FALSE);
}
const char *SDL_GetDisplayName(int displayIndex)
{
CHECK_DISPLAY_INDEX(displayIndex, NULL);
return _this->displays[displayIndex].name;
}
int SDL_GetDisplayBounds(int displayIndex, SDL_Rect *rect)
{
SDL_VideoDisplay *display;
CHECK_DISPLAY_INDEX(displayIndex, -1);
if (rect == NULL) {
return SDL_InvalidParamError("rect");
}
display = &_this->displays[displayIndex];
if (_this->GetDisplayBounds) {
if (_this->GetDisplayBounds(_this, display, rect) == 0) {
return 0;
}
}
/* Assume that the displays are left to right */
if (displayIndex == 0) {
rect->x = 0;
rect->y = 0;
} else {
SDL_GetDisplayBounds(displayIndex - 1, rect);
rect->x += rect->w;
}
rect->w = display->current_mode.w;
rect->h = display->current_mode.h;
return 0;
}
static int ParseDisplayUsableBoundsHint(SDL_Rect *rect)
{
const char *hint = SDL_GetHint(SDL_HINT_DISPLAY_USABLE_BOUNDS);
return hint && (SDL_sscanf(hint, "%d,%d,%d,%d", &rect->x, &rect->y, &rect->w, &rect->h) == 4);
}
int SDL_GetDisplayUsableBounds(int displayIndex, SDL_Rect *rect)
{
SDL_VideoDisplay *display;
CHECK_DISPLAY_INDEX(displayIndex, -1);
if (rect == NULL) {
return SDL_InvalidParamError("rect");
}
display = &_this->displays[displayIndex];
if ((displayIndex == 0) && ParseDisplayUsableBoundsHint(rect)) {
return 0;
}
if (_this->GetDisplayUsableBounds) {
if (_this->GetDisplayUsableBounds(_this, display, rect) == 0) {
return 0;
}
}
/* Oh well, just give the entire display bounds. */
return SDL_GetDisplayBounds(displayIndex, rect);
}
int SDL_GetDisplayDPI(int displayIndex, float *ddpi, float *hdpi, float *vdpi)
{
SDL_VideoDisplay *display;
CHECK_DISPLAY_INDEX(displayIndex, -1);
display = &_this->displays[displayIndex];
if (_this->GetDisplayDPI) {
if (_this->GetDisplayDPI(_this, display, ddpi, hdpi, vdpi) == 0) {
return 0;
}
} else {
return SDL_Unsupported();
}
return -1;
}
SDL_DisplayOrientation SDL_GetDisplayOrientation(int displayIndex)
{
SDL_VideoDisplay *display;
CHECK_DISPLAY_INDEX(displayIndex, SDL_ORIENTATION_UNKNOWN);
display = &_this->displays[displayIndex];
return display->orientation;
}
SDL_bool SDL_AddDisplayMode(SDL_VideoDisplay *display, const SDL_DisplayMode *mode)
{
SDL_DisplayMode *modes;
int i, nmodes;
/* Make sure we don't already have the mode in the list */
modes = display->display_modes;
nmodes = display->num_display_modes;
for (i = 0; i < nmodes; ++i) {
if (cmpmodes(mode, &modes[i]) == 0) {
return SDL_FALSE;
}
}
/* Go ahead and add the new mode */
if (nmodes == display->max_display_modes) {
modes =
SDL_realloc(modes,
(display->max_display_modes + 32) * sizeof(*modes));
if (modes == NULL) {
return SDL_FALSE;
}
display->display_modes = modes;
display->max_display_modes += 32;
}
modes[nmodes] = *mode;
display->num_display_modes++;
/* Re-sort video modes */
SDL_qsort(display->display_modes, display->num_display_modes,
sizeof(SDL_DisplayMode), cmpmodes);
return SDL_TRUE;
}
void SDL_SetCurrentDisplayMode(SDL_VideoDisplay *display, const SDL_DisplayMode *mode)
{
SDL_memcpy(&display->current_mode, mode, sizeof(*mode));
}
void SDL_SetDesktopDisplayMode(SDL_VideoDisplay *display, const SDL_DisplayMode *mode)
{
SDL_memcpy(&display->desktop_mode, mode, sizeof(*mode));
}
static int SDL_GetNumDisplayModesForDisplay(SDL_VideoDisplay *display)
{
if (!display->num_display_modes && _this->GetDisplayModes) {
_this->GetDisplayModes(_this, display);
SDL_qsort(display->display_modes, display->num_display_modes,
sizeof(SDL_DisplayMode), cmpmodes);
}
return display->num_display_modes;
}
int SDL_GetNumDisplayModes(int displayIndex)
{
CHECK_DISPLAY_INDEX(displayIndex, -1);
return SDL_GetNumDisplayModesForDisplay(&_this->displays[displayIndex]);
}
void SDL_ResetDisplayModes(int displayIndex)
{
SDL_VideoDisplay *display;
int i;
CHECK_DISPLAY_INDEX(displayIndex, );
display = &_this->displays[displayIndex];
for (i = display->num_display_modes; i--;) {
SDL_free(display->display_modes[i].driverdata);
display->display_modes[i].driverdata = NULL;
}
SDL_free(display->display_modes);
display->display_modes = NULL;
display->num_display_modes = 0;
display->max_display_modes = 0;
}
int SDL_GetDisplayMode(int displayIndex, int index, SDL_DisplayMode *mode)
{
SDL_VideoDisplay *display;
CHECK_DISPLAY_INDEX(displayIndex, -1);
display = &_this->displays[displayIndex];
if (index < 0 || index >= SDL_GetNumDisplayModesForDisplay(display)) {
return SDL_SetError("index must be in the range of 0 - %d", SDL_GetNumDisplayModesForDisplay(display) - 1);
}
if (mode) {
*mode = display->display_modes[index];
}
return 0;
}
int SDL_GetDesktopDisplayMode(int displayIndex, SDL_DisplayMode *mode)
{
SDL_VideoDisplay *display;
CHECK_DISPLAY_INDEX(displayIndex, -1);
display = &_this->displays[displayIndex];
if (mode) {
*mode = display->desktop_mode;
}
return 0;
}
int SDL_GetCurrentDisplayMode(int displayIndex, SDL_DisplayMode *mode)
{
SDL_VideoDisplay *display;
CHECK_DISPLAY_INDEX(displayIndex, -1);
display = &_this->displays[displayIndex];
if (mode) {
*mode = display->current_mode;
}
return 0;
}
static SDL_DisplayMode *SDL_GetClosestDisplayModeForDisplay(SDL_VideoDisplay *display,
const SDL_DisplayMode *mode,
SDL_DisplayMode *closest)
{
Uint32 target_format;
int target_refresh_rate;
int i;
SDL_DisplayMode *current, *match;
if (mode == NULL || closest == NULL) {
SDL_InvalidParamError("mode/closest");
return NULL;
}
/* Default to the desktop format */
if (mode->format) {
target_format = mode->format;
} else {
target_format = display->desktop_mode.format;
}
/* Default to the desktop refresh rate */
if (mode->refresh_rate) {
target_refresh_rate = mode->refresh_rate;
} else {
target_refresh_rate = display->desktop_mode.refresh_rate;
}
match = NULL;
for (i = 0; i < SDL_GetNumDisplayModesForDisplay(display); ++i) {
current = &display->display_modes[i];
if (current->w && (current->w < mode->w)) {
/* Out of sorted modes large enough here */
break;
}
if (current->h && (current->h < mode->h)) {
if (current->w && (current->w == mode->w)) {
/* Out of sorted modes large enough here */
break;
}
/* Wider, but not tall enough, due to a different
aspect ratio. This mode must be skipped, but closer
modes may still follow. */
continue;
}
if (match == NULL || current->w < match->w || current->h < match->h) {
match = current;
continue;
}
if (current->format != match->format) {
/* Sorted highest depth to lowest */
if (current->format == target_format ||
(SDL_BITSPERPIXEL(current->format) >=
SDL_BITSPERPIXEL(target_format) &&
SDL_PIXELTYPE(current->format) ==
SDL_PIXELTYPE(target_format))) {
match = current;
}
continue;
}
if (current->refresh_rate != match->refresh_rate) {
/* Sorted highest refresh to lowest */
if (current->refresh_rate >= target_refresh_rate) {
match = current;
}
}
}
if (match) {
if (match->format) {
closest->format = match->format;
} else {
closest->format = mode->format;
}
if (match->w && match->h) {
closest->w = match->w;
closest->h = match->h;
} else {
closest->w = mode->w;
closest->h = mode->h;
}
if (match->refresh_rate) {
closest->refresh_rate = match->refresh_rate;
} else {
closest->refresh_rate = mode->refresh_rate;
}
closest->driverdata = match->driverdata;
/*
* Pick some reasonable defaults if the app and driver don't
* care
*/
if (!closest->format) {
closest->format = SDL_PIXELFORMAT_RGB888;