handle src buffer underflow corner cases
[sdl_omap.git] / src / video / ps2gs / SDL_gsvideo.c
CommitLineData
e14743d1 1/*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997-2009 Sam Lantinga
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with this library; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18
19 Sam Lantinga
20 slouken@libsdl.org
21*/
22#include "SDL_config.h"
23
24/* Framebuffer console based SDL video driver implementation.
25*/
26
27#include <fcntl.h>
28#include <unistd.h>
29#include <sys/ioctl.h>
30#include <sys/mman.h>
31
32#include "SDL_video.h"
33#include "SDL_mouse.h"
34#include "../SDL_sysvideo.h"
35#include "../SDL_pixels_c.h"
36#include "../../events/SDL_events_c.h"
37#include "../SDL_cursor_c.h"
38#include "SDL_gsvideo.h"
39#include "SDL_gsmouse_c.h"
40#include "SDL_gsevents_c.h"
41#include "SDL_gsyuv_c.h"
42
43
44/* Initialization/Query functions */
45static int GS_VideoInit(_THIS, SDL_PixelFormat *vformat);
46static SDL_Rect **GS_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags);
47static SDL_Surface *GS_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags);
48static int GS_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors);
49static void GS_VideoQuit(_THIS);
50
51/* Hardware surface functions */
52static int GS_AllocHWSurface(_THIS, SDL_Surface *surface);
53static int GS_LockHWSurface(_THIS, SDL_Surface *surface);
54static void GS_UnlockHWSurface(_THIS, SDL_Surface *surface);
55static void GS_FreeHWSurface(_THIS, SDL_Surface *surface);
56
57/* GS driver bootstrap functions */
58
59static int GS_Available(void)
60{
61 int console, memory;
62
63 console = open(PS2_DEV_GS, O_RDWR, 0);
64 if ( console >= 0 ) {
65 close(console);
66 }
67 memory = open(PS2_DEV_MEM, O_RDWR, 0);
68 if ( memory >= 0 ) {
69 close(memory);
70 }
71 return((console >= 0) && (memory >= 0));
72}
73
74static void GS_DeleteDevice(SDL_VideoDevice *device)
75{
76 SDL_free(device->hidden);
77 SDL_free(device);
78}
79
80static SDL_VideoDevice *GS_CreateDevice(int devindex)
81{
82 SDL_VideoDevice *this;
83
84 /* Initialize all variables that we clean on shutdown */
85 this = (SDL_VideoDevice *)SDL_malloc(sizeof(SDL_VideoDevice));
86 if ( this ) {
87 SDL_memset(this, 0, (sizeof *this));
88 this->hidden = (struct SDL_PrivateVideoData *)
89 SDL_malloc((sizeof *this->hidden));
90 }
91 if ( (this == NULL) || (this->hidden == NULL) ) {
92 SDL_OutOfMemory();
93 if ( this ) {
94 SDL_free(this);
95 }
96 return(0);
97 }
98 SDL_memset(this->hidden, 0, (sizeof *this->hidden));
99 mouse_fd = -1;
100 keyboard_fd = -1;
101
102 /* Set the function pointers */
103 this->VideoInit = GS_VideoInit;
104 this->ListModes = GS_ListModes;
105 this->SetVideoMode = GS_SetVideoMode;
106 this->CreateYUVOverlay = GS_CreateYUVOverlay;
107 this->SetColors = GS_SetColors;
108 this->UpdateRects = NULL;
109 this->VideoQuit = GS_VideoQuit;
110 this->AllocHWSurface = GS_AllocHWSurface;
111 this->CheckHWBlit = NULL;
112 this->FillHWRect = NULL;
113 this->SetHWColorKey = NULL;
114 this->SetHWAlpha = NULL;
115 this->LockHWSurface = GS_LockHWSurface;
116 this->UnlockHWSurface = GS_UnlockHWSurface;
117 this->FlipHWSurface = NULL;
118 this->FreeHWSurface = GS_FreeHWSurface;
119 this->SetIcon = NULL;
120 this->SetCaption = NULL;
121 this->GetWMInfo = NULL;
122 this->FreeWMCursor = GS_FreeWMCursor;
123 this->CreateWMCursor = GS_CreateWMCursor;
124 this->ShowWMCursor = GS_ShowWMCursor;
125 this->MoveWMCursor = GS_MoveWMCursor;
126 this->InitOSKeymap = GS_InitOSKeymap;
127 this->PumpEvents = GS_PumpEvents;
128
129 this->free = GS_DeleteDevice;
130
131 return this;
132}
133
134VideoBootStrap PS2GS_bootstrap = {
135 "ps2gs", "PlayStation 2 Graphics Synthesizer",
136 GS_Available, GS_CreateDevice
137};
138
139/* These are the pixel formats for the 32, 24, and 16 bit video modes */
140static struct {
141 int bpp;
142 Uint32 r;
143 Uint32 g;
144 Uint32 b;
145} GS_pixelmasks[] = {
146 { 32, 0x000000FF, /* RGB little-endian */
147 0x0000FF00,
148 0x00FF0000 },
149 { 24, 0x000000FF, /* RGB little-endian */
150 0x0000FF00,
151 0x00FF0000 },
152 { 16, 0x0000001f, /* RGB little-endian */
153 0x000003e0,
154 0x00007c00 },
155};
156/* This is a mapping from SDL bytes-per-pixel to GS pixel format */
157static int GS_formatmap[] = {
158 -1, /* 0 bpp, not a legal value */
159 -1, /* 8 bpp, not supported (yet?) */
160 PS2_GS_PSMCT16, /* 16 bpp */
161 PS2_GS_PSMCT24, /* 24 bpp */
162 PS2_GS_PSMCT32 /* 32 bpp */
163};
164
165static unsigned long long head_tags[] __attribute__((aligned(16))) = {
166 4 | (1LL << 60), /* GIFtag */
167 0x0e, /* A+D */
168 0, /* 2 */
169 PS2_GS_BITBLTBUF,
170 0, /* 4 */
171 PS2_GS_TRXPOS,
172 0, /* 6 */
173 PS2_GS_TRXREG,
174 0, /* 8 */
175 PS2_GS_TRXDIR
176};
177
178#define MAXIMG (32767 * 16)
179#define MAXTAGS 8
180
181static inline int loadimage_nonblock(int fd, struct ps2_image *image, int size,
182 unsigned long long *hm,
183 unsigned long long *im)
184{
185 struct ps2_plist plist;
186 struct ps2_packet packet[1 + MAXTAGS * 2];
187 int isize;
188 int pnum, it, eop;
189 char *data;
190
191 /* initialize the variables */
192 data = (char *)image->ptr;
193 pnum = it = eop = 0;
194 plist.packet = packet;
195
196 /* make BITBLT packet */
197 packet[pnum].ptr = hm;
198 packet[pnum].len = sizeof(head_tags);
199 pnum++;
200 hm[2] = ((unsigned long long)image->fbp << 32) |
201 ((unsigned long long)image->fbw << 48) |
202 ((unsigned long long)image->psm << 56);
203 hm[4] = ((unsigned long long)image->x << 32) |
204 ((unsigned long long)image->y << 48);
205 hm[6] = (unsigned long long)image->w |
206 ((unsigned long long)image->h << 32);
207
208 /* make image mode tags */
209 while (!eop) {
210 isize = size > MAXIMG ? MAXIMG : size;
211 size -= isize;
212 eop = (size == 0);
213
214 packet[pnum].ptr = &im[it];
215 packet[pnum].len = sizeof(unsigned long long) * 2;
216 pnum++;
217 im[it++] = (isize >> 4) | (eop ? (1 << 15) : 0) | (2LL << 58);
218 im[it++] = 0;
219
220 packet[pnum].ptr = (void *)data;
221 packet[pnum].len = isize;
222 pnum++;
223 data += isize;
224 }
225 plist.num = pnum;
226
227 return ioctl(fd, PS2IOC_SENDL, &plist);
228}
229
230static unsigned long long tex_tags[] __attribute__((aligned(16))) = {
231 3 | (1LL << 60), /* GIFtag */
232 0x0e, /* A+D */
233 0, /* 2 */
234 PS2_GS_TEX0_1,
235 (1 << 5) + (1 << 6),
236 PS2_GS_TEX1_1,
237 0,
238 PS2_GS_TEXFLUSH
239};
240static unsigned long long scale_tags[] __attribute__((aligned(16))) = {
241 5 | (1LL << 60), /* GIFtag */
242 0x0e, /* A+D */
243 6 + (1 << 4) + (1 << 8),
244 PS2_GS_PRIM,
245 ((unsigned long long)0 * 16) + (((unsigned long long)0 * 16) << 16),
246 PS2_GS_UV,
247 ((unsigned long long)0 * 16) + (((unsigned long long)0 * 16) << 16),
248 PS2_GS_XYZ2,
249 0, /* 8 */
250 PS2_GS_UV,
251 0, /* 10 */
252 PS2_GS_XYZ2
253};
254
255
256int scaleimage_nonblock(int fd, unsigned long long *tm, unsigned long long *sm)
257{
258 struct ps2_plist plist;
259 struct ps2_packet packet[2];
260
261 /* initialize the variables */
262 plist.num = 2;
263 plist.packet = packet;
264
265 packet[0].ptr = tm;
266 packet[0].len = sizeof(tex_tags);
267 packet[1].ptr = sm;
268 packet[1].len = sizeof(scale_tags);
269
270 return ioctl(fd, PS2IOC_SENDL, &plist);
271}
272
273static int power_of_2(int value)
274{
275 int shift;
276
277 for ( shift = 0; (1<<shift) < value; ++shift ) {
278 /* Keep looking */ ;
279 }
280 return(shift);
281}
282
283static int GS_VideoInit(_THIS, SDL_PixelFormat *vformat)
284{
285 struct ps2_screeninfo vinfo;
286
287 /* Initialize the library */
288 console_fd = open(PS2_DEV_GS, O_RDWR, 0);
289 if ( console_fd < 0 ) {
290 SDL_SetError("Unable to open %s", PS2_DEV_GS);
291 return(-1);
292 }
293 memory_fd = open(PS2_DEV_MEM, O_RDWR, 0);
294 if ( memory_fd < 0 ) {
295 close(console_fd);
296 console_fd = -1;
297 SDL_SetError("Unable to open %s", PS2_DEV_MEM);
298 return(-1);
299 }
300
301 if ( ioctl(console_fd, PS2IOC_GSCREENINFO, &vinfo) < 0 ) {
302 close(memory_fd);
303 close(console_fd);
304 console_fd = -1;
305 SDL_SetError("Couldn't get console pixel format");
306 return(-1);
307 }
308
309 /* Determine the current screen size */
310 this->info.current_w = vinfo.w;
311 this->info.current_h = vinfo.h;
312
313 /* Determine the current screen depth */
314 switch (vinfo.psm) {
315 /* Supported pixel formats */
316 case PS2_GS_PSMCT32:
317 case PS2_GS_PSMCT24:
318 case PS2_GS_PSMCT16:
319 break;
320 default:
321 GS_VideoQuit(this);
322 SDL_SetError("Unknown console pixel format: %d", vinfo.psm);
323 return(-1);
324 }
325 vformat->BitsPerPixel = GS_pixelmasks[vinfo.psm].bpp;
326 vformat->Rmask = GS_pixelmasks[vinfo.psm].r;
327 vformat->Gmask = GS_pixelmasks[vinfo.psm].g;
328 vformat->Bmask = GS_pixelmasks[vinfo.psm].b;
329 saved_vinfo = vinfo;
330
331 /* Enable mouse and keyboard support */
332 if ( GS_OpenKeyboard(this) < 0 ) {
333 GS_VideoQuit(this);
334 SDL_SetError("Unable to open keyboard");
335 return(-1);
336 }
337 if ( GS_OpenMouse(this) < 0 ) {
338 const char *sdl_nomouse;
339
340 sdl_nomouse = SDL_getenv("SDL_NOMOUSE");
341 if ( ! sdl_nomouse ) {
342 GS_VideoQuit(this);
343 SDL_SetError("Unable to open mouse");
344 return(-1);
345 }
346 }
347
348 /* We're done! */
349 return(0);
350}
351
352static SDL_Rect **GS_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags)
353{
354 static SDL_Rect GS_vesa_mode_list[] = {
355 { 0, 0, 1280, 1024 },
356 { 0, 0, 1024, 768 },
357 { 0, 0, 800, 600 },
358 { 0, 0, 640, 480 }
359 };
360 static SDL_Rect *GS_vesa_modes[] = {
361 &GS_vesa_mode_list[0],
362 &GS_vesa_mode_list[1],
363 &GS_vesa_mode_list[2],
364 &GS_vesa_mode_list[3],
365 NULL
366 };
367 static SDL_Rect GS_tvout_stretch;
368 static SDL_Rect GS_tvout_mode;
369 static SDL_Rect *GS_tvout_modes[3];
370 SDL_Rect **modes = NULL;
371
372 switch (format->BitsPerPixel) {
373 case 16:
374 case 24:
375 case 32:
376 if ( saved_vinfo.mode == PS2_GS_VESA ) {
377 modes = GS_vesa_modes;
378 } else {
379 int i, j = 0;
380
381// FIXME - what's wrong with the stretch code at 16 bpp?
382if ( format->BitsPerPixel != 32 ) break;
383 /* Add a mode that we could possibly stretch to */
384 for ( i=0; GS_vesa_modes[i]; ++i ) {
385 if ( (GS_vesa_modes[i]->w == saved_vinfo.w) &&
386 (GS_vesa_modes[i]->h != saved_vinfo.h) ) {
387 GS_tvout_stretch.w=GS_vesa_modes[i]->w;
388 GS_tvout_stretch.h=GS_vesa_modes[i]->h;
389 GS_tvout_modes[j++] = &GS_tvout_stretch;
390 break;
391 }
392 }
393 /* Add the current TV video mode */
394 GS_tvout_mode.w = saved_vinfo.w;
395 GS_tvout_mode.h = saved_vinfo.h;
396 GS_tvout_modes[j++] = &GS_tvout_mode;
397 GS_tvout_modes[j++] = NULL;
398
399 /* Return the created list of modes */
400 modes = GS_tvout_modes;
401 }
402 break;
403 default:
404 break;
405 }
406 return(modes);
407}
408
409/* Various screen update functions available */
410static void GS_DMAFullUpdate(_THIS, int numrects, SDL_Rect *rects);
411
412static SDL_Surface *GS_SetVideoMode(_THIS, SDL_Surface *current,
413 int width, int height, int bpp, Uint32 flags)
414{
415 struct ps2_screeninfo vinfo;
416
417 /* Set the terminal into graphics mode */
418 if ( GS_EnterGraphicsMode(this) < 0 ) {
419 return(NULL);
420 }
421
422 /* Set the video mode and get the final screen format */
423 if ( ioctl(console_fd, PS2IOC_GSCREENINFO, &vinfo) < 0 ) {
424 SDL_SetError("Couldn't get console screen info");
425 return(NULL);
426 }
427 if ( (vinfo.w != width) || (vinfo.h != height) ||
428 (GS_pixelmasks[vinfo.psm].bpp != bpp) ) {
429 /* If we're not in VESA mode, we have to scale resolution */
430 if ( saved_vinfo.mode == PS2_GS_VESA ) {
431 switch (width) {
432 case 640:
433 vinfo.res = PS2_GS_640x480;
434 break;
435 case 800:
436 vinfo.res = PS2_GS_800x600;
437 break;
438 case 1024:
439 vinfo.res = PS2_GS_1024x768;
440 break;
441 case 1280:
442 vinfo.res = PS2_GS_1280x1024;
443 break;
444 default:
445 SDL_SetError("Unsupported resolution: %dx%d\n",
446 width, height);
447 return(NULL);
448 }
449 vinfo.res |= (PS2_GS_75Hz << 8);
450 vinfo.w = width;
451 vinfo.h = height;
452 }
453 vinfo.fbp = 0;
454 vinfo.psm = GS_formatmap[bpp/8];
455 if ( vinfo.psm < 0 ) {
456 SDL_SetError("Unsupported depth: %d bpp\n", bpp);
457 return(NULL);
458 }
459 if ( ioctl(console_fd, PS2IOC_SSCREENINFO, &vinfo) < 0 ) {
460 SDL_SetError("Couldn't set console screen info");
461 return(NULL);
462 }
463
464 /* Unmap the previous DMA buffer */
465 if ( mapped_mem ) {
466 munmap(mapped_mem, mapped_len);
467 mapped_mem = NULL;
468 }
469 }
470 if ( ! SDL_ReallocFormat(current, GS_pixelmasks[vinfo.psm].bpp,
471 GS_pixelmasks[vinfo.psm].r,
472 GS_pixelmasks[vinfo.psm].g,
473 GS_pixelmasks[vinfo.psm].b, 0) ) {
474 return(NULL);
475 }
476
477 /* Set up the new mode framebuffer */
478 current->flags = SDL_FULLSCREEN;
479 current->w = width;
480 current->h = height;
481 current->pitch = SDL_CalculatePitch(current);
482
483 /* Memory map the DMA area for block memory transfer */
484 if ( ! mapped_mem ) {
485 pixels_len = height * current->pitch;
486 mapped_len = pixels_len +
487 /* Screen update DMA command area */
488 sizeof(head_tags) + ((2 * MAXTAGS) * 16);
489 if ( saved_vinfo.mode != PS2_GS_VESA ) {
490 mapped_len += sizeof(tex_tags) + sizeof(scale_tags);
491 }
492 mapped_mem = mmap(0, mapped_len, PROT_READ|PROT_WRITE,
493 MAP_SHARED, memory_fd, 0);
494 if ( mapped_mem == MAP_FAILED ) {
495 SDL_SetError("Unable to map %d bytes for DMA",
496 mapped_len);
497 mapped_mem = NULL;
498 return(NULL);
499 }
500
501 /* Set up the entire screen for DMA transfer */
502 screen_image.ptr = mapped_mem;
503 screen_image.fbp = 0;
504 screen_image.fbw = (vinfo.w + 63) / 64;
505 screen_image.psm = vinfo.psm;
506 screen_image.x = 0;
507 if ( vinfo.h == height ) {
508 screen_image.y = 0;
509 } else {
510 /* Put image offscreen and scale to screen height */
511 screen_image.y = vinfo.h;
512 }
513 screen_image.w = current->w;
514 screen_image.h = current->h;
515
516 /* get screen image data size (qword aligned) */
517 screen_image_size = (screen_image.w * screen_image.h);
518 switch (screen_image.psm) {
519 case PS2_GS_PSMCT32:
520 screen_image_size *= 4;
521 break;
522 case PS2_GS_PSMCT24:
523 screen_image_size *= 3;
524 break;
525 case PS2_GS_PSMCT16:
526 screen_image_size *= 2;
527 break;
528 }
529 screen_image_size = (screen_image_size + 15) & ~15;
530
531 /* Set up the memory for screen update DMA commands */
532 head_tags_mem = (unsigned long long *)
533 (mapped_mem + pixels_len);
534 image_tags_mem = (unsigned long long *)
535 ((caddr_t)head_tags_mem + sizeof(head_tags));
536 SDL_memcpy(head_tags_mem, head_tags, sizeof(head_tags));
537 if ( saved_vinfo.mode != PS2_GS_VESA ) {
538 tex_tags_mem = (unsigned long long *)
539 ((caddr_t)image_tags_mem + ((2*MAXTAGS)*16));
540 scale_tags_mem = (unsigned long long *)
541 ((caddr_t)tex_tags_mem + sizeof(tex_tags));
542 SDL_memcpy(tex_tags_mem, tex_tags, sizeof(tex_tags));
543 tex_tags_mem[2] =
544 (vinfo.h * vinfo.w) / 64 +
545 ((unsigned long long)screen_image.fbw << 14) +
546 ((unsigned long long)screen_image.psm << 20) +
547 ((unsigned long long)power_of_2(screen_image.w) << 26) +
548 ((unsigned long long)power_of_2(screen_image.h) << 30) +
549 ((unsigned long long)1 << 34) +
550 ((unsigned long long)1 << 35);
551 SDL_memcpy(scale_tags_mem, scale_tags, sizeof(scale_tags));
552 scale_tags_mem[8] =
553 ((unsigned long long)screen_image.w * 16) +
554 (((unsigned long long)screen_image.h * 16) << 16);
555 scale_tags_mem[10] =
556 ((unsigned long long)vinfo.w * 16) +
557 (((unsigned long long)vinfo.h * 16) << 16);
558 }
559 }
560 current->pixels = NULL;
561 if ( SDL_getenv("SDL_FULLSCREEN_UPDATE") ) {
562 /* Correct semantics */
563 current->flags |= SDL_ASYNCBLIT;
564 } else {
565 /* We lie here - the screen memory isn't really the visible
566 display memory and still requires an update, but this
567 has the desired effect for most applications.
568 */
569 current->flags |= SDL_HWSURFACE;
570 }
571
572 /* Set the update rectangle function */
573 this->UpdateRects = GS_DMAFullUpdate;
574
575 /* We're done */
576 return(current);
577}
578
579/* We don't support hardware surfaces yet */
580static int GS_AllocHWSurface(_THIS, SDL_Surface *surface)
581{
582 return(-1);
583}
584static void GS_FreeHWSurface(_THIS, SDL_Surface *surface)
585{
586 return;
587}
588static int GS_LockHWSurface(_THIS, SDL_Surface *surface)
589{
590 if ( surface == this->screen ) {
591 /* Since mouse motion affects 'pixels', lock it */
592 SDL_LockCursor();
593
594 /* Make sure any pending DMA has completed */
595 if ( dma_pending ) {
596 ioctl(console_fd, PS2IOC_SENDQCT, 1);
597 dma_pending = 0;
598 }
599
600 /* If the cursor is drawn on the DMA area, remove it */
601 if ( cursor_drawn ) {
602 surface->pixels = mapped_mem + surface->offset;
603 SDL_EraseCursorNoLock(this->screen);
604 cursor_drawn = 0;
605 }
606
607 /* Set the surface pixels to the base of the DMA area */
608 surface->pixels = mapped_mem;
609
610 /* We're finished! */
611 SDL_UnlockCursor();
612 }
613 return(0);
614}
615static void GS_UnlockHWSurface(_THIS, SDL_Surface *surface)
616{
617 if ( surface == this->screen ) {
618 /* Since mouse motion affects 'pixels', lock it */
619 SDL_LockCursor();
620 surface->pixels = NULL;
621 SDL_UnlockCursor();
622 }
623}
624
625static void GS_DMAFullUpdate(_THIS, int numrects, SDL_Rect *rects)
626{
627 /* Lock so we aren't interrupted by a mouse update */
628 SDL_LockCursor();
629
630 /* Make sure any pending DMA has completed */
631 if ( dma_pending ) {
632 ioctl(console_fd, PS2IOC_SENDQCT, 1);
633 dma_pending = 0;
634 }
635
636 /* If the mouse is visible, draw it on the DMA area */
637 if ( (SDL_cursorstate & CURSOR_VISIBLE) && !cursor_drawn ) {
638 this->screen->pixels = mapped_mem + this->screen->offset;
639 SDL_DrawCursorNoLock(this->screen);
640 this->screen->pixels = NULL;
641 cursor_drawn = 1;
642 }
643
644 /* Put the image onto the screen */
645 loadimage_nonblock(console_fd,
646 &screen_image, screen_image_size,
647 head_tags_mem, image_tags_mem);
648 if ( screen_image.y > 0 ) {
649 /* Need to scale offscreen image to TV output */
650 ioctl(console_fd, PS2IOC_SENDQCT, 1);
651 dma_pending = 0;
652 scaleimage_nonblock(console_fd, tex_tags_mem, scale_tags_mem);
653 } else {
654 dma_pending = 1;
655 }
656
657 /* We're finished! */
658 SDL_UnlockCursor();
659}
660
661static int GS_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors)
662{
663 return(0);
664}
665
666static void GS_VideoQuit(_THIS)
667{
668 /* Close console and input file descriptors */
669 if ( console_fd > 0 ) {
670 /* Unmap the video framebuffer */
671 if ( mapped_mem ) {
672 /* Unmap the video framebuffer */
673 munmap(mapped_mem, mapped_len);
674 mapped_mem = NULL;
675 }
676 close(memory_fd);
677
678 /* Restore the original video mode */
679 if ( GS_InGraphicsMode(this) ) {
680 ioctl(console_fd, PS2IOC_SSCREENINFO, &saved_vinfo);
681 }
682
683 /* We're all done with the graphics device */
684 close(console_fd);
685 console_fd = -1;
686 }
687 GS_CloseMouse(this);
688 GS_CloseKeyboard(this);
689}