1 /*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997-2012 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 #include "SDL_ph_modes_c.h"
25
26 static PgVideoModeInfo_t mode_info;
27 static PgVideoModes_t mode_list;
28
29 /* The current list of available video modes */
30 SDL_Rect SDL_modelist[PH_MAX_VIDEOMODES];
31 SDL_Rect* SDL_modearray[PH_MAX_VIDEOMODES];
32
compare_modes_by_res(const void * mode1,const void * mode2)33 static int compare_modes_by_res(const void* mode1, const void* mode2)
34 {
35 PgVideoModeInfo_t mode1_info;
36 PgVideoModeInfo_t mode2_info;
37
38 if (PgGetVideoModeInfo(*(unsigned short*)mode1, &mode1_info) < 0)
39 {
40 return 0;
41 }
42
43 if (PgGetVideoModeInfo(*(unsigned short*)mode2, &mode2_info) < 0)
44 {
45 return 0;
46 }
47
48 if (mode1_info.width == mode2_info.width)
49 {
50 return mode2_info.height - mode1_info.height;
51 }
52 else
53 {
54 return mode2_info.width - mode1_info.width;
55 }
56 }
57
ph_ListModes(_THIS,SDL_PixelFormat * format,Uint32 flags)58 SDL_Rect **ph_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags)
59 {
60 int i = 0;
61 int j = 0;
62 SDL_Rect Amodelist[PH_MAX_VIDEOMODES];
63
64 for (i=0; i<PH_MAX_VIDEOMODES; i++)
65 {
66 SDL_modearray[i]=&SDL_modelist[i];
67 }
68
69 if (PgGetVideoModeList(&mode_list) < 0)
70 {
71 SDL_SetError("ph_ListModes(): PgGetVideoModeList() function failed !\n");
72 return NULL;
73 }
74
75 mode_info.bits_per_pixel = 0;
76
77 for (i=0; i < mode_list.num_modes; i++)
78 {
79 if (PgGetVideoModeInfo(mode_list.modes[i], &mode_info) < 0)
80 {
81 SDL_SetError("ph_ListModes(): PgGetVideoModeInfo() function failed on mode: 0x%X.\n", mode_list.modes[i]);
82 return NULL;
83 }
84 if(mode_info.bits_per_pixel == format->BitsPerPixel)
85 {
86 Amodelist[j].w = mode_info.width;
87 Amodelist[j].h = mode_info.height;
88 Amodelist[j].x = 0;
89 Amodelist[j].y = 0;
90 j++;
91 }
92 }
93
94 /* reorder biggest for smallest, assume width dominates */
95
96 for(i=0; i<j; i++)
97 {
98 SDL_modelist[i].w = Amodelist[j - i - 1].w;
99 SDL_modelist[i].h = Amodelist[j - i - 1].h;
100 SDL_modelist[i].x = Amodelist[j - i - 1].x;
101 SDL_modelist[i].y = Amodelist[j - i - 1].y;
102 }
103 SDL_modearray[j]=NULL;
104
105 return SDL_modearray;
106 }
107
ph_FreeVideoModes(_THIS)108 void ph_FreeVideoModes(_THIS)
109 {
110 return;
111 }
112
113 /* return the mode associated with width, height and bpp */
114 /* if there is no mode then zero is returned */
ph_GetVideoMode(int width,int height,int bpp)115 int ph_GetVideoMode(int width, int height, int bpp)
116 {
117 int i;
118 int modestage=0;
119 int closestmode=0;
120
121 if (PgGetVideoModeList(&mode_list) < 0)
122 {
123 return -1;
124 }
125
126 /* special case for the double-sized 320x200 mode */
127 if ((width==640) && (height==400))
128 {
129 modestage=1;
130 }
131
132 /* search list for exact match */
133 for (i=0; i<mode_list.num_modes; i++)
134 {
135 if (PgGetVideoModeInfo(mode_list.modes[i], &mode_info) < 0)
136 {
137 return 0;
138 }
139
140 if ((mode_info.width == width) && (mode_info.height == height) &&
141 (mode_info.bits_per_pixel == bpp))
142 {
143 return mode_list.modes[i];
144 }
145 else
146 {
147 if ((modestage) && (mode_info.width == width) && (mode_info.height == height+80) &&
148 (mode_info.bits_per_pixel == bpp))
149 {
150 modestage=2;
151 closestmode=mode_list.modes[i];
152 }
153 }
154 }
155
156 /* if we are here, then no 640x400xbpp mode found and we'll emulate it via 640x480xbpp mode */
157 if (modestage==2)
158 {
159 return closestmode;
160 }
161
162 return (i == mode_list.num_modes) ? 0 : mode_list.modes[i];
163 }
164
165 /* return the mode associated with width, height and bpp */
166 /* if requested bpp is not found the mode with closest bpp is returned */
get_mode_any_format(int width,int height,int bpp)167 int get_mode_any_format(int width, int height, int bpp)
168 {
169 int i, closest, delta, min_delta;
170
171 if (PgGetVideoModeList(&mode_list) < 0)
172 {
173 return -1;
174 }
175
176 SDL_qsort(mode_list.modes, mode_list.num_modes, sizeof(unsigned short), compare_modes_by_res);
177
178 for(i=0;i<mode_list.num_modes;i++)
179 {
180 if (PgGetVideoModeInfo(mode_list.modes[i], &mode_info) < 0)
181 {
182 return 0;
183 }
184 if ((mode_info.width == width) && (mode_info.height == height))
185 {
186 break;
187 }
188 }
189
190 if (i<mode_list.num_modes)
191 {
192 /* get closest bpp */
193 closest = i++;
194 if (mode_info.bits_per_pixel == bpp)
195 {
196 return mode_list.modes[closest];
197 }
198
199 min_delta = abs(mode_info.bits_per_pixel - bpp);
200
201 while(1)
202 {
203 if (PgGetVideoModeInfo(mode_list.modes[i], &mode_info) < 0)
204 {
205 return 0;
206 }
207
208 if ((mode_info.width != width) || (mode_info.height != height))
209 {
210 break;
211 }
212 else
213 {
214 if (mode_info.bits_per_pixel == bpp)
215 {
216 closest = i;
217 break;
218 }
219 else
220 {
221 delta = abs(mode_info.bits_per_pixel - bpp);
222 if (delta < min_delta)
223 {
224 closest = i;
225 min_delta = delta;
226 }
227 i++;
228 }
229 }
230 }
231 return mode_list.modes[closest];
232 }
233
234 return 0;
235 }
236
ph_ToggleFullScreen(_THIS,int on)237 int ph_ToggleFullScreen(_THIS, int on)
238 {
239 return -1;
240 }
241
ph_EnterFullScreen(_THIS,SDL_Surface * screen,int fmode)242 int ph_EnterFullScreen(_THIS, SDL_Surface* screen, int fmode)
243 {
244 PgDisplaySettings_t settings;
245 int mode;
246 char* refreshrate;
247 int refreshratenum;
248
249 if (!currently_fullscreen)
250 {
251 /* Get the video mode and set it */
252 if (screen->flags & SDL_ANYFORMAT)
253 {
254 if ((mode = get_mode_any_format(screen->w, screen->h, screen->format->BitsPerPixel)) == 0)
255 {
256 SDL_SetError("ph_EnterFullScreen(): can't find appropriate video mode !\n");
257 return 0;
258 }
259 }
260 else
261 {
262 if ((mode = ph_GetVideoMode(screen->w, screen->h, screen->format->BitsPerPixel)) == 0)
263 {
264 SDL_SetError("ph_EnterFullScreen(): can't find appropriate video mode !\n");
265 return 0;
266 }
267 if (PgGetVideoModeInfo(mode, &mode_info) < 0)
268 {
269 SDL_SetError("ph_EnterFullScreen(): can't get video mode capabilities !\n");
270 return 0;
271 }
272 if (mode_info.height != screen->h)
273 {
274 if ((mode_info.height==480) && (screen->h==400))
275 {
276 videomode_emulatemode=1;
277 }
278 }
279 else
280 {
281 videomode_emulatemode=0;
282 }
283 }
284
285 /* save old video mode caps */
286 PgGetVideoMode(&settings);
287 old_video_mode=settings.mode;
288 old_refresh_rate=settings.refresh;
289
290 /* setup new video mode */
291 settings.mode = mode;
292 settings.refresh = 0;
293 settings.flags = 0;
294
295 refreshrate=SDL_getenv("SDL_PHOTON_FULLSCREEN_REFRESH");
296 if (refreshrate!=NULL)
297 {
298 if (SDL_sscanf(refreshrate, "%d", &refreshratenum)==1)
299 {
300 settings.refresh = refreshratenum;
301 }
302 }
303
304 if (PgSetVideoMode(&settings) < 0)
305 {
306 SDL_SetError("ph_EnterFullScreen(): PgSetVideoMode() call failed !\n");
307 return 0;
308 }
309
310 if (this->screen)
311 {
312 if ((this->screen->flags & SDL_OPENGL)==SDL_OPENGL)
313 {
314 #if !SDL_VIDEO_OPENGL || (_NTO_VERSION < 630)
315 return 0; /* 6.3.0 */
316 #endif
317 }
318 }
319
320 if (fmode==0)
321 {
322 if (OCImage.direct_context==NULL)
323 {
324 OCImage.direct_context=(PdDirectContext_t*)PdCreateDirectContext();
325 if (!OCImage.direct_context)
326 {
327 SDL_SetError("ph_EnterFullScreen(): Can't create direct context !\n");
328 ph_LeaveFullScreen(this);
329 return 0;
330 }
331 }
332 OCImage.oldDC=PdDirectStart(OCImage.direct_context);
333 }
334
335 currently_fullscreen = 1;
336 }
337 PgFlush();
338
339 return 1;
340 }
341
ph_LeaveFullScreen(_THIS)342 int ph_LeaveFullScreen(_THIS)
343 {
344 PgDisplaySettings_t oldmode_settings;
345
346 if (currently_fullscreen)
347 {
348 if ((this->screen) && ((this->screen->flags & SDL_OPENGL)==SDL_OPENGL))
349 {
350 #if !SDL_VIDEO_OPENGL || (_NTO_VERSION < 630)
351 return 0;
352 #endif
353 }
354
355 /* release routines starts here */
356 {
357 if (OCImage.direct_context)
358 {
359 PdDirectStop(OCImage.direct_context);
360 PdReleaseDirectContext(OCImage.direct_context);
361 OCImage.direct_context=NULL;
362 }
363 if (OCImage.oldDC)
364 {
365 PhDCSetCurrent(OCImage.oldDC);
366 OCImage.oldDC=NULL;
367 }
368
369 currently_fullscreen=0;
370
371 /* Restore old video mode */
372 if (old_video_mode != -1)
373 {
374 oldmode_settings.mode = (unsigned short) old_video_mode;
375 oldmode_settings.refresh = (unsigned short) old_refresh_rate;
376 oldmode_settings.flags = 0;
377
378 if (PgSetVideoMode(&oldmode_settings) < 0)
379 {
380 SDL_SetError("Ph_LeaveFullScreen(): PgSetVideoMode() function failed !\n");
381 return 0;
382 }
383 }
384
385 old_video_mode=-1;
386 old_refresh_rate=-1;
387 }
388 }
389 return 1;
390 }
391