| 1 | /* |
| 2 | SDL - Simple DirectMedia Layer |
| 3 | Copyright (C) 1997-2009 Sam Lantinga |
| 4 | Copyright (C) 2001 Hsieh-Fu Tsai |
| 5 | Copyright (C) 2002 Greg Haerr <greg@censoft.com> |
| 6 | |
| 7 | This library is free software; you can redistribute it and/or |
| 8 | modify it under the terms of the GNU Library General Public |
| 9 | License as published by the Free Software Foundation; either |
| 10 | version 2 of the License, or (at your option) any later version. |
| 11 | |
| 12 | This library is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | Library General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU Library General Public |
| 18 | License along with this library; if not, write to the Free |
| 19 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 20 | |
| 21 | Sam Lantinga |
| 22 | slouken@libsdl.org |
| 23 | |
| 24 | Hsieh-Fu Tsai |
| 25 | clare@setabox.com |
| 26 | */ |
| 27 | #include "SDL_config.h" |
| 28 | |
| 29 | #include "SDL_thread.h" |
| 30 | #include "SDL_video.h" |
| 31 | #include "../SDL_pixels_c.h" |
| 32 | #include "../../events/SDL_events_c.h" |
| 33 | |
| 34 | #define MWINCLUDECOLORS |
| 35 | #include "SDL_nxvideo.h" |
| 36 | #include "SDL_nxmodes_c.h" |
| 37 | #include "SDL_nxwm_c.h" |
| 38 | #include "SDL_nxmouse_c.h" |
| 39 | #include "SDL_nximage_c.h" |
| 40 | #include "SDL_nxevents_c.h" |
| 41 | |
| 42 | // Initialization/Query functions |
| 43 | static int NX_VideoInit (_THIS, SDL_PixelFormat * vformat) ; |
| 44 | static SDL_Surface * NX_SetVideoMode (_THIS, SDL_Surface * current, int width, int height, int bpp, Uint32 flags) ; |
| 45 | static int NX_SetColors (_THIS, int firstcolor, int ncolors, SDL_Color * colors) ; |
| 46 | static void NX_VideoQuit (_THIS) ; |
| 47 | static void NX_DestroyWindow (_THIS, SDL_Surface * screen) ; |
| 48 | static int NX_ToggleFullScreen (_THIS, int on) ; |
| 49 | static void NX_UpdateMouse (_THIS) ; |
| 50 | static int NX_SetGammaRamp (_THIS, Uint16 * ramp) ; |
| 51 | static int NX_GetGammaRamp (_THIS, Uint16 * ramp) ; |
| 52 | |
| 53 | // Microwin driver bootstrap functions |
| 54 | static int NX_Available () |
| 55 | { |
| 56 | Dprintf ("enter NX_Available\n") ; |
| 57 | |
| 58 | if (GrOpen () < 0) return 0 ; |
| 59 | GrClose () ; |
| 60 | |
| 61 | Dprintf ("leave NX_Available\n") ; |
| 62 | return 1 ; |
| 63 | } |
| 64 | |
| 65 | static void NX_DeleteDevice (SDL_VideoDevice * device) |
| 66 | { |
| 67 | Dprintf ("enter NX_DeleteDevice\n") ; |
| 68 | |
| 69 | if (device) { |
| 70 | if (device -> hidden) SDL_free (device -> hidden) ; |
| 71 | if (device -> gl_data) SDL_free (device -> gl_data) ; |
| 72 | SDL_free (device) ; |
| 73 | } |
| 74 | |
| 75 | Dprintf ("leave NX_DeleteDevice\n") ; |
| 76 | } |
| 77 | |
| 78 | static SDL_VideoDevice * NX_CreateDevice (int devindex) |
| 79 | { |
| 80 | SDL_VideoDevice * device ; |
| 81 | |
| 82 | Dprintf ("enter NX_CreateDevice\n") ; |
| 83 | |
| 84 | // Initialize all variables that we clean on shutdown |
| 85 | device = (SDL_VideoDevice *) SDL_malloc (sizeof (SDL_VideoDevice)) ; |
| 86 | if (device) { |
| 87 | SDL_memset (device, 0, (sizeof * device)) ; |
| 88 | device -> hidden = (struct SDL_PrivateVideoData *) |
| 89 | SDL_malloc ((sizeof * device -> hidden)) ; |
| 90 | device -> gl_data = NULL ; |
| 91 | } |
| 92 | if ((device == NULL) || (device -> hidden == NULL)) { |
| 93 | SDL_OutOfMemory () ; |
| 94 | NX_DeleteDevice (device) ; |
| 95 | return 0 ; |
| 96 | } |
| 97 | SDL_memset (device -> hidden, 0, (sizeof * device -> hidden)) ; |
| 98 | |
| 99 | // Set the function pointers |
| 100 | device -> VideoInit = NX_VideoInit ; |
| 101 | device -> ListModes = NX_ListModes ; |
| 102 | device -> SetVideoMode = NX_SetVideoMode ; |
| 103 | device -> ToggleFullScreen = NX_ToggleFullScreen ; |
| 104 | device -> UpdateMouse = NX_UpdateMouse ; |
| 105 | device -> CreateYUVOverlay = NULL ; |
| 106 | device -> SetColors = NX_SetColors ; |
| 107 | device -> UpdateRects = NULL ; |
| 108 | device -> VideoQuit = NX_VideoQuit; |
| 109 | device -> AllocHWSurface = NULL ; |
| 110 | device -> CheckHWBlit = NULL ; |
| 111 | device -> FillHWRect = NULL ; |
| 112 | device -> SetHWColorKey = NULL ; |
| 113 | device -> SetHWAlpha = NULL ; |
| 114 | device -> LockHWSurface = NULL ; |
| 115 | device -> UnlockHWSurface = NULL ; |
| 116 | device -> FlipHWSurface = NULL ; |
| 117 | device -> FreeHWSurface = NULL ; |
| 118 | device -> SetGamma = NULL ; |
| 119 | device -> GetGamma = NULL ; |
| 120 | device -> SetGammaRamp = NX_SetGammaRamp ; |
| 121 | device -> GetGammaRamp = NX_GetGammaRamp ; |
| 122 | |
| 123 | #if SDL_VIDEO_OPENGL |
| 124 | device -> GL_LoadLibrary = NULL ; |
| 125 | device -> GL_GetProcAddress = NULL ; |
| 126 | device -> GL_GetAttribute = NULL ; |
| 127 | device -> GL_MakeCurrent = NULL ; |
| 128 | device -> GL_SwapBuffers = NULL ; |
| 129 | #endif |
| 130 | |
| 131 | device -> SetIcon = NULL ; |
| 132 | device -> SetCaption = NX_SetCaption; |
| 133 | device -> IconifyWindow = NULL ; |
| 134 | device -> GrabInput = NULL ; |
| 135 | device -> GetWMInfo = NX_GetWMInfo ; |
| 136 | device -> FreeWMCursor = NX_FreeWMCursor ; |
| 137 | device -> CreateWMCursor = NX_CreateWMCursor ; |
| 138 | device -> ShowWMCursor = NX_ShowWMCursor ; |
| 139 | device -> WarpWMCursor = NX_WarpWMCursor ; |
| 140 | device -> CheckMouseMode = NULL ; |
| 141 | device -> InitOSKeymap = NX_InitOSKeymap ; |
| 142 | device -> PumpEvents = NX_PumpEvents ; |
| 143 | |
| 144 | device -> free = NX_DeleteDevice ; |
| 145 | |
| 146 | Dprintf ("leave NX_CreateDevice\n") ; |
| 147 | return device ; |
| 148 | } |
| 149 | |
| 150 | VideoBootStrap NX_bootstrap = { |
| 151 | "nanox", "nanox", NX_Available, NX_CreateDevice |
| 152 | } ; |
| 153 | |
| 154 | static void create_aux_windows (_THIS) |
| 155 | { |
| 156 | GR_WM_PROPERTIES props ; |
| 157 | |
| 158 | Dprintf ("enter create_aux_windows\n") ; |
| 159 | |
| 160 | // Don't create any extra windows if we are being managed |
| 161 | if (SDL_windowid) { |
| 162 | FSwindow = 0 ; |
| 163 | return ; |
| 164 | } |
| 165 | |
| 166 | if (FSwindow && FSwindow != GR_ROOT_WINDOW_ID) { |
| 167 | GrDestroyWindow (FSwindow) ; |
| 168 | } |
| 169 | |
| 170 | FSwindow = GrNewWindow (GR_ROOT_WINDOW_ID, 0, 0, 1, 1, 0, BLACK, BLACK) ; |
| 171 | props.flags = GR_WM_FLAGS_PROPS ; |
| 172 | props.props = GR_WM_PROPS_NODECORATE ; |
| 173 | GrSetWMProperties (FSwindow, & props) ; |
| 174 | |
| 175 | GrSelectEvents (FSwindow, (GR_EVENT_MASK_EXPOSURE | |
| 176 | GR_EVENT_MASK_BUTTON_DOWN | GR_EVENT_MASK_BUTTON_UP | |
| 177 | GR_EVENT_MASK_FOCUS_IN | GR_EVENT_MASK_FOCUS_OUT | |
| 178 | GR_EVENT_MASK_KEY_DOWN | GR_EVENT_MASK_KEY_UP | |
| 179 | GR_EVENT_MASK_MOUSE_ENTER | GR_EVENT_MASK_MOUSE_EXIT | |
| 180 | GR_EVENT_MASK_MOUSE_MOTION | GR_EVENT_MASK_UPDATE | |
| 181 | GR_EVENT_MASK_CLOSE_REQ)) ; |
| 182 | |
| 183 | Dprintf ("leave create_aux_windows\n") ; |
| 184 | } |
| 185 | |
| 186 | int NX_VideoInit (_THIS, SDL_PixelFormat * vformat) |
| 187 | { |
| 188 | GR_SCREEN_INFO si ; |
| 189 | |
| 190 | Dprintf ("enter NX_VideoInit\n") ; |
| 191 | |
| 192 | if (GrOpen () < 0) { |
| 193 | SDL_SetError ("GrOpen() fail") ; |
| 194 | return -1 ; |
| 195 | } |
| 196 | |
| 197 | // use share memory to speed up |
| 198 | #ifdef NANOX_SHARE_MEMORY |
| 199 | GrReqShmCmds (0xFFFF); |
| 200 | #endif |
| 201 | |
| 202 | SDL_Window = 0 ; |
| 203 | FSwindow = 0 ; |
| 204 | |
| 205 | GammaRamp_R = NULL ; |
| 206 | GammaRamp_G = NULL ; |
| 207 | GammaRamp_B = NULL ; |
| 208 | |
| 209 | GrGetScreenInfo (& si) ; |
| 210 | SDL_Visual.bpp = si.bpp ; |
| 211 | |
| 212 | /* Determine the current screen size */ |
| 213 | this->info.current_w = si.cols ; |
| 214 | this->info.current_h = si.rows ; |
| 215 | |
| 216 | // GetVideoMode |
| 217 | SDL_modelist = (SDL_Rect **) SDL_malloc (sizeof (SDL_Rect *) * 2) ; |
| 218 | if (SDL_modelist) { |
| 219 | SDL_modelist [0] = (SDL_Rect *) SDL_malloc (sizeof(SDL_Rect)) ; |
| 220 | if (SDL_modelist [0]) { |
| 221 | SDL_modelist [0] -> x = 0 ; |
| 222 | SDL_modelist [0] -> y = 0 ; |
| 223 | SDL_modelist [0] -> w = si.cols ; |
| 224 | SDL_modelist [0] -> h = si.rows ; |
| 225 | } |
| 226 | SDL_modelist [1] = NULL ; |
| 227 | } |
| 228 | |
| 229 | pixel_type = si.pixtype; |
| 230 | SDL_Visual.red_mask = si.rmask; |
| 231 | SDL_Visual.green_mask = si.gmask; |
| 232 | SDL_Visual.blue_mask = si.bmask; |
| 233 | |
| 234 | vformat -> BitsPerPixel = SDL_Visual.bpp ; |
| 235 | if (vformat -> BitsPerPixel > 8) { |
| 236 | vformat -> Rmask = SDL_Visual.red_mask ; |
| 237 | vformat -> Gmask = SDL_Visual.green_mask ; |
| 238 | vformat -> Bmask = SDL_Visual.blue_mask ; |
| 239 | } |
| 240 | |
| 241 | // See if we have been passed a window to use |
| 242 | SDL_windowid = getenv ("SDL_WINDOWID") ; |
| 243 | |
| 244 | // Create the fullscreen (and managed windows : no implement) |
| 245 | create_aux_windows (this) ; |
| 246 | |
| 247 | Dprintf ("leave NX_VideoInit\n") ; |
| 248 | return 0 ; |
| 249 | } |
| 250 | |
| 251 | void NX_VideoQuit (_THIS) |
| 252 | { |
| 253 | Dprintf ("enter NX_VideoQuit\n") ; |
| 254 | |
| 255 | // Start shutting down the windows |
| 256 | NX_DestroyImage (this, this -> screen) ; |
| 257 | NX_DestroyWindow (this, this -> screen) ; |
| 258 | if (FSwindow && FSwindow != GR_ROOT_WINDOW_ID) { |
| 259 | GrDestroyWindow (FSwindow) ; |
| 260 | } |
| 261 | NX_FreeVideoModes (this) ; |
| 262 | SDL_free (GammaRamp_R) ; |
| 263 | SDL_free (GammaRamp_G) ; |
| 264 | SDL_free (GammaRamp_B) ; |
| 265 | |
| 266 | #ifdef ENABLE_NANOX_DIRECT_FB |
| 267 | if (Clientfb) |
| 268 | GrCloseClientFramebuffer(); |
| 269 | #endif |
| 270 | GrClose () ; |
| 271 | |
| 272 | Dprintf ("leave NX_VideoQuit\n") ; |
| 273 | } |
| 274 | |
| 275 | static void NX_DestroyWindow (_THIS, SDL_Surface * screen) |
| 276 | { |
| 277 | Dprintf ("enter NX_DestroyWindow\n") ; |
| 278 | |
| 279 | if (! SDL_windowid) { |
| 280 | if (screen && (screen -> flags & SDL_FULLSCREEN)) { |
| 281 | screen -> flags &= ~ SDL_FULLSCREEN ; |
| 282 | NX_LeaveFullScreen (this) ; |
| 283 | } |
| 284 | |
| 285 | // Destroy the output window |
| 286 | if (SDL_Window && SDL_Window != GR_ROOT_WINDOW_ID) { |
| 287 | GrDestroyWindow (SDL_Window) ; |
| 288 | } |
| 289 | } |
| 290 | |
| 291 | // Free the graphics context |
| 292 | if (! SDL_GC) { |
| 293 | GrDestroyGC (SDL_GC) ; |
| 294 | SDL_GC = 0; |
| 295 | } |
| 296 | |
| 297 | Dprintf ("leave NX_DestroyWindow\n") ; |
| 298 | } |
| 299 | |
| 300 | static int NX_CreateWindow (_THIS, SDL_Surface * screen, |
| 301 | int w, int h, int bpp, Uint32 flags) |
| 302 | { |
| 303 | Dprintf ("enter NX_CreateWindow\n") ; |
| 304 | |
| 305 | // If a window is already present, destroy it and start fresh |
| 306 | if (SDL_Window && SDL_Window != GR_ROOT_WINDOW_ID) { |
| 307 | NX_DestroyWindow (this, screen) ; |
| 308 | } |
| 309 | |
| 310 | // See if we have been given a window id |
| 311 | if (SDL_windowid) { |
| 312 | SDL_Window = SDL_strtol (SDL_windowid, NULL, 0) ; |
| 313 | } else { |
| 314 | SDL_Window = 0 ; |
| 315 | } |
| 316 | |
| 317 | if ( ! SDL_ReallocFormat (screen, bpp, SDL_Visual.red_mask, |
| 318 | SDL_Visual.green_mask, SDL_Visual.blue_mask, 0)) |
| 319 | return -1; |
| 320 | |
| 321 | // Create (or use) the nanox display window |
| 322 | if (! SDL_windowid) { |
| 323 | |
| 324 | SDL_Window = GrNewWindow (GR_ROOT_WINDOW_ID, 0, 0, w, h, 0, BLACK, WHITE) ; |
| 325 | |
| 326 | GrSelectEvents (SDL_Window, (GR_EVENT_MASK_EXPOSURE | |
| 327 | GR_EVENT_MASK_BUTTON_DOWN | GR_EVENT_MASK_BUTTON_UP | |
| 328 | GR_EVENT_MASK_FOCUS_IN | GR_EVENT_MASK_FOCUS_OUT | |
| 329 | GR_EVENT_MASK_KEY_DOWN | GR_EVENT_MASK_KEY_UP | |
| 330 | GR_EVENT_MASK_MOUSE_ENTER | GR_EVENT_MASK_MOUSE_EXIT | |
| 331 | GR_EVENT_MASK_MOUSE_MOTION | GR_EVENT_MASK_UPDATE | |
| 332 | GR_EVENT_MASK_CLOSE_REQ)) ; |
| 333 | } |
| 334 | |
| 335 | /* Create the graphics context here, once we have a window */ |
| 336 | SDL_GC = GrNewGC () ; |
| 337 | if (SDL_GC == 0) { |
| 338 | SDL_SetError("Couldn't create graphics context"); |
| 339 | return(-1); |
| 340 | } |
| 341 | |
| 342 | // Map them both and go fullscreen, if requested |
| 343 | if (! SDL_windowid) { |
| 344 | GrMapWindow (SDL_Window) ; |
| 345 | if (flags & SDL_FULLSCREEN) { |
| 346 | screen -> flags |= SDL_FULLSCREEN ; |
| 347 | NX_EnterFullScreen (this) ; |
| 348 | } else { |
| 349 | screen -> flags &= ~ SDL_FULLSCREEN ; |
| 350 | } |
| 351 | } |
| 352 | |
| 353 | #ifdef ENABLE_NANOX_DIRECT_FB |
| 354 | /* attempt allocating the client side framebuffer */ |
| 355 | Clientfb = GrOpenClientFramebuffer(); |
| 356 | /* NULL return will default to using GrArea()*/ |
| 357 | #endif |
| 358 | |
| 359 | Dprintf ("leave NX_CreateWindow\n") ; |
| 360 | return 0 ; |
| 361 | } |
| 362 | |
| 363 | SDL_Surface * NX_SetVideoMode (_THIS, SDL_Surface * current, |
| 364 | int width, int height, int bpp, Uint32 flags) |
| 365 | { |
| 366 | Dprintf ("enter NX_SetVideoMode\n") ; |
| 367 | |
| 368 | // Lock the event thread, in multi-threading environments |
| 369 | SDL_Lock_EventThread () ; |
| 370 | |
| 371 | bpp = SDL_Visual.bpp ; |
| 372 | if (NX_CreateWindow (this, current, width, height, bpp, flags) < 0) { |
| 373 | current = NULL; |
| 374 | goto done; |
| 375 | } |
| 376 | |
| 377 | if (current -> w != width || current -> h != height) { |
| 378 | current -> w = width ; |
| 379 | current -> h = height ; |
| 380 | current -> pitch = SDL_CalculatePitch (current) ; |
| 381 | NX_ResizeImage (this, current, flags) ; |
| 382 | } |
| 383 | |
| 384 | /* Clear these flags and set them only if they are in the new set. */ |
| 385 | current -> flags &= ~(SDL_RESIZABLE|SDL_NOFRAME); |
| 386 | current -> flags |= (flags & (SDL_RESIZABLE | SDL_NOFRAME)) ; |
| 387 | |
| 388 | done: |
| 389 | SDL_Unlock_EventThread () ; |
| 390 | |
| 391 | Dprintf ("leave NX_SetVideoMode\n") ; |
| 392 | |
| 393 | // We're done! |
| 394 | return current ; |
| 395 | } |
| 396 | |
| 397 | // ncolors <= 256 |
| 398 | int NX_SetColors (_THIS, int firstcolor, int ncolors, SDL_Color * colors) |
| 399 | { |
| 400 | int i ; |
| 401 | GR_PALETTE pal ; |
| 402 | |
| 403 | Dprintf ("enter NX_SetColors\n") ; |
| 404 | |
| 405 | if (ncolors > 256) return 0 ; |
| 406 | |
| 407 | pal.count = ncolors ; |
| 408 | for (i = 0; i < ncolors; ++ i) { |
| 409 | pal.palette [i].r = colors [i].r ; |
| 410 | pal.palette [i].g = colors [i].g ; |
| 411 | pal.palette [i].b = colors [i].b ; |
| 412 | } |
| 413 | GrSetSystemPalette (firstcolor, & pal) ; |
| 414 | |
| 415 | Dprintf ("leave NX_SetColors\n") ; |
| 416 | return 1 ; |
| 417 | } |
| 418 | |
| 419 | static int NX_ToggleFullScreen (_THIS, int on) |
| 420 | { |
| 421 | SDL_Rect rect ; |
| 422 | Uint32 event_thread ; |
| 423 | |
| 424 | Dprintf ("enter NX_ToggleFullScreen\n") ; |
| 425 | |
| 426 | // Don't switch if we don't own the window |
| 427 | if (SDL_windowid) return 0 ; |
| 428 | |
| 429 | // Don't lock if we are the event thread |
| 430 | event_thread = SDL_EventThreadID () ; |
| 431 | if (event_thread && (SDL_ThreadID () == event_thread)) { |
| 432 | event_thread = 0 ; |
| 433 | } |
| 434 | if (event_thread) { |
| 435 | SDL_Lock_EventThread() ; |
| 436 | } |
| 437 | |
| 438 | if (on) { |
| 439 | NX_EnterFullScreen (this) ; |
| 440 | } else { |
| 441 | this -> screen -> flags &= ~ SDL_FULLSCREEN ; |
| 442 | NX_LeaveFullScreen (this) ; |
| 443 | } |
| 444 | |
| 445 | rect.x = rect.y = 0 ; |
| 446 | rect.w = this -> screen -> w, rect.h = this -> screen -> h ; |
| 447 | NX_NormalUpdate (this, 1, & rect) ; |
| 448 | |
| 449 | if (event_thread) { |
| 450 | SDL_Unlock_EventThread () ; |
| 451 | } |
| 452 | |
| 453 | Dprintf ("leave NX_ToggleFullScreen\n") ; |
| 454 | return 1 ; |
| 455 | } |
| 456 | |
| 457 | // Update the current mouse state and position |
| 458 | static void NX_UpdateMouse (_THIS) |
| 459 | { |
| 460 | int x, y ; |
| 461 | GR_WINDOW_INFO info ; |
| 462 | GR_SCREEN_INFO si ; |
| 463 | |
| 464 | |
| 465 | Dprintf ("enter NX_UpdateMouse\n") ; |
| 466 | |
| 467 | // Lock the event thread, in multi-threading environments |
| 468 | SDL_Lock_EventThread () ; |
| 469 | |
| 470 | GrGetScreenInfo (& si) ; |
| 471 | GrGetWindowInfo (SDL_Window, & info) ; |
| 472 | x = si.xpos - info.x ; |
| 473 | y = si.ypos - info.y ; |
| 474 | if (x >= 0 && x <= info.width && y >= 0 && y <= info.height) { |
| 475 | SDL_PrivateAppActive (1, SDL_APPMOUSEFOCUS) ; |
| 476 | SDL_PrivateMouseMotion (0, 0, x, y); |
| 477 | } else { |
| 478 | SDL_PrivateAppActive (0, SDL_APPMOUSEFOCUS) ; |
| 479 | } |
| 480 | |
| 481 | SDL_Unlock_EventThread () ; |
| 482 | Dprintf ("leave NX_UpdateMouse\n") ; |
| 483 | } |
| 484 | |
| 485 | static int NX_SetGammaRamp (_THIS, Uint16 * ramp) |
| 486 | { |
| 487 | int i ; |
| 488 | Uint16 * red, * green, * blue ; |
| 489 | |
| 490 | Dprintf ("enter NX_SetGammaRamp\n") ; |
| 491 | |
| 492 | if (SDL_Visual.bpp != 32 && SDL_Visual.bpp != 24) return -1 ; |
| 493 | |
| 494 | if (! GammaRamp_R) GammaRamp_R = (Uint16 *) SDL_malloc (sizeof (Uint16) * CI_SIZE) ; |
| 495 | if (! GammaRamp_G) GammaRamp_G = (Uint16 *) SDL_malloc (sizeof (Uint16) * CI_SIZE) ; |
| 496 | if (! GammaRamp_B) GammaRamp_B = (Uint16 *) SDL_malloc (sizeof (Uint16) * CI_SIZE) ; |
| 497 | if ((! GammaRamp_R) || (! GammaRamp_G) || (! GammaRamp_B)) { |
| 498 | SDL_OutOfMemory () ; |
| 499 | return -1 ; |
| 500 | } |
| 501 | |
| 502 | for (i = 0; i < CI_SIZE; ++ i) |
| 503 | GammaRamp_R [i] = GammaRamp_G [i] = GammaRamp_B [i] = i ; |
| 504 | |
| 505 | red = ramp ; |
| 506 | green = ramp + CI_SIZE ; |
| 507 | blue = green + CI_SIZE ; |
| 508 | |
| 509 | for (i = 0; i < CI_SIZE; ++ i) { |
| 510 | GammaRamp_R [i] = red [i] ; |
| 511 | GammaRamp_G [i] = green [i] ; |
| 512 | GammaRamp_B [i] = blue [i] ; |
| 513 | } |
| 514 | SDL_UpdateRect(this->screen, 0, 0, 0, 0); |
| 515 | |
| 516 | Dprintf ("leave NX_SetGammaRamp\n") ; |
| 517 | return 0 ; |
| 518 | } |
| 519 | |
| 520 | static int NX_GetGammaRamp (_THIS, Uint16 * ramp) |
| 521 | { |
| 522 | int i ; |
| 523 | Uint16 * red, * green, * blue ; |
| 524 | |
| 525 | Dprintf ("enter NX_GetGammaRamp\n") ; |
| 526 | |
| 527 | if (SDL_Visual.bpp != 32 && SDL_Visual.bpp != 24) return -1 ; |
| 528 | red = ramp ; |
| 529 | green = ramp + CI_SIZE ; |
| 530 | blue = green + CI_SIZE ; |
| 531 | if (GammaRamp_R && GammaRamp_G && GammaRamp_B) { |
| 532 | for (i = 0; i < CI_SIZE; ++ i) { |
| 533 | red [i] = GammaRamp_R [i] ; |
| 534 | green [i] = GammaRamp_G [i] ; |
| 535 | blue [i] = GammaRamp_B [i] ; |
| 536 | } |
| 537 | } else { |
| 538 | for (i = 0; i < CI_SIZE; ++ i) |
| 539 | red [i] = green [i] = blue [i] = i ; |
| 540 | } |
| 541 | |
| 542 | Dprintf ("leave NX_GetGammaRamp\n") ; |
| 543 | return 0 ; |
| 544 | } |