Mercurial > sdl-ios-xcode
annotate src/video/ggi/SDL_ggivideo.c @ 17:4f22a992f5e9
Fixed crash in GGI detection
| author | Sam Lantinga <slouken@lokigames.com> |
|---|---|
| date | Thu, 10 May 2001 18:10:19 +0000 |
| parents | 74212992fb08 |
| children | e8157fcb3114 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
| 3 Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga | |
| 4 | |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 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 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
| 20 slouken@devolution.com | |
| 21 */ | |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 /* GGI-based SDL video driver implementation. | |
| 29 */ | |
| 30 | |
| 31 #include <stdlib.h> | |
| 32 #include <stdio.h> | |
| 33 #include <fcntl.h> | |
| 34 #include <unistd.h> | |
| 35 #include <sys/mman.h> | |
| 36 | |
| 37 #include <ggi/ggi.h> | |
| 38 #include <ggi/gii.h> | |
| 39 | |
| 40 #include "SDL.h" | |
| 41 #include "SDL_error.h" | |
| 42 #include "SDL_video.h" | |
| 43 #include "SDL_mouse.h" | |
| 44 #include "SDL_sysvideo.h" | |
| 45 #include "SDL_pixels_c.h" | |
| 46 #include "SDL_events_c.h" | |
| 47 #include "SDL_ggivideo.h" | |
| 48 #include "SDL_ggimouse_c.h" | |
| 49 #include "SDL_ggievents_c.h" | |
| 50 | |
| 51 | |
| 52 struct private_hwdata | |
| 53 { | |
| 54 ggi_visual_t vis; | |
| 55 }; | |
| 56 | |
| 57 ggi_visual_t VIS; | |
| 58 | |
| 59 /* Initialization/Query functions */ | |
| 60 static int GGI_VideoInit(_THIS, SDL_PixelFormat *vformat); | |
| 61 static SDL_Rect **GGI_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags); | |
| 62 static SDL_Surface *GGI_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags); | |
| 63 static int GGI_SetColors(_THIS, int firstcolor, int ncolors, | |
| 64 SDL_Color *colors); | |
| 65 static void GGI_VideoQuit(_THIS); | |
| 66 | |
| 67 /* Hardware surface functions */ | |
| 68 static int GGI_AllocHWSurface(_THIS, SDL_Surface *surface); | |
| 69 static int GGI_LockHWSurface(_THIS, SDL_Surface *surface); | |
| 70 static void GGI_UnlockHWSurface(_THIS, SDL_Surface *surface); | |
| 71 static void GGI_FreeHWSurface(_THIS, SDL_Surface *surface); | |
| 72 | |
| 73 /* GGI driver bootstrap functions */ | |
| 74 | |
| 75 static int GGI_Available(void) | |
| 76 { | |
| 77 ggi_visual_t *vis; | |
|
17
4f22a992f5e9
Fixed crash in GGI detection
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
78 |
|
4f22a992f5e9
Fixed crash in GGI detection
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
79 vis = NULL; |
|
4f22a992f5e9
Fixed crash in GGI detection
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
80 if (ggiInit() == 0) { |
|
4f22a992f5e9
Fixed crash in GGI detection
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
81 vis = ggiOpen(NULL); |
|
4f22a992f5e9
Fixed crash in GGI detection
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
82 if (vis != NULL) { |
|
4f22a992f5e9
Fixed crash in GGI detection
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
83 ggiClose(vis); |
|
4f22a992f5e9
Fixed crash in GGI detection
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
84 } |
| 0 | 85 } |
| 86 return (vis != NULL); | |
| 87 } | |
| 88 | |
| 89 static void GGI_DeleteDevice(SDL_VideoDevice *device) | |
| 90 { | |
| 91 free(device->hidden); | |
| 92 free(device); | |
| 93 } | |
| 94 | |
| 95 static SDL_VideoDevice *GGI_CreateDevice(int devindex) | |
| 96 { | |
| 97 SDL_VideoDevice *device; | |
| 98 | |
| 99 /* Initialize all variables that we clean on shutdown */ | |
| 100 device = (SDL_VideoDevice *)malloc(sizeof(SDL_VideoDevice)); | |
| 101 if ( device ) { | |
| 102 memset(device, 0, (sizeof *device)); | |
| 103 device->hidden = (struct SDL_PrivateVideoData *) | |
| 104 malloc((sizeof *device->hidden)); | |
| 105 } | |
| 106 if ( (device == NULL) || (device->hidden == NULL) ) { | |
| 107 SDL_OutOfMemory(); | |
| 108 if ( device ) { | |
| 109 free(device); | |
| 110 } | |
| 111 return(0); | |
| 112 } | |
| 113 memset(device->hidden, 0, (sizeof *device->hidden)); | |
| 114 | |
| 115 /* Set the function pointers */ | |
| 116 device->VideoInit = GGI_VideoInit; | |
| 117 device->ListModes = GGI_ListModes; | |
| 118 device->SetVideoMode = GGI_SetVideoMode; | |
| 119 device->SetColors = GGI_SetColors; | |
| 120 device->UpdateRects = NULL; | |
| 121 device->VideoQuit = GGI_VideoQuit; | |
| 122 device->AllocHWSurface = GGI_AllocHWSurface; | |
| 123 device->CheckHWBlit = NULL; | |
| 124 device->FillHWRect = NULL; | |
| 125 device->SetHWColorKey = NULL; | |
| 126 device->SetHWAlpha = NULL; | |
| 127 device->LockHWSurface = GGI_LockHWSurface; | |
| 128 device->UnlockHWSurface = GGI_UnlockHWSurface; | |
| 129 device->FlipHWSurface = NULL; | |
| 130 device->FreeHWSurface = GGI_FreeHWSurface; | |
| 131 device->SetCaption = NULL; | |
| 132 device->SetIcon = NULL; | |
| 133 device->IconifyWindow = NULL; | |
| 134 device->GrabInput = NULL; | |
| 135 device->GetWMInfo = NULL; | |
| 136 device->InitOSKeymap = GGI_InitOSKeymap; | |
| 137 device->PumpEvents = GGI_PumpEvents; | |
| 138 | |
| 139 device->free = GGI_DeleteDevice; | |
| 140 | |
| 141 return device; | |
| 142 } | |
| 143 | |
| 144 VideoBootStrap GGI_bootstrap = { | |
| 145 "ggi", "General Graphics Interface (GGI)", | |
| 146 GGI_Available, GGI_CreateDevice | |
| 147 }; | |
| 148 | |
| 149 | |
| 150 static SDL_Rect video_mode; | |
| 151 static SDL_Rect *SDL_modelist[4] = { NULL, NULL, NULL, NULL }; | |
| 152 | |
| 153 int GGI_VideoInit(_THIS, SDL_PixelFormat *vformat) | |
| 154 { | |
| 155 ggi_mode mode = | |
| 156 { | |
| 157 1, | |
| 158 { GGI_AUTO, GGI_AUTO }, | |
| 159 { GGI_AUTO, GGI_AUTO }, | |
| 160 { 0, 0 }, | |
| 161 GT_AUTO, | |
| 162 { GGI_AUTO, GGI_AUTO } | |
| 163 }; | |
| 164 struct private_hwdata *priv; | |
| 165 ggi_color pal[256], map[256]; | |
| 166 const ggi_directbuffer *db; | |
| 167 int err, num_bufs; | |
| 168 ggi_pixel white, black; | |
| 169 | |
| 170 priv = malloc(sizeof(struct private_hwdata)); | |
| 171 if (priv == NULL) | |
| 172 { | |
| 173 SDL_SetError("Unhandled GGI mode type!\n"); | |
| 174 GGI_VideoQuit(NULL); | |
| 175 } | |
| 176 | |
| 177 if (ggiInit() != 0) | |
| 178 { | |
| 179 SDL_SetError("Unable to initialize GGI!\n"); | |
| 180 GGI_VideoQuit(NULL); | |
| 181 } | |
| 182 | |
| 183 VIS = ggiOpen(NULL); | |
| 184 if (VIS == NULL) | |
| 185 { | |
| 186 SDL_SetError("Unable to open default GGI visual!\n"); | |
| 187 ggiExit(); | |
| 188 GGI_VideoQuit(NULL); | |
| 189 } | |
| 190 | |
| 191 ggiSetFlags(VIS, GGIFLAG_ASYNC); | |
| 192 | |
| 193 /* Validate mode, autodetecting any GGI_AUTO or GT_AUTO fields */ | |
| 194 ggiCheckMode(VIS, &mode); | |
| 195 | |
| 196 /* At this point we should have a valid mode - try to set it */ | |
| 197 err = ggiSetMode(VIS, &mode); | |
| 198 | |
| 199 /* If we couldn't set _any_ modes, something is very wrong */ | |
| 200 if (err) | |
| 201 { | |
| 202 SDL_SetError("Can't set a mode!\n"); | |
| 203 ggiClose(VIS); | |
| 204 ggiExit(); | |
| 205 GGI_VideoQuit(NULL); | |
| 206 } | |
| 207 | |
| 208 /* Set a palette for palletized modes */ | |
| 209 if (GT_SCHEME(mode.graphtype) == GT_PALETTE) | |
| 210 { | |
| 211 ggiSetColorfulPalette(VIS); | |
| 212 ggiGetPalette(VIS, 0, 1 << vformat->BitsPerPixel, pal); | |
| 213 } | |
| 214 | |
| 215 /* Now we try to get the DirectBuffer info, which determines whether | |
| 216 * SDL can access hardware surfaces directly. */ | |
| 217 | |
| 218 num_bufs = ggiDBGetNumBuffers(VIS); | |
| 219 | |
| 220 if (num_bufs > 0) | |
| 221 { | |
| 222 db = ggiDBGetBuffer(VIS, 0); /* Only handle one DB for now */ | |
| 223 | |
| 224 vformat->BitsPerPixel = db->buffer.plb.pixelformat->depth; | |
| 225 | |
| 226 vformat->Rmask = db->buffer.plb.pixelformat->red_mask; | |
| 227 vformat->Gmask = db->buffer.plb.pixelformat->green_mask; | |
| 228 vformat->Bmask = db->buffer.plb.pixelformat->blue_mask; | |
| 229 | |
| 230 /* Fill in our hardware acceleration capabilities */ | |
| 231 | |
| 232 this->info.wm_available = 0; | |
| 233 this->info.hw_available = 1; | |
| 234 this->info.video_mem = db->buffer.plb.stride * mode.virt.y; | |
| 235 } | |
| 236 | |
| 237 video_mode.x = 0; | |
| 238 video_mode.y = 0; | |
| 239 video_mode.w = mode.virt.x; | |
| 240 video_mode.h = mode.virt.y; | |
| 241 SDL_modelist[((vformat->BitsPerPixel + 7) / 8) - 1] = &video_mode; | |
| 242 | |
| 243 /* We're done! */ | |
| 244 return(0); | |
| 245 } | |
| 246 | |
| 247 static SDL_Rect **GGI_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags) | |
| 248 { | |
| 249 return(&SDL_modelist[((format->BitsPerPixel + 7) / 8) - 1]); | |
| 250 } | |
| 251 | |
| 252 /* Various screen update functions available */ | |
| 253 static void GGI_DirectUpdate(_THIS, int numrects, SDL_Rect *rects); | |
| 254 | |
| 255 SDL_Surface *GGI_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags) | |
| 256 { | |
| 257 ggi_mode mode = | |
| 258 { | |
| 259 1, | |
| 260 { GGI_AUTO, GGI_AUTO }, | |
| 261 { GGI_AUTO, GGI_AUTO }, | |
| 262 { 0, 0 }, | |
| 263 GT_AUTO, | |
| 264 { GGI_AUTO, GGI_AUTO } | |
| 265 }; | |
| 266 const ggi_directbuffer *db; | |
| 267 ggi_color pal[256]; | |
| 268 int err; | |
| 269 | |
| 270 fprintf(stderr, "GGI_SetVideoMode()\n"); | |
| 271 | |
| 272 mode.visible.x = mode.virt.x = width; | |
| 273 mode.visible.y = mode.virt.y = height; | |
| 274 | |
| 275 /* Translate requested SDL bit depth into a GGI mode */ | |
| 276 switch (bpp) | |
| 277 { | |
| 278 case 1: mode.graphtype = GT_1BIT; break; | |
| 279 case 2: mode.graphtype = GT_2BIT; break; | |
| 280 case 4: mode.graphtype = GT_4BIT; break; | |
| 281 case 8: mode.graphtype = GT_8BIT; break; | |
| 282 case 15: mode.graphtype = GT_15BIT; break; | |
| 283 case 16: mode.graphtype = GT_16BIT; break; | |
| 284 case 24: mode.graphtype = GT_24BIT; break; | |
| 285 case 32: mode.graphtype = GT_32BIT; break; | |
| 286 default: | |
| 287 SDL_SetError("Unknown SDL bit depth, using GT_AUTO....\n"); | |
| 288 mode.graphtype = GT_AUTO; | |
| 289 } | |
| 290 | |
| 291 /* Validate mode, autodetecting any GGI_AUTO or GT_AUTO fields */ | |
| 292 ggiCheckMode(VIS, &mode); | |
| 293 | |
| 294 /* At this point we should have a valid mode - try to set it */ | |
| 295 err = ggiSetMode(VIS, &mode); | |
| 296 | |
| 297 /* If we couldn't set _any_ modes, something is very wrong */ | |
| 298 if (err) | |
| 299 { | |
| 300 SDL_SetError("Can't set a mode!\n"); | |
| 301 ggiClose(VIS); | |
| 302 ggiExit(); | |
| 303 GGI_VideoQuit(NULL); | |
| 304 } | |
| 305 | |
| 306 /* Set a palette for palletized modes */ | |
| 307 if (GT_SCHEME(mode.graphtype) == GT_PALETTE) | |
| 308 { | |
| 309 ggiSetColorfulPalette(VIS); | |
| 310 ggiGetPalette(VIS, 0, 1 << bpp, pal); | |
| 311 } | |
| 312 | |
| 313 db = ggiDBGetBuffer(VIS, 0); | |
| 314 | |
| 315 /* Set up the new mode framebuffer */ | |
| 316 current->flags = (SDL_FULLSCREEN | SDL_HWSURFACE); | |
| 317 current->w = mode.virt.x; | |
| 318 current->h = mode.virt.y; | |
| 319 current->pitch = db->buffer.plb.stride; | |
| 320 current->pixels = db->read; | |
| 321 | |
| 322 /* Set the blit function */ | |
| 323 this->UpdateRects = GGI_DirectUpdate; | |
| 324 | |
| 325 /* We're done */ | |
| 326 return(current); | |
| 327 } | |
| 328 | |
| 329 static int GGI_AllocHWSurface(_THIS, SDL_Surface *surface) | |
| 330 { | |
| 331 return(-1); | |
| 332 } | |
| 333 static void GGI_FreeHWSurface(_THIS, SDL_Surface *surface) | |
| 334 { | |
| 335 return; | |
| 336 } | |
| 337 static int GGI_LockHWSurface(_THIS, SDL_Surface *surface) | |
| 338 { | |
| 339 return(0); | |
| 340 } | |
| 341 static void GGI_UnlockHWSurface(_THIS, SDL_Surface *surface) | |
| 342 { | |
| 343 return; | |
| 344 } | |
| 345 | |
| 346 static void GGI_DirectUpdate(_THIS, int numrects, SDL_Rect *rects) | |
| 347 { | |
| 348 int i; | |
| 349 | |
| 350 /* ggiFlush(VIS); */ | |
| 351 | |
| 352 for (i = 0; i < numrects; i++) | |
| 353 { | |
| 354 ggiFlushRegion(VIS, rects[i].x, rects[i].y, rects[i].w, rects[i].h); | |
| 355 } | |
| 356 return; | |
| 357 } | |
| 358 | |
| 359 int GGI_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors) | |
| 360 { | |
| 361 int i; | |
| 362 ggi_color pal[256]; | |
| 363 | |
| 364 /* Set up the colormap */ | |
| 365 for (i = 0; i < ncolors; i++) | |
| 366 { | |
| 367 pal[i].r = (colors[i].r << 8) | colors[i].r; | |
| 368 pal[i].g = (colors[i].g << 8) | colors[i].g; | |
| 369 pal[i].b = (colors[i].b << 8) | colors[i].b; | |
| 370 } | |
| 371 | |
| 372 ggiSetPalette(VIS, firstcolor, ncolors, pal); | |
| 373 | |
| 374 return 1; | |
| 375 } | |
| 376 | |
| 377 void GGI_VideoQuit(_THIS) | |
| 378 { | |
| 379 } | |
| 380 void GGI_FinalQuit(void) | |
| 381 { | |
| 382 } |