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