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comparison src/video/fbcon/SDL_fbvideo.c @ 1780:7a36f01acf71

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Fixed bug #49 Added support for non-blocking VT switching on the framebuffer console.
author Sam Lantinga <slouken@libsdl.org>
date Mon, 08 May 2006 05:33:02 +0000
parents 980d2a0dc2a3
children 49b4b8413734
comparison
equal deleted inserted replaced
1779:67fc81efcfc3 1780:7a36f01acf71
1236 } 1236 }
1237 surface->pixels = NULL; 1237 surface->pixels = NULL;
1238 surface->hwdata = NULL; 1238 surface->hwdata = NULL;
1239 } 1239 }
1240 1240
1241 /* Routine to check to see if the frame buffer virtual terminal */
1242 /* is the current(active) one. If it is not, result will cause */
1243 /* Lock to fail. (would have waited forever, since the fbevent */
1244 /* keyboard handler maintains a lock when switched away from */
1245 /* current) */
1246 static __inline__ int FB_IsFrameBufferActive(_THIS)
1247 {
1248 struct vt_stat vtstate;
1249 if ( (ioctl(keyboard_fd, VT_GETSTATE, &vtstate) < 0) ||
1250 (current_vt != vtstate.v_active) ) {
1251 return 0;
1252 }
1253 return 1;
1254 }
1255
1256
1257 static int FB_LockHWSurface(_THIS, SDL_Surface *surface) 1241 static int FB_LockHWSurface(_THIS, SDL_Surface *surface)
1258 { 1242 {
1259 if ( !FB_IsFrameBufferActive(this) ) { 1243 if ( switched_away ) {
1260 return -1; /* fail locking. */ 1244 return -2; /* no hardware access */
1261 } 1245 }
1262 if ( surface == this->screen ) { 1246 if ( surface == this->screen ) {
1263 SDL_mutexP(hw_lock); 1247 SDL_mutexP(hw_lock);
1264 if ( FB_IsSurfaceBusy(surface) ) { 1248 if ( FB_IsSurfaceBusy(surface) ) {
1265 FB_WaitBusySurfaces(this); 1249 FB_WaitBusySurfaces(this);
1291 return; 1275 return;
1292 } 1276 }
1293 1277
1294 static int FB_FlipHWSurface(_THIS, SDL_Surface *surface) 1278 static int FB_FlipHWSurface(_THIS, SDL_Surface *surface)
1295 { 1279 {
1280 if ( switched_away ) {
1281 return -2; /* no hardware access */
1282 }
1283
1296 /* Wait for vertical retrace and then flip display */ 1284 /* Wait for vertical retrace and then flip display */
1297 cache_vinfo.yoffset = flip_page*surface->h; 1285 cache_vinfo.yoffset = flip_page*surface->h;
1298 if ( FB_IsSurfaceBusy(this->screen) ) { 1286 if ( FB_IsSurfaceBusy(this->screen) ) {
1299 FB_WaitBusySurfaces(this); 1287 FB_WaitBusySurfaces(this);
1300 } 1288 }
1330 int width, height, FBPitch, left, i, j, SRCPitch, phase; 1318 int width, height, FBPitch, left, i, j, SRCPitch, phase;
1331 register Uint32 m; 1319 register Uint32 m;
1332 Uint8 s1, s2, s3, s4; 1320 Uint8 s1, s2, s3, s4;
1333 Uint32 *src, *srcPtr; 1321 Uint32 *src, *srcPtr;
1334 Uint8 *dst, *dstPtr; 1322 Uint8 *dst, *dstPtr;
1323
1324 if ( switched_away ) {
1325 return; /* no hardware access */
1326 }
1335 1327
1336 screen = this->screen; 1328 screen = this->screen;
1337 FBPitch = screen->w >> 3; 1329 FBPitch = screen->w >> 3;
1338 SRCPitch = screen->pitch >> 2; 1330 SRCPitch = screen->pitch >> 2;
1339 1331