Mercurial > sdl-ios-xcode
diff src/video/x11/SDL_x11image.c @ 1662:782fd950bd46 SDL-1.3
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
WARNING: None of the video drivers have been updated for the new API yet! The API is still under design and very fluid.
The code is now run through a consistent indent format:
indent -i4 -nut -nsc -br -ce
The headers are being converted to automatically generate doxygen documentation.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sun, 28 May 2006 13:04:16 +0000 |
parents | e49147870aac |
children | 4da1ee79c9af |
line wrap: on
line diff
--- a/src/video/x11/SDL_x11image.c Sun May 21 17:27:13 2006 +0000 +++ b/src/video/x11/SDL_x11image.c Sun May 28 13:04:16 2006 +0000 @@ -32,246 +32,259 @@ /* Shared memory error handler routine */ static int shm_error; -static int (*X_handler)(Display *, XErrorEvent *) = NULL; -static int shm_errhandler(Display *d, XErrorEvent *e) +static int (*X_handler) (Display *, XErrorEvent *) = NULL; +static int +shm_errhandler (Display * d, XErrorEvent * e) { - if ( e->error_code == BadAccess ) { - shm_error = True; - return(0); - } else - return(X_handler(d,e)); + if (e->error_code == BadAccess) { + shm_error = True; + return (0); + } else + return (X_handler (d, e)); } -static void try_mitshm(_THIS, SDL_Surface *screen) +static void +try_mitshm (_THIS, SDL_Surface * screen) { - /* Dynamic X11 may not have SHM entry points on this box. */ - if ((use_mitshm) && (!SDL_X11_HAVE_SHM)) - use_mitshm = 0; + /* Dynamic X11 may not have SHM entry points on this box. */ + if ((use_mitshm) && (!SDL_X11_HAVE_SHM)) + use_mitshm = 0; - if(!use_mitshm) - return; - shminfo.shmid = shmget(IPC_PRIVATE, screen->h*screen->pitch, - IPC_CREAT | 0777); - if ( shminfo.shmid >= 0 ) { - shminfo.shmaddr = (char *)shmat(shminfo.shmid, 0, 0); - shminfo.readOnly = False; - if ( shminfo.shmaddr != (char *)-1 ) { - shm_error = False; - X_handler = XSetErrorHandler(shm_errhandler); - XShmAttach(SDL_Display, &shminfo); - XSync(SDL_Display, True); - XSetErrorHandler(X_handler); - if ( shm_error ) - shmdt(shminfo.shmaddr); - } else { - shm_error = True; - } - shmctl(shminfo.shmid, IPC_RMID, NULL); - } else { - shm_error = True; - } - if ( shm_error ) - use_mitshm = 0; - if ( use_mitshm ) - screen->pixels = shminfo.shmaddr; + if (!use_mitshm) + return; + shminfo.shmid = shmget (IPC_PRIVATE, screen->h * screen->pitch, + IPC_CREAT | 0777); + if (shminfo.shmid >= 0) { + shminfo.shmaddr = (char *) shmat (shminfo.shmid, 0, 0); + shminfo.readOnly = False; + if (shminfo.shmaddr != (char *) -1) { + shm_error = False; + X_handler = XSetErrorHandler (shm_errhandler); + XShmAttach (SDL_Display, &shminfo); + XSync (SDL_Display, True); + XSetErrorHandler (X_handler); + if (shm_error) + shmdt (shminfo.shmaddr); + } else { + shm_error = True; + } + shmctl (shminfo.shmid, IPC_RMID, NULL); + } else { + shm_error = True; + } + if (shm_error) + use_mitshm = 0; + if (use_mitshm) + screen->pixels = shminfo.shmaddr; } #endif /* ! NO_SHARED_MEMORY */ /* Various screen update functions available */ -static void X11_NormalUpdate(_THIS, int numrects, SDL_Rect *rects); -static void X11_MITSHMUpdate(_THIS, int numrects, SDL_Rect *rects); +static void X11_NormalUpdate (_THIS, int numrects, SDL_Rect * rects); +static void X11_MITSHMUpdate (_THIS, int numrects, SDL_Rect * rects); -int X11_SetupImage(_THIS, SDL_Surface *screen) +int +X11_SetupImage (_THIS, SDL_Surface * screen) { #ifndef NO_SHARED_MEMORY - try_mitshm(this, screen); - if(use_mitshm) { - SDL_Ximage = XShmCreateImage(SDL_Display, SDL_Visual, - this->hidden->depth, ZPixmap, - shminfo.shmaddr, &shminfo, - screen->w, screen->h); - if(!SDL_Ximage) { - XShmDetach(SDL_Display, &shminfo); - XSync(SDL_Display, False); - shmdt(shminfo.shmaddr); - screen->pixels = NULL; - goto error; - } - this->UpdateRects = X11_MITSHMUpdate; - } - if(!use_mitshm) + try_mitshm (this, screen); + if (use_mitshm) { + SDL_Ximage = XShmCreateImage (SDL_Display, SDL_Visual, + this->hidden->depth, ZPixmap, + shminfo.shmaddr, &shminfo, + screen->w, screen->h); + if (!SDL_Ximage) { + XShmDetach (SDL_Display, &shminfo); + XSync (SDL_Display, False); + shmdt (shminfo.shmaddr); + screen->pixels = NULL; + goto error; + } + this->UpdateRects = X11_MITSHMUpdate; + } + if (!use_mitshm) #endif /* not NO_SHARED_MEMORY */ - { - int bpp; - screen->pixels = SDL_malloc(screen->h*screen->pitch); - if ( screen->pixels == NULL ) { - SDL_OutOfMemory(); - return -1; - } - bpp = screen->format->BytesPerPixel; - SDL_Ximage = XCreateImage(SDL_Display, SDL_Visual, - this->hidden->depth, ZPixmap, 0, - (char *)screen->pixels, - screen->w, screen->h, - 32, 0); - if ( SDL_Ximage == NULL ) - goto error; - /* XPutImage will convert byte sex automatically */ - SDL_Ximage->byte_order = (SDL_BYTEORDER == SDL_BIG_ENDIAN) - ? MSBFirst : LSBFirst; - this->UpdateRects = X11_NormalUpdate; - } - screen->pitch = SDL_Ximage->bytes_per_line; - return(0); + { + int bpp; + screen->pixels = SDL_malloc (screen->h * screen->pitch); + if (screen->pixels == NULL) { + SDL_OutOfMemory (); + return -1; + } + bpp = screen->format->BytesPerPixel; + SDL_Ximage = XCreateImage (SDL_Display, SDL_Visual, + this->hidden->depth, ZPixmap, 0, + (char *) screen->pixels, + screen->w, screen->h, 32, 0); + if (SDL_Ximage == NULL) + goto error; + /* XPutImage will convert byte sex automatically */ + SDL_Ximage->byte_order = (SDL_BYTEORDER == SDL_BIG_ENDIAN) + ? MSBFirst : LSBFirst; + this->UpdateRects = X11_NormalUpdate; + } + screen->pitch = SDL_Ximage->bytes_per_line; + return (0); -error: - SDL_SetError("Couldn't create XImage"); - return 1; + error: + SDL_SetError ("Couldn't create XImage"); + return 1; } -void X11_DestroyImage(_THIS, SDL_Surface *screen) +void +X11_DestroyImage (_THIS, SDL_Surface * screen) { - if ( SDL_Ximage ) { - XDestroyImage(SDL_Ximage); + if (SDL_Ximage) { + XDestroyImage (SDL_Ximage); #ifndef NO_SHARED_MEMORY - if ( use_mitshm ) { - XShmDetach(SDL_Display, &shminfo); - XSync(SDL_Display, False); - shmdt(shminfo.shmaddr); - } + if (use_mitshm) { + XShmDetach (SDL_Display, &shminfo); + XSync (SDL_Display, False); + shmdt (shminfo.shmaddr); + } #endif /* ! NO_SHARED_MEMORY */ - SDL_Ximage = NULL; - } - if ( screen ) { - screen->pixels = NULL; - } + SDL_Ximage = NULL; + } + if (screen) { + screen->pixels = NULL; + } } /* Determine the number of CPUs in the system */ -static int num_CPU(void) +static int +num_CPU (void) { - static int num_cpus = 0; + static int num_cpus = 0; - if(!num_cpus) { + if (!num_cpus) { #if defined(__LINUX__) - char line[BUFSIZ]; - FILE *pstat = fopen("/proc/stat", "r"); - if ( pstat ) { - while ( fgets(line, sizeof(line), pstat) ) { - if (SDL_memcmp(line, "cpu", 3) == 0 && line[3] != ' ') { - ++num_cpus; - } - } - fclose(pstat); - } + char line[BUFSIZ]; + FILE *pstat = fopen ("/proc/stat", "r"); + if (pstat) { + while (fgets (line, sizeof (line), pstat)) { + if (SDL_memcmp (line, "cpu", 3) == 0 && line[3] != ' ') { + ++num_cpus; + } + } + fclose (pstat); + } #elif defined(__IRIX__) - num_cpus = sysconf(_SC_NPROC_ONLN); + num_cpus = sysconf (_SC_NPROC_ONLN); #elif defined(_SC_NPROCESSORS_ONLN) - /* number of processors online (SVR4.0MP compliant machines) */ - num_cpus = sysconf(_SC_NPROCESSORS_ONLN); + /* number of processors online (SVR4.0MP compliant machines) */ + num_cpus = sysconf (_SC_NPROCESSORS_ONLN); #elif defined(_SC_NPROCESSORS_CONF) - /* number of processors configured (SVR4.0MP compliant machines) */ - num_cpus = sysconf(_SC_NPROCESSORS_CONF); + /* number of processors configured (SVR4.0MP compliant machines) */ + num_cpus = sysconf (_SC_NPROCESSORS_CONF); #endif - if ( num_cpus <= 0 ) { - num_cpus = 1; - } - } - return num_cpus; + if (num_cpus <= 0) { + num_cpus = 1; + } + } + return num_cpus; } -int X11_ResizeImage(_THIS, SDL_Surface *screen, Uint32 flags) +int +X11_ResizeImage (_THIS, SDL_Surface * screen, Uint32 flags) { - int retval; + int retval; - X11_DestroyImage(this, screen); - if ( flags & SDL_INTERNALOPENGL ) { /* No image when using GL */ - retval = 0; - } else { - retval = X11_SetupImage(this, screen); - /* We support asynchronous blitting on the display */ - if ( flags & SDL_ASYNCBLIT ) { - /* This is actually slower on single-CPU systems, - probably because of CPU contention between the - X server and the application. - Note: Is this still true with XFree86 4.0? - */ - if ( num_CPU() > 1 ) { - screen->flags |= SDL_ASYNCBLIT; - } - } - } - return(retval); + X11_DestroyImage (this, screen); + if (flags & SDL_INTERNALOPENGL) { /* No image when using GL */ + retval = 0; + } else { + retval = X11_SetupImage (this, screen); + /* We support asynchronous blitting on the display */ + if (flags & SDL_ASYNCBLIT) { + /* This is actually slower on single-CPU systems, + probably because of CPU contention between the + X server and the application. + Note: Is this still true with XFree86 4.0? + */ + if (num_CPU () > 1) { + screen->flags |= SDL_ASYNCBLIT; + } + } + } + return (retval); } /* We don't actually allow hardware surfaces other than the main one */ -int X11_AllocHWSurface(_THIS, SDL_Surface *surface) +int +X11_AllocHWSurface (_THIS, SDL_Surface * surface) { - return(-1); + return (-1); } -void X11_FreeHWSurface(_THIS, SDL_Surface *surface) + +void +X11_FreeHWSurface (_THIS, SDL_Surface * surface) { - return; + return; } -int X11_LockHWSurface(_THIS, SDL_Surface *surface) +int +X11_LockHWSurface (_THIS, SDL_Surface * surface) { - if ( (surface == SDL_VideoSurface) && blit_queued ) { - XSync(GFX_Display, False); - blit_queued = 0; - } - return(0); -} -void X11_UnlockHWSurface(_THIS, SDL_Surface *surface) -{ - return; + if ((surface == SDL_VideoSurface) && blit_queued) { + XSync (GFX_Display, False); + blit_queued = 0; + } + return (0); } -int X11_FlipHWSurface(_THIS, SDL_Surface *surface) +void +X11_UnlockHWSurface (_THIS, SDL_Surface * surface) { - return(0); + return; +} + +int +X11_FlipHWSurface (_THIS, SDL_Surface * surface) +{ + return (0); } -static void X11_NormalUpdate(_THIS, int numrects, SDL_Rect *rects) +static void +X11_NormalUpdate (_THIS, int numrects, SDL_Rect * rects) { - int i; - - for (i = 0; i < numrects; ++i) { - if ( rects[i].w == 0 || rects[i].h == 0 ) { /* Clipped? */ - continue; - } - XPutImage(GFX_Display, SDL_Window, SDL_GC, SDL_Ximage, - rects[i].x, rects[i].y, - rects[i].x, rects[i].y, rects[i].w, rects[i].h); - } - if ( SDL_VideoSurface->flags & SDL_ASYNCBLIT ) { - XFlush(GFX_Display); - blit_queued = 1; - } else { - XSync(GFX_Display, False); - } + int i; + + for (i = 0; i < numrects; ++i) { + if (rects[i].w == 0 || rects[i].h == 0) { /* Clipped? */ + continue; + } + XPutImage (GFX_Display, SDL_Window, SDL_GC, SDL_Ximage, + rects[i].x, rects[i].y, + rects[i].x, rects[i].y, rects[i].w, rects[i].h); + } + if (SDL_VideoSurface->flags & SDL_ASYNCBLIT) { + XFlush (GFX_Display); + blit_queued = 1; + } else { + XSync (GFX_Display, False); + } } -static void X11_MITSHMUpdate(_THIS, int numrects, SDL_Rect *rects) +static void +X11_MITSHMUpdate (_THIS, int numrects, SDL_Rect * rects) { #ifndef NO_SHARED_MEMORY - int i; + int i; - for ( i=0; i<numrects; ++i ) { - if ( rects[i].w == 0 || rects[i].h == 0 ) { /* Clipped? */ - continue; - } - XShmPutImage(GFX_Display, SDL_Window, SDL_GC, SDL_Ximage, - rects[i].x, rects[i].y, - rects[i].x, rects[i].y, rects[i].w, rects[i].h, - False); - } - if ( SDL_VideoSurface->flags & SDL_ASYNCBLIT ) { - XFlush(GFX_Display); - blit_queued = 1; - } else { - XSync(GFX_Display, False); - } + for (i = 0; i < numrects; ++i) { + if (rects[i].w == 0 || rects[i].h == 0) { /* Clipped? */ + continue; + } + XShmPutImage (GFX_Display, SDL_Window, SDL_GC, SDL_Ximage, + rects[i].x, rects[i].y, + rects[i].x, rects[i].y, rects[i].w, rects[i].h, False); + } + if (SDL_VideoSurface->flags & SDL_ASYNCBLIT) { + XFlush (GFX_Display); + blit_queued = 1; + } else { + XSync (GFX_Display, False); + } #endif /* ! NO_SHARED_MEMORY */ } @@ -283,36 +296,45 @@ */ static int enable_autorefresh = 1; -void X11_DisableAutoRefresh(_THIS) +void +X11_DisableAutoRefresh (_THIS) { - --enable_autorefresh; + --enable_autorefresh; } -void X11_EnableAutoRefresh(_THIS) +void +X11_EnableAutoRefresh (_THIS) { - ++enable_autorefresh; + ++enable_autorefresh; } -void X11_RefreshDisplay(_THIS) +void +X11_RefreshDisplay (_THIS) { - /* Don't refresh a display that doesn't have an image (like GL) - Instead, post an expose event so the application can refresh. - */ - if ( ! SDL_Ximage || (enable_autorefresh <= 0) ) { - SDL_PrivateExpose(); - return; - } + /* Don't refresh a display that doesn't have an image (like GL) + Instead, post an expose event so the application can refresh. + */ + if (!SDL_Ximage || (enable_autorefresh <= 0)) { + SDL_PrivateExpose (); + return; + } #ifndef NO_SHARED_MEMORY - if ( this->UpdateRects == X11_MITSHMUpdate ) { - XShmPutImage(SDL_Display, SDL_Window, SDL_GC, SDL_Ximage, - 0, 0, 0, 0, this->screen->w, this->screen->h, - False); - } else + if (this->UpdateRects == X11_MITSHMUpdate) { + XShmPutImage (SDL_Display, SDL_Window, SDL_GC, SDL_Ximage, + 0, 0, SDL_CurrentWindow.offset_x, + SDL_CurrentWindow.offset_y, + SDL_CurrentDisplay.current_mode.w, + SDL_CurrentDisplay.current_mode.h, False); + } else #endif /* ! NO_SHARED_MEMORY */ - { - XPutImage(SDL_Display, SDL_Window, SDL_GC, SDL_Ximage, - 0, 0, 0, 0, this->screen->w, this->screen->h); - } - XSync(SDL_Display, False); + { + XPutImage (SDL_Display, SDL_Window, SDL_GC, SDL_Ximage, + 0, 0, SDL_CurrentWindow.offset_x, + SDL_CurrentWindow.offset_y, + SDL_CurrentDisplay.current_mode.w, + SDL_CurrentDisplay.current_mode.h); + } + XSync (SDL_Display, False); } +/* vi: set ts=4 sw=4 expandtab: */