SDL_x11video.c
资源名称:NETVIDEO.rar [点击查看]
上传用户:sun1608
上传日期:2007-02-02
资源大小:6116k
文件大小:36k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- /*
- SDL - Simple DirectMedia Layer
- Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public
- License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
- This library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
- You should have received a copy of the GNU Library General Public
- License along with this library; if not, write to the Free
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- Sam Lantinga
- slouken@libsdl.org
- */
- #ifdef SAVE_RCSID
- static char rcsid =
- "@(#) $Id: SDL_x11video.c,v 1.4 2002/04/22 21:38:06 wmay Exp $";
- #endif
- /* X11 based SDL video driver implementation.
- Note: This implementation does not currently need X11 thread locking,
- since the event thread uses a separate X connection and any
- additional locking necessary is handled internally. However,
- if full locking is neccessary, take a look at XInitThreads().
- */
- #include <stdlib.h>
- #include <stdio.h>
- #include <unistd.h>
- #include <string.h>
- #include <sys/ioctl.h>
- #ifdef MTRR_SUPPORT
- #include <asm/mtrr.h>
- #include <sys/fcntl.h>
- #endif
- #ifdef HAVE_ALLOCA_H
- #include <alloca.h>
- #endif
- #ifdef HAVE_ALLOCA
- #define ALLOCA(n) ((void*)alloca(n))
- #define FREEA(p)
- #else
- #define ALLOCA(n) malloc(n)
- #define FREEA(p) free(p)
- #endif
- #include "SDL.h"
- #include "SDL_error.h"
- #include "SDL_timer.h"
- #include "SDL_thread.h"
- #include "SDL_video.h"
- #include "SDL_mouse.h"
- #include "SDL_endian.h"
- #include "SDL_sysvideo.h"
- #include "SDL_pixels_c.h"
- #include "SDL_events_c.h"
- #include "SDL_x11video.h"
- #include "SDL_x11wm_c.h"
- #include "SDL_x11mouse_c.h"
- #include "SDL_x11events_c.h"
- #include "SDL_x11modes_c.h"
- #include "SDL_x11image_c.h"
- #include "SDL_x11yuv_c.h"
- #include "SDL_x11gl_c.h"
- #include "SDL_x11gamma_c.h"
- #include "blank_cursor.h"
- /* Initialization/Query functions */
- static int X11_VideoInit(_THIS, SDL_PixelFormat *vformat);
- static SDL_Surface *X11_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags);
- static int X11_ToggleFullScreen(_THIS, int on);
- static void X11_UpdateMouse(_THIS);
- static int X11_SetColors(_THIS, int firstcolor, int ncolors,
- SDL_Color *colors);
- static int X11_SetGammaRamp(_THIS, Uint16 *ramp);
- static void X11_VideoQuit(_THIS);
- /* X11 driver bootstrap functions */
- static int X11_Available(void)
- {
- Display *display;
- display = XOpenDisplay(NULL);
- if ( display != NULL ) {
- XCloseDisplay(display);
- }
- return(display != NULL);
- }
- static void X11_DeleteDevice(SDL_VideoDevice *device)
- {
- if ( device ) {
- if ( device->hidden ) {
- free(device->hidden);
- }
- if ( device->gl_data ) {
- free(device->gl_data);
- }
- free(device);
- }
- }
- static SDL_VideoDevice *X11_CreateDevice(int devindex)
- {
- SDL_VideoDevice *device;
- /* Initialize all variables that we clean on shutdown */
- device = (SDL_VideoDevice *)malloc(sizeof(SDL_VideoDevice));
- if ( device ) {
- memset(device, 0, (sizeof *device));
- device->hidden = (struct SDL_PrivateVideoData *)
- malloc((sizeof *device->hidden));
- device->gl_data = (struct SDL_PrivateGLData *)
- malloc((sizeof *device->gl_data));
- }
- if ( (device == NULL) || (device->hidden == NULL) ||
- (device->gl_data == NULL) ) {
- SDL_OutOfMemory();
- X11_DeleteDevice(device);
- return(0);
- }
- memset(device->hidden, 0, (sizeof *device->hidden));
- memset(device->gl_data, 0, (sizeof *device->gl_data));
- /* Set the driver flags */
- device->handles_any_size = 1;
- /* Set the function pointers */
- device->VideoInit = X11_VideoInit;
- device->ListModes = X11_ListModes;
- device->SetVideoMode = X11_SetVideoMode;
- device->ToggleFullScreen = X11_ToggleFullScreen;
- device->UpdateMouse = X11_UpdateMouse;
- #ifdef XFREE86_XV
- device->CreateYUVOverlay = X11_CreateYUVOverlay;
- #endif
- device->SetColors = X11_SetColors;
- device->UpdateRects = NULL;
- device->VideoQuit = X11_VideoQuit;
- device->AllocHWSurface = X11_AllocHWSurface;
- device->CheckHWBlit = NULL;
- device->FillHWRect = NULL;
- device->SetHWColorKey = NULL;
- device->SetHWAlpha = NULL;
- device->LockHWSurface = X11_LockHWSurface;
- device->UnlockHWSurface = X11_UnlockHWSurface;
- device->FlipHWSurface = X11_FlipHWSurface;
- device->FreeHWSurface = X11_FreeHWSurface;
- device->SetGamma = X11_SetVidModeGamma;
- device->GetGamma = X11_GetVidModeGamma;
- device->SetGammaRamp = X11_SetGammaRamp;
- device->GetGammaRamp = NULL;
- #ifdef HAVE_OPENGL
- device->GL_LoadLibrary = X11_GL_LoadLibrary;
- device->GL_GetProcAddress = X11_GL_GetProcAddress;
- device->GL_GetAttribute = X11_GL_GetAttribute;
- device->GL_MakeCurrent = X11_GL_MakeCurrent;
- device->GL_SwapBuffers = X11_GL_SwapBuffers;
- #endif
- device->SetCaption = X11_SetCaption;
- device->SetIcon = X11_SetIcon;
- device->IconifyWindow = X11_IconifyWindow;
- device->GrabInput = X11_GrabInput;
- device->GetWMInfo = X11_GetWMInfo;
- device->FreeWMCursor = X11_FreeWMCursor;
- device->CreateWMCursor = X11_CreateWMCursor;
- device->ShowWMCursor = X11_ShowWMCursor;
- device->WarpWMCursor = X11_WarpWMCursor;
- device->CheckMouseMode = X11_CheckMouseMode;
- device->InitOSKeymap = X11_InitOSKeymap;
- device->PumpEvents = X11_PumpEvents;
- device->free = X11_DeleteDevice;
- return device;
- }
- VideoBootStrap X11_bootstrap = {
- "x11", "X Window System",
- X11_Available, X11_CreateDevice
- };
- /* Shared memory information */
- extern int XShmQueryExtension(Display *dpy); /* Not in X11 headers */
- /* Normal X11 error handler routine */
- static int (*X_handler)(Display *, XErrorEvent *) = NULL;
- static int x_errhandler(Display *d, XErrorEvent *e)
- {
- #ifdef XFREE86_VM
- extern int vm_error;
- #endif
- #ifdef XFREE86_DGAMOUSE
- extern int dga_error;
- #endif
- #ifdef XFREE86_VM
- /* VidMode errors are non-fatal. :) */
- /* Are the errors offset by one from the error base?
- e.g. the error base is 143, the code is 148, and the
- actual error is XF86VidModeExtensionDisabled (4) ?
- */
- if ( (vm_error >= 0) &&
- (((e->error_code == BadRequest)&&(e->request_code == vm_error)) ||
- ((e->error_code > vm_error) &&
- (e->error_code <= (vm_error+XF86VidModeNumberErrors)))) ) {
- #ifdef XFREE86_DEBUG
- { char errmsg[1024];
- XGetErrorText(d, e->error_code, errmsg, sizeof(errmsg));
- printf("VidMode error: %sn", errmsg);
- }
- #endif
- return(0);
- }
- #endif /* XFREE86_VM */
- #ifdef XFREE86_DGAMOUSE
- /* DGA errors can be non-fatal. :) */
- if ( (dga_error >= 0) &&
- ((e->error_code > dga_error) &&
- (e->error_code <= (dga_error+XF86DGANumberErrors))) ) {
- #ifdef XFREE86_DEBUG
- { char errmsg[1024];
- XGetErrorText(d, e->error_code, errmsg, sizeof(errmsg));
- printf("DGA error: %sn", errmsg);
- }
- #endif
- return(0);
- }
- #endif /* XFREE86_DGAMOUSE */
- return(X_handler(d,e));
- }
- /* X11 I/O error handler routine */
- static int (*XIO_handler)(Display *) = NULL;
- static int xio_errhandler(Display *d)
- {
- /* Ack! Lost X11 connection! */
- /* We will crash if we try to clean up our display */
- if ( current_video->hidden->Ximage ) {
- SDL_VideoSurface->pixels = NULL;
- }
- current_video->hidden->X11_Display = NULL;
- /* Continue with the standard X11 error handler */
- return(XIO_handler(d));
- }
- /* Create auxiliary (toplevel) windows with the current visual */
- static void create_aux_windows(_THIS)
- {
- XSetWindowAttributes xattr;
- XWMHints *hints;
- XTextProperty titleprop, iconprop;
- int def_vis = (SDL_Visual == DefaultVisual(SDL_Display, SDL_Screen));
- /* Don't create any extra windows if we are being managed */
- if ( SDL_windowid ) {
- FSwindow = 0;
- WMwindow = strtol(SDL_windowid, NULL, 0);
- return;
- }
- if(FSwindow)
- XDestroyWindow(SDL_Display, FSwindow);
- xattr.override_redirect = True;
- xattr.background_pixel = def_vis ? BlackPixel(SDL_Display, SDL_Screen) : 0;
- xattr.border_pixel = 0;
- xattr.colormap = SDL_XColorMap;
- FSwindow = XCreateWindow(SDL_Display, SDL_Root, 0, 0, 32, 32, 0,
- this->hidden->depth, InputOutput, SDL_Visual,
- CWOverrideRedirect | CWBackPixel | CWBorderPixel
- | CWColormap,
- &xattr);
- XSelectInput(SDL_Display, FSwindow, StructureNotifyMask);
- /* Tell KDE to keep the fullscreen window on top */
- {
- XEvent ev;
- long mask;
- memset(&ev, 0, sizeof(ev));
- ev.xclient.type = ClientMessage;
- ev.xclient.window = SDL_Root;
- ev.xclient.message_type = XInternAtom(SDL_Display,
- "KWM_KEEP_ON_TOP", False);
- ev.xclient.format = 32;
- ev.xclient.data.l[0] = FSwindow;
- ev.xclient.data.l[1] = CurrentTime;
- mask = SubstructureRedirectMask;
- XSendEvent(SDL_Display, SDL_Root, False, mask, &ev);
- }
- hints = NULL;
- titleprop.value = iconprop.value = NULL;
- if(WMwindow) {
- /* All window attributes must survive the recreation */
- hints = XGetWMHints(SDL_Display, WMwindow);
- XGetWMName(SDL_Display, WMwindow, &titleprop);
- XGetWMIconName(SDL_Display, WMwindow, &iconprop);
- XDestroyWindow(SDL_Display, WMwindow);
- }
- /* Create the window for windowed management */
- /* (reusing the xattr structure above) */
- WMwindow = XCreateWindow(SDL_Display, SDL_Root, 0, 0, 32, 32, 0,
- this->hidden->depth, InputOutput, SDL_Visual,
- CWBackPixel | CWBorderPixel | CWColormap,
- &xattr);
- /* Set the input hints so we get keyboard input */
- if(!hints) {
- hints = XAllocWMHints();
- hints->input = True;
- hints->flags = InputHint;
- }
- XSetWMHints(SDL_Display, WMwindow, hints);
- XFree(hints);
- if(titleprop.value) {
- XSetWMName(SDL_Display, WMwindow, &titleprop);
- XFree(titleprop.value);
- }
- if(iconprop.value) {
- XSetWMIconName(SDL_Display, WMwindow, &iconprop);
- XFree(iconprop.value);
- }
- XSelectInput(SDL_Display, WMwindow,
- FocusChangeMask | KeyPressMask | KeyReleaseMask
- | PropertyChangeMask | StructureNotifyMask | KeymapStateMask);
- /* Set the class hints so we can get an icon (AfterStep) */
- {
- XClassHint *classhints;
- classhints = XAllocClassHint();
- if(classhints != NULL) {
- classhints->res_name = "SDL_App";
- classhints->res_class = "SDL_App";
- XSetClassHint(SDL_Display, WMwindow, classhints);
- XFree(classhints);
- }
- }
- /* Allow the window to be deleted by the window manager */
- WM_DELETE_WINDOW = XInternAtom(SDL_Display, "WM_DELETE_WINDOW", False);
- XSetWMProtocols(SDL_Display, WMwindow, &WM_DELETE_WINDOW, 1);
- }
- static int X11_VideoInit(_THIS, SDL_PixelFormat *vformat)
- {
- char *display;
- int i;
- /* Open the X11 display */
- display = NULL; /* Get it from DISPLAY environment variable */
- if ( (strncmp(XDisplayName(display), ":", 1) == 0) ||
- (strncmp(XDisplayName(display), "unix:", 5) == 0) ) {
- local_X11 = 1;
- } else {
- local_X11 = 0;
- }
- SDL_Display = XOpenDisplay(display);
- if ( SDL_Display == NULL ) {
- SDL_SetError("Couldn't open X11 display");
- return(-1);
- }
- #ifdef X11_DEBUG
- XSynchronize(SDL_Display, True);
- #endif
- /* Create an alternate X display for graphics updates -- allows us
- to do graphics updates in a separate thread from event handling.
- Thread-safe X11 doesn't seem to exist.
- */
- GFX_Display = XOpenDisplay(display);
- if ( GFX_Display == NULL ) {
- SDL_SetError("Couldn't open X11 display");
- return(-1);
- }
- /* Set the normal X error handler */
- X_handler = XSetErrorHandler(x_errhandler);
- /* Set the error handler if we lose the X display */
- XIO_handler = XSetIOErrorHandler(xio_errhandler);
- /* use default screen (from $DISPLAY) */
- SDL_Screen = DefaultScreen(SDL_Display);
- use_mitshm = 0;
- #ifndef NO_SHARED_MEMORY
- /* Check for MIT shared memory extension */
- if ( local_X11 ) {
- use_mitshm = XShmQueryExtension(SDL_Display);
- }
- #endif /* NO_SHARED_MEMORY */
- /* Get the available video modes */
- if(X11_GetVideoModes(this) < 0)
- return -1;
- /* Determine the default screen depth:
- Use the default visual (or at least one with the same depth) */
- SDL_DisplayColormap = DefaultColormap(SDL_Display, SDL_Screen);
- for(i = 0; i < this->hidden->nvisuals; i++)
- if(this->hidden->visuals[i].depth == DefaultDepth(SDL_Display,
- SDL_Screen))
- break;
- if(i == this->hidden->nvisuals) {
- /* default visual was useless, take the deepest one instead */
- i = 0;
- }
- SDL_Visual = this->hidden->visuals[i].visual;
- if ( SDL_Visual == DefaultVisual(SDL_Display, SDL_Screen) ) {
- SDL_XColorMap = SDL_DisplayColormap;
- } else {
- SDL_XColorMap = XCreateColormap(SDL_Display, SDL_Root,
- SDL_Visual, AllocNone);
- }
- this->hidden->depth = this->hidden->visuals[i].depth;
- vformat->BitsPerPixel = this->hidden->visuals[i].bpp;
- if ( vformat->BitsPerPixel > 8 ) {
- vformat->Rmask = SDL_Visual->red_mask;
- vformat->Gmask = SDL_Visual->green_mask;
- vformat->Bmask = SDL_Visual->blue_mask;
- }
- X11_SaveVidModeGamma(this);
- /* See if we have been passed a window to use */
- SDL_windowid = getenv("SDL_WINDOWID");
- /* Create the fullscreen and managed windows */
- create_aux_windows(this);
- /* Create the blank cursor */
- SDL_BlankCursor = this->CreateWMCursor(this, blank_cdata, blank_cmask,
- BLANK_CWIDTH, BLANK_CHEIGHT,
- BLANK_CHOTX, BLANK_CHOTY);
- /* Fill in some window manager capabilities */
- this->info.wm_available = 1;
- /* We're done! */
- XFlush(SDL_Display);
- return(0);
- }
- static void X11_DestroyWindow(_THIS, SDL_Surface *screen)
- {
- /* Clean up OpenGL */
- if ( screen ) {
- screen->flags &= ~(SDL_OPENGL|SDL_OPENGLBLIT);
- }
- X11_GL_Shutdown(this);
- if ( ! SDL_windowid ) {
- /* Hide the managed window */
- if ( WMwindow ) {
- XUnmapWindow(SDL_Display, WMwindow);
- }
- if ( screen && (screen->flags & SDL_FULLSCREEN) ) {
- screen->flags &= ~SDL_FULLSCREEN;
- X11_LeaveFullScreen(this);
- }
- /* Destroy the output window */
- if ( SDL_Window ) {
- XDestroyWindow(SDL_Display, SDL_Window);
- }
- /* Free the colormap entries */
- if ( SDL_XPixels ) {
- int numcolors;
- unsigned long pixel;
- numcolors = SDL_Visual->map_entries;
- for ( pixel=0; pixel<numcolors; ++pixel ) {
- while ( SDL_XPixels[pixel] > 0 ) {
- XFreeColors(GFX_Display,
- SDL_DisplayColormap,&pixel,1,0);
- --SDL_XPixels[pixel];
- }
- }
- free(SDL_XPixels);
- SDL_XPixels = NULL;
- }
- /* Free the graphics context */
- if ( SDL_GC ) {
- XFreeGC(SDL_Display, SDL_GC);
- SDL_GC = 0;
- }
- }
- }
- static void X11_SetSizeHints(_THIS, int w, int h, Uint32 flags)
- {
- XSizeHints *hints;
- hints = XAllocSizeHints();
- if ( hints ) {
- if ( flags & SDL_RESIZABLE ) {
- hints->min_width = 32;
- hints->min_height = 32;
- hints->max_height = 4096;
- hints->max_width = 4096;
- } else {
- hints->min_width = hints->max_width = w;
- hints->min_height = hints->max_height = h;
- }
- hints->flags = PMaxSize | PMinSize;
- if ( flags & SDL_FULLSCREEN ) {
- hints->x = 0;
- hints->y = 0;
- hints->flags |= USPosition;
- } else
- /* Center it, if desired */
- if ( getenv("SDL_VIDEO_CENTERED") ) {
- int display_w, display_h;
- display_w = DisplayWidth(SDL_Display, SDL_Screen);
- display_h = DisplayHeight(SDL_Display, SDL_Screen);
- hints->x = (display_w - w)/2;
- hints->y = (display_h - h)/2;
- hints->flags |= USPosition;
- XMoveWindow(SDL_Display, WMwindow, hints->x, hints->y);
- /* Flush the resize event so we don't catch it later */
- XSync(SDL_Display, True);
- }
- XSetWMNormalHints(SDL_Display, WMwindow, hints);
- XFree(hints);
- }
- /* Respect the window caption style */
- if ( flags & SDL_NOFRAME ) {
- SDL_bool set;
- Atom WM_HINTS;
- /* We haven't modified the window manager hints yet */
- set = SDL_FALSE;
- /* First try to set MWM hints */
- WM_HINTS = XInternAtom(SDL_Display, "_MOTIF_WM_HINTS", True);
- if ( WM_HINTS != None ) {
- /* Hints used by Motif compliant window managers */
- struct {
- unsigned long flags;
- unsigned long functions;
- unsigned long decorations;
- long input_mode;
- unsigned long status;
- } MWMHints = { (1L << 1), 0, 0, 0, 0 };
- XChangeProperty(SDL_Display, WMwindow,
- WM_HINTS, WM_HINTS, 32,
- PropModeReplace,
- (unsigned char *)&MWMHints,
- sizeof(MWMHints)/sizeof(long));
- set = SDL_TRUE;
- }
- /* Now try to set KWM hints */
- WM_HINTS = XInternAtom(SDL_Display, "KWM_WIN_DECORATION", True);
- if ( WM_HINTS != None ) {
- long KWMHints = 0;
- XChangeProperty(SDL_Display, WMwindow,
- WM_HINTS, WM_HINTS, 32,
- PropModeReplace,
- (unsigned char *)&KWMHints,
- sizeof(KWMHints)/sizeof(long));
- set = SDL_TRUE;
- }
- /* Now try to set GNOME hints */
- WM_HINTS = XInternAtom(SDL_Display, "_WIN_HINTS", True);
- if ( WM_HINTS != None ) {
- long GNOMEHints = 0;
- XChangeProperty(SDL_Display, WMwindow,
- WM_HINTS, WM_HINTS, 32,
- PropModeReplace,
- (unsigned char *)&GNOMEHints,
- sizeof(GNOMEHints)/sizeof(long));
- set = SDL_TRUE;
- }
- /* Finally set the transient hints if necessary */
- if ( ! set ) {
- XSetTransientForHint(SDL_Display, WMwindow, SDL_Root);
- }
- } else {
- SDL_bool set;
- Atom WM_HINTS;
- /* We haven't modified the window manager hints yet */
- set = SDL_FALSE;
- /* First try to unset MWM hints */
- WM_HINTS = XInternAtom(SDL_Display, "_MOTIF_WM_HINTS", True);
- if ( WM_HINTS != None ) {
- XDeleteProperty(SDL_Display, WMwindow, WM_HINTS);
- set = SDL_TRUE;
- }
- /* Now try to unset KWM hints */
- WM_HINTS = XInternAtom(SDL_Display, "KWM_WIN_DECORATION", True);
- if ( WM_HINTS != None ) {
- XDeleteProperty(SDL_Display, WMwindow, WM_HINTS);
- set = SDL_TRUE;
- }
- /* Now try to unset GNOME hints */
- WM_HINTS = XInternAtom(SDL_Display, "_WIN_HINTS", True);
- if ( WM_HINTS != None ) {
- XDeleteProperty(SDL_Display, WMwindow, WM_HINTS);
- set = SDL_TRUE;
- }
- /* Finally unset the transient hints if necessary */
- if ( ! set ) {
- /* NOTE: Does this work? */
- XSetTransientForHint(SDL_Display, WMwindow, None);
- }
- }
- }
- static int X11_CreateWindow(_THIS, SDL_Surface *screen,
- int w, int h, int bpp, Uint32 flags)
- {
- int i, depth;
- Visual *vis;
- int vis_change;
- /* If a window is already present, destroy it and start fresh */
- if ( SDL_Window ) {
- X11_DestroyWindow(this, screen);
- }
- /* See if we have been given a window id */
- if ( SDL_windowid ) {
- SDL_Window = strtol(SDL_windowid, NULL, 0);
- } else {
- SDL_Window = 0;
- }
- /* find out which visual we are going to use */
- if ( flags & SDL_OPENGL ) {
- XVisualInfo *vi;
- vi = X11_GL_GetVisual(this);
- if( !vi ) {
- return -1;
- }
- vis = vi->visual;
- depth = vi->depth;
- } else if ( SDL_windowid ) {
- XWindowAttributes a;
- XGetWindowAttributes(SDL_Display, SDL_Window, &a);
- vis = a.visual;
- depth = a.depth;
- } else {
- for ( i = 0; i < this->hidden->nvisuals; i++ ) {
- if ( this->hidden->visuals[i].bpp == bpp )
- break;
- }
- if ( i == this->hidden->nvisuals ) {
- SDL_SetError("No matching visual for requested depth");
- return -1; /* should never happen */
- }
- vis = this->hidden->visuals[i].visual;
- depth = this->hidden->visuals[i].depth;
- }
- #ifdef X11_DEBUG
- printf("Choosing %s visual at %d bpp - %d colormap entriesn", vis->class == PseudoColor ? "PseudoColor" : (vis->class == TrueColor ? "TrueColor" : (vis->class == DirectColor ? "DirectColor" : "Unknown")), depth, vis->map_entries);
- #endif
- vis_change = (vis != SDL_Visual);
- SDL_Visual = vis;
- this->hidden->depth = depth;
- /* Allocate the new pixel format for this video mode */
- if ( ! SDL_ReallocFormat(screen, bpp,
- vis->red_mask, vis->green_mask, vis->blue_mask, 0) )
- return -1;
- /* Create the appropriate colormap */
- if ( SDL_XColorMap != SDL_DisplayColormap ) {
- XFreeColormap(SDL_Display, SDL_XColorMap);
- }
- if ( SDL_Visual->class == PseudoColor ) {
- int ncolors;
- /* Allocate the pixel flags */
- ncolors = SDL_Visual->map_entries;
- SDL_XPixels = malloc(ncolors * sizeof(int));
- if(SDL_XPixels == NULL) {
- SDL_OutOfMemory();
- return -1;
- }
- memset(SDL_XPixels, 0, ncolors * sizeof(*SDL_XPixels));
- /* always allocate a private colormap on non-default visuals */
- if ( SDL_Visual != DefaultVisual(SDL_Display, SDL_Screen) ) {
- flags |= SDL_HWPALETTE;
- }
- if ( flags & SDL_HWPALETTE ) {
- screen->flags |= SDL_HWPALETTE;
- SDL_XColorMap = XCreateColormap(SDL_Display, SDL_Root,
- SDL_Visual, AllocAll);
- } else {
- SDL_XColorMap = SDL_DisplayColormap;
- }
- } else if ( SDL_Visual->class == DirectColor ) {
- /* Create a colormap which we can manipulate for gamma */
- SDL_XColorMap = XCreateColormap(SDL_Display, SDL_Root,
- SDL_Visual, AllocAll);
- XSync(SDL_Display, False);
- /* Initialize the colormap to the identity mapping */
- SDL_GetGammaRamp(0, 0, 0);
- this->screen = screen;
- X11_SetGammaRamp(this, this->gamma);
- this->screen = NULL;
- } else {
- /* Create a read-only colormap for our window */
- SDL_XColorMap = XCreateColormap(SDL_Display, SDL_Root,
- SDL_Visual, AllocNone);
- }
- /* Recreate the auxiliary windows, if needed (required for GL) */
- if ( vis_change )
- create_aux_windows(this);
- if(screen->flags & SDL_HWPALETTE) {
- /* Since the full-screen window might have got a nonzero background
- colour (0 is white on some displays), we should reset the
- background to 0 here since that is what the user expects
- with a private colormap */
- XSetWindowBackground(SDL_Display, FSwindow, 0);
- XClearWindow(SDL_Display, FSwindow);
- }
- /* resize the (possibly new) window manager window */
- if( !SDL_windowid ) {
- X11_SetSizeHints(this, w, h, flags);
- current_w = w;
- current_h = h;
- XResizeWindow(SDL_Display, WMwindow, w, h);
- }
- /* Create (or use) the X11 display window */
- if ( !SDL_windowid ) {
- if ( flags & SDL_OPENGL ) {
- if ( X11_GL_CreateWindow(this, w, h) < 0 ) {
- return(-1);
- }
- } else {
- XSetWindowAttributes swa;
- swa.background_pixel = 0;
- swa.border_pixel = 0;
- swa.colormap = SDL_XColorMap;
- SDL_Window = XCreateWindow(SDL_Display, WMwindow,
- 0, 0, w, h, 0, depth,
- InputOutput, SDL_Visual,
- CWBackPixel | CWBorderPixel
- | CWColormap, &swa);
- }
- /* Only manage our input if we own the window */
- XSelectInput(SDL_Display, SDL_Window,
- ( EnterWindowMask | LeaveWindowMask
- | ButtonPressMask | ButtonReleaseMask
- | PointerMotionMask | ExposureMask ));
- }
- /* Create the graphics context here, once we have a window */
- if ( flags & SDL_OPENGL ) {
- if ( X11_GL_CreateContext(this) < 0 ) {
- return(-1);
- } else {
- screen->flags |= SDL_OPENGL;
- }
- } else {
- XGCValues gcv;
- gcv.graphics_exposures = False;
- SDL_GC = XCreateGC(SDL_Display, SDL_Window,
- GCGraphicsExposures, &gcv);
- if ( ! SDL_GC ) {
- SDL_SetError("Couldn't create graphics context");
- return(-1);
- }
- }
- /* Set our colormaps when not setting a GL mode */
- if ( ! (flags & SDL_OPENGL) ) {
- XSetWindowColormap(SDL_Display, SDL_Window, SDL_XColorMap);
- if( !SDL_windowid ) {
- XSetWindowColormap(SDL_Display, FSwindow, SDL_XColorMap);
- XSetWindowColormap(SDL_Display, WMwindow, SDL_XColorMap);
- }
- }
- #if 0 /* This is an experiment - are the graphics faster now? - nope. */
- if ( getenv("SDL_VIDEO_X11_BACKINGSTORE") )
- #endif
- /* Cache the window in the server, when possible */
- {
- Screen *xscreen;
- XSetWindowAttributes a;
- xscreen = ScreenOfDisplay(SDL_Display, SDL_Screen);
- a.backing_store = DoesBackingStore(xscreen);
- if ( a.backing_store != NotUseful ) {
- XChangeWindowAttributes(SDL_Display, SDL_Window,
- CWBackingStore, &a);
- }
- }
- /* Update the internal keyboard state */
- X11_SetKeyboardState(SDL_Display, NULL);
- /* Map them both and go fullscreen, if requested */
- if ( ! SDL_windowid ) {
- XMapWindow(SDL_Display, SDL_Window);
- XMapWindow(SDL_Display, WMwindow);
- X11_WaitMapped(this, WMwindow);
- if ( flags & SDL_FULLSCREEN ) {
- screen->flags |= SDL_FULLSCREEN;
- X11_EnterFullScreen(this);
- } else {
- screen->flags &= ~SDL_FULLSCREEN;
- }
- }
- return(0);
- }
- static int X11_ResizeWindow(_THIS,
- SDL_Surface *screen, int w, int h, Uint32 flags)
- {
- if ( ! SDL_windowid ) {
- /* Resize the window manager window */
- X11_SetSizeHints(this, w, h, flags);
- current_w = w;
- current_h = h;
- XResizeWindow(SDL_Display, WMwindow, w, h);
- /* Resize the fullscreen and display windows */
- if ( flags & SDL_FULLSCREEN ) {
- if ( screen->flags & SDL_FULLSCREEN ) {
- X11_ResizeFullScreen(this);
- } else {
- screen->flags |= SDL_FULLSCREEN;
- X11_EnterFullScreen(this);
- }
- } else {
- if ( screen->flags & SDL_FULLSCREEN ) {
- screen->flags &= ~SDL_FULLSCREEN;
- X11_LeaveFullScreen(this);
- }
- }
- XResizeWindow(SDL_Display, SDL_Window, w, h);
- }
- return(0);
- }
- SDL_Surface *X11_SetVideoMode(_THIS, SDL_Surface *current,
- int width, int height, int bpp, Uint32 flags)
- {
- Uint32 saved_flags;
- /* Lock the event thread, in multi-threading environments */
- SDL_Lock_EventThread();
- /* Check the combination of flags we were passed */
- if ( flags & SDL_FULLSCREEN ) {
- /* Clear fullscreen flag if not supported */
- if ( SDL_windowid ) {
- flags &= ~SDL_FULLSCREEN;
- }
- }
- /* Flush any delayed updates */
- XSync(GFX_Display, False);
- /* Set up the X11 window */
- saved_flags = current->flags;
- if (SDL_Window && (saved_flags&SDL_OPENGL) == (flags&SDL_OPENGL)
- && bpp == current->format->BitsPerPixel) {
- if (X11_ResizeWindow(this, current, width, height, flags) < 0) {
- current = NULL;
- goto done;
- }
- } else {
- if (X11_CreateWindow(this,current,width,height,bpp,flags) < 0) {
- current = NULL;
- goto done;
- }
- }
- /* Set up the new mode framebuffer */
- if ( ((current->w != width) || (current->h != height)) ||
- ((saved_flags&SDL_OPENGL) != (flags&SDL_OPENGL)) ) {
- current->w = width;
- current->h = height;
- current->pitch = SDL_CalculatePitch(current);
- X11_ResizeImage(this, current, flags);
- }
- current->flags |= (flags&(SDL_RESIZABLE|SDL_NOFRAME));
- done:
- /* Release the event thread */
- XSync(SDL_Display, False);
- SDL_Unlock_EventThread();
- /* We're done! */
- return(current);
- }
- static int X11_ToggleFullScreen(_THIS, int on)
- {
- Uint32 event_thread;
- /* Don't switch if we don't own the window */
- if ( SDL_windowid ) {
- return(0);
- }
- /* Don't lock if we are the event thread */
- event_thread = SDL_EventThreadID();
- if ( event_thread && (SDL_ThreadID() == event_thread) ) {
- event_thread = 0;
- }
- if ( event_thread ) {
- SDL_Lock_EventThread();
- }
- if ( on ) {
- this->screen->flags |= SDL_FULLSCREEN;
- X11_EnterFullScreen(this);
- } else {
- this->screen->flags &= ~SDL_FULLSCREEN;
- X11_LeaveFullScreen(this);
- }
- X11_RefreshDisplay(this);
- if ( event_thread ) {
- SDL_Unlock_EventThread();
- }
- SDL_ResetKeyboard();
- return(1);
- }
- /* Update the current mouse state and position */
- static void X11_UpdateMouse(_THIS)
- {
- Window u1; int u2;
- Window current_win;
- int x, y;
- unsigned int mask;
- /* Lock the event thread, in multi-threading environments */
- SDL_Lock_EventThread();
- if ( XQueryPointer(SDL_Display, SDL_Window, &u1, ¤t_win,
- &u2, &u2, &x, &y, &mask) ) {
- if ( (x >= 0) && (x < SDL_VideoSurface->w) &&
- (y >= 0) && (y < SDL_VideoSurface->h) ) {
- SDL_PrivateAppActive(1, SDL_APPMOUSEFOCUS);
- SDL_PrivateMouseMotion(0, 0, x, y);
- } else {
- SDL_PrivateAppActive(0, SDL_APPMOUSEFOCUS);
- }
- }
- SDL_Unlock_EventThread();
- }
- /* simple colour distance metric. Supposed to be better than a plain
- Euclidian distance anyway. */
- #define COLOUR_FACTOR 3
- #define LIGHT_FACTOR 1
- #define COLOUR_DIST(r1, g1, b1, r2, g2, b2)
- (COLOUR_FACTOR * (abs(r1 - r2) + abs(g1 - g2) + abs(b1 - b2))
- + LIGHT_FACTOR * abs(r1 + g1 + b1 - (r2 + g2 + b2)))
- static void allocate_nearest(_THIS, SDL_Color *colors,
- SDL_Color *want, int nwant)
- {
- /*
- * There is no way to know which ones to choose from, so we retrieve
- * the entire colormap and try the nearest possible, until we find one
- * that is shared.
- */
- XColor all[256];
- int i;
- for(i = 0; i < 256; i++)
- all[i].pixel = i;
- /*
- * XQueryColors sets the flags in the XColor struct, so we use
- * that to keep track of which colours are available
- */
- XQueryColors(GFX_Display, SDL_XColorMap, all, 256);
- for(i = 0; i < nwant; i++) {
- XColor *c;
- int j;
- int best = 0;
- int mindist = 0x7fffffff;
- int ri = want[i].r;
- int gi = want[i].g;
- int bi = want[i].b;
- for(j = 0; j < 256; j++) {
- int rj, gj, bj, d2;
- if(!all[j].flags)
- continue; /* unavailable colour cell */
- rj = all[j].red >> 8;
- gj = all[j].green >> 8;
- bj = all[j].blue >> 8;
- d2 = COLOUR_DIST(ri, gi, bi, rj, gj, bj);
- if(d2 < mindist) {
- mindist = d2;
- best = j;
- }
- }
- if(SDL_XPixels[best])
- continue; /* already allocated, waste no more time */
- c = all + best;
- if(XAllocColor(GFX_Display, SDL_XColorMap, c)) {
- /* got it */
- colors[c->pixel].r = c->red >> 8;
- colors[c->pixel].g = c->green >> 8;
- colors[c->pixel].b = c->blue >> 8;
- ++SDL_XPixels[c->pixel];
- } else {
- /*
- * The colour couldn't be allocated, probably being
- * owned as a r/w cell by another client. Flag it as
- * unavailable and try again. The termination of the
- * loop is guaranteed since at least black and white
- * are always there.
- */
- c->flags = 0;
- i--;
- }
- }
- }
- int X11_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors)
- {
- int nrej = 0;
- /* Check to make sure we have a colormap allocated */
- if ( SDL_XPixels == NULL ) {
- return(0);
- }
- if ( (this->screen->flags & SDL_HWPALETTE) == SDL_HWPALETTE ) {
- /* private writable colormap: just set the colours we need */
- XColor *xcmap;
- int i;
- xcmap = ALLOCA(ncolors*sizeof(*xcmap));
- if(xcmap == NULL)
- return 0;
- for ( i=0; i<ncolors; ++i ) {
- xcmap[i].pixel = i + firstcolor;
- xcmap[i].red = (colors[i].r<<8)|colors[i].r;
- xcmap[i].green = (colors[i].g<<8)|colors[i].g;
- xcmap[i].blue = (colors[i].b<<8)|colors[i].b;
- xcmap[i].flags = (DoRed|DoGreen|DoBlue);
- }
- XStoreColors(GFX_Display, SDL_XColorMap, xcmap, ncolors);
- XSync(GFX_Display, False);
- FREEA(xcmap);
- } else {
- /*
- * Shared colormap: We only allocate read-only cells, which
- * increases the likelyhood of colour sharing with other
- * clients. The pixel values will almost certainly be
- * different from the requested ones, so the user has to
- * walk the colormap and see which index got what colour.
- *
- * We can work directly with the logical palette since it
- * has already been set when we get here.
- */
- SDL_Color *want, *reject;
- unsigned long *freelist;
- int i;
- int nfree = 0;
- int nc = this->screen->format->palette->ncolors;
- colors = this->screen->format->palette->colors;
- freelist = ALLOCA(nc * sizeof(*freelist));
- /* make sure multiple allocations of the same cell are freed */
- for(i = 0; i < ncolors; i++) {
- int pixel = firstcolor + i;
- while(SDL_XPixels[pixel]) {
- freelist[nfree++] = pixel;
- --SDL_XPixels[pixel];
- }
- }
- XFreeColors(GFX_Display, SDL_XColorMap, freelist, nfree, 0);
- FREEA(freelist);
- want = ALLOCA(ncolors * sizeof(SDL_Color));
- reject = ALLOCA(ncolors * sizeof(SDL_Color));
- memcpy(want, colors + firstcolor, ncolors * sizeof(SDL_Color));
- /* make sure the user isn't fooled by her own wishes
- (black is safe, always available in the default colormap) */
- memset(colors + firstcolor, 0, ncolors * sizeof(SDL_Color));
- /* now try to allocate the colours */
- for(i = 0; i < ncolors; i++) {
- XColor col;
- col.red = want[i].r << 8;
- col.green = want[i].g << 8;
- col.blue = want[i].b << 8;
- col.flags = DoRed | DoGreen | DoBlue;
- if(XAllocColor(GFX_Display, SDL_XColorMap, &col)) {
- /* We got the colour, or at least the nearest
- the hardware could get. */
- colors[col.pixel].r = col.red >> 8;
- colors[col.pixel].g = col.green >> 8;
- colors[col.pixel].b = col.blue >> 8;
- ++SDL_XPixels[col.pixel];
- } else {
- /*
- * no more free cells, add it to the list
- * of rejected colours
- */
- reject[nrej++] = want[i];
- }
- }
- if(nrej)
- allocate_nearest(this, colors, reject, nrej);
- FREEA(reject);
- FREEA(want);
- }
- return nrej == 0;
- }
- int X11_SetGammaRamp(_THIS, Uint16 *ramp)
- {
- int i, ncolors;
- XColor xcmap[256];
- /* See if actually setting the gamma is supported */
- if ( SDL_Visual->class != DirectColor ) {
- SDL_SetError("Gamma correction not supported on this visual");
- return(-1);
- }
- /* Calculate the appropriate palette for the given gamma ramp */
- ncolors = SDL_Visual->map_entries;
- for ( i=0; i<ncolors; ++i ) {
- Uint8 c = (256 * i / ncolors);
- xcmap[i].pixel = SDL_MapRGB(this->screen->format, c, c, c);
- xcmap[i].red = ramp[0*256+c];
- xcmap[i].green = ramp[1*256+c];
- xcmap[i].blue = ramp[2*256+c];
- xcmap[i].flags = (DoRed|DoGreen|DoBlue);
- }
- XStoreColors(GFX_Display, SDL_XColorMap, xcmap, ncolors);
- XSync(GFX_Display, False);
- return(0);
- }
- /* Note: If we are terminated, this could be called in the middle of
- another SDL video routine -- notably UpdateRects.
- */
- void X11_VideoQuit(_THIS)
- {
- /* Shutdown everything that's still up */
- /* The event thread should be done, so we can touch SDL_Display */
- if ( SDL_Display != NULL ) {
- /* Flush any delayed updates */
- XSync(GFX_Display, False);
- /* Start shutting down the windows */
- X11_DestroyImage(this, this->screen);
- X11_DestroyWindow(this, this->screen);
- X11_FreeVideoModes(this);
- if ( SDL_XColorMap != SDL_DisplayColormap ) {
- XFreeColormap(SDL_Display, SDL_XColorMap);
- }
- if ( SDL_iconcolors ) {
- unsigned long pixel;
- Colormap dcmap = DefaultColormap(SDL_Display,
- SDL_Screen);
- for(pixel = 0; pixel < 256; ++pixel) {
- while(SDL_iconcolors[pixel] > 0) {
- XFreeColors(GFX_Display,
- dcmap, &pixel, 1, 0);
- --SDL_iconcolors[pixel];
- }
- }
- free(SDL_iconcolors);
- SDL_iconcolors = NULL;
- }
- /* Restore gamma settings if they've changed */
- if ( SDL_GetAppState() & SDL_APPACTIVE ) {
- X11_SwapVidModeGamma(this);
- }
- /* Free that blank cursor */
- if ( SDL_BlankCursor != NULL ) {
- this->FreeWMCursor(this, SDL_BlankCursor);
- SDL_BlankCursor = NULL;
- }
- /* Close the X11 graphics connection */
- if ( GFX_Display != NULL ) {
- XCloseDisplay(GFX_Display);
- GFX_Display = NULL;
- }
- /* Close the X11 display connection */
- XCloseDisplay(SDL_Display);
- SDL_Display = NULL;
- /* Reset the X11 error handlers */
- if ( XIO_handler ) {
- XSetIOErrorHandler(XIO_handler);
- }
- if ( X_handler ) {
- XSetErrorHandler(X_handler);
- }
- /* Unload GL library after X11 shuts down */
- X11_GL_UnloadLibrary(this);
- }
- if ( this->screen && (this->screen->flags & SDL_HWSURFACE) ) {
- /* Direct screen access, no memory buffer */
- this->screen->pixels = NULL;
- }
- }