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IABSD.fr/xenocara/xserver/fb/fbscreen.c
matthieu
- xserver/fb/fbscreen.c
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/* * Copyright © 1998 Keith Packard * * Permission to use, copy, modify, distribute, and sell this software and its * documentation for any purpose is hereby granted without fee, provided that * the above copyright notice appear in all copies and that both that * copyright notice and this permission notice appear in supporting * documentation, and that the name of Keith Packard not be used in * advertising or publicity pertaining to distribution of the software without * specific, written prior permission. Keith Packard makes no * representations about the suitability of this software for any purpose. It * is provided "as is" without express or implied warranty. * * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR * PERFORMANCE OF THIS SOFTWARE. */ #ifdef HAVE_DIX_CONFIG_H #include <dix-config.h> #endif #include "fb.h" Bool fbCloseScreen(ScreenPtr pScreen) { int d; DepthPtr depths = pScreen->allowedDepths; fbDestroyGlyphCache(); for (d = 0; d < pScreen->numDepths; d++) free(depths[d].vids); free(depths); free(pScreen->visuals); if (pScreen->devPrivate) FreePixmap((PixmapPtr)pScreen->devPrivate); return TRUE; } Bool fbRealizeFont(ScreenPtr pScreen, FontPtr pFont) { return TRUE; } Bool fbUnrealizeFont(ScreenPtr pScreen, FontPtr pFont) { return TRUE; } void fbQueryBestSize(int class, unsigned short *width, unsigned short *height, ScreenPtr pScreen) { unsigned short w; switch (class) { case CursorShape: if (*width > pScreen->width) *width = pScreen->width; if (*height > pScreen->height) *height = pScreen->height; break; case TileShape: case StippleShape: w = *width; if ((w & (w - 1)) && w < FB_UNIT) { for (w = 1; w < *width; w <<= 1); *width = w; } } } PixmapPtr _fbGetWindowPixmap(WindowPtr pWindow) { return fbGetWindowPixmap(pWindow); } void _fbSetWindowPixmap(WindowPtr pWindow, PixmapPtr pPixmap) { dixSetPrivate(&pWindow->devPrivates, fbGetWinPrivateKey(pWindow), pPixmap); } Bool fbSetupScreen(ScreenPtr pScreen, void *pbits, /* pointer to screen bitmap */ int xsize, /* in pixels */ int ysize, int dpix, /* dots per inch */ int dpiy, int width, /* pixel width of frame buffer */ int bpp) { /* bits per pixel for screen */ if (!fbAllocatePrivates(pScreen)) return FALSE; pScreen->defColormap = FakeClientID(0); /* let CreateDefColormap do whatever it wants for pixels */ pScreen->blackPixel = pScreen->whitePixel = (Pixel) 0; pScreen->QueryBestSize = fbQueryBestSize; /* SaveScreen */ pScreen->GetImage = fbGetImage; pScreen->GetSpans = fbGetSpans; pScreen->CreateWindow = fbCreateWindow; pScreen->DestroyWindow = fbDestroyWindow; pScreen->PositionWindow = fbPositionWindow; pScreen->ChangeWindowAttributes = fbChangeWindowAttributes; pScreen->RealizeWindow = fbMapWindow; pScreen->UnrealizeWindow = fbUnmapWindow; pScreen->CopyWindow = fbCopyWindow; pScreen->CreatePixmap = fbCreatePixmap; pScreen->DestroyPixmap = fbDestroyPixmap; pScreen->RealizeFont = fbRealizeFont; pScreen->UnrealizeFont = fbUnrealizeFont; pScreen->CreateGC = fbCreateGC; pScreen->CreateColormap = fbInitializeColormap; pScreen->DestroyColormap = (void (*)(ColormapPtr)) NoopDDA; pScreen->InstallColormap = fbInstallColormap; pScreen->UninstallColormap = fbUninstallColormap; pScreen->ListInstalledColormaps = fbListInstalledColormaps; pScreen->StoreColors = (void (*)(ColormapPtr, int, xColorItem *)) NoopDDA; pScreen->ResolveColor = fbResolveColor; pScreen->BitmapToRegion = fbPixmapToRegion; pScreen->GetWindowPixmap = _fbGetWindowPixmap; pScreen->SetWindowPixmap = _fbSetWindowPixmap; return TRUE; } #ifdef FB_ACCESS_WRAPPER Bool wfbFinishScreenInit(ScreenPtr pScreen, void *pbits, int xsize, int ysize, int dpix, int dpiy, int width, int bpp, SetupWrapProcPtr setupWrap, FinishWrapProcPtr finishWrap) #else Bool fbFinishScreenInit(ScreenPtr pScreen, void *pbits, int xsize, int ysize, int dpix, int dpiy, int width, int bpp) #endif { VisualPtr visuals; DepthPtr depths; int nvisuals; int ndepths; int rootdepth; VisualID defaultVisual; int imagebpp = bpp; #ifdef FB_DEBUG int stride; ysize -= 2; stride = (width * bpp) / 8; fbSetBits((FbStip *) pbits, stride / sizeof(FbStip), FB_HEAD_BITS); pbits = (void *) ((char *) pbits + stride); fbSetBits((FbStip *) ((char *) pbits + stride * ysize), stride / sizeof(FbStip), FB_TAIL_BITS); #endif /* * By default, a 24bpp screen will use 32bpp images, this avoids * problems with many applications which just can't handle packed * pixels. If you want real 24bit images, include a 24bpp * format in the pixmap formats */ if (bpp == 24) { int f; imagebpp = 32; /* * Check to see if we're advertising a 24bpp image format, * in which case windows will use it in preference to a 32 bit * format. */ for (f = 0; f < screenInfo.numPixmapFormats; f++) { if (screenInfo.formats[f].bitsPerPixel == 24) { imagebpp = 24; break; } } } if (imagebpp == 32) { fbGetScreenPrivate(pScreen)->win32bpp = bpp; fbGetScreenPrivate(pScreen)->pix32bpp = bpp; } else { fbGetScreenPrivate(pScreen)->win32bpp = 32; fbGetScreenPrivate(pScreen)->pix32bpp = 32; } #ifdef FB_ACCESS_WRAPPER fbGetScreenPrivate(pScreen)->setupWrap = setupWrap; fbGetScreenPrivate(pScreen)->finishWrap = finishWrap; #endif rootdepth = 0; if (!fbInitVisuals(&visuals, &depths, &nvisuals, &ndepths, &rootdepth, &defaultVisual, ((unsigned long) 1 << (imagebpp - 1)), 8)) return FALSE; if (!miScreenInit(pScreen, pbits, xsize, ysize, dpix, dpiy, width, rootdepth, ndepths, depths, defaultVisual, nvisuals, visuals)) return FALSE; /* overwrite miCloseScreen with our own */ pScreen->CloseScreen = fbCloseScreen; if (bpp == 24 && imagebpp == 32) { pScreen->ModifyPixmapHeader = fb24_32ModifyPixmapHeader; pScreen->CreateScreenResources = fb24_32CreateScreenResources; } return TRUE; } /* dts * (inch/dot) * (25.4 mm / inch) = mm */ #ifdef FB_ACCESS_WRAPPER Bool wfbScreenInit(ScreenPtr pScreen, void *pbits, int xsize, int ysize, int dpix, int dpiy, int width, int bpp, SetupWrapProcPtr setupWrap, FinishWrapProcPtr finishWrap) { if (!fbSetupScreen(pScreen, pbits, xsize, ysize, dpix, dpiy, width, bpp)) return FALSE; if (!wfbFinishScreenInit(pScreen, pbits, xsize, ysize, dpix, dpiy, width, bpp, setupWrap, finishWrap)) return FALSE; return TRUE; } #else Bool fbScreenInit(ScreenPtr pScreen, void *pbits, int xsize, int ysize, int dpix, int dpiy, int width, int bpp) { if (!fbSetupScreen(pScreen, pbits, xsize, ysize, dpix, dpiy, width, bpp)) return FALSE; if (!fbFinishScreenInit(pScreen, pbits, xsize, ysize, dpix, dpiy, width, bpp)) return FALSE; return TRUE; } #endif