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Diffstat (limited to 'xorg-server/fb/fbscreen.c')
-rw-r--r--xorg-server/fb/fbscreen.c299
1 files changed, 299 insertions, 0 deletions
diff --git a/xorg-server/fb/fbscreen.c b/xorg-server/fb/fbscreen.c
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+++ b/xorg-server/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 (int index, ScreenPtr pScreen)
+{
+ int d;
+ DepthPtr depths = pScreen->allowedDepths;
+
+ for (d = 0; d < pScreen->numDepths; d++)
+ xfree (depths[d].vids);
+ xfree (depths);
+ xfree (pScreen->visuals);
+ xfree (pScreen->devPrivate);
+#ifdef FB_SCREEN_PRIVATE
+ xfree (dixLookupPrivate(&pScreen->devPrivates, fbGetScreenPrivateKey()));
+#endif
+ 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)
+{
+#ifdef FB_NO_WINDOW_PIXMAPS
+ FatalError ("Attempted to set window pixmap without fb support\n");
+#else
+ dixSetPrivate(&pWindow->devPrivates, fbGetWinPrivateKey(), pPixmap);
+#endif
+}
+
+Bool
+fbSetupScreen(ScreenPtr pScreen,
+ pointer 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, NULL))
+ 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,
+ pointer pbits,
+ int xsize,
+ int ysize,
+ int dpix,
+ int dpiy,
+ int width,
+ int bpp,
+ SetupWrapProcPtr setupWrap,
+ FinishWrapProcPtr finishWrap)
+#else
+Bool
+fbFinishScreenInit(ScreenPtr pScreen,
+ pointer 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
+ */
+#ifdef FB_24_32BIT
+ 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;
+ }
+ }
+ }
+#endif
+#ifdef FB_SCREEN_PRIVATE
+ 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
+#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;
+#ifdef FB_24_32BIT
+ if (bpp == 24 && imagebpp == 32)
+ {
+ pScreen->ModifyPixmapHeader = fb24_32ModifyPixmapHeader;
+ pScreen->CreateScreenResources = fb24_32CreateScreenResources;
+ }
+#endif
+#if 0
+ /* leave backing store initialization to the enclosing code so
+ * it can choose the correct order of wrappers
+ */
+ /* init backing store here so we can overwrite CloseScreen without stepping
+ * on the backing store wrapped version */
+ fbInitializeBackingStore (pScreen);
+#endif
+ return TRUE;
+}
+
+/* dts * (inch/dot) * (25.4 mm / inch) = mm */
+#ifdef FB_ACCESS_WRAPPER
+Bool
+wfbScreenInit(ScreenPtr pScreen,
+ pointer 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,
+ pointer 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
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