49f77fff14
Save in a few special cases, _X_EXPORT should not be used in C source files. Instead, it should be used in headers, and the proper C source include that header. Some special cases are symbols that need to be shared between modules, but not expected to be used by external drivers, and symbols that are accessible via LoaderSymbol/dlopen. This patch also adds conditionally some new sdk header files, depending on extensions enabled. These files were added to match pattern for other extensions/modules, that is, have the headers "deciding" symbol visibility in the sdk. These headers are: o Xext/panoramiXsrv.h, Xext/panoramiX.h o fbpict.h (unconditionally) o vidmodeproc.h o mioverlay.h (unconditionally, used only by xaa) o xfixes.h (unconditionally, symbols required by dri2) LoaderSymbol and similar functions now don't have different prototypes, in loaderProcs.h and xf86Module.h, so that both headers can be included, without the need of defining IN_LOADER. xf86NewInputDevice() device prototype readded to xf86Xinput.h, but not exported (and with a comment about it).
393 lines
9.7 KiB
C
393 lines
9.7 KiB
C
/*
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* Copyright © 1998 Keith Packard
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of Keith Packard not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. Keith Packard makes no
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* representations about the suitability of this software for any purpose. It
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* is provided "as is" without express or implied warranty.
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*
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* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include <stdlib.h>
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#include "fb.h"
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PixmapPtr
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fbCreatePixmapBpp (ScreenPtr pScreen, int width, int height, int depth, int bpp,
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unsigned usage_hint)
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{
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PixmapPtr pPixmap;
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size_t datasize;
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size_t paddedWidth;
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int adjust;
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int base;
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paddedWidth = ((width * bpp + FB_MASK) >> FB_SHIFT) * sizeof (FbBits);
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if (paddedWidth / 4 > 32767 || height > 32767)
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return NullPixmap;
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datasize = height * paddedWidth;
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base = pScreen->totalPixmapSize;
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adjust = 0;
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if (base & 7)
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adjust = 8 - (base & 7);
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datasize += adjust;
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#ifdef FB_DEBUG
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datasize += 2 * paddedWidth;
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#endif
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pPixmap = AllocatePixmap(pScreen, datasize);
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if (!pPixmap)
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return NullPixmap;
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pPixmap->drawable.type = DRAWABLE_PIXMAP;
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pPixmap->drawable.class = 0;
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pPixmap->drawable.pScreen = pScreen;
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pPixmap->drawable.depth = depth;
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pPixmap->drawable.bitsPerPixel = bpp;
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pPixmap->drawable.id = 0;
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pPixmap->drawable.serialNumber = NEXT_SERIAL_NUMBER;
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pPixmap->drawable.x = 0;
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pPixmap->drawable.y = 0;
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pPixmap->drawable.width = width;
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pPixmap->drawable.height = height;
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pPixmap->devKind = paddedWidth;
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pPixmap->refcnt = 1;
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pPixmap->devPrivate.ptr = (pointer) ((char *)pPixmap + base + adjust);
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#ifdef FB_DEBUG
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pPixmap->devPrivate.ptr = (void *) ((char *) pPixmap->devPrivate.ptr + paddedWidth);
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fbInitializeDrawable (&pPixmap->drawable);
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#endif
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#ifdef COMPOSITE
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pPixmap->screen_x = 0;
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pPixmap->screen_y = 0;
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#endif
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pPixmap->usage_hint = usage_hint;
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return pPixmap;
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}
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PixmapPtr
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fbCreatePixmap (ScreenPtr pScreen, int width, int height, int depth,
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unsigned usage_hint)
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{
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int bpp;
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bpp = BitsPerPixel (depth);
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#ifdef FB_SCREEN_PRIVATE
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if (bpp == 32 && depth <= 24)
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bpp = fbGetScreenPrivate(pScreen)->pix32bpp;
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#endif
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return fbCreatePixmapBpp (pScreen, width, height, depth, bpp, usage_hint);
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}
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Bool
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fbDestroyPixmap (PixmapPtr pPixmap)
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{
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if(--pPixmap->refcnt)
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return TRUE;
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dixFreePrivates(pPixmap->devPrivates);
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xfree(pPixmap);
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return TRUE;
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}
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#define ADDRECT(reg,r,fr,rx1,ry1,rx2,ry2) \
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if (((rx1) < (rx2)) && ((ry1) < (ry2)) && \
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(!((reg)->data->numRects && \
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((r-1)->y1 == (ry1)) && \
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((r-1)->y2 == (ry2)) && \
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((r-1)->x1 <= (rx1)) && \
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((r-1)->x2 >= (rx2))))) \
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{ \
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if ((reg)->data->numRects == (reg)->data->size) \
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{ \
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miRectAlloc(reg, 1); \
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fr = REGION_BOXPTR(reg); \
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r = fr + (reg)->data->numRects; \
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} \
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r->x1 = (rx1); \
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r->y1 = (ry1); \
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r->x2 = (rx2); \
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r->y2 = (ry2); \
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(reg)->data->numRects++; \
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if(r->x1 < (reg)->extents.x1) \
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(reg)->extents.x1 = r->x1; \
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if(r->x2 > (reg)->extents.x2) \
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(reg)->extents.x2 = r->x2; \
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r++; \
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}
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/* Convert bitmap clip mask into clipping region.
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* First, goes through each line and makes boxes by noting the transitions
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* from 0 to 1 and 1 to 0.
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* Then it coalesces the current line with the previous if they have boxes
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* at the same X coordinates.
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*/
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RegionPtr
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fbPixmapToRegion(PixmapPtr pPix)
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{
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register RegionPtr pReg;
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FbBits *pw, w;
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register int ib;
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int width, h, base, rx1 = 0, crects;
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FbBits *pwLineEnd;
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int irectPrevStart, irectLineStart;
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register BoxPtr prectO, prectN;
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BoxPtr FirstRect, rects, prectLineStart;
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Bool fInBox, fSame;
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register FbBits mask0 = FB_ALLONES & ~FbScrRight(FB_ALLONES, 1);
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FbBits *pwLine;
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int nWidth;
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pReg = REGION_CREATE(pPix->drawable.pScreen, NULL, 1);
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if(!pReg)
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return NullRegion;
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FirstRect = REGION_BOXPTR(pReg);
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rects = FirstRect;
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fbPrepareAccess(&pPix->drawable);
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pwLine = (FbBits *) pPix->devPrivate.ptr;
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nWidth = pPix->devKind >> (FB_SHIFT-3);
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width = pPix->drawable.width;
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pReg->extents.x1 = width - 1;
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pReg->extents.x2 = 0;
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irectPrevStart = -1;
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for(h = 0; h < pPix->drawable.height; h++)
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{
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pw = pwLine;
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pwLine += nWidth;
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irectLineStart = rects - FirstRect;
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/* If the Screen left most bit of the word is set, we're starting in
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* a box */
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if(READ(pw) & mask0)
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{
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fInBox = TRUE;
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rx1 = 0;
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}
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else
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fInBox = FALSE;
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/* Process all words which are fully in the pixmap */
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pwLineEnd = pw + (width >> FB_SHIFT);
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for (base = 0; pw < pwLineEnd; base += FB_UNIT)
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{
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w = READ(pw++);
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if (fInBox)
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{
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if (!~w)
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continue;
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}
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else
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{
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if (!w)
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continue;
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}
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for(ib = 0; ib < FB_UNIT; ib++)
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{
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/* If the Screen left most bit of the word is set, we're
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* starting a box */
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if(w & mask0)
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{
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if(!fInBox)
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{
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rx1 = base + ib;
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/* start new box */
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fInBox = TRUE;
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}
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}
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else
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{
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if(fInBox)
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{
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/* end box */
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ADDRECT(pReg, rects, FirstRect,
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rx1, h, base + ib, h + 1);
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fInBox = FALSE;
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}
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}
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/* Shift the word VISUALLY left one. */
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w = FbScrLeft(w, 1);
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}
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}
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if(width & FB_MASK)
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{
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/* Process final partial word on line */
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w = READ(pw++);
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for(ib = 0; ib < (width & FB_MASK); ib++)
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{
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/* If the Screen left most bit of the word is set, we're
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* starting a box */
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if(w & mask0)
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{
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if(!fInBox)
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{
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rx1 = base + ib;
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/* start new box */
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fInBox = TRUE;
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}
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}
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else
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{
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if(fInBox)
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{
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/* end box */
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ADDRECT(pReg, rects, FirstRect,
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rx1, h, base + ib, h + 1);
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fInBox = FALSE;
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}
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}
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/* Shift the word VISUALLY left one. */
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w = FbScrLeft(w, 1);
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}
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}
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/* If scanline ended with last bit set, end the box */
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if(fInBox)
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{
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ADDRECT(pReg, rects, FirstRect,
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rx1, h, base + (width & FB_MASK), h + 1);
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}
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/* if all rectangles on this line have the same x-coords as
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* those on the previous line, then add 1 to all the previous y2s and
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* throw away all the rectangles from this line
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*/
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fSame = FALSE;
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if(irectPrevStart != -1)
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{
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crects = irectLineStart - irectPrevStart;
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if(crects == ((rects - FirstRect) - irectLineStart))
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{
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prectO = FirstRect + irectPrevStart;
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prectN = prectLineStart = FirstRect + irectLineStart;
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fSame = TRUE;
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while(prectO < prectLineStart)
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{
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if((prectO->x1 != prectN->x1) || (prectO->x2 != prectN->x2))
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{
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fSame = FALSE;
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break;
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}
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prectO++;
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prectN++;
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}
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if (fSame)
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{
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prectO = FirstRect + irectPrevStart;
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while(prectO < prectLineStart)
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{
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prectO->y2 += 1;
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prectO++;
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}
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rects -= crects;
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pReg->data->numRects -= crects;
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}
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}
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}
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if(!fSame)
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irectPrevStart = irectLineStart;
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}
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if (!pReg->data->numRects)
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pReg->extents.x1 = pReg->extents.x2 = 0;
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else
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{
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pReg->extents.y1 = REGION_BOXPTR(pReg)->y1;
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pReg->extents.y2 = REGION_END(pReg)->y2;
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if (pReg->data->numRects == 1)
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{
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xfree(pReg->data);
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pReg->data = (RegDataPtr)NULL;
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}
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}
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fbFinishAccess(&pPix->drawable);
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#ifdef DEBUG
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if (!miValidRegion(pReg))
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FatalError("Assertion failed file %s, line %d: expr\n", __FILE__, __LINE__);
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#endif
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return(pReg);
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}
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#ifdef FB_DEBUG
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#ifndef WIN32
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#include <stdio.h>
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#else
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#include <dbg.h>
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#endif
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static Bool
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fbValidateBits (FbStip *bits, int stride, FbStip data)
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{
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while (stride--)
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{
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if (*bits != data)
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{
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#ifdef WIN32
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NCD_DEBUG ((DEBUG_FAILURE, "fdValidateBits failed at 0x%x (is 0x%x want 0x%x)",
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bits, *bits, data));
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#else
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fprintf (stderr, "fbValidateBits failed\n");
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#endif
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return FALSE;
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}
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bits++;
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}
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}
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void
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fbValidateDrawable (DrawablePtr pDrawable)
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{
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FbStip *bits, *first, *last;
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int stride, bpp;
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int xoff, yoff;
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int height;
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Bool failed;
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if (pDrawable->type != DRAWABLE_PIXMAP)
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pDrawable = (DrawablePtr) fbGetWindowPixmap(pDrawable);
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fbGetStipDrawable(pDrawable, bits, stride, bpp, xoff, yoff);
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first = bits - stride;
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last = bits + stride * pDrawable->height;
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if (!fbValidateBits (first, stride, FB_HEAD_BITS) ||
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!fbValidateBits (last, stride, FB_TAIL_BITS))
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fbInitializeDrawable(pDrawable);
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fbFinishAccess (pDrawable);
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}
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void
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fbSetBits (FbStip *bits, int stride, FbStip data)
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{
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while (stride--)
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*bits++ = data;
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}
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void
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fbInitializeDrawable (DrawablePtr pDrawable)
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{
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FbStip *bits, *first, *last;
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int stride, bpp;
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int xoff, yoff;
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fbGetStipDrawable(pDrawable, bits, stride, bpp, xoff, yoff);
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first = bits - stride;
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last = bits + stride * pDrawable->height;
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fbSetBits (first, stride, FB_HEAD_BITS);
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fbSetBits (last, stride, FB_TAIL_BITS);
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fbFinishAccess (pDrawable);
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}
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#endif /* FB_DEBUG */
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