130 lines
4.9 KiB
C
130 lines
4.9 KiB
C
/***********************************************************
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Copyright 1987, 1998 The Open Group
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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.
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from The Open Group.
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Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee is hereby granted,
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provided that the above copyright notice appear in all copies and that
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both that copyright notice and this permission notice appear in
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supporting documentation, and that the name of Digital not be
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used in advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
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DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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SOFTWARE.
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******************************************************************/
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#ifndef SERVERMD_H
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#define SERVERMD_H 1
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#if !defined(_DIX_CONFIG_H_) && !defined(_XORG_SERVER_H_)
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#error Drivers must include xorg-server.h before any other xserver headers
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#error xserver code must include dix-config.h before any other headers
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#endif
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#include <X11/Xarch.h> /* for X_LITTLE_ENDIAN/X_BIG_ENDIAN */
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#if X_BYTE_ORDER == X_LITTLE_ENDIAN
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#define IMAGE_BYTE_ORDER LSBFirst
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#define BITMAP_BIT_ORDER LSBFirst
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#elif X_BYTE_ORDER == X_BIG_ENDIAN
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#define IMAGE_BYTE_ORDER MSBFirst
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#define BITMAP_BIT_ORDER MSBFirst
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#else
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#error "Too weird to live."
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#endif
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#ifndef GLYPHPADBYTES
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#define GLYPHPADBYTES 4
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#endif
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/* size of buffer to use with GetImage, measured in bytes. There's obviously
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* a trade-off between the amount of heap used and the number of times the
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* ddx routine has to be called.
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*/
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#ifndef IMAGE_BUFSIZE
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#define IMAGE_BUFSIZE (64*1024)
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#endif
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/* pad scanline to a longword */
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#ifndef BITMAP_SCANLINE_UNIT
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#define BITMAP_SCANLINE_UNIT 32
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#endif
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#ifndef BITMAP_SCANLINE_PAD
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#define BITMAP_SCANLINE_PAD 32
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#define LOG2_BITMAP_PAD 5
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#define LOG2_BYTES_PER_SCANLINE_PAD 2
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#endif
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#include <X11/Xfuncproto.h>
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/*
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* This returns the number of padding units, for depth d and width w.
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* For bitmaps this can be calculated with the macros above.
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* Other depths require either grovelling over the formats field of the
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* screenInfo or hardwired constants.
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*/
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typedef struct _PaddingInfo {
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int padRoundUp; /* pixels per pad unit - 1 */
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int padPixelsLog2; /* log 2 (pixels per pad unit) */
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int padBytesLog2; /* log 2 (bytes per pad unit) */
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int notPower2; /* bitsPerPixel not a power of 2 */
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int bytesPerPixel; /* only set when notPower2 is TRUE */
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int bitsPerPixel; /* bits per pixel */
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} PaddingInfo;
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extern _X_EXPORT PaddingInfo PixmapWidthPaddingInfo[];
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/* The only portable way to get the bpp from the depth is to look it up */
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#define BitsPerPixel(d) (PixmapWidthPaddingInfo[d].bitsPerPixel)
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#define PixmapWidthInPadUnits(w, d) \
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(PixmapWidthPaddingInfo[d].notPower2 ? \
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(((int)(w) * PixmapWidthPaddingInfo[d].bytesPerPixel + \
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PixmapWidthPaddingInfo[d].bytesPerPixel) >> \
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PixmapWidthPaddingInfo[d].padBytesLog2) : \
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((int)((w) + PixmapWidthPaddingInfo[d].padRoundUp) >> \
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PixmapWidthPaddingInfo[d].padPixelsLog2))
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/*
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* Return the number of bytes to which a scanline of the given
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* depth and width will be padded.
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*/
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#define PixmapBytePad(w, d) \
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(PixmapWidthInPadUnits(w, d) << PixmapWidthPaddingInfo[d].padBytesLog2)
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#define BitmapBytePad(w) \
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(((int)((w) + BITMAP_SCANLINE_PAD - 1) >> LOG2_BITMAP_PAD) << LOG2_BYTES_PER_SCANLINE_PAD)
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#endif /* SERVERMD_H */
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