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Diffstat (limited to 'xorg-server/include/servermd.h')
-rw-r--r--xorg-server/include/servermd.h689
1 files changed, 355 insertions, 334 deletions
diff --git a/xorg-server/include/servermd.h b/xorg-server/include/servermd.h
index e1d644e00..b5ae6ac71 100644
--- a/xorg-server/include/servermd.h
+++ b/xorg-server/include/servermd.h
@@ -1,334 +1,355 @@
-/***********************************************************
-
-Copyright 1987, 1998 The Open Group
-
-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.
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
-AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-Except as contained in this notice, the name of The Open Group shall not be
-used in advertising or otherwise to promote the sale, use or other dealings
-in this Software without prior written authorization from The Open Group.
-
-
-Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
-
- All Rights Reserved
-
-Permission to use, copy, modify, and distribute this software and its
-documentation for any purpose and without fee is hereby granted,
-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 Digital not be
-used in advertising or publicity pertaining to distribution of the
-software without specific, written prior permission.
-
-DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
-ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
-DIGITAL 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.
-
-******************************************************************/
-
-#ifndef SERVERMD_H
-#define SERVERMD_H 1
-
-/*
- * Note: much of this is vestigial from mfb/cfb times. This should
- * really be simplified even further.
- */
-
-/*
- * Machine dependent values:
- * GLYPHPADBYTES should be chosen with consideration for the space-time
- * trade-off. Padding to 0 bytes means that there is no wasted space
- * in the font bitmaps (both on disk and in memory), but that access of
- * the bitmaps will cause odd-address memory references. Padding to
- * 2 bytes would ensure even address memory references and would
- * be suitable for a 68010-class machine, but at the expense of wasted
- * space in the font bitmaps. Padding to 4 bytes would be good
- * for real 32 bit machines, etc. Be sure that you tell the font
- * compiler what kind of padding you want because its defines are
- * kept separate from this. See server/include/font.h for how
- * GLYPHPADBYTES is used.
- */
-
-#ifdef __avr32__
-
-#define IMAGE_BYTE_ORDER MSBFirst
-#define BITMAP_BIT_ORDER MSBFirst
-#define GLYPHPADBYTES 4
-
-#endif /* __avr32__ */
-
-#ifdef __arm32__
-
-#define IMAGE_BYTE_ORDER LSBFirst
-#define BITMAP_BIT_ORDER LSBFirst
-#define GLYPHPADBYTES 4
-
-#endif /* __arm32__ */
-
-#if defined __hppa__
-
-#define IMAGE_BYTE_ORDER MSBFirst
-#define BITMAP_BIT_ORDER MSBFirst
-#define GLYPHPADBYTES 4 /* to make fb work */
- /* byte boundries */
-#endif /* hpux || __hppa__ */
-
-#if defined(__powerpc__) || defined(__ppc__) || defined(__ppc64__)
-
-#define IMAGE_BYTE_ORDER MSBFirst
-#define BITMAP_BIT_ORDER MSBFirst
-#define GLYPHPADBYTES 4
-
-#endif /* PowerPC */
-
-#if defined(__sh__)
-
-#if defined(__BIG_ENDIAN__)
-# define IMAGE_BYTE_ORDER MSBFirst
-# define BITMAP_BIT_ORDER MSBFirst
-# define GLYPHPADBYTES 4
-#else
-# define IMAGE_BYTE_ORDER LSBFirst
-# define BITMAP_BIT_ORDER LSBFirst
-# define GLYPHPADBYTES 4
-#endif
-
-#endif /* SuperH */
-
-#if defined(__m32r__)
-
-#if defined(__BIG_ENDIAN__)
-# define IMAGE_BYTE_ORDER MSBFirst
-# define BITMAP_BIT_ORDER MSBFirst
-# define GLYPHPADBYTES 4
-#else
-# define IMAGE_BYTE_ORDER LSBFirst
-# define BITMAP_BIT_ORDER LSBFirst
-# define GLYPHPADBYTES 4
-#endif
-
-#endif /* __m32r__ */
-
-#if (defined(sun) && (defined(__sparc) || defined(sparc))) || \
- (defined(__uxp__) && (defined(sparc) || defined(mc68000))) || \
- defined(__sparc__) || defined(__mc68000__)
-
-#if defined(__sparc) || defined(__sparc__)
-# if !defined(sparc)
-# define sparc 1
-# endif
-#endif
-
-#if defined(sun386) || defined(sun5)
-# define IMAGE_BYTE_ORDER LSBFirst /* Values for the SUN only */
-# define BITMAP_BIT_ORDER LSBFirst
-#else
-# define IMAGE_BYTE_ORDER MSBFirst /* Values for the SUN only */
-# define BITMAP_BIT_ORDER MSBFirst
-#endif
-
-#define GLYPHPADBYTES 4
-
-#endif /* sun && !(i386 && SVR4) */
-
-
-#if defined(ibm032) || defined (ibm)
-
-#ifdef __i386__
-# define IMAGE_BYTE_ORDER LSBFirst /* Value for PS/2 only */
-#else
-# define IMAGE_BYTE_ORDER MSBFirst /* Values for the RT only*/
-#endif
-#define BITMAP_BIT_ORDER MSBFirst
-#define GLYPHPADBYTES 1
-/* ibm pcc doesn't understand pragmas. */
-
-#ifdef __i386__
-#define BITMAP_SCANLINE_UNIT 8
-#endif
-
-#endif /* ibm */
-
-#if (defined(mips) || defined(__mips))
-
-#if defined(MIPSEL) || defined(__MIPSEL__)
-# define IMAGE_BYTE_ORDER LSBFirst /* Values for the PMAX only */
-# define BITMAP_BIT_ORDER LSBFirst
-# define GLYPHPADBYTES 4
-#else
-# define IMAGE_BYTE_ORDER MSBFirst /* Values for the MIPS only */
-# define BITMAP_BIT_ORDER MSBFirst
-# define GLYPHPADBYTES 4
-#endif
-
-#endif /* mips */
-
-#if defined(__alpha) || defined(__alpha__)
-# define IMAGE_BYTE_ORDER LSBFirst /* Values for the Alpha only */
-# define BITMAP_BIT_ORDER LSBFirst
-# define GLYPHPADBYTES 4
-
-#endif /* alpha */
-
-#if defined (linux) && defined (__s390__)
-
-#define IMAGE_BYTE_ORDER MSBFirst
-#define BITMAP_BIT_ORDER MSBFirst
-#define GLYPHPADBYTES 4
-
-#define BITMAP_SCANLINE_UNIT 8
-#define FAST_UNALIGNED_READ
-
-#endif /* linux/s390 */
-
-#if defined (linux) && defined (__s390x__)
-
-#define IMAGE_BYTE_ORDER MSBFirst
-#define BITMAP_BIT_ORDER MSBFirst
-#define GLYPHPADBYTES 4
-
-#define BITMAP_SCANLINE_UNIT 8
-#define FAST_UNALIGNED_READ
-
-#endif /* linux/s390x */
-
-
-#if defined(__ia64__) || defined(ia64)
-
-# define IMAGE_BYTE_ORDER LSBFirst
-# define BITMAP_BIT_ORDER LSBFirst
-# define GLYPHPADBYTES 4
-
-#endif /* ia64 */
-
-#if defined(__amd64__) || defined(amd64) || defined(__amd64)
-# define IMAGE_BYTE_ORDER LSBFirst
-# define BITMAP_BIT_ORDER LSBFirst
-# define GLYPHPADBYTES 4
-/* ???? */
-#endif /* AMD64 */
-
-#if defined(SVR4) && (defined(__i386__) || defined(__i386) ) || \
- defined(__alpha__) || defined(__alpha) || \
- defined(__i386__) || \
- defined(__s390x__) || defined(__s390__)
-
-#ifndef IMAGE_BYTE_ORDER
-#define IMAGE_BYTE_ORDER LSBFirst
-#endif
-
-#ifndef BITMAP_BIT_ORDER
-# define BITMAP_BIT_ORDER LSBFirst
-#endif
-
-#ifndef GLYPHPADBYTES
-#define GLYPHPADBYTES 4
-#endif
-
-#endif /* SVR4 / BSD / i386 */
-
-#if defined (linux) && defined (__mc68000__)
-
-#define IMAGE_BYTE_ORDER MSBFirst
-#define BITMAP_BIT_ORDER MSBFirst
-#define GLYPHPADBYTES 4
-
-#endif /* linux/m68k */
-
-
-/* linux on ARM */
-#if defined(linux) && defined(__arm__)
-#define IMAGE_BYTE_ORDER LSBFirst
-#define BITMAP_BIT_ORDER LSBFirst
-#define GLYPHPADBYTES 4
-#endif
-
-/* linux on IBM S/390 */
-#if defined (linux) && defined (__s390__)
-#define IMAGE_BYTE_ORDER MSBFirst
-#define BITMAP_BIT_ORDER MSBFirst
-#define GLYPHPADBYTES 4
-#endif /* linux/s390 */
-
-/* size of buffer to use with GetImage, measured in bytes. There's obviously
- * a trade-off between the amount of heap used and the number of times the
- * ddx routine has to be called.
- */
-#ifndef IMAGE_BUFSIZE
-#define IMAGE_BUFSIZE (64*1024)
-#endif
-
-/* pad scanline to a longword */
-#ifndef BITMAP_SCANLINE_UNIT
-#define BITMAP_SCANLINE_UNIT 32
-#endif
-
-#ifndef BITMAP_SCANLINE_PAD
-#define BITMAP_SCANLINE_PAD 32
-#define LOG2_BITMAP_PAD 5
-#define LOG2_BYTES_PER_SCANLINE_PAD 2
-#endif
-
-#include <X11/Xfuncproto.h>
-/*
- * This returns the number of padding units, for depth d and width w.
- * For bitmaps this can be calculated with the macros above.
- * Other depths require either grovelling over the formats field of the
- * screenInfo or hardwired constants.
- */
-
-typedef struct _PaddingInfo {
- int padRoundUp; /* pixels per pad unit - 1 */
- int padPixelsLog2; /* log 2 (pixels per pad unit) */
- int padBytesLog2; /* log 2 (bytes per pad unit) */
- int notPower2; /* bitsPerPixel not a power of 2 */
- int bytesPerPixel; /* only set when notPower2 is TRUE */
- int bitsPerPixel; /* bits per pixel */
-} PaddingInfo;
-extern _X_EXPORT PaddingInfo PixmapWidthPaddingInfo[];
-
-/* The only portable way to get the bpp from the depth is to look it up */
-#define BitsPerPixel(d) (PixmapWidthPaddingInfo[d].bitsPerPixel)
-
-#define PixmapWidthInPadUnits(w, d) \
- (PixmapWidthPaddingInfo[d].notPower2 ? \
- (((int)(w) * PixmapWidthPaddingInfo[d].bytesPerPixel + \
- PixmapWidthPaddingInfo[d].bytesPerPixel) >> \
- PixmapWidthPaddingInfo[d].padBytesLog2) : \
- ((int)((w) + PixmapWidthPaddingInfo[d].padRoundUp) >> \
- PixmapWidthPaddingInfo[d].padPixelsLog2))
-
-/*
- * Return the number of bytes to which a scanline of the given
- * depth and width will be padded.
- */
-#define PixmapBytePad(w, d) \
- (PixmapWidthInPadUnits(w, d) << PixmapWidthPaddingInfo[d].padBytesLog2)
-
-#define BitmapBytePad(w) \
- (((int)((w) + BITMAP_SCANLINE_PAD - 1) >> LOG2_BITMAP_PAD) << LOG2_BYTES_PER_SCANLINE_PAD)
-
-#define PixmapWidthInPadUnitsProto(w, d) PixmapWidthInPadUnits(w, d)
-#define PixmapBytePadProto(w, d) PixmapBytePad(w, d)
-#define BitmapBytePadProto(w) BitmapBytePad(w)
-
-#endif /* SERVERMD_H */
+/***********************************************************
+
+Copyright 1987, 1998 The Open Group
+
+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.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+
+
+Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
+
+ All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+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 Digital not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.
+
+DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+DIGITAL 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.
+
+******************************************************************/
+
+#ifndef SERVERMD_H
+#define SERVERMD_H 1
+
+/*
+ * Note: much of this is vestigial from mfb/cfb times. This should
+ * really be simplified even further.
+ */
+
+/*
+ * Machine dependent values:
+ * GLYPHPADBYTES should be chosen with consideration for the space-time
+ * trade-off. Padding to 0 bytes means that there is no wasted space
+ * in the font bitmaps (both on disk and in memory), but that access of
+ * the bitmaps will cause odd-address memory references. Padding to
+ * 2 bytes would ensure even address memory references and would
+ * be suitable for a 68010-class machine, but at the expense of wasted
+ * space in the font bitmaps. Padding to 4 bytes would be good
+ * for real 32 bit machines, etc. Be sure that you tell the font
+ * compiler what kind of padding you want because its defines are
+ * kept separate from this. See server/include/font.h for how
+ * GLYPHPADBYTES is used.
+ */
+
+#ifdef __avr32__
+
+#define IMAGE_BYTE_ORDER MSBFirst
+#define BITMAP_BIT_ORDER MSBFirst
+#define GLYPHPADBYTES 4
+
+#endif /* __avr32__ */
+
+#ifdef __arm32__
+
+#define IMAGE_BYTE_ORDER LSBFirst
+#define BITMAP_BIT_ORDER LSBFirst
+#define GLYPHPADBYTES 4
+
+#endif /* __arm32__ */
+
+#if defined(__nds32__)
+
+#define IMAGE_BYTE_ORDER LSBFirst
+
+#if defined(XF86MONOVGA) || defined(XF86VGA16) || defined(XF86MONO)
+# define BITMAP_BIT_ORDER MSBFirst
+#else
+# define BITMAP_BIT_ORDER LSBFirst
+#endif
+
+#if defined(XF86MONOVGA) || defined(XF86VGA16)
+# define BITMAP_SCANLINE_UNIT 8
+#endif
+
+#define GLYPHPADBYTES 4
+#define GETLEFTBITS_ALIGNMENT 1
+#define LARGE_INSTRUCTION_CACHE
+#define AVOID_MEMORY_READ
+
+#endif /* __nds32__ */
+
+#if defined __hppa__
+
+#define IMAGE_BYTE_ORDER MSBFirst
+#define BITMAP_BIT_ORDER MSBFirst
+#define GLYPHPADBYTES 4 /* to make fb work */
+ /* byte boundries */
+#endif /* hpux || __hppa__ */
+
+#if defined(__powerpc__) || defined(__ppc__) || defined(__ppc64__)
+
+#define IMAGE_BYTE_ORDER MSBFirst
+#define BITMAP_BIT_ORDER MSBFirst
+#define GLYPHPADBYTES 4
+
+#endif /* PowerPC */
+
+#if defined(__sh__)
+
+#if defined(__BIG_ENDIAN__)
+# define IMAGE_BYTE_ORDER MSBFirst
+# define BITMAP_BIT_ORDER MSBFirst
+# define GLYPHPADBYTES 4
+#else
+# define IMAGE_BYTE_ORDER LSBFirst
+# define BITMAP_BIT_ORDER LSBFirst
+# define GLYPHPADBYTES 4
+#endif
+
+#endif /* SuperH */
+
+#if defined(__m32r__)
+
+#if defined(__BIG_ENDIAN__)
+# define IMAGE_BYTE_ORDER MSBFirst
+# define BITMAP_BIT_ORDER MSBFirst
+# define GLYPHPADBYTES 4
+#else
+# define IMAGE_BYTE_ORDER LSBFirst
+# define BITMAP_BIT_ORDER LSBFirst
+# define GLYPHPADBYTES 4
+#endif
+
+#endif /* __m32r__ */
+
+#if (defined(sun) && (defined(__sparc) || defined(sparc))) || \
+ (defined(__uxp__) && (defined(sparc) || defined(mc68000))) || \
+ defined(__sparc__) || defined(__mc68000__)
+
+#if defined(__sparc) || defined(__sparc__)
+# if !defined(sparc)
+# define sparc 1
+# endif
+#endif
+
+#if defined(sun386) || defined(sun5)
+# define IMAGE_BYTE_ORDER LSBFirst /* Values for the SUN only */
+# define BITMAP_BIT_ORDER LSBFirst
+#else
+# define IMAGE_BYTE_ORDER MSBFirst /* Values for the SUN only */
+# define BITMAP_BIT_ORDER MSBFirst
+#endif
+
+#define GLYPHPADBYTES 4
+
+#endif /* sun && !(i386 && SVR4) */
+
+
+#if defined(ibm032) || defined (ibm)
+
+#ifdef __i386__
+# define IMAGE_BYTE_ORDER LSBFirst /* Value for PS/2 only */
+#else
+# define IMAGE_BYTE_ORDER MSBFirst /* Values for the RT only*/
+#endif
+#define BITMAP_BIT_ORDER MSBFirst
+#define GLYPHPADBYTES 1
+/* ibm pcc doesn't understand pragmas. */
+
+#ifdef __i386__
+#define BITMAP_SCANLINE_UNIT 8
+#endif
+
+#endif /* ibm */
+
+#if (defined(mips) || defined(__mips))
+
+#if defined(MIPSEL) || defined(__MIPSEL__)
+# define IMAGE_BYTE_ORDER LSBFirst /* Values for the PMAX only */
+# define BITMAP_BIT_ORDER LSBFirst
+# define GLYPHPADBYTES 4
+#else
+# define IMAGE_BYTE_ORDER MSBFirst /* Values for the MIPS only */
+# define BITMAP_BIT_ORDER MSBFirst
+# define GLYPHPADBYTES 4
+#endif
+
+#endif /* mips */
+
+#if defined(__alpha) || defined(__alpha__)
+# define IMAGE_BYTE_ORDER LSBFirst /* Values for the Alpha only */
+# define BITMAP_BIT_ORDER LSBFirst
+# define GLYPHPADBYTES 4
+
+#endif /* alpha */
+
+#if defined (linux) && defined (__s390__)
+
+#define IMAGE_BYTE_ORDER MSBFirst
+#define BITMAP_BIT_ORDER MSBFirst
+#define GLYPHPADBYTES 4
+
+#define BITMAP_SCANLINE_UNIT 8
+#define FAST_UNALIGNED_READ
+
+#endif /* linux/s390 */
+
+#if defined (linux) && defined (__s390x__)
+
+#define IMAGE_BYTE_ORDER MSBFirst
+#define BITMAP_BIT_ORDER MSBFirst
+#define GLYPHPADBYTES 4
+
+#define BITMAP_SCANLINE_UNIT 8
+#define FAST_UNALIGNED_READ
+
+#endif /* linux/s390x */
+
+
+#if defined(__ia64__) || defined(ia64)
+
+# define IMAGE_BYTE_ORDER LSBFirst
+# define BITMAP_BIT_ORDER LSBFirst
+# define GLYPHPADBYTES 4
+
+#endif /* ia64 */
+
+#if defined(__amd64__) || defined(amd64) || defined(__amd64)
+# define IMAGE_BYTE_ORDER LSBFirst
+# define BITMAP_BIT_ORDER LSBFirst
+# define GLYPHPADBYTES 4
+/* ???? */
+#endif /* AMD64 */
+
+#if defined(SVR4) && (defined(__i386__) || defined(__i386) ) || \
+ defined(__alpha__) || defined(__alpha) || \
+ defined(__i386__) || \
+ defined(__s390x__) || defined(__s390__)
+
+#ifndef IMAGE_BYTE_ORDER
+#define IMAGE_BYTE_ORDER LSBFirst
+#endif
+
+#ifndef BITMAP_BIT_ORDER
+# define BITMAP_BIT_ORDER LSBFirst
+#endif
+
+#ifndef GLYPHPADBYTES
+#define GLYPHPADBYTES 4
+#endif
+
+#endif /* SVR4 / BSD / i386 */
+
+#if defined (linux) && defined (__mc68000__)
+
+#define IMAGE_BYTE_ORDER MSBFirst
+#define BITMAP_BIT_ORDER MSBFirst
+#define GLYPHPADBYTES 4
+
+#endif /* linux/m68k */
+
+
+/* linux on ARM */
+#if defined(linux) && defined(__arm__)
+#define IMAGE_BYTE_ORDER LSBFirst
+#define BITMAP_BIT_ORDER LSBFirst
+#define GLYPHPADBYTES 4
+#endif
+
+/* linux on IBM S/390 */
+#if defined (linux) && defined (__s390__)
+#define IMAGE_BYTE_ORDER MSBFirst
+#define BITMAP_BIT_ORDER MSBFirst
+#define GLYPHPADBYTES 4
+#endif /* linux/s390 */
+
+/* size of buffer to use with GetImage, measured in bytes. There's obviously
+ * a trade-off between the amount of heap used and the number of times the
+ * ddx routine has to be called.
+ */
+#ifndef IMAGE_BUFSIZE
+#define IMAGE_BUFSIZE (64*1024)
+#endif
+
+/* pad scanline to a longword */
+#ifndef BITMAP_SCANLINE_UNIT
+#define BITMAP_SCANLINE_UNIT 32
+#endif
+
+#ifndef BITMAP_SCANLINE_PAD
+#define BITMAP_SCANLINE_PAD 32
+#define LOG2_BITMAP_PAD 5
+#define LOG2_BYTES_PER_SCANLINE_PAD 2
+#endif
+
+#include <X11/Xfuncproto.h>
+/*
+ * This returns the number of padding units, for depth d and width w.
+ * For bitmaps this can be calculated with the macros above.
+ * Other depths require either grovelling over the formats field of the
+ * screenInfo or hardwired constants.
+ */
+
+typedef struct _PaddingInfo {
+ int padRoundUp; /* pixels per pad unit - 1 */
+ int padPixelsLog2; /* log 2 (pixels per pad unit) */
+ int padBytesLog2; /* log 2 (bytes per pad unit) */
+ int notPower2; /* bitsPerPixel not a power of 2 */
+ int bytesPerPixel; /* only set when notPower2 is TRUE */
+ int bitsPerPixel; /* bits per pixel */
+} PaddingInfo;
+extern _X_EXPORT PaddingInfo PixmapWidthPaddingInfo[];
+
+/* The only portable way to get the bpp from the depth is to look it up */
+#define BitsPerPixel(d) (PixmapWidthPaddingInfo[d].bitsPerPixel)
+
+#define PixmapWidthInPadUnits(w, d) \
+ (PixmapWidthPaddingInfo[d].notPower2 ? \
+ (((int)(w) * PixmapWidthPaddingInfo[d].bytesPerPixel + \
+ PixmapWidthPaddingInfo[d].bytesPerPixel) >> \
+ PixmapWidthPaddingInfo[d].padBytesLog2) : \
+ ((int)((w) + PixmapWidthPaddingInfo[d].padRoundUp) >> \
+ PixmapWidthPaddingInfo[d].padPixelsLog2))
+
+/*
+ * Return the number of bytes to which a scanline of the given
+ * depth and width will be padded.
+ */
+#define PixmapBytePad(w, d) \
+ (PixmapWidthInPadUnits(w, d) << PixmapWidthPaddingInfo[d].padBytesLog2)
+
+#define BitmapBytePad(w) \
+ (((int)((w) + BITMAP_SCANLINE_PAD - 1) >> LOG2_BITMAP_PAD) << LOG2_BYTES_PER_SCANLINE_PAD)
+
+#define PixmapWidthInPadUnitsProto(w, d) PixmapWidthInPadUnits(w, d)
+#define PixmapBytePadProto(w, d) PixmapBytePad(w, d)
+#define BitmapBytePadProto(w) BitmapBytePad(w)
+
+#endif /* SERVERMD_H */
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