servermd.h revision 4202a189 
1/***********************************************************
2
3Copyright 1987, 1998  The Open Group
4
5Permission to use, copy, modify, distribute, and sell this software and its
6documentation for any purpose is hereby granted without fee, provided that
7the above copyright notice appear in all copies and that both that
8copyright notice and this permission notice appear in supporting
9documentation.
10
11The above copyright notice and this permission notice shall be included in
12all copies or substantial portions of the Software.
13
14THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
17OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
18AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
19CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
20
21Except as contained in this notice, the name of The Open Group shall not be
22used in advertising or otherwise to promote the sale, use or other dealings
23in this Software without prior written authorization from The Open Group.
24
25
26Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
27
28                        All Rights Reserved
29
30Permission to use, copy, modify, and distribute this software and its
31documentation for any purpose and without fee is hereby granted,
32provided that the above copyright notice appear in all copies and that
33both that copyright notice and this permission notice appear in
34supporting documentation, and that the name of Digital not be
35used in advertising or publicity pertaining to distribution of the
36software without specific, written prior permission.
37
38DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
39ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
40DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
41ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
42WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
43ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
44SOFTWARE.
45
46******************************************************************/
47
48#ifndef SERVERMD_H
49#define SERVERMD_H 1
50
51/*
52 * Note: much of this is vestigial from mfb/cfb times.  This should
53 * really be simplified even further.
54 */
55
56/*
57 * Machine dependent values:
58 * GLYPHPADBYTES should be chosen with consideration for the space-time
59 * trade-off.  Padding to 0 bytes means that there is no wasted space
60 * in the font bitmaps (both on disk and in memory), but that access of
61 * the bitmaps will cause odd-address memory references.  Padding to
62 * 2 bytes would ensure even address memory references and would
63 * be suitable for a 68010-class machine, but at the expense of wasted
64 * space in the font bitmaps.  Padding to 4 bytes would be good
65 * for real 32 bit machines, etc.  Be sure that you tell the font
66 * compiler what kind of padding you want because its defines are
67 * kept separate from this.  See server/include/font.h for how
68 * GLYPHPADBYTES is used.
69 */
70
71#if defined(vax) || defined(__vax__)
72#define IMAGE_BYTE_ORDER	LSBFirst        /* Values for the VAX only */
73#define BITMAP_BIT_ORDER	LSBFirst
74#define	GLYPHPADBYTES		4
75#define GETLEFTBITS_ALIGNMENT	1
76#define FAST_UNALIGNED_READS
77#endif /* __vax__ */
78
79#ifdef __avr32__
80#define IMAGE_BYTE_ORDER        MSBFirst
81#define BITMAP_BIT_ORDER        MSBFirst
82#define GLYPHPADBYTES           4
83
84#endif /* __avr32__ */
85
86/* XXX arm is not always LE */
87#if defined(__arm32__) || defined(__arm__)
88
89#define IMAGE_BYTE_ORDER        LSBFirst
90#define BITMAP_BIT_ORDER        LSBFirst
91#define GLYPHPADBYTES           4
92
93#endif /* __arm32__ */
94
95#if defined __hppa__
96
97#define IMAGE_BYTE_ORDER	MSBFirst
98#define BITMAP_BIT_ORDER	MSBFirst
99#define GLYPHPADBYTES		4	/* to make fb work */
100					/* byte boundries */
101#endif /* hpux || __hppa__ */
102
103#if defined(__powerpc__) || defined(__ppc__) || defined(__ppc64__)
104
105#define IMAGE_BYTE_ORDER        MSBFirst
106#define BITMAP_BIT_ORDER        MSBFirst
107#define GLYPHPADBYTES           4
108
109#endif /* PowerPC */
110
111#if defined(__sh__)
112
113#if defined(__BIG_ENDIAN__)
114# define IMAGE_BYTE_ORDER	MSBFirst
115# define BITMAP_BIT_ORDER	MSBFirst
116# define GLYPHPADBYTES		4
117#else
118# define IMAGE_BYTE_ORDER	LSBFirst
119# define BITMAP_BIT_ORDER	LSBFirst
120# define GLYPHPADBYTES		4
121#endif
122
123#endif /* SuperH */
124
125#if defined(__m32r__)
126
127#if defined(__BIG_ENDIAN__)
128# define IMAGE_BYTE_ORDER      MSBFirst
129# define BITMAP_BIT_ORDER      MSBFirst
130# define GLYPHPADBYTES         4
131#else
132# define IMAGE_BYTE_ORDER      LSBFirst
133# define BITMAP_BIT_ORDER      LSBFirst
134# define GLYPHPADBYTES         4
135#endif
136
137#endif /* __m32r__ */
138
139#if (defined(sun) && (defined(__sparc) || defined(sparc))) || \
140    (defined(__uxp__) && (defined(sparc) || defined(mc68000))) || \
141    defined(__sparc__) || defined(__mc68000__)
142
143#if defined(__sparc) || defined(__sparc__)
144# if !defined(sparc)
145#  define sparc 1
146# endif
147#endif
148
149#if defined(sun386) || defined(sun5)
150# define IMAGE_BYTE_ORDER	LSBFirst        /* Values for the SUN only */
151# define BITMAP_BIT_ORDER	LSBFirst
152#else
153# define IMAGE_BYTE_ORDER	MSBFirst        /* Values for the SUN only */
154# define BITMAP_BIT_ORDER	MSBFirst
155#endif
156
157#define	GLYPHPADBYTES		4
158
159#endif /* sun && !(i386 && SVR4) */
160
161
162#if defined(ibm032) || defined (ibm)
163
164#ifdef __i386__
165# define IMAGE_BYTE_ORDER	LSBFirst	/* Value for PS/2 only */
166#else
167# define IMAGE_BYTE_ORDER	MSBFirst        /* Values for the RT only*/
168#endif
169#define BITMAP_BIT_ORDER	MSBFirst
170#define	GLYPHPADBYTES		1
171/* ibm pcc doesn't understand pragmas. */
172
173#ifdef __i386__
174#define BITMAP_SCANLINE_UNIT	8
175#endif
176
177#endif /* ibm */
178
179#if (defined(mips) || defined(__mips))
180
181#if defined(MIPSEL) || defined(__MIPSEL__)
182# define IMAGE_BYTE_ORDER	LSBFirst        /* Values for the PMAX only */
183# define BITMAP_BIT_ORDER	LSBFirst
184# define GLYPHPADBYTES		4
185#else
186# define IMAGE_BYTE_ORDER	MSBFirst        /* Values for the MIPS only */
187# define BITMAP_BIT_ORDER	MSBFirst
188# define GLYPHPADBYTES		4
189#endif
190
191#endif /* mips */
192
193#if defined(__alpha) || defined(__alpha__)
194# define IMAGE_BYTE_ORDER	LSBFirst	/* Values for the Alpha only */
195# define BITMAP_BIT_ORDER       LSBFirst
196# define GLYPHPADBYTES		4
197
198#endif /* alpha */
199
200#if defined (linux) && defined (__s390__)
201
202#define IMAGE_BYTE_ORDER      	MSBFirst
203#define BITMAP_BIT_ORDER      	MSBFirst
204#define GLYPHPADBYTES         	4
205
206#define BITMAP_SCANLINE_UNIT	8
207#define FAST_UNALIGNED_READ
208
209#endif /* linux/s390 */
210
211#if defined (linux) && defined (__s390x__)
212
213#define IMAGE_BYTE_ORDER       MSBFirst
214#define BITMAP_BIT_ORDER       MSBFirst
215#define GLYPHPADBYTES          4
216
217#define BITMAP_SCANLINE_UNIT	8
218#define FAST_UNALIGNED_READ
219
220#endif /* linux/s390x */
221
222
223#if defined(__ia64__) || defined(ia64)
224
225# define IMAGE_BYTE_ORDER	LSBFirst
226# define BITMAP_BIT_ORDER       LSBFirst
227# define GLYPHPADBYTES		4
228
229#endif /* ia64 */
230
231#if defined(__amd64__) || defined(amd64) || defined(__amd64)
232# define IMAGE_BYTE_ORDER	LSBFirst
233# define BITMAP_BIT_ORDER       LSBFirst
234# define GLYPHPADBYTES		4
235/* ???? */
236#endif /* AMD64 */
237
238#if	defined(SVR4) && (defined(__i386__) || defined(__i386) ) ||	\
239	defined(__alpha__) || defined(__alpha) || \
240	defined(__i386__) || \
241	defined(__s390x__) || defined(__s390__)
242
243#ifndef IMAGE_BYTE_ORDER
244#define IMAGE_BYTE_ORDER	LSBFirst
245#endif
246
247#ifndef BITMAP_BIT_ORDER
248# define BITMAP_BIT_ORDER      LSBFirst
249#endif
250
251#ifndef GLYPHPADBYTES
252#define GLYPHPADBYTES           4
253#endif
254
255#endif /* SVR4 / BSD / i386 */
256
257#if defined (linux) && defined (__mc68000__)
258
259#define IMAGE_BYTE_ORDER       MSBFirst
260#define BITMAP_BIT_ORDER       MSBFirst
261#define GLYPHPADBYTES          4
262
263#endif /* linux/m68k */
264
265
266/* linux on ARM */
267#if defined(linux) && defined(__arm__)
268#define IMAGE_BYTE_ORDER	LSBFirst
269#define BITMAP_BIT_ORDER	LSBFirst
270#define GLYPHPADBYTES		4
271#endif
272
273/* linux on IBM S/390 */
274#if defined (linux) && defined (__s390__)
275#define IMAGE_BYTE_ORDER	MSBFirst
276#define BITMAP_BIT_ORDER	MSBFirst
277#define GLYPHPADBYTES		4
278#endif /* linux/s390 */
279
280/* size of buffer to use with GetImage, measured in bytes. There's obviously
281 * a trade-off between the amount of heap used and the number of times the
282 * ddx routine has to be called.
283 */
284#ifndef IMAGE_BUFSIZE
285#define IMAGE_BUFSIZE		(64*1024)
286#endif
287
288/* pad scanline to a longword */
289#ifndef BITMAP_SCANLINE_UNIT
290#define BITMAP_SCANLINE_UNIT	32
291#endif
292
293#ifndef BITMAP_SCANLINE_PAD
294#define BITMAP_SCANLINE_PAD  32
295#define LOG2_BITMAP_PAD		5
296#define LOG2_BYTES_PER_SCANLINE_PAD	2
297#endif
298
299#include <X11/Xfuncproto.h>
300/*
301 *   This returns the number of padding units, for depth d and width w.
302 * For bitmaps this can be calculated with the macros above.
303 * Other depths require either grovelling over the formats field of the
304 * screenInfo or hardwired constants.
305 */
306
307typedef struct _PaddingInfo {
308	int     padRoundUp;	/* pixels per pad unit - 1 */
309	int	padPixelsLog2;	/* log 2 (pixels per pad unit) */
310	int     padBytesLog2;	/* log 2 (bytes per pad unit) */
311	int	notPower2;	/* bitsPerPixel not a power of 2 */
312	int	bytesPerPixel;	/* only set when notPower2 is TRUE */
313	int	bitsPerPixel;	/* bits per pixel */
314} PaddingInfo;
315extern _X_EXPORT PaddingInfo PixmapWidthPaddingInfo[];
316
317/* The only portable way to get the bpp from the depth is to look it up */
318#define BitsPerPixel(d) (PixmapWidthPaddingInfo[d].bitsPerPixel)
319
320#define PixmapWidthInPadUnits(w, d) \
321    (PixmapWidthPaddingInfo[d].notPower2 ? \
322    (((int)(w) * PixmapWidthPaddingInfo[d].bytesPerPixel +  \
323	         PixmapWidthPaddingInfo[d].bytesPerPixel) >> \
324	PixmapWidthPaddingInfo[d].padBytesLog2) : \
325    ((int)((w) + PixmapWidthPaddingInfo[d].padRoundUp) >> \
326	PixmapWidthPaddingInfo[d].padPixelsLog2))
327
328/*
329 *	Return the number of bytes to which a scanline of the given
330 * depth and width will be padded.
331 */
332#define PixmapBytePad(w, d) \
333    (PixmapWidthInPadUnits(w, d) << PixmapWidthPaddingInfo[d].padBytesLog2)
334
335#define BitmapBytePad(w) \
336    (((int)((w) + BITMAP_SCANLINE_PAD - 1) >> LOG2_BITMAP_PAD) << LOG2_BYTES_PER_SCANLINE_PAD)
337
338#define PixmapWidthInPadUnitsProto(w, d) PixmapWidthInPadUnits(w, d)
339#define PixmapBytePadProto(w, d) PixmapBytePad(w, d)
340#define BitmapBytePadProto(w) BitmapBytePad(w)
341
342#endif /* SERVERMD_H */
343