1 dawes 3.0 /* $XFree86$ */
2 /* $XConsortium: iplpixmap.c,v 5.14 94/04/17 20:28:56 dpw Exp $ */
3 /***********************************************************
4
5 Copyright (c) 1987 X Consortium
6
7 Permission is hereby granted, free of charge, to any person obtaining a copy
8 of this software and associated documentation files (the "Software"), to deal
9 in the Software without restriction, including without limitation the rights
10 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 copies of the Software, and to permit persons to whom the Software is
12 furnished to do so, subject to the following conditions:
13
14 The above copyright notice and this permission notice shall be included in
15 all copies or substantial portions of the Software.
16
17 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20 X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 dawes 3.0 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23
24 Except as contained in this notice, the name of the X Consortium shall not be
25 used in advertising or otherwise to promote the sale, use or other dealings
26 in this Software without prior written authorization from the X Consortium.
27
28
29 Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
30
31 All Rights Reserved
32
33 Permission to use, copy, modify, and distribute this software and its
34 documentation for any purpose and without fee is hereby granted,
35 provided that the above copyright notice appear in all copies and that
36 both that copyright notice and this permission notice appear in
37 supporting documentation, and that the name of Digital not be
38 used in advertising or publicity pertaining to distribution of the
39 software without specific, written prior permission.
40
41 DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
42 ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
43 dawes 3.0 DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
44 ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
45 WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
46 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
47 SOFTWARE.
48
49 ******************************************************************/
50 /* pixmap management
51 written by drewry, september 1986
52
53 on a monchrome device, a pixmap is a bitmap.
54 */
55
56 /* Modified nov 94 by Martin Schaller (Martin_Schaller@maus.r.de) for use with
57 interleaved planes */
58
59 #include "Xmd.h"
60 #include "servermd.h"
61 #include "scrnintstr.h"
62 #include "pixmapstr.h"
63 #include "mi.h"
64 dawes 3.0 #include "ipl.h"
65 #include "iplmskbits.h"
66
67 extern unsigned long endtab[];
68
69 PixmapPtr
70 iplCreatePixmap (pScreen, width, height, depth)
71 ScreenPtr pScreen;
72 int width;
73 int height;
74 int depth;
75 {
76 PixmapPtr pPixmap;
77 int datasize;
78 int paddedWidth;
79 int ipad=INTER_PLANES*2 - 1;
80
81 paddedWidth = PixmapBytePad(width, depth);
82 paddedWidth = (paddedWidth + ipad) & ~ipad;
83 datasize = height * paddedWidth;
84 pPixmap = AllocatePixmap(pScreen, datasize);
85 dawes 3.0 if (!pPixmap)
86 return NullPixmap;
87 pPixmap->drawable.type = DRAWABLE_PIXMAP;
88 pPixmap->drawable.class = 0;
89 pPixmap->drawable.pScreen = pScreen;
90 pPixmap->drawable.depth = depth;
91 pPixmap->drawable.bitsPerPixel = BitsPerPixel(depth);
92 pPixmap->drawable.id = 0;
93 pPixmap->drawable.serialNumber = NEXT_SERIAL_NUMBER;
94 pPixmap->drawable.x = 0;
95 pPixmap->drawable.y = 0;
96 pPixmap->drawable.width = width;
97 pPixmap->drawable.height = height;
98 pPixmap->devKind = paddedWidth;
99 pPixmap->refcnt = 1;
100 #ifdef PIXPRIV
101 pPixmap->devPrivate.ptr = datasize ?
102 (pointer)((char *)pPixmap + pScreen->totalPixmapSize) : NULL;
103 #else
104 pPixmap->devPrivate.ptr = (pointer)((long)(pPixmap + 1));
105 #endif
106 dawes 3.0 return pPixmap;
107 }
108
109 Bool
110 iplDestroyPixmap(pPixmap)
111 PixmapPtr pPixmap;
112 {
113 if(--pPixmap->refcnt)
114 return TRUE;
115 xfree(pPixmap);
116 return TRUE;
117 }
118
119 PixmapPtr
120 iplCopyPixmap(pSrc)
121 register PixmapPtr pSrc;
122 {
123 register PixmapPtr pDst;
124 int size;
125 ScreenPtr pScreen;
126
127 dawes 3.0 size = pSrc->drawable.height * pSrc->devKind;
128 pScreen = pSrc->drawable.pScreen;
129 pDst = (*pScreen->CreatePixmap) (pScreen, pSrc->drawable.width,
130 pSrc->drawable.height, pSrc->drawable.depth);
131 if (!pDst)
132 return NullPixmap;
133 memmove((char *)pDst->devPrivate.ptr, (char *)pSrc->devPrivate.ptr, size);
134 return pDst;
135 }
136
137
138 /* replicates a pattern to be a full 32 bits wide.
139 relies on the fact that each scnaline is longword padded.
140 doesn't do anything if pixmap is not a factor osf 32 wide.
141 changes width field of pixmap if successful, so that the fast
142 iplXRotatePixmap code gets used if we rotate the pixmap later.
143 iplYRotatePixmap code gets used if we rotate the pixmap later.
144
145 calculate number of times to repeat
146 for each scanline of pattern
147 zero out area to be filled with replicate
148 dawes 3.0 left shift and or in original as many times as needed
149 */
150
151 void
152 iplPadPixmap(pPixmap)
153 PixmapPtr pPixmap;
154 {
155 register int width = pPixmap->drawable.width;
156 register int h;
157 register unsigned short mask;
158 register unsigned short *p;
159 register unsigned short bits; /* real pattern bits */
160 register int i;
161 int rep; /* repeat count for pattern */
162
163 if (width >= INTER_PGSZ)
164 return;
165
166 rep = INTER_PGSZ/width;
167 /* if (rep*width != INTER_PGSZ)
168 return; */
169 dawes 3.0
170 mask = iplendtab[width];
171
172 p = (unsigned short *)(pPixmap->devPrivate.ptr);
173 for (h=0; h < pPixmap->drawable.height * INTER_PLANES; h++)
174 {
175 *p &= mask;
176 bits = *p ;
177 for(i=1; i<rep; i++)
178 {
179 #if (BITMAP_BIT_ORDER == MSBFirst)
180 bits >>= width;
181 #else
182 bits <<= width;
183 #endif
184 *p |= bits;
185 }
186 p++;
187 }
188 pPixmap->drawable.width = rep*width; /* PGSZ/(pPixmap->drawable.bitsPerPixel); */
189 }
190 dawes 3.0
191
192 #ifdef notdef
193 /*
194 * ipl debugging routine -- assumes pixmap is 1 byte deep
195 */
196 static ipldumppixmap(pPix)
197 PixmapPtr pPix;
198 {
199 unsigned int *pw;
200 char *psrc, *pdst;
201 int i, j;
202 char line[66];
203
204 ErrorF( "pPixmap: 0x%x\n", pPix);
205 ErrorF( "%d wide %d high\n", pPix->drawable.width, pPix->drawable.height);
206 if (pPix->drawable.width > 64)
207 {
208 ErrorF( "too wide to see\n");
209 return;
210 }
211 dawes 3.0
212 pw = (unsigned int *) pPix->devPrivate.ptr;
213 psrc = (char *) pw;
214
215 /*
216 for ( i=0; i<pPix->drawable.height; ++i )
217 ErrorF( "0x%x\n", pw[i] );
218 */
219
220 for ( i = 0; i < pPix->drawable.height; ++i ) {
221 pdst = line;
222 for(j = 0; j < pPix->drawable.width; j++) {
223 *pdst++ = *psrc++ ? 'X' : ' ' ;
224 }
225 *pdst++ = '\n';
226 *pdst++ = '\0';
227 ErrorF( "%s", line);
228 }
229 }
230 #endif /* notdef */
231
232 dawes 3.0 /* Rotates pixmap pPix by w pixels to the right on the screen. Assumes that
233 * words are PGSZ bits wide, and that the least significant bit appears on the
234 * left.
235 */
236 void
237 iplXRotatePixmap(pPix, rw)
238 PixmapPtr pPix;
239 register int rw;
240 {
241 INTER_DECLAREG(*pw);
242 INTER_DECLAREG(*pwFinal);
243 INTER_DECLAREGP(t);
244 int rot;
245
246 if (pPix == NullPixmap)
247 return;
248
249 switch (((DrawablePtr) pPix)->bitsPerPixel) {
250 case INTER_PLANES:
251 break;
252 case 1:
253 dawes 3.0 mfbXRotatePixmap(pPix, rw);
254 return;
255 default:
256 ErrorF("iplXRotatePixmap: unsupported bitsPerPixel %d\n", ((DrawablePtr) pPix)->bitsPerPixel);
257 return;
258 }
259 pw = (unsigned short *)pPix->devPrivate.ptr;
260 modulus (rw, (int) pPix->drawable.width, rot);
261 if(pPix->drawable.width == 16)
262 {
263 pwFinal = pw + pPix->drawable.height * INTER_PLANES;
264 while(pw < pwFinal)
265 {
266 INTER_COPY(pw, t);
267 INTER_MSKINSM(iplendtab[rot], INTER_PPG-rot, t,
268 ~0, rot, t, pw)
269 INTER_NEXT_GROUP(pw);
270 }
271 }
272 else
273 {
274 dawes 3.0 ErrorF("ipl internal error: trying to rotate odd-sized pixmap.\n");
275 #ifdef notdef
276 register unsigned long *pwTmp;
277 int size, tsize;
278
279 tsize = PixmapBytePad(pPix->drawable.width - rot, pPix->drawable.depth);
280 pwTmp = (unsigned long *) ALLOCATE_LOCAL(pPix->drawable.height * tsize);
281 if (!pwTmp)
282 return;
283 /* divide pw (the pixmap) in two vertically at (w - rot) and swap */
284 tsize >>= 2;
285 size = pPix->devKind >> SIZE0F(PixelGroup);
286 iplQuickBlt((long *)pw, (long *)pwTmp,
287 0, 0, 0, 0,
288 (int)pPix->drawable.width - rot, (int)pPix->drawable.height,
289 size, tsize);
290 iplQuickBlt((long *)pw, (long *)pw,
291 (int)pPix->drawable.width - rot, 0, 0, 0,
292 rot, (int)pPix->drawable.height,
293 size, size);
294 iplQuickBlt((long *)pwTmp, (long *)pw,
295 dawes 3.0 0, 0, rot, 0,
296 (int)pPix->drawable.width - rot, (int)pPix->drawable.height,
297 tsize, size);
298 DEALLOCATE_LOCAL(pwTmp);
299 #endif
300 }
301 }
302
303 /* Rotates pixmap pPix by h lines. Assumes that h is always less than
304 pPix->drawable.height
305 works on any width.
306 */
307 void
308 iplYRotatePixmap(pPix, rh)
309 register PixmapPtr pPix;
310 int rh;
311 {
312 int nbyDown; /* bytes to move down to row 0; also offset of
313 row rh */
314 int nbyUp; /* bytes to move up to line rh; also
315 offset of first line moved down to 0 */
316 dawes 3.0 char *pbase;
317 char *ptmp;
318 int rot;
319
320 if (pPix == NullPixmap)
321 return;
322 switch (((DrawablePtr) pPix)->bitsPerPixel) {
323 case INTER_PLANES:
324 break;
325 case 1:
326 mfbYRotatePixmap(pPix, rh);
327 return;
328 default:
329 ErrorF("iplYRotatePixmap: unsupported bitsPerPixel %d\n", ((DrawablePtr) pPix)->bitsPerPixel);
330 return;
331 }
332
333 modulus (rh, (int) pPix->drawable.height, rot);
334 pbase = (char *)pPix->devPrivate.ptr;
335
336 nbyDown = rot * pPix->devKind;
337 dawes 3.0 nbyUp = (pPix->devKind * pPix->drawable.height) - nbyDown;
338 if(!(ptmp = (char *)ALLOCATE_LOCAL(nbyUp)))
339 return;
340
341 memmove(ptmp, pbase, nbyUp); /* save the low rows */
342 memmove(pbase, pbase+nbyUp, nbyDown); /* slide the top rows down */
343 memmove(pbase+nbyDown, ptmp, nbyUp); /* move lower rows up to row rot */
344 DEALLOCATE_LOCAL(ptmp);
345 }
346
347 void
348 iplCopyRotatePixmap(psrcPix, ppdstPix, xrot, yrot)
349 register PixmapPtr psrcPix, *ppdstPix;
350 int xrot, yrot;
351 {
352 register PixmapPtr pdstPix;
353
354 if ((pdstPix = *ppdstPix) &&
355 (pdstPix->devKind == psrcPix->devKind) &&
356 (pdstPix->drawable.height == psrcPix->drawable.height))
357 {
358 dawes 3.0 memmove((char *)pdstPix->devPrivate.ptr,
359 (char *)psrcPix->devPrivate.ptr,
360 psrcPix->drawable.height * psrcPix->devKind);
361 pdstPix->drawable.width = psrcPix->drawable.width;
362 pdstPix->drawable.depth = psrcPix->drawable.depth;
363 pdstPix->drawable.bitsPerPixel = psrcPix->drawable.bitsPerPixel;
364 pdstPix->drawable.serialNumber = NEXT_SERIAL_NUMBER;
365 }
366 else
367 {
368 if (pdstPix)
369 /* FIX XBUG 6168 */
370 (*pdstPix->drawable.pScreen->DestroyPixmap)(pdstPix);
371 *ppdstPix = pdstPix = iplCopyPixmap(psrcPix);
372 if (!pdstPix)
373 return;
374 }
375 iplPadPixmap(pdstPix);
376 if (xrot)
377 iplXRotatePixmap(pdstPix, xrot);
378 if (yrot)
379 dawes 3.0 iplYRotatePixmap(pdstPix, yrot);
380 }
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