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