2 * Copyright (c) 1991-1997 Søren Schmidt
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer,
10 * in this position and unchanged.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software withough specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 #include <sys/types.h>
36 #define min(x, y) (((x) < (y)) ? (x) : (y))
38 static byte mask[8] = {0xff, 0x7f, 0x3f, 0x1f, 0x0f, 0x07, 0x03, 0x01};
39 static int color2bit[16] = {0x00000000, 0x00000001, 0x00000100, 0x00000101,
40 0x00010000, 0x00010001, 0x00010100, 0x00010101,
41 0x01000000, 0x01000001, 0x01000100, 0x01000101,
42 0x01010000, 0x01010001, 0x01010100, 0x01010101};
45 WriteVerticalLine(VGLBitmap *dst, int x, int y, int width, byte *line)
47 int i, pos, last, planepos, start_offset, end_offset, offset;
49 unsigned int word = 0;
56 start_offset = (x & 0x07);
57 end_offset = (x + width) & 0x07;
58 i = (width + start_offset) / 8;
62 VGLPlane[1] = VGLPlane[0] + i;
63 VGLPlane[2] = VGLPlane[1] + i;
64 VGLPlane[3] = VGLPlane[2] + i;
67 last = 8 - start_offset;
70 while (pos < last && pos < width)
71 word = (word<<1) | color2bit[line[pos++]&0x0f];
72 VGLPlane[0][planepos] = word;
73 VGLPlane[1][planepos] = word>>8;
74 VGLPlane[2][planepos] = word>>16;
75 VGLPlane[3][planepos] = word>>24;
81 word <<= (8 - end_offset);
82 VGLPlane[0][planepos] = word;
83 VGLPlane[1][planepos] = word>>8;
84 VGLPlane[2][planepos] = word>>16;
85 VGLPlane[3][planepos] = word>>24;
87 if (start_offset || end_offset)
90 outb(0x3ce, 0x01); outb(0x3cf, 0x00); /* set/reset enable */
91 outb(0x3ce, 0x08); outb(0x3cf, 0xff); /* bit mask */
97 pos = VGLAdpInfo.va_line_width*y + x/8;
98 if (dst->Type == VIDBUF4) {
100 VGLPlane[i][planepos] |= dst->Bitmap[pos+planepos] & mask[end_offset];
102 VGLPlane[i][0] |= dst->Bitmap[pos] & ~mask[start_offset];
103 bcopy(&VGLPlane[i][0], dst->Bitmap + pos, width);
104 } else { /* VIDBUF4S */
106 offset = VGLSetSegment(pos + planepos);
107 VGLPlane[i][planepos] |= dst->Bitmap[offset] & mask[end_offset];
109 offset = VGLSetSegment(pos);
111 VGLPlane[i][0] |= dst->Bitmap[offset] & ~mask[start_offset];
112 for (last = width; ; ) {
113 len = min(VGLAdpInfo.va_window_size - offset, last);
114 bcopy(&VGLPlane[i][width - last], dst->Bitmap + offset, len);
119 offset = VGLSetSegment(pos);
125 address = dst->Bitmap + VGLAdpInfo.va_line_width * y + x/4;
126 for (i=0; i<4; i++) {
128 outb(0x3c5, 0x01 << ((x + i)%4));
129 for (planepos=0, pos=i; pos<width; planepos++, pos+=4)
130 address[planepos] = line[pos];
136 pos = dst->VXsize * y + x;
138 offset = VGLSetSegment(pos);
139 i = min(VGLAdpInfo.va_window_size - offset, width);
140 bcopy(line, dst->Bitmap + offset, i);
149 width = width * dst->PixelBytes;
150 pos = (dst->VXsize * y + x) * dst->PixelBytes;
152 offset = VGLSetSegment(pos);
153 i = min(VGLAdpInfo.va_window_size - offset, width);
154 bcopy(line, dst->Bitmap + offset, i);
162 address = dst->Bitmap + dst->VXsize * y + x;
163 bcopy(line, address, width);
168 address = dst->Bitmap + (dst->VXsize * y + x) * dst->PixelBytes;
169 bcopy(line, address, width * dst->PixelBytes);
176 ReadVerticalLine(VGLBitmap *src, int x, int y, int width, byte *line)
178 int i, bit, pos, count, planepos, start_offset, end_offset, offset;
185 start_offset = (x & 0x07);
186 end_offset = (x + width) & 0x07;
187 count = (width + start_offset) / 8;
190 VGLPlane[0] = VGLBuf;
191 VGLPlane[1] = VGLPlane[0] + count;
192 VGLPlane[2] = VGLPlane[1] + count;
193 VGLPlane[3] = VGLPlane[2] + count;
194 for (i=0; i<4; i++) {
197 pos = VGLAdpInfo.va_line_width*y + x/8;
198 for (width2 = count; width2 > 0; ) {
199 offset = VGLSetSegment(pos);
200 len = min(VGLAdpInfo.va_window_size - offset, width2);
201 bcopy(src->Bitmap + offset, &VGLPlane[i][count - width2], len);
208 address = src->Bitmap + VGLAdpInfo.va_line_width * y + x/8;
209 start_offset = (x & 0x07);
210 end_offset = (x + width) & 0x07;
211 count = (width + start_offset) / 8;
214 VGLPlane[0] = VGLBuf;
215 VGLPlane[1] = VGLPlane[0] + count;
216 VGLPlane[2] = VGLPlane[1] + count;
217 VGLPlane[3] = VGLPlane[2] + count;
218 for (i=0; i<4; i++) {
221 bcopy(address, &VGLPlane[i][0], count);
226 bit = 7 - start_offset;
227 while (pos < width) {
228 for (; bit >= 0 && pos < width; bit--, pos++) {
229 line[pos] = (VGLPlane[0][planepos] & (1<<bit) ? 1 : 0) |
230 ((VGLPlane[1][planepos] & (1<<bit) ? 1 : 0) << 1) |
231 ((VGLPlane[2][planepos] & (1<<bit) ? 1 : 0) << 2) |
232 ((VGLPlane[3][planepos] & (1<<bit) ? 1 : 0) << 3);
239 address = src->Bitmap + VGLAdpInfo.va_line_width * y + x/4;
240 for (i=0; i<4; i++) {
242 outb(0x3cf, (x + i)%4);
243 for (planepos=0, pos=i; pos<width; planepos++, pos+=4)
244 line[pos] = address[planepos];
250 pos = src->VXsize * y + x;
252 offset = VGLSetSegment(pos);
253 i = min(VGLAdpInfo.va_window_size - offset, width);
254 bcopy(src->Bitmap + offset, line, i);
263 width = width * src->PixelBytes;
264 pos = (src->VXsize * y + x) * src->PixelBytes;
266 offset = VGLSetSegment(pos);
267 i = min(VGLAdpInfo.va_window_size - offset, width);
268 bcopy(src->Bitmap + offset, line, i);
276 address = src->Bitmap + src->VXsize * y + x;
277 bcopy(address, line, width);
282 address = src->Bitmap + (src->VXsize * y + x) * src->PixelBytes;
283 bcopy(address, line, width * src->PixelBytes);
290 __VGLBitmapCopy(VGLBitmap *src, int srcx, int srcy,
291 VGLBitmap *dst, int dstx, int dsty, int width, int hight)
293 int srcline, dstline;
295 if (srcx>src->VXsize || srcy>src->VYsize
296 || dstx>dst->VXsize || dsty>dst->VYsize)
299 width=width+srcx; dstx-=srcx; srcx=0;
302 hight=hight+srcy; dsty-=srcy; srcy=0;
305 width=width+dstx; srcx-=dstx; dstx=0;
308 hight=hight+dsty; srcy-=dsty; dsty=0;
310 if (srcx+width > src->VXsize)
311 width=src->VXsize-srcx;
312 if (srcy+hight > src->VYsize)
313 hight=src->VYsize-srcy;
314 if (dstx+width > dst->VXsize)
315 width=dst->VXsize-dstx;
316 if (dsty+hight > dst->VYsize)
317 hight=dst->VYsize-dsty;
318 if (width < 0 || hight < 0)
320 if (src->Type == MEMBUF) {
321 for (srcline=srcy, dstline=dsty; srcline<srcy+hight; srcline++, dstline++) {
322 WriteVerticalLine(dst, dstx, dstline, width,
323 (src->Bitmap+(srcline*src->VXsize)+srcx));
326 else if (dst->Type == MEMBUF) {
327 for (srcline=srcy, dstline=dsty; srcline<srcy+hight; srcline++, dstline++) {
328 ReadVerticalLine(src, srcx, srcline, width,
329 (dst->Bitmap+(dstline*dst->VXsize)+dstx));
333 byte buffer[2048]; /* XXX */
336 if (width > sizeof(buffer)) {
343 for (srcline=srcy, dstline=dsty; srcline<srcy+hight; srcline++, dstline++) {
344 ReadVerticalLine(src, srcx, srcline, width, p);
345 WriteVerticalLine(dst, dstx, dstline, width, p);
347 if (width > sizeof(buffer))
354 VGLBitmapCopy(VGLBitmap *src, int srcx, int srcy,
355 VGLBitmap *dst, int dstx, int dsty, int width, int hight)
359 VGLMouseFreeze(dstx, dsty, width, hight, 0);
360 error = __VGLBitmapCopy(src, srcx, srcy, dst, dstx, dsty, width, hight);
366 *VGLBitmapCreate(int type, int xsize, int ysize, byte *bits)
372 if (xsize < 0 || ysize < 0)
374 object = (VGLBitmap *)malloc(sizeof(*object));
378 object->Xsize = xsize;
379 object->Ysize = ysize;
380 object->VXsize = xsize;
381 object->VYsize = ysize;
384 object->Bitmap = bits;
389 VGLBitmapDestroy(VGLBitmap *object)
392 free(object->Bitmap);
397 VGLBitmapAllocateBits(VGLBitmap *object)
399 object->Bitmap = (byte *)malloc(object->VXsize*object->VYsize);
400 if (object->Bitmap == NULL)