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 without 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.
28 * $FreeBSD: src/lib/libvgl/bitmap.c,v 1.4 1999/11/08 11:37:39 yokota Exp $
29 * $DragonFly: src/lib/libvgl/bitmap.c,v 1.3 2004/06/19 18:55:47 joerg Exp $
32 #include <sys/types.h>
34 #include <machine/console.h>
37 #define min(x, y) (((x) < (y)) ? (x) : (y))
39 static byte mask[8] = {0xff, 0x7f, 0x3f, 0x1f, 0x0f, 0x07, 0x03, 0x01};
40 static int color2bit[16] = {0x00000000, 0x00000001, 0x00000100, 0x00000101,
41 0x00010000, 0x00010001, 0x00010100, 0x00010101,
42 0x01000000, 0x01000001, 0x01000100, 0x01000101,
43 0x01010000, 0x01010001, 0x01010100, 0x01010101};
46 WriteVerticalLine(VGLBitmap *dst, int x, int y, int width, byte *line)
48 int i, pos, last, planepos, start_offset, end_offset, offset;
50 unsigned int word = 0;
57 start_offset = (x & 0x07);
58 end_offset = (x + width) & 0x07;
59 i = (width + start_offset) / 8;
63 VGLPlane[1] = VGLPlane[0] + i;
64 VGLPlane[2] = VGLPlane[1] + i;
65 VGLPlane[3] = VGLPlane[2] + i;
68 last = 8 - start_offset;
71 while (pos < last && pos < width)
72 word = (word<<1) | color2bit[line[pos++]&0x0f];
73 VGLPlane[0][planepos] = word;
74 VGLPlane[1][planepos] = word>>8;
75 VGLPlane[2][planepos] = word>>16;
76 VGLPlane[3][planepos] = word>>24;
82 word <<= (8 - end_offset);
83 VGLPlane[0][planepos] = word;
84 VGLPlane[1][planepos] = word>>8;
85 VGLPlane[2][planepos] = word>>16;
86 VGLPlane[3][planepos] = word>>24;
88 if (start_offset || end_offset)
91 outb(0x3ce, 0x01); outb(0x3cf, 0x00); /* set/reset enable */
92 outb(0x3ce, 0x08); outb(0x3cf, 0xff); /* bit mask */
98 pos = VGLAdpInfo.va_line_width*y + x/8;
99 if (dst->Type == VIDBUF4) {
101 VGLPlane[i][planepos] |= dst->Bitmap[pos+planepos] & mask[end_offset];
103 VGLPlane[i][0] |= dst->Bitmap[pos] & ~mask[start_offset];
104 bcopy(&VGLPlane[i][0], dst->Bitmap + pos, width);
105 } else { /* VIDBUF4S */
107 offset = VGLSetSegment(pos + planepos);
108 VGLPlane[i][planepos] |= dst->Bitmap[offset] & mask[end_offset];
110 offset = VGLSetSegment(pos);
112 VGLPlane[i][0] |= dst->Bitmap[offset] & ~mask[start_offset];
113 for (last = width; ; ) {
114 len = min(VGLAdpInfo.va_window_size - offset, last);
115 bcopy(&VGLPlane[i][width - last], dst->Bitmap + offset, len);
120 offset = VGLSetSegment(pos);
126 address = dst->Bitmap + VGLAdpInfo.va_line_width * y + x/4;
127 for (i=0; i<4; i++) {
129 outb(0x3c5, 0x01 << ((x + i)%4));
130 for (planepos=0, pos=i; pos<width; planepos++, pos+=4)
131 address[planepos] = line[pos];
137 pos = dst->VXsize * y + x;
139 offset = VGLSetSegment(pos);
140 i = min(VGLAdpInfo.va_window_size - offset, width);
141 bcopy(line, dst->Bitmap + offset, i);
149 address = dst->Bitmap + dst->VXsize * y + x;
150 bcopy(line, address, width);
159 ReadVerticalLine(VGLBitmap *src, int x, int y, int width, byte *line)
161 int i, bit, pos, count, planepos, start_offset, end_offset, offset;
168 start_offset = (x & 0x07);
169 end_offset = (x + width) & 0x07;
170 count = (width + start_offset) / 8;
173 VGLPlane[0] = VGLBuf;
174 VGLPlane[1] = VGLPlane[0] + count;
175 VGLPlane[2] = VGLPlane[1] + count;
176 VGLPlane[3] = VGLPlane[2] + count;
177 for (i=0; i<4; i++) {
180 pos = VGLAdpInfo.va_line_width*y + x/8;
181 for (width2 = count; width2 > 0; ) {
182 offset = VGLSetSegment(pos);
183 len = min(VGLAdpInfo.va_window_size - offset, width2);
184 bcopy(src->Bitmap + offset, &VGLPlane[i][count - width2], len);
191 address = src->Bitmap + VGLAdpInfo.va_line_width * y + x/8;
192 start_offset = (x & 0x07);
193 end_offset = (x + width) & 0x07;
194 count = (width + start_offset) / 8;
197 VGLPlane[0] = VGLBuf;
198 VGLPlane[1] = VGLPlane[0] + count;
199 VGLPlane[2] = VGLPlane[1] + count;
200 VGLPlane[3] = VGLPlane[2] + count;
201 for (i=0; i<4; i++) {
204 bcopy(address, &VGLPlane[i][0], count);
209 bit = 7 - start_offset;
210 while (pos < width) {
211 for (; bit >= 0 && pos < width; bit--, pos++) {
212 line[pos] = (VGLPlane[0][planepos] & (1<<bit) ? 1 : 0) |
213 ((VGLPlane[1][planepos] & (1<<bit) ? 1 : 0) << 1) |
214 ((VGLPlane[2][planepos] & (1<<bit) ? 1 : 0) << 2) |
215 ((VGLPlane[3][planepos] & (1<<bit) ? 1 : 0) << 3);
222 address = src->Bitmap + VGLAdpInfo.va_line_width * y + x/4;
223 for (i=0; i<4; i++) {
225 outb(0x3cf, (x + i)%4);
226 for (planepos=0, pos=i; pos<width; planepos++, pos+=4)
227 line[pos] = address[planepos];
233 pos = src->VXsize * y + x;
235 offset = VGLSetSegment(pos);
236 i = min(VGLAdpInfo.va_window_size - offset, width);
237 bcopy(src->Bitmap + offset, line, i);
245 address = src->Bitmap + src->VXsize * y + x;
246 bcopy(address, line, width);
254 __VGLBitmapCopy(VGLBitmap *src, int srcx, int srcy,
255 VGLBitmap *dst, int dstx, int dsty, int width, int hight)
257 int srcline, dstline;
259 if (srcx>src->VXsize || srcy>src->VYsize
260 || dstx>dst->VXsize || dsty>dst->VYsize)
263 width=width+srcx; dstx-=srcx; srcx=0;
266 hight=hight+srcy; dsty-=srcy; srcy=0;
269 width=width+dstx; srcx-=dstx; dstx=0;
272 hight=hight+dsty; srcy-=dsty; dsty=0;
274 if (srcx+width > src->VXsize)
275 width=src->VXsize-srcx;
276 if (srcy+hight > src->VYsize)
277 hight=src->VYsize-srcy;
278 if (dstx+width > dst->VXsize)
279 width=dst->VXsize-dstx;
280 if (dsty+hight > dst->VYsize)
281 hight=dst->VYsize-dsty;
282 if (width < 0 || hight < 0)
284 if (src->Type == MEMBUF) {
285 for (srcline=srcy, dstline=dsty; srcline<srcy+hight; srcline++, dstline++) {
286 WriteVerticalLine(dst, dstx, dstline, width,
287 (src->Bitmap+(srcline*src->VXsize)+srcx));
290 else if (dst->Type == MEMBUF) {
291 for (srcline=srcy, dstline=dsty; srcline<srcy+hight; srcline++, dstline++) {
292 ReadVerticalLine(src, srcx, srcline, width,
293 (dst->Bitmap+(dstline*dst->VXsize)+dstx));
297 byte buffer[2048]; /* XXX */
300 if (width > sizeof(buffer)) {
307 for (srcline=srcy, dstline=dsty; srcline<srcy+hight; srcline++, dstline++) {
308 ReadVerticalLine(src, srcx, srcline, width, p);
309 WriteVerticalLine(dst, dstx, dstline, width, p);
311 if (width > sizeof(buffer))
318 VGLBitmapCopy(VGLBitmap *src, int srcx, int srcy,
319 VGLBitmap *dst, int dstx, int dsty, int width, int hight)
323 VGLMouseFreeze(dstx, dsty, width, hight, 0);
324 error = __VGLBitmapCopy(src, srcx, srcy, dst, dstx, dsty, width, hight);
330 *VGLBitmapCreate(int type, int xsize, int ysize, byte *bits)
336 if (xsize < 0 || ysize < 0)
338 object = (VGLBitmap *)malloc(sizeof(*object));
342 object->Xsize = xsize;
343 object->Ysize = ysize;
344 object->VXsize = xsize;
345 object->VYsize = ysize;
348 object->Bitmap = bits;
353 VGLBitmapDestroy(VGLBitmap *object)
356 free(object->Bitmap);
361 VGLBitmapAllocateBits(VGLBitmap *object)
363 object->Bitmap = (byte *)malloc(object->VXsize*object->VYsize);
364 if (object->Bitmap == NULL)