1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1991-1997 Søren Schmidt 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer, 12 * in this position and unchanged. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include <sys/cdefs.h> 32 __FBSDID("$FreeBSD$"); 33 34 #include <sys/types.h> 35 #include <signal.h> 36 #include <sys/fbio.h> 37 #include "vgl.h" 38 39 #define min(x, y) (((x) < (y)) ? (x) : (y)) 40 41 static byte mask[8] = {0xff, 0x7f, 0x3f, 0x1f, 0x0f, 0x07, 0x03, 0x01}; 42 static int color2bit[16] = {0x00000000, 0x00000001, 0x00000100, 0x00000101, 43 0x00010000, 0x00010001, 0x00010100, 0x00010101, 44 0x01000000, 0x01000001, 0x01000100, 0x01000101, 45 0x01010000, 0x01010001, 0x01010100, 0x01010101}; 46 47 static void 48 WriteVerticalLine(VGLBitmap *dst, int x, int y, int width, byte *line) 49 { 50 int i, pos, last, planepos, start_offset, end_offset, offset; 51 int len; 52 unsigned int word = 0; 53 byte *address; 54 byte *VGLPlane[4]; 55 56 switch (dst->Type) { 57 case VIDBUF4: 58 case VIDBUF4S: 59 start_offset = (x & 0x07); 60 end_offset = (x + width) & 0x07; 61 i = (width + start_offset) / 8; 62 if (end_offset) 63 i++; 64 VGLPlane[0] = VGLBuf; 65 VGLPlane[1] = VGLPlane[0] + i; 66 VGLPlane[2] = VGLPlane[1] + i; 67 VGLPlane[3] = VGLPlane[2] + i; 68 pos = 0; 69 planepos = 0; 70 last = 8 - start_offset; 71 while (pos < width) { 72 word = 0; 73 while (pos < last && pos < width) 74 word = (word<<1) | color2bit[line[pos++]&0x0f]; 75 VGLPlane[0][planepos] = word; 76 VGLPlane[1][planepos] = word>>8; 77 VGLPlane[2][planepos] = word>>16; 78 VGLPlane[3][planepos] = word>>24; 79 planepos++; 80 last += 8; 81 } 82 planepos--; 83 if (end_offset) { 84 word <<= (8 - end_offset); 85 VGLPlane[0][planepos] = word; 86 VGLPlane[1][planepos] = word>>8; 87 VGLPlane[2][planepos] = word>>16; 88 VGLPlane[3][planepos] = word>>24; 89 } 90 if (start_offset || end_offset) 91 width+=8; 92 width /= 8; 93 outb(0x3ce, 0x01); outb(0x3cf, 0x00); /* set/reset enable */ 94 outb(0x3ce, 0x08); outb(0x3cf, 0xff); /* bit mask */ 95 for (i=0; i<4; i++) { 96 outb(0x3c4, 0x02); 97 outb(0x3c5, 0x01<<i); 98 outb(0x3ce, 0x04); 99 outb(0x3cf, i); 100 pos = VGLAdpInfo.va_line_width*y + x/8; 101 if (dst->Type == VIDBUF4) { 102 if (end_offset) 103 VGLPlane[i][planepos] |= dst->Bitmap[pos+planepos] & mask[end_offset]; 104 if (start_offset) 105 VGLPlane[i][0] |= dst->Bitmap[pos] & ~mask[start_offset]; 106 bcopy(&VGLPlane[i][0], dst->Bitmap + pos, width); 107 } else { /* VIDBUF4S */ 108 if (end_offset) { 109 offset = VGLSetSegment(pos + planepos); 110 VGLPlane[i][planepos] |= dst->Bitmap[offset] & mask[end_offset]; 111 } 112 offset = VGLSetSegment(pos); 113 if (start_offset) 114 VGLPlane[i][0] |= dst->Bitmap[offset] & ~mask[start_offset]; 115 for (last = width; ; ) { 116 len = min(VGLAdpInfo.va_window_size - offset, last); 117 bcopy(&VGLPlane[i][width - last], dst->Bitmap + offset, len); 118 pos += len; 119 last -= len; 120 if (last <= 0) 121 break; 122 offset = VGLSetSegment(pos); 123 } 124 } 125 } 126 break; 127 case VIDBUF8X: 128 address = dst->Bitmap + VGLAdpInfo.va_line_width * y + x/4; 129 for (i=0; i<4; i++) { 130 outb(0x3c4, 0x02); 131 outb(0x3c5, 0x01 << ((x + i)%4)); 132 for (planepos=0, pos=i; pos<width; planepos++, pos+=4) 133 address[planepos] = line[pos]; 134 if ((x + i)%4 == 3) 135 ++address; 136 } 137 break; 138 case VIDBUF8S: 139 case VIDBUF16S: 140 case VIDBUF24S: 141 case VIDBUF32S: 142 width = width * dst->PixelBytes; 143 pos = (dst->VXsize * y + x) * dst->PixelBytes; 144 while (width > 0) { 145 offset = VGLSetSegment(pos); 146 i = min(VGLAdpInfo.va_window_size - offset, width); 147 bcopy(line, dst->Bitmap + offset, i); 148 line += i; 149 pos += i; 150 width -= i; 151 } 152 break; 153 case MEMBUF: 154 case VIDBUF8: 155 case VIDBUF16: 156 case VIDBUF24: 157 case VIDBUF32: 158 address = dst->Bitmap + (dst->VXsize * y + x) * dst->PixelBytes; 159 bcopy(line, address, width * dst->PixelBytes); 160 break; 161 default: 162 ; 163 } 164 } 165 166 int 167 __VGLBitmapCopy(VGLBitmap *src, int srcx, int srcy, 168 VGLBitmap *dst, int dstx, int dsty, int width, int hight) 169 { 170 int srcline, dstline, yend, yextra, ystep; 171 172 if (srcx>src->VXsize || srcy>src->VYsize 173 || dstx>dst->VXsize || dsty>dst->VYsize) 174 return -1; 175 if (srcx < 0) { 176 width=width+srcx; dstx-=srcx; srcx=0; 177 } 178 if (srcy < 0) { 179 hight=hight+srcy; dsty-=srcy; srcy=0; 180 } 181 if (dstx < 0) { 182 width=width+dstx; srcx-=dstx; dstx=0; 183 } 184 if (dsty < 0) { 185 hight=hight+dsty; srcy-=dsty; dsty=0; 186 } 187 if (srcx+width > src->VXsize) 188 width=src->VXsize-srcx; 189 if (srcy+hight > src->VYsize) 190 hight=src->VYsize-srcy; 191 if (dstx+width > dst->VXsize) 192 width=dst->VXsize-dstx; 193 if (dsty+hight > dst->VYsize) 194 hight=dst->VYsize-dsty; 195 if (width < 0 || hight < 0) 196 return -1; 197 yend = srcy + hight; 198 yextra = 0; 199 ystep = 1; 200 if (src->Bitmap == dst->Bitmap && srcy < dsty) { 201 yend = srcy; 202 yextra = hight - 1; 203 ystep = -1; 204 } 205 for (srcline = srcy + yextra, dstline = dsty + yextra; srcline != yend; 206 srcline += ystep, dstline += ystep) { 207 WriteVerticalLine(dst, dstx, dstline, width, 208 src->Bitmap+(srcline*src->VXsize+srcx)*dst->PixelBytes); 209 } 210 return 0; 211 } 212 213 int 214 VGLBitmapCopy(VGLBitmap *src, int srcx, int srcy, 215 VGLBitmap *dst, int dstx, int dsty, int width, int hight) 216 { 217 int error; 218 219 if (src == VGLDisplay) 220 src = &VGLVDisplay; 221 if (src->Type != MEMBUF) 222 return -1; /* invalid */ 223 if (dst == VGLDisplay) { 224 VGLMouseFreeze(dstx, dsty, width, hight, 0); 225 __VGLBitmapCopy(src, srcx, srcy, &VGLVDisplay, dstx, dsty, width, hight); 226 src = &VGLVDisplay; 227 srcx = dstx; 228 srcy = dsty; 229 } else if (dst->Type != MEMBUF) 230 return -1; /* invalid */ 231 error = __VGLBitmapCopy(src, srcx, srcy, dst, dstx, dsty, width, hight); 232 if (dst == VGLDisplay) 233 VGLMouseUnFreeze(); 234 return error; 235 } 236 237 VGLBitmap 238 *VGLBitmapCreate(int type, int xsize, int ysize, byte *bits) 239 { 240 VGLBitmap *object; 241 242 if (type != MEMBUF) 243 return NULL; 244 if (xsize < 0 || ysize < 0) 245 return NULL; 246 object = (VGLBitmap *)malloc(sizeof(*object)); 247 if (object == NULL) 248 return NULL; 249 object->Type = type; 250 object->Xsize = xsize; 251 object->Ysize = ysize; 252 object->VXsize = xsize; 253 object->VYsize = ysize; 254 object->Xorigin = 0; 255 object->Yorigin = 0; 256 object->Bitmap = bits; 257 object->PixelBytes = VGLDisplay->PixelBytes; 258 return object; 259 } 260 261 void 262 VGLBitmapDestroy(VGLBitmap *object) 263 { 264 if (object->Bitmap) 265 free(object->Bitmap); 266 free(object); 267 } 268 269 int 270 VGLBitmapAllocateBits(VGLBitmap *object) 271 { 272 object->Bitmap = malloc(object->VXsize*object->VYsize*object->PixelBytes); 273 if (object->Bitmap == NULL) 274 return -1; 275 return 0; 276 } 277