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 byte *buffer, *p; 171 int mousemerge, srcline, dstline, yend, yextra, ystep; 172 173 mousemerge = 0; 174 if (hight < 0) { 175 hight = -hight; 176 mousemerge = (dst == VGLDisplay && 177 VGLMouseOverlap(dstx, dsty, width, hight)); 178 if (mousemerge) 179 buffer = alloca(width*src->PixelBytes); 180 } 181 if (srcx>src->VXsize || srcy>src->VYsize 182 || dstx>dst->VXsize || dsty>dst->VYsize) 183 return -1; 184 if (srcx < 0) { 185 width=width+srcx; dstx-=srcx; srcx=0; 186 } 187 if (srcy < 0) { 188 hight=hight+srcy; dsty-=srcy; srcy=0; 189 } 190 if (dstx < 0) { 191 width=width+dstx; srcx-=dstx; dstx=0; 192 } 193 if (dsty < 0) { 194 hight=hight+dsty; srcy-=dsty; dsty=0; 195 } 196 if (srcx+width > src->VXsize) 197 width=src->VXsize-srcx; 198 if (srcy+hight > src->VYsize) 199 hight=src->VYsize-srcy; 200 if (dstx+width > dst->VXsize) 201 width=dst->VXsize-dstx; 202 if (dsty+hight > dst->VYsize) 203 hight=dst->VYsize-dsty; 204 if (width < 0 || hight < 0) 205 return -1; 206 yend = srcy + hight; 207 yextra = 0; 208 ystep = 1; 209 if (src->Bitmap == dst->Bitmap && srcy < dsty) { 210 yend = srcy - 1; 211 yextra = hight - 1; 212 ystep = -1; 213 } 214 for (srcline = srcy + yextra, dstline = dsty + yextra; srcline != yend; 215 srcline += ystep, dstline += ystep) { 216 p = src->Bitmap+(srcline*src->VXsize+srcx)*dst->PixelBytes; 217 if (mousemerge && VGLMouseOverlap(dstx, dstline, width, 1)) { 218 bcopy(p, buffer, width*src->PixelBytes); 219 p = buffer; 220 VGLMouseMerge(dstx, dstline, width, p); 221 } 222 WriteVerticalLine(dst, dstx, dstline, width, p); 223 } 224 return 0; 225 } 226 227 int 228 VGLBitmapCopy(VGLBitmap *src, int srcx, int srcy, 229 VGLBitmap *dst, int dstx, int dsty, int width, int hight) 230 { 231 int error; 232 233 if (hight < 0) 234 return -1; 235 if (src == VGLDisplay) 236 src = &VGLVDisplay; 237 if (src->Type != MEMBUF) 238 return -1; /* invalid */ 239 if (dst == VGLDisplay) { 240 VGLMouseFreeze(); 241 __VGLBitmapCopy(src, srcx, srcy, &VGLVDisplay, dstx, dsty, width, hight); 242 error = __VGLBitmapCopy(src, srcx, srcy, &VGLVDisplay, dstx, dsty, 243 width, hight); 244 if (error != 0) 245 return error; 246 src = &VGLVDisplay; 247 srcx = dstx; 248 srcy = dsty; 249 } else if (dst->Type != MEMBUF) 250 return -1; /* invalid */ 251 error = __VGLBitmapCopy(src, srcx, srcy, dst, dstx, dsty, width, -hight); 252 if (dst == VGLDisplay) 253 VGLMouseUnFreeze(); 254 return error; 255 } 256 257 VGLBitmap 258 *VGLBitmapCreate(int type, int xsize, int ysize, byte *bits) 259 { 260 VGLBitmap *object; 261 262 if (type != MEMBUF) 263 return NULL; 264 if (xsize < 0 || ysize < 0) 265 return NULL; 266 object = (VGLBitmap *)malloc(sizeof(*object)); 267 if (object == NULL) 268 return NULL; 269 object->Type = type; 270 object->Xsize = xsize; 271 object->Ysize = ysize; 272 object->VXsize = xsize; 273 object->VYsize = ysize; 274 object->Xorigin = 0; 275 object->Yorigin = 0; 276 object->Bitmap = bits; 277 object->PixelBytes = VGLDisplay->PixelBytes; 278 return object; 279 } 280 281 void 282 VGLBitmapDestroy(VGLBitmap *object) 283 { 284 if (object->Bitmap) 285 free(object->Bitmap); 286 free(object); 287 } 288 289 int 290 VGLBitmapAllocateBits(VGLBitmap *object) 291 { 292 object->Bitmap = malloc(object->VXsize*object->VYsize*object->PixelBytes); 293 if (object->Bitmap == NULL) 294 return -1; 295 return 0; 296 } 297 298 void 299 VGLBitmapCvt(VGLBitmap *src, VGLBitmap *dst) 300 { 301 u_long color; 302 int dstpos, i, pb, size, srcpb, srcpos; 303 304 size = src->VXsize * src->VYsize; 305 srcpb = src->PixelBytes; 306 if (srcpb <= 0) 307 srcpb = 1; 308 pb = dst->PixelBytes; 309 if (pb == srcpb) { 310 bcopy(src->Bitmap, dst->Bitmap, size * pb); 311 return; 312 } 313 if (srcpb != 1) 314 return; /* not supported */ 315 for (srcpos = dstpos = 0; srcpos < size; srcpos++) { 316 color = VGLrgb332ToNative(src->Bitmap[srcpos]); 317 for (i = 0; i < pb; i++, color >>= 8) 318 dst->Bitmap[dstpos++] = color; 319 } 320 } 321