dlls/wineps/bitmap.c

   1 /*
   2  *      PostScript driver bitmap functions
   3  *
   4  * Copyright 1998  Huw D M Davies
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include <assert.h>
  22 #include <stdlib.h>
  23
  24 #include "psdrv.h"
  25 #include "winbase.h"
  26 #include "wine/debug.h"
  27
  28 WINE_DEFAULT_DEBUG_CHANNEL(psdrv);
  29
  30
  31 /* Return the width of a DIB bitmap in bytes. DIB bitmap data is 32-bit aligned. */
  32 inline static int get_dib_width_bytes( int width, int depth )
  33 {
  34     int words;
  35
  36     switch(depth)
  37     {
  38     case 1:  words = (width + 31) / 32; break;
  39     case 4:  words = (width + 7) / 8; break;
  40     case 8:  words = (width + 3) / 4; break;
  41     case 15:
  42     case 16: words = (width + 1) / 2; break;
  43     case 24: words = (width * 3 + 3)/4; break;
  44     default:
  45         WARN("(%d): Unsupported depth\n", depth );
  46         /* fall through */
  47     case 32: words = width; break;
  48     }
  49     return 4 * words;
  50 }
  51
  52 /* get the bitmap info from either an INFOHEADER or COREHEADER bitmap */
  53 static BOOL get_bitmap_info( const void *ptr, LONG *width, LONG *height, WORD *bpp, WORD *compr )
  54 {
  55     const BITMAPINFOHEADER *header = ptr;
  56
  57     switch(header->biSize)
  58     {
  59     case sizeof(BITMAPCOREHEADER):
  60         {
  61             const BITMAPCOREHEADER *core = (BITMAPCOREHEADER *)header;
  62             *width  = core->bcWidth;
  63             *height = core->bcHeight;
  64             *bpp    = core->bcBitCount;
  65             *compr  = 0;
  66         }
  67         return TRUE;
  68     case sizeof(BITMAPINFOHEADER):
  69     case sizeof(BITMAPV4HEADER):
  70     case sizeof(BITMAPV5HEADER):
  71         /* V4 and V5 structures are a superset of the INFOHEADER structure */
  72         *width  = header->biWidth;
  73         *height = header->biHeight;
  74         *bpp    = header->biBitCount;
  75         *compr  = header->biCompression;
  76         return TRUE;
  77     default:
  78         ERR("(%ld): unknown/wrong size for header\n", header->biSize );
  79         return FALSE;
  80     }
  81 }
  82
  83
  84 /***************************************************************************
  85  *                PSDRV_WriteImageHeader
  86  *
  87  * Helper for PSDRV_StretchDIBits
  88  *
  89  * BUGS
  90  *  Uses level 2 PostScript
  91  */
  92
  93 static BOOL PSDRV_WriteImageHeader(PSDRV_PDEVICE *physDev, const BITMAPINFO *info, INT xDst,
  94                                    INT yDst, INT widthDst, INT heightDst,
  95                                    INT widthSrc, INT heightSrc)
  96 {
  97     COLORREF map[256];
  98     int i;
  99
 100     switch(info->bmiHeader.biBitCount) {
 101     case 8:
 102         PSDRV_WriteIndexColorSpaceBegin(physDev, 255);
 103         for(i = 0; i < 256; i++) {
 104             map[i] =  info->bmiColors[i].rgbRed |
 105               info->bmiColors[i].rgbGreen << 8 |
 106               info->bmiColors[i].rgbBlue << 16;
 107         }
 108         PSDRV_WriteRGB(physDev, map, 256);
 109         PSDRV_WriteIndexColorSpaceEnd(physDev);
 110         break;
 111
 112     case 4:
 113         PSDRV_WriteIndexColorSpaceBegin(physDev, 15);
 114         for(i = 0; i < 16; i++) {
 115             map[i] =  info->bmiColors[i].rgbRed |
 116               info->bmiColors[i].rgbGreen << 8 |
 117               info->bmiColors[i].rgbBlue << 16;
 118         }
 119         PSDRV_WriteRGB(physDev, map, 16);
 120         PSDRV_WriteIndexColorSpaceEnd(physDev);
 121         break;
 122
 123     case 1:
 124         PSDRV_WriteIndexColorSpaceBegin(physDev, 1);
 125         for(i = 0; i < 2; i++) {
 126             map[i] =  info->bmiColors[i].rgbRed |
 127               info->bmiColors[i].rgbGreen << 8 |
 128               info->bmiColors[i].rgbBlue << 16;
 129         }
 130         PSDRV_WriteRGB(physDev, map, 2);
 131         PSDRV_WriteIndexColorSpaceEnd(physDev);
 132         break;
 133
 134     case 15:
 135     case 16:
 136     case 24:
 137     case 32:
 138       {
 139         PSCOLOR pscol;
 140         pscol.type = PSCOLOR_RGB;
 141         pscol.value.rgb.r = pscol.value.rgb.g = pscol.value.rgb.b = 0.0;
 142         PSDRV_WriteSetColor(physDev, &pscol);
 143         break;
 144       }
 145
 146     default:
 147         FIXME("Not implemented yet\n");
 148         return FALSE;
 149         break;
 150     }
 151
 152     PSDRV_WriteImageDict(physDev, info->bmiHeader.biBitCount, xDst, yDst,
 153                           widthDst, heightDst, widthSrc, heightSrc, NULL, FALSE);
 154     return TRUE;
 155 }
 156
 157
 158 /***************************************************************************
 159  *                PSDRV_WriteImageMaskHeader
 160  *
 161  * Helper for PSDRV_StretchDIBits
 162  *
 163  * We use the imagemask operator for 1bpp bitmaps since the output
 164  * takes much less time for the printer to render.
 165  *
 166  * BUGS
 167  *  Uses level 2 PostScript
 168  */
 169
 170 static BOOL PSDRV_WriteImageMaskHeader(PSDRV_PDEVICE *physDev, const BITMAPINFO *info, INT xDst,
 171                                        INT yDst, INT widthDst, INT heightDst,
 172                                        INT widthSrc, INT heightSrc)
 173 {
 174     COLORREF map[2];
 175     PSCOLOR bkgnd, foregnd;
 176     int i;
 177
 178     assert(info->bmiHeader.biBitCount == 1);
 179
 180     for(i = 0; i < 2; i++) {
 181         map[i] =  info->bmiColors[i].rgbRed |
 182             info->bmiColors[i].rgbGreen << 8 |
 183             info->bmiColors[i].rgbBlue << 16;
 184     }
 185
 186     /* We'll write the mask with -ve polarity so that
 187        the foregnd color corresponds to a bit equal to
 188        0 in the bitmap.
 189     */
 190     PSDRV_CreateColor(physDev, &foregnd, map[0]);
 191     PSDRV_CreateColor(physDev, &bkgnd, map[1]);
 192
 193     PSDRV_WriteGSave(physDev);
 194     PSDRV_WriteNewPath(physDev);
 195     PSDRV_WriteRectangle(physDev, xDst, yDst, widthDst, heightDst);
 196     PSDRV_WriteSetColor(physDev, &bkgnd);
 197     PSDRV_WriteFill(physDev);
 198     PSDRV_WriteGRestore(physDev);
 199
 200     PSDRV_WriteSetColor(physDev, &foregnd);
 201     PSDRV_WriteImageDict(physDev, 1, xDst, yDst, widthDst, heightDst,
 202                          widthSrc, heightSrc, NULL, TRUE);
 203
 204     return TRUE;
 205 }
 206
 207 static inline DWORD max_rle_size(DWORD size)
 208 {
 209     return size + (size + 127) / 128 + 1;
 210 }
 211
 212 static inline DWORD max_ascii85_size(DWORD size)
 213 {
 214     return (size + 3) / 4 * 5;
 215 }
 216
 217 /***************************************************************************
 218  *
 219  *      PSDRV_StretchDIBits
 220  *
 221  * BUGS
 222  *  Doesn't work correctly if xSrc isn't byte aligned - this affects 1 and 4
 223  *  bit depths.
 224  *  Compression not implemented.
 225  */
 226 INT PSDRV_StretchDIBits( PSDRV_PDEVICE *physDev, INT xDst, INT yDst, INT widthDst,
 227                          INT heightDst, INT xSrc, INT ySrc,
 228                          INT widthSrc, INT heightSrc, const void *bits,
 229                          const BITMAPINFO *info, UINT wUsage, DWORD dwRop )
 230 {
 231     LONG fullSrcWidth, fullSrcHeight;
 232     INT widthbytes;
 233     WORD bpp, compression;
 234     INT line;
 235     POINT pt[2];
 236     const BYTE *src_ptr;
 237     BYTE *dst_ptr, *bitmap, *rle, *ascii85;
 238     DWORD rle_len, ascii85_len, bitmap_size;
 239
 240     TRACE("%p (%d,%d %dx%d) -> (%d,%d %dx%d)\n", physDev->hdc,
 241           xSrc, ySrc, widthSrc, heightSrc, xDst, yDst, widthDst, heightDst);
 242
 243     if (!get_bitmap_info( info, &fullSrcWidth, &fullSrcHeight, &bpp, &compression )) return FALSE;
 244
 245     widthbytes = get_dib_width_bytes(fullSrcWidth, bpp);
 246
 247     TRACE("full size=%ldx%ld bpp=%d compression=%d rop=%08lx\n", fullSrcWidth,
 248           fullSrcHeight, bpp, compression, dwRop);
 249
 250
 251     if(compression != BI_RGB) {
 252         FIXME("Compression not supported\n");
 253         return FALSE;
 254     }
 255
 256     pt[0].x = xDst;
 257     pt[0].y = yDst;
 258     pt[1].x = xDst + widthDst;
 259     pt[1].y = yDst + heightDst;
 260     LPtoDP( physDev->hdc, pt, 2 );
 261     xDst = pt[0].x;
 262     yDst = pt[0].y;
 263     widthDst = pt[1].x - pt[0].x;
 264     heightDst = pt[1].y - pt[0].y;
 265
 266     switch(bpp) {
 267
 268     case 1:
 269         PSDRV_SetClip(physDev);
 270         PSDRV_WriteGSave(physDev);
 271
 272         /* Use imagemask rather than image */
 273         PSDRV_WriteImageMaskHeader(physDev, info, xDst, yDst, widthDst, heightDst,
 274                                    widthSrc, heightSrc);
 275         src_ptr = bits;
 276         src_ptr += (ySrc * widthbytes);
 277         if(xSrc & 7)
 278             FIXME("This won't work...\n");
 279         bitmap_size = heightSrc * ((widthSrc + 7) / 8);
 280         dst_ptr = bitmap = HeapAlloc(GetProcessHeap(), 0, bitmap_size);
 281         for(line = 0; line < heightSrc; line++, src_ptr += widthbytes, dst_ptr += ((widthSrc + 7) / 8))
 282             memcpy(dst_ptr, src_ptr + xSrc / 8, (widthSrc + 7) / 8);
 283         break;
 284
 285     case 4:
 286         PSDRV_SetClip(physDev);
 287         PSDRV_WriteGSave(physDev);
 288         PSDRV_WriteImageHeader(physDev, info, xDst, yDst, widthDst, heightDst,
 289                                widthSrc, heightSrc);
 290         src_ptr = bits;
 291         src_ptr += (ySrc * widthbytes);
 292         if(xSrc & 1)
 293             FIXME("This won't work...\n");
 294         bitmap_size = heightSrc * ((widthSrc + 1) / 2);
 295         dst_ptr = bitmap = HeapAlloc(GetProcessHeap(), 0, bitmap_size);
 296         for(line = 0; line < heightSrc; line++, src_ptr += widthbytes, dst_ptr += ((widthSrc + 1) / 2))
 297             memcpy(dst_ptr, src_ptr + xSrc/2, (widthSrc+1)/2);
 298         break;
 299
 300     case 8:
 301         PSDRV_SetClip(physDev);
 302         PSDRV_WriteGSave(physDev);
 303         PSDRV_WriteImageHeader(physDev, info, xDst, yDst, widthDst, heightDst,
 304                                widthSrc, heightSrc);
 305         src_ptr = bits;
 306         src_ptr += (ySrc * widthbytes);
 307         bitmap_size = heightSrc * widthSrc;
 308         dst_ptr = bitmap = HeapAlloc(GetProcessHeap(), 0, bitmap_size);
 309         for(line = 0; line < heightSrc; line++, src_ptr += widthbytes, dst_ptr += widthSrc)
 310             memcpy(dst_ptr, src_ptr + xSrc, widthSrc);
 311         break;
 312
 313     case 15:
 314     case 16:
 315         PSDRV_SetClip(physDev);
 316         PSDRV_WriteGSave(physDev);
 317         PSDRV_WriteImageHeader(physDev, info, xDst, yDst, widthDst, heightDst,
 318                                widthSrc, heightSrc);
 319
 320
 321         src_ptr = bits;
 322         src_ptr += (ySrc * widthbytes);
 323         bitmap_size = heightSrc * widthSrc * 2;
 324         dst_ptr = bitmap = HeapAlloc(GetProcessHeap(), 0, bitmap_size);
 325
 326         for(line = 0; line < heightSrc; line++, src_ptr += widthbytes) {
 327             const WORD *words = (const WORD *)src_ptr + xSrc;
 328             int i;
 329             for(i = 0; i < widthSrc; i++) {
 330                 BYTE r, g, b;
 331
 332                 /* We want 0x0 -- 0x1f to map to 0x0 -- 0xff */
 333                 r = words[i] >> 10 & 0x1f;
 334                 r = r << 3 | r >> 2;
 335                 g = words[i] >> 5 & 0x1f;
 336                 g = g << 3 | g >> 2;
 337                 b = words[i] & 0x1f;
 338                 b = b << 3 | b >> 2;
 339                 dst_ptr[0] = r;
 340                 dst_ptr[1] = g;
 341                 dst_ptr[2] = b;
 342                 dst_ptr += 3;
 343             }
 344         }
 345         break;
 346
 347     case 24:
 348         PSDRV_SetClip(physDev);
 349         PSDRV_WriteGSave(physDev);
 350         PSDRV_WriteImageHeader(physDev, info, xDst, yDst, widthDst, heightDst,
 351                                widthSrc, heightSrc);
 352
 353         src_ptr = bits;
 354         src_ptr += (ySrc * widthbytes);
 355         bitmap_size = heightSrc * widthSrc * 3;
 356         dst_ptr = bitmap = HeapAlloc(GetProcessHeap(), 0, bitmap_size);
 357         for(line = 0; line < heightSrc; line++, src_ptr += widthbytes) {
 358             const BYTE *byte = src_ptr + xSrc * 3;
 359             int i;
 360             for(i = 0; i < widthSrc; i++) {
 361                 dst_ptr[0] = byte[i * 3 + 2];
 362                 dst_ptr[1] = byte[i * 3 + 1];
 363                 dst_ptr[2] = byte[i * 3];
 364                 dst_ptr += 3;
 365             }
 366         }
 367         break;
 368
 369     case 32:
 370         PSDRV_SetClip(physDev);
 371         PSDRV_WriteGSave(physDev);
 372         PSDRV_WriteImageHeader(physDev, info, xDst, yDst, widthDst, heightDst,
 373                                widthSrc, heightSrc);
 374
 375         src_ptr = bits;
 376         src_ptr += (ySrc * widthbytes);
 377         bitmap_size = heightSrc * widthSrc * 3;
 378         dst_ptr = bitmap = HeapAlloc(GetProcessHeap(), 0, bitmap_size);
 379         for(line = 0; line < heightSrc; line++, src_ptr += widthbytes) {
 380             const BYTE *byte = src_ptr + xSrc * 4;
 381             int i;
 382             for(i = 0; i < widthSrc; i++) {
 383                 dst_ptr[0] = byte[i * 4 + 2];
 384                 dst_ptr[1] = byte[i * 4 + 1];
 385                 dst_ptr[2] = byte[i * 4];
 386                 dst_ptr += 3;
 387             }
 388         }
 389         break;
 390
 391     default:
 392         FIXME("Unsupported depth\n");
 393         return FALSE;
 394
 395     }
 396
 397     rle = HeapAlloc(GetProcessHeap(), 0, max_rle_size(bitmap_size));
 398     rle_len = RLE_encode(bitmap, bitmap_size, rle);
 399     HeapFree(GetProcessHeap(), 0, bitmap);
 400     ascii85 = HeapAlloc(GetProcessHeap(), 0, max_ascii85_size(rle_len));
 401     ascii85_len = ASCII85_encode(rle, rle_len, ascii85);
 402     HeapFree(GetProcessHeap(), 0, rle);
 403     PSDRV_WriteData(physDev, ascii85, ascii85_len);
 404     HeapFree(GetProcessHeap(), 0, ascii85);
 405     PSDRV_WriteSpool(physDev, "~>\n", 3);
 406     PSDRV_WriteGRestore(physDev);
 407     PSDRV_ResetClip(physDev);
 408     return abs(heightSrc);
 409 }