dlls/wineps.drv/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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, 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 static inline 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 = (const 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("(%d): 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(PHYSDEV dev, const BITMAPINFO *info, INT xDst,
  94                                    INT yDst, INT widthDst, INT heightDst,
  95                                    INT widthSrc, INT heightSrc)
  96 {
  97     switch(info->bmiHeader.biBitCount)
  98     {
  99     case 1:
 100     case 4:
 101     case 8:
 102         PSDRV_WriteIndexColorSpaceBegin(dev, (1 << info->bmiHeader.biBitCount) - 1);
 103         PSDRV_WriteRGBQUAD(dev, info->bmiColors, 1 << info->bmiHeader.biBitCount);
 104         PSDRV_WriteIndexColorSpaceEnd(dev);
 105         break;
 106
 107     case 16:
 108     case 24:
 109     case 32:
 110       {
 111         PSCOLOR pscol;
 112         pscol.type = PSCOLOR_RGB;
 113         pscol.value.rgb.r = pscol.value.rgb.g = pscol.value.rgb.b = 0.0;
 114         PSDRV_WriteSetColor(dev, &pscol);
 115         break;
 116       }
 117     }
 118
 119     PSDRV_WriteImage(dev, info->bmiHeader.biBitCount, xDst, yDst,
 120                      widthDst, heightDst, widthSrc, heightSrc, FALSE, info->bmiHeader.biHeight < 0);
 121     return TRUE;
 122 }
 123
 124
 125 /***************************************************************************
 126  *                PSDRV_WriteImageMaskHeader
 127  *
 128  * Helper for PSDRV_StretchDIBits
 129  *
 130  * We use the imagemask operator for 1bpp bitmaps since the output
 131  * takes much less time for the printer to render.
 132  *
 133  * BUGS
 134  *  Uses level 2 PostScript
 135  */
 136
 137 static BOOL PSDRV_WriteImageMaskHeader(PHYSDEV dev, const BITMAPINFO *info, INT xDst,
 138                                        INT yDst, INT widthDst, INT heightDst,
 139                                        INT widthSrc, INT heightSrc)
 140 {
 141     PSCOLOR bkgnd, foregnd;
 142
 143     assert(info->bmiHeader.biBitCount == 1);
 144
 145     /* We'll write the mask with -ve polarity so that
 146        the foregnd color corresponds to a bit equal to
 147        0 in the bitmap.
 148     */
 149     PSDRV_CreateColor(dev, &foregnd, RGB(info->bmiColors[0].rgbRed,
 150                                          info->bmiColors[0].rgbGreen,
 151                                          info->bmiColors[0].rgbBlue) );
 152     PSDRV_CreateColor(dev, &bkgnd, RGB(info->bmiColors[1].rgbRed,
 153                                        info->bmiColors[1].rgbGreen,
 154                                        info->bmiColors[1].rgbBlue) );
 155
 156     PSDRV_WriteGSave(dev);
 157     PSDRV_WriteNewPath(dev);
 158     PSDRV_WriteRectangle(dev, xDst, yDst, widthDst, heightDst);
 159     PSDRV_WriteSetColor(dev, &bkgnd);
 160     PSDRV_WriteFill(dev);
 161     PSDRV_WriteGRestore(dev);
 162
 163     PSDRV_WriteSetColor(dev, &foregnd);
 164     PSDRV_WriteImage(dev, 1, xDst, yDst, widthDst, heightDst,
 165                      widthSrc, heightSrc, TRUE, info->bmiHeader.biHeight < 0);
 166
 167     return TRUE;
 168 }
 169
 170 static inline DWORD max_rle_size(DWORD size)
 171 {
 172     return size + (size + 127) / 128 + 1;
 173 }
 174
 175 static inline DWORD max_ascii85_size(DWORD size)
 176 {
 177     return (size + 3) / 4 * 5;
 178 }
 179
 180 /***************************************************************************
 181  *                PSDRV_WriteImageBits
 182  */
 183 static void PSDRV_WriteImageBits( PHYSDEV dev, const BITMAPINFO *info, INT xDst, INT yDst,
 184                                   INT widthDst, INT heightDst, INT widthSrc, INT heightSrc,
 185                                   void *bits, DWORD size )
 186 {
 187     BYTE *rle, *ascii85;
 188     DWORD rle_len, ascii85_len;
 189
 190     if (info->bmiHeader.biBitCount == 1)
 191         /* Use imagemask rather than image */
 192         PSDRV_WriteImageMaskHeader(dev, info, xDst, yDst, widthDst, heightDst,
 193                                    widthSrc, heightSrc);
 194     else
 195         PSDRV_WriteImageHeader(dev, info, xDst, yDst, widthDst, heightDst,
 196                                widthSrc, heightSrc);
 197
 198     rle = HeapAlloc(GetProcessHeap(), 0, max_rle_size(size));
 199     rle_len = RLE_encode(bits, size, rle);
 200     ascii85 = HeapAlloc(GetProcessHeap(), 0, max_ascii85_size(rle_len));
 201     ascii85_len = ASCII85_encode(rle, rle_len, ascii85);
 202     HeapFree(GetProcessHeap(), 0, rle);
 203     PSDRV_WriteData(dev, ascii85, ascii85_len);
 204     PSDRV_WriteSpool(dev, "~>\n", 3);
 205     HeapFree(GetProcessHeap(), 0, ascii85);
 206 }
 207
 208 /***************************************************************************
 209  *
 210  *      PSDRV_StretchDIBits
 211  *
 212  * BUGS
 213  *  Doesn't work correctly if xSrc isn't byte aligned - this affects 1 and 4
 214  *  bit depths.
 215  *  Compression not implemented.
 216  */
 217 INT PSDRV_StretchDIBits( PHYSDEV dev, INT xDst, INT yDst, INT widthDst,
 218                          INT heightDst, INT xSrc, INT ySrc, INT widthSrc, INT heightSrc, const void *bits,
 219                          const BITMAPINFO *info, UINT wUsage, DWORD dwRop )
 220 {
 221     LONG fullSrcWidth, fullSrcHeight;
 222     INT stride;
 223     WORD bpp, compression;
 224     INT line;
 225     POINT pt[2];
 226     const BYTE *src_ptr;
 227     BYTE *dst_ptr, *bitmap;
 228     DWORD bitmap_size;
 229
 230     TRACE("%p (%d,%d %dx%d) -> (%d,%d %dx%d)\n", dev->hdc,
 231           xSrc, ySrc, widthSrc, heightSrc, xDst, yDst, widthDst, heightDst);
 232
 233     if (!get_bitmap_info( info, &fullSrcWidth, &fullSrcHeight, &bpp, &compression )) return FALSE;
 234
 235     stride = get_dib_width_bytes(fullSrcWidth, bpp);
 236
 237     TRACE("full size=%dx%d bpp=%d compression=%d rop=%08x\n", fullSrcWidth,
 238           fullSrcHeight, bpp, compression, dwRop);
 239
 240
 241     if(compression != BI_RGB) {
 242         FIXME("Compression not supported\n");
 243         return FALSE;
 244     }
 245
 246     pt[0].x = xDst;
 247     pt[0].y = yDst;
 248     pt[1].x = xDst + widthDst;
 249     pt[1].y = yDst + heightDst;
 250     LPtoDP( dev->hdc, pt, 2 );
 251     xDst = pt[0].x;
 252     yDst = pt[0].y;
 253     widthDst = pt[1].x - pt[0].x;
 254     heightDst = pt[1].y - pt[0].y;
 255
 256     switch(bpp) {
 257
 258     case 1:
 259         src_ptr = bits;
 260         src_ptr += (ySrc * stride);
 261         if(xSrc & 7)
 262             FIXME("This won't work...\n");
 263         bitmap_size = heightSrc * ((widthSrc + 7) / 8);
 264         dst_ptr = bitmap = HeapAlloc(GetProcessHeap(), 0, bitmap_size);
 265         for(line = 0; line < heightSrc; line++, src_ptr += stride, dst_ptr += ((widthSrc + 7) / 8))
 266             memcpy(dst_ptr, src_ptr + xSrc / 8, (widthSrc + 7) / 8);
 267         break;
 268
 269     case 4:
 270         src_ptr = bits;
 271         src_ptr += (ySrc * stride);
 272         if(xSrc & 1)
 273             FIXME("This won't work...\n");
 274         bitmap_size = heightSrc * ((widthSrc + 1) / 2);
 275         dst_ptr = bitmap = HeapAlloc(GetProcessHeap(), 0, bitmap_size);
 276         for(line = 0; line < heightSrc; line++, src_ptr += stride, dst_ptr += ((widthSrc + 1) / 2))
 277             memcpy(dst_ptr, src_ptr + xSrc/2, (widthSrc+1)/2);
 278         break;
 279
 280     case 8:
 281         src_ptr = bits;
 282         src_ptr += (ySrc * stride);
 283         bitmap_size = heightSrc * widthSrc;
 284         dst_ptr = bitmap = HeapAlloc(GetProcessHeap(), 0, bitmap_size);
 285         for(line = 0; line < heightSrc; line++, src_ptr += stride, dst_ptr += widthSrc)
 286             memcpy(dst_ptr, src_ptr + xSrc, widthSrc);
 287         break;
 288
 289     case 16:
 290         src_ptr = bits;
 291         src_ptr += (ySrc * stride);
 292         bitmap_size = heightSrc * widthSrc * 3;
 293         dst_ptr = bitmap = HeapAlloc(GetProcessHeap(), 0, bitmap_size);
 294
 295         for(line = 0; line < heightSrc; line++, src_ptr += stride) {
 296             const WORD *words = (const WORD *)src_ptr + xSrc;
 297             int i;
 298             for(i = 0; i < widthSrc; i++) {
 299                 BYTE r, g, b;
 300
 301                 /* We want 0x0 -- 0x1f to map to 0x0 -- 0xff */
 302                 r = words[i] >> 10 & 0x1f;
 303                 r = r << 3 | r >> 2;
 304                 g = words[i] >> 5 & 0x1f;
 305                 g = g << 3 | g >> 2;
 306                 b = words[i] & 0x1f;
 307                 b = b << 3 | b >> 2;
 308                 dst_ptr[0] = r;
 309                 dst_ptr[1] = g;
 310                 dst_ptr[2] = b;
 311                 dst_ptr += 3;
 312             }
 313         }
 314         break;
 315
 316     case 24:
 317         src_ptr = bits;
 318         src_ptr += (ySrc * stride);
 319         bitmap_size = heightSrc * widthSrc * 3;
 320         dst_ptr = bitmap = HeapAlloc(GetProcessHeap(), 0, bitmap_size);
 321         for(line = 0; line < heightSrc; line++, src_ptr += stride) {
 322             const BYTE *byte = src_ptr + xSrc * 3;
 323             int i;
 324             for(i = 0; i < widthSrc; i++) {
 325                 dst_ptr[0] = byte[i * 3 + 2];
 326                 dst_ptr[1] = byte[i * 3 + 1];
 327                 dst_ptr[2] = byte[i * 3];
 328                 dst_ptr += 3;
 329             }
 330         }
 331         break;
 332
 333     case 32:
 334         src_ptr = bits;
 335         src_ptr += (ySrc * stride);
 336         bitmap_size = heightSrc * widthSrc * 3;
 337         dst_ptr = bitmap = HeapAlloc(GetProcessHeap(), 0, bitmap_size);
 338         for(line = 0; line < heightSrc; line++, src_ptr += stride) {
 339             const BYTE *byte = src_ptr + xSrc * 4;
 340             int i;
 341             for(i = 0; i < widthSrc; i++) {
 342                 dst_ptr[0] = byte[i * 4 + 2];
 343                 dst_ptr[1] = byte[i * 4 + 1];
 344                 dst_ptr[2] = byte[i * 4];
 345                 dst_ptr += 3;
 346             }
 347         }
 348         break;
 349
 350     default:
 351         FIXME("Unsupported depth\n");
 352         return FALSE;
 353
 354     }
 355
 356     PSDRV_SetClip(dev);
 357     PSDRV_WriteGSave(dev);
 358     PSDRV_WriteImageBits( dev, info, xDst, yDst, widthDst, heightDst,
 359                           widthSrc, heightSrc, bitmap, bitmap_size );
 360     HeapFree(GetProcessHeap(), 0, bitmap);
 361     PSDRV_WriteGRestore(dev);
 362     PSDRV_ResetClip(dev);
 363     return abs(heightSrc);
 364 }