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     return ((width * depth + 31) / 8) & ~3;
  35 }
  36
  37
  38 /***************************************************************************
  39  *                PSDRV_WriteImageHeader
  40  *
  41  * Helper for PSDRV_PutImage
  42  *
  43  * BUGS
  44  *  Uses level 2 PostScript
  45  */
  46
  47 static BOOL PSDRV_WriteImageHeader(PHYSDEV dev, const BITMAPINFO *info, INT xDst,
  48                                    INT yDst, INT widthDst, INT heightDst,
  49                                    INT widthSrc, INT heightSrc)
  50 {
  51     switch(info->bmiHeader.biBitCount)
  52     {
  53     case 1:
  54     case 4:
  55     case 8:
  56         PSDRV_WriteIndexColorSpaceBegin(dev, (1 << info->bmiHeader.biBitCount) - 1);
  57         PSDRV_WriteRGBQUAD(dev, info->bmiColors, 1 << info->bmiHeader.biBitCount);
  58         PSDRV_WriteIndexColorSpaceEnd(dev);
  59         break;
  60
  61     case 16:
  62     case 24:
  63     case 32:
  64       {
  65         PSCOLOR pscol;
  66         pscol.type = PSCOLOR_RGB;
  67         pscol.value.rgb.r = pscol.value.rgb.g = pscol.value.rgb.b = 0.0;
  68         PSDRV_WriteSetColor(dev, &pscol);
  69         break;
  70       }
  71     }
  72
  73     PSDRV_WriteImage(dev, info->bmiHeader.biBitCount, xDst, yDst,
  74                      widthDst, heightDst, widthSrc, heightSrc, FALSE, info->bmiHeader.biHeight < 0);
  75     return TRUE;
  76 }
  77
  78
  79 /***************************************************************************
  80  *                PSDRV_WriteImageMaskHeader
  81  *
  82  * Helper for PSDRV_PutImage
  83  *
  84  * We use the imagemask operator for 1bpp bitmaps since the output
  85  * takes much less time for the printer to render.
  86  *
  87  * BUGS
  88  *  Uses level 2 PostScript
  89  */
  90
  91 static BOOL PSDRV_WriteImageMaskHeader(PHYSDEV dev, const BITMAPINFO *info, INT xDst,
  92                                        INT yDst, INT widthDst, INT heightDst,
  93                                        INT widthSrc, INT heightSrc)
  94 {
  95     PSCOLOR bkgnd, foregnd;
  96
  97     assert(info->bmiHeader.biBitCount == 1);
  98
  99     /* We'll write the mask with -ve polarity so that
 100        the foregnd color corresponds to a bit equal to
 101        0 in the bitmap.
 102     */
 103     PSDRV_CreateColor(dev, &foregnd, RGB(info->bmiColors[0].rgbRed,
 104                                          info->bmiColors[0].rgbGreen,
 105                                          info->bmiColors[0].rgbBlue) );
 106     PSDRV_CreateColor(dev, &bkgnd, RGB(info->bmiColors[1].rgbRed,
 107                                        info->bmiColors[1].rgbGreen,
 108                                        info->bmiColors[1].rgbBlue) );
 109
 110     PSDRV_WriteGSave(dev);
 111     PSDRV_WriteNewPath(dev);
 112     PSDRV_WriteRectangle(dev, xDst, yDst, widthDst, heightDst);
 113     PSDRV_WriteSetColor(dev, &bkgnd);
 114     PSDRV_WriteFill(dev);
 115     PSDRV_WriteGRestore(dev);
 116
 117     PSDRV_WriteSetColor(dev, &foregnd);
 118     PSDRV_WriteImage(dev, 1, xDst, yDst, widthDst, heightDst,
 119                      widthSrc, heightSrc, TRUE, info->bmiHeader.biHeight < 0);
 120
 121     return TRUE;
 122 }
 123
 124 static inline DWORD max_rle_size(DWORD size)
 125 {
 126     return size + (size + 127) / 128 + 1;
 127 }
 128
 129 static inline DWORD max_ascii85_size(DWORD size)
 130 {
 131     return (size + 3) / 4 * 5;
 132 }
 133
 134 static void free_heap_bits( struct gdi_image_bits *bits )
 135 {
 136     HeapFree( GetProcessHeap(), 0, bits->ptr );
 137 }
 138
 139 /***************************************************************************
 140  *                PSDRV_WriteImageBits
 141  */
 142 static void PSDRV_WriteImageBits( PHYSDEV dev, const BITMAPINFO *info, INT xDst, INT yDst,
 143                                   INT widthDst, INT heightDst, INT widthSrc, INT heightSrc,
 144                                   void *bits, DWORD size )
 145 {
 146     BYTE *rle, *ascii85;
 147     DWORD rle_len, ascii85_len;
 148
 149     if (info->bmiHeader.biBitCount == 1)
 150         /* Use imagemask rather than image */
 151         PSDRV_WriteImageMaskHeader(dev, info, xDst, yDst, widthDst, heightDst,
 152                                    widthSrc, heightSrc);
 153     else
 154         PSDRV_WriteImageHeader(dev, info, xDst, yDst, widthDst, heightDst,
 155                                widthSrc, heightSrc);
 156
 157     rle = HeapAlloc(GetProcessHeap(), 0, max_rle_size(size));
 158     rle_len = RLE_encode(bits, size, rle);
 159     ascii85 = HeapAlloc(GetProcessHeap(), 0, max_ascii85_size(rle_len));
 160     ascii85_len = ASCII85_encode(rle, rle_len, ascii85);
 161     HeapFree(GetProcessHeap(), 0, rle);
 162     PSDRV_WriteData(dev, ascii85, ascii85_len);
 163     PSDRV_WriteSpool(dev, "~>\n", 3);
 164     HeapFree(GetProcessHeap(), 0, ascii85);
 165 }
 166
 167 /***********************************************************************
 168  *           PSDRV_PutImage
 169  */
 170 DWORD PSDRV_PutImage( PHYSDEV dev, HRGN clip, BITMAPINFO *info,
 171                       const struct gdi_image_bits *bits, struct bitblt_coords *src,
 172                       struct bitblt_coords *dst, DWORD rop )
 173 {
 174     int src_stride, dst_stride, size, x, y, width, height, bit_offset;
 175     int dst_x, dst_y, dst_width, dst_height;
 176     unsigned char *src_ptr, *dst_ptr;
 177     struct gdi_image_bits dst_bits;
 178
 179     if (info->bmiHeader.biPlanes != 1) goto update_format;
 180     if (info->bmiHeader.biCompression != BI_RGB) goto update_format;
 181     if (info->bmiHeader.biBitCount == 16 || info->bmiHeader.biBitCount == 32) goto update_format;
 182     if (!bits) return ERROR_SUCCESS;  /* just querying the format */
 183
 184     TRACE( "bpp %u %s -> %s\n", info->bmiHeader.biBitCount, wine_dbgstr_rect(&src->visrect),
 185            wine_dbgstr_rect(&dst->visrect) );
 186
 187     width = src->visrect.right - src->visrect.left;
 188     height = src->visrect.bottom - src->visrect.top;
 189     src_stride = get_dib_width_bytes( info->bmiHeader.biWidth, info->bmiHeader.biBitCount );
 190     dst_stride = (width * info->bmiHeader.biBitCount + 7) / 8;
 191
 192     src_ptr = bits->ptr;
 193     if (info->bmiHeader.biHeight > 0)
 194         src_ptr += (info->bmiHeader.biHeight - src->visrect.bottom) * src_stride;
 195     else
 196         src_ptr += src->visrect.top * src_stride;
 197     bit_offset = src->visrect.left * info->bmiHeader.biBitCount;
 198     src_ptr += bit_offset / 8;
 199     bit_offset &= 7;
 200     if (bit_offset) FIXME( "pos %s not supported\n", wine_dbgstr_rect(&src->visrect) );
 201     size = height * dst_stride;
 202
 203     if (src_stride != dst_stride || (info->bmiHeader.biBitCount == 24 && !bits->is_copy))
 204     {
 205         if (!(dst_bits.ptr = HeapAlloc( GetProcessHeap(), 0, size ))) return ERROR_OUTOFMEMORY;
 206         dst_bits.is_copy = TRUE;
 207         dst_bits.free = free_heap_bits;
 208     }
 209     else
 210     {
 211         dst_bits.ptr = src_ptr;
 212         dst_bits.is_copy = bits->is_copy;
 213         dst_bits.free = NULL;
 214     }
 215     dst_ptr = dst_bits.ptr;
 216
 217     switch (info->bmiHeader.biBitCount)
 218     {
 219     case 1:
 220     case 4:
 221     case 8:
 222         if (src_stride != dst_stride)
 223             for (y = 0; y < height; y++, src_ptr += src_stride, dst_ptr += dst_stride)
 224                 memcpy( dst_ptr, src_ptr, dst_stride );
 225         break;
 226     case 24:
 227         if (dst_ptr != src_ptr)
 228             for (y = 0; y < height; y++, src_ptr += src_stride, dst_ptr += dst_stride)
 229                 for (x = 0; x < width; x++)
 230                 {
 231                     dst_ptr[x * 3]     = src_ptr[x * 3 + 2];
 232                     dst_ptr[x * 3 + 1] = src_ptr[x * 3 + 1];
 233                     dst_ptr[x * 3 + 2] = src_ptr[x * 3];
 234                 }
 235         else  /* swap R and B in place */
 236             for (y = 0; y < height; y++, src_ptr += src_stride, dst_ptr += dst_stride)
 237                 for (x = 0; x < width; x++)
 238                 {
 239                     unsigned char tmp = dst_ptr[x * 3];
 240                     dst_ptr[x * 3] = dst_ptr[x * 3 + 2];
 241                     dst_ptr[x * 3 + 2] = tmp;
 242                 }
 243         break;
 244     }
 245
 246     dst_x = dst->visrect.left;
 247     dst_y = dst->visrect.top,
 248     dst_width = dst->visrect.right - dst->visrect.left;
 249     dst_height = dst->visrect.bottom - dst->visrect.top;
 250     if (src->width * dst->width < 0)
 251     {
 252         dst_x += dst_width;
 253         dst_width = -dst_width;
 254     }
 255     if (src->height * dst->height < 0)
 256     {
 257         dst_y += dst_height;
 258         dst_height = -dst_height;
 259     }
 260
 261     PSDRV_SetClip(dev);
 262     PSDRV_WriteGSave(dev);
 263     if (clip) PSDRV_AddClip( dev, clip );
 264     PSDRV_WriteImageBits( dev, info, dst_x, dst_y, dst_width, dst_height,
 265                           width, height, dst_bits.ptr, size );
 266     PSDRV_WriteGRestore(dev);
 267     PSDRV_ResetClip(dev);
 268     if (dst_bits.free) dst_bits.free( &dst_bits );
 269     return ERROR_SUCCESS;
 270
 271 update_format:
 272     info->bmiHeader.biPlanes = 1;
 273     if (info->bmiHeader.biBitCount > 8) info->bmiHeader.biBitCount = 24;
 274     info->bmiHeader.biCompression = BI_RGB;
 275     return ERROR_BAD_FORMAT;
 276 }