/*
* PostScript driver bitmap functions
*
* Copyright 1998 Huw D M Davies
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <assert.h>
#include <stdlib.h>
#include "psdrv.h"
#include "winbase.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(psdrv);
/* Return the width of a DIB bitmap in bytes. DIB bitmap data is 32-bit aligned. */
static inline int get_dib_width_bytes( int width, int depth )
{
return ((width * depth + 31) / 8) & ~3;
}
/***************************************************************************
* PSDRV_WriteImageHeader
*
* Helper for PSDRV_PutImage
*
* BUGS
* Uses level 2 PostScript
*/
static BOOL PSDRV_WriteImageHeader(PHYSDEV dev, const BITMAPINFO *info, INT xDst,
INT yDst, INT widthDst, INT heightDst,
INT widthSrc, INT heightSrc)
{
switch(info->bmiHeader.biBitCount)
{
case 1:
case 4:
case 8:
PSDRV_WriteIndexColorSpaceBegin(dev, (1 << info->bmiHeader.biBitCount) - 1);
PSDRV_WriteRGBQUAD(dev, info->bmiColors, 1 << info->bmiHeader.biBitCount);
PSDRV_WriteIndexColorSpaceEnd(dev);
break;
case 16:
case 24:
case 32:
{
PSCOLOR pscol;
pscol.type = PSCOLOR_RGB;
pscol.value.rgb.r = pscol.value.rgb.g = pscol.value.rgb.b = 0.0;
PSDRV_WriteSetColor(dev, &pscol);
break;
}
}
PSDRV_WriteImage(dev, info->bmiHeader.biBitCount, xDst, yDst,
widthDst, heightDst, widthSrc, heightSrc, FALSE, info->bmiHeader.biHeight < 0);
return TRUE;
}
/***************************************************************************
* PSDRV_WriteImageMaskHeader
*
* Helper for PSDRV_PutImage
*
* We use the imagemask operator for 1bpp bitmaps since the output
* takes much less time for the printer to render.
*
* BUGS
* Uses level 2 PostScript
*/
static BOOL PSDRV_WriteImageMaskHeader(PHYSDEV dev, const BITMAPINFO *info, INT xDst,
INT yDst, INT widthDst, INT heightDst,
INT widthSrc, INT heightSrc)
{
PSCOLOR bkgnd, foregnd;
assert(info->bmiHeader.biBitCount == 1);
/* We'll write the mask with -ve polarity so that
the foregnd color corresponds to a bit equal to
0 in the bitmap.
*/
PSDRV_CreateColor(dev, &foregnd, RGB(info->bmiColors[0].rgbRed,
info->bmiColors[0].rgbGreen,
info->bmiColors[0].rgbBlue) );
PSDRV_CreateColor(dev, &bkgnd, RGB(info->bmiColors[1].rgbRed,
info->bmiColors[1].rgbGreen,
info->bmiColors[1].rgbBlue) );
PSDRV_WriteGSave(dev);
PSDRV_WriteNewPath(dev);
PSDRV_WriteRectangle(dev, xDst, yDst, widthDst, heightDst);
PSDRV_WriteSetColor(dev, &bkgnd);
PSDRV_WriteFill(dev);
PSDRV_WriteGRestore(dev);
PSDRV_WriteSetColor(dev, &foregnd);
PSDRV_WriteImage(dev, 1, xDst, yDst, widthDst, heightDst,
widthSrc, heightSrc, TRUE, info->bmiHeader.biHeight < 0);
return TRUE;
}
static inline DWORD max_rle_size(DWORD size)
{
return size + (size + 127) / 128 + 1;
}
static inline DWORD max_ascii85_size(DWORD size)
{
return (size + 3) / 4 * 5;
}
static void free_heap_bits( struct gdi_image_bits *bits )
{
HeapFree( GetProcessHeap(), 0, bits->ptr );
}
/***************************************************************************
* PSDRV_WriteImageBits
*/
static void PSDRV_WriteImageBits( PHYSDEV dev, const BITMAPINFO *info, INT xDst, INT yDst,
INT widthDst, INT heightDst, INT widthSrc, INT heightSrc,
void *bits, DWORD size )
{
BYTE *rle, *ascii85;
DWORD rle_len, ascii85_len;
if (info->bmiHeader.biBitCount == 1)
/* Use imagemask rather than image */
PSDRV_WriteImageMaskHeader(dev, info, xDst, yDst, widthDst, heightDst,
widthSrc, heightSrc);
else
PSDRV_WriteImageHeader(dev, info, xDst, yDst, widthDst, heightDst,
widthSrc, heightSrc);
rle = HeapAlloc(GetProcessHeap(), 0, max_rle_size(size));
rle_len = RLE_encode(bits, size, rle);
ascii85 = HeapAlloc(GetProcessHeap(), 0, max_ascii85_size(rle_len));
ascii85_len = ASCII85_encode(rle, rle_len, ascii85);
HeapFree(GetProcessHeap(), 0, rle);
PSDRV_WriteData(dev, ascii85, ascii85_len);
PSDRV_WriteSpool(dev, "~>\n", 3);
HeapFree(GetProcessHeap(), 0, ascii85);
}
/***********************************************************************
* PSDRV_PutImage
*/
DWORD PSDRV_PutImage( PHYSDEV dev, HRGN clip, BITMAPINFO *info,
const struct gdi_image_bits *bits, struct bitblt_coords *src,
struct bitblt_coords *dst, DWORD rop )
{
int src_stride, dst_stride, size, x, y, width, height, bit_offset;
int dst_x, dst_y, dst_width, dst_height;
unsigned char *src_ptr, *dst_ptr;
struct gdi_image_bits dst_bits;
if (info->bmiHeader.biPlanes != 1) goto update_format;
if (info->bmiHeader.biCompression != BI_RGB) goto update_format;
if (info->bmiHeader.biBitCount == 16 || info->bmiHeader.biBitCount == 32) goto update_format;
if (!bits) return ERROR_SUCCESS; /* just querying the format */
TRACE( "bpp %u %s -> %s\n", info->bmiHeader.biBitCount, wine_dbgstr_rect(&src->visrect),
wine_dbgstr_rect(&dst->visrect) );
width = src->visrect.right - src->visrect.left;
height = src->visrect.bottom - src->visrect.top;
src_stride = get_dib_width_bytes( info->bmiHeader.biWidth, info->bmiHeader.biBitCount );
dst_stride = (width * info->bmiHeader.biBitCount + 7) / 8;
src_ptr = bits->ptr;
if (info->bmiHeader.biHeight > 0)
src_ptr += (info->bmiHeader.biHeight - src->visrect.bottom) * src_stride;
else
src_ptr += src->visrect.top * src_stride;
bit_offset = src->visrect.left * info->bmiHeader.biBitCount;
src_ptr += bit_offset / 8;
bit_offset &= 7;
if (bit_offset) FIXME( "pos %s not supported\n", wine_dbgstr_rect(&src->visrect) );
size = height * dst_stride;
if (src_stride != dst_stride || (info->bmiHeader.biBitCount == 24 && !bits->is_copy))
{
if (!(dst_bits.ptr = HeapAlloc( GetProcessHeap(), 0, size ))) return ERROR_OUTOFMEMORY;
dst_bits.is_copy = TRUE;
dst_bits.free = free_heap_bits;
}
else
{
dst_bits.ptr = src_ptr;
dst_bits.is_copy = bits->is_copy;
dst_bits.free = NULL;
}
dst_ptr = dst_bits.ptr;
switch (info->bmiHeader.biBitCount)
{
case 1:
case 4:
case 8:
if (src_stride != dst_stride)
for (y = 0; y < height; y++, src_ptr += src_stride, dst_ptr += dst_stride)
memcpy( dst_ptr, src_ptr, dst_stride );
break;
case 24:
if (dst_ptr != src_ptr)
for (y = 0; y < height; y++, src_ptr += src_stride, dst_ptr += dst_stride)
for (x = 0; x < width; x++)
{
dst_ptr[x * 3] = src_ptr[x * 3 + 2];
dst_ptr[x * 3 + 1] = src_ptr[x * 3 + 1];
dst_ptr[x * 3 + 2] = src_ptr[x * 3];
}
else /* swap R and B in place */
for (y = 0; y < height; y++, src_ptr += src_stride, dst_ptr += dst_stride)
for (x = 0; x < width; x++)
{
unsigned char tmp = dst_ptr[x * 3];
dst_ptr[x * 3] = dst_ptr[x * 3 + 2];
dst_ptr[x * 3 + 2] = tmp;
}
break;
}
dst_x = dst->visrect.left;
dst_y = dst->visrect.top,
dst_width = dst->visrect.right - dst->visrect.left;
dst_height = dst->visrect.bottom - dst->visrect.top;
if (src->width * dst->width < 0)
{
dst_x += dst_width;
dst_width = -dst_width;
}
if (src->height * dst->height < 0)
{
dst_y += dst_height;
dst_height = -dst_height;
}
PSDRV_SetClip(dev);
PSDRV_WriteGSave(dev);
if (clip) PSDRV_AddClip( dev, clip );
PSDRV_WriteImageBits( dev, info, dst_x, dst_y, dst_width, dst_height,
width, height, dst_bits.ptr, size );
PSDRV_WriteGRestore(dev);
PSDRV_ResetClip(dev);
if (dst_bits.free) dst_bits.free( &dst_bits );
return ERROR_SUCCESS;
update_format:
info->bmiHeader.biPlanes = 1;
if (info->bmiHeader.biBitCount > 8) info->bmiHeader.biBitCount = 24;
info->bmiHeader.biCompression = BI_RGB;
return ERROR_BAD_FORMAT;
}