/*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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. */
inline static int get_dib_width_bytes( int width, int depth )
{
int words;
switch(depth)
{
case 1: words = (width + 31) / 32; break;
case 4: words = (width + 7) / 8; break;
case 8: words = (width + 3) / 4; break;
case 15:
case 16: words = (width + 1) / 2; break;
case 24: words = (width * 3 + 3)/4; break;
default:
WARN("(%d): Unsupported depth\n", depth );
/* fall through */
case 32: words = width; break;
}
return 4 * words;
}
/* get the bitmap info from either an INFOHEADER or COREHEADER bitmap */
static BOOL get_bitmap_info( const void *ptr, LONG *width, LONG *height, WORD *bpp, WORD *compr )
{
const BITMAPINFOHEADER *header = ptr;
switch(header->biSize)
{
case sizeof(BITMAPCOREHEADER):
{
const BITMAPCOREHEADER *core = (const BITMAPCOREHEADER *)header;
*width = core->bcWidth;
*height = core->bcHeight;
*bpp = core->bcBitCount;
*compr = 0;
}
return TRUE;
case sizeof(BITMAPINFOHEADER):
case sizeof(BITMAPV4HEADER):
case sizeof(BITMAPV5HEADER):
/* V4 and V5 structures are a superset of the INFOHEADER structure */
*width = header->biWidth;
*height = header->biHeight;
*bpp = header->biBitCount;
*compr = header->biCompression;
return TRUE;
default:
ERR("(%ld): unknown/wrong size for header\n", header->biSize );
return FALSE;
}
}
/***************************************************************************
* PSDRV_WriteImageHeader
*
* Helper for PSDRV_StretchDIBits
*
* BUGS
* Uses level 2 PostScript
*/
static BOOL PSDRV_WriteImageHeader(PSDRV_PDEVICE *physDev, const BITMAPINFO *info, INT xDst,
INT yDst, INT widthDst, INT heightDst,
INT widthSrc, INT heightSrc)
{
COLORREF map[256];
int i;
switch(info->bmiHeader.biBitCount) {
case 8:
PSDRV_WriteIndexColorSpaceBegin(physDev, 255);
for(i = 0; i < 256; i++) {
map[i] = info->bmiColors[i].rgbRed |
info->bmiColors[i].rgbGreen << 8 |
info->bmiColors[i].rgbBlue << 16;
}
PSDRV_WriteRGB(physDev, map, 256);
PSDRV_WriteIndexColorSpaceEnd(physDev);
break;
case 4:
PSDRV_WriteIndexColorSpaceBegin(physDev, 15);
for(i = 0; i < 16; i++) {
map[i] = info->bmiColors[i].rgbRed |
info->bmiColors[i].rgbGreen << 8 |
info->bmiColors[i].rgbBlue << 16;
}
PSDRV_WriteRGB(physDev, map, 16);
PSDRV_WriteIndexColorSpaceEnd(physDev);
break;
case 1:
PSDRV_WriteIndexColorSpaceBegin(physDev, 1);
for(i = 0; i < 2; i++) {
map[i] = info->bmiColors[i].rgbRed |
info->bmiColors[i].rgbGreen << 8 |
info->bmiColors[i].rgbBlue << 16;
}
PSDRV_WriteRGB(physDev, map, 2);
PSDRV_WriteIndexColorSpaceEnd(physDev);
break;
case 15:
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(physDev, &pscol);
break;
}
default:
FIXME("Not implemented yet\n");
return FALSE;
break;
}
PSDRV_WriteImage(physDev, info->bmiHeader.biBitCount, xDst, yDst,
widthDst, heightDst, widthSrc, heightSrc, FALSE);
return TRUE;
}
/***************************************************************************
* PSDRV_WriteImageMaskHeader
*
* Helper for PSDRV_StretchDIBits
*
* 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(PSDRV_PDEVICE *physDev, const BITMAPINFO *info, INT xDst,
INT yDst, INT widthDst, INT heightDst,
INT widthSrc, INT heightSrc)
{
COLORREF map[2];
PSCOLOR bkgnd, foregnd;
int i;
assert(info->bmiHeader.biBitCount == 1);
for(i = 0; i < 2; i++) {
map[i] = info->bmiColors[i].rgbRed |
info->bmiColors[i].rgbGreen << 8 |
info->bmiColors[i].rgbBlue << 16;
}
/* 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(physDev, &foregnd, map[0]);
PSDRV_CreateColor(physDev, &bkgnd, map[1]);
PSDRV_WriteGSave(physDev);
PSDRV_WriteNewPath(physDev);
PSDRV_WriteRectangle(physDev, xDst, yDst, widthDst, heightDst);
PSDRV_WriteSetColor(physDev, &bkgnd);
PSDRV_WriteFill(physDev);
PSDRV_WriteGRestore(physDev);
PSDRV_WriteSetColor(physDev, &foregnd);
PSDRV_WriteImage(physDev, 1, xDst, yDst, widthDst, heightDst,
widthSrc, heightSrc, TRUE);
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;
}
/***************************************************************************
*
* PSDRV_StretchDIBits
*
* BUGS
* Doesn't work correctly if xSrc isn't byte aligned - this affects 1 and 4
* bit depths.
* Compression not implemented.
*/
INT PSDRV_StretchDIBits( PSDRV_PDEVICE *physDev, INT xDst, INT yDst, INT widthDst,
INT heightDst, INT xSrc, INT ySrc,
INT widthSrc, INT heightSrc, const void *bits,
const BITMAPINFO *info, UINT wUsage, DWORD dwRop )
{
LONG fullSrcWidth, fullSrcHeight;
INT widthbytes;
WORD bpp, compression;
INT line;
POINT pt[2];
const BYTE *src_ptr;
BYTE *dst_ptr, *bitmap, *rle, *ascii85;
DWORD rle_len, ascii85_len, bitmap_size;
TRACE("%p (%d,%d %dx%d) -> (%d,%d %dx%d)\n", physDev->hdc,
xSrc, ySrc, widthSrc, heightSrc, xDst, yDst, widthDst, heightDst);
if (!get_bitmap_info( info, &fullSrcWidth, &fullSrcHeight, &bpp, &compression )) return FALSE;
widthbytes = get_dib_width_bytes(fullSrcWidth, bpp);
TRACE("full size=%ldx%ld bpp=%d compression=%d rop=%08lx\n", fullSrcWidth,
fullSrcHeight, bpp, compression, dwRop);
if(compression != BI_RGB) {
FIXME("Compression not supported\n");
return FALSE;
}
pt[0].x = xDst;
pt[0].y = yDst;
pt[1].x = xDst + widthDst;
pt[1].y = yDst + heightDst;
LPtoDP( physDev->hdc, pt, 2 );
xDst = pt[0].x;
yDst = pt[0].y;
widthDst = pt[1].x - pt[0].x;
heightDst = pt[1].y - pt[0].y;
switch(bpp) {
case 1:
PSDRV_SetClip(physDev);
PSDRV_WriteGSave(physDev);
/* Use imagemask rather than image */
PSDRV_WriteImageMaskHeader(physDev, info, xDst, yDst, widthDst, heightDst,
widthSrc, heightSrc);
src_ptr = bits;
src_ptr += (ySrc * widthbytes);
if(xSrc & 7)
FIXME("This won't work...\n");
bitmap_size = heightSrc * ((widthSrc + 7) / 8);
dst_ptr = bitmap = HeapAlloc(GetProcessHeap(), 0, bitmap_size);
for(line = 0; line < heightSrc; line++, src_ptr += widthbytes, dst_ptr += ((widthSrc + 7) / 8))
memcpy(dst_ptr, src_ptr + xSrc / 8, (widthSrc + 7) / 8);
break;
case 4:
PSDRV_SetClip(physDev);
PSDRV_WriteGSave(physDev);
PSDRV_WriteImageHeader(physDev, info, xDst, yDst, widthDst, heightDst,
widthSrc, heightSrc);
src_ptr = bits;
src_ptr += (ySrc * widthbytes);
if(xSrc & 1)
FIXME("This won't work...\n");
bitmap_size = heightSrc * ((widthSrc + 1) / 2);
dst_ptr = bitmap = HeapAlloc(GetProcessHeap(), 0, bitmap_size);
for(line = 0; line < heightSrc; line++, src_ptr += widthbytes, dst_ptr += ((widthSrc + 1) / 2))
memcpy(dst_ptr, src_ptr + xSrc/2, (widthSrc+1)/2);
break;
case 8:
PSDRV_SetClip(physDev);
PSDRV_WriteGSave(physDev);
PSDRV_WriteImageHeader(physDev, info, xDst, yDst, widthDst, heightDst,
widthSrc, heightSrc);
src_ptr = bits;
src_ptr += (ySrc * widthbytes);
bitmap_size = heightSrc * widthSrc;
dst_ptr = bitmap = HeapAlloc(GetProcessHeap(), 0, bitmap_size);
for(line = 0; line < heightSrc; line++, src_ptr += widthbytes, dst_ptr += widthSrc)
memcpy(dst_ptr, src_ptr + xSrc, widthSrc);
break;
case 15:
case 16:
PSDRV_SetClip(physDev);
PSDRV_WriteGSave(physDev);
PSDRV_WriteImageHeader(physDev, info, xDst, yDst, widthDst, heightDst,
widthSrc, heightSrc);
src_ptr = bits;
src_ptr += (ySrc * widthbytes);
bitmap_size = heightSrc * widthSrc * 3;
dst_ptr = bitmap = HeapAlloc(GetProcessHeap(), 0, bitmap_size);
for(line = 0; line < heightSrc; line++, src_ptr += widthbytes) {
const WORD *words = (const WORD *)src_ptr + xSrc;
int i;
for(i = 0; i < widthSrc; i++) {
BYTE r, g, b;
/* We want 0x0 -- 0x1f to map to 0x0 -- 0xff */
r = words[i] >> 10 & 0x1f;
r = r << 3 | r >> 2;
g = words[i] >> 5 & 0x1f;
g = g << 3 | g >> 2;
b = words[i] & 0x1f;
b = b << 3 | b >> 2;
dst_ptr[0] = r;
dst_ptr[1] = g;
dst_ptr[2] = b;
dst_ptr += 3;
}
}
break;
case 24:
PSDRV_SetClip(physDev);
PSDRV_WriteGSave(physDev);
PSDRV_WriteImageHeader(physDev, info, xDst, yDst, widthDst, heightDst,
widthSrc, heightSrc);
src_ptr = bits;
src_ptr += (ySrc * widthbytes);
bitmap_size = heightSrc * widthSrc * 3;
dst_ptr = bitmap = HeapAlloc(GetProcessHeap(), 0, bitmap_size);
for(line = 0; line < heightSrc; line++, src_ptr += widthbytes) {
const BYTE *byte = src_ptr + xSrc * 3;
int i;
for(i = 0; i < widthSrc; i++) {
dst_ptr[0] = byte[i * 3 + 2];
dst_ptr[1] = byte[i * 3 + 1];
dst_ptr[2] = byte[i * 3];
dst_ptr += 3;
}
}
break;
case 32:
PSDRV_SetClip(physDev);
PSDRV_WriteGSave(physDev);
PSDRV_WriteImageHeader(physDev, info, xDst, yDst, widthDst, heightDst,
widthSrc, heightSrc);
src_ptr = bits;
src_ptr += (ySrc * widthbytes);
bitmap_size = heightSrc * widthSrc * 3;
dst_ptr = bitmap = HeapAlloc(GetProcessHeap(), 0, bitmap_size);
for(line = 0; line < heightSrc; line++, src_ptr += widthbytes) {
const BYTE *byte = src_ptr + xSrc * 4;
int i;
for(i = 0; i < widthSrc; i++) {
dst_ptr[0] = byte[i * 4 + 2];
dst_ptr[1] = byte[i * 4 + 1];
dst_ptr[2] = byte[i * 4];
dst_ptr += 3;
}
}
break;
default:
FIXME("Unsupported depth\n");
return FALSE;
}
rle = HeapAlloc(GetProcessHeap(), 0, max_rle_size(bitmap_size));
rle_len = RLE_encode(bitmap, bitmap_size, rle);
HeapFree(GetProcessHeap(), 0, bitmap);
ascii85 = HeapAlloc(GetProcessHeap(), 0, max_ascii85_size(rle_len));
ascii85_len = ASCII85_encode(rle, rle_len, ascii85);
HeapFree(GetProcessHeap(), 0, rle);
PSDRV_WriteData(physDev, ascii85, ascii85_len);
HeapFree(GetProcessHeap(), 0, ascii85);
PSDRV_WriteSpool(physDev, "~>\n", 3);
PSDRV_WriteGRestore(physDev);
PSDRV_ResetClip(physDev);
return abs(heightSrc);
}