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1429 lines
50 KiB
C
1429 lines
50 KiB
C
/*
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* DIB conversion routinues for cases where the source and destination
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* have the same byte order.
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*
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* Copyright (C) 2001 Francois Gouget
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "config.h"
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#include <stdlib.h>
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#include "windef.h"
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#include "x11drv.h"
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/***********************************************************************
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* X11DRV_DIB_Convert_*
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*
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* All X11DRV_DIB_Convert_Xxx functions take at least the following
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* parameters:
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* - width
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* This is the width in pixel of the surface to copy. This may be less
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* than the full width of the image.
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* - height
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* The number of lines to copy. This may be less than the full height
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* of the image. This is always >0.
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* - srcbits
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* Points to the first byte containing data to be copied. If the source
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* surface starts are coordinates (x,y) then this is:
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* image_ptr+x*bytes_pre_pixel+y*bytes_per_line
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* (with further adjustments for top-down/bottom-up images)
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* - srclinebytes
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* This is the number of bytes per line. It may be >0 or <0 depending on
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* whether this is a top-down or bottom-up image.
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* - dstbits
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* Same as srcbits but for the destination
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* - dstlinebytes
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* Same as srclinebytes but for the destination.
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*
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* Notes:
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* - The supported Dib formats are: pal1, pal4, pal8, rgb555, bgr555,
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* rgb565, bgr565, rgb888 and any 32bit (0888) format.
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* The supported XImage (Bmp) formats are: pal1, pal4, pal8,
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* rgb555, bgr555, rgb565, bgr565, rgb888, bgr888, rgb0888, bgr0888.
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* - Rgb formats are those for which the masks are such that:
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* red_mask > green_mask > blue_mask
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* - Bgr formats are those for which the masks sort in the other direction.
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* - Many conversion functions handle both rgb->bgr and bgr->rgb conversions
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* so the comments use h, g, l to mean respectively the source color in the
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* high bits, the green, and the source color in the low bits.
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*/
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/*
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* 15 bit conversions
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*/
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static void convert_5x5_asis(int width, int height,
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const void* srcbits, int srclinebytes,
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void* dstbits, int dstlinebytes)
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{
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int y;
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width *= 2;
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if (srclinebytes == dstlinebytes && srclinebytes == width)
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{
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memcpy(dstbits, srcbits, height * width);
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return;
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}
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for (y=0; y<height; y++) {
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memcpy(dstbits, srcbits, width);
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srcbits = (const char*)srcbits + srclinebytes;
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dstbits = (char*)dstbits + dstlinebytes;
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}
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}
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static void convert_555_reverse(int width, int height,
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const void* srcbits, int srclinebytes,
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void* dstbits, int dstlinebytes)
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{
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const DWORD* srcpixel;
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DWORD* dstpixel;
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int x,y;
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for (y=0; y<height; y++) {
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srcpixel=srcbits;
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dstpixel=dstbits;
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for (x=0; x<width/2; x++) {
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/* Do 2 pixels at a time */
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DWORD srcval;
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srcval=*srcpixel++;
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*dstpixel++=((srcval << 10) & 0x7c007c00) | /* h */
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( srcval & 0x03e003e0) | /* g */
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((srcval >> 10) & 0x001f001f); /* l */
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}
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if (width&1) {
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/* And the the odd pixel */
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WORD srcval;
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srcval=*((const WORD*)srcpixel);
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*((WORD*)dstpixel)=((srcval << 10) & 0x7c00) | /* h */
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( srcval & 0x03e0) | /* g */
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((srcval >> 10) & 0x001f); /* l */
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}
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srcbits = (const char*)srcbits + srclinebytes;
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dstbits = (char*)dstbits + dstlinebytes;
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}
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}
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static void convert_555_to_565_asis(int width, int height,
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const void* srcbits, int srclinebytes,
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void* dstbits, int dstlinebytes)
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{
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const DWORD* srcpixel;
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DWORD* dstpixel;
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int x,y;
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for (y=0; y<height; y++) {
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srcpixel=srcbits;
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dstpixel=dstbits;
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for (x=0; x<width/2; x++) {
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/* Do 2 pixels at a time */
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DWORD srcval;
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srcval=*srcpixel++;
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*dstpixel++=((srcval << 1) & 0xffc0ffc0) | /* h, g */
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((srcval >> 4) & 0x00200020) | /* g - 1 bit */
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( srcval & 0x001f001f); /* l */
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}
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if (width&1) {
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/* And the the odd pixel */
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WORD srcval;
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srcval=*((const WORD*)srcpixel);
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*((WORD*)dstpixel)=((srcval << 1) & 0xffc0) | /* h, g */
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((srcval >> 4) & 0x0020) | /* g - 1 bit */
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(srcval & 0x001f); /* l */
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}
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srcbits = (const char*)srcbits + srclinebytes;
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dstbits = (char*)dstbits + dstlinebytes;
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}
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}
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static void convert_555_to_565_reverse(int width, int height,
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const void* srcbits, int srclinebytes,
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void* dstbits, int dstlinebytes)
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{
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const DWORD* srcpixel;
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DWORD* dstpixel;
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int x,y;
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for (y=0; y<height; y++) {
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srcpixel=srcbits;
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dstpixel=dstbits;
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for (x=0; x<width/2; x++) {
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/* Do 2 pixels at a time */
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DWORD srcval;
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srcval=*srcpixel++;
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*dstpixel++=((srcval >> 10) & 0x001f001f) | /* h */
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((srcval << 1) & 0x07c007c0) | /* g */
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((srcval >> 4) & 0x00200020) | /* g - 1 bit */
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((srcval << 11) & 0xf800f800); /* l */
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}
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if (width&1) {
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/* And the the odd pixel */
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WORD srcval;
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srcval=*((const WORD*)srcpixel);
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*((WORD*)dstpixel)=((srcval >> 10) & 0x001f) | /* h */
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((srcval << 1) & 0x07c0) | /* g */
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((srcval >> 4) & 0x0020) | /* g - 1 bit */
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((srcval << 11) & 0xf800); /* l */
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}
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srcbits = (const char*)srcbits + srclinebytes;
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dstbits = (char*)dstbits + dstlinebytes;
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}
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}
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static void convert_555_to_888_asis(int width, int height,
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const void* srcbits, int srclinebytes,
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void* dstbits, int dstlinebytes)
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{
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const WORD* srcpixel;
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BYTE* dstpixel;
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int x,y;
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for (y=0; y<height; y++) {
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srcpixel=srcbits;
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dstpixel=dstbits;
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for (x=0; x<width; x++) {
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WORD srcval;
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srcval=*srcpixel++;
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dstpixel[0]=((srcval << 3) & 0xf8) | /* l */
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((srcval >> 2) & 0x07); /* l - 3 bits */
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dstpixel[1]=((srcval >> 2) & 0xf8) | /* g */
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((srcval >> 7) & 0x07); /* g - 3 bits */
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dstpixel[2]=((srcval >> 7) & 0xf8) | /* h */
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((srcval >> 12) & 0x07); /* h - 3 bits */
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dstpixel+=3;
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}
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srcbits = (const char*)srcbits + srclinebytes;
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dstbits = (char*)dstbits + dstlinebytes;
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}
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}
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static void convert_555_to_888_reverse(int width, int height,
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const void* srcbits, int srclinebytes,
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void* dstbits, int dstlinebytes)
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{
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const WORD* srcpixel;
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BYTE* dstpixel;
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int x,y;
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for (y=0; y<height; y++) {
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srcpixel=srcbits;
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dstpixel=dstbits;
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for (x=0; x<width; x++) {
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WORD srcval;
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srcval=*srcpixel++;
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dstpixel[0]=((srcval >> 7) & 0xf8) | /* h */
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((srcval >> 12) & 0x07); /* h - 3 bits */
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dstpixel[1]=((srcval >> 2) & 0xf8) | /* g */
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((srcval >> 7) & 0x07); /* g - 3 bits */
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dstpixel[2]=((srcval << 3) & 0xf8) | /* l */
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((srcval >> 2) & 0x07); /* l - 3 bits */
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dstpixel+=3;
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}
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srcbits = (const char*)srcbits + srclinebytes;
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dstbits = (char*)dstbits + dstlinebytes;
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}
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}
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static void convert_555_to_0888_asis(int width, int height,
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const void* srcbits, int srclinebytes,
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void* dstbits, int dstlinebytes)
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{
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const WORD* srcpixel;
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DWORD* dstpixel;
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int x,y;
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for (y=0; y<height; y++) {
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srcpixel=srcbits;
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dstpixel=dstbits;
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for (x=0; x<width; x++) {
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WORD srcval;
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srcval=*srcpixel++;
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*dstpixel++=((srcval << 9) & 0xf80000) | /* h */
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((srcval << 4) & 0x070000) | /* h - 3 bits */
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((srcval << 6) & 0x00f800) | /* g */
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((srcval << 1) & 0x000700) | /* g - 3 bits */
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((srcval << 3) & 0x0000f8) | /* l */
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((srcval >> 2) & 0x000007); /* l - 3 bits */
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}
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srcbits = (const char*)srcbits + srclinebytes;
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dstbits = (char*)dstbits + dstlinebytes;
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}
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}
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static void convert_555_to_0888_reverse(int width, int height,
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const void* srcbits, int srclinebytes,
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void* dstbits, int dstlinebytes)
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{
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const WORD* srcpixel;
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DWORD* dstpixel;
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int x,y;
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for (y=0; y<height; y++) {
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srcpixel=srcbits;
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dstpixel=dstbits;
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for (x=0; x<width; x++) {
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WORD srcval;
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srcval=*srcpixel++;
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*dstpixel++=((srcval >> 7) & 0x0000f8) | /* h */
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((srcval >> 12) & 0x000007) | /* h - 3 bits */
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((srcval << 6) & 0x00f800) | /* g */
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((srcval << 1) & 0x000700) | /* g - 3 bits */
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((srcval << 19) & 0xf80000) | /* l */
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((srcval << 14) & 0x070000); /* l - 3 bits */
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}
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srcbits = (const char*)srcbits + srclinebytes;
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dstbits = (char*)dstbits + dstlinebytes;
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}
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}
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static void convert_5x5_to_any0888(int width, int height,
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const void* srcbits, int srclinebytes,
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WORD rsrc, WORD gsrc, WORD bsrc,
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void* dstbits, int dstlinebytes,
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DWORD rdst, DWORD gdst, DWORD bdst)
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{
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int rRightShift1,gRightShift1,bRightShift1;
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int rRightShift2,gRightShift2,bRightShift2;
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BYTE gMask1,gMask2;
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int rLeftShift,gLeftShift,bLeftShift;
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const WORD* srcpixel;
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DWORD* dstpixel;
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int x,y;
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/* Note, the source pixel value is shifted left by 16 bits so that
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* we know we will always have to shift right to extract the components.
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*/
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rRightShift1=16+X11DRV_DIB_MaskToShift(rsrc)-3;
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gRightShift1=16+X11DRV_DIB_MaskToShift(gsrc)-3;
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bRightShift1=16+X11DRV_DIB_MaskToShift(bsrc)-3;
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rRightShift2=rRightShift1+5;
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gRightShift2=gRightShift1+5;
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bRightShift2=bRightShift1+5;
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if (gsrc==0x03e0) {
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/* Green has 5 bits, like the others */
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gMask1=0xf8;
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gMask2=0x07;
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} else {
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/* Green has 6 bits, not 5. Compensate. */
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gRightShift1++;
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gRightShift2+=2;
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gMask1=0xfc;
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gMask2=0x03;
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}
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rLeftShift=X11DRV_DIB_MaskToShift(rdst);
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gLeftShift=X11DRV_DIB_MaskToShift(gdst);
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bLeftShift=X11DRV_DIB_MaskToShift(bdst);
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for (y=0; y<height; y++) {
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srcpixel=srcbits;
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dstpixel=dstbits;
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for (x=0; x<width; x++) {
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DWORD srcval;
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BYTE red,green,blue;
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srcval=*srcpixel++ << 16;
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red= ((srcval >> rRightShift1) & 0xf8) |
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((srcval >> rRightShift2) & 0x07);
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green=((srcval >> gRightShift1) & gMask1) |
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((srcval >> gRightShift2) & gMask2);
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blue= ((srcval >> bRightShift1) & 0xf8) |
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((srcval >> bRightShift2) & 0x07);
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*dstpixel++=(red << rLeftShift) |
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(green << gLeftShift) |
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(blue << bLeftShift);
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}
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srcbits = (const char*)srcbits + srclinebytes;
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dstbits = (char*)dstbits + dstlinebytes;
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}
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}
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/*
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* 16 bits conversions
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*/
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static void convert_565_reverse(int width, int height,
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const void* srcbits, int srclinebytes,
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void* dstbits, int dstlinebytes)
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{
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const DWORD* srcpixel;
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DWORD* dstpixel;
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int x,y;
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for (y=0; y<height; y++) {
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srcpixel=srcbits;
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dstpixel=dstbits;
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for (x=0; x<width/2; x++) {
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/* Do 2 pixels at a time */
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DWORD srcval;
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srcval=*srcpixel++;
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*dstpixel++=((srcval << 11) & 0xf800f800) | /* h */
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( srcval & 0x07e007e0) | /* g */
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((srcval >> 11) & 0x001f001f); /* l */
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}
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if (width&1) {
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/* And the the odd pixel */
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WORD srcval;
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srcval=*((const WORD*)srcpixel);
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*((WORD*)dstpixel)=((srcval << 11) & 0xf800) | /* h */
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( srcval & 0x07e0) | /* g */
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((srcval >> 11) & 0x001f); /* l */
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}
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srcbits = (const char*)srcbits + srclinebytes;
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dstbits = (char*)dstbits + dstlinebytes;
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}
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}
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static void convert_565_to_555_asis(int width, int height,
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const void* srcbits, int srclinebytes,
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void* dstbits, int dstlinebytes)
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{
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const DWORD* srcpixel;
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DWORD* dstpixel;
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int x,y;
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for (y=0; y<height; y++) {
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srcpixel=srcbits;
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dstpixel=dstbits;
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for (x=0; x<width/2; x++) {
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/* Do 2 pixels at a time */
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DWORD srcval;
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srcval=*srcpixel++;
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*dstpixel++=((srcval >> 1) & 0x7fe07fe0) | /* h, g */
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( srcval & 0x001f001f); /* l */
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}
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if (width&1) {
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/* And the the odd pixel */
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WORD srcval;
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srcval=*((const WORD*)srcpixel);
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*((WORD*)dstpixel)=((srcval >> 1) & 0x7fe0) | /* h, g */
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( srcval & 0x001f); /* l */
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}
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srcbits = (const char*)srcbits + srclinebytes;
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dstbits = (char*)dstbits + dstlinebytes;
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}
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}
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static void convert_565_to_555_reverse(int width, int height,
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const void* srcbits, int srclinebytes,
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void* dstbits, int dstlinebytes)
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{
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const DWORD* srcpixel;
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DWORD* dstpixel;
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int x,y;
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for (y=0; y<height; y++) {
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srcpixel=srcbits;
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dstpixel=dstbits;
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for (x=0; x<width/2; x++) {
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/* Do 2 pixels at a time */
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DWORD srcval;
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srcval=*srcpixel++;
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*dstpixel++=((srcval >> 11) & 0x001f001f) | /* h */
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((srcval >> 1) & 0x03e003e0) | /* g */
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((srcval << 10) & 0x7c007c00); /* l */
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}
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if (width&1) {
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/* And the the odd pixel */
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WORD srcval;
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srcval=*((const WORD*)srcpixel);
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*((WORD*)dstpixel)=((srcval >> 11) & 0x001f) | /* h */
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((srcval >> 1) & 0x03e0) | /* g */
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((srcval << 10) & 0x7c00); /* l */
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}
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srcbits = (const char*)srcbits + srclinebytes;
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dstbits = (char*)dstbits + dstlinebytes;
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}
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}
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static void convert_565_to_888_asis(int width, int height,
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const void* srcbits, int srclinebytes,
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void* dstbits, int dstlinebytes)
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{
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const WORD* srcpixel;
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BYTE* dstpixel;
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int x,y;
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for (y=0; y<height; y++) {
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srcpixel=srcbits;
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dstpixel=dstbits;
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for (x=0; x<width; x++) {
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WORD srcval;
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srcval=*srcpixel++;
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dstpixel[0]=((srcval << 3) & 0xf8) | /* l */
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((srcval >> 2) & 0x07); /* l - 3 bits */
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dstpixel[1]=((srcval >> 3) & 0xfc) | /* g */
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((srcval >> 9) & 0x03); /* g - 2 bits */
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dstpixel[2]=((srcval >> 8) & 0xf8) | /* h */
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((srcval >> 13) & 0x07); /* h - 3 bits */
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dstpixel+=3;
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}
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|
srcbits = (const char*)srcbits + srclinebytes;
|
|
dstbits = (char*)dstbits + dstlinebytes;
|
|
}
|
|
}
|
|
|
|
static void convert_565_to_888_reverse(int width, int height,
|
|
const void* srcbits, int srclinebytes,
|
|
void* dstbits, int dstlinebytes)
|
|
{
|
|
const WORD* srcpixel;
|
|
BYTE* dstpixel;
|
|
int x,y;
|
|
|
|
for (y=0; y<height; y++) {
|
|
srcpixel=srcbits;
|
|
dstpixel=dstbits;
|
|
for (x=0; x<width; x++) {
|
|
WORD srcval;
|
|
srcval=*srcpixel++;
|
|
dstpixel[0]=((srcval >> 8) & 0xf8) | /* h */
|
|
((srcval >> 13) & 0x07); /* h - 3 bits */
|
|
dstpixel[1]=((srcval >> 3) & 0xfc) | /* g */
|
|
((srcval >> 9) & 0x03); /* g - 2 bits */
|
|
dstpixel[2]=((srcval << 3) & 0xf8) | /* l */
|
|
((srcval >> 2) & 0x07); /* l - 3 bits */
|
|
dstpixel+=3;
|
|
}
|
|
srcbits = (const char*)srcbits + srclinebytes;
|
|
dstbits = (char*)dstbits + dstlinebytes;
|
|
}
|
|
}
|
|
|
|
static void convert_565_to_0888_asis(int width, int height,
|
|
const void* srcbits, int srclinebytes,
|
|
void* dstbits, int dstlinebytes)
|
|
{
|
|
const WORD* srcpixel;
|
|
DWORD* dstpixel;
|
|
int x,y;
|
|
|
|
for (y=0; y<height; y++) {
|
|
srcpixel=srcbits;
|
|
dstpixel=dstbits;
|
|
for (x=0; x<width; x++) {
|
|
WORD srcval;
|
|
srcval=*srcpixel++;
|
|
*dstpixel++=((srcval << 8) & 0xf80000) | /* h */
|
|
((srcval << 3) & 0x070000) | /* h - 3 bits */
|
|
((srcval << 5) & 0x00fc00) | /* g */
|
|
((srcval >> 1) & 0x000300) | /* g - 2 bits */
|
|
((srcval << 3) & 0x0000f8) | /* l */
|
|
((srcval >> 2) & 0x000007); /* l - 3 bits */
|
|
}
|
|
srcbits = (const char*)srcbits + srclinebytes;
|
|
dstbits = (char*)dstbits + dstlinebytes;
|
|
}
|
|
}
|
|
|
|
static void convert_565_to_0888_reverse(int width, int height,
|
|
const void* srcbits, int srclinebytes,
|
|
void* dstbits, int dstlinebytes)
|
|
{
|
|
const WORD* srcpixel;
|
|
DWORD* dstpixel;
|
|
int x,y;
|
|
|
|
for (y=0; y<height; y++) {
|
|
srcpixel=srcbits;
|
|
dstpixel=dstbits;
|
|
for (x=0; x<width; x++) {
|
|
WORD srcval;
|
|
srcval=*srcpixel++;
|
|
*dstpixel++=((srcval >> 8) & 0x0000f8) | /* h */
|
|
((srcval >> 13) & 0x000007) | /* h - 3 bits */
|
|
((srcval << 5) & 0x00fc00) | /* g */
|
|
((srcval >> 1) & 0x000300) | /* g - 2 bits */
|
|
((srcval << 19) & 0xf80000) | /* l */
|
|
((srcval << 14) & 0x070000); /* l - 3 bits */
|
|
}
|
|
srcbits = (const char*)srcbits + srclinebytes;
|
|
dstbits = (char*)dstbits + dstlinebytes;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* 24 bit conversions
|
|
*/
|
|
|
|
static void convert_888_asis(int width, int height,
|
|
const void* srcbits, int srclinebytes,
|
|
void* dstbits, int dstlinebytes)
|
|
{
|
|
int y;
|
|
|
|
width *= 3;
|
|
|
|
if (srclinebytes == dstlinebytes && srclinebytes == width)
|
|
{
|
|
memcpy(dstbits, srcbits, height * width);
|
|
return;
|
|
}
|
|
|
|
for (y=0; y<height; y++) {
|
|
memcpy(dstbits, srcbits, width);
|
|
srcbits = (const char*)srcbits + srclinebytes;
|
|
dstbits = (char*)dstbits + dstlinebytes;
|
|
}
|
|
}
|
|
|
|
|
|
static void convert_888_reverse(int width, int height,
|
|
const void* srcbits, int srclinebytes,
|
|
void* dstbits, int dstlinebytes)
|
|
{
|
|
const BYTE* srcpixel;
|
|
BYTE* dstpixel;
|
|
int x,y;
|
|
|
|
for (y=0; y<height; y++) {
|
|
srcpixel=srcbits;
|
|
dstpixel=dstbits;
|
|
for (x=0; x<width; x++) {
|
|
dstpixel[0]=srcpixel[2];
|
|
dstpixel[1]=srcpixel[1];
|
|
dstpixel[2]=srcpixel[0];
|
|
srcpixel+=3;
|
|
dstpixel+=3;
|
|
}
|
|
srcbits = (const char*)srcbits + srclinebytes;
|
|
dstbits = (char*)dstbits + dstlinebytes;
|
|
}
|
|
}
|
|
|
|
static void convert_888_to_555_asis(int width, int height,
|
|
const void* srcbits, int srclinebytes,
|
|
void* dstbits, int dstlinebytes)
|
|
{
|
|
const DWORD* srcpixel;
|
|
const BYTE* srcbyte;
|
|
WORD* dstpixel;
|
|
int x,y;
|
|
int oddwidth;
|
|
|
|
oddwidth=width & 3;
|
|
width=width/4;
|
|
for (y=0; y<height; y++) {
|
|
srcpixel=srcbits;
|
|
dstpixel=dstbits;
|
|
for (x=0; x<width; x++) {
|
|
/* Do 4 pixels at a time: 3 dwords in and 4 words out */
|
|
DWORD srcval1,srcval2;
|
|
srcval1=srcpixel[0];
|
|
dstpixel[0]=((srcval1 >> 3) & 0x001f) | /* l1 */
|
|
((srcval1 >> 6) & 0x03e0) | /* g1 */
|
|
((srcval1 >> 9) & 0x7c00); /* h1 */
|
|
srcval2=srcpixel[1];
|
|
dstpixel[1]=((srcval1 >> 27) & 0x001f) | /* l2 */
|
|
((srcval2 << 2) & 0x03e0) | /* g2 */
|
|
((srcval2 >> 1) & 0x7c00); /* h2 */
|
|
srcval1=srcpixel[2];
|
|
dstpixel[2]=((srcval2 >> 19) & 0x001f) | /* l3 */
|
|
((srcval2 >> 22) & 0x03e0) | /* g3 */
|
|
((srcval1 << 7) & 0x7c00); /* h3 */
|
|
dstpixel[3]=((srcval1 >> 11) & 0x001f) | /* l4 */
|
|
((srcval1 >> 14) & 0x03e0) | /* g4 */
|
|
((srcval1 >> 17) & 0x7c00); /* h4 */
|
|
srcpixel+=3;
|
|
dstpixel+=4;
|
|
}
|
|
/* And now up to 3 odd pixels */
|
|
srcbyte=(const BYTE*)srcpixel;
|
|
for (x=0; x<oddwidth; x++) {
|
|
WORD dstval;
|
|
dstval =((srcbyte[0] >> 3) & 0x001f); /* l */
|
|
dstval|=((srcbyte[1] << 2) & 0x03e0); /* g */
|
|
dstval|=((srcbyte[2] << 7) & 0x7c00); /* h */
|
|
*dstpixel++=dstval;
|
|
srcbyte+=3;
|
|
}
|
|
srcbits = (const char*)srcbits + srclinebytes;
|
|
dstbits = (char*)dstbits + dstlinebytes;
|
|
}
|
|
}
|
|
|
|
static void convert_888_to_555_reverse(int width, int height,
|
|
const void* srcbits, int srclinebytes,
|
|
void* dstbits, int dstlinebytes)
|
|
{
|
|
const DWORD* srcpixel;
|
|
const BYTE* srcbyte;
|
|
WORD* dstpixel;
|
|
int x,y;
|
|
int oddwidth;
|
|
|
|
oddwidth=width & 3;
|
|
width=width/4;
|
|
for (y=0; y<height; y++) {
|
|
srcpixel=srcbits;
|
|
dstpixel=dstbits;
|
|
for (x=0; x<width; x++) {
|
|
/* Do 4 pixels at a time: 3 dwords in and 4 words out */
|
|
DWORD srcval1,srcval2;
|
|
srcval1=srcpixel[0];
|
|
dstpixel[0]=((srcval1 << 7) & 0x7c00) | /* l1 */
|
|
((srcval1 >> 6) & 0x03e0) | /* g1 */
|
|
((srcval1 >> 19) & 0x001f); /* h1 */
|
|
srcval2=srcpixel[1];
|
|
dstpixel[1]=((srcval1 >> 17) & 0x7c00) | /* l2 */
|
|
((srcval2 << 2) & 0x03e0) | /* g2 */
|
|
((srcval2 >> 11) & 0x001f); /* h2 */
|
|
srcval1=srcpixel[2];
|
|
dstpixel[2]=((srcval2 >> 9) & 0x7c00) | /* l3 */
|
|
((srcval2 >> 22) & 0x03e0) | /* g3 */
|
|
((srcval1 >> 3) & 0x001f); /* h3 */
|
|
dstpixel[3]=((srcval1 >> 1) & 0x7c00) | /* l4 */
|
|
((srcval1 >> 14) & 0x03e0) | /* g4 */
|
|
((srcval1 >> 27) & 0x001f); /* h4 */
|
|
srcpixel+=3;
|
|
dstpixel+=4;
|
|
}
|
|
/* And now up to 3 odd pixels */
|
|
srcbyte=(const BYTE*)srcpixel;
|
|
for (x=0; x<oddwidth; x++) {
|
|
WORD dstval;
|
|
dstval =((srcbyte[0] << 7) & 0x7c00); /* l */
|
|
dstval|=((srcbyte[1] << 2) & 0x03e0); /* g */
|
|
dstval|=((srcbyte[2] >> 3) & 0x001f); /* h */
|
|
*dstpixel++=dstval;
|
|
srcbyte+=3;
|
|
}
|
|
srcbits = (const char*)srcbits + srclinebytes;
|
|
dstbits = (char*)dstbits + dstlinebytes;
|
|
}
|
|
}
|
|
|
|
static void convert_888_to_565_asis(int width, int height,
|
|
const void* srcbits, int srclinebytes,
|
|
void* dstbits, int dstlinebytes)
|
|
{
|
|
const DWORD* srcpixel;
|
|
const BYTE* srcbyte;
|
|
WORD* dstpixel;
|
|
int x,y;
|
|
int oddwidth;
|
|
|
|
oddwidth=width & 3;
|
|
width=width/4;
|
|
for (y=0; y<height; y++) {
|
|
srcpixel=srcbits;
|
|
dstpixel=dstbits;
|
|
for (x=0; x<width; x++) {
|
|
/* Do 4 pixels at a time: 3 dwords in and 4 words out */
|
|
DWORD srcval1,srcval2;
|
|
srcval1=srcpixel[0];
|
|
dstpixel[0]=((srcval1 >> 3) & 0x001f) | /* l1 */
|
|
((srcval1 >> 5) & 0x07e0) | /* g1 */
|
|
((srcval1 >> 8) & 0xf800); /* h1 */
|
|
srcval2=srcpixel[1];
|
|
dstpixel[1]=((srcval1 >> 27) & 0x001f) | /* l2 */
|
|
((srcval2 << 3) & 0x07e0) | /* g2 */
|
|
( srcval2 & 0xf800); /* h2 */
|
|
srcval1=srcpixel[2];
|
|
dstpixel[2]=((srcval2 >> 19) & 0x001f) | /* l3 */
|
|
((srcval2 >> 21) & 0x07e0) | /* g3 */
|
|
((srcval1 << 8) & 0xf800); /* h3 */
|
|
dstpixel[3]=((srcval1 >> 11) & 0x001f) | /* l4 */
|
|
((srcval1 >> 13) & 0x07e0) | /* g4 */
|
|
((srcval1 >> 16) & 0xf800); /* h4 */
|
|
srcpixel+=3;
|
|
dstpixel+=4;
|
|
}
|
|
/* And now up to 3 odd pixels */
|
|
srcbyte=(const BYTE*)srcpixel;
|
|
for (x=0; x<oddwidth; x++) {
|
|
WORD dstval;
|
|
dstval =((srcbyte[0] >> 3) & 0x001f); /* l */
|
|
dstval|=((srcbyte[1] << 3) & 0x07e0); /* g */
|
|
dstval|=((srcbyte[2] << 8) & 0xf800); /* h */
|
|
*dstpixel++=dstval;
|
|
srcbyte+=3;
|
|
}
|
|
srcbits = (const char*)srcbits + srclinebytes;
|
|
dstbits = (char*)dstbits + dstlinebytes;
|
|
}
|
|
}
|
|
|
|
static void convert_888_to_565_reverse(int width, int height,
|
|
const void* srcbits, int srclinebytes,
|
|
void* dstbits, int dstlinebytes)
|
|
{
|
|
const DWORD* srcpixel;
|
|
const BYTE* srcbyte;
|
|
WORD* dstpixel;
|
|
int x,y;
|
|
int oddwidth;
|
|
|
|
oddwidth=width & 3;
|
|
width=width/4;
|
|
for (y=0; y<height; y++) {
|
|
srcpixel=srcbits;
|
|
dstpixel=dstbits;
|
|
for (x=0; x<width; x++) {
|
|
/* Do 4 pixels at a time: 3 dwords in and 4 words out */
|
|
DWORD srcval1,srcval2;
|
|
srcval1=srcpixel[0];
|
|
dstpixel[0]=((srcval1 << 8) & 0xf800) | /* l1 */
|
|
((srcval1 >> 5) & 0x07e0) | /* g1 */
|
|
((srcval1 >> 19) & 0x001f); /* h1 */
|
|
srcval2=srcpixel[1];
|
|
dstpixel[1]=((srcval1 >> 16) & 0xf800) | /* l2 */
|
|
((srcval2 << 3) & 0x07e0) | /* g2 */
|
|
((srcval2 >> 11) & 0x001f); /* h2 */
|
|
srcval1=srcpixel[2];
|
|
dstpixel[2]=((srcval2 >> 8) & 0xf800) | /* l3 */
|
|
((srcval2 >> 21) & 0x07e0) | /* g3 */
|
|
((srcval1 >> 3) & 0x001f); /* h3 */
|
|
dstpixel[3]=(srcval1 & 0xf800) | /* l4 */
|
|
((srcval1 >> 13) & 0x07e0) | /* g4 */
|
|
((srcval1 >> 27) & 0x001f); /* h4 */
|
|
srcpixel+=3;
|
|
dstpixel+=4;
|
|
}
|
|
/* And now up to 3 odd pixels */
|
|
srcbyte=(const BYTE*)srcpixel;
|
|
for (x=0; x<oddwidth; x++) {
|
|
WORD dstval;
|
|
dstval =((srcbyte[0] << 8) & 0xf800); /* l */
|
|
dstval|=((srcbyte[1] << 3) & 0x07e0); /* g */
|
|
dstval|=((srcbyte[2] >> 3) & 0x001f); /* h */
|
|
*dstpixel++=dstval;
|
|
srcbyte+=3;
|
|
}
|
|
srcbits = (const char*)srcbits + srclinebytes;
|
|
dstbits = (char*)dstbits + dstlinebytes;
|
|
}
|
|
}
|
|
|
|
static void convert_888_to_0888_asis(int width, int height,
|
|
const void* srcbits, int srclinebytes,
|
|
void* dstbits, int dstlinebytes)
|
|
{
|
|
const DWORD* srcpixel;
|
|
DWORD* dstpixel;
|
|
int x,y;
|
|
int w1, w2, w3;
|
|
|
|
w1 = min( (INT_PTR)srcbits & 3, width);
|
|
w2 = ( width - w1) / 4;
|
|
w3 = ( width - w1) & 3;
|
|
for (y=0; y<height; y++) {
|
|
srcpixel=srcbits;
|
|
dstpixel=dstbits;
|
|
/* advance w1 pixels to make srcpixel 32 bit alignd */
|
|
srcpixel = (const DWORD*)((INT_PTR)srcpixel & ~3);
|
|
srcpixel += w1;
|
|
dstpixel += w1;
|
|
/* and do the w1 pixels */
|
|
x = w1;
|
|
if( x) {
|
|
dstpixel[ -1] = ( srcpixel[ -1] >> 8); /* h4, g4, l4 */
|
|
if( --x) {
|
|
dstpixel[ -2] = ( srcpixel[ -2] >> 16) | /* g3, l3 */
|
|
((srcpixel[ -1] << 16) & 0x00ff0000); /* h3 */
|
|
if( --x) {
|
|
dstpixel[ -3] = ( srcpixel[ -3] >> 24) | /* l2 */
|
|
((srcpixel[ -2] << 8) & 0x00ffff00); /* h2, g2 */
|
|
}
|
|
}
|
|
}
|
|
for (x=0; x < w2; x++) {
|
|
/* Do 4 pixels at a time: 3 dwords in and 4 dwords out */
|
|
DWORD srcval1,srcval2;
|
|
srcval1=srcpixel[0];
|
|
dstpixel[0]=( srcval1 & 0x00ffffff); /* h1, g1, l1 */
|
|
srcval2=srcpixel[1];
|
|
dstpixel[1]=( srcval1 >> 24) | /* l2 */
|
|
((srcval2 << 8) & 0x00ffff00); /* h2, g2 */
|
|
srcval1=srcpixel[2];
|
|
dstpixel[2]=( srcval2 >> 16) | /* g3, l3 */
|
|
((srcval1 << 16) & 0x00ff0000); /* h3 */
|
|
dstpixel[3]=( srcval1 >> 8); /* h4, g4, l4 */
|
|
srcpixel+=3;
|
|
dstpixel+=4;
|
|
}
|
|
/* do last w3 pixels */
|
|
x = w3;
|
|
if( x) {
|
|
dstpixel[0]=( srcpixel[0] & 0x00ffffff); /* h1, g1, l1 */
|
|
if( --x) {
|
|
dstpixel[1]=( srcpixel[0]>> 24) | /* l2 */
|
|
((srcpixel[1]<< 8) & 0x00ffff00); /* h2, g2 */
|
|
if( --x) {
|
|
dstpixel[2]=( srcpixel[1]>> 16) | /* g3, l3 */
|
|
((srcpixel[2]<< 16) & 0x00ff0000); /* h3 */
|
|
}
|
|
}
|
|
}
|
|
srcbits = (const char*)srcbits + srclinebytes;
|
|
dstbits = (char*)dstbits + dstlinebytes;
|
|
}
|
|
}
|
|
|
|
static void convert_888_to_0888_reverse(int width, int height,
|
|
const void* srcbits, int srclinebytes,
|
|
void* dstbits, int dstlinebytes)
|
|
{
|
|
const DWORD* srcpixel;
|
|
DWORD* dstpixel;
|
|
int x,y;
|
|
int w1, w2, w3;
|
|
|
|
w1 = min( (INT_PTR)srcbits & 3, width);
|
|
w2 = ( width - w1) / 4;
|
|
w3 = ( width - w1) & 3;
|
|
for (y=0; y<height; y++) {
|
|
srcpixel=srcbits;
|
|
dstpixel=dstbits;
|
|
/* advance w1 pixels to make srcpixel 32 bit alignd */
|
|
srcpixel = (const DWORD*)((INT_PTR)srcpixel & ~3);
|
|
srcpixel += w1;
|
|
dstpixel += w1;
|
|
/* and do the w1 pixels */
|
|
x = w1;
|
|
if( x) {
|
|
dstpixel[ -1]=((srcpixel[ -1] >> 24) & 0x0000ff) | /* h4 */
|
|
((srcpixel[ -1] >> 8) & 0x00ff00) | /* g4 */
|
|
((srcpixel[ -1] << 8) & 0xff0000); /* l4 */
|
|
if( --x) {
|
|
dstpixel[ -2]=( srcpixel[ -2] & 0xff0000) | /* l3 */
|
|
((srcpixel[ -2] >> 16) & 0x00ff00) | /* g3 */
|
|
( srcpixel[ -1] & 0x0000ff); /* h3 */
|
|
if( --x) {
|
|
dstpixel[ -3]=((srcpixel[ -3] >> 8) & 0xff0000) | /* l2 */
|
|
((srcpixel[ -2] << 8) & 0x00ff00) | /* g2 */
|
|
((srcpixel[ -2] >> 8) & 0x0000ff); /* h2 */
|
|
}
|
|
}
|
|
}
|
|
for (x=0; x < w2; x++) {
|
|
/* Do 4 pixels at a time: 3 dwords in and 4 dwords out */
|
|
DWORD srcval1,srcval2;
|
|
|
|
srcval1=srcpixel[0];
|
|
dstpixel[0]=((srcval1 >> 16) & 0x0000ff) | /* h1 */
|
|
( srcval1 & 0x00ff00) | /* g1 */
|
|
((srcval1 << 16) & 0xff0000); /* l1 */
|
|
srcval2=srcpixel[1];
|
|
dstpixel[1]=((srcval1 >> 8) & 0xff0000) | /* l2 */
|
|
((srcval2 << 8) & 0x00ff00) | /* g2 */
|
|
((srcval2 >> 8) & 0x0000ff); /* h2 */
|
|
srcval1=srcpixel[2];
|
|
dstpixel[2]=( srcval2 & 0xff0000) | /* l3 */
|
|
((srcval2 >> 16) & 0x00ff00) | /* g3 */
|
|
( srcval1 & 0x0000ff); /* h3 */
|
|
dstpixel[3]=((srcval1 >> 24) & 0x0000ff) | /* h4 */
|
|
((srcval1 >> 8) & 0x00ff00) | /* g4 */
|
|
((srcval1 << 8) & 0xff0000); /* l4 */
|
|
srcpixel+=3;
|
|
dstpixel+=4;
|
|
}
|
|
/* do last w3 pixels */
|
|
x = w3;
|
|
if( x) {
|
|
dstpixel[0]=((srcpixel[0] >> 16) & 0x0000ff) | /* h1 */
|
|
( srcpixel[0] & 0x00ff00) | /* g1 */
|
|
((srcpixel[0] << 16) & 0xff0000); /* l1 */
|
|
if( --x) {
|
|
dstpixel[1]=((srcpixel[0] >> 8) & 0xff0000) | /* l2 */
|
|
((srcpixel[1] << 8) & 0x00ff00) | /* g2 */
|
|
((srcpixel[1] >> 8) & 0x0000ff); /* h2 */
|
|
if( --x) {
|
|
dstpixel[2]=( srcpixel[1] & 0xff0000) | /* l3 */
|
|
((srcpixel[1] >> 16) & 0x00ff00) | /* g3 */
|
|
( srcpixel[2] & 0x0000ff); /* h3 */
|
|
}
|
|
}
|
|
}
|
|
srcbits = (const char*)srcbits + srclinebytes;
|
|
dstbits = (char*)dstbits + dstlinebytes;
|
|
}
|
|
}
|
|
|
|
static void convert_rgb888_to_any0888(int width, int height,
|
|
const void* srcbits, int srclinebytes,
|
|
void* dstbits, int dstlinebytes,
|
|
DWORD rdst, DWORD gdst, DWORD bdst)
|
|
{
|
|
int rLeftShift,gLeftShift,bLeftShift;
|
|
const BYTE* srcpixel;
|
|
DWORD* dstpixel;
|
|
int x,y;
|
|
|
|
rLeftShift=X11DRV_DIB_MaskToShift(rdst);
|
|
gLeftShift=X11DRV_DIB_MaskToShift(gdst);
|
|
bLeftShift=X11DRV_DIB_MaskToShift(bdst);
|
|
for (y=0; y<height; y++) {
|
|
srcpixel=srcbits;
|
|
dstpixel=dstbits;
|
|
for (x=0; x<width; x++) {
|
|
*dstpixel++=(srcpixel[0] << bLeftShift) | /* b */
|
|
(srcpixel[1] << gLeftShift) | /* g */
|
|
(srcpixel[2] << rLeftShift); /* r */
|
|
srcpixel+=3;
|
|
}
|
|
srcbits = (const char*)srcbits + srclinebytes;
|
|
dstbits = (char*)dstbits + dstlinebytes;
|
|
}
|
|
}
|
|
|
|
static void convert_bgr888_to_any0888(int width, int height,
|
|
const void* srcbits, int srclinebytes,
|
|
void* dstbits, int dstlinebytes,
|
|
DWORD rdst, DWORD gdst, DWORD bdst)
|
|
{
|
|
int rLeftShift,gLeftShift,bLeftShift;
|
|
const BYTE* srcpixel;
|
|
DWORD* dstpixel;
|
|
int x,y;
|
|
|
|
rLeftShift=X11DRV_DIB_MaskToShift(rdst);
|
|
gLeftShift=X11DRV_DIB_MaskToShift(gdst);
|
|
bLeftShift=X11DRV_DIB_MaskToShift(bdst);
|
|
for (y=0; y<height; y++) {
|
|
srcpixel=srcbits;
|
|
dstpixel=dstbits;
|
|
for (x=0; x<width; x++) {
|
|
*dstpixel++=(srcpixel[0] << rLeftShift) | /* r */
|
|
(srcpixel[1] << gLeftShift) | /* g */
|
|
(srcpixel[2] << bLeftShift); /* b */
|
|
srcpixel+=3;
|
|
}
|
|
srcbits = (const char*)srcbits + srclinebytes;
|
|
dstbits = (char*)dstbits + dstlinebytes;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 32 bit conversions
|
|
*/
|
|
|
|
static void convert_0888_asis(int width, int height,
|
|
const void* srcbits, int srclinebytes,
|
|
void* dstbits, int dstlinebytes)
|
|
{
|
|
int y;
|
|
|
|
width *= 4;
|
|
|
|
if (srclinebytes == dstlinebytes && srclinebytes == width)
|
|
{
|
|
memcpy(dstbits, srcbits, height * width);
|
|
return;
|
|
}
|
|
|
|
for (y=0; y<height; y++) {
|
|
memcpy(dstbits, srcbits, width);
|
|
srcbits = (const char*)srcbits + srclinebytes;
|
|
dstbits = (char*)dstbits + dstlinebytes;
|
|
}
|
|
}
|
|
|
|
static void convert_0888_reverse(int width, int height,
|
|
const void* srcbits, int srclinebytes,
|
|
void* dstbits, int dstlinebytes)
|
|
{
|
|
const DWORD* srcpixel;
|
|
DWORD* dstpixel;
|
|
int x,y;
|
|
|
|
for (y=0; y<height; y++) {
|
|
srcpixel=srcbits;
|
|
dstpixel=dstbits;
|
|
for (x=0; x<width; x++) {
|
|
DWORD srcval;
|
|
srcval=*srcpixel++;
|
|
*dstpixel++=((srcval << 16) & 0x00ff0000) | /* h */
|
|
( srcval & 0x0000ff00) | /* g */
|
|
((srcval >> 16) & 0x000000ff); /* l */
|
|
}
|
|
srcbits = (const char*)srcbits + srclinebytes;
|
|
dstbits = (char*)dstbits + dstlinebytes;
|
|
}
|
|
}
|
|
|
|
static void convert_0888_any(int width, int height,
|
|
const void* srcbits, int srclinebytes,
|
|
DWORD rsrc, DWORD gsrc, DWORD bsrc,
|
|
void* dstbits, int dstlinebytes,
|
|
DWORD rdst, DWORD gdst, DWORD bdst)
|
|
{
|
|
int rRightShift,gRightShift,bRightShift;
|
|
int rLeftShift,gLeftShift,bLeftShift;
|
|
const DWORD* srcpixel;
|
|
DWORD* dstpixel;
|
|
int x,y;
|
|
|
|
rRightShift=X11DRV_DIB_MaskToShift(rsrc);
|
|
gRightShift=X11DRV_DIB_MaskToShift(gsrc);
|
|
bRightShift=X11DRV_DIB_MaskToShift(bsrc);
|
|
rLeftShift=X11DRV_DIB_MaskToShift(rdst);
|
|
gLeftShift=X11DRV_DIB_MaskToShift(gdst);
|
|
bLeftShift=X11DRV_DIB_MaskToShift(bdst);
|
|
for (y=0; y<height; y++) {
|
|
srcpixel=srcbits;
|
|
dstpixel=dstbits;
|
|
for (x=0; x<width; x++) {
|
|
DWORD srcval;
|
|
srcval=*srcpixel++;
|
|
*dstpixel++=(((srcval >> rRightShift) & 0xff) << rLeftShift) |
|
|
(((srcval >> gRightShift) & 0xff) << gLeftShift) |
|
|
(((srcval >> bRightShift) & 0xff) << bLeftShift);
|
|
}
|
|
srcbits = (const char*)srcbits + srclinebytes;
|
|
dstbits = (char*)dstbits + dstlinebytes;
|
|
}
|
|
}
|
|
|
|
static void convert_0888_to_555_asis(int width, int height,
|
|
const void* srcbits, int srclinebytes,
|
|
void* dstbits, int dstlinebytes)
|
|
{
|
|
const DWORD* srcpixel;
|
|
WORD* dstpixel;
|
|
int x,y;
|
|
|
|
for (y=0; y<height; y++) {
|
|
srcpixel=srcbits;
|
|
dstpixel=dstbits;
|
|
for (x=0; x<width; x++) {
|
|
DWORD srcval;
|
|
srcval=*srcpixel++;
|
|
*dstpixel++=((srcval >> 9) & 0x7c00) | /* h */
|
|
((srcval >> 6) & 0x03e0) | /* g */
|
|
((srcval >> 3) & 0x001f); /* l */
|
|
}
|
|
srcbits = (const char*)srcbits + srclinebytes;
|
|
dstbits = (char*)dstbits + dstlinebytes;
|
|
}
|
|
}
|
|
|
|
static void convert_0888_to_555_reverse(int width, int height,
|
|
const void* srcbits, int srclinebytes,
|
|
void* dstbits, int dstlinebytes)
|
|
{
|
|
const DWORD* srcpixel;
|
|
WORD* dstpixel;
|
|
int x,y;
|
|
|
|
for (y=0; y<height; y++) {
|
|
srcpixel=srcbits;
|
|
dstpixel=dstbits;
|
|
for (x=0; x<width; x++) {
|
|
DWORD srcval;
|
|
srcval=*srcpixel++;
|
|
*dstpixel++=((srcval >> 19) & 0x001f) | /* h */
|
|
((srcval >> 6) & 0x03e0) | /* g */
|
|
((srcval << 7) & 0x7c00); /* l */
|
|
}
|
|
srcbits = (const char*)srcbits + srclinebytes;
|
|
dstbits = (char*)dstbits + dstlinebytes;
|
|
}
|
|
}
|
|
|
|
static void convert_0888_to_565_asis(int width, int height,
|
|
const void* srcbits, int srclinebytes,
|
|
void* dstbits, int dstlinebytes)
|
|
{
|
|
const DWORD* srcpixel;
|
|
WORD* dstpixel;
|
|
int x,y;
|
|
|
|
for (y=0; y<height; y++) {
|
|
srcpixel=srcbits;
|
|
dstpixel=dstbits;
|
|
for (x=0; x<width; x++) {
|
|
DWORD srcval;
|
|
srcval=*srcpixel++;
|
|
*dstpixel++=((srcval >> 8) & 0xf800) | /* h */
|
|
((srcval >> 5) & 0x07e0) | /* g */
|
|
((srcval >> 3) & 0x001f); /* l */
|
|
}
|
|
srcbits = (const char*)srcbits + srclinebytes;
|
|
dstbits = (char*)dstbits + dstlinebytes;
|
|
}
|
|
}
|
|
|
|
static void convert_0888_to_565_reverse(int width, int height,
|
|
const void* srcbits, int srclinebytes,
|
|
void* dstbits, int dstlinebytes)
|
|
{
|
|
const DWORD* srcpixel;
|
|
WORD* dstpixel;
|
|
int x,y;
|
|
|
|
for (y=0; y<height; y++) {
|
|
srcpixel=srcbits;
|
|
dstpixel=dstbits;
|
|
for (x=0; x<width; x++) {
|
|
DWORD srcval;
|
|
srcval=*srcpixel++;
|
|
*dstpixel++=((srcval >> 19) & 0x001f) | /* h */
|
|
((srcval >> 5) & 0x07e0) | /* g */
|
|
((srcval << 8) & 0xf800); /* l */
|
|
}
|
|
srcbits = (const char*)srcbits + srclinebytes;
|
|
dstbits = (char*)dstbits + dstlinebytes;
|
|
}
|
|
}
|
|
|
|
static void convert_any0888_to_5x5(int width, int height,
|
|
const void* srcbits, int srclinebytes,
|
|
DWORD rsrc, DWORD gsrc, DWORD bsrc,
|
|
void* dstbits, int dstlinebytes,
|
|
WORD rdst, WORD gdst, WORD bdst)
|
|
{
|
|
int rRightShift,gRightShift,bRightShift;
|
|
int rLeftShift,gLeftShift,bLeftShift;
|
|
const DWORD* srcpixel;
|
|
WORD* dstpixel;
|
|
int x,y;
|
|
|
|
/* Here is how we proceed. Assume we have rsrc=0x0000ff00 and our pixel
|
|
* contains 0x11223344.
|
|
* - first we shift 0x11223344 right by rRightShift to bring the most
|
|
* significant bits of the red components in the bottom 5 (or 6) bits
|
|
* -> 0x4488c
|
|
* - then we remove non red bits by anding with the modified rdst (0x1f)
|
|
* -> 0x0c
|
|
* - finally shift these bits left by rLeftShift so that they end up in
|
|
* the right place
|
|
* -> 0x3000
|
|
*/
|
|
rRightShift=X11DRV_DIB_MaskToShift(rsrc)+3;
|
|
gRightShift=X11DRV_DIB_MaskToShift(gsrc);
|
|
gRightShift+=(gdst==0x07e0?2:3);
|
|
bRightShift=X11DRV_DIB_MaskToShift(bsrc)+3;
|
|
|
|
rLeftShift=X11DRV_DIB_MaskToShift(rdst);
|
|
rdst=rdst >> rLeftShift;
|
|
gLeftShift=X11DRV_DIB_MaskToShift(gdst);
|
|
gdst=gdst >> gLeftShift;
|
|
bLeftShift=X11DRV_DIB_MaskToShift(bdst);
|
|
bdst=bdst >> bLeftShift;
|
|
|
|
for (y=0; y<height; y++) {
|
|
srcpixel=srcbits;
|
|
dstpixel=dstbits;
|
|
for (x=0; x<width; x++) {
|
|
DWORD srcval;
|
|
srcval=*srcpixel++;
|
|
*dstpixel++=(((srcval >> rRightShift) & rdst) << rLeftShift) |
|
|
(((srcval >> gRightShift) & gdst) << gLeftShift) |
|
|
(((srcval >> bRightShift) & bdst) << bLeftShift);
|
|
}
|
|
srcbits = (const char*)srcbits + srclinebytes;
|
|
dstbits = (char*)dstbits + dstlinebytes;
|
|
}
|
|
}
|
|
|
|
static void convert_0888_to_888_asis(int width, int height,
|
|
const void* srcbits, int srclinebytes,
|
|
void* dstbits, int dstlinebytes)
|
|
{
|
|
const DWORD* srcpixel;
|
|
DWORD* dstpixel;
|
|
BYTE* dstbyte;
|
|
int x,y;
|
|
int oddwidth;
|
|
|
|
oddwidth=width & 3;
|
|
width=width/4;
|
|
for (y=0; y<height; y++) {
|
|
srcpixel=srcbits;
|
|
dstpixel=dstbits;
|
|
for (x=0; x<width; x++) {
|
|
/* Do 4 pixels at a time: 4 dwords in and 3 dwords out */
|
|
DWORD srcval;
|
|
srcval=((*srcpixel++) & 0x00ffffff); /* h1, g1, l1*/
|
|
*dstpixel++=srcval | ((*srcpixel) << 24); /* h2 */
|
|
srcval=((*srcpixel++ >> 8 ) & 0x0000ffff); /* g2, l2 */
|
|
*dstpixel++=srcval | ((*srcpixel) << 16); /* h3, g3 */
|
|
srcval=((*srcpixel++ >> 16) & 0x000000ff); /* l3 */
|
|
*dstpixel++=srcval | ((*srcpixel++) << 8); /* h4, g4, l4 */
|
|
}
|
|
/* And now up to 3 odd pixels */
|
|
dstbyte=(BYTE*)dstpixel;
|
|
for (x=0; x<oddwidth; x++) {
|
|
DWORD srcval;
|
|
srcval=*srcpixel++;
|
|
*((WORD*)dstbyte) = srcval; /* h, g */
|
|
dstbyte+=sizeof(WORD);
|
|
*dstbyte++=srcval >> 16; /* l */
|
|
}
|
|
srcbits = (const char*)srcbits + srclinebytes;
|
|
dstbits = (char*)dstbits + dstlinebytes;
|
|
}
|
|
}
|
|
|
|
static void convert_0888_to_888_reverse(int width, int height,
|
|
const void* srcbits, int srclinebytes,
|
|
void* dstbits, int dstlinebytes)
|
|
{
|
|
const DWORD* srcpixel;
|
|
DWORD* dstpixel;
|
|
BYTE* dstbyte;
|
|
int x,y;
|
|
int oddwidth;
|
|
|
|
oddwidth=width & 3;
|
|
width=width/4;
|
|
for (y=0; y<height; y++) {
|
|
srcpixel=srcbits;
|
|
dstpixel=dstbits;
|
|
for (x=0; x<width; x++) {
|
|
/* Do 4 pixels at a time: 4 dwords in and 3 dwords out */
|
|
DWORD srcval1,srcval2;
|
|
srcval1=*srcpixel++;
|
|
srcval2= ((srcval1 >> 16) & 0x000000ff) | /* h1 */
|
|
( srcval1 & 0x0000ff00) | /* g1 */
|
|
((srcval1 << 16) & 0x00ff0000); /* l1 */
|
|
srcval1=*srcpixel++;
|
|
*dstpixel++=srcval2 |
|
|
((srcval1 << 8) & 0xff000000); /* h2 */
|
|
srcval2= ((srcval1 >> 8) & 0x000000ff) | /* g2 */
|
|
((srcval1 << 8) & 0x0000ff00); /* l2 */
|
|
srcval1=*srcpixel++;
|
|
*dstpixel++=srcval2 |
|
|
( srcval1 & 0x00ff0000) | /* h3 */
|
|
((srcval1 << 16) & 0xff000000); /* g3 */
|
|
srcval2= ( srcval1 & 0x000000ff); /* l3 */
|
|
srcval1=*srcpixel++;
|
|
*dstpixel++=srcval2 |
|
|
((srcval1 >> 8) & 0x0000ff00) | /* h4 */
|
|
((srcval1 << 8) & 0x00ff0000) | /* g4 */
|
|
( srcval1 << 24); /* l4 */
|
|
}
|
|
/* And now up to 3 odd pixels */
|
|
dstbyte=(BYTE*)dstpixel;
|
|
for (x=0; x<oddwidth; x++) {
|
|
DWORD srcval;
|
|
srcval=*srcpixel++;
|
|
*((WORD*)dstbyte)=((srcval >> 16) & 0x00ff) | /* h */
|
|
(srcval & 0xff00); /* g */
|
|
dstbyte += sizeof(WORD);
|
|
*dstbyte++=srcval; /* l */
|
|
}
|
|
srcbits = (const char*)srcbits + srclinebytes;
|
|
dstbits = (char*)dstbits + dstlinebytes;
|
|
}
|
|
}
|
|
|
|
static void convert_any0888_to_rgb888(int width, int height,
|
|
const void* srcbits, int srclinebytes,
|
|
DWORD rsrc, DWORD gsrc, DWORD bsrc,
|
|
void* dstbits, int dstlinebytes)
|
|
{
|
|
int rRightShift,gRightShift,bRightShift;
|
|
const DWORD* srcpixel;
|
|
BYTE* dstpixel;
|
|
int x,y;
|
|
|
|
rRightShift=X11DRV_DIB_MaskToShift(rsrc);
|
|
gRightShift=X11DRV_DIB_MaskToShift(gsrc);
|
|
bRightShift=X11DRV_DIB_MaskToShift(bsrc);
|
|
for (y=0; y<height; y++) {
|
|
srcpixel=srcbits;
|
|
dstpixel=dstbits;
|
|
for (x=0; x<width; x++) {
|
|
DWORD srcval;
|
|
srcval=*srcpixel++;
|
|
dstpixel[0]=(srcval >> bRightShift); /* b */
|
|
dstpixel[1]=(srcval >> gRightShift); /* g */
|
|
dstpixel[2]=(srcval >> rRightShift); /* r */
|
|
dstpixel+=3;
|
|
}
|
|
srcbits = (const char*)srcbits + srclinebytes;
|
|
dstbits = (char*)dstbits + dstlinebytes;
|
|
}
|
|
}
|
|
|
|
static void convert_any0888_to_bgr888(int width, int height,
|
|
const void* srcbits, int srclinebytes,
|
|
DWORD rsrc, DWORD gsrc, DWORD bsrc,
|
|
void* dstbits, int dstlinebytes)
|
|
{
|
|
int rRightShift,gRightShift,bRightShift;
|
|
const DWORD* srcpixel;
|
|
BYTE* dstpixel;
|
|
int x,y;
|
|
|
|
rRightShift=X11DRV_DIB_MaskToShift(rsrc);
|
|
gRightShift=X11DRV_DIB_MaskToShift(gsrc);
|
|
bRightShift=X11DRV_DIB_MaskToShift(bsrc);
|
|
for (y=0; y<height; y++) {
|
|
srcpixel=srcbits;
|
|
dstpixel=dstbits;
|
|
for (x=0; x<width; x++) {
|
|
DWORD srcval;
|
|
srcval=*srcpixel++;
|
|
dstpixel[0]=(srcval >> rRightShift); /* r */
|
|
dstpixel[1]=(srcval >> gRightShift); /* g */
|
|
dstpixel[2]=(srcval >> bRightShift); /* b */
|
|
dstpixel+=3;
|
|
}
|
|
srcbits = (const char*)srcbits + srclinebytes;
|
|
dstbits = (char*)dstbits + dstlinebytes;
|
|
}
|
|
}
|
|
|
|
const dib_conversions dib_normal = {
|
|
convert_5x5_asis,
|
|
convert_555_reverse,
|
|
convert_555_to_565_asis,
|
|
convert_555_to_565_reverse,
|
|
convert_555_to_888_asis,
|
|
convert_555_to_888_reverse,
|
|
convert_555_to_0888_asis,
|
|
convert_555_to_0888_reverse,
|
|
convert_5x5_to_any0888,
|
|
convert_565_reverse,
|
|
convert_565_to_555_asis,
|
|
convert_565_to_555_reverse,
|
|
convert_565_to_888_asis,
|
|
convert_565_to_888_reverse,
|
|
convert_565_to_0888_asis,
|
|
convert_565_to_0888_reverse,
|
|
convert_888_asis,
|
|
convert_888_reverse,
|
|
convert_888_to_555_asis,
|
|
convert_888_to_555_reverse,
|
|
convert_888_to_565_asis,
|
|
convert_888_to_565_reverse,
|
|
convert_888_to_0888_asis,
|
|
convert_888_to_0888_reverse,
|
|
convert_rgb888_to_any0888,
|
|
convert_bgr888_to_any0888,
|
|
convert_0888_asis,
|
|
convert_0888_reverse,
|
|
convert_0888_any,
|
|
convert_0888_to_555_asis,
|
|
convert_0888_to_555_reverse,
|
|
convert_0888_to_565_asis,
|
|
convert_0888_to_565_reverse,
|
|
convert_any0888_to_5x5,
|
|
convert_0888_to_888_asis,
|
|
convert_0888_to_888_reverse,
|
|
convert_any0888_to_rgb888,
|
|
convert_any0888_to_bgr888
|
|
};
|