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// vi:ts=4:shiftwidth=4:expandtab
/***************************************************************************
fblinear8.cpp - description
-------------------
begin : Fri July 20 2001
copyright : (C) 2001 by ejoy, huyong
email : ejoy@users.sourceforge.net
ccpaging@online.sh.cn
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include <assert.h>
#include <string.h>
#include "fblinear8.h"
//gray scale
__u32 FBLinear8::nibbletab_cfb8[] = {
0x00000000,0xff000000,0x00ff0000,0xffff0000,
0x0000ff00,0xff00ff00,0x00ffff00,0xffffff00,
0x000000ff,0xff0000ff,0x00ff00ff,0xffff00ff,
0x0000ffff,0xff00ffff,0x00ffffff,0xffffffff
};
FBLinear8::FBLinear8() {
mNextLine = mNextLine ? mNextLine : mXres;
}
void FBLinear8::FillRect(int x1,int y1,int x2,int y2,int color) {
assert( x1 >= 0 && x1 < mXres && y1 >=0 && y1 < mYres);
assert( x2 >= 0 && x2 < mXres && y2 >=0 && y2 < mYres);
assert(x1 <= x2 && y1 <= y2);
for(int y = y1;y <= y2; y++)
memset(mpBuf + mNextLine * y + x1,color,x2 - x1 + 1);
}
void FBLinear8::RevRect(int x1,int y1,int x2,int y2) {
assert( x1 >= 0 && x1 < Width() && y1 >=0 && y1 < Height());
assert( x2 >= 0 && x2 < Width() && y2 >=0 && y2 < Height());
assert(x1 <= x2 && y1 <= y2);
__u8* dest = (__u8*)mpBuf + mNextLine * y1 + x1;
int height = y2 - y1 + 1;
int width = x2 - x1 + 1;
int cnt;
__u8* dest8;
__u16* dest16;
__u32 *dest32;
for(; height--; dest += mNextLine) {
dest32 = (__u32*)dest;
for (cnt = width/4; cnt--;) {
fb_writel(fb_readl(dest32) ^ 0x0f0f0f0f, dest32++);
}
if (width & 2) {
dest16 = (__u16*)dest32;
fb_writew(fb_readw(dest16) ^ 0x0f0f, dest16++);
dest32 = (__u32*)dest16;
}
if (width & 1) {
dest8 = (__u8*)dest32;
fb_writeb(fb_readb(dest8) ^ 0x0f, dest8);
}
}
}
void FBLinear8::SaveRect(int x1,int y1,int x2,int y2, char* *buffer) {
assert( x1 >= 0 && x1 < Width() && y1 >=0 && y1 < Height());
assert( x2 >= 0 && x2 < Width() && y2 >=0 && y2 < Height());
assert(x1 <= x2 && y1 <= y2);
__u8* dest = (__u8*)mpBuf + mNextLine * y1 + x1 * 1;
__u8* buf= (__u8*)(*buffer);
int height = y2 - y1 + 1;
int width = x2 - x1 + 1;
int buffer_bytes = height * width * 1;
// allocate memory for saving
if( *buffer != NULL )
{
delete [] (*buffer);
*buffer = NULL;
}
*buffer = (char*) new char[buffer_bytes];
__u8* dest8;
__u8* buf8;
int cnt;
for(; height--; dest += mNextLine) {
dest8 = (__u8*)dest;
buf8 = (__u8*)buf;
for (cnt = width * 1; cnt--;) {
*buf8 = fb_readb(dest8);
dest8++;
buf8++;
}
buf += mNextLine;
}
}
void FBLinear8::RstrRect(int x1,int y1,int x2,int y2, char* *buffer) {
assert( x1 >= 0 && x1 < Width() && y1 >=0 && y1 < Height());
assert( x2 >= 0 && x2 < Width() && y2 >=0 && y2 < Height());
assert(x1 <= x2 && y1 <= y2);
__u8* dest = (__u8*)mpBuf + mNextLine * y1 + x1 * 1;
__u8* buf= (__u8*)(*buffer);
assert ( *buffer != NULL );
__u8* dest8;
__u8* buf8;
int cnt;
int height = y2 - y1 + 1;
int width = x2 - x1 + 1;
for(; height--; dest += mNextLine) {
dest8 = (__u8*)dest;
buf8 = (__u8*)buf;
for (cnt = width * 1; cnt--;) {
fb_writeb( *buf8, dest8 );
dest8++;
buf8++;
}
buf += mNextLine;
}
// release memory
delete [] (*buffer);
*buffer = NULL;
}
void FBLinear8::PutPixel(int x,int y,int color) {
*(mpBuf + mNextLine * y + x) = color;
}
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