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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Pacbox - a Pacman Emulator for Rockbox
*
* Based on PIE - Pacman Instructional Emulator
*
* Copyright (c) 1997-2003,2004 Alessandro Scotti
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "pacbox.h"
#include "pacbox_lcd.h"
#include "arcade.h"
#include "hardware.h"
void blit_display(fb_data* lcd_framebuffer, unsigned char* vbuf)
{
fb_data* dst;
fb_data* next_dst;
int x,y;
#ifdef HAVE_LCD_COLOR
#if (LCD_WIDTH >= 224) && (LCD_HEIGHT >= 288)
/* Native resolution = 224x288 */
(void)next_dst;
dst=&lcd_framebuffer[YOFS*LCD_WIDTH+XOFS];
for (y=0;y<ScreenHeight;y++) {
for (x=0;x<ScreenWidth;x++) {
*(dst++) = palette[*(vbuf++)];
}
dst += XOFS*2;
}
#elif (LCD_WIDTH >= 288) && (LCD_HEIGHT >= 224)
/* Native resolution - rotated 90 degrees = 288x224 */
next_dst=&lcd_framebuffer[YOFS*LCD_WIDTH+XOFS+ScreenHeight-1];
for( y=ScreenHeight-1; y>=0; y-- ) {
dst = (next_dst--);
for( x=0; x<ScreenWidth; x++ ) {
*dst = palette[*(vbuf++)];
dst+=LCD_WIDTH;
}
}
#elif (LCD_WIDTH >= 216) && (LCD_HEIGHT >= 168)
/* 0.75 scaling - display 3 out of 4 pixels = 216x168
Skipping pixel #2 out of 4 seems to give the most legible display
*/
next_dst=&lcd_framebuffer[YOFS*LCD_WIDTH+XOFS+((ScreenHeight*3)/4)-1];
for (y=ScreenHeight-1;y >= 0; y--) {
if ((y & 3) != 1) {
dst = (next_dst--);
for (x=0;x<ScreenWidth;x++) {
if ((x & 3) == 1) { vbuf++; }
else {
*dst = palette[*(vbuf++)];
dst+=LCD_WIDTH;
}
}
} else {
vbuf+=ScreenWidth;
}
}
#elif (LCD_WIDTH >= 144) && (LCD_HEIGHT >= 112)
/* 0.5 scaling - display every other pixel = 144x112 */
next_dst=&lcd_framebuffer[YOFS*LCD_WIDTH+XOFS+ScreenHeight/2-1];
for (y=(ScreenHeight/2)-1;y >= 0; y--) {
dst = (next_dst--);
for (x=0;x<ScreenWidth/2;x++) {
*dst = palette[*(vbuf)];
vbuf+=2;
dst+=LCD_WIDTH;
}
vbuf+=ScreenWidth;
}
#endif
#else /* Greyscale LCDs */
#if (LCD_WIDTH >= 144) && (LCD_HEIGHT >= 112)
#if LCD_PIXELFORMAT == VERTICAL_PACKING
/* 0.5 scaling - display every other pixel = 144x112 */
next_dst=&lcd_framebuffer[YOFS/4*LCD_WIDTH+XOFS+ScreenHeight/2-1];
for (y=(ScreenHeight/2)-1;y >= 0; y--) {
dst = (next_dst--);
for (x=0;x<ScreenWidth/8;x++) {
*dst = (palette[*(vbuf+6)]<<6) | (palette[*(vbuf+4)] << 4) | (palette[*(vbuf+2)] << 2) | palette[*(vbuf)];
vbuf+=8;
dst+=LCD_WIDTH;
}
vbuf+=ScreenWidth;
}
#endif /* Vertical Packing */
#endif /* Size >= 144x112 */
#endif /* Not Colour */
}
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