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#include "zxvid_com.h"
#ifndef USE_GREY
/* screen routines for greyscale targets not using greyscale lib */
#if LCD_PIXELFORMAT == HORIZONTAL_PACKING
#define FB_WIDTH ((LCD_WIDTH+3)/4)
fb_data pixmask[4] ICONST_ATTR = {
0xC0, 0x30, 0x0C, 0x03
};
#elif LCD_PIXELFORMAT == VERTICAL_PACKING
fb_data pixmask[4] ICONST_ATTR = {
0x03, 0x0C, 0x30, 0xC0
};
#elif LCD_PIXELFORMAT == VERTICAL_INTERLEAVED
fb_data pixmask[8] ICONST_ATTR = {
0x0101, 0x0202, 0x0404, 0x0808, 0x1010, 0x2020, 0x4040, 0x8080
};
fb_data pixval[4] ICONST_ATTR = {
0x0000, 0x0001, 0x0100, 0x0101
};
#endif
static const unsigned char graylevels[16] = {
0, 1, 1, 1, 2, 2, 3, 3,
0, 1, 1, 1, 2, 2, 3, 3
};
void init_spect_scr(void)
{
int i;
unsigned mask = settings.invert_colors ? 0 : 3;
for(i = 0; i < 16; i++)
sp_colors[i] = graylevels[i] ^ mask;
sp_image = (char *) &image_array;
spscr_init_mask_color();
spscr_init_line_pointers(HEIGHT);
}
void update_screen(void)
{
fb_data *frameb;
int y=0;
int x=0;
unsigned char* image;
int srcx, srcy=0; /* x / y coordinates in source image */
image = sp_image + ( (Y_OFF)*(WIDTH) ) + X_OFF;
unsigned mask;
#if LCD_PIXELFORMAT == HORIZONTAL_PACKING
for(y = 0; y < LCD_HEIGHT; y++)
{
frameb = rb->lcd_framebuffer + (y) * FB_WIDTH;
srcx = 0; /* reset our x counter before each row... */
for(x = 0; x < LCD_WIDTH; x++)
{
mask = ~pixmask[x & 3];
frameb[x >> 2] = (frameb[x >> 2] & mask) | ((image[(srcx>>16)]&0x3) << ((3-(x & 3 )) * 2 ));
srcx += X_STEP; /* move through source image */
}
srcy += Y_STEP; /* move through the source image... */
image += (srcy>>16)*WIDTH; /* and possibly to the next row. */
srcy &= 0xffff; /* set up the y-coordinate between 0 and 1 */
}
#elif LCD_PIXELFORMAT == VERTICAL_PACKING
int shift;
for(y = 0; y < LCD_HEIGHT; y++)
{
frameb = rb->lcd_framebuffer + (y/4) * LCD_WIDTH;
srcx = 0; /* reset our x counter before each row... */
shift = ((y & 3 ) * 2 );
mask = ~pixmask[y & 3];
for(x = 0; x < LCD_WIDTH; x++)
{
frameb[x] = (frameb[x] & mask) | ((image[(srcx>>16)]&0x3) << shift );
srcx += X_STEP; /* move through source image */
}
srcy += Y_STEP; /* move through the source image... */
image += (srcy>>16)*WIDTH; /* and possibly to the next row. */
srcy &= 0xffff; /* set up the y-coordinate between 0 and 1 */
}
#elif LCD_PIXELFORMAT == VERTICAL_INTERLEAVED
int shift;
for(y = 0; y < LCD_HEIGHT; y++)
{
frameb = rb->lcd_framebuffer + (y/8) * LCD_WIDTH;
srcx = 0; /* reset our x counter before each row... */
shift = (y & 7);
mask = ~pixmask[y & 7];
for(x = 0; x < LCD_WIDTH; x++)
{
frameb[x] = (frameb[x] & mask) | (pixval[image[(srcx>>16)]&0x3] << shift );
srcx += X_STEP; /* move through source image */
}
srcy += Y_STEP; /* move through the source image... */
image += (srcy>>16)*WIDTH; /* and possibly to the next row. */
srcy &= 0xffff; /* set up the y-coordinate between 0 and 1 */
}
#endif
if ( settings.showfps ) {
int percent=0;
int TPF = HZ/50;/* ticks per frame */
if ((*rb->current_tick-start_time) > TPF )
percent = 100*video_frames/((*rb->current_tick-start_time)/TPF);
rb->lcd_putsxyf(0,0,"%d %%",percent);
}
rb -> lcd_update();
}
#endif /* !USE_GREY */
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