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#include <stdio.h>
#include <string.h>
#include "mydebug.h"
#include "imagedump.h"
#if IMAGE_FORMAT == IMAGE_GIF
#include "gifencode.cpp"
/* Default to no transparency */
static int transparent = -1;
void SetTransparency(int which)
{
transparent = which;
}
/* The global 8-bit image dump function */
void ImageDump(FILE *dumpfp, int width, int height, int ncolors,
unsigned long *new_colors, unsigned char *data)
{
int bpp, i;
int *Red, *Green, *Blue;
/* Find out how many bits of color required to represent our colors */
for ( bpp=1, i=2; i < ncolors; ++bpp )
i *= 2;
#ifdef DEBUG
error("Dump: width = %d, height = %d, ncolors = %d, bpp = %d\n",
width, height, ncolors, bpp);
#endif
/* Allocate and fill the colors */
Red = new int[i]; memset(Red, 0, i);
Green = new int[i]; memset(Green, 0, i);
Blue = new int[i]; memset(Blue, 0, i);
for ( i=0; i<ncolors; ++i ) {
Red[i] = (new_colors[i]>>16)&0xFF;
Green[i] = (new_colors[i]>>8)&0xFF;
Blue[i] = (new_colors[i]&0xFF);
}
if ( transparent >= 0 ) {
for ( i=0; i<ncolors; ++i ) {
if ( transparent == new_colors[i] ) {
transparent = i;
break;
}
}
if ( i == ncolors ) {
error(
"Warning: transparent color 0x%.6x not found\n", transparent);
transparent = -1;
}
}
GIFEncode(dumpfp, width, height, 1, 0, transparent, bpp,
Red, Green, Blue, data);
delete[] Red;
delete[] Green;
delete[] Blue;
}
/* The global > 8-bit image dump function */
void ImageDump(FILE *dumpfp, int width, int height, int bpp,
unsigned char *data)
{
int i, c;
int ri, gi, bi; /* Color shades we want */
int rd, gd, bd; /* Color shades we have */
long mdist, close, d; /* Distance and closest pixel */
int *Red, *Green, *Blue;
unsigned char *newpixels;
/* Allocate a new colormap 4x8x4 */
const int ncolors = 4*8*4;
Red = new int[ncolors];
Green = new int[ncolors];
Blue = new int[ncolors];
i = 0;
memset(Red, 0, ncolors*sizeof(int));
memset(Green, 0, ncolors*sizeof(int));
memset(Blue, 0, ncolors*sizeof(int));
for ( int r = 0; r < 4; ++r ) {
for ( int g = 0; g < 8; ++g ) {
for ( int b = 0; b < 4; ++b ) {
Red[i] = ((r*255)/3);
Green[i] = ((g*255)/7);
Blue[i] = ((b*255)/3);
++i;
#ifdef DEBUG
printf("Created colortable entry #%d: (%d,%d,%d)\n",
i-1, Red[i-1], Green[i-1], Blue[i-1]);
#endif
}
}
}
/* Map the data into the new colormap */
newpixels = new unsigned char[width*height];
for ( i = 0; i < (width*height); ++i, data += bpp ) {
mdist = 100000; close=0;
switch (bpp) {
/* Assuming 5-6-5 pixel format */
case 2: {
unsigned long newpixel;
memcpy(&newpixel, data, bpp);
ri = ((newpixel>>11)&0x1F);
gi = ((newpixel>>5)&0x2F);
bi = ((newpixel)&0x1F);
}
break;
case 3:
case 4: {
unsigned long newpixel;
memcpy(&newpixel, data, bpp);
ri = ((newpixel>>16)&0xFF);
gi = (newpixel>>8&0xFF);
bi = (newpixel&0xFF);
}
break;
default:
/* Huh? */
ri = 0;
gi = 0;
bi = 0;
break;
}
/* Cycle through the colors we have */
for ( c = 0; c<ncolors; ++c ) {
rd = ri - Red[c];
gd = gi - Green[c];
bd = bi - Blue[c];
d = rd*rd + gd*gd + bd*bd;
if ( d < mdist ) {
mdist = d;
close = c;
}
}
#ifdef DEBUG
error("Desired RGB (%d,%d,%d) mapped to existing RGB (%d,%d,%d)\n",
ri, gi, bi, Red[close], Green[close], Blue[close]);
#endif
newpixels[i] = close;
}
/* No transparency .. */
GIFEncode(dumpfp, width, height, 1, 0, -1, 2+3+2,
Red, Green, Blue, newpixels);
delete[] Red;
delete[] Green;
delete[] Blue;
delete[] newpixels;
}
#endif /* IMAGE_FORMAT is GIF */
#if IMAGE_FORMAT == IMAGE_XPM
static char *xpmchars =
".#abcdefghijklmnopqrstuvwxyzABCDEFGHIKLMNOPQRSTUVWXYZ0123456789";
const int nxpmchars = 64;
/* The global image dump function */
void ImageDump(FILE *dumpfp, int width, int height, int ncolors,
unsigned long *new_colors, unsigned char *data)
{
int i, x, len = (width*height);
/* Output the XPM. :-) */
fprintf(dumpfp, "/* XPM */\n");
fprintf(dumpfp, "static char *image[] = {\n");
fprintf(dumpfp, "/* width height num_colors chars_per_pixel */\n");
fprintf(dumpfp, "\" %d %d %d %d\",\n",
width, height, ncolors, (ncolors/nxpmchars)+1);
fprintf(dumpfp, "/* colors */\n");
if ( ncolors > nxpmchars ) {
for ( i=0; i<ncolors; ++i ) {
fprintf(dumpfp, "\"%c%c c #%6.6x\",\n",
xpmchars[i/nxpmchars], xpmchars[i%nxpmchars],
new_colors[i]);
}
} else {
for ( i=0; i<ncolors; ++i ) {
fprintf(dumpfp, "\"%c c #%6.6x\",\n",
xpmchars[i%nxpmchars], new_colors[i]);
}
}
fprintf(dumpfp, "/* pixels */\n");
if ( ncolors > nxpmchars ) {
for ( i=0, x=0; i<len; ++i ) {
if ( x == 0 )
fprintf(dumpfp, "\"");
fprintf(dumpfp, "%c%c", xpmchars[data[i]/nxpmchars],
xpmchars[data[i]%nxpmchars]);
if ( ++x == width ) {
fprintf(dumpfp, "\",\n");
x = 0;
}
}
} else {
for ( i=0, x=0; i<len; ++i ) {
if ( x == 0 )
fprintf(dumpfp, "\"");
fprintf(dumpfp, "%c", xpmchars[data[i]%nxpmchars]);
if ( ++x == width ) {
fprintf(dumpfp, "\",\n");
x = 0;
}
}
}
fprintf(dumpfp, "};\n/* A Maelstrom ScreenShot */\n");
}
#endif /* IMAGE_FORMAT is XPM */
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