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/* this produces a raw ppm file, with a 15-character header of
* "P6 3-digit-width 3-digit-height 255\n"
*/
#include "config.h"
#include "tile.h"
#ifndef MONITOR_HEAP
extern long *FDECL(alloc, (unsigned int));
#endif
FILE *ppm_file;
struct ppmscreen {
int Width;
int Height;
} PpmScreen;
static int tiles_across, tiles_down, curr_tiles_across;
static pixel **image;
static void NDECL(write_header);
static void NDECL(WriteTileStrip);
static void
write_header()
{
(void) fprintf(ppm_file, "P6 %03d %03d 255\n",
PpmScreen.Width, PpmScreen.Height);
}
static void
WriteTileStrip()
{
int i, j;
for (j = 0; j < TILE_Y; j++) {
for (i = 0; i < PpmScreen.Width; i++) {
(void) fputc((char)image[j][i].r, ppm_file);
(void) fputc((char)image[j][i].g, ppm_file);
(void) fputc((char)image[j][i].b, ppm_file);
}
}
}
boolean
fopen_ppm_file(filename, type)
const char *filename;
const char *type;
{
int i;
if (strcmp(type, WRBMODE)) {
Fprintf(stderr, "using writing routine for non-writing?\n");
return FALSE;
}
ppm_file = fopen(filename, type);
if (ppm_file == (FILE *)0) {
Fprintf(stderr, "cannot open ppm file %s\n", filename);
return FALSE;
}
if (!colorsinmainmap) {
Fprintf(stderr, "no colormap set yet\n");
return FALSE;
}
tiles_across = 20;
curr_tiles_across = 0;
PpmScreen.Width = 20 * TILE_X;
tiles_down = 0;
PpmScreen.Height = 0; /* will be rewritten later */
write_header();
image = (pixel **)alloc(TILE_Y * sizeof(pixel *));
for (i = 0; i < TILE_Y; i++) {
image[i] = (pixel *) alloc(PpmScreen.Width * sizeof(pixel));
}
return TRUE;
}
boolean
write_ppm_tile(pixels)
pixel (*pixels)[TILE_X];
{
int i, j;
for (j = 0; j < TILE_Y; j++) {
for (i = 0; i < TILE_X; i++) {
image[j][curr_tiles_across*TILE_X + i] = pixels[j][i];
}
}
curr_tiles_across++;
if (curr_tiles_across == tiles_across) {
WriteTileStrip();
curr_tiles_across = 0;
tiles_down++;
}
return TRUE;
}
int
fclose_ppm_file()
{
int i, j;
if (curr_tiles_across) { /* partial row */
/* fill with checkerboard, for lack of a better idea */
for (j = 0; j < TILE_Y; j++) {
for (i = curr_tiles_across * TILE_X;
i < PpmScreen.Width; i += 2 ) {
image[j][i].r = MainColorMap[CM_RED][0];
image[j][i].g = MainColorMap[CM_GREEN][0];
image[j][i].b = MainColorMap[CM_BLUE][0];
image[j][i+1].r = MainColorMap[CM_RED][1];
image[j][i+1].g = MainColorMap[CM_GREEN][1];
image[j][i+1].b = MainColorMap[CM_BLUE][1];
}
}
WriteTileStrip();
curr_tiles_across = 0;
tiles_down++;
}
for (i = 0; i < TILE_Y; i++) {
free((genericptr_t)image[i]);
}
free((genericptr_t)image);
PpmScreen.Height = tiles_down * TILE_Y;
rewind(ppm_file);
write_header(); /* update size */
return(fclose(ppm_file));
}
int
main(argc, argv)
int argc;
char *argv[];
{
pixel pixels[TILE_Y][TILE_X];
if (argc != 3) {
Fprintf(stderr, "usage: txt2ppm txtfile ppmfile\n");
exit(EXIT_FAILURE);
}
if (!fopen_text_file(argv[1], RDTMODE))
exit(EXIT_FAILURE);
init_colormap();
if (!fopen_ppm_file(argv[2], WRBMODE)) {
(void) fclose_text_file();
exit(EXIT_FAILURE);
}
while (read_text_tile(pixels))
(void) write_ppm_tile(pixels);
(void) fclose_text_file();
(void) fclose_ppm_file();
exit(EXIT_SUCCESS);
/*NOTREACHED*/
return 0;
}
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