dgr2png: always forget files somehow
This commit is contained in:
Vince Weaver
parent
30825d0fdf
commit
8c7aedf263
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@ -0,0 +1,187 @@
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/* Take two Apple II 40x48 15-color graphics images (MAIN and AUX) */
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/* and make a png file */
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <png.h>
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#define PAL_LENGTH 16 // PNG_MAX_PALETTE_LENGTH
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static int gr_offsets[24]={
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0x400-0x400,0x480-0x400,0x500-0x400,0x580-0x400,0x600-0x400,0x680-0x400,0x700-0x400,0x780-0x400,
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0x428-0x400,0x4A8-0x400,0x528-0x400,0x5A8-0x400,0x628-0x400,0x6A8-0x400,0x728-0x400,0x7A8-0x400,
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0x450-0x400,0x4D0-0x400,0x550-0x400,0x5D0-0x400,0x650-0x400,0x6D0-0x400,0x750-0x400,0x7D0-0x400,
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};
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int main(int argc, char **argv) {
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int fd;
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char filename[256];
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char main_screen[1024];
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char aux_screen[1024];
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FILE *output;
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int width=80,height=48,y,x;
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png_byte color_type=PNG_COLOR_TYPE_PALETTE;
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png_byte bit_depth=8;
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png_structp png_ptr;
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png_infop info_ptr;
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// int number_of_passes;
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png_bytep *row_pointers;
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png_colorp palette;
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png_color *col;
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if (argc<2) {
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fprintf(stderr,"Usage: gr2png MAIN AUX OUTPUT\n");
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fprintf(stderr," where MAIN/AUX are 1k AppleII LORES image\n\n");
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return -1;
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}
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if (argc<3) {
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sprintf(filename,"%s.png",argv[1]);
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}
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else {
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strncpy(filename,argv[3],256-1);
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}
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fd=open(argv[1],O_RDONLY);
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if (fd<0) {
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printf("Error opening %s! %s\n",argv[1],strerror(errno));
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return -1;
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}
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read(fd,main_screen,1024);
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close(fd);
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fd=open(argv[2],O_RDONLY);
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if (fd<0) {
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printf("Error opening %s! %s\n",argv[2],strerror(errno));
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return -1;
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}
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read(fd,aux_screen,1024);
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close(fd);
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output = fopen(filename, "wb");
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if (output==NULL) {
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printf("Error opening %s, %s\n",filename,strerror(errno));
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return -1;
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}
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/* initialize */
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png_ptr = png_create_write_struct(
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PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
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if (png_ptr==NULL) {
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fprintf(stderr,"Error! png_create_write_struct() failed\n");
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return -1;
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}
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info_ptr = png_create_info_struct(png_ptr);
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if (info_ptr==NULL) {
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fprintf(stderr,"Error! png_create_info_struct() failed\n");
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return -1;
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}
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// setjmp(png_jmpbuf(png_ptr));
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png_init_io(png_ptr, output);
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/* write header */
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// setjmp(png_jmpbuf(png_ptr));
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png_set_IHDR(png_ptr, info_ptr, width, height,
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bit_depth, color_type, PNG_INTERLACE_NONE,
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PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
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// png_write_info(png_ptr, info_ptr);
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/* set palette */
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palette = (png_colorp)png_malloc(png_ptr,
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PAL_LENGTH * (sizeof (png_color)));
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/* 0: black */
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col=&palette[0]; col->red=0x00; col->green=0x00; col->blue=0x00;
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/* 1: magenta */
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col=&palette[1]; col->red=0xe3; col->green=0x1e; col->blue=0x60;
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/* 2: dark blue */
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col=&palette[2]; col->red=0x60; col->green=0x4e; col->blue=0xbd;
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/* 3: purple */
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col=&palette[3]; col->red=0xff; col->green=0x44; col->blue=0xfd;
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/* 4: dark green */
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col=&palette[4]; col->red=0x00; col->green=0xa3; col->blue=0x60;
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/* 5: grey 1 */
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col=&palette[5]; col->red=0x9c; col->green=0x9c; col->blue=0x9c;
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/* 6: medium blue */
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col=&palette[6]; col->red=0x14; col->green=0xcf; col->blue=0xfd;
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/* 7: light blue */
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col=&palette[7]; col->red=0xd0; col->green=0xc3; col->blue=0xff;
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/* 8: brown */
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col=&palette[8]; col->red=0x60; col->green=0x72; col->blue=0x03;
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/* 9: orange */
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col=&palette[9]; col->red=0xff; col->green=0x6a; col->blue=0x3c;
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/* 10: gray 2 */
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col=&palette[10]; col->red=0x9d; col->green=0x9d; col->blue=0x9d;
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/* 11: pink */
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col=&palette[11]; col->red=0xff; col->green=0xa0; col->blue=0xd0;
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/* 12: bright green */
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col=&palette[12]; col->red=0x14; col->green=0xf5; col->blue=0x3c;
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/* 13: yellow */
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col=&palette[13]; col->red=0xd0; col->green=0xdd; col->blue=0x8d;
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/* 14: aqua */
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col=&palette[14]; col->red=0x72; col->green=0xff; col->blue=0xd0;
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/* 15: white */
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col=&palette[15]; col->red=0xff; col->green=0xff; col->blue=0xff;
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/* ... Set palette colors ... */
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png_set_PLTE(png_ptr, info_ptr, palette, PAL_LENGTH);
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png_write_info(png_ptr, info_ptr);
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row_pointers = (png_bytep*)malloc(sizeof(png_bytep) * height);
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for(y=0;y<height;y++) {
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row_pointers[y]=malloc(width);
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}
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/*********************************************/
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/* do the actual conversion */
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/*********************************************/
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int color1,color2;
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for(y=0;y<height/2;y++) {
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for(x=0;x<40;x++) {
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color1=(aux_screen[gr_offsets[y]+x])&0xf;
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row_pointers[y*2][x*2]=color1;
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color2=(main_screen[gr_offsets[y]+x])&0xf;
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row_pointers[y*2][(x*2)+1]=color2;
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color1=((aux_screen[gr_offsets[y]+x])>>4)&0xf;
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row_pointers[(y*2)+1][x*2]=color1;
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color2=((main_screen[gr_offsets[y]+x])>>4)&0xf;
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row_pointers[(y*2)+1][(x*2)+1]=color2;
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}
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}
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png_write_image(png_ptr, row_pointers);
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png_write_end(png_ptr, NULL);
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/* cleanup heap allocation */
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for (y=0; y<height; y++) {
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free(row_pointers[y]);
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}
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free(row_pointers);
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fclose(output);
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return 0;
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}
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