display logo gfx, misc gfx related helpers

utils/bin2asm.c

@@ -0,0 +1,32 @@
+#include <stdio.h>
+#include <stdint.h>
+
+int main(int argc, char **argv) {
+	size_t count;
+
+	if(argc<1) {
+		fprintf(stderr, "Usage: %s <infile> \n", argv[0]);
+		return 1;
+	}
+	FILE* in;
+	if((in=fopen(argv[1], "rb"))==NULL) {
+		perror("could not open input file");
+		return 1;
+	}
+	printf("chgme   ");
+	count=0;
+	while(1) {
+		uint8_t c = fgetc(in);
+		if(feof(in)) break;
+		if(!(count%8)) {
+			if(count) printf("\n        ");
+			printf(".byt  $%02x", c);
+		} else {
+			printf(", $%02x", c);
+		}
+		count++;
+	}
+	fclose(in);
+	return 0;
+	
+}

utils/chili2chr.c

@@ -0,0 +1,78 @@
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+int main(int argc, char** argv) {
+	if(argc<2) {
+		printf("Usage: %s <input> <output>\nCurrently only 4-to-2-bit supported\n", argv[0]);
+	}
+	FILE *in, *out;
+	size_t in_off = 0, out_off = 0;
+	uint8_t pixperbyte, mask_shift, mask, depth, planeidx;
+	uint8_t current_pixel, current_in_tile;
+	int i,j;
+	if((in=fopen(argv[1], "rb"))==NULL) {
+		perror("Could not open input file");
+		return 1;
+	}
+	if((out=fopen(argv[2], "wb"))==NULL) {
+		perror("Could not open output file");
+		return 1;
+	}
+	size_t fsize, dsize;
+
+	fseek(in, 0, SEEK_END);
+	fsize = ftell(in);
+	fseek(in, 0, SEEK_SET);
+
+//	pixperbyte = 2;
+//	mask_shift = 4;
+//	mask = 0x03;
+//	depth = 2;
+// 4->2
+
+	pixperbyte = 1;
+	mask_shift = 0;
+	mask = 0xff;
+	depth = 8;
+// 8->8
+
+	dsize = fsize / pixperbyte;
+	uint16_t *obuf;
+
+	if((obuf=malloc(dsize))==NULL) {
+		perror("Could not reserve memory");
+		fclose(out);
+		fclose(in);
+		return 1;
+	}
+	memset(obuf, 0, dsize);
+	while (!feof(in)) {
+		uint8_t chunk = fgetc(in);
+		printf("%lX\n", out_off);
+		for(i=0; i<pixperbyte; i++) {
+			
+			current_pixel = (in_off*pixperbyte+i)%8;
+			current_in_tile = (in_off*pixperbyte+i)%64;
+			if(!current_pixel && in_off) { // after 8 pixels:
+				out_off++;
+			}
+			if(!current_in_tile && in_off) { // after 64 pixels:
+				out_off += (depth/2-1) * 8;
+			}
+			uint8_t bits = (chunk&mask);
+			chunk >>= mask_shift;
+			for(planeidx=0; planeidx < depth/2; planeidx++) {
+				for(j=0; j<2; j++) {
+					obuf[out_off+planeidx*8] |= ((bits & (1<<(j+2*planeidx))) >> (j+2*planeidx) << ((8*j+7)-current_pixel));
+				}
+			}
+		}
+		in_off++;
+	}
+	free(obuf);
+	fwrite(obuf, dsize, 1, out);
+	fclose(out);
+	fclose(in);
+}

utils/gentilemap.c

@@ -0,0 +1,23 @@
+#include <stdio.h>
+#include <stdint.h>
+
+int main(void) {
+uint16_t tile=64;
+uint16_t pad=0xa+64;
+	int i,j;
+	FILE *out;
+	if((out=fopen("tilemap", "wb"))==NULL) {
+		perror("Could not open output file 'tilemap'");
+		return 1;
+	}
+	for(i=0; i<12; i++) {
+		for(j=0; j<25; j++)	{
+			fwrite(&tile, 2, 1, out);
+			tile++;			
+		}
+		for(j=25; j<32; j++) {
+			fwrite(&pad, 2, 1, out);
+		}
+	}
+	fclose(out);
+}

utils/palremap.c

@@ -0,0 +1,29 @@
+#include <stdio.h>
+#include <stdint.h>
+
+int main(int argc, char **argv) {
+	if(argc<3) {
+		fprintf(stderr, "Usage: %s <infile> <outfile>\n", argv[0]);
+		return 1;
+	}
+	FILE *in, *out;
+	if((in=fopen(argv[1], "rb"))==NULL) {
+		perror("Could not open input file");
+		return 1;
+	}
+	if((out=fopen(argv[2], "wb"))==NULL) {
+		perror("Could not open output file");
+		return 1;
+	}
+	while(1) {
+		uint8_t c=fgetc(in);
+		if(feof(in))break;
+		if(c>=1 && c<=43) {
+			c+=212;
+		}
+		fputc(c, out);
+	}
+	fclose(out);
+	fclose(in);
+	return 0;
+}