various

testconvert.c

@@ -1,17 +1,16 @@
 #include <stdio.h>
 #include <stdint.h>
 
-typedef struct {
-	uint8_t hdr_byte;
-	uint8_t bpp;
-	uint16_t imgfmt;
-	uint16_t width;
+struct bmp_header {
+	uint8_t hdr_byte; // always 0
+	uint8_t bpp; // either 4 or 8, bits per pixel
+	uint16_t imgfmt; // always 3
+	uint16_t width; 
 	uint16_t height;
-	uint16_t bypl;
-	uint32_t zeroed;
-	uint16_t zeroed_2;
-} bmp_header;
-bmp_header input_hdr;
+	uint16_t bypl; // bytes per line
+};
+typedef struct bmp_header bmp_hdr;
+bmp_hdr header;
 int main(int argc, char** argv) {
 	if (argc != 2) {
 		printf("usage: %s <filename>\n", argv[0]);
@@ -28,13 +27,14 @@ int main(int argc, char** argv) {
 	while (1) {
 		c = getc(working_file);
 		if (c != EOF) {
-			printf("%u ", c);
-			if (i % 4 == 0) printf("\n");
+			// dump everything in the file to stdout, adding a newline every 16th byte, then prints the file length
 			i++;
+			printf("%u ", c);
+			if (i % 16 == 0) printf("\n");
 		} else {
 			printf("\n%i\n",i);
 			break;
 		}
 	}
 	return 0;
-}
+}