dreamcast_camera.c

#include <stdio.h>
#include <string.h>

int main(int argc, char **argv)
{
	FILE *in_f, *out_f;
	unsigned int width = 160;
	unsigned int height = 120;
	unsigned int w, h, len = width * height * 3 / 2;
	char out[len], in[len];

	memset(out, 0xff, sizeof(out));

	in_f = fopen("../frame01.raw", "r");
	out_f = fopen("converted.raw", "w");

	if (!in_f || !out_f) {
		fprintf(stderr, "Cannot open files\n");
		return -1;
	}

	fread(in, 1, len, in_f);

	for (h = 0; h < height / 2; h++) {
		/* Y data on even lines is stored sequentially */
		memcpy(&out[h * 2 * width], &in[h * width * 3], width);

		/* Odd lines contain YUYV */
		for (w = 0; w < width; w++)
			out[(h * 2 + 1) * width + w] = in[(h * 3 + 1) * width + w * 2];

		for (w = 0; w < width; w++)
			out[(height + h) * width + w] = in[(h * 3 + 1) * width + w * 2 + 1];
	}

	fwrite(out, 1, len, out_f);

	fclose(in_f);
	fclose(out_f);
	return 0;
}