Function main

Utils/astc_rgbm_codec.cpp:35–173

#define MODE_DECODE 1

int main(int argc, char **argv)
{
	// Parse command line
	if (argc != 6)
	{
		printf("Usage: astc_rgbm_codec [-ch|-dh] <M> <low_clamp> <source> <dest>\n");
		exit(1);
	}

	int opmode;
	if (strcmp(argv[1], "-ch") == 0)
	{
		opmode = MODE_ENCODE;
	}
	else if (strcmp(argv[1], "-dh") == 0)
	{
		opmode = MODE_DECODE;
	}
	else
	{
		printf("ERROR: Bad operation mode\n");
		exit(1);
	}

 	float rgbm_multiplier = atof(argv[2]);
 	float low_clamp = atof(argv[3]);

	const char* src_file = argv[4];
	const char* dst_file = argv[5];

	// Convert an HDR input file into an RGBM encoded LDR file
	if (opmode == MODE_ENCODE)
	{
		// Load the input image
		int dim_x;
		int dim_y;
		const float* data_in = stbi_loadf(src_file, &dim_x, &dim_y, nullptr, 4);
		if (!data_in)
		{
			printf("ERROR: Failed to load input image.\n");
			exit(1);
		}

		// Allocate the output image
		uint8_t* data_out = (uint8_t*)malloc(4 * dim_y * dim_x);
		if (!data_out)
		{
			printf("ERROR: Failed to allow output image.\n");
			exit(1);
		}

		// For each pixel apply RGBM encoding
		for (int y = 0; y < dim_y; y++)
		{
			const float* row_in = data_in + (4 * dim_x * y);
			uint8_t* row_out = data_out + (4 * dim_x * y);

			for (int x = 0; x < dim_x; x++)