Method run

tools/buildclut.js:75–108

()

	}

	run() {
		let parts = this.splitPath(this.inputPath);
		parts.directory = this.outputPath;
		parts.extension = ".cct";
		let output = new FILE(this.joinPath(parts), "wb");

		let photoshopCLUT = new Uint8Array(this.readFileBuffer(this.inputPath));

		// 4:4:4 color table
		for (let i = 0, c = 0; i < 16; i++, c += 3) {
			output.writeByte((this.roundComponent(photoshopCLUT[c + 1]) & 0xF0) |
										(this.roundComponent(photoshopCLUT[c + 2]) >> 4));
			output.writeByte(this.roundComponent(photoshopCLUT[c + 0]) >> 4);
		}

		// inverse table from 4:4:4 to 16 CLUT
		for (let r = 0; r < 16; r++) {
			for (let g = 0; g < 16; g++) {
				for (let b = 0; b < 16; b++) {
					let nearest = this.findNearest(photoshopCLUT, r | (r << 4), g | (g << 4), b | (b << 4));
					output.writeByte(nearest);
				}
			}
		}

		// 5:6:5 color table
		for (let i = 0, c = 0; i < 16; i++, c += 3) {
			let pixel = ((photoshopCLUT[c + 0] >> 3) << 11) | ((photoshopCLUT[c + 1] >> 2) << 5) | (photoshopCLUT[c + 2] >> 3);
			output.writeByte(pixel & 0xFF);
			output.writeByte(pixel >> 8);
		}

		output.close();
	}

	findNearest(clut, r, g, b) {
		let bestDelta = 1000000;