BizHawk/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Palettes.cs

namespace BizHawk.Emulation.Cores.Nintendo.NES
{
	public static class Palettes
	{
		static float[] rtmul = { 1.239f, 0.794f, 1.019f, 0.905f, 1.023f, 0.741f, 0.75f };
		static float[] gtmul = { 0.915f, 1.086f, 0.98f, 1.026f, 0.908f, 0.987f, 0.75f };
		static float[] btmul = { 0.743f, 0.882f, 0.653f, 1.277f, 0.979f, 0.101f, 0.75f };

		public static void ApplyDeemphasis(ref int r, ref int g, ref int b, int deemph_bits)
		{
			//DEEMPH BITS MAY BE ORDERED WRONG. PLEASE CHECK
			if (deemph_bits == 0) return;
			int d = deemph_bits - 1;
			r = (int)(r * rtmul[d]);
			g = (int)(g * gtmul[d]);
			b = (int)(b * btmul[d]);
			if (r > 0xFF) r = 0xFF;
			if (g > 0xFF) g = 0xFF;
			if (b > 0xFF) b = 0xFF;
		}

		/// <summary>
		/// Loads a simple 192 byte (64 entry RGB888) or 1536 byte (64*8 = 512 entry) palette which is FCEUX format (and probably other emulators as well)
		/// The 512-entry format is new and backwards compatible. (actually, the 512-entry format extra data isnt used yet, I just edited this to support the larger quicknes file i committed)
		/// </summary>
		/// <param name="fileContents">192 or 1536 bytes, the contents of the palette file</param>
		public static int[,] Load_FCEUX_Palette(byte[] fileContents)
		{
			//'validate' file, solely by length
			if (fileContents.Length == 1536) { }
			else if (fileContents.Length != 192) return null;

			int[,] ret = new int[64, 3];
			int i = 0;
			for (int c = 0; c < 64; c++)
			{
				for (int z = 0; z < 3; z++)
					ret[c, z] = fileContents[i++];
			}
			return ret;
		}

		const int SHIFT = 2;
		public static int[,] FCEUX_Standard = new int[,]
		{
			{ 0x1D<<SHIFT, 0x1D<<SHIFT, 0x1D<<SHIFT }, /* Value 0 */
			{ 0x09<<SHIFT, 0x06<<SHIFT, 0x23<<SHIFT }, /* Value 1 */
			{ 0x00<<SHIFT, 0x00<<SHIFT, 0x2A<<SHIFT }, /* Value 2 */
			{ 0x11<<SHIFT, 0x00<<SHIFT, 0x27<<SHIFT }, /* Value 3 */
			{ 0x23<<SHIFT, 0x00<<SHIFT, 0x1D<<SHIFT }, /* Value 4 */
			{ 0x2A<<SHIFT, 0x00<<SHIFT, 0x04<<SHIFT }, /* Value 5 */
			{ 0x29<<SHIFT, 0x00<<SHIFT, 0x00<<SHIFT }, /* Value 6 */
			{ 0x1F<<SHIFT, 0x02<<SHIFT, 0x00<<SHIFT }, /* Value 7 */
			{ 0x10<<SHIFT, 0x0B<<SHIFT, 0x00<<SHIFT }, /* Value 8 */
			{ 0x00<<SHIFT, 0x11<<SHIFT, 0x00<<SHIFT }, /* Value 9 */
			{ 0x00<<SHIFT, 0x14<<SHIFT, 0x00<<SHIFT }, /* Value 10 */
			{ 0x00<<SHIFT, 0x0F<<SHIFT, 0x05<<SHIFT }, /* Value 11 */
			{ 0x06<<SHIFT, 0x0F<<SHIFT, 0x17<<SHIFT }, /* Value 12 */
			{ 0x00<<SHIFT, 0x00<<SHIFT, 0x00<<SHIFT }, /* Value 13 */
			{ 0x00<<SHIFT, 0x00<<SHIFT, 0x00<<SHIFT }, /* Value 14 */
			{ 0x00<<SHIFT, 0x00<<SHIFT, 0x00<<SHIFT }, /* Value 15 */
			{ 0x2F<<SHIFT, 0x2F<<SHIFT, 0x2F<<SHIFT }, /* Value 16 */
			{ 0x00<<SHIFT, 0x1C<<SHIFT, 0x3B<<SHIFT }, /* Value 17 */
			{ 0x08<<SHIFT, 0x0E<<SHIFT, 0x3B<<SHIFT }, /* Value 18 */
			{ 0x20<<SHIFT, 0x00<<SHIFT, 0x3C<<SHIFT }, /* Value 19 */
			{ 0x2F<<SHIFT, 0x00<<SHIFT, 0x2F<<SHIFT }, /* Value 20 */
			{ 0x39<<SHIFT, 0x00<<SHIFT, 0x16<<SHIFT }, /* Value 21 */
			{ 0x36<<SHIFT, 0x0A<<SHIFT, 0x00<<SHIFT }, /* Value 22 */
			{ 0x32<<SHIFT, 0x13<<SHIFT, 0x03<<SHIFT }, /* Value 23 */
			{ 0x22<<SHIFT, 0x1C<<SHIFT, 0x00<<SHIFT }, /* Value 24 */
			{ 0x00<<SHIFT, 0x25<<SHIFT, 0x00<<SHIFT }, /* Value 25 */
			{ 0x00<<SHIFT, 0x2A<<SHIFT, 0x00<<SHIFT }, /* Value 26 */
			{ 0x00<<SHIFT, 0x24<<SHIFT, 0x0E<<SHIFT }, /* Value 27 */
			{ 0x00<<SHIFT, 0x20<<SHIFT, 0x22<<SHIFT }, /* Value 28 */
			{ 0x00<<SHIFT, 0x00<<SHIFT, 0x00<<SHIFT }, /* Value 29 */
			{ 0x00<<SHIFT, 0x00<<SHIFT, 0x00<<SHIFT }, /* Value 30 */
			{ 0x00<<SHIFT, 0x00<<SHIFT, 0x00<<SHIFT }, /* Value 31 */
			{ 0x3F<<SHIFT, 0x3F<<SHIFT, 0x3F<<SHIFT }, /* Value 32 */
			{ 0x0F<<SHIFT, 0x2F<<SHIFT, 0x3F<<SHIFT }, /* Value 33 */
			{ 0x17<<SHIFT, 0x25<<SHIFT, 0x3F<<SHIFT }, /* Value 34 */
			{ 0x10<<SHIFT, 0x22<<SHIFT, 0x3F<<SHIFT }, /* Value 35 */
			{ 0x3D<<SHIFT, 0x1E<<SHIFT, 0x3F<<SHIFT }, /* Value 36 */
			{ 0x3F<<SHIFT, 0x1D<<SHIFT, 0x2D<<SHIFT }, /* Value 37 */
			{ 0x3F<<SHIFT, 0x1D<<SHIFT, 0x18<<SHIFT }, /* Value 38 */
			{ 0x3F<<SHIFT, 0x26<<SHIFT, 0x0E<<SHIFT }, /* Value 39 */
			{ 0x3C<<SHIFT, 0x2F<<SHIFT, 0x0F<<SHIFT }, /* Value 40 */
			{ 0x20<<SHIFT, 0x34<<SHIFT, 0x04<<SHIFT }, /* Value 41 */
			{ 0x13<<SHIFT, 0x37<<SHIFT, 0x12<<SHIFT }, /* Value 42 */
			{ 0x16<<SHIFT, 0x3E<<SHIFT, 0x26<<SHIFT }, /* Value 43 */
			{ 0x00<<SHIFT, 0x3A<<SHIFT, 0x36<<SHIFT }, /* Value 44 */
			{ 0x1E<<SHIFT, 0x1E<<SHIFT, 0x1E<<SHIFT }, /* Value 45 */
			{ 0x00<<SHIFT, 0x00<<SHIFT, 0x00<<SHIFT }, /* Value 46 */
			{ 0x00<<SHIFT, 0x00<<SHIFT, 0x00<<SHIFT }, /* Value 47 */
			{ 0x3F<<SHIFT, 0x3F<<SHIFT, 0x3F<<SHIFT }, /* Value 48 */
			{ 0x2A<<SHIFT, 0x39<<SHIFT, 0x3F<<SHIFT }, /* Value 49 */
			{ 0x31<<SHIFT, 0x35<<SHIFT, 0x3F<<SHIFT }, /* Value 50 */
			{ 0x35<<SHIFT, 0x32<<SHIFT, 0x3F<<SHIFT }, /* Value 51 */
			{ 0x3F<<SHIFT, 0x31<<SHIFT, 0x3F<<SHIFT }, /* Value 52 */
			{ 0x3F<<SHIFT, 0x31<<SHIFT, 0x36<<SHIFT }, /* Value 53 */
			{ 0x3F<<SHIFT, 0x2F<<SHIFT, 0x2C<<SHIFT }, /* Value 54 */
			{ 0x3F<<SHIFT, 0x36<<SHIFT, 0x2A<<SHIFT }, /* Value 55 */
			{ 0x3F<<SHIFT, 0x39<<SHIFT, 0x28<<SHIFT }, /* Value 56 */
			{ 0x38<<SHIFT, 0x3F<<SHIFT, 0x28<<SHIFT }, /* Value 57 */
			{ 0x2A<<SHIFT, 0x3C<<SHIFT, 0x2F<<SHIFT }, /* Value 58 */
			{ 0x2C<<SHIFT, 0x3F<<SHIFT, 0x33<<SHIFT }, /* Value 59 */
			{ 0x27<<SHIFT, 0x3F<<SHIFT, 0x3C<<SHIFT }, /* Value 60 */
			{ 0x31<<SHIFT, 0x31<<SHIFT, 0x31<<SHIFT }, /* Value 61 */
			{ 0x00<<SHIFT, 0x00<<SHIFT, 0x00<<SHIFT }, /* Value 62 */
			{ 0x00<<SHIFT, 0x00<<SHIFT, 0x00<<SHIFT }, /* Value 63 */
		};

		public static int[,] QuickNESPalette = 
		{
			{102, 102, 102},
			{0, 42, 136},
			{20, 18, 168},
			{59, 0, 164},
			{92, 0, 126},
			{110, 0, 64},
			{108, 7, 0},
			{87, 29, 0},
			{52, 53, 0},
			{12, 73, 0},
			{0, 82, 0},
			{0, 79, 8},
			{0, 64, 78},
			{0, 0, 0},
			{0, 0, 0},
			{0, 0, 0},
			{174, 174, 174},
			{21, 95, 218},
			{66, 64, 254},
			{118, 39, 255},
			{161, 27, 205},
			{184, 30, 124},
			{181, 50, 32},
			{153, 79, 0},
			{108, 110, 0},
			{56, 135, 0},
			{13, 148, 0},
			{0, 144, 50},
			{0, 124, 142},
			{0, 0, 0},
			{0, 0, 0},
			{0, 0, 0},
			{254, 254, 254},
			{100, 176, 254},
			{147, 144, 254},
			{199, 119, 254},
			{243, 106, 254},
			{254, 110, 205},
			{254, 130, 112},
			{235, 159, 35},
			{189, 191, 0},
			{137, 217, 0},
			{93, 229, 48},
			{69, 225, 130},
			{72, 206, 223},
			{79, 79, 79},
			{0, 0, 0},
			{0, 0, 0},
			{254, 254, 254},
			{193, 224, 254},
			{212, 211, 254},
			{233, 200, 254},
			{251, 195, 254},
			{254, 197, 235},
			{254, 205, 198},
			{247, 217, 166},
			{229, 230, 149},
			{208, 240, 151},
			{190, 245, 171},
			{180, 243, 205},
			{181, 236, 243},
			{184, 184, 184},
			{0, 0, 0},
			{0, 0, 0},
		};
	} //class palettes
} //namespace