import net.runelite.mapping.Export;
import net.runelite.mapping.Implements;
import net.runelite.mapping.ObfuscatedGetter;
import net.runelite.mapping.ObfuscatedName;
import net.runelite.mapping.ObfuscatedSignature;

@ObfuscatedName("dn")
@Implements("Decimator")
public class Decimator {
	@ObfuscatedName("ig")
	@ObfuscatedGetter(
		intValue = -303993957
	)
	@Export("oculusOrbFocalPointY")
	static int oculusOrbFocalPointY;
	@ObfuscatedName("w")
	@ObfuscatedGetter(
		intValue = -1543125857
	)
	@Export("inputRate")
	int inputRate;
	@ObfuscatedName("t")
	@ObfuscatedGetter(
		intValue = 1624874363
	)
	@Export("outputRate")
	int outputRate;
	@ObfuscatedName("j")
	@Export("table")
	int[][] table;

	public Decimator(int var1, int var2) {
		if (var2 != var1) {
			int var4 = var1;
			int var5 = var2;
			if (var2 > var1) {
				var4 = var2;
				var5 = var1;
			}

			while (var5 != 0) {
				int var6 = var4 % var5;
				var4 = var5;
				var5 = var6;
			}

			var1 /= var4;
			var2 /= var4;
			this.inputRate = var1;
			this.outputRate = var2;
			this.table = new int[var1][14];

			for (int var7 = 0; var7 < var1; ++var7) {
				int[] var8 = this.table[var7];
				double var9 = 6.0D + (double)var7 / (double)var1;
				int var11 = (int)Math.floor(1.0D + (var9 - 7.0D));
				if (var11 < 0) {
					var11 = 0;
				}

				int var12 = (int)Math.ceil(7.0D + var9);
				if (var12 > 14) {
					var12 = 14;
				}

				for (double var13 = (double)var2 / (double)var1; var11 < var12; ++var11) {
					double var15 = 3.141592653589793D * ((double)var11 - var9);
					double var17 = var13;
					if (var15 < -1.0E-4D || var15 > 1.0E-4D) {
						var17 = var13 * (Math.sin(var15) / var15);
					}

					var17 *= 0.54D + 0.46D * Math.cos(((double)var11 - var9) * 0.2243994752564138D);
					var8[var11] = (int)Math.floor(var17 * 65536.0D + 0.5D);
				}
			}

		}
	}

	@ObfuscatedName("h")
	@ObfuscatedSignature(
		descriptor = "([BI)[B",
		garbageValue = "-77952931"
	)
	@Export("resample")
	byte[] resample(byte[] var1) {
		if (this.table != null) {
			int var2 = (int)((long)var1.length * (long)this.outputRate / (long)this.inputRate) + 14;
			int[] var3 = new int[var2];
			int var4 = 0;
			int var5 = 0;

			int var6;
			for (var6 = 0; var6 < var1.length; ++var6) {
				byte var7 = var1[var6];
				int[] var8 = this.table[var5];

				int var9;
				for (var9 = 0; var9 < 14; ++var9) {
					var3[var4 + var9] += var8[var9] * var7;
				}

				var5 += this.outputRate;
				var9 = var5 / this.inputRate;
				var4 += var9;
				var5 -= var9 * this.inputRate;
			}

			var1 = new byte[var2];

			for (var6 = 0; var6 < var2; ++var6) {
				int var10 = var3[var6] + 32768 >> 16;
				if (var10 < -128) {
					var1[var6] = -128;
				} else if (var10 > 127) {
					var1[var6] = 127;
				} else {
					var1[var6] = (byte)var10;
				}
			}
		}

		return var1;
	}

	@ObfuscatedName("v")
	@ObfuscatedSignature(
		descriptor = "(IB)I",
		garbageValue = "-4"
	)
	@Export("scaleRate")
	int scaleRate(int var1) {
		if (this.table != null) {
			var1 = (int)((long)this.outputRate * (long)var1 / (long)this.inputRate);
		}

		return var1;
	}

	@ObfuscatedName("x")
	@ObfuscatedSignature(
		descriptor = "(IB)I",
		garbageValue = "-38"
	)
	@Export("scalePosition")
	int scalePosition(int var1) {
		if (this.table != null) {
			var1 = (int)((long)var1 * (long)this.outputRate / (long)this.inputRate) + 6;
		}

		return var1;
	}

	@ObfuscatedName("x")
	@ObfuscatedSignature(
		descriptor = "(II)Z",
		garbageValue = "319524550"
	)
	public static boolean method2598(int var0) {
		return (var0 >> 21 & 1) != 0;
	}
}