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53 lines
2.2 KiB
53 lines
2.2 KiB
// Copyright (c) Six Labors.
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// Licensed under the Apache License, Version 2.0.
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using System.Linq;
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using SixLabors.ImageSharp.Formats.Webp.Lossy;
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using SixLabors.ImageSharp.Tests.TestUtilities;
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using Xunit;
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namespace SixLabors.ImageSharp.Tests.Formats.WebP
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{
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[Trait("Format", "Webp")]
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public class QuantEncTests
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{
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private static unsafe void RunQuantizeBlockTest()
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{
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// arrange
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short[] input = { 378, 777, -851, 888, 259, 148, 0, -111, -185, -185, -74, -37, 148, 74, 111, 74 };
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short[] output = new short[16];
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ushort[] q = { 42, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37 };
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ushort[] iq = { 3120, 3542, 3542, 3542, 3542, 3542, 3542, 3542, 3542, 3542, 3542, 3542, 3542, 3542, 3542, 3542 };
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uint[] bias = { 49152, 55296, 55296, 55296, 55296, 55296, 55296, 55296, 55296, 55296, 55296, 55296, 55296, 55296, 55296, 55296 };
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uint[] zthresh = { 26, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21 };
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short[] expectedOutput = { 9, 21, 7, -5, 4, -23, 24, 0, -5, 4, 2, -2, -3, -1, 3, 2 };
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int expectedResult = 1;
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Vp8Matrix vp8Matrix = default;
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for (int i = 0; i < 16; i++)
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{
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vp8Matrix.Q[i] = q[i];
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vp8Matrix.IQ[i] = iq[i];
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vp8Matrix.Bias[i] = bias[i];
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vp8Matrix.ZThresh[i] = zthresh[i];
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}
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// act
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int actualResult = QuantEnc.QuantizeBlock(input, output, ref vp8Matrix);
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// assert
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Assert.True(output.SequenceEqual(expectedOutput));
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Assert.Equal(expectedResult, actualResult);
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}
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[Fact]
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public void QuantizeBlock_Works() => RunQuantizeBlockTest();
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#if SUPPORTS_RUNTIME_INTRINSICS
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[Fact]
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public void QuantizeBlock_WithHardwareIntrinsics_Works() => FeatureTestRunner.RunWithHwIntrinsicsFeature(RunQuantizeBlockTest, HwIntrinsics.AllowAll);
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[Fact]
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public void QuantizeBlock_WithoutHardwareIntrinsics_Works() => FeatureTestRunner.RunWithHwIntrinsicsFeature(RunQuantizeBlockTest, HwIntrinsics.DisableHWIntrinsic);
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#endif
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}
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}
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