Add benchmarks to compare execution times.
Run "go test -bench LargeJpegThumb" to benchmark all functions at once.
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@ -78,3 +78,47 @@ func Benchmark_Reduction(b *testing.B) {
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}
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m.At(0, 0)
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}
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// Benchmark resize of 16 MPix jpeg image to 800px width.
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func jpegThumb(b *testing.B, interp InterpolationFunction) {
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input := image.NewYCbCr(image.Rect(0, 0, 4896, 3264), image.YCbCrSubsampleRatio422)
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var output image.Image
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for i := 0; i < b.N; i++ {
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output = Resize(800, 0, input, interp)
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}
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output.At(0, 0)
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}
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func Benchmark_LargeJpegThumbNearestNeighbor(b *testing.B) {
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jpegThumb(b, NearestNeighbor)
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}
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func Benchmark_LargeJpegThumbBilinear(b *testing.B) {
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jpegThumb(b, Bilinear)
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}
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func Benchmark_LargeJpegThumbBicubic(b *testing.B) {
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jpegThumb(b, Bicubic)
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}
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func Benchmark_LargeJpegThumbMitchellNetravali(b *testing.B) {
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jpegThumb(b, MitchellNetravali)
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}
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func Benchmark_LargeJpegThumbLanczos2Lut(b *testing.B) {
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jpegThumb(b, Lanczos2Lut)
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}
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func Benchmark_LargeJpegThumbLanczos2(b *testing.B) {
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jpegThumb(b, Lanczos2)
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}
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func Benchmark_LargeJpegThumbLanczos3Lut(b *testing.B) {
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jpegThumb(b, Lanczos3Lut)
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}
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func Benchmark_LargeJpegThumbLanczos3(b *testing.B) {
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jpegThumb(b, Lanczos3)
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}
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