NEON fast path for box blur

bench/BlurImageFilterBench.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBenchmark.h"
 #include "SkBitmapDevice.h"
 #include "SkBlurImageFilter.h"
 #include "SkCanvas.h"
 #include "SkPaint.h"
 #include "SkRandom.h"
 #include "SkShader.h"
 #include "SkString.h"
 
 #define FILTER_WIDTH_SMALL  32
 #define FILTER_HEIGHT_SMALL 32
 #define FILTER_WIDTH_LARGE  256
 #define FILTER_HEIGHT_LARGE 256
 #define BLUR_SIGMA_SMALL    1.0f
 #define BLUR_SIGMA_LARGE    10.0f
+#define BLUR_SIGMA_HUGE     80.0f
 
 class BlurImageFilterBench : public SkBenchmark {
 public:
     BlurImageFilterBench(SkScalar sigmaX, SkScalar sigmaY,  bool small) :
         fIsSmall(small), fInitialized(false), fSigmaX(sigmaX), fSigmaY(sigmaY) {
         fName.printf("blur_image_filter_%s_%.2f_%.2f", fIsSmall ? "small" : "large",
             SkScalarToFloat(sigmaX), SkScalarToFloat(sigmaY));
     }
 
 protected:
@@ skipping 52 matching lines @@
 };
 
 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_LARGE, 0, false);)
 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_SMALL, 0, false);)
 DEF_BENCH(return new BlurImageFilterBench(0, BLUR_SIGMA_LARGE, false);)
 DEF_BENCH(return new BlurImageFilterBench(0, BLUR_SIGMA_SMALL, false);)
 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_SMALL, BLUR_SIGMA_SMALL, true);)
 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_SMALL, BLUR_SIGMA_SMALL, false);)
 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_LARGE, BLUR_SIGMA_LARGE, true);)
 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_LARGE, BLUR_SIGMA_LARGE, false);)
+DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_HUGE, BLUR_SIGMA_HUGE, true);)
+DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_HUGE, BLUR_SIGMA_HUGE, false);)