Fix skia bug 2845

src/opts/SkBlurImage_opts_neon.cpp

 /*
  * Copyright 2013 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "SkBitmap.h"
 #include "SkColorPriv.h"
@@ skipping 105 matching lines @@
                     int leftOffset, int rightOffset, int width, int height)
 {
     const int rightBorder = SkMin32(rightOffset + 1, width);
     const int srcStrideX = srcDirection == kX ? 1 : srcStride;
     const int dstStrideX = dstDirection == kX ? 1 : height;
     const int srcStrideY = srcDirection == kX ? srcStride : 1;
     const int dstStrideY = dstDirection == kX ? width : 1;
     const uint32x4_t scale = vdupq_n_u32((1 << 24) / kernelSize);
     const uint32x4_t half = vdupq_n_u32(1 << 23);
 
-    if (kernelSize < 128)
+    if (1 < kernelSize && kernelSize < 128)
     {
         SkDoubleRowBoxBlur_NEON<srcDirection, dstDirection>(&src, srcStride, &dst, kernelSize,
             leftOffset, rightOffset, width, &height);
     }
 
     for (; height > 0; height--) {
         uint32x4_t sum = vdupq_n_u32(0);
         const SkPMColor* p = src;
         for (int i = 0; i < rightBorder; ++i) {
             sum = vaddw_u16(sum, expand(*p));
@@ skipping 42 matching lines @@
 bool SkBoxBlurGetPlatformProcs_NEON(SkBoxBlurProc* boxBlurX,
                                     SkBoxBlurProc* boxBlurY,
                                     SkBoxBlurProc* boxBlurXY,
                                     SkBoxBlurProc* boxBlurYX) {
     *boxBlurX = SkBoxBlur_NEON<kX, kX>;
     *boxBlurY = SkBoxBlur_NEON<kY, kY>;
     *boxBlurXY = SkBoxBlur_NEON<kX, kY>;
     *boxBlurYX = SkBoxBlur_NEON<kY, kX>;
     return true;
 }