1 /* 2 * Copyright (C) 2011 University of Szeged 3 * Copyright (C) 2011 Zoltan Herczeg 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY UNIVERSITY OF SZEGED ``AS IS'' AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL UNIVERSITY OF SZEGED OR 18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #ifndef FEGaussianBlurNEON_h 28 #define FEGaussianBlurNEON_h 29 30 #if HAVE(ARM_NEON_INTRINSICS) 31 32 #include "core/platform/graphics/cpu/arm/filters/NEONHelpers.h" 33 #include "core/platform/graphics/filters/FEGaussianBlur.h" 34 35 namespace WebCore { 36 37 inline void boxBlurNEON(Uint8ClampedArray* srcPixelArray, Uint8ClampedArray* dstPixelArray, 38 unsigned dx, int dxLeft, int dxRight, int stride, int strideLine, int effectWidth, int effectHeight) 39 { 40 uint32_t* sourcePixel = reinterpret_cast<uint32_t*>(srcPixelArray->data()); 41 uint32_t* destinationPixel = reinterpret_cast<uint32_t*>(dstPixelArray->data()); 42 43 float32x4_t deltaX = vdupq_n_f32(1.0 / dx); 44 int pixelLine = strideLine / 4; 45 int pixelStride = stride / 4; 46 47 for (int y = 0; y < effectHeight; ++y) { 48 int line = y * pixelLine; 49 float32x4_t sum = vdupq_n_f32(0); 50 // Fill the kernel 51 int maxKernelSize = std::min(dxRight, effectWidth); 52 for (int i = 0; i < maxKernelSize; ++i) { 53 float32x4_t sourcePixelAsFloat = loadRGBA8AsFloat(sourcePixel + line + i * pixelStride); 54 sum = vaddq_f32(sum, sourcePixelAsFloat); 55 } 56 57 // Blurring 58 for (int x = 0; x < effectWidth; ++x) { 59 int pixelOffset = line + x * pixelStride; 60 float32x4_t result = vmulq_f32(sum, deltaX); 61 storeFloatAsRGBA8(result, destinationPixel + pixelOffset); 62 if (x >= dxLeft) { 63 float32x4_t sourcePixelAsFloat = loadRGBA8AsFloat(sourcePixel + pixelOffset - dxLeft * pixelStride); 64 sum = vsubq_f32(sum, sourcePixelAsFloat); 65 } 66 if (x + dxRight < effectWidth) { 67 float32x4_t sourcePixelAsFloat = loadRGBA8AsFloat(sourcePixel + pixelOffset + dxRight * pixelStride); 68 sum = vaddq_f32(sum, sourcePixelAsFloat); 69 } 70 } 71 } 72 } 73 74 } // namespace WebCore 75 76 #endif // HAVE(ARM_NEON_INTRINSICS) 77 78 #endif // FEGaussianBlurNEON_h 79
