Moving GraphicsContext and dependencies from core to platform.

Source/core/platform/graphics/cpu/arm/filters/FEGaussianBlurNEON.h

-/*
- * Copyright (C) 2011 University of Szeged
- * Copyright (C) 2011 Zoltan Herczeg
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY UNIVERSITY OF SZEGED ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL UNIVERSITY OF SZEGED OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef FEGaussianBlurNEON_h
-#define FEGaussianBlurNEON_h
-
-#if HAVE(ARM_NEON_INTRINSICS)
-
-#include "core/platform/graphics/cpu/arm/filters/NEONHelpers.h"
-#include "core/platform/graphics/filters/FEGaussianBlur.h"
-
-namespace WebCore {
-
-inline void boxBlurNEON(Uint8ClampedArray* srcPixelArray, Uint8ClampedArray* dstPixelArray,
-                        unsigned dx, int dxLeft, int dxRight, int stride, int strideLine, int effectWidth, int effectHeight)
-{
-    uint32_t* sourcePixel = reinterpret_cast<uint32_t*>(srcPixelArray->data());
-    uint32_t* destinationPixel = reinterpret_cast<uint32_t*>(dstPixelArray->data());
-
-    float32x4_t deltaX = vdupq_n_f32(1.0 / dx);
-    int pixelLine = strideLine / 4;
-    int pixelStride = stride / 4;
-
-    for (int y = 0; y < effectHeight; ++y) {
-        int line = y * pixelLine;
-        float32x4_t sum = vdupq_n_f32(0);
-        // Fill the kernel
-        int maxKernelSize = std::min(dxRight, effectWidth);
-        for (int i = 0; i < maxKernelSize; ++i) {
-            float32x4_t sourcePixelAsFloat = loadRGBA8AsFloat(sourcePixel + line + i * pixelStride);
-            sum = vaddq_f32(sum, sourcePixelAsFloat);
-        }
-
-        // Blurring
-        for (int x = 0; x < effectWidth; ++x) {
-            int pixelOffset = line + x * pixelStride;
-            float32x4_t result = vmulq_f32(sum, deltaX);
-            storeFloatAsRGBA8(result, destinationPixel + pixelOffset);
-            if (x >= dxLeft) {
-                float32x4_t sourcePixelAsFloat = loadRGBA8AsFloat(sourcePixel + pixelOffset - dxLeft * pixelStride);
-                sum = vsubq_f32(sum, sourcePixelAsFloat);
-            }
-            if (x + dxRight < effectWidth) {
-                float32x4_t sourcePixelAsFloat = loadRGBA8AsFloat(sourcePixel + pixelOffset + dxRight * pixelStride);
-                sum = vaddq_f32(sum, sourcePixelAsFloat);
-            }
-        }
-    }
-}
-
-} // namespace WebCore
-
-#endif // HAVE(ARM_NEON_INTRINSICS)
-
-#endif // FEGaussianBlurNEON_h