Move all filters-related files from core/platform to platform.

Source/core/platform/graphics/filters/FEBlend.cpp

Index: Source/core/platform/graphics/filters/FEBlend.cpp
diff --git a/Source/core/platform/graphics/filters/FEBlend.cpp b/Source/core/platform/graphics/filters/FEBlend.cpp
deleted file mode 100644
index 524013b71fcc3b8c8e8ba3017a09456ffbc2f39e..0000000000000000000000000000000000000000
--- a/Source/core/platform/graphics/filters/FEBlend.cpp
+++ /dev/null
@@ -1,286 +0,0 @@
-/*
- * Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
- * Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
- * Copyright (C) 2005 Eric Seidel <eric@webkit.org>
- * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
- * Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies)
- * Copyright (C) 2013 Google Inc. All rights reserved.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public License
- * along with this library; see the file COPYING.LIB.  If not, write to
- * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- */
-
-#include "config.h"
-
-#include "core/platform/graphics/cpu/arm/filters/FEBlendNEON.h"
-#include "core/platform/graphics/filters/FEBlend.h"
-#include "platform/graphics/GraphicsContext.h"
-#include "platform/graphics/filters/SkiaImageFilterBuilder.h"
-#include "platform/graphics/skia/NativeImageSkia.h"
-#include "platform/text/TextStream.h"
-#include "wtf/Uint8ClampedArray.h"
-
-#include "SkBitmapSource.h"
-#include "SkXfermodeImageFilter.h"
-
-typedef unsigned char (*BlendType)(unsigned char colorA, unsigned char colorB, unsigned char alphaA, unsigned char alphaB);
-
-namespace WebCore {
-
-FEBlend::FEBlend(Filter* filter, BlendModeType mode)
-    : FilterEffect(filter)
-    , m_mode(mode)
-{
-}
-
-PassRefPtr<FEBlend> FEBlend::create(Filter* filter, BlendModeType mode)
-{
-    return adoptRef(new FEBlend(filter, mode));
-}
-
-BlendModeType FEBlend::blendMode() const
-{
-    return m_mode;
-}
-
-bool FEBlend::setBlendMode(BlendModeType mode)
-{
-    if (m_mode == mode)
-        return false;
-    m_mode = mode;
-    return true;
-}
-
-static inline unsigned char fastDivideBy255(uint16_t value)
-{
-    // This is an approximate algorithm for division by 255, but it gives accurate results for 16bit values.
-    uint16_t quotient = value >> 8;
-    uint16_t remainder = value - (quotient * 255) + 1;
-    return quotient + (remainder >> 8);
-}
-
-inline unsigned char feBlendNormal(unsigned char colorA, unsigned char colorB, unsigned char alphaA, unsigned char)
-{
-    return fastDivideBy255((255 - alphaA) * colorB + colorA * 255);
-}
-
-inline unsigned char feBlendMultiply(unsigned char colorA, unsigned char colorB, unsigned char alphaA, unsigned char alphaB)
-{
-    return fastDivideBy255((255 - alphaA) * colorB + (255 - alphaB + colorB) * colorA);
-}
-
-inline unsigned char feBlendScreen(unsigned char colorA, unsigned char colorB, unsigned char, unsigned char)
-{
-    return fastDivideBy255((colorB + colorA) * 255 - colorA * colorB);
-}
-
-inline unsigned char feBlendDarken(unsigned char colorA, unsigned char colorB, unsigned char alphaA, unsigned char alphaB)
-{
-    return fastDivideBy255(std::min((255 - alphaA) * colorB + colorA * 255, (255 - alphaB) * colorA + colorB * 255));
-}
-
-inline unsigned char feBlendLighten(unsigned char colorA, unsigned char colorB, unsigned char alphaA, unsigned char alphaB)
-{
-    return fastDivideBy255(std::max((255 - alphaA) * colorB + colorA * 255, (255 - alphaB) * colorA + colorB * 255));
-}
-
-inline unsigned char feBlendUnknown(unsigned char, unsigned char, unsigned char, unsigned char)
-{
-    return 0;
-}
-
-template<BlendType BlendFunction>
-static void platformApply(unsigned char* sourcePixelA, unsigned char* sourcePixelB,
-                          unsigned char* destinationPixel, unsigned pixelArrayLength)
-{
-    unsigned len = pixelArrayLength / 4;
-    for (unsigned pixelOffset = 0; pixelOffset < len; pixelOffset++) {
-        unsigned char alphaA = sourcePixelA[3];
-        unsigned char alphaB = sourcePixelB[3];
-        destinationPixel[0] = BlendFunction(sourcePixelA[0], sourcePixelB[0], alphaA, alphaB);
-        destinationPixel[1] = BlendFunction(sourcePixelA[1], sourcePixelB[1], alphaA, alphaB);
-        destinationPixel[2] = BlendFunction(sourcePixelA[2], sourcePixelB[2], alphaA, alphaB);
-        destinationPixel[3] = 255 - fastDivideBy255((255 - alphaA) * (255 - alphaB));
-        sourcePixelA += 4;
-        sourcePixelB += 4;
-        destinationPixel += 4;
-    }
-}
-
-void FEBlend::platformApplyGeneric(unsigned char* sourcePixelA, unsigned char* sourcePixelB,
-                                   unsigned char* destinationPixel, unsigned pixelArrayLength)
-{
-    switch (m_mode) {
-    case FEBLEND_MODE_NORMAL:
-        platformApply<feBlendNormal>(sourcePixelA, sourcePixelB, destinationPixel, pixelArrayLength);
-        break;
-    case FEBLEND_MODE_MULTIPLY:
-        platformApply<feBlendMultiply>(sourcePixelA, sourcePixelB, destinationPixel, pixelArrayLength);
-        break;
-    case FEBLEND_MODE_SCREEN:
-        platformApply<feBlendScreen>(sourcePixelA, sourcePixelB, destinationPixel, pixelArrayLength);
-        break;
-    case FEBLEND_MODE_DARKEN:
-        platformApply<feBlendDarken>(sourcePixelA, sourcePixelB, destinationPixel, pixelArrayLength);
-        break;
-    case FEBLEND_MODE_LIGHTEN:
-        platformApply<feBlendLighten>(sourcePixelA, sourcePixelB, destinationPixel, pixelArrayLength);
-        break;
-    case FEBLEND_MODE_UNKNOWN:
-        platformApply<feBlendUnknown>(sourcePixelA, sourcePixelB, destinationPixel, pixelArrayLength);
-        break;
-    }
-}
-
-void FEBlend::applySoftware()
-{
-    FilterEffect* in = inputEffect(0);
-    FilterEffect* in2 = inputEffect(1);
-
-    ASSERT(m_mode > FEBLEND_MODE_UNKNOWN);
-    ASSERT(m_mode <= FEBLEND_MODE_LIGHTEN);
-
-    Uint8ClampedArray* dstPixelArray = createPremultipliedImageResult();
-    if (!dstPixelArray)
-        return;
-
-    IntRect effectADrawingRect = requestedRegionOfInputImageData(in->absolutePaintRect());
-    RefPtr<Uint8ClampedArray> srcPixelArrayA = in->asPremultipliedImage(effectADrawingRect);
-
-    IntRect effectBDrawingRect = requestedRegionOfInputImageData(in2->absolutePaintRect());
-    RefPtr<Uint8ClampedArray> srcPixelArrayB = in2->asPremultipliedImage(effectBDrawingRect);
-
-    unsigned pixelArrayLength = srcPixelArrayA->length();
-    ASSERT(pixelArrayLength == srcPixelArrayB->length());
-
-#if HAVE(ARM_NEON_INTRINSICS)
-    if (pixelArrayLength >= 8)
-        platformApplyNEON(srcPixelArrayA->data(), srcPixelArrayB->data(), dstPixelArray->data(), pixelArrayLength);
-    else { // If there is just one pixel we expand it to two.
-        ASSERT(pixelArrayLength > 0);
-        uint32_t sourceA[2] = {0, 0};
-        uint32_t sourceBAndDest[2] = {0, 0};
-
-        sourceA[0] = reinterpret_cast<uint32_t*>(srcPixelArrayA->data())[0];
-        sourceBAndDest[0] = reinterpret_cast<uint32_t*>(srcPixelArrayB->data())[0];
-        platformApplyNEON(reinterpret_cast<uint8_t*>(sourceA), reinterpret_cast<uint8_t*>(sourceBAndDest), reinterpret_cast<uint8_t*>(sourceBAndDest), 8);
-        reinterpret_cast<uint32_t*>(dstPixelArray->data())[0] = sourceBAndDest[0];
-    }
-#else
-    platformApplyGeneric(srcPixelArrayA->data(), srcPixelArrayB->data(), dstPixelArray->data(), pixelArrayLength);
-#endif
-}
-
-static SkXfermode::Mode toSkiaMode(BlendModeType mode)
-{
-    switch (mode) {
-    case FEBLEND_MODE_NORMAL:
-        return SkXfermode::kSrcOver_Mode;
-    case FEBLEND_MODE_MULTIPLY:
-        return SkXfermode::kMultiply_Mode;
-    case FEBLEND_MODE_SCREEN:
-        return SkXfermode::kScreen_Mode;
-    case FEBLEND_MODE_DARKEN:
-        return SkXfermode::kDarken_Mode;
-    case FEBLEND_MODE_LIGHTEN:
-        return SkXfermode::kLighten_Mode;
-    default:
-        return SkXfermode::kSrcOver_Mode;
-    }
-}
-
-bool FEBlend::applySkia()
-{
-    // For now, only use the skia implementation for accelerated rendering.
-    if (filter()->renderingMode() != Accelerated)
-        return false;
-
-    FilterEffect* in = inputEffect(0);
-    FilterEffect* in2 = inputEffect(1);
-
-    if (!in || !in2)
-        return false;
-
-    ImageBuffer* resultImage = createImageBufferResult();
-    if (!resultImage)
-        return false;
-
-    RefPtr<Image> foreground = in->asImageBuffer()->copyImage(DontCopyBackingStore);
-    RefPtr<Image> background = in2->asImageBuffer()->copyImage(DontCopyBackingStore);
-
-    RefPtr<NativeImageSkia> foregroundNativeImage = foreground->nativeImageForCurrentFrame();
-    RefPtr<NativeImageSkia> backgroundNativeImage = background->nativeImageForCurrentFrame();
-
-    if (!foregroundNativeImage || !backgroundNativeImage)
-        return false;
-
-    SkBitmap foregroundBitmap = foregroundNativeImage->bitmap();
-    SkBitmap backgroundBitmap = backgroundNativeImage->bitmap();
-
-    SkAutoTUnref<SkImageFilter> backgroundSource(new SkBitmapSource(backgroundBitmap));
-    SkAutoTUnref<SkXfermode> mode(SkXfermode::Create(toSkiaMode(m_mode)));
-    SkAutoTUnref<SkImageFilter> blend(new SkXfermodeImageFilter(mode, backgroundSource));
-    SkPaint paint;
-    paint.setImageFilter(blend);
-    resultImage->context()->drawBitmap(foregroundBitmap, 0, 0, &paint);
-    return true;
-}
-
-PassRefPtr<SkImageFilter> FEBlend::createImageFilter(SkiaImageFilterBuilder* builder)
-{
-    RefPtr<SkImageFilter> foreground(builder->build(inputEffect(0), operatingColorSpace()));
-    RefPtr<SkImageFilter> background(builder->build(inputEffect(1), operatingColorSpace()));
-    SkAutoTUnref<SkXfermode> mode(SkXfermode::Create(toSkiaMode(m_mode)));
-    SkImageFilter::CropRect cropRect = getCropRect(builder->cropOffset());
-    return adoptRef(new SkXfermodeImageFilter(mode, background.get(), foreground.get(), &cropRect));
-}
-
-static TextStream& operator<<(TextStream& ts, const BlendModeType& type)
-{
-    switch (type) {
-    case FEBLEND_MODE_UNKNOWN:
-        ts << "UNKNOWN";
-        break;
-    case FEBLEND_MODE_NORMAL:
-        ts << "NORMAL";
-        break;
-    case FEBLEND_MODE_MULTIPLY:
-        ts << "MULTIPLY";
-        break;
-    case FEBLEND_MODE_SCREEN:
-        ts << "SCREEN";
-        break;
-    case FEBLEND_MODE_DARKEN:
-        ts << "DARKEN";
-        break;
-    case FEBLEND_MODE_LIGHTEN:
-        ts << "LIGHTEN";
-        break;
-    }
-    return ts;
-}
-
-TextStream& FEBlend::externalRepresentation(TextStream& ts, int indent) const
-{
-    writeIndent(ts, indent);
-    ts << "[feBlend";
-    FilterEffect::externalRepresentation(ts);
-    ts << " mode=\"" << m_mode << "\"]\n";
-    inputEffect(0)->externalRepresentation(ts, indent + 1);
-    inputEffect(1)->externalRepresentation(ts, indent + 1);
-    return ts;
-}
-
-} // namespace WebCore