| /* |
| * 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> |
| * |
| * 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 "FEColorMatrix.h" |
| |
| #include "Filter.h" |
| #include "GraphicsContext.h" |
| #include "PixelBuffer.h" |
| #include <wtf/MathExtras.h> |
| #include <wtf/text/TextStream.h> |
| |
| #if USE(ACCELERATE) |
| #include <Accelerate/Accelerate.h> |
| #endif |
| |
| namespace WebCore { |
| |
| FEColorMatrix::FEColorMatrix(Filter& filter, ColorMatrixType type, Vector<float>&& values) |
| : FilterEffect(filter, Type::ColorMatrix) |
| , m_type(type) |
| , m_values(WTFMove(values)) |
| { |
| } |
| |
| Ref<FEColorMatrix> FEColorMatrix::create(Filter& filter, ColorMatrixType type, Vector<float>&& values) |
| { |
| return adoptRef(*new FEColorMatrix(filter, type, WTFMove(values))); |
| } |
| |
| bool FEColorMatrix::setType(ColorMatrixType type) |
| { |
| if (m_type == type) |
| return false; |
| m_type = type; |
| return true; |
| } |
| |
| bool FEColorMatrix::setValues(const Vector<float> &values) |
| { |
| if (m_values == values) |
| return false; |
| m_values = values; |
| return true; |
| } |
| |
| inline void matrix(float& red, float& green, float& blue, float& alpha, const Vector<float>& values) |
| { |
| float r = red; |
| float g = green; |
| float b = blue; |
| float a = alpha; |
| |
| red = values[ 0] * r + values[ 1] * g + values[ 2] * b + values[ 3] * a + values[ 4] * 255; |
| green = values[ 5] * r + values[ 6] * g + values [7] * b + values[ 8] * a + values[ 9] * 255; |
| blue = values[10] * r + values[11] * g + values[12] * b + values[13] * a + values[14] * 255; |
| alpha = values[15] * r + values[16] * g + values[17] * b + values[18] * a + values[19] * 255; |
| } |
| |
| inline void saturateAndHueRotate(float& red, float& green, float& blue, const float* components) |
| { |
| float r = red; |
| float g = green; |
| float b = blue; |
| |
| red = r * components[0] + g * components[1] + b * components[2]; |
| green = r * components[3] + g * components[4] + b * components[5]; |
| blue = r * components[6] + g * components[7] + b * components[8]; |
| } |
| |
| // FIXME: this should use the luminance(...) function in ColorLuminance.h. |
| inline void luminance(float& red, float& green, float& blue, float& alpha) |
| { |
| alpha = 0.2125 * red + 0.7154 * green + 0.0721 * blue; |
| red = 0; |
| green = 0; |
| blue = 0; |
| } |
| |
| #if USE(ACCELERATE) |
| template<ColorMatrixType filterType> |
| bool effectApplyAccelerated(Uint8ClampedArray& pixelArray, const Vector<float>& values, float components[9], IntSize bufferSize) |
| { |
| ASSERT(pixelArray.length() == bufferSize.area() * 4); |
| |
| if (filterType == FECOLORMATRIX_TYPE_MATRIX) { |
| // vImageMatrixMultiply_ARGB8888 takes a 4x4 matrix, if any value in the last column of the FEColorMatrix 5x4 matrix |
| // is not zero, fall back to non-vImage code. |
| if (values[4] != 0 || values[9] != 0 || values[14] != 0 || values[19] != 0) |
| return false; |
| } |
| |
| const int32_t divisor = 256; |
| uint8_t* data = pixelArray.data(); |
| |
| vImage_Buffer src; |
| src.width = bufferSize.width(); |
| src.height = bufferSize.height(); |
| src.rowBytes = bufferSize.width() * 4; |
| src.data = data; |
| |
| vImage_Buffer dest; |
| dest.width = bufferSize.width(); |
| dest.height = bufferSize.height(); |
| dest.rowBytes = bufferSize.width() * 4; |
| dest.data = data; |
| |
| switch (filterType) { |
| case FECOLORMATRIX_TYPE_MATRIX: { |
| const int16_t matrix[4 * 4] = { |
| static_cast<int16_t>(roundf(values[ 0] * divisor)), |
| static_cast<int16_t>(roundf(values[ 5] * divisor)), |
| static_cast<int16_t>(roundf(values[10] * divisor)), |
| static_cast<int16_t>(roundf(values[15] * divisor)), |
| |
| static_cast<int16_t>(roundf(values[ 1] * divisor)), |
| static_cast<int16_t>(roundf(values[ 6] * divisor)), |
| static_cast<int16_t>(roundf(values[11] * divisor)), |
| static_cast<int16_t>(roundf(values[16] * divisor)), |
| |
| static_cast<int16_t>(roundf(values[ 2] * divisor)), |
| static_cast<int16_t>(roundf(values[ 7] * divisor)), |
| static_cast<int16_t>(roundf(values[12] * divisor)), |
| static_cast<int16_t>(roundf(values[17] * divisor)), |
| |
| static_cast<int16_t>(roundf(values[ 3] * divisor)), |
| static_cast<int16_t>(roundf(values[ 8] * divisor)), |
| static_cast<int16_t>(roundf(values[13] * divisor)), |
| static_cast<int16_t>(roundf(values[18] * divisor)), |
| }; |
| vImageMatrixMultiply_ARGB8888(&src, &dest, matrix, divisor, nullptr, nullptr, kvImageNoFlags); |
| break; |
| } |
| |
| case FECOLORMATRIX_TYPE_SATURATE: |
| case FECOLORMATRIX_TYPE_HUEROTATE: { |
| const int16_t matrix[4 * 4] = { |
| static_cast<int16_t>(roundf(components[0] * divisor)), |
| static_cast<int16_t>(roundf(components[3] * divisor)), |
| static_cast<int16_t>(roundf(components[6] * divisor)), |
| 0, |
| |
| static_cast<int16_t>(roundf(components[1] * divisor)), |
| static_cast<int16_t>(roundf(components[4] * divisor)), |
| static_cast<int16_t>(roundf(components[7] * divisor)), |
| 0, |
| |
| static_cast<int16_t>(roundf(components[2] * divisor)), |
| static_cast<int16_t>(roundf(components[5] * divisor)), |
| static_cast<int16_t>(roundf(components[8] * divisor)), |
| 0, |
| |
| 0, |
| 0, |
| 0, |
| divisor, |
| }; |
| vImageMatrixMultiply_ARGB8888(&src, &dest, matrix, divisor, nullptr, nullptr, kvImageNoFlags); |
| break; |
| } |
| case FECOLORMATRIX_TYPE_LUMINANCETOALPHA: { |
| const int16_t matrix[4 * 4] = { |
| 0, |
| 0, |
| 0, |
| static_cast<int16_t>(roundf(0.2125 * divisor)), |
| |
| 0, |
| 0, |
| 0, |
| static_cast<int16_t>(roundf(0.7154 * divisor)), |
| |
| 0, |
| 0, |
| 0, |
| static_cast<int16_t>(roundf(0.0721 * divisor)), |
| |
| 0, |
| 0, |
| 0, |
| 0, |
| }; |
| vImageMatrixMultiply_ARGB8888(&src, &dest, matrix, divisor, nullptr, nullptr, kvImageNoFlags); |
| break; |
| } |
| } |
| |
| return true; |
| } |
| #endif |
| |
| template<ColorMatrixType filterType> |
| void effectType(Uint8ClampedArray& pixelArray, const Vector<float>& values, IntSize bufferSize) |
| { |
| float components[9]; |
| |
| if (filterType == FECOLORMATRIX_TYPE_SATURATE) |
| FEColorMatrix::calculateSaturateComponents(components, values[0]); |
| else if (filterType == FECOLORMATRIX_TYPE_HUEROTATE) |
| FEColorMatrix::calculateHueRotateComponents(components, values[0]); |
| |
| unsigned pixelArrayLength = pixelArray.length(); |
| |
| #if USE(ACCELERATE) |
| if (effectApplyAccelerated<filterType>(pixelArray, values, components, bufferSize)) |
| return; |
| #else |
| UNUSED_PARAM(bufferSize); |
| #endif |
| |
| switch (filterType) { |
| case FECOLORMATRIX_TYPE_MATRIX: |
| for (unsigned pixelByteOffset = 0; pixelByteOffset < pixelArrayLength; pixelByteOffset += 4) { |
| float red = pixelArray.item(pixelByteOffset); |
| float green = pixelArray.item(pixelByteOffset + 1); |
| float blue = pixelArray.item(pixelByteOffset + 2); |
| float alpha = pixelArray.item(pixelByteOffset + 3); |
| matrix(red, green, blue, alpha, values); |
| pixelArray.set(pixelByteOffset, red); |
| pixelArray.set(pixelByteOffset + 1, green); |
| pixelArray.set(pixelByteOffset + 2, blue); |
| pixelArray.set(pixelByteOffset + 3, alpha); |
| } |
| break; |
| |
| case FECOLORMATRIX_TYPE_SATURATE: |
| case FECOLORMATRIX_TYPE_HUEROTATE: |
| for (unsigned pixelByteOffset = 0; pixelByteOffset < pixelArrayLength; pixelByteOffset += 4) { |
| float red = pixelArray.item(pixelByteOffset); |
| float green = pixelArray.item(pixelByteOffset + 1); |
| float blue = pixelArray.item(pixelByteOffset + 2); |
| float alpha = pixelArray.item(pixelByteOffset + 3); |
| saturateAndHueRotate(red, green, blue, components); |
| pixelArray.set(pixelByteOffset, red); |
| pixelArray.set(pixelByteOffset + 1, green); |
| pixelArray.set(pixelByteOffset + 2, blue); |
| pixelArray.set(pixelByteOffset + 3, alpha); |
| } |
| break; |
| |
| case FECOLORMATRIX_TYPE_LUMINANCETOALPHA: |
| for (unsigned pixelByteOffset = 0; pixelByteOffset < pixelArrayLength; pixelByteOffset += 4) { |
| float red = pixelArray.item(pixelByteOffset); |
| float green = pixelArray.item(pixelByteOffset + 1); |
| float blue = pixelArray.item(pixelByteOffset + 2); |
| float alpha = pixelArray.item(pixelByteOffset + 3); |
| luminance(red, green, blue, alpha); |
| pixelArray.set(pixelByteOffset, red); |
| pixelArray.set(pixelByteOffset + 1, green); |
| pixelArray.set(pixelByteOffset + 2, blue); |
| pixelArray.set(pixelByteOffset + 3, alpha); |
| } |
| break; |
| } |
| } |
| |
| void FEColorMatrix::platformApplySoftware() |
| { |
| FilterEffect* in = inputEffect(0); |
| |
| ImageBuffer* resultImage = createImageBufferResult(); |
| if (!resultImage) |
| return; |
| |
| ImageBuffer* inBuffer = in->imageBufferResult(); |
| if (inBuffer) |
| resultImage->context().drawImageBuffer(*inBuffer, drawingRegionOfInputImage(in->absolutePaintRect())); |
| |
| PixelBufferFormat format { AlphaPremultiplication::Unpremultiplied, PixelFormat::RGBA8, resultColorSpace() }; |
| IntRect imageRect(IntPoint(), resultImage->logicalSize()); |
| auto pixelBuffer = resultImage->getPixelBuffer(format, imageRect); |
| if (!pixelBuffer) |
| return; |
| |
| auto& pixelArray = pixelBuffer->data(); |
| auto pixelArrayDimensions = pixelBuffer->size(); |
| |
| Vector<float> values = normalizedFloats(m_values); |
| |
| switch (m_type) { |
| case FECOLORMATRIX_TYPE_UNKNOWN: |
| break; |
| case FECOLORMATRIX_TYPE_MATRIX: |
| effectType<FECOLORMATRIX_TYPE_MATRIX>(pixelArray, values, pixelArrayDimensions); |
| break; |
| case FECOLORMATRIX_TYPE_SATURATE: |
| effectType<FECOLORMATRIX_TYPE_SATURATE>(pixelArray, values, pixelArrayDimensions); |
| break; |
| case FECOLORMATRIX_TYPE_HUEROTATE: |
| effectType<FECOLORMATRIX_TYPE_HUEROTATE>(pixelArray, values, pixelArrayDimensions); |
| break; |
| case FECOLORMATRIX_TYPE_LUMINANCETOALPHA: |
| effectType<FECOLORMATRIX_TYPE_LUMINANCETOALPHA>(pixelArray, values, pixelArrayDimensions); |
| setIsAlphaImage(true); |
| break; |
| } |
| |
| resultImage->putPixelBuffer(*pixelBuffer, imageRect); |
| } |
| |
| static TextStream& operator<<(TextStream& ts, const ColorMatrixType& type) |
| { |
| switch (type) { |
| case FECOLORMATRIX_TYPE_UNKNOWN: |
| ts << "UNKNOWN"; |
| break; |
| case FECOLORMATRIX_TYPE_MATRIX: |
| ts << "MATRIX"; |
| break; |
| case FECOLORMATRIX_TYPE_SATURATE: |
| ts << "SATURATE"; |
| break; |
| case FECOLORMATRIX_TYPE_HUEROTATE: |
| ts << "HUEROTATE"; |
| break; |
| case FECOLORMATRIX_TYPE_LUMINANCETOALPHA: |
| ts << "LUMINANCETOALPHA"; |
| break; |
| } |
| return ts; |
| } |
| |
| TextStream& FEColorMatrix::externalRepresentation(TextStream& ts, RepresentationType representation) const |
| { |
| ts << indent << "[feColorMatrix"; |
| FilterEffect::externalRepresentation(ts, representation); |
| ts << " type=\"" << m_type << "\""; |
| if (!m_values.isEmpty()) { |
| ts << " values=\""; |
| Vector<float>::const_iterator ptr = m_values.begin(); |
| const Vector<float>::const_iterator end = m_values.end(); |
| while (ptr < end) { |
| ts << *ptr; |
| ++ptr; |
| if (ptr < end) |
| ts << " "; |
| } |
| ts << "\""; |
| } |
| ts << "]\n"; |
| |
| TextStream::IndentScope indentScope(ts); |
| inputEffect(0)->externalRepresentation(ts, representation); |
| return ts; |
| } |
| |
| } // namespace WebCore |