1 /* 2 * Copyright (C) 2010 Apple Inc. All rights reserved. 3 * Copyright (C) 2010 Google Inc. All rights reserved. 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 APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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 #include "config.h" 28 29 #if ENABLE(WEBGL) 30 31 #include "GraphicsContext3D.h" 32 33 #include "BitmapImage.h" 34 #include "Image.h" 35 #include "ImageSource.h" 36 #include "NativeImageSkia.h" 37 #include <wtf/OwnPtr.h> 38 #include <wtf/PassOwnPtr.h> 39 40 #include <algorithm> 41 42 namespace WebCore { 43 44 bool GraphicsContext3D::getImageData(Image* image, 45 GC3Denum format, 46 GC3Denum type, 47 bool premultiplyAlpha, 48 bool ignoreGammaAndColorProfile, 49 Vector<uint8_t>& outputVector) 50 { 51 if (!image) 52 return false; 53 OwnPtr<NativeImageSkia> pixels; 54 NativeImageSkia* skiaImage = image->nativeImageForCurrentFrame(); 55 AlphaOp neededAlphaOp = AlphaDoNothing; 56 bool hasAlpha = skiaImage ? !skiaImage->isOpaque() : true; 57 if ((!skiaImage || ignoreGammaAndColorProfile || (hasAlpha && !premultiplyAlpha)) && image->data()) { 58 ImageSource decoder(ImageSource::AlphaNotPremultiplied, 59 ignoreGammaAndColorProfile ? ImageSource::GammaAndColorProfileIgnored : ImageSource::GammaAndColorProfileApplied); 60 // Attempt to get raw unpremultiplied image data 61 decoder.setData(image->data(), true); 62 if (!decoder.frameCount() || !decoder.frameIsCompleteAtIndex(0)) 63 return false; 64 hasAlpha = decoder.frameHasAlphaAtIndex(0); 65 pixels = adoptPtr(decoder.createFrameAtIndex(0)); 66 if (!pixels.get() || !pixels->isDataComplete() || !pixels->width() || !pixels->height()) 67 return false; 68 SkBitmap::Config skiaConfig = pixels->config(); 69 if (skiaConfig != SkBitmap::kARGB_8888_Config) 70 return false; 71 skiaImage = pixels.get(); 72 if (hasAlpha && premultiplyAlpha) 73 neededAlphaOp = AlphaDoPremultiply; 74 } else if (!premultiplyAlpha && hasAlpha) 75 neededAlphaOp = AlphaDoUnmultiply; 76 if (!skiaImage) 77 return false; 78 SkBitmap& skiaImageRef = *skiaImage; 79 SkAutoLockPixels lock(skiaImageRef); 80 ASSERT(skiaImage->rowBytes() == skiaImage->width() * 4); 81 outputVector.resize(skiaImage->rowBytes() * skiaImage->height()); 82 return packPixels(reinterpret_cast<const uint8_t*>(skiaImage->getPixels()), 83 SourceFormatBGRA8, skiaImage->width(), skiaImage->height(), 0, 84 format, type, neededAlphaOp, outputVector.data()); 85 } 86 87 } // namespace WebCore 88 89 #endif // ENABLE(WEBGL) 90
