/* * Copyright (C) 2004, 2005, 2006 Apple Computer, Inc. All rights reserved. * * 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 APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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 IMAGE_SOURCE_H_ #define IMAGE_SOURCE_H_ #include <wtf/Noncopyable.h> #include <wtf/Vector.h> #include <CoreGraphics/ImageIO.h> namespace WebCore { class IntSize; #if __APPLE__ typedef CGImageSourceRef NativeImageSourcePtr; typedef CGImageRef NativeImagePtr; typedef CFDataRef NativeBytePtr; #else class ImageDecoder; typedef ImageDecoder* NativeImageSourcePtr; typedef const Vector<char>* NativeBytePtr; typedef cairo_surface_t* NativeImagePtr; #endif const int cAnimationLoopOnce = -1; const int cAnimationNone = -2; class ImageSource : Noncopyable { public: ImageSource(); ~ImageSource(); void clear(); bool initialized() const; void setData(NativeBytePtr, bool allDataReceived); bool isSizeAvailable(); IntSize size() const; int repetitionCount(); size_t frameCount() const; NativeImagePtr createFrameAtIndex(size_t, float scaleHint, float* actualScaleOut, ssize_t* bytesOut); float frameDurationAtIndex(size_t); bool frameHasAlphaAtIndex(size_t); // Whether or not the frame actually used any alpha. bool frameIsCompleteAtIndex(size_t); // Whether or not the frame is completely decoded. private: NativeImageSourcePtr m_decoder; mutable bool m_isProgressive; mutable int m_baseSubsampling; CFDictionaryRef imageSourceOptions(int subsampling = 0) const; }; } #endif