| /* |
| * Copyright (C) 2006 Apple Computer, Inc. All rights reserved. |
| * Copyright (C) 2008-2009 Torch Mobile, Inc. |
| * |
| * 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 JPEGImageDecoder_h |
| #define JPEGImageDecoder_h |
| |
| #include "ImageDecoder.h" |
| |
| namespace WebCore { |
| |
| class JPEGImageReader; |
| |
| // This class decodes the JPEG image format. |
| class JPEGImageDecoder : public ImageDecoder { |
| public: |
| JPEGImageDecoder(); |
| ~JPEGImageDecoder(); |
| |
| virtual String filenameExtension() const { return "jpg"; } |
| |
| // Take the data and store it. |
| virtual void setData(SharedBuffer* data, bool allDataReceived); |
| |
| // Whether or not the size information has been decoded yet. |
| virtual bool isSizeAvailable(); |
| |
| virtual RGBA32Buffer* frameBufferAtIndex(size_t index); |
| |
| virtual bool supportsAlpha() const { return false; } |
| |
| void decode(bool sizeOnly = false); |
| |
| JPEGImageReader* reader() { return m_reader; } |
| |
| bool outputScanlines(); |
| void jpegComplete(); |
| |
| #if ENABLE(IMAGE_DECODER_DOWN_SAMPLING) |
| bool setSize(int width, int height) |
| { |
| if (!ImageDecoder::setSize(width, height)) |
| return false; |
| prepareScaleDataIfNecessary(); |
| return true; |
| } |
| #endif |
| |
| private: |
| JPEGImageReader* m_reader; |
| }; |
| |
| } // namespace WebCore |
| |
| #endif |