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Diffstat (limited to 'WebCore/platform/graphics/qt/ImageDecoderQt.cpp')
| -rw-r--r-- | WebCore/platform/graphics/qt/ImageDecoderQt.cpp | 258 |
1 files changed, 0 insertions, 258 deletions
diff --git a/WebCore/platform/graphics/qt/ImageDecoderQt.cpp b/WebCore/platform/graphics/qt/ImageDecoderQt.cpp deleted file mode 100644 index 2bbb9ce..0000000 --- a/WebCore/platform/graphics/qt/ImageDecoderQt.cpp +++ /dev/null @@ -1,258 +0,0 @@ -/* - * Copyright (C) 2006 Friedemann Kleint <fkleint@trolltech.com> - * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies) - * - * 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. - */ - -#include "config.h" -#include "ImageDecoderQt.h" - -#include <QtCore/QByteArray> -#include <QtCore/QBuffer> - -#include <QtGui/QImageReader> -#include <qdebug.h> - -namespace WebCore { - -ImageDecoder* ImageDecoder::create(const SharedBuffer& data, ImageSource::AlphaOption alphaOption, ImageSource::GammaAndColorProfileOption gammaAndColorProfileOption) -{ - // We need at least 4 bytes to figure out what kind of image we're dealing with. - if (data.size() < 4) - return 0; - - return new ImageDecoderQt(alphaOption, gammaAndColorProfileOption); -} - -ImageDecoderQt::ImageDecoderQt(ImageSource::AlphaOption alphaOption, ImageSource::GammaAndColorProfileOption gammaAndColorProfileOption) - : ImageDecoder(alphaOption, gammaAndColorProfileOption) - , m_repetitionCount(cAnimationNone) -{ -} - -ImageDecoderQt::~ImageDecoderQt() -{ -} - -void ImageDecoderQt::setData(SharedBuffer* data, bool allDataReceived) -{ - if (failed()) - return; - - // No progressive loading possible - if (!allDataReceived) - return; - - // Cache our own new data. - ImageDecoder::setData(data, allDataReceived); - - // We expect to be only called once with allDataReceived - ASSERT(!m_buffer); - ASSERT(!m_reader); - - // Attempt to load the data - QByteArray imageData = QByteArray::fromRawData(m_data->data(), m_data->size()); - m_buffer.set(new QBuffer); - m_buffer->setData(imageData); - m_buffer->open(QIODevice::ReadOnly | QIODevice::Unbuffered); - m_reader.set(new QImageReader(m_buffer.get(), m_format)); - - // This will force the JPEG decoder to use JDCT_IFAST - m_reader->setQuality(49); - - // QImageReader only allows retrieving the format before reading the image - m_format = m_reader->format(); -} - -bool ImageDecoderQt::isSizeAvailable() -{ - if (!ImageDecoder::isSizeAvailable() && m_reader) - internalDecodeSize(); - - return ImageDecoder::isSizeAvailable(); -} - -size_t ImageDecoderQt::frameCount() -{ - if (m_frameBufferCache.isEmpty() && m_reader) { - if (m_reader->supportsAnimation()) { - int imageCount = m_reader->imageCount(); - - // Fixup for Qt decoders... imageCount() is wrong - // and jumpToNextImage does not work either... so - // we will have to parse everything... - if (!imageCount) - forceLoadEverything(); - else { - m_frameBufferCache.resize(imageCount); - for (size_t i = 0; i < m_frameBufferCache.size(); ++i) - m_frameBufferCache[i].setPremultiplyAlpha(m_premultiplyAlpha); - } - } else { - m_frameBufferCache.resize(1); - m_frameBufferCache[0].setPremultiplyAlpha(m_premultiplyAlpha); - } - } - - return m_frameBufferCache.size(); -} - -int ImageDecoderQt::repetitionCount() const -{ - if (m_reader && m_reader->supportsAnimation()) - m_repetitionCount = m_reader->loopCount(); - return m_repetitionCount; -} - -String ImageDecoderQt::filenameExtension() const -{ - return String(m_format.constData(), m_format.length()); -}; - -RGBA32Buffer* ImageDecoderQt::frameBufferAtIndex(size_t index) -{ - // In case the ImageDecoderQt got recreated we don't know - // yet how many images we are going to have and need to - // find that out now. - size_t count = m_frameBufferCache.size(); - if (!failed() && !count) { - internalDecodeSize(); - count = frameCount(); - } - - if (index >= count) - return 0; - - RGBA32Buffer& frame = m_frameBufferCache[index]; - if (frame.status() != RGBA32Buffer::FrameComplete && m_reader) - internalReadImage(index); - return &frame; -} - -void ImageDecoderQt::clearFrameBufferCache(size_t /*index*/) -{ -} - -void ImageDecoderQt::internalDecodeSize() -{ - ASSERT(m_reader); - - // If we have a QSize() something failed - QSize size = m_reader->size(); - if (size.isEmpty()) { - setFailed(); - return clearPointers(); - } - - setSize(size.width(), size.height()); -} - -void ImageDecoderQt::internalReadImage(size_t frameIndex) -{ - ASSERT(m_reader); - - if (m_reader->supportsAnimation()) - m_reader->jumpToImage(frameIndex); - else if (frameIndex) { - setFailed(); - return clearPointers(); - } - - if (!internalHandleCurrentImage(frameIndex)) - setFailed(); - - // Attempt to return some memory - for (int i = 0; i < m_frameBufferCache.size(); ++i) { - if (m_frameBufferCache[i].status() != RGBA32Buffer::FrameComplete) - return; - } - - clearPointers(); -} - -bool ImageDecoderQt::internalHandleCurrentImage(size_t frameIndex) -{ - QPixmap pixmap; - -#if QT_VERSION >= QT_VERSION_CHECK(4, 7, 0) - pixmap = QPixmap::fromImageReader(m_reader.get()); -#else - QImage img; - if (m_reader->read(&img)) - pixmap = QPixmap::fromImage(img); -#endif - - if (pixmap.isNull()) { - frameCount(); - repetitionCount(); - clearPointers(); - return false; - } - - // now into the RGBA32Buffer - even if the image is not - RGBA32Buffer* const buffer = &m_frameBufferCache[frameIndex]; - buffer->setRect(m_reader->currentImageRect()); - buffer->setStatus(RGBA32Buffer::FrameComplete); - buffer->setDuration(m_reader->nextImageDelay()); - buffer->setPixmap(pixmap); - return true; -} - -// The QImageIOHandler is not able to tell us how many frames -// we have and we need to parse every image. We do this by -// increasing the m_frameBufferCache by one and try to parse -// the image. We stop when QImage::read fails and then need -// to resize the m_frameBufferCache to the final size and update -// the failed bit. If we failed to decode the first image -// then we truly failed to decode, otherwise we're OK. - -// TODO: Do not increment the m_frameBufferCache.size() by one but more than one -void ImageDecoderQt::forceLoadEverything() -{ - int imageCount = 0; - - do { - m_frameBufferCache.resize(++imageCount); - } while (internalHandleCurrentImage(imageCount - 1)); - - // If we failed decoding the first image we actually - // have no images and need to set the failed bit. - // Otherwise, we want to forget about - // the last attempt to decode a image. - m_frameBufferCache.resize(imageCount - 1); - for (size_t i = 0; i < m_frameBufferCache.size(); ++i) - m_frameBufferCache[i].setPremultiplyAlpha(m_premultiplyAlpha); - if (imageCount == 1) - setFailed(); -} - -void ImageDecoderQt::clearPointers() -{ - m_reader.clear(); - m_buffer.clear(); -} -} - -// vim: ts=4 sw=4 et |