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Diffstat (limited to 'WebCore/platform/graphics/skia/NativeImageSkia.cpp')
| -rw-r--r-- | WebCore/platform/graphics/skia/NativeImageSkia.cpp | 140 |
1 files changed, 0 insertions, 140 deletions
diff --git a/WebCore/platform/graphics/skia/NativeImageSkia.cpp b/WebCore/platform/graphics/skia/NativeImageSkia.cpp deleted file mode 100644 index 94f9b75..0000000 --- a/WebCore/platform/graphics/skia/NativeImageSkia.cpp +++ /dev/null @@ -1,140 +0,0 @@ -/* - * Copyright (c) 2008, Google 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: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * 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. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "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 THE COPYRIGHT - * OWNER 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" - -#if !PLATFORM(ANDROID) -#include "skia/ext/image_operations.h" -#endif - -#include "NativeImageSkia.h" -#include "SharedGraphicsContext3D.h" -#include "SkiaUtils.h" - -namespace WebCore { - -NativeImageSkia::NativeImageSkia() - : m_isDataComplete(false), - m_lastRequestSize(0, 0), - m_resizeRequests(0) -{ -} - -NativeImageSkia::NativeImageSkia(const SkBitmap& other) - : SkBitmap(other), - m_isDataComplete(false), - m_lastRequestSize(0, 0), - m_resizeRequests(0) -{ -} - - -NativeImageSkia::~NativeImageSkia() -{ -#if PLATFORM(ANDROID) - // SharedGraphicsContext3D::removeTexturesFor() takes a NativeImagePtr. On - // Chromium, this is NativeImageSkia, which inherits from SkBitmap. On - // Android, NativeImagePtr is a SkBitmapRef, which is a wrapper around - // SkBitmap. Failing to call removeTexturesFor() probably causes a leak. - // TODO: Fix this. See http://b/3047425 -#else - SharedGraphicsContext3D::removeTexturesFor(this); -#endif -} - -int NativeImageSkia::decodedSize() const -{ - return getSize() + m_resizedImage.getSize(); -} - -bool NativeImageSkia::hasResizedBitmap(int w, int h) const -{ - if (m_lastRequestSize.width() == w && m_lastRequestSize.height() == h) - m_resizeRequests++; - else { - m_lastRequestSize = IntSize(w, h); - m_resizeRequests = 0; - } - - return m_resizedImage.width() == w && m_resizedImage.height() == h; -} - -// FIXME: don't cache when image is in-progress. - -SkBitmap NativeImageSkia::resizedBitmap(int w, int h) const -{ -#if !PLATFORM(ANDROID) - if (m_resizedImage.width() != w || m_resizedImage.height() != h) - m_resizedImage = skia::ImageOperations::Resize(*this, skia::ImageOperations::RESIZE_LANCZOS3, w, h); -#endif - - return m_resizedImage; -} - -bool NativeImageSkia::shouldCacheResampling(int destWidth, - int destHeight, - int destSubsetWidth, - int destSubsetHeight) const -{ - // We can not cache incomplete frames. This might be a good optimization in - // the future, were we know how much of the frame has been decoded, so when - // we incrementally draw more of the image, we only have to resample the - // parts that are changed. - if (!m_isDataComplete) - return false; - - // If the destination bitmap is small, we'll always allow caching, since - // there is not very much penalty for computing it and it may come in handy. - static const int kSmallBitmapSize = 4096; - if (destWidth * destHeight <= kSmallBitmapSize) - return true; - - // If "too many" requests have been made for this bitmap, we assume that - // many more will be made as well, and we'll go ahead and cache it. - static const int kManyRequestThreshold = 4; - if (m_lastRequestSize.width() == destWidth && - m_lastRequestSize.height() == destHeight) { - if (m_resizeRequests >= kManyRequestThreshold) - return true; - } else { - // When a different size is being requested, count this as a query - // (hasResizedBitmap) and reset the counter. - m_lastRequestSize = IntSize(destWidth, destHeight); - m_resizeRequests = 0; - } - - // Otherwise, use the heuristic that if more than 1/4 of the image is - // requested, it's worth caching. - int destSize = destWidth * destHeight; - int destSubsetSize = destSubsetWidth * destSubsetHeight; - return destSize / 4 < destSubsetSize; -} - -} // namespace WebCore |