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/*
* Copyright (C) 2006 Apple Computer, Inc. All rights reserved.
* Copyright (C) 2008, 2009 Google, 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.
*/
#include "config.h"
#include "platform/image-decoders/ImageDecoder.h"
namespace WebCore {
ImageFrame::ImageFrame()
: m_bitmap(NativeImageSkia::create())
, m_allocator(0)
, m_hasAlpha(false)
, m_status(FrameEmpty)
, m_duration(0)
, m_disposalMethod(DisposeNotSpecified)
, m_alphaBlendSource(BlendAtopPreviousFrame)
, m_premultiplyAlpha(true)
, m_pixelsChanged(false)
, m_requiredPreviousFrameIndex(kNotFound)
#if !ASSERT_DISABLED
, m_requiredPreviousFrameIndexValid(false)
#endif
{
}
ImageFrame& ImageFrame::operator=(const ImageFrame& other)
{
if (this == &other)
return *this;
m_bitmap = other.m_bitmap->clone();
// Keep the pixels locked since we will be writing directly into the
// bitmap throughout this object's lifetime.
m_bitmap->bitmap().lockPixels();
// Be sure to assign this before calling setStatus(), since setStatus() may
// call notifyBitmapIfPixelsChanged().
m_pixelsChanged = other.m_pixelsChanged;
setMemoryAllocator(other.allocator());
setOriginalFrameRect(other.originalFrameRect());
setStatus(other.status());
setDuration(other.duration());
setDisposalMethod(other.disposalMethod());
setAlphaBlendSource(other.alphaBlendSource());
setPremultiplyAlpha(other.premultiplyAlpha());
// Be sure that this is called after we've called setStatus(), since we
// look at our status to know what to do with the alpha value.
setHasAlpha(other.hasAlpha());
// Copy raw fields to avoid ASSERT failure in requiredPreviousFrameIndex().
m_requiredPreviousFrameIndex = other.m_requiredPreviousFrameIndex;
#if !ASSERT_DISABLED
m_requiredPreviousFrameIndexValid = other.m_requiredPreviousFrameIndexValid;
#endif
return *this;
}
void ImageFrame::clearPixelData()
{
m_bitmap->bitmap().reset();
m_status = FrameEmpty;
// NOTE: Do not reset other members here; clearFrameBufferCache()
// calls this to free the bitmap data, but other functions like
// initFrameBuffer() and frameComplete() may still need to read
// other metadata out of this frame later.
}
void ImageFrame::zeroFillPixelData()
{
m_bitmap->bitmap().eraseARGB(0, 0, 0, 0);
m_hasAlpha = true;
}
bool ImageFrame::copyBitmapData(const ImageFrame& other)
{
if (this == &other)
return true;
m_hasAlpha = other.m_hasAlpha;
m_bitmap->bitmap().reset();
const NativeImageSkia* otherBitmap = other.m_bitmap.get();
return otherBitmap->bitmap().copyTo(&m_bitmap->bitmap(), otherBitmap->bitmap().config());
}
bool ImageFrame::setSize(int newWidth, int newHeight)
{
// setSize() should only be called once, it leaks memory otherwise.
ASSERT(!width() && !height());
m_bitmap->bitmap().setConfig(SkBitmap::kARGB_8888_Config, newWidth, newHeight);
if (!m_bitmap->bitmap().allocPixels(m_allocator, 0))
return false;
zeroFillPixelData();
return true;
}
PassRefPtr<NativeImageSkia> ImageFrame::asNewNativeImage() const
{
return m_bitmap->clone();
}
bool ImageFrame::hasAlpha() const
{
return m_hasAlpha;
}
void ImageFrame::setHasAlpha(bool alpha)
{
m_hasAlpha = alpha;
// If the frame is not fully loaded, there will be transparent pixels,
// so we can't tell skia we're opaque, even for image types that logically
// always are (e.g. jpeg).
if (m_status != FrameComplete)
alpha = true;
m_bitmap->bitmap().setAlphaType(alpha ? kPremul_SkAlphaType : kOpaque_SkAlphaType);
}
void ImageFrame::setStatus(Status status)
{
m_status = status;
if (m_status == FrameComplete) {
m_bitmap->bitmap().setAlphaType(m_hasAlpha ? kPremul_SkAlphaType : kOpaque_SkAlphaType);
// Send pending pixels changed notifications now, because we can't do this after
// the bitmap was set immutable by setDataComplete().
notifyBitmapIfPixelsChanged();
m_bitmap->setDataComplete(); // Tell the bitmap it's done.
}
}
void ImageFrame::zeroFillFrameRect(const IntRect& rect)
{
if (rect.isEmpty())
return;
m_bitmap->bitmap().eraseArea(rect, SkColorSetARGB(0, 0, 0, 0));
setHasAlpha(true);
}
} // namespace WebCore
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