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/*
* Copyright (C) 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.
*/
#include "config.h"
#include "ImageDecoder.h"
#include <cairo.h>
namespace WebCore {
RGBA32Buffer::RGBA32Buffer()
: m_hasAlpha(false)
, m_status(FrameEmpty)
, m_duration(0)
, m_disposalMethod(DisposeNotSpecified)
{
}
void RGBA32Buffer::clear()
{
m_bytes.clear();
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 RGBA32Buffer::zeroFill()
{
m_bytes.fill(0);
m_hasAlpha = true;
}
void RGBA32Buffer::copyBitmapData(const RGBA32Buffer& other)
{
if (this == &other)
return;
m_bytes = other.m_bytes;
m_size = other.m_size;
setHasAlpha(other.m_hasAlpha);
}
bool RGBA32Buffer::setSize(int newWidth, int newHeight)
{
// NOTE: This has no way to check for allocation failure if the
// requested size was too big...
m_bytes.resize(newWidth * newHeight);
m_size = IntSize(newWidth, newHeight);
// Zero the image.
zeroFill();
return true;
}
NativeImagePtr RGBA32Buffer::asNewNativeImage() const
{
return cairo_image_surface_create_for_data(
reinterpret_cast<unsigned char*>(const_cast<PixelData*>(
m_bytes.data())), CAIRO_FORMAT_ARGB32, width(), height(),
width() * sizeof(PixelData));
}
bool RGBA32Buffer::hasAlpha() const
{
return m_hasAlpha;
}
void RGBA32Buffer::setHasAlpha(bool alpha)
{
m_hasAlpha = alpha;
}
void RGBA32Buffer::setStatus(FrameStatus status)
{
m_status = status;
}
RGBA32Buffer& RGBA32Buffer::operator=(const RGBA32Buffer& other)
{
if (this == &other)
return *this;
copyBitmapData(other);
setRect(other.rect());
setStatus(other.status());
setDuration(other.duration());
setDisposalMethod(other.disposalMethod());
return *this;
}
int RGBA32Buffer::width() const {
return m_size.width();
}
int RGBA32Buffer::height() const {
return m_size.height();
}
} // namespace WebCore
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