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/*
* Copyright (C) 2006 Apple Computer, Inc. All rights reserved.
* Copyright (C) 2007 Alp Toker <alp.toker@collabora.co.uk>
* 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:
* 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 "platform/graphics/ImageSource.h"
#include "platform/graphics/DeferredImageDecoder.h"
#include "platform/image-decoders/ImageDecoder.h"
#include "third_party/skia/include/core/SkImage.h"
namespace blink {
ImageSource::ImageSource()
: m_decoderColorBehavior(ColorBehavior::transformToGlobalTarget()) {}
ImageSource::~ImageSource() {}
size_t ImageSource::clearCacheExceptFrame(size_t clearExceptFrame) {
return m_decoder ? m_decoder->clearCacheExceptFrame(clearExceptFrame) : 0;
}
PassRefPtr<SharedBuffer> ImageSource::data() {
return m_decoder ? m_decoder->data() : nullptr;
}
bool ImageSource::setData(PassRefPtr<SharedBuffer> passData,
bool allDataReceived) {
RefPtr<SharedBuffer> data = passData;
m_allDataReceived = allDataReceived;
if (m_decoder) {
m_decoder->setData(std::move(data), allDataReceived);
// If the decoder is pre-instantiated, it means we've already validated the
// data/signature at some point.
return true;
}
m_decoder = DeferredImageDecoder::create(data, allDataReceived,
ImageDecoder::AlphaPremultiplied,
m_decoderColorBehavior);
// Insufficient data is not a failure.
return m_decoder || !ImageDecoder::hasSufficientDataToSniffImageType(*data);
}
String ImageSource::filenameExtension() const {
return m_decoder ? m_decoder->filenameExtension() : String();
}
bool ImageSource::isSizeAvailable() {
return m_decoder && m_decoder->isSizeAvailable();
}
bool ImageSource::hasColorProfile() const {
return m_decoder && m_decoder->hasEmbeddedColorSpace();
}
IntSize ImageSource::size(
RespectImageOrientationEnum shouldRespectOrientation) const {
return frameSizeAtIndex(0, shouldRespectOrientation);
}
IntSize ImageSource::frameSizeAtIndex(
size_t index,
RespectImageOrientationEnum shouldRespectOrientation) const {
if (!m_decoder)
return IntSize();
IntSize size = m_decoder->frameSizeAtIndex(index);
if ((shouldRespectOrientation == RespectImageOrientation) &&
m_decoder->orientationAtIndex(index).usesWidthAsHeight())
return size.transposedSize();
return size;
}
bool ImageSource::getHotSpot(IntPoint& hotSpot) const {
return m_decoder ? m_decoder->hotSpot(hotSpot) : false;
}
int ImageSource::repetitionCount() {
return m_decoder ? m_decoder->repetitionCount() : cAnimationNone;
}
size_t ImageSource::frameCount() const {
return m_decoder ? m_decoder->frameCount() : 0;
}
sk_sp<SkImage> ImageSource::createFrameAtIndex(
size_t index,
const ColorBehavior& colorBehavior) {
if (!m_decoder)
return nullptr;
if (colorBehavior != m_decoderColorBehavior) {
m_decoder = DeferredImageDecoder::create(data(), m_allDataReceived,
ImageDecoder::AlphaPremultiplied,
colorBehavior);
m_decoderColorBehavior = colorBehavior;
// The data has already been validated, so changing the color behavior
// should always result in a valid decoder.
DCHECK(m_decoder);
}
return m_decoder->createFrameAtIndex(index);
}
float ImageSource::frameDurationAtIndex(size_t index) const {
if (!m_decoder)
return 0;
// Many annoying ads specify a 0 duration to make an image flash as quickly as
// possible. We follow Firefox's behavior and use a duration of 100 ms for any
// frames that specify a duration of <= 10 ms. See <rdar://problem/7689300>
// and <http://webkit.org/b/36082> for more information.
const float duration = m_decoder->frameDurationAtIndex(index) / 1000.0f;
if (duration < 0.011f)
return 0.100f;
return duration;
}
ImageOrientation ImageSource::orientationAtIndex(size_t index) const {
return m_decoder ? m_decoder->orientationAtIndex(index)
: DefaultImageOrientation;
}
bool ImageSource::frameHasAlphaAtIndex(size_t index) const {
return !m_decoder || m_decoder->frameHasAlphaAtIndex(index);
}
bool ImageSource::frameIsCompleteAtIndex(size_t index) const {
return m_decoder && m_decoder->frameIsCompleteAtIndex(index);
}
size_t ImageSource::frameBytesAtIndex(size_t index) const {
return m_decoder ? m_decoder->frameBytesAtIndex(index) : 0;
}
} // namespace blink
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