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87 lines
3.6 KiB
C++
87 lines
3.6 KiB
C++
/*
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* Copyright (C) 2012 Google Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "sky/engine/platform/graphics/DecodingImageGenerator.h"
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#include "sky/engine/platform/SharedBuffer.h"
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#include "sky/engine/platform/TraceEvent.h"
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#include "sky/engine/platform/graphics/ImageFrameGenerator.h"
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#include "third_party/skia/include/core/SkData.h"
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#include "third_party/skia/include/core/SkImageInfo.h"
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namespace blink {
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DecodingImageGenerator::DecodingImageGenerator(PassRefPtr<ImageFrameGenerator> frameGenerator, const SkImageInfo& info, size_t index)
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: SkImageGenerator(info)
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, m_frameGenerator(frameGenerator)
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, m_frameIndex(index)
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, m_generationId(0)
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{
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}
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DecodingImageGenerator::~DecodingImageGenerator()
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{
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}
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SkData* DecodingImageGenerator::onRefEncodedData()
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{
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// FIXME: If the image has been clipped or scaled, do not return the original
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// encoded data, since on playback it will not be known how the clipping/scaling
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// was done.
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RefPtr<SharedBuffer> buffer = nullptr;
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bool allDataReceived = false;
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m_frameGenerator->copyData(&buffer, &allDataReceived);
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if (buffer && allDataReceived)
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return SkData::NewWithCopy(buffer->data(), buffer->size());
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return 0;
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}
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bool DecodingImageGenerator::onGetPixels(const SkImageInfo& info, void* pixels, size_t rowBytes, SkPMColor ctable[], int* ctableCount)
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{
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TRACE_EVENT1("blink", "DecodingImageGenerator::getPixels", "index", static_cast<int>(m_frameIndex));
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// Implementation doesn't support scaling yet so make sure we're not given a different size.
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if (info.width() != info.width() || info.height() != info.height() || info.colorType() != info.colorType()) {
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// ImageFrame may have changed the owning SkBitmap to kOpaque_SkAlphaType after sniffing the encoded data, so if we see a request
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// for opaque, that is ok even if our initial alphatype was not opaque.
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return false;
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}
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return m_frameGenerator->decodeAndScale(info, m_frameIndex, pixels, rowBytes);
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}
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bool DecodingImageGenerator::onGetYUV8Planes(SkISize sizes[3], void* planes[3], size_t rowBytes[3])
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{
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if (!planes || !planes[0]) {
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return m_frameGenerator->getYUVComponentSizes(sizes);
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}
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TRACE_EVENT0("blink", "DecodingImageGenerator::onGetYUV8Planes");
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bool decoded = m_frameGenerator->decodeToYUV(planes, rowBytes);
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return decoded;
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}
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} // namespace blink
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