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01c14ff74b
I left this code along in my uber patch to remove the DOM and CSS, but it's just as dead. Also, move lone files out of dead directories into more sensible places.
79 lines
2.7 KiB
C++
79 lines
2.7 KiB
C++
// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/bind.h"
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#include "base/trace_event/trace_event.h"
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#include "base/message_loop/message_loop.h"
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#include "sky/engine/core/painting/CanvasImageDecoder.h"
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#include "sky/engine/core/painting/CanvasImage.h"
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#include "sky/engine/platform/SharedBuffer.h"
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#include "sky/engine/platform/image-decoders/ImageDecoder.h"
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#include "sky/engine/platform/mojo/data_pipe.h"
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namespace blink {
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PassRefPtr<CanvasImageDecoder> CanvasImageDecoder::create(
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PassOwnPtr<ImageDecoderCallback> callback) {
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return adoptRef(new CanvasImageDecoder(callback));
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}
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CanvasImageDecoder::CanvasImageDecoder(PassOwnPtr<ImageDecoderCallback> callback)
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: callback_(callback), weak_factory_(this) {
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CHECK(callback_);
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}
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CanvasImageDecoder::~CanvasImageDecoder() {
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}
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void CanvasImageDecoder::initWithConsumer(mojo::ScopedDataPipeConsumerHandle handle) {
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if (!handle.is_valid()) {
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base::MessageLoop::current()->PostTask(
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FROM_HERE, base::Bind(&CanvasImageDecoder::RejectCallback,
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weak_factory_.GetWeakPtr()));
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return;
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}
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DrainDataPipeInBackground(handle.Pass(),
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base::Bind(&CanvasImageDecoder::Decode, weak_factory_.GetWeakPtr()));
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}
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void CanvasImageDecoder::initWithList(const Uint8List& list) {
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RefPtr<SharedBuffer> buffer = SharedBuffer::create();
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buffer->append(reinterpret_cast<const char*>(list.data()),
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list.num_elements());
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base::MessageLoop::current()->PostTask(
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FROM_HERE, base::Bind(&CanvasImageDecoder::Decode,
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weak_factory_.GetWeakPtr(), buffer.release()));
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}
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void CanvasImageDecoder::Decode(PassRefPtr<SharedBuffer> buffer) {
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TRACE_EVENT0("blink", "CanvasImageDecoder::Decode");
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OwnPtr<ImageDecoder> decoder =
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ImageDecoder::create(*buffer.get(), ImageSource::AlphaPremultiplied,
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ImageSource::GammaAndColorProfileIgnored);
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// decoder can be null if the buffer we was empty and we couldn't even guess
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// what type of image to decode.
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if (!decoder) {
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callback_->handleEvent(nullptr);
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return;
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}
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decoder->setData(buffer.get(), true);
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if (decoder->failed() || decoder->frameCount() == 0) {
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callback_->handleEvent(nullptr);
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return;
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}
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RefPtr<CanvasImage> resultImage = CanvasImage::create();
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ImageFrame* imageFrame = decoder->frameBufferAtIndex(0);
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RefPtr<SkImage> skImage = adoptRef(SkImage::NewFromBitmap(imageFrame->getSkBitmap()));
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resultImage->setImage(skImage.release());
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callback_->handleEvent(resultImage.get());
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}
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void CanvasImageDecoder::RejectCallback() {
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callback_->handleEvent(nullptr);
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}
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} // namespace blink
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