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1888eacb75
Instead of joining the UI thread to copy data from the network into a buffer, we now drain the data pipe for image decoding on a background thread.
44 lines
1.4 KiB
C++
44 lines
1.4 KiB
C++
// SKY_ENGINE_CORE_PAINTING_CANVASIMAGE_H_
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// 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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#ifndef SKY_ENGINE_CORE_LOADER_CANVASIMAGELOADER_H_
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#define SKY_ENGINE_CORE_LOADER_CANVASIMAGELOADER_H_
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#include "base/memory/weak_ptr.h"
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#include "mojo/public/cpp/system/core.h"
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#include "sky/engine/core/loader/ImageDecoderCallback.h"
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#include "sky/engine/platform/SharedBuffer.h"
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#include "sky/engine/tonic/dart_wrappable.h"
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#include "sky/engine/tonic/uint8_list.h"
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#include "sky/engine/wtf/OwnPtr.h"
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#include "sky/engine/wtf/text/AtomicString.h"
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namespace blink {
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class CanvasImageDecoder : public RefCounted<CanvasImageDecoder>,
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public DartWrappable {
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DEFINE_WRAPPERTYPEINFO();
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public:
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static PassRefPtr<CanvasImageDecoder> create(PassOwnPtr<ImageDecoderCallback> callback);
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virtual ~CanvasImageDecoder();
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void initWithConsumer(mojo::ScopedDataPipeConsumerHandle handle);
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void initWithList(const Uint8List& list);
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private:
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explicit CanvasImageDecoder(PassOwnPtr<ImageDecoderCallback> callback);
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void Decode(PassRefPtr<SharedBuffer> buffer);
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void RejectCallback();
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OwnPtr<ImageDecoderCallback> callback_;
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base::WeakPtrFactory<CanvasImageDecoder> weak_factory_;
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};
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} // namespace blink
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#endif // SKY_ENGINE_CORE_LOADER_CANVASIMAGELOADER_H_
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