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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// FrameConsumerProxy is used to allow a FrameConsumer on the UI thread to be
// invoked by a Decoder on the decoder thread. The Detach() method is used by
// the proxy's owner before tearing down the FrameConsumer, to prevent any
// further invokations reaching it.
#ifndef REMOTING_CLIENT_FRAME_CONSUMER_PROXY_H_
#define REMOTING_CLIENT_FRAME_CONSUMER_PROXY_H_
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "remoting/client/frame_consumer.h"
namespace base {
class SingleThreadTaskRunner;
} // namespace base
namespace remoting {
class FrameConsumerProxy
: public base::RefCountedThreadSafe<FrameConsumerProxy>,
public FrameConsumer {
public:
// Constructs a proxy for |frame_consumer| which will trampoline invocations
// to |frame_consumer_message_loop|.
FrameConsumerProxy(scoped_refptr<base::SingleThreadTaskRunner> task_runner);
// FrameConsumer implementation.
virtual void ApplyBuffer(const SkISize& view_size,
const SkIRect& clip_area,
pp::ImageData* buffer,
const SkRegion& region) OVERRIDE;
virtual void ReturnBuffer(pp::ImageData* buffer) OVERRIDE;
virtual void SetSourceSize(const SkISize& source_size,
const SkIPoint& dpi) OVERRIDE;
// Attaches to |frame_consumer_|.
// This must only be called from |frame_consumer_message_loop_|.
void Attach(const base::WeakPtr<FrameConsumer>& frame_consumer);
private:
friend class base::RefCountedThreadSafe<FrameConsumerProxy>;
virtual ~FrameConsumerProxy();
base::WeakPtr<FrameConsumer> frame_consumer_;
scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
DISALLOW_COPY_AND_ASSIGN(FrameConsumerProxy);
};
} // namespace remoting
#endif // REMOTING_CLIENT_FRAME_CONSUMER_PROXY_H_
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