1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // FrameConsumerProxy is used to allow a FrameConsumer on the UI thread to be 6 // invoked by a Decoder on the decoder thread. The Detach() method is used by 7 // the proxy's owner before tearing down the FrameConsumer, to prevent any 8 // further invokations reaching it. 9 10 #ifndef REMOTING_CLIENT_FRAME_CONSUMER_PROXY_H_ 11 #define REMOTING_CLIENT_FRAME_CONSUMER_PROXY_H_ 12 13 #include "base/memory/ref_counted.h" 14 #include "base/memory/weak_ptr.h" 15 #include "remoting/client/frame_consumer.h" 16 17 namespace base { 18 class SingleThreadTaskRunner; 19 } // namespace base 20 21 namespace remoting { 22 23 class FrameConsumerProxy 24 : public base::RefCountedThreadSafe<FrameConsumerProxy>, 25 public FrameConsumer { 26 public: 27 // Constructs a proxy for |frame_consumer| which will trampoline invocations 28 // to |frame_consumer_message_loop|. 29 FrameConsumerProxy(scoped_refptr<base::SingleThreadTaskRunner> task_runner, 30 const base::WeakPtr<FrameConsumer>& frame_consumer); 31 32 // FrameConsumer implementation. 33 virtual void ApplyBuffer(const webrtc::DesktopSize& view_size, 34 const webrtc::DesktopRect& clip_area, 35 webrtc::DesktopFrame* buffer, 36 const webrtc::DesktopRegion& region, 37 const webrtc::DesktopRegion& shape) OVERRIDE; 38 virtual void ReturnBuffer(webrtc::DesktopFrame* buffer) OVERRIDE; 39 virtual void SetSourceSize(const webrtc::DesktopSize& source_size, 40 const webrtc::DesktopVector& dpi) OVERRIDE; 41 virtual PixelFormat GetPixelFormat() OVERRIDE; 42 43 private: 44 friend class base::RefCountedThreadSafe<FrameConsumerProxy>; 45 virtual ~FrameConsumerProxy(); 46 47 base::WeakPtr<FrameConsumer> frame_consumer_; 48 scoped_refptr<base::SingleThreadTaskRunner> task_runner_; 49 50 PixelFormat pixel_format_; 51 52 DISALLOW_COPY_AND_ASSIGN(FrameConsumerProxy); 53 }; 54 55 } // namespace remoting 56 57 #endif // REMOTING_CLIENT_FRAME_CONSUMER_PROXY_H_ 58