remoting/client/frame_consumer_proxy.h

   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/weak_ptr.h"
  14 #include "remoting/client/frame_consumer.h"
  15
  16 namespace base {
  17 class SingleThreadTaskRunner;
  18 }  // namespace base
  19
  20 namespace remoting {
  21
  22 class FrameConsumerProxy : public FrameConsumer {
  23  public:
  24   // Constructs a FrameConsumer proxy which can be passed to another thread,
  25   // and will direct calls to |frame_consumer| on the thread from which the
  26   // proxy was constructed.
  27   FrameConsumerProxy(const base::WeakPtr<FrameConsumer>& frame_consumer);
  28   ~FrameConsumerProxy() override;
  29
  30   // FrameConsumer implementation.
  31   void ApplyBuffer(const webrtc::DesktopSize& view_size,
  32                    const webrtc::DesktopRect& clip_area,
  33                    webrtc::DesktopFrame* buffer,
  34                    const webrtc::DesktopRegion& region,
  35                    const webrtc::DesktopRegion* shape) override;
  36   void ReturnBuffer(webrtc::DesktopFrame* buffer) override;
  37   void SetSourceSize(const webrtc::DesktopSize& source_size,
  38                      const webrtc::DesktopVector& dpi) override;
  39   PixelFormat GetPixelFormat() override;
  40
  41  private:
  42   base::WeakPtr<FrameConsumer> frame_consumer_;
  43
  44   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
  45   PixelFormat pixel_format_;
  46
  47   DISALLOW_COPY_AND_ASSIGN(FrameConsumerProxy);
  48 };
  49
  50 }  // namespace remoting
  51
  52 #endif  // REMOTING_CLIENT_FRAME_CONSUMER_PROXY_H_