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      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 // VideoReader is a generic interface used by ConnectionToHost to read
      6 // video stream. ProtobufVideoReader implements this interface for
      7 // protobuf video stream.
      8 
      9 #ifndef REMOTING_PROTOCOL_VIDEO_READER_H_
     10 #define REMOTING_PROTOCOL_VIDEO_READER_H_
     11 
     12 #include "base/callback.h"
     13 #include "base/memory/scoped_ptr.h"
     14 #include "remoting/protocol/video_stub.h"
     15 
     16 namespace remoting {
     17 namespace protocol {
     18 
     19 class Session;
     20 class SessionConfig;
     21 
     22 class VideoReader {
     23  public:
     24   // The callback is called when initialization is finished. The
     25   // parameter is set to true on success.
     26   typedef base::Callback<void(bool)> InitializedCallback;
     27 
     28   virtual ~VideoReader();
     29 
     30   static scoped_ptr<VideoReader> Create(const SessionConfig& config);
     31 
     32   // Initializies the reader. Doesn't take ownership of either |connection|
     33   // or |video_stub|.
     34   virtual void Init(Session* session,
     35                     VideoStub* video_stub,
     36                     const InitializedCallback& callback) = 0;
     37   virtual bool is_connected() = 0;
     38 
     39  protected:
     40   VideoReader() { }
     41 
     42  private:
     43   DISALLOW_COPY_AND_ASSIGN(VideoReader);
     44 };
     45 
     46 }  // namespace protocol
     47 }  // namespace remoting
     48 
     49 #endif  // REMOTING_PROTOCOL_VIDEO_READER_H_
     50