remoting/codec/video_encoder.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 #ifndef REMOTING_CODEC_VIDEO_ENCODER_H_
   6 #define REMOTING_CODEC_VIDEO_ENCODER_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/callback.h"
  10
  11 class SkRegion;
  12
  13 namespace webrtc {
  14 class DesktopFrame;
  15 }  // namespace webrtc
  16
  17 namespace remoting {
  18
  19 class VideoPacket;
  20
  21 // A class to perform the task of encoding a continuous stream of images. The
  22 // interface is asynchronous to enable maximum throughput.
  23 class VideoEncoder {
  24  public:
  25
  26   // DataAvailableCallback is called one or more times, for each chunk the
  27   // underlying video encoder generates.
  28   typedef base::Callback<void(scoped_ptr<VideoPacket>)> DataAvailableCallback;
  29
  30   virtual ~VideoEncoder() {}
  31
  32   // Encode an image stored in |frame|. Doesn't take ownership of |frame|. When
  33   // encoded data is available, partial or full |data_available_callback| is
  34   // called.
  35   virtual void Encode(const webrtc::DesktopFrame* frame,
  36                       const DataAvailableCallback& data_available_callback) = 0;
  37 };
  38
  39 }  // namespace remoting
  40
  41 #endif  // REMOTING_CODEC_VIDEO_ENCODER_H_