Revert of Replace interface VideoCapturerInput with VideoSinkInterface.

webrtc/video_send_stream.h

 /*
  *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #ifndef WEBRTC_VIDEO_SEND_STREAM_H_
 #define WEBRTC_VIDEO_SEND_STREAM_H_
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "webrtc/common_types.h"
 #include "webrtc/common_video/include/frame_callback.h"
 #include "webrtc/config.h"
 #include "webrtc/media/base/videosinkinterface.h"
-#include "webrtc/media/base/videosourceinterface.h"
 #include "webrtc/transport.h"
 
 namespace webrtc {
 
 class LoadObserver;
 class VideoEncoder;
 
+// Class to deliver captured frame to the video send stream.
+class VideoCaptureInput {
+ public:
+  // These methods do not lock internally and must be called sequentially.
+  // If your application switches input sources synchronization must be done
+  // externally to make sure that any old frames are not delivered concurrently.
+  virtual void IncomingCapturedFrame(const VideoFrame& video_frame) = 0;
+
+ protected:
+  virtual ~VideoCaptureInput() {}
+};
+
 class VideoSendStream {
  public:
   struct StreamStats {
     std::string ToString() const;
 
     FrameCounts frame_counts;
     bool is_rtx = false;
     int width = 0;
     int height = 0;
     // TODO(holmer): Move bitrate_bps out to the webrtc::Call layer.
@@ skipping 135 matching lines @@
     Config(const Config&) = default;
   };
 
   // Starts stream activity.
   // When a stream is active, it can receive, process and deliver packets.
   virtual void Start() = 0;
   // Stops stream activity.
   // When a stream is stopped, it can't receive, process or deliver packets.
   virtual void Stop() = 0;
 
-  virtual void SetSource(
-      rtc::VideoSourceInterface<webrtc::VideoFrame>* source) = 0;
+  // Gets interface used to insert captured frames. Valid as long as the
+  // VideoSendStream is valid.
+  virtual VideoCaptureInput* Input() = 0;
 
   // Set which streams to send. Must have at least as many SSRCs as configured
   // in the config. Encoder settings are passed on to the encoder instance along
   // with the VideoStream settings.
   virtual void ReconfigureVideoEncoder(VideoEncoderConfig config) = 0;
 
   virtual Stats GetStats() = 0;
 
  protected:
   virtual ~VideoSendStream() {}
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_VIDEO_SEND_STREAM_H_