Add sender controlled playout delay limits

webrtc/video_frame.h

 /*
  *  Copyright (c) 2014 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.
  */
 
@@ skipping 161 matching lines @@
   int64_t ntp_time_ms_ = 0;
   int64_t capture_time_ms_ = 0;
   FrameType _frameType = kVideoFrameDelta;
   uint8_t* _buffer;
   size_t _length;
   size_t _size;
   VideoRotation rotation_ = kVideoRotation_0;
   bool _completeFrame = false;
   AdaptReason adapt_reason_;
   int qp_ = -1;  // Quantizer value.
+  // Minimum and maximum playout delay values from capture to render.
+  // These are beset effort values.
+  //
+  // A value < 0 indicates on indicates no change from previous
+  // valid value.
+  //
+  // min = max = 0 indicates that the receiver should try and render
+  // frame as soon as possible.
+  //
+  // min = x, max = y indicates that the receiver is free to adapt
+  // in the range (x, y) based on network jitter.
+  int min_playout_delay_ms = -1;
+  int max_playout_delay_ms = -1;
 };
 
 }  // namespace webrtc
 #endif  // WEBRTC_VIDEO_FRAME_H_