Add sender controlled playout delay limits

webrtc/modules/video_coding/jitter_buffer.h

 /*
  *  Copyright (c) 2012 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 134 matching lines @@
   // Statistics, Calculate frame and bit rates.
   void IncomingRateStatistics(unsigned int* framerate, unsigned int* bitrate);
 
   // Checks if the packet sequence will be complete if the next frame would be
   // grabbed for decoding. That is, if a frame has been lost between the
   // last decoded frame and the next, or if the next frame is missing one
   // or more packets.
   bool CompleteSequenceWithNextFrame();
 
   // Wait |max_wait_time_ms| for a complete frame to arrive.
-  // The function returns true once such a frame is found, its corresponding
-  // timestamp is returned. Otherwise, returns false.
-  bool NextCompleteTimestamp(uint32_t max_wait_time_ms, uint32_t* timestamp);
+  // If found, a pointer to the frame is returned. Returns nullptr otherwise.
+  VCMEncodedFrame* NextCompleteFrame(uint32_t max_wait_time_ms);
 
   // Locates a frame for decoding (even an incomplete) without delay.
   // The function returns true once such a frame is found, its corresponding
   // timestamp is returned. Otherwise, returns false.
   bool NextMaybeIncompleteTimestamp(uint32_t* timestamp);
 
   // Extract frame corresponding to input timestamp.
   // Frame will be set to a decoding state.
   VCMEncodedFrame* ExtractAndSetDecode(uint32_t timestamp);
 
@@ skipping 220 matching lines @@
   // frames.
   int frame_counter_;
 
   std::unique_ptr<NackModule> nack_module_;
 
   RTC_DISALLOW_COPY_AND_ASSIGN(VCMJitterBuffer);
 };
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_VIDEO_CODING_JITTER_BUFFER_H_