Implement adaptive target delay extension

media/cast/net/cast_transport_config.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MEDIA_CAST_NET_CAST_TRANSPORT_CONFIG_H_
 #define MEDIA_CAST_NET_CAST_TRANSPORT_CONFIG_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 99 matching lines @@
 
   // The common reference clock timestamp for this frame.  This value originates
   // from a sender and is used to provide lip synchronization between streams in
   // a receiver.  Thus, in the sender context, this is set to the time at which
   // the frame was captured/recorded.  In the receiver context, this is set to
   // the target playout time.  Over a sequence of frames, this time value is
   // expected to drift with respect to the elapsed time implied by the RTP
   // timestamps; and it may not necessarily increment with precise regularity.
   base::TimeTicks reference_time;
 
+  // Playout delay for this and all future frames. Used by the Adaptive
+  // Playout delay extension. Zero means no change.
+  uint16 new_playout_delay_ms;
+
   // The encoded signal data.
   std::string data;
 };
 
 typedef std::vector<uint8> Packet;
 typedef scoped_refptr<base::RefCountedData<Packet> > PacketRef;
 typedef std::vector<PacketRef> PacketList;
 
 typedef base::Callback<void(scoped_ptr<Packet> packet)> PacketReceiverCallback;
 
@@ skipping 49 matching lines @@
          lhs.ntp_fraction == rhs.ntp_fraction &&
          lhs.rtp_timestamp == rhs.rtp_timestamp &&
          lhs.send_packet_count == rhs.send_packet_count &&
          lhs.send_octet_count == rhs.send_octet_count;
 }
 
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_NET_CAST_TRANSPORT_CONFIG_H_