Line data    Source code

       1             : /*
       2             :  *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
       3             :  *
       4             :  *  Use of this source code is governed by a BSD-style license
       5             :  *  that can be found in the LICENSE file in the root of the source
       6             :  *  tree. An additional intellectual property rights grant can be found
       7             :  *  in the file PATENTS.  All contributing project authors may
       8             :  *  be found in the AUTHORS file in the root of the source tree.
       9             :  */
      10             : 
      11             : #ifndef WEBRTC_MODULES_AUDIO_CODING_NETEQ_RTCP_H_
      12             : #define WEBRTC_MODULES_AUDIO_CODING_NETEQ_RTCP_H_
      13             : 
      14             : #include "webrtc/base/constructormagic.h"
      15             : #include "webrtc/modules/audio_coding/neteq/include/neteq.h"
      16             : #include "webrtc/typedefs.h"
      17             : 
      18             : namespace webrtc {
      19             : 
      20             : // Forward declaration.
      21             : struct RTPHeader;
      22             : 
      23             : class Rtcp {
      24             :  public:
      25           0 :   Rtcp() {
      26           0 :     Init(0);
      27           0 :   }
      28             : 
      29           0 :   ~Rtcp() {}
      30             : 
      31             :   // Resets the RTCP statistics, and sets the first received sequence number.
      32             :   void Init(uint16_t start_sequence_number);
      33             : 
      34             :   // Updates the RTCP statistics with a new received packet.
      35             :   void Update(const RTPHeader& rtp_header, uint32_t receive_timestamp);
      36             : 
      37             :   // Returns the current RTCP statistics. If |no_reset| is true, the statistics
      38             :   // are not reset, otherwise they are.
      39             :   void GetStatistics(bool no_reset, RtcpStatistics* stats);
      40             : 
      41             :  private:
      42             :   uint16_t cycles_;  // The number of wrap-arounds for the sequence number.
      43             :   uint16_t max_seq_no_;  // The maximum sequence number received. Starts over
      44             :                          // from 0 after wrap-around.
      45             :   uint16_t base_seq_no_;  // The sequence number of the first received packet.
      46             :   uint32_t received_packets_;  // The number of packets that have been received.
      47             :   uint32_t received_packets_prior_;  // Number of packets received when last
      48             :                                      // report was generated.
      49             :   uint32_t expected_prior_;  // Expected number of packets, at the time of the
      50             :                              // last report.
      51             :   int64_t jitter_;  // Current jitter value in Q4.
      52             :   int32_t transit_;  // Clock difference for previous packet.
      53             : 
      54             :   RTC_DISALLOW_COPY_AND_ASSIGN(Rtcp);
      55             : };
      56             : 
      57             : }  // namespace webrtc
      58             : #endif  // WEBRTC_MODULES_AUDIO_CODING_NETEQ_RTCP_H_