2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
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.
11 #ifndef WEBRTC_MODULES_REMOTE_BITRATE_ESTIMATOR_INCLUDE_RTP_TO_NTP_H_
12 #define WEBRTC_MODULES_REMOTE_BITRATE_ESTIMATOR_INCLUDE_RTP_TO_NTP_H_
16 #include "webrtc/typedefs.h"
20 namespace synchronization {
22 struct RtcpMeasurement {
24 RtcpMeasurement(uint32_t ntp_secs, uint32_t ntp_frac, uint32_t timestamp);
27 uint32_t rtp_timestamp;
30 typedef std::list<RtcpMeasurement> RtcpList;
32 // Converts an RTP timestamp to the NTP domain in milliseconds using two
33 // (RTP timestamp, NTP timestamp) pairs.
34 bool RtpToNtpMs(int64_t rtp_timestamp, const RtcpList& rtcp,
35 int64_t* timestamp_in_ms);
37 // Returns 1 there has been a forward wrap around, 0 if there has been no wrap
38 // around and -1 if there has been a backwards wrap around (i.e. reordering).
39 int CheckForWrapArounds(uint32_t rtp_timestamp, uint32_t rtcp_rtp_timestamp);
40 } // namespace synchronization
43 #endif // WEBRTC_MODULES_REMOTE_BITRATE_ESTIMATOR_INCLUDE_RTP_TO_NTP_H_