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/*
* 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.
*/
#ifndef SYSTEM_WRAPPERS_INTERFACE_RTP_TO_NTP_H_
#define SYSTEM_WRAPPERS_INTERFACE_RTP_TO_NTP_H_
#include <list>
#include "webrtc/typedefs.h"
namespace webrtc {
struct RtcpMeasurement {
RtcpMeasurement();
RtcpMeasurement(uint32_t ntp_secs, uint32_t ntp_frac, uint32_t timestamp);
uint32_t ntp_secs;
uint32_t ntp_frac;
uint32_t rtp_timestamp;
};
typedef std::list<RtcpMeasurement> RtcpList;
// Updates |rtcp_list| with timestamps from the latest RTCP SR.
// |new_rtcp_sr| will be set to true if these are the timestamps which have
// never be added to |rtcp_list|.
bool UpdateRtcpList(uint32_t ntp_secs,
uint32_t ntp_frac,
uint32_t rtp_timestamp,
RtcpList* rtcp_list,
bool* new_rtcp_sr);
// Converts an RTP timestamp to the NTP domain in milliseconds using two
// (RTP timestamp, NTP timestamp) pairs.
bool RtpToNtpMs(int64_t rtp_timestamp, const RtcpList& rtcp,
int64_t* timestamp_in_ms);
// Returns 1 there has been a forward wrap around, 0 if there has been no wrap
// around and -1 if there has been a backwards wrap around (i.e. reordering).
int CheckForWrapArounds(uint32_t rtp_timestamp, uint32_t rtcp_rtp_timestamp);
} // namespace webrtc
#endif // SYSTEM_WRAPPERS_INTERFACE_RTP_TO_NTP_H_
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