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1 /* | 1 /* |
2 * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 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 | 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 | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
11 #include "webrtc/modules/rtp_rtcp/source/receive_statistics_impl.h" | 11 #include "webrtc/modules/rtp_rtcp/source/receive_statistics_impl.h" |
12 | 12 |
13 #include <math.h> | 13 #include <math.h> |
14 | 14 |
| 15 #include <cstdlib> |
| 16 |
15 #include "webrtc/modules/rtp_rtcp/source/bitrate.h" | 17 #include "webrtc/modules/rtp_rtcp/source/bitrate.h" |
16 #include "webrtc/modules/rtp_rtcp/source/time_util.h" | 18 #include "webrtc/modules/rtp_rtcp/source/time_util.h" |
17 | 19 |
18 namespace webrtc { | 20 namespace webrtc { |
19 | 21 |
20 const int64_t kStatisticsTimeoutMs = 8000; | 22 const int64_t kStatisticsTimeoutMs = 8000; |
21 const int64_t kStatisticsProcessIntervalMs = 1000; | 23 const int64_t kStatisticsProcessIntervalMs = 1000; |
22 | 24 |
23 StreamStatistician::~StreamStatistician() {} | 25 StreamStatistician::~StreamStatistician() {} |
24 | 26 |
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106 | 108 |
107 void StreamStatisticianImpl::UpdateJitter(const RTPHeader& header, | 109 void StreamStatisticianImpl::UpdateJitter(const RTPHeader& header, |
108 NtpTime receive_time) { | 110 NtpTime receive_time) { |
109 uint32_t receive_time_rtp = | 111 uint32_t receive_time_rtp = |
110 NtpToRtp(receive_time, header.payload_type_frequency); | 112 NtpToRtp(receive_time, header.payload_type_frequency); |
111 uint32_t last_receive_time_rtp = | 113 uint32_t last_receive_time_rtp = |
112 NtpToRtp(last_receive_time_ntp_, header.payload_type_frequency); | 114 NtpToRtp(last_receive_time_ntp_, header.payload_type_frequency); |
113 int32_t time_diff_samples = (receive_time_rtp - last_receive_time_rtp) - | 115 int32_t time_diff_samples = (receive_time_rtp - last_receive_time_rtp) - |
114 (header.timestamp - last_received_timestamp_); | 116 (header.timestamp - last_received_timestamp_); |
115 | 117 |
116 time_diff_samples = abs(time_diff_samples); | 118 time_diff_samples = std::abs(time_diff_samples); |
117 | 119 |
118 // lib_jingle sometimes deliver crazy jumps in TS for the same stream. | 120 // lib_jingle sometimes deliver crazy jumps in TS for the same stream. |
119 // If this happens, don't update jitter value. Use 5 secs video frequency | 121 // If this happens, don't update jitter value. Use 5 secs video frequency |
120 // as the threshold. | 122 // as the threshold. |
121 if (time_diff_samples < 450000) { | 123 if (time_diff_samples < 450000) { |
122 // Note we calculate in Q4 to avoid using float. | 124 // Note we calculate in Q4 to avoid using float. |
123 int32_t jitter_diff_q4 = (time_diff_samples << 4) - jitter_q4_; | 125 int32_t jitter_diff_q4 = (time_diff_samples << 4) - jitter_q4_; |
124 jitter_q4_ += ((jitter_diff_q4 + 8) >> 4); | 126 jitter_q4_ += ((jitter_diff_q4 + 8) >> 4); |
125 } | 127 } |
126 | 128 |
127 // Extended jitter report, RFC 5450. | 129 // Extended jitter report, RFC 5450. |
128 // Actual network jitter, excluding the source-introduced jitter. | 130 // Actual network jitter, excluding the source-introduced jitter. |
129 int32_t time_diff_samples_ext = | 131 int32_t time_diff_samples_ext = |
130 (receive_time_rtp - last_receive_time_rtp) - | 132 (receive_time_rtp - last_receive_time_rtp) - |
131 ((header.timestamp + | 133 ((header.timestamp + |
132 header.extension.transmissionTimeOffset) - | 134 header.extension.transmissionTimeOffset) - |
133 (last_received_timestamp_ + | 135 (last_received_timestamp_ + |
134 last_received_transmission_time_offset_)); | 136 last_received_transmission_time_offset_)); |
135 | 137 |
136 time_diff_samples_ext = abs(time_diff_samples_ext); | 138 time_diff_samples_ext = std::abs(time_diff_samples_ext); |
137 | 139 |
138 if (time_diff_samples_ext < 450000) { | 140 if (time_diff_samples_ext < 450000) { |
139 int32_t jitter_diffQ4TransmissionTimeOffset = | 141 int32_t jitter_diffQ4TransmissionTimeOffset = |
140 (time_diff_samples_ext << 4) - jitter_q4_transmission_time_offset_; | 142 (time_diff_samples_ext << 4) - jitter_q4_transmission_time_offset_; |
141 jitter_q4_transmission_time_offset_ += | 143 jitter_q4_transmission_time_offset_ += |
142 ((jitter_diffQ4TransmissionTimeOffset + 8) >> 4); | 144 ((jitter_diffQ4TransmissionTimeOffset + 8) >> 4); |
143 } | 145 } |
144 } | 146 } |
145 | 147 |
146 void StreamStatisticianImpl::NotifyRtpCallback() { | 148 void StreamStatisticianImpl::NotifyRtpCallback() { |
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527 | 529 |
528 void NullReceiveStatistics::Process() {} | 530 void NullReceiveStatistics::Process() {} |
529 | 531 |
530 void NullReceiveStatistics::RegisterRtcpStatisticsCallback( | 532 void NullReceiveStatistics::RegisterRtcpStatisticsCallback( |
531 RtcpStatisticsCallback* callback) {} | 533 RtcpStatisticsCallback* callback) {} |
532 | 534 |
533 void NullReceiveStatistics::RegisterRtpStatisticsCallback( | 535 void NullReceiveStatistics::RegisterRtpStatisticsCallback( |
534 StreamDataCountersCallback* callback) {} | 536 StreamDataCountersCallback* callback) {} |
535 | 537 |
536 } // namespace webrtc | 538 } // namespace webrtc |
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