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1 /* | 1 /* |
2 * Copyright (c) 2015 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2015 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 #ifndef WEBRTC_MODULES_RTP_RTCP_SOURCE_TIME_UTIL_H_ | 11 #ifndef WEBRTC_MODULES_RTP_RTCP_SOURCE_TIME_UTIL_H_ |
12 #define WEBRTC_MODULES_RTP_RTCP_SOURCE_TIME_UTIL_H_ | 12 #define WEBRTC_MODULES_RTP_RTCP_SOURCE_TIME_UTIL_H_ |
13 | 13 |
14 #include "webrtc/base/basictypes.h" | 14 #include <stdint.h> |
| 15 |
15 #include "webrtc/system_wrappers/include/ntp_time.h" | 16 #include "webrtc/system_wrappers/include/ntp_time.h" |
16 | 17 |
17 namespace webrtc { | 18 namespace webrtc { |
18 | 19 |
19 // Converts NTP timestamp to RTP timestamp. | 20 // Converts NTP timestamp to RTP timestamp. |
20 inline uint32_t NtpToRtp(NtpTime ntp, uint32_t freq) { | 21 inline uint32_t NtpToRtp(NtpTime ntp, uint32_t freq) { |
21 uint32_t tmp = (static_cast<uint64_t>(ntp.fractions()) * freq) >> 32; | 22 uint32_t tmp = (static_cast<uint64_t>(ntp.fractions()) * freq) >> 32; |
22 return ntp.seconds() * freq + tmp; | 23 return ntp.seconds() * freq + tmp; |
23 } | 24 } |
24 // Return the current RTP timestamp from the NTP timestamp | 25 // Return the current RTP timestamp from the NTP timestamp |
(...skipping 13 matching lines...) Expand all Loading... |
38 inline uint32_t CompactNtp(NtpTime ntp) { | 39 inline uint32_t CompactNtp(NtpTime ntp) { |
39 return (ntp.seconds() << 16) | (ntp.fractions() >> 16); | 40 return (ntp.seconds() << 16) | (ntp.fractions() >> 16); |
40 } | 41 } |
41 // Converts interval between compact ntp timestamps to milliseconds. | 42 // Converts interval between compact ntp timestamps to milliseconds. |
42 // This interval can be up to ~9.1 hours (2^15 seconds). | 43 // This interval can be up to ~9.1 hours (2^15 seconds). |
43 // Values close to 2^16 seconds consider negative and result in minimum rtt = 1. | 44 // Values close to 2^16 seconds consider negative and result in minimum rtt = 1. |
44 int64_t CompactNtpRttToMs(uint32_t compact_ntp_interval); | 45 int64_t CompactNtpRttToMs(uint32_t compact_ntp_interval); |
45 | 46 |
46 } // namespace webrtc | 47 } // namespace webrtc |
47 #endif // WEBRTC_MODULES_RTP_RTCP_SOURCE_TIME_UTIL_H_ | 48 #endif // WEBRTC_MODULES_RTP_RTCP_SOURCE_TIME_UTIL_H_ |
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