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1 /* | 1 /* |
2 * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2016 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_VIDEO_CODING_SEQUENCE_NUMBER_UTIL_H_ | 11 #ifndef WEBRTC_MODULES_VIDEO_CODING_SEQUENCE_NUMBER_UTIL_H_ |
12 #define WEBRTC_MODULES_VIDEO_CODING_SEQUENCE_NUMBER_UTIL_H_ | 12 #define WEBRTC_MODULES_VIDEO_CODING_SEQUENCE_NUMBER_UTIL_H_ |
13 | 13 |
14 #include <limits> | 14 #include <limits> |
15 #include <type_traits> | 15 #include <type_traits> |
16 | 16 |
17 #include "webrtc/rtc_base/mod_ops.h" | 17 #include "webrtc/base/mod_ops.h" |
18 | 18 |
19 namespace webrtc { | 19 namespace webrtc { |
20 | 20 |
21 // Test if the sequence number |a| is ahead or at sequence number |b|. | 21 // Test if the sequence number |a| is ahead or at sequence number |b|. |
22 // | 22 // |
23 // If |M| is an even number and the two sequence numbers are at max distance | 23 // If |M| is an even number and the two sequence numbers are at max distance |
24 // from each other, then the sequence number with the highest value is | 24 // from each other, then the sequence number with the highest value is |
25 // considered to be ahead. | 25 // considered to be ahead. |
26 template <typename T, T M> | 26 template <typename T, T M> |
27 inline bool AheadOrAt(T a, T b) { | 27 inline bool AheadOrAt(T a, T b) { |
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101 : private internal::SeqNumComp<T, std::integral_constant<T, M>> { | 101 : private internal::SeqNumComp<T, std::integral_constant<T, M>> { |
102 bool operator()(T a, T b) const { | 102 bool operator()(T a, T b) const { |
103 return internal::SeqNumComp<T, std::integral_constant<T, M>>::operator()(b, | 103 return internal::SeqNumComp<T, std::integral_constant<T, M>>::operator()(b, |
104 a); | 104 a); |
105 } | 105 } |
106 }; | 106 }; |
107 | 107 |
108 } // namespace webrtc | 108 } // namespace webrtc |
109 | 109 |
110 #endif // WEBRTC_MODULES_VIDEO_CODING_SEQUENCE_NUMBER_UTIL_H_ | 110 #endif // WEBRTC_MODULES_VIDEO_CODING_SEQUENCE_NUMBER_UTIL_H_ |
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