OLD | NEW |
1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "net/quic/quic_bandwidth.h" | 5 #include "net/quic/quic_bandwidth.h" |
6 | 6 |
7 #include "base/logging.h" | 7 #include "base/logging.h" |
8 #include "base/time/time.h" | 8 #include "base/time/time.h" |
9 | 9 |
10 namespace net { | 10 namespace net { |
(...skipping 28 matching lines...) Expand all Loading... |
39 DCHECK(k_bytes_per_second < kQuicInfiniteBandwidth / 8000); | 39 DCHECK(k_bytes_per_second < kQuicInfiniteBandwidth / 8000); |
40 return QuicBandwidth(k_bytes_per_second * 8000); | 40 return QuicBandwidth(k_bytes_per_second * 8000); |
41 } | 41 } |
42 | 42 |
43 // static | 43 // static |
44 QuicBandwidth QuicBandwidth::FromBytesAndTimeDelta(QuicByteCount bytes, | 44 QuicBandwidth QuicBandwidth::FromBytesAndTimeDelta(QuicByteCount bytes, |
45 QuicTime::Delta delta) { | 45 QuicTime::Delta delta) { |
46 DCHECK_LT(bytes, | 46 DCHECK_LT(bytes, |
47 static_cast<uint64>(kQuicInfiniteBandwidth / | 47 static_cast<uint64>(kQuicInfiniteBandwidth / |
48 (8 * base::Time::kMicrosecondsPerSecond))); | 48 (8 * base::Time::kMicrosecondsPerSecond))); |
49 int64 bytes_per_second = (bytes * base::Time::kMicrosecondsPerSecond) / | 49 int64 bytes_per_second = |
50 delta.ToMicroseconds(); | 50 (bytes * base::Time::kMicrosecondsPerSecond) / delta.ToMicroseconds(); |
51 return QuicBandwidth(bytes_per_second * 8); | 51 return QuicBandwidth(bytes_per_second * 8); |
52 } | 52 } |
53 | 53 |
54 QuicBandwidth::QuicBandwidth(int64 bits_per_second) | 54 QuicBandwidth::QuicBandwidth(int64 bits_per_second) |
55 : bits_per_second_(bits_per_second) { | 55 : bits_per_second_(bits_per_second) { |
56 DCHECK_GE(bits_per_second, 0); | 56 DCHECK_GE(bits_per_second, 0); |
57 } | 57 } |
58 | 58 |
59 int64 QuicBandwidth::ToBitsPerSecond() const { | 59 int64 QuicBandwidth::ToBitsPerSecond() const { |
60 return bits_per_second_; | 60 return bits_per_second_; |
61 } | 61 } |
62 | 62 |
63 int64 QuicBandwidth::ToKBitsPerSecond() const { | 63 int64 QuicBandwidth::ToKBitsPerSecond() const { |
64 return bits_per_second_ / 1000; | 64 return bits_per_second_ / 1000; |
65 } | 65 } |
66 | 66 |
67 int64 QuicBandwidth::ToBytesPerSecond() const { | 67 int64 QuicBandwidth::ToBytesPerSecond() const { |
68 return bits_per_second_ / 8; | 68 return bits_per_second_ / 8; |
69 } | 69 } |
70 | 70 |
71 int64 QuicBandwidth::ToKBytesPerSecond() const { | 71 int64 QuicBandwidth::ToKBytesPerSecond() const { |
72 return bits_per_second_ / 8000; | 72 return bits_per_second_ / 8000; |
73 } | 73 } |
74 | 74 |
75 QuicByteCount QuicBandwidth::ToBytesPerPeriod( | 75 QuicByteCount QuicBandwidth::ToBytesPerPeriod( |
76 QuicTime::Delta time_period) const { | 76 QuicTime::Delta time_period) const { |
77 return ToBytesPerSecond() * time_period.ToMicroseconds() / | 77 return ToBytesPerSecond() * time_period.ToMicroseconds() / |
78 base::Time::kMicrosecondsPerSecond; | 78 base::Time::kMicrosecondsPerSecond; |
79 } | 79 } |
80 | 80 |
81 int64 QuicBandwidth::ToKBytesPerPeriod(QuicTime::Delta time_period) const { | 81 int64 QuicBandwidth::ToKBytesPerPeriod(QuicTime::Delta time_period) const { |
82 return ToKBytesPerSecond() * time_period.ToMicroseconds() / | 82 return ToKBytesPerSecond() * time_period.ToMicroseconds() / |
83 base::Time::kMicrosecondsPerSecond; | 83 base::Time::kMicrosecondsPerSecond; |
84 } | 84 } |
85 | 85 |
86 bool QuicBandwidth::IsZero() const { | 86 bool QuicBandwidth::IsZero() const { |
87 return (bits_per_second_ == 0); | 87 return (bits_per_second_ == 0); |
88 } | 88 } |
89 | 89 |
90 QuicBandwidth QuicBandwidth::Add(const QuicBandwidth& delta) const { | 90 QuicBandwidth QuicBandwidth::Add(const QuicBandwidth& delta) const { |
91 return QuicBandwidth(bits_per_second_ + delta.bits_per_second_); | 91 return QuicBandwidth(bits_per_second_ + delta.bits_per_second_); |
92 } | 92 } |
93 | 93 |
94 QuicBandwidth QuicBandwidth::Subtract(const QuicBandwidth& delta) const { | 94 QuicBandwidth QuicBandwidth::Subtract(const QuicBandwidth& delta) const { |
95 return QuicBandwidth(bits_per_second_ - delta.bits_per_second_); | 95 return QuicBandwidth(bits_per_second_ - delta.bits_per_second_); |
96 } | 96 } |
97 | 97 |
98 QuicBandwidth QuicBandwidth::Scale(float scale_factor) const { | 98 QuicBandwidth QuicBandwidth::Scale(float scale_factor) const { |
99 return QuicBandwidth(bits_per_second_ * scale_factor); | 99 return QuicBandwidth(bits_per_second_ * scale_factor); |
100 } | 100 } |
101 | 101 |
102 QuicTime::Delta QuicBandwidth::TransferTime(QuicByteCount bytes) const { | 102 QuicTime::Delta QuicBandwidth::TransferTime(QuicByteCount bytes) const { |
103 return QuicTime::Delta::FromMicroseconds( | 103 return QuicTime::Delta::FromMicroseconds( |
104 bytes * 8 * base::Time::kMicrosecondsPerSecond / bits_per_second_); | 104 bytes * 8 * base::Time::kMicrosecondsPerSecond / bits_per_second_); |
105 } | 105 } |
106 | 106 |
107 } // namespace net | 107 } // namespace net |
OLD | NEW |