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1 /* | 1 /* |
2 * Copyright 2015 The WebRTC Project Authors. All rights reserved. | 2 * Copyright 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 #include "webrtc/base/ratetracker.h" | 11 #include "webrtc/base/ratetracker.h" |
12 | 12 |
13 #include <stddef.h> | 13 #include <stddef.h> |
14 | 14 |
15 #include <algorithm> | 15 #include <algorithm> |
16 | 16 |
17 #include "webrtc/base/checks.h" | 17 #include "webrtc/base/checks.h" |
18 #include "webrtc/base/timeutils.h" | 18 #include "webrtc/base/timeutils.h" |
19 | 19 |
20 namespace rtc { | 20 namespace rtc { |
21 | 21 |
22 RateTracker::RateTracker( | 22 RateTracker::RateTracker( |
23 uint32 bucket_milliseconds, size_t bucket_count) | 23 uint32 bucket_milliseconds, size_t bucket_count) |
24 : bucket_milliseconds_(bucket_milliseconds), | 24 : bucket_milliseconds_(bucket_milliseconds), |
25 bucket_count_(bucket_count), | 25 bucket_count_(bucket_count), |
26 sample_buckets_(new size_t[bucket_count + 1]), | 26 sample_buckets_(new size_t[bucket_count + 1]), |
27 total_sample_count_(0u), | 27 total_sample_count_(0u), |
28 bucket_start_time_milliseconds_(~0u) { | 28 bucket_start_time_milliseconds_(~0u) { |
29 CHECK(bucket_milliseconds > 0u); | 29 RTC_CHECK(bucket_milliseconds > 0u); |
30 CHECK(bucket_count > 0u); | 30 RTC_CHECK(bucket_count > 0u); |
31 } | 31 } |
32 | 32 |
33 RateTracker::~RateTracker() { | 33 RateTracker::~RateTracker() { |
34 delete[] sample_buckets_; | 34 delete[] sample_buckets_; |
35 } | 35 } |
36 | 36 |
37 double RateTracker::ComputeRateForInterval( | 37 double RateTracker::ComputeRateForInterval( |
38 uint32 interval_milliseconds) const { | 38 uint32 interval_milliseconds) const { |
39 if (bucket_start_time_milliseconds_ == ~0u) { | 39 if (bucket_start_time_milliseconds_ == ~0u) { |
40 return 0.0; | 40 return 0.0; |
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138 // current_bucket_ increments. | 138 // current_bucket_ increments. |
139 sample_buckets_[current_bucket_] = 0u; | 139 sample_buckets_[current_bucket_] = 0u; |
140 } | 140 } |
141 } | 141 } |
142 | 142 |
143 size_t RateTracker::NextBucketIndex(size_t bucket_index) const { | 143 size_t RateTracker::NextBucketIndex(size_t bucket_index) const { |
144 return (bucket_index + 1u) % (bucket_count_ + 1u); | 144 return (bucket_index + 1u) % (bucket_count_ + 1u); |
145 } | 145 } |
146 | 146 |
147 } // namespace rtc | 147 } // namespace rtc |
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