1 /*
2 * Copyright 2019 The WebRTC Project Authors. All rights reserved.
3 *
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
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10
11 #include "video/quality_limitation_reason_tracker.h"
12
13 #include <utility>
14
15 #include "rtc_base/checks.h"
16
17 namespace webrtc {
18
QualityLimitationReasonTracker(Clock * clock)19 QualityLimitationReasonTracker::QualityLimitationReasonTracker(Clock* clock)
20 : clock_(clock),
21 current_reason_(QualityLimitationReason::kNone),
22 current_reason_updated_timestamp_ms_(clock_->TimeInMilliseconds()),
23 durations_ms_({std::make_pair(QualityLimitationReason::kNone, 0),
24 std::make_pair(QualityLimitationReason::kCpu, 0),
25 std::make_pair(QualityLimitationReason::kBandwidth, 0),
26 std::make_pair(QualityLimitationReason::kOther, 0)}) {}
27
current_reason() const28 QualityLimitationReason QualityLimitationReasonTracker::current_reason() const {
29 return current_reason_;
30 }
31
SetReason(QualityLimitationReason reason)32 void QualityLimitationReasonTracker::SetReason(QualityLimitationReason reason) {
33 if (reason == current_reason_)
34 return;
35 int64_t now_ms = clock_->TimeInMilliseconds();
36 durations_ms_[current_reason_] +=
37 now_ms - current_reason_updated_timestamp_ms_;
38 current_reason_ = reason;
39 current_reason_updated_timestamp_ms_ = now_ms;
40 }
41
42 std::map<QualityLimitationReason, int64_t>
DurationsMs() const43 QualityLimitationReasonTracker::DurationsMs() const {
44 std::map<QualityLimitationReason, int64_t> total_durations_ms = durations_ms_;
45 auto it = total_durations_ms.find(current_reason_);
46 RTC_DCHECK(it != total_durations_ms.end());
47 it->second +=
48 clock_->TimeInMilliseconds() - current_reason_updated_timestamp_ms_;
49 return total_durations_ms;
50 }
51
52 } // namespace webrtc
53