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/*
* Copyright (c) 2023 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "test/pc/e2e/analyzer/video/dvqa/pausable_state.h"
#include <cstdint>
#include "api/units/time_delta.h"
#include "api/units/timestamp.h"
#include "rtc_base/checks.h"
namespace webrtc {
void PausableState::Pause() {
if (!IsPaused()) {
events_.push_back(Event{.time = clock_->CurrentTime(), .is_paused = true});
}
}
void PausableState::Resume() {
if (IsPaused()) {
events_.push_back(Event{.time = clock_->CurrentTime(), .is_paused = false});
}
}
bool PausableState::IsPaused() const {
return !events_.empty() && events_.back().is_paused;
}
bool PausableState::WasPausedAt(Timestamp time) const {
if (events_.empty()) {
return false;
}
int64_t pos = GetPos(time);
return pos != -1 && events_[pos].is_paused;
}
bool PausableState::WasResumedAfter(Timestamp time) const {
if (events_.empty()) {
return false;
}
int64_t pos = GetPos(time);
return (pos + 1 < static_cast<int64_t>(events_.size())) &&
!events_[pos + 1].is_paused;
}
Timestamp PausableState::GetLastEventTime() const {
if (events_.empty()) {
return Timestamp::PlusInfinity();
}
return events_.back().time;
}
TimeDelta PausableState::GetActiveDurationFrom(Timestamp time) const {
if (events_.empty()) {
return clock_->CurrentTime() - time;
}
int64_t pos = GetPos(time);
TimeDelta duration = TimeDelta::Zero();
for (int64_t i = pos; i < static_cast<int64_t>(events_.size()); ++i) {
if (i == -1 || !events_[i].is_paused) {
Timestamp start_time = (i == pos) ? time : events_[i].time;
Timestamp end_time = (i + 1 == static_cast<int64_t>(events_.size()))
? clock_->CurrentTime()
: events_[i + 1].time;
duration += end_time - start_time;
}
}
return duration;
}
int64_t PausableState::GetPos(Timestamp time) const {
int64_t l = 0, r = events_.size() - 1;
while (l < r) {
int64_t pos = (l + r) / 2;
if (time < events_[pos].time) {
r = pos;
} else if (time >= events_[pos].time) {
l = pos + 1;
}
}
if (time < events_[l].time) {
return l - 1;
} else {
return l;
}
}
} // namespace webrtc
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