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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "media/cast/test/skewed_tick_clock.h"
#include "base/time/time.h"
namespace media {
namespace cast {
namespace test {
SkewedTickClock::SkewedTickClock(base::TickClock* clock)
: clock_(clock),
skew_(1.0),
last_skew_set_time_(clock_->NowTicks()),
skew_clock_at_last_set_(last_skew_set_time_) {
}
base::TimeTicks SkewedTickClock::SkewTicks(base::TimeTicks now) {
return base::TimeDelta::FromMicroseconds(
(now - last_skew_set_time_).InMicroseconds() * skew_) +
skew_clock_at_last_set_;
}
void SkewedTickClock::SetSkew(double skew, base::TimeDelta offset) {
base::TimeTicks now = clock_->NowTicks();
skew_clock_at_last_set_ = SkewTicks(now) + offset;
skew_ = skew;
last_skew_set_time_ = now;
}
base::TimeTicks SkewedTickClock::NowTicks() {
return SkewTicks(clock_->NowTicks());
}
} // namespace test
} // namespace cast
} // namespace media
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