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// Copyright 2011 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ppapi/shared_impl/time_conversion.h"
namespace ppapi {
PP_Time TimeToPPTime(base::Time t) {
return t.InSecondsFSinceUnixEpoch();
}
base::Time PPTimeToTime(PP_Time t) {
// The time code handles exact "0" values as special, and produces
// a "null" Time object. But calling code would expect t==0 to represent the
// epoch (according to the description of PP_Time). Hence we just return the
// epoch in this case.
if (t == 0.0)
return base::Time::UnixEpoch();
return base::Time::FromSecondsSinceUnixEpoch(t);
}
PP_TimeTicks TimeTicksToPPTimeTicks(base::TimeTicks t) {
return static_cast<double>(t.ToInternalValue()) /
base::Time::kMicrosecondsPerSecond;
}
double PPGetLocalTimeZoneOffset(const base::Time& time) {
// Explode it to local time and then unexplode it as if it were UTC. Also
// explode it to UTC and unexplode it (this avoids mismatching rounding or
// lack thereof). The time zone offset is their difference.
base::Time::Exploded exploded = {0};
base::Time::Exploded utc_exploded = {0};
time.LocalExplode(&exploded);
time.UTCExplode(&utc_exploded);
if (exploded.HasValidValues() && utc_exploded.HasValidValues()) {
base::Time adj_time;
if (base::Time::FromUTCExploded(exploded, &adj_time)) {
base::Time cur;
if (base::Time::FromUTCExploded(utc_exploded, &cur))
return (adj_time - cur).InSecondsF();
}
}
return 0.0;
}
} // namespace ppapi
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