MediaTime MediaTime::createWithFloat(float floatTime)
{
if (floatTime != floatTime)
return invalidTime();
if (std::isinf(floatTime))
return std::signbit(floatTime) ? negativeInfiniteTime() : positiveInfiniteTime();
if (floatTime > std::numeric_limits<int64_t>::max())
return positiveInfiniteTime();
if (floatTime < std::numeric_limits<int64_t>::min())
return negativeInfiniteTime();
MediaTime value(0, DefaultTimeScale, Valid | DoubleValue);
value.m_timeValueAsDouble = floatTime;
return value;
}
MediaTime MediaTime::createWithDouble(double doubleTime, int32_t timeScale)
{
if (doubleTime != doubleTime)
return invalidTime();
if (isinf(doubleTime))
return signbit(doubleTime) ? negativeInfiniteTime() : positiveInfiniteTime();
if (doubleTime > numeric_limits<int64_t>::max())
return positiveInfiniteTime();
if (doubleTime < numeric_limits<int64_t>::min())
return negativeInfiniteTime();
while (doubleTime * timeScale > numeric_limits<int64_t>::max())
timeScale /= 2;
return MediaTime(static_cast<int64_t>(doubleTime * timeScale), timeScale, Valid);
}
MediaTime MediaTime::createWithFloat(float floatTime, int32_t timeScale)
{
if (floatTime != floatTime)
return invalidTime();
if (std::isinf(floatTime))
return std::signbit(floatTime) ? negativeInfiniteTime() : positiveInfiniteTime();
if (floatTime > std::numeric_limits<int64_t>::max())
return positiveInfiniteTime();
if (floatTime < std::numeric_limits<int64_t>::min())
return negativeInfiniteTime();
while (floatTime * timeScale > std::numeric_limits<int64_t>::max())
timeScale /= 2;
return MediaTime(static_cast<int64_t>(floatTime * timeScale), timeScale, Valid);
}
MediaTime MediaTime::operator-(const MediaTime& rhs) const
{
if (rhs.isInvalid() || isInvalid())
return invalidTime();
if (rhs.isIndefinite() || isIndefinite())
return indefiniteTime();
if (isPositiveInfinite() && rhs.isPositiveInfinite())
return invalidTime();
if (isNegativeInfinite() && rhs.isNegativeInfinite())
return invalidTime();
if (isPositiveInfinite() || rhs.isNegativeInfinite())
return positiveInfiniteTime();
if (isNegativeInfinite() || rhs.isPositiveInfinite())
return negativeInfiniteTime();
if (hasDoubleValue() && rhs.hasDoubleValue())
return MediaTime::createWithDouble(m_timeValueAsDouble - rhs.m_timeValueAsDouble);
MediaTime a = *this;
MediaTime b = rhs;
if (a.hasDoubleValue())
a.setTimeScale(DefaultTimeScale);
else if (b.hasDoubleValue())
b.setTimeScale(DefaultTimeScale);
int32_t commonTimeScale;
if (!leastCommonMultiple(this->m_timeScale, rhs.m_timeScale, commonTimeScale) || commonTimeScale > MaximumTimeScale)
commonTimeScale = MaximumTimeScale;
a.setTimeScale(commonTimeScale);
b.setTimeScale(commonTimeScale);
while (!safeSub(a.m_timeValue, b.m_timeValue, a.m_timeValue)) {
if (commonTimeScale == 1)
return a.m_timeValue > 0 ? positiveInfiniteTime() : negativeInfiniteTime();
commonTimeScale /= 2;
a.setTimeScale(commonTimeScale);
b.setTimeScale(commonTimeScale);
}
return a;
}
MediaTime MediaTime::operator*(int32_t rhs) const
{
if (isInvalid())
return invalidTime();
if (isIndefinite())
return indefiniteTime();
if (!rhs)
return zeroTime();
if (isPositiveInfinite()) {
if (rhs > 0)
return positiveInfiniteTime();
return negativeInfiniteTime();
}
if (isNegativeInfinite()) {
if (rhs > 0)
return negativeInfiniteTime();
return positiveInfiniteTime();
}
MediaTime a = *this;
if (a.hasDoubleValue()) {
a.m_timeValueAsDouble *= rhs;
return a;
}
while (!safeMultiply(a.m_timeValue, rhs, a.m_timeValue)) {
if (a.m_timeScale == 1)
return signum(a.m_timeValue) == signum(rhs) ? positiveInfiniteTime() : negativeInfiniteTime();
a.setTimeScale(a.m_timeScale / 2);
}
return a;
}
MediaTime MediaTime::operator-(const MediaTime& rhs) const
{
if (rhs.isInvalid() || isInvalid())
return invalidTime();
if (rhs.isIndefinite() || isIndefinite())
return indefiniteTime();
if (isPositiveInfinite()) {
if (rhs.isPositiveInfinite())
return invalidTime();
return positiveInfiniteTime();
}
if (isNegativeInfinite()) {
if (rhs.isNegativeInfinite())
return invalidTime();
return negativeInfiniteTime();
}
int32_t commonTimeScale;
if (!leastCommonMultiple(this->m_timeScale, rhs.m_timeScale, commonTimeScale) || commonTimeScale > MaximumTimeScale)
commonTimeScale = MaximumTimeScale;
MediaTime a = *this;
MediaTime b = rhs;
a.setTimeScale(commonTimeScale);
b.setTimeScale(commonTimeScale);
while (!safeSub(a.m_timeValue, b.m_timeValue, a.m_timeValue)) {
if (commonTimeScale == 1)
return a.m_timeValue > 0 ? positiveInfiniteTime() : negativeInfiniteTime();
commonTimeScale /= 2;
a.setTimeScale(commonTimeScale);
b.setTimeScale(commonTimeScale);
}
return a;
}
MediaTime MediaTime::operator-() const
{
if (isInvalid())
return invalidTime();
if (isIndefinite())
return indefiniteTime();
if (isPositiveInfinite())
return negativeInfiniteTime();
if (isNegativeInfinite())
return positiveInfiniteTime();
MediaTime negativeTime = *this;
if (negativeTime.hasDoubleValue())
negativeTime.m_timeValueAsDouble = -negativeTime.m_timeValueAsDouble;
else
negativeTime.m_timeValue = -negativeTime.m_timeValue;
return negativeTime;
}
