OpenViBE forum

Posted: **Fri Feb 11, 2022 7:21 am**

Hi,

OV 3.0 replaced the ITimeArithmetics class with CTime.

I have this old code that coverts samples (positions in the signal represented by samples) to OV own representation of time:

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uint64_t l_ui64SampleStartTime = m_ui64StartTimeBase + ITimeArithmetics::sampleCountToTime(m_ui64OutputSamplingFrequency, m_ui64TotalSampleCount);
uint64_t l_ui64SampleEndTime = m_ui64StartTimeBase + ITimeArithmetics::sampleCountToTime(m_ui64OutputSamplingFrequency, m_ui64TotalSampleCount + m_ui32OutputSampleCountPerSentBlock);

So it uses the sampleCountToTime method. In the release notes of OV 3.0 (scroll down) it was not specified which was the equivalent in the new class CTime. I think it is the constructor of CTime. So I re-wrote the code like this:

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const uint64_t l_ui64SampleStartTime = CTime(m_ui64OutputSamplingFrequency, m_ui64TotalSampleCount).time();
const uint64_t l_ui64SampleEndTime =   CTime(m_ui64OutputSamplingFrequency, m_ui64TotalSampleCount + m_ui32OutputSampleCountPerSentBlock).time();

This is to show other users how I did it and maybe someone from the OV can comment/confirm.

Posted: **Fri Feb 11, 2022 8:26 am**

Hi toncho11,

Thanks for you message and the clarification on this modification.

You are right with the equivalent use of CTime. For info, the CTime constructor is defined as follow:

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CTime(const uint64_t sampling, const uint64_t sampleCount);

CTime::time() then returns the time value in the usual OpenViBE 64 bits format.

This change was made in order to regroup all time related in functions in a class instead of calling static functions.

Cheers,
Thomas

OpenViBE forum

Porting from ITimeArithmetics to CTime

Porting from ITimeArithmetics to CTime

Re: Porting from ITimeArithmetics to CTime