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Update Stream.cs to support Pa_GetStreamTime #1

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Update Stream.cs to support Pa_GetStreamTime #1

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25 changes: 25 additions & 0 deletions PortAudioSharp/Stream.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -67,6 +67,9 @@ IntPtr userData // Originally `void *`
[return: MarshalAs(UnmanagedType.I4)]
public static extern ErrorCode Pa_IsStreamActive(IntPtr stream); // `PaStream *`

[DllImport(PortAudioDLL)]
public static extern double Pa_GetStreamTime(IntPtr stream); // `PaStream *`

[DllImport(PortAudioDLL)]
public static extern double Pa_GetStreamCpuLoad(IntPtr stream); // `PaStream *`
}
Expand Down Expand Up @@ -388,6 +391,28 @@ public bool IsActive
}
}

/// <summary>
/// Returns the current time in seconds for a stream according to the same clock
/// used to generate callback PaStreamCallbackTimeInfo timestamps. The time values
/// are monotonically increasing and have unspecified origin.
///
/// Pa_GetStreamTime returns valid time values for the entire life of the stream,
/// from when the stream is opened until it is closed. Starting and stopping the
/// stream does not affect the passage of time returned by Pa_GetStreamTime.
///
/// This time may be used for synchronizing other events to the audio stream,
/// for example synchronizing audio to MIDI.
///
/// @return
/// The stream's current time in seconds, or 0 if an error occurred.
///
/// @see PaTime, PaStreamCallback, PaStreamCallbackTimeInfo
/// </summary>
public double Time
{
get => Native.Pa_GetStreamTime(streamPtr);
}

/// <summary>
/// Retrieve CPU usage information for the specified stream.
/// The "CPU Load" is a fraction of total CPU time consumed by a callback stream's
Expand Down