protected void UpdateCurrentPosition()
{
if (_mediaSeeking == null)
{
return;
}
//GetCurrentPosition(): Returns stream position.
//Stream position:The current playback position, relative to the content start
long lStreamPos;
double fCurrentPos;
_mediaSeeking.GetCurrentPosition(out lStreamPos); // stream position
fCurrentPos = lStreamPos;
fCurrentPos /= 10000000d;
_currentPos = fCurrentPos;
long lContentStart, lContentEnd;
double fContentStart, fContentEnd;
_mediaSeeking.GetAvailable(out lContentStart, out lContentEnd);
//_mediaSeeking.GetDuration(out lDuration);
//mediaPos.get_Duration(out duration);
fContentStart = lContentStart;
fContentEnd = lContentEnd;
fContentStart /= 10000000d;
fContentEnd /= 10000000d;
//duration=lDuration;
//duration /= 10000000d;
//Log.Info("{0} {1} {2} ({3}) {4} {5}", fCurrentPos, fContentStart, fContentEnd, _currentPos, lDuration,duration);
fContentEnd -= fContentStart;
_duration = fContentEnd;
}
/// <summary>
/// Test the functions that read the current position
/// </summary>
void TestPosition()
{
int hr;
long pCurrent1, pStop1, pDuration1;
long pCurrent2, pStop2;
long pEarliest, pLatest;
// Read the current play position
hr = m_ims.GetCurrentPosition(out pCurrent1);
Marshal.ThrowExceptionForHR(hr);
// Read the current stop position
hr = m_ims.GetStopPosition(out pStop1);
Marshal.ThrowExceptionForHR(hr);
// Read the duraton (probably related to StopPosition - Position
hr = m_ims.GetDuration(out pDuration1);
Marshal.ThrowExceptionForHR(hr);
// Read both current and stop positions
hr = m_ims.GetPositions(out pCurrent2, out pStop2);
Marshal.ThrowExceptionForHR(hr);
// Get the cached range of values
hr = m_ims.GetAvailable(out pEarliest, out pLatest);
Marshal.ThrowExceptionForHR(hr);
// Since we aren't playing, current should be 0, stop &
// duration should be the same (the length of the clip)
Debug.Assert(pCurrent1 == 0, "CurrentPosition");
Debug.Assert(pStop1 == pDuration1, "Stop, Duration");
Debug.Assert(pCurrent1 == pCurrent2, "GetPositions");
Debug.Assert(pStop1 == pStop2, "CurrentPosition stop");
Debug.Assert(pEarliest == pCurrent1, "CurrentPosition stop");
Debug.Assert(pLatest == pStop2, "CurrentPosition stop");
}
