/// <summary>
/// Setup the IMediaSeeking interface
/// </summary>
protected void SetMediaSeekingInterface(IMediaSeeking mediaSeeking)
{
m_mediaSeeking = mediaSeeking;
if (mediaSeeking == null)
{
CurrentPositionFormat = MediaPositionFormat.None;
Duration = 0;
return;
}
/* Get our prefered DirectShow TimeFormat */
Guid preferedFormat = ConvertPositionFormat(PreferedPositionFormat);
/* Attempt to set the time format */
mediaSeeking.SetTimeFormat(preferedFormat);
Guid currentFormat;
/* Gets the current time format
* we may not have been successful
* setting our prefered format */
mediaSeeking.GetTimeFormat(out currentFormat);
/* Set our property up with the right format */
CurrentPositionFormat = ConvertPositionFormat(currentFormat);
SetDuration();
}
/// <summary>
/// Check Format related functions
/// </summary>
void TestFormats()
{
int hr;
Guid pFormat;
// Query to see what the preferred time format is
hr = m_ims.QueryPreferredFormat(out pFormat);
Marshal.ThrowExceptionForHR(hr);
// Is the preferred format supported? Certainly hope so.
hr = m_ims.IsFormatSupported(pFormat);
Marshal.ThrowExceptionForHR(hr);
// Might return and S_ code
Debug.Assert(hr == 0);
// Read the current time format
hr = m_ims.GetTimeFormat(out pFormat);
Marshal.ThrowExceptionForHR(hr);
// See if the current format is the one we are using.
// Better be.
hr = m_ims.IsUsingTimeFormat(pFormat);
Marshal.ThrowExceptionForHR(hr);
// Try setting the format to the current value (the
// only one we are sure is supported).
hr = m_ims.SetTimeFormat(pFormat);
Marshal.ThrowExceptionForHR(hr);
}
/// <summary>
/// Setup the IMediaSeeking interface
/// </summary>
protected void SetMediaSeekingInterface(IMediaSeeking mediaSeeking)
{
m_mediaSeeking = mediaSeeking;
if (mediaSeeking == null)
{
CurrentPositionFormat = MediaPositionFormat.None;
Duration = 0;
return;
}
/* Get our prefered DirectShow TimeFormat */
Guid preferedFormat = ConvertPositionFormat(PreferedPositionFormat);
/* Attempt to set the time format */
mediaSeeking.SetTimeFormat(preferedFormat);
Guid currentFormat;
/* Gets the current time format
* we may not have been successful
* setting our prefered format */
mediaSeeking.GetTimeFormat(out currentFormat);
/* Set our property up with the right format */
CurrentPositionFormat = ConvertPositionFormat(currentFormat);
SetDuration();
}