/// <summary>
/// Sets a media sink for the media item. A media sink is an object that consumes the data from one or more streams.
/// </summary>
/// <param name="mediaItem">A valid IMFPMediaItem instance.</param>
/// <param name="streamIndex">Zero-based index of a streamIndex on the media source.</param>
/// <param name="activate">An instance of an activation object that creates the media sink.</param>
/// <returns>If this function succeeds, it returns the S_OK member. Otherwise, it returns another HResult's member that describe the error.</returns>
public static HResult SetStreamSink(this IMFPMediaItem mediaItem, int streamIndex, IMFActivate activate)
{
if (mediaItem == null)
{
throw new ArgumentNullException("mediaItem");
}
return(mediaItem.SetStreamSink(streamIndex, activate));
}
/// <summary>
/// Sets the start and stop time for the media item.
/// </summary>
/// <param name="mediaItem">A valid IMFPMediaItem instance.</param>
/// <param name="startValue">Start position.</param>
/// <param name="stopValue">Stop position.</param>
/// <returns>If this function succeeds, it returns the S_OK member. Otherwise, it returns another HResult's member that describe the error.</returns>
public static HResult SetStartStopPosition(this IMFPMediaItem mediaItem, TimeSpan startValue, TimeSpan stopValue)
{
if (mediaItem == null)
{
throw new ArgumentNullException("mediaItem");
}
using (PropVariant resultStart = new PropVariant(startValue.Ticks), resultStop = new PropVariant(stopValue.Ticks))
{
return(mediaItem.SetStartStopPosition(Guid.Empty, resultStart, Guid.Empty, resultStop));
}
}
/// <summary>
/// Gets the duration of the media item.
/// </summary>
/// <param name="mediaItem">A valid IMFPMediaItem instance.</param>
/// <param name="durationValue">Receives the duration.</param>
/// <returns>If this function succeeds, it returns the S_OK member. Otherwise, it returns another HResult's member that describe the error.</returns>
public static HResult GetDuration(this IMFPMediaItem mediaItem, out TimeSpan durationValue)
{
if (mediaItem == null)
{
throw new ArgumentNullException("mediaItem");
}
using (PropVariant result = new PropVariant())
{
HResult hr = mediaItem.GetDuration(Guid.Empty, result);
durationValue = hr.Succeeded() ? TimeSpan.FromTicks((long)result.GetULong()) : default(TimeSpan);
return(hr);
}
}
/// <summary>
/// Gets the start and stop times for the media item.
/// </summary>
/// <param name="mediaItem">A valid IMFPMediaItem instance.</param>
/// <param name="startValue">Receives the start position.</param>
/// <param name="stopValue">Receives the stop position.</param>
/// <returns>If this function succeeds, it returns the S_OK member. Otherwise, it returns another HResult's member that describe the error.</returns>
public static HResult GetStartStopPosition(this IMFPMediaItem mediaItem, out TimeSpan startValue, out TimeSpan stopValue)
{
if (mediaItem == null)
{
throw new ArgumentNullException("mediaItem");
}
using (PropVariant resultStart = new PropVariant(), resultStop = new PropVariant())
{
HResult hr = mediaItem.GetStartStopPosition(Guid.Empty, resultStart, Guid.Empty, resultStop);
if (hr.Succeeded())
{
startValue = TimeSpan.FromTicks((long)resultStart.GetULong());
stopValue = TimeSpan.FromTicks((long)resultStop.GetULong());
}
else
{
startValue = default(TimeSpan);
stopValue = default(TimeSpan);
}
return(hr);
}
}
/// <summary>
/// Creates a media item from an object.
/// </summary>
/// <param name="mediaPlayer">A valid IMFPMediaPlayer instance.</param>
/// <param name="mediaSink">An instance of a byte streamIndex.</param>
/// <param name="userData">Application-defined value to store in the media item.</param>
/// <param name="mediaItem">Receives an instance of a IMFPMediaItem interface.</param>
/// <returns>If this function succeeds, it returns the S_OK member. Otherwise, it returns another HResult's member that describe the error.</returns>
public static HResult CreateMediaItemFromObject(this IMFPMediaPlayer mediaPlayer, IMFByteStream byteStream, IntPtr userData, out IMFPMediaItem mediaItem)
{
if (byteStream == null)
{
throw new ArgumentNullException("mediaSink");
}
return(mediaPlayer.CreateMediaItemFromObject(byteStream, true, userData, out mediaItem));
}
