public static extern int PropVariantClear(ref PropertyVariant propertyVariant);
public static extern int PropVariantClear(ref PropertyVariant propertyVariant);
private void SetPosition(long value)
{
if (CanSeek)
{
lock (_lockObj)
{
value -= (value % WaveFormat.BlockAlign);
long hnsPos = BytesToNanoSecond100Units(value);
var propertyVariant = new PropertyVariant {HValue = hnsPos, DataType = VarEnum.VT_I8};
_reader.SetCurrentPosition(Guid.Empty, propertyVariant);
_decoderBufferCount = 0;
_decoderBufferOffset = 0;
_position = value;
_positionChanged = true;
}
}
}
/// <summary>
/// Seeks to a new position in the media source.
/// </summary>
public void SetCurrentPosition(Guid guidTimeFormat, PropertyVariant position)
{
MediaFoundationException.Try(SetCurrentPositionNative(guidTimeFormat, position), c, "SetCurrentPosition");
}
/// <summary>
/// Seeks to a new position in the media source.
/// </summary>
/// <returns>HRESULT</returns>
public unsafe int SetCurrentPositionNative(Guid guidTimeFormat, PropertyVariant position)
{
return InteropCalls.CalliMethodPtr(_basePtr, &guidTimeFormat, &position, ((void**)(*(void**)_basePtr))[8]);
}
/// <summary>
/// Gets an attribute from the underlying media source.
/// </summary>
/// <returns>HRESULT</returns>
public unsafe int GetPresentationAttributeNative(int streamIndex, Guid guidAttribute, out PropertyVariant variant)
{
variant = default(PropertyVariant);
fixed (void* ptr = &variant)
{
return InteropCalls.CalliMethodPtr(_basePtr, streamIndex, &guidAttribute, ptr, ((void**)(*(void**)_basePtr))[12]);
}
}
internal static unsafe int CalliMethodPtr(void* _basePtr, Guid* guid, PropertyVariant* propertyVariant, NativeBool* pr, void* p)
{
throw new NotImplementedException();
}
private static extern int PropVariantClear(ref PropertyVariant propertyVariant);
private static extern int PropVariantClear(ref PropertyVariant propertyVariant);
private void SetPosition(long value)
{
if (CanSeek)
{
lock (_lockObj)
{
long hnsPos = (10000000L * value) / WaveFormat.BytesPerSecond;
var propertyVariant = new PropertyVariant {HValue = hnsPos, DataType = VarEnum.VT_I8};
_reader.SetCurrentPosition(Guid.Empty, propertyVariant);
_decoderBufferCount = 0;
_decoderBufferOffset = 0;
_position = value;
}
}
}
