public HResult Seek(MFByteStreamSeekOrigin SeekOrigin,
long llSeekOffset,
MFByteStreamSeekingFlags dwSeekFlags,
out long pqwCurrentPosition)
{
throw new NotImplementedException();
}
/// <summary>
/// Moves the current position in the stream by a specified offset.
/// </summary>
/// <param name="seekOrigin">Specifies the origin of the seek as a member of the <see cref="MFByteStreamSeekOrigin"/> enumeration. The offset is calculated relative to this position.</param>
/// <param name="seekOffset">Specifies the new position, as a byte offset from the seek origin.</param>
/// <param name="cancelPendingIO">Specifies whether all pending I/O requests are canceled after the seek request completes successfully.</param>
/// <returns>The new position after the seek.</returns>
public long Seek(MFByteStreamSeekOrigin seekOrigin, long seekOffset, bool cancelPendingIO)
{
long v;
MediaFoundationException.Try(SeekNative(seekOrigin, seekOffset, cancelPendingIO, out v), InterfaceName,
"Seek");
return(v);
}
//TODO: Provide a better implementation for the BeginWrite/EndWrite methods
/// <summary>
/// Moves the current position in the stream by a specified offset.
/// </summary>
/// <param name="seekOrigin">Specifies the origin of the seek as a member of the <see cref="MFByteStreamSeekOrigin"/> enumeration. The offset is calculated relative to this position.</param>
/// <param name="seekOffset">Specifies the new position, as a byte offset from the seek origin.</param>
/// <param name="cancelPendingIO">Specifies whether all pending I/O requests are canceled after the seek request completes successfully.</param>
/// <param name="currentPosition">Receives the new position after the seek.</param>
/// <returns>The new position after the seek.</returns>
public unsafe int SeekNative(MFByteStreamSeekOrigin seekOrigin, long seekOffset, bool cancelPendingIO, out long currentPosition)
{
// ReSharper disable once InconsistentNaming
const int MFBYTESTREAM_SEEK_FLAG_CANCEL_PENDING_IO = 0x00000001;
int flags = cancelPendingIO ? MFBYTESTREAM_SEEK_FLAG_CANCEL_PENDING_IO : 0x0;
fixed(void *p = ¤tPosition)
{
return(InteropCalls.CalliMethodPtr(UnsafeBasePtr, (int)seekOrigin, seekOffset, flags, p,
((void **)(*(void **)UnsafeBasePtr))[15]));
}
}
//TODO: Provide a better implementation for the BeginWrite/EndWrite methods
/// <summary>
/// Moves the current position in the stream by a specified offset.
/// </summary>
/// <param name="seekOrigin">Specifies the origin of the seek as a member of the <see cref="MFByteStreamSeekOrigin"/> enumeration. The offset is calculated relative to this position.</param>
/// <param name="seekOffset">Specifies the new position, as a byte offset from the seek origin.</param>
/// <param name="cancelPendingIO">Specifies whether all pending I/O requests are canceled after the seek request completes successfully.</param>
/// <param name="currentPosition">Receives the new position after the seek.</param>
/// <returns>The new position after the seek.</returns>
public unsafe int SeekNative(MFByteStreamSeekOrigin seekOrigin, long seekOffset, bool cancelPendingIO, out long currentPosition)
{
// ReSharper disable once InconsistentNaming
const int MFBYTESTREAM_SEEK_FLAG_CANCEL_PENDING_IO = 0x00000001;
int flags = cancelPendingIO ? MFBYTESTREAM_SEEK_FLAG_CANCEL_PENDING_IO : 0x0;
fixed (void* p = ¤tPosition)
{
return InteropCalls.CalliMethodPtr(UnsafeBasePtr, (int) seekOrigin, seekOffset, flags, p,
((void**) (*(void**) UnsafeBasePtr))[15]);
}
}
/// <summary>
/// Moves the current position in the stream by a specified offset.
/// </summary>
/// <param name="seekOrigin">Specifies the origin of the seek as a member of the <see cref="MFByteStreamSeekOrigin"/> enumeration. The offset is calculated relative to this position.</param>
/// <param name="seekOffset">Specifies the new position, as a byte offset from the seek origin.</param>
/// <param name="cancelPendingIO">Specifies whether all pending I/O requests are canceled after the seek request completes successfully.</param>
/// <returns>The new position after the seek.</returns>
public long Seek(MFByteStreamSeekOrigin seekOrigin, long seekOffset, bool cancelPendingIO)
{
long v;
MediaFoundationException.Try(SeekNative(seekOrigin, seekOffset, cancelPendingIO, out v), InterfaceName,
"Seek");
return v;
}
