dshow/Core/IMediaSeeking.cs

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namespace dshow.Core
{
	using System;
	using System.Runtime.InteropServices;

	// IMediaSeeking interface
	//
	// Contains methods for seeking to a position within a stream,
	// and for setting the playback rate
	//
	[ComImport,
	Guid("36B73880-C2C8-11CF-8B46-00805F6CEF60"),
	InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
	public interface IMediaSeeking
	{
		// Retrieves all the seeking capabilities of the stream
		[PreserveSig]
		int GetCapabilities(
			out SeekingCapabilities pCapabilities);

		// Queries whether a stream has specified seeking capabilities
		[PreserveSig]
		int CheckCapabilities(
			[In, Out] ref SeekingCapabilities pCapabilities);

		// Determines whether a specified time format is supported
		[PreserveSig]
		int IsFormatSupported(
			[In] ref Guid pFormat);

		// Retrieves the preferred time format for the stream
		[PreserveSig]
		int QueryPreferredFormat(
			[Out] out Guid pFormat);

		// Retrieves the current time format
		[PreserveSig]
		int GetTimeFormat(
			[Out] out Guid pFormat);

		// Determines whether a specified time format
		// is the format currently in use
		[PreserveSig]
		int IsUsingTimeFormat(
			[In] ref Guid pFormat);

		// Sets the time format
		[PreserveSig]
		int SetTimeFormat(
			[In] ref Guid pFormat);

		// Retrieves the duration of the stream
		[PreserveSig]
		int GetDuration(
			out long pDuration);

		// Retrieves the time at which the playback will stop,
		// relative to the duration of the stream
		[PreserveSig]
		int GetStopPosition(