detectSoundlevel-spike/sourceCode/trunk/Code/CoreAudio/Interfaces/IConnector.cs

// -----------------------------------------
// SoundScribe (TM) and related software.
// 
// Copyright (C) 2007-2011 Vannatech
// http://www.vannatech.com
// All rights reserved.
// 
// This source code is subject to the MIT License.
// http://www.opensource.org/licenses/mit-license.php
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
// -----------------------------------------

using System;
using System.Runtime.InteropServices;
using Vannatech.CoreAudio.Enumerations;

namespace Vannatech.CoreAudio.Interfaces
{
    /// <summary>
	/// Represents a point of connection between components.
    /// </summary>
    /// <remarks>
	/// MSDN Reference: http://msdn.microsoft.com/en-us/library/dd371048.aspx
    /// </remarks>
	public partial interface IConnector
    {
        /// <summary>
        /// Gets the type of this connector.
        /// </summary>
        /// <param name="connectorType">Receives the connector type.</param>
        /// <returns>An HRESULT code indicating whether the operation succeeded of failed.</returns>
        [PreserveSig]
        int GetType(
            [Out] [MarshalAs(UnmanagedType.I4)] out ConnectorType connectorType);

        /// <summary>
        /// Gets the direction of data flow through this connector.
        /// </summary>
        /// <param name="dataFlow">Receives the data-flow direction.</param>
        /// <returns>An HRESULT code indicating whether the operation succeeded of failed.</returns>
        [PreserveSig]
        int GetDataFlow(
			[Out] [MarshalAs(UnmanagedType.I4)] out DataFlow dataFlow);

		/// <summary>
		/// Connects this connector to a connector in another device topology object.
		/// </summary>
		/// <param name="connector">The connector in the other device topology.</param>
		/// <returns>An HRESULT code indicating whether the operation succeeded of failed.</returns>
		[PreserveSig]
		int ConnectTo(
			[In] [MarshalAs(UnmanagedType.Interface)] IConnector connector);

		/// <summary>
		/// Disconnects this connector from another connector.
		/// </summary>
		/// <returns>An HRESULT code indicating whether the operation succeeded of failed.</returns>
		[PreserveSig]
		int Disconnect();

        /// <summary>
        /// Indicates whether this connector is connected to another connector.
        /// </summary>
        /// <param name="isConnected">Receives the connection state.</param>
        /// <returns>An HRESULT code indicating whether the operation succeeded of failed.</returns>
        [PreserveSig]
        int IsConnected(
			[Out] [MarshalAs(UnmanagedType.Bool)] out bool isConnected);

        /// <summary>
        /// Gets the connector to which this connector is connected.
        /// </summary>
        /// <param name="connector">Receives the connector that the current object is connected to.</param>
        /// <returns>An HRESULT code indicating whether the operation succeeded of failed.</returns>
        [PreserveSig]
        int GetConnectedTo(
            [Out] [MarshalAs(UnmanagedType.Interface)] out IConnector connector);

		/// <summary>
		/// Gets the global ID of the connector, if any, that this connector is connected to.
		/// </summary>
		/// <param name="connectorId">Receives the other connectors ID.</param>
		/// <returns>An HRESULT code indicating whether the operation succeeded of failed.</returns>
		[PreserveSig]
		int GetConnectorIdConnectedTo(
			[Out] [MarshalAs(UnmanagedType.LPWStr)] out string connectorId);

		/// <summary>
		/// Gets the device identifier of the audio device, if any, that this connector is connected to.
		/// </summary>
		/// <param name="deviceId">Receives a string that contains the device identifier of the connected device.</param>
		/// <returns>An HRESULT code indicating whether the operation succeeded of failed.</returns>
		[PreserveSig]
		int GetDeviceIdConnectedTo(
			[Out] [MarshalAs(UnmanagedType.LPWStr)] out string deviceId);
    }
}