using System;

using Delta.Multimedia.BaseOpenAL;

using Delta.Utilities;



namespace Delta.Multimedia.OpenTK

{

	/// <summary>

	/// OpenTK music

	/// Sample code for implementing

	/// -> http://www.opentk.com/node/1705

	/// </summary>

	internal class OpenTKMusic : NativeMusic

	{

		#region State (Public)

		/// <summary>

		/// The state of the music, just returning the property of the OggMusicData.

		/// </summary>

		public override MediaState State

		{

			get

			{

				return nativeMusicData.State;

			}

			protected set

			{

				base.State = value;

			}

		}

		#endregion



		#region Private



		#region nativeMusicData (Private)

		/// <summary>

		/// Music handle

		/// </summary>

		private OggMusicData nativeMusicData;

		#endregion



		#endregion



		#region Constructors

		/// <summary>

		/// Create OpenTK music

		/// </summary>

		/// <param name="parentMusic">Parent music instance.</param>

		public OpenTKMusic(Music parentMusic)

			: base(parentMusic)

		{

		}

		#endregion



		#region LoadNativeData (Public)

		/// <summary>

		/// Load content data

		/// </summary>

		/// <param name="filename">Filename</param>

		/// <returns>True if loading succeeded, otherwise False.</returns>

		public override bool LoadNativeData(string filename)

		{

			try

			{

				nativeMusicData = new OggMusicData(this, filename);

			}

			catch (Exception)

			{

				return false;

			}



			return true;

		}

		#endregion



		#region Dispose (Public)

		/// <summary>

		/// Dispose data

		/// </summary>

		public override void Dispose()

		{

			if (nativeMusicData != null)

			{

				nativeMusicData.Dispose();

				nativeMusicData = null;

			}

		}

		#endregion



		#region Methods (Private)



		#region SetVolume

		/// <summary>

		/// Set the volume of the native OpenTK music.

		/// </summary>

		/// <param name="setVolume">Volume to set.</param>

		protected override void SetVolume(float setVolume)

		{

			volume = setVolume;

			nativeMusicData.Volume = volume;

		}

		#endregion



		#region PlayNative

		/// <summary>

		/// Play native

		/// </summary>

		protected override void PlayNative()

		{

			try

			{

				nativeMusicData.Play();

			}

			catch (Exception ex)

			{

				Log.Warning("Failed to play OpenTKMusic " + Parent.Name + ": " + ex);

			}

		}

		#endregion



		#region UpdateNative

		/// <summary>

		/// Updates the Music

		/// </summary>

		protected override void UpdateNative()

		{

			if (nativeMusicData != null)

			{

				nativeMusicData.Update(ref elapsedPlayTime);

			}

		}

		#endregion



		#region StopNative

		/// <summary>

		/// Stop native

		/// </summary>

		protected override void StopNative()

		{

			if (nativeMusicData != null)

			{

				nativeMusicData.Stop();

			}

		}

		#endregion



		#endregion

	}

}