/ContentSystem/Multimedia/VideoData.cs

using Delta.Engine;



namespace Delta.ContentSystem.Multimedia

{

	/// <summary>

	/// Video data class, does not contain any native data as this is usually

	/// done with some external library or platform module that handles

	/// everything from loading to displaying the video for us.

	/// </summary>

	public class VideoData : Content

	{

		#region Get (Static)

		/// <summary>

		/// Get and load content based on the content name. This method makes sure

		/// we do not load the same content twice (the constructor is protected).

		/// </summary>

		/// <param name="contentName">Content name we want to load, this is

		/// passed onto the Content System, which will do the actual loading with

		/// help of the Load method in this class.</param>

		/// <returns>The loaded Content object, always unique for the same

		/// name, this helps comparing data.</returns>

		public static VideoData Get(string contentName)

		{

			return Get<VideoData>(contentName, ContentType.Video);

		}

		#endregion



		#region TimeLength (Public)

		/// <summary>

		/// The length in seconds this video data plays.

		/// </summary>

		public float TimeLength

		{

			get

			{

				return data.TimeLength;

			}

		}

		#endregion



		#region Protected



		#region MemorySize (Protected)

		/// <summary>

		/// Change the memory size from the file size to just a small buffer

		/// that is used by each native implementation.

		/// </summary>

		protected override int MemorySize

		{

			get

			{

				// We probably need at least 2 textures worth of data (times 4 for

				// RGBA), but instead of multiplying by 8 we can assume a compression

				// with about 1:8 is used (e.g. DXT1, PVR4Bpp, etc.).

				return (int)(Settings.Resolution.Width * Settings.Resolution.Height);

			}

		}

		#endregion



		#endregion



		#region Constructors

		/// <summary>

		/// Create base video

		/// </summary>

		/// <param name="contentName">Name of the content.</param>

		public VideoData(string contentName)

			: base(contentName, ContentType.Video)

		{

		}

		#endregion



		#region Methods (Private)



		#region Load

		/// <summary>

		/// Load video content data, does nothing. Only properties are assigned.

		/// No loading happens here (it all happens in Sound), we can obviously

		/// clone all SoundDatas with the same name as they are not loaded here.

		/// Note: If a class is interested in the content reload functionality,

		/// it can just attach itself to the ContentChanged event.

		/// </summary>

		/// <param name="alreadyLoadedNativeData">If we already have native data

		/// loaded, clone it from this instance. Only used if not null. Please

		/// note that this is only used for other objects that had the same

		/// RawFileId and are already loaded and returned true for this method.

		/// </param>

		protected override void Load(Content alreadyLoadedNativeData)

		{

		}

		#endregion



		#endregion

	}

}