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using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace Tango.RemoteDesktop
{
/// <summary>
/// Represents a bitmap comparison engine which returns a difference object of type <see cref="TFrame"/> between a previous and current bitmaps.
/// </summary>
/// <typeparam name="TFrame">Type of frame</typeparam>
public interface IBitmapComparer<TFrame> where TFrame : IFrame
{
/// <summary>
/// Creates the difference result from two bitmaps.
/// </summary>
/// <param name="previousBitmap">The previous bitmap.</param>
/// <param name="currentBitmap">The current bitmap.</param>
/// <returns></returns>
BitmapComparerResult<TFrame> CreateDifference(Bitmap previousBitmap, Bitmap currentBitmap);
/// <summary>
/// When max number of differences reached, the comparer will immediately return the current difference frame.
/// This should enforce the screen capture engine to report 'No Difference Available'.
/// The value of null (default) means infinite.
/// </summary>
long? MaxDifferencesThrow { get; set; }
}
}
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