using UnityEngine;
using System;
using System.Runtime.InteropServices;

namespace SLAMUVC
{
	[StructLayout(LayoutKind.Sequential, Pack = 4)]
	public struct UVCCtrlInfo
	{
		public string name;
		public Int32 current;
		public Int32 min;
		public Int32 max;
		public Int32 def;

		public override string ToString()
		{
			return $"{base.ToString()}(name={name},min={min},max={max},def={def},current={current})";
		}
	}

	[System.Serializable]
	public class UVCCtrl
	{
		public string name;
		public bool isAuto;
		public bool isEnable;
		public int[] limit;
		public int value;
	}
	[System.Serializable]
	public class UVCCtrlWrapper
	{
		public UVCCtrl[] uvcCtrls;
	}
	public enum CameraFormat
	{
		MJPEG,
		YUV,
	}
	public enum CameraMirror
	{
		NONE,
		HORIZONTAL,//ˮƽ��ת
		VERTICAL//��ֱ��ת
	}
	public enum UVCCameraPixelFormat
	{
		PIXEL_FORMAT_RAW,
		PIXEL_FORMAT_YUV,
		PIXEL_FORMAT_NV12, // one format of YUV420SemiPlanar
		PIXEL_FORMAT_NV21, // one format of YUV420SemiPlanar
		PIXEL_FORMAT_RGB,
		PIXEL_FORMAT_RGB565,
		PIXEL_FORMAT_RGBX
	}
	public enum CameraStatus
	{
		Stopped = 0,                // 摄像头停止
		Started = 1,                // 摄像头启动
		Connecting = 2,             // 连接设备中
		Active = 3,                 // UI 激活
		Idle = 4,                   // UI 空闲
		Scanning = 5,               // 硬件扫描中
		NoDevice = 6,               // 无设备
		ResolutionChanged = 7,      // 分辨率修改
		RenderUpdate = 8,           // 渲染更新
	}
	//UVC������
	public abstract class UVCInterface : MonoBehaviour
	{
		// 初始化相机
		public abstract void InitCamera(int width, int height);

		// 打开相机
		public abstract void OpenCamera();

		// 关闭相机
		public abstract void CloseCamera();

		// 改变相机分辨率
		public abstract void ChangeCameraInfo(int width, int height);

		// 改变相机分辨率回调
		public abstract void ChangeCameraInfoCallback(int width, int height);
		// 获取支持的分辨率列表
		public abstract string[] GetSupportedResolutions();

		// 获取 UVC 控制列表（如亮度、对比度等控制功能）
		public abstract string GetUvcCtrlList();

		// 控制亮度
		public abstract void SetBrightness(int value);

		// 控制对比度
		public abstract void SetContrast(int value);

		// 设置 UVC 控制功能的值（如亮度、对比度）
		public abstract int SetCtrlValue(string type, int value);

		//
		public abstract void FlipHorizontally();

		//
		public abstract void FlipVertically();

		//重置参数
		public abstract void resetControlParams();

		public abstract bool GetIsPreviewing();

		public abstract void OnTextureUpdate(int width, int height, bool bUpdate);


		// 相机纹理
		public abstract Texture2D CameraTexture { get; }

		// UVC属性
		public abstract UVCCtrl[] UVCCtrls { get; }

		// 过度分辨率
		public abstract int[] tempCameraSize { get; }
		/// <summary>
		/// 摄像头权限成功事件
		/// </summary>
		public event Action systemCameraPermissionHandle;

		/// <summary>
		/// 摄像头纹理更新事件
		/// </summary>
		public event Action cameraTextureHandle;

		/// <summary>
		/// 触发摄像头权限成功事件（供子类调用）
		/// </summary>
		public void OnCameraPermissionGranted()
		{
			systemCameraPermissionHandle?.Invoke();
		}

		/// <summary>
		/// 触发摄像头纹理更新事件（供子类调用）
		/// </summary>
		public void OnCameraTextureUpdated()
		{
			cameraTextureHandle?.Invoke();
		}

	}
}