//#define Win

using System.Runtime.InteropServices;

namespace EC.Util.CameraSDK;

/// <summary>
/// linux下 需要安装 opengl
/// </summary>
public class DhPlaySdk
{
    #region Fields

#if Win
    public const string LibSdkPath = @"./libs/dahua/dhplay.dll";
#else
    public const string LibSdkPath = @"./libs/dahua/libdhplay.so";
#endif

    #endregion Fields

    static DhPlaySdk()
    {
    }

    #region struct enum

    public enum LogLevel
    {
        LOG_LevelUnknown = 0, // 未知等级
        LOG_LevelFatal,      // fatal等级，当设置为此等级时，有一种打印输出（fatal）都有输出
        LOG_LevelError,      // error等级，当设置为此等级时，有两种打印输出（fatal，error）都有输出
        LOG_LevelWarn,       // warn等级，当设置为此等级时，有三种打印输出（fatal，error，warn）都有输出
        LOG_LevelInfo,       // info等级，当设置为此等级时，有四种打印输出（fatal，error，warn，info）都有输出
        LOG_LevelTrace,      // Trace等级，当设置为此等级时，有五种打印输出（fatal，error，warn，info，trace）都有输出
        LOG_LevelDebug       // Debug等级，当设置为此等级时，以上六种打印（fatal，error，warn，info，trace，debug）都有输出
    }

    /* 渲染模式 */
    public enum RenderType
    {
        RENDER_NOTSET = 0,              // 未设置
        RENDER_GDI,                     // GDI渲染
        RENDER_X11 = RENDER_GDI,        // 非windows平台X11渲染
        RENDER_DDRAW,                   // ddraw渲染
        RENDER_OPENGL = RENDER_DDRAW,   // 非windows平台opengl渲染
        RENDER_D3D,                     // D3D渲染,默认等同于D3D9渲染
        RENDER_D3D9 = RENDER_D3D,       // D3D9渲染
        RENDER_WGL,                     // windows平台opengl渲染
        RENDER_D3D11                    // D3D11渲染
    }

    #endregion struct enum

    #region PlaySdk

    public static void BuildException(ICameraSdk cameraSdk, int nPort)
    {
        string err = $"DhPlaySdk failed, error code={PLAY_GetLastErrorEx()}";
        throw CameraException.New(cameraSdk.CameraInfo, -1, err);
    }

    [DllImport(LibSdkPath)]
    public static extern bool PLAY_GetFreePort(ref int nPort);

    [DllImport(LibSdkPath)]
    public static extern bool PLAY_ReleasePort(int nPort);

    [DllImport(LibSdkPath)]
    public static extern bool PLAY_SetRenderMode(int nPort, RenderType nMode);

    [DllImport(LibSdkPath)]
    public static extern uint PLAY_GetLastErrorEx();

    [DllImport(LibSdkPath)]
    public static extern uint PLAY_SetPrintLogLevel(LogLevel logLevel);

    [DllImport(LibSdkPath)]
    public static extern bool PLAY_SetStreamOpenMode(int nPort, uint nMode);

    [DllImport(LibSdkPath)]
    public static extern bool PLAY_OpenStream(int nPort, IntPtr pFileHeadBuf, uint nSize, uint nBufPoolSize);

    [DllImport(LibSdkPath)]
    public static extern bool PLAY_Play(int nPort, IntPtr hWnd);

    [DllImport(LibSdkPath)]
    public static extern bool PLAY_InputData(int nPort, IntPtr pBuf, uint nSize);

    [DllImport(LibSdkPath)]
    public static extern bool PLAY_Stop(int nPort);

    [DllImport(LibSdkPath)]
    public static extern bool PLAY_CloseStream(int nPort);

    #endregion PlaySdk
}