using System;
using TUCAMAPI;

namespace TUCamera
{
    public class TUCameraVideoSave : TUCameraIFrameProcess
    {
        public event VideoSaveHandler m_videoSaveHandler;
        private TUCamera m_camera;
        private UInt64 m_duration = 0; // 视频拍摄持续时间
        private DateTimeTools m_tools = null;
        private string m_fileName;
        private FrameProcesserState m_state = FrameProcesserState.STOP;

        private static int m_videoSave = 0;

        public TUCameraVideoSave(TUCamera camera, VideoSaveHandler videoSaveHandler, string fileName, UInt64 duration)
        {
            m_camera = camera;
            m_fileName = fileName;
            m_duration = duration;
            m_videoSaveHandler = videoSaveHandler;
            m_tools = new DateTimeTools(m_duration);
        }

		public void DoProcess(ref TUCAM_FRAME frame)
        {
			if (m_state != FrameProcesserState.PLAY)
			{
				return;
			}

            if (m_tools.Timeout())
            {
                Stop();
            }
            else
            {
                m_camera.RecAppendFrame(ref frame);
            }
        }

        public FrameProcesserState GetStatus()
        {
            return m_state;
        }

        public void Start()
        {
            if (m_videoSave != 0)
            {
                throw new TUCameraException("In the video recording, please hold on");
            }
            m_videoSave = 1;
            if (GetStatus() == FrameProcesserState.STOP)
            {
                m_camera.RecStart(m_fileName);
                m_state = FrameProcesserState.PLAY;
            }
        }

        public void Stop()
        {
            if (m_videoSave != 0)
            {
                m_videoSave = 0;
                m_camera.RecStop();
                m_state = FrameProcesserState.STOP;

                // 返回委托回调
                //m_camera.CallbackVideoSave(true, m_fileName);
                m_videoSaveHandler(true, m_fileName);

                m_camera.StopWaitForFrame();
            }
		}

        public void Pause()
        {
            m_state = FrameProcesserState.PAUSE;
        }

        public void Resume()
        {
            m_state = FrameProcesserState.PLAY;
        }
    }
}