/// <summary>
/// C语言SDL程序
/// </summary>
#pragma once
#include <qobject.h>
#include <sdl/SDL.h>

extern "C"
{
#include <libavcodec/avcodec.h>
#include <libavformat/avformat.h>
#include <libswscale/swscale.h>
#include <libavdevice/avdevice.h>
#include <libavutil/opt.h>
#include <libavfilter/avfilter.h>
#include <libavfilter/buffersrc.h>
#include <libavfilter/buffersink.h>
#include <libavutil/imgutils.h>
#include <libavutil/frame.h>
};

class SDL_Window;
class SDL_Renderer;
class SDL_Texture;
class SwsContext;
class AVFrame;
struct _TTF_Font;
class SDL_Rect;

class CSdlProc
{
public:
	CSdlProc();
	~CSdlProc();

public:
	bool Init(void * pWnd, int nVideoWidth, int nVideoHeight, bool bHard);
	void DisplayFrame(AVFrame *pFrame);
	void DisplayFrame(uint8_t *pData, int nWidth, int nHeight);
	void SetRect(int nOffset_x, int nOffset_y, int nWidth, int nHeight);
	void Destroy();

	SDL_Window* GetWindow()
	{
		return m_screen;
	};

	static void SetUseDispalyArea(bool bUseDispalyArea);

	void SetDispalyAreaFalse()
	{
		m_bDisplayArea = false;
	}
	
	void UpdateAreaPoint(const QPoint &ptArea)
	{
		m_ptArea = ptArea;
	}

	void UpdateAreaRect(const QPoint &ptlt, const QPoint &ptbr)
	{
		m_ptlt = ptlt;
		m_ptbr = ptbr;
	}

	void SetDispalyRect(bool b)
	{
		m_bDisplayRect = b;
	}

	void UpdateAreaText(const std::string &strText)
	{
		m_strText = strText;
	}

	void DisplayReconn();

private:
	void DisplayChooseArea(const QPoint& pt);

	void DisplayChooseAreaRect(const QPoint& ptlt, const QPoint& ptbr);

private:
	//sdl显示需要成员
	SDL_Window *m_screen{nullptr};
	SDL_Renderer* m_sdlRenderer{ nullptr };
	SDL_Texture* m_sdlTexture{ nullptr };
	SDL_Rect * m_sdlRect { nullptr };

	SwsContext *m_img_convert_ctx{ nullptr };
	AVFrame	*m_pFrameYUV{ nullptr };
	uint8_t *m_out_buffer{ nullptr };
	
	QPoint m_ptArea{400,200};
	std::string m_strText{"X1"};
	_TTF_Font *m_pFont{nullptr};

	//全局设置
	static bool m_bUseDispalyArea;
	//对于全景，不显示通过m_bDisplayArea判断
	bool m_bDisplayArea{true}; 

	QPoint m_ptlt{ 200,200 };
	QPoint m_ptbr{ 400,300 };
	bool m_bDisplayRect{ false };
};