video_player.h

在linux下简易的播放器

#ifndef _VIDEO_PLAYER_H_
#define _VIDEO_PLAYER_H_

#include <qwidget.h>
#include <qimage.h>

#include "video.h"

class capture_thread;

class VideoPlayer : public QWidget
{
    Q_OBJECT

public:

	// 构造函数
    VideoPlayer ( QWidget *parent = 0, const char *name = 0, int wFlags = 0 );

	// 析构函数
    ~VideoPlayer();

	// 初始化函数
	int init( void );

protected:

	// 内部方法，当发生重绘事件时被调用
    void paintEvent( QPaintEvent * );

private:

	// 设置当前图像，并重绘屏幕
    void setImage(const QImage * newimage);
    void setPixmap(const QPixmap * newimage);

	// 目的不明
    bool reconvertImage( void );
	
	void mousePressEvent ( QMouseEvent * e );

	unsigned char clip(int x);

	void yuv411rgb(unsigned char *yuv,unsigned char *rgb,int size);

public slots:

	int get_new_image( void );
	

private:

	// 指向重绘时图像的指针
    const QImage * image;
	const QPixmap * pixmap;

    const QImage * qimage_buff[2];

	BUFF * read_buff;
	BUFF * rgb_buff;

	FILE * rgbfile;

	// 画笔对象
	QPainter * painter;

	int dev_id;

	BUFF * last_image[2];

	int frame;
	int alloc_context;
	
	int width, height;

};


#endif //_VIDEO_PLAYER_H_