OpenCV视频播放方法

OpenCV视频播放方法

今天折腾了一下OpenCV的视频播放功能，希望能对项目又帮助～

代码还是非常easy的，仅仅是之前遇到点小麻烦，找不到cvCreateFileCapture函数的定义，花了一两个小时

Makefile：

SOURCE_FILE :=  play_video.c

OBJECT_FILE :=  play_video.o

CFLAGS = -Wall -Wconversion -O3 `pkg-config --cflags opencv`

LIBS = `pkg-config --libs --cflags opencv`

complie:
	gcc $(CFLAGS) -c $(SOURCE_FILE) $(LIBS)
link:
	gcc $(CFLAGS) $(OBJECT_FILE) -o ./a.out $(LIBS)

clean:
	rm -rf ./*.o ./a.out

/**************************************************************************
code writer : EOF
code date : 2014.10.22
code file : videos.c
e-mail  : jasonleaster@gmail.com jasonleaster@163.com

code decription:
	This is the demo for how to play a vedio by OpenCV.

	If you find something wrong with my code, please touch me by e-mail.Thank you.

****************************************************************************/
#include <stdio.h>
//#include "opencv2/highgui/highgui_c.h"
//#include "opencv2/imgproc/imgproc_c.h"
#include "highgui.h"
int main(int argc,char* argv[])
{
	CvCapture* capture = cvCreateFileCapture ("./B.avi");

	char* win_name = "Hello World";

	if(!capture)
	{
		printf("No capture");
		return 1;
	}

	cvNamedWindow(win_name,CV_WINDOW_AUTOSIZE);

	IplImage* frame;

	float ratio = 0;
	char  temp  = 0;
	while(1)
	{
		frame = cvQueryFrame(capture);
		if(!frame)
		{
			break;
		}

		cvShowImage(win_name,frame);

		temp = cvWaitKey(33);
		if(temp == 27)
		{
			break;
		}
	}

	cvReleaseCapture(&capture);
	cvDestroyWindow(win_name);

	return 0;
}