vCreateFileCapture读取与释放产生内存泄漏的问题

leeeeoooo

下面的函数是用来 显示一个视频内容的缩略图的函数，MFC写的。

现在发现一个很奇怪的问题。

现在情况是，一个列表控件里面有很多视频，当点击一个视频的时候，生成视频缩略图，内存平稳，没有泄漏。
当按着键盘的上下键来快速移动选择视频文件时候，内存就会暴增。达到几百兆轻而易举。
当选择一个视频文件的时候，产生一个线程，使用下面的函数处理。每次选择变化都会产生一个线程。

不知道内存暴增的原因是什么，有没有大大给解答下....       

1. void CShowThumbnailPicThread::ShowVideo(CString strVideoPath, CStatic *imgCtrl, CRect rect)
2. {
3.         CvCapture *capture = NULL;
4.         char *tmpPath = (CCommonFun::WcharToMultByte(strVideoPath.GetBuffer()));//这是个wchar_t转char的函数
5.         capture = cvCreateFileCapture(tmpPath);
6.         delete []tmpPath;
7.         //定位到第200帧
8.         cvSetCaptureProperty(capture, CV_CAP_PROP_POS_FRAMES, 200);
10.         if (capture != NULL)
11.         {
12.                 if(!cvGrabFrame(capture))
13.                 {
14.                         cvReleaseCapture(&capture);
15.                         ShowFileIcon(strVideoPath, imgCtrl, rect);//显示文件本身的图标函数
16.                         return;
17.                 }
18.                 ////以下作为一个图像来处理//////////////////
19.                 IplImage *img = NULL;
20.                 img = cvRetrieveFrame(capture);
21.                 if (img != NULL)
22.                 {
23.                         CRect rectTmp(rect);
24.                         IplImage *imgTmp = ResizeImg(img, &rectTmp);        //缩放后的图像和显示的矩形区域
25.                         if (imgTmp != NULL)        //如果缩放成功则显示
26.                         {       
27.                                 HDC hDC = imgCtrl->GetDC()->GetSafeHdc();
28.                                 CvvImage CvvImage;
29.                                 CvvImage.CopyOf(imgTmp);
30.                                 imgCtrl->SetIcon(NULL);
31.                                 CvvImage.DrawToHDC(hDC, &rectTmp);       
32.                                 cvReleaseImage(&imgTmp);
33.                                 ::ReleaseDC(AfxGetMainWnd()->m_hWnd, hDC);
34.                         }
35.                         else        //否则显示图像图标
36.                                 ShowFileIcon(strVideoPath, imgCtrl, rect);//显示文件本身的图标函数
37.                 }
38.                 else
39.                         ShowFileIcon(strVideoPath, imgCtrl, rect);
40.                 //释放capture
41.                 cvReleaseCapture(&capture);
42.         }
43.         else
44.                 ShowFileIcon(strVideoPath, imgCtrl, rect);
46.         return;
47. }

复制代码

leeeeoooo

问题是就是多线程使用  cvCreateFileCapture 产生了大量内存泄漏。

把其他都注释掉，仅留下

1. capture = cvCreateFileCapture(tmpPath);
2. cvReleaseCapture(&capture);

复制代码

仍然如此。

有高人解答下吗？

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