trying to track down a Memory Leak using open CV and SDL
The program main loop below is where I am having troubles finding a memory leak. I run Top and every time I loop through taking a picture and printing it, I lose memory that is never recovered even upon exit. I have run valgrind and some results are at the bottom. The progam runs fine until it runs out of memory. I seem to have leaks with cups and opencv and the leak is not a couple hundred bytes it is significant - I appreciate any help
Ubuntu 11.04 opencv 2.3.1
void DrawImage(SDL_Surface *srcimg, int sx, int sy, int sw, int sh, SDL_Surface *dstimg, int dx, int dy, int alpha) {
if ((!srcimg) || (alpha == 0)) return; //If theres no image, or its 100% transparent.
SDL_Rect src, dst;
src.x = sx; src.y = sy; src.w = sw; src.h = sh;
dst.x = dx; dst.y = dy; dst.w = src.w; dst.h = src.h;
SDL_BlitSurface(srcimg, &src, dstimg, &dst);
}
// ************************ Start of Main Loop ************************
while(Leave == 0)
{
if(Start != 0)
{
atr = IMG_Load("pic1.jpg");
DrawImage(atr, 0,0,DSP_WIDTH,DSP_HEIGHT,screen, 0, 0, 255);
SDL_Flip(screen);
CvCapture *camera = cvCreateCameraCapture(-1);
IplImage *frame2;
SDL_Surface* surface = NULL;
cvSetCaptureProperty(camera, CV_CAP_PROP_FRAME_HEIGHT, IMG_HEIGHT);
cvSetCaptureProperty(camera, CV_CAP_PROP_FRAME_WIDTH, IMG_WIDTH);
surface = IMG_Load("background.jpg");
Seconds = 15;
while(Seconds !=0)
{
frame2 = cvQueryFrame(camera);
if(!frame2)continue; //Couldn't get an image, try again next time.
SDL_Surface* surface2 = NULL;
surface2 = SDL_CreateRGBSurfaceFrom((void*)frame2->imageData,
frame2->width,
frame2->height,
frame2->depth*frame2->nChannels,
frame2->widthStep,
0xff0000, 0x00ff00, 0x0000ff, 0);
SDL_BlitSurface(surface2, NULL, surface, &offsetpic);
SDL_FreeSurface(surface2);
DrawImage(surface, 0,0,DSP_WIDTH,DSP_HEIGHT,screen, 0, 0, 255);
SDL_Flip(screen);
}
if(!cvSaveImage("lastprint.jpg",frame2,0)) printf("Could not save: lastprint.jpg");
cvReleaseImage(&frame2);
cvReleaseCapture(&camera); //Release the camera capture structure.
SDL_FreeSurface(surface);
cupsPrintFile(dest->name, "lastprint.jpg", "JOB1", dest->num_options, dest->options);
if(Start !=0) Start--; // Dec Start
// atr = IMG_Load("pic1.jpg");
DrawImage(atr, 0,0,DSP_WIDTH,DSP_HEIGHT,screen, 0, 0, 255);
SDL_Flip(screen);
}
}
Many of the one directly below here vvvvv
32,780 bytes in 1 blocks are still reachable in loss record 180 of 182
at 0x4026864: malloc (vg_replace_malloc.c:236)
by 0x4365BA7: ??? (in /usr/lib/libcups.so.2)
by 0x436731E: ippReadIO (in /usr/lib/libcups.so.2)
by 0x436785C: ippReadIO (in /usr/lib/libcups.so.2)
by 0x436785C: ippReadIO (in /usr/lib/libcups.so.2)
by 0x4367E85: ippRead (in /usr/lib/libcups.so.2)
by 0x437A173: cupsGetResponse (in /usr/lib/libcups.so.2)
by 0x437A501: cupsDoIORequest (in /usr/lib/libcups.so.2)
by 0x437A6FA: cupsDoRequest (in /usr/lib/libcups.so.2)
by 0x4358386: ??? (in /usr/lib/libcups.so.2)
by 0x4359D52: cupsGetDests2 (in /usr/lib/libcups.so.2)
by 0x435A1B4: cupsGetDests (in /usr/lib/libcups.so.2)
1,440,020 bytes in 1 blocks are possibly lost in loss record 181 of 182
at 0x4026864: malloc (vg_replace_malloc.c:236)
by 0x415D0EB: cv::fastMalloc(unsigned int) (in /usr/local/lib/libopencv_core.so.2.3.1)
by 0x4A5DE36: (below main) (libc-start.c:226) ---DrawImage is the only thing below main
67,108,864 bytes in 4 blocks are possibly lost in loss record 182 of 182
at 0x4026864: malloc (vg_replace_malloc.c:236)
by 0x473C057: _capture_V4L2(CvCaptureCAM_V4L*, char*) (in /usr/lo开发者_C百科cal/lib/libopencv_highgui.so.2.3.1)
Well, at a minimum you never call SDL_FreeSurface()
on atr
.
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