showdvcam.cpp

#include <Image/Camera.hh>
#include <Base/Image/ImageConvert.hh>
#include <Base/Image/ImageIO.hh>
#include <VideoSource/VideoSource_DV.hh>
#include <Base/Debug/TimeMeasure.hh>
#include <Gui/GuiCV.hh>
#include <unistd.h>
#include <getopt.h>

using namespace BIAS;
using namespace std;

#define StorageType unsigned char

void mainloop(VideoSource_DV *cam)
{
    GuiCV CamWin;
    bool done = false;
    char c;
    char title[100];

    struct timeval now;
    float fps;
    int i,savedframes, savecounter=0;

    long start=0, end;
    bool color, pause,  autosave=false;
    ostringstream os;

    TimeMeasure t1,t2;

    Camera<unsigned char> pic,pic2;

    sprintf(title,"MyWindow");
    CamWin.SetTitle(title);
    cam->InitImage(pic);
    pic2.Init(720, pic.GetHeight(),3);

    pause = false;
    color = true;

    i = 1;
    savedframes = 0;


    bool save;
    //pic2.SetDebugLevel(D_CONVERT);

    while (!done){
        save = false;
        gettimeofday(&now, NULL);
        end = start;
        start =  (now.tv_sec % 1000) * 1000 + (now.tv_usec / 1000);
        fps = 1.0 / (float)(start-end) * 1000.0 ;

        c = CamWin.CheckForKeyEvent();
        switch (c) {
        case 'q':
        done = true;
        break;
        case 's':
            save = true;
            break;
        case 'S':
            autosave=!autosave;
            savecounter=0;
            if (autosave) cerr << "\nstarted saving sequence at frame "<<i<<endl;
            else cerr << "\nstopped saving sequence at frame "<<i<<endl;
            break;
        case ' ':
            pause = !pause;
            break;
        case 'c':
            color = !color;
            if (color) cerr << "\nshowing color image" << endl;
            else cerr << "\nshowing grey image" << endl;
            break;
        default:
            if (c!=-1) cerr <<"unknown key "<<c<<endl;
            break;
        }


        if (!pause) {
            //       cout <<"starting grab"<<endl;
            cam->GrabSingle(pic);
            //       cout <<"got image"<<endl;

            ImageConvert::ToRGB(pic, pic2);

            //if (i==10)
            //  pic2.ExportImage("Cam.pnm",MIP_pnm);
            if (save) {
                //ImageIO::Save("image",pic2);
                ImageIO::Save("image",pic2);
                //          ImageIO::ExportImage("image.pnm",pic2,ImageIO::FF_ppm);
                save = false;
            }
            if (autosave){
                os.str("");
                os << "frame" << setfill('0') << setw(5) << savecounter;
                if (ImageIO::ExportImage(os.str(),pic2, ImageIO::FF_pgm)!=0){
                    BIASERR("error saving frame "<<i<<" at file "<<os.str()<<".pgm");
                }
                savecounter++;
            }

            CamWin.ShowImage(pic2);

            cout <<"Frame: "<<i<<"  Showing  fps: "<<fps<<"\r";
            cout.flush();

            i++;
        } // if (!pause)
    }
}

int main(int argc, char *argv[])
{
    int res;


    VideoSource_DV *cam;

    // prepare camera
    cam = new VideoSource_DV;

    cam->SetDebugLevel(D_DV);

    //   cam->SetDebugLevel(D_DCAM);
    res = cam->OpenDevice() ;
    cout <<"Openresult: "<<res<<endl;

    if (res <0) {
        cerr<<" Can not open camera"<<endl;
        exit(1);
    }

    //cam->ShowCapabilities();
    cam->PreGrab();

    cout <<" s  : save an image \n";
    cout <<" S  : save sequence\n";
    cout <<"SPC : Stop/Resume\n";
    cout <<" e  : toggle between slow and fast conversion\n";
    cout <<" q  : Quit      \n";


    mainloop(cam );

    cam->PostGrab();

    cam->CloseDevice();
    delete cam;

    return 0;
}