ExampleBlackmagic.cpp

Go to the documentation of this file.

/**
 * @file
 * @brief Source file for Main_Blackmagic class (live greenscreen example app)
 * @author Jonathan Thomas <jonathan@openshot.org>
 *
 * @section LICENSE
 *
 * Copyright (c) 2008-2014 OpenShot Studios, LLC
 * <http://www.openshotstudios.com/>. This file is part of
 * OpenShot Library (libopenshot), an open-source project dedicated to
 * delivering high quality video editing and animation solutions to the
 * world. For more information visit <http://www.openshot.org/>.
 *
 * OpenShot Library (libopenshot) is free software: you can redistribute it
 * and/or modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * OpenShot Library (libopenshot) is distributed in the hope that it will be
 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with OpenShot Library. If not, see <http://www.gnu.org/licenses/>.
 */

#include <fstream>
#include <iostream>
#include <map>
#include <queue>
#include <tr1/memory>
#include "../../include/OpenShot.h"
#include <omp.h>
#include <time.h>

using namespace openshot;

int main(int argc, char *argv[])
{
        // Init datetime
        time_t rawtime;
        struct tm * timeinfo;

        /* TIMELINE ---------------- */
        Timeline t(1920, 1080, Fraction(30,1), 48000, 2, LAYOUT_STEREO);

        // Create background video
        ImageReader b1("/home/jonathan/Pictures/moon.jpg");
        ImageReader b2("/home/jonathan/Pictures/trees.jpg");
        ImageReader b3("/home/jonathan/Pictures/clouds.jpg");
        ImageReader b4("/home/jonathan/Pictures/minecraft.png");
        ImageReader b5("/home/jonathan/Pictures/colorpgg03.jpg");
        Clip c1(&b1);

        // Background counter
        int background_frame = 0;
        int background_id = 1;

        DecklinkReader dr(1, 11, 0, 2, 16);
        Clip c2(&dr);
        Clip c3(new ImageReader("/home/jonathan/Pictures/watermark.png"));

        // mask
        Clip c4(new ImageReader("/home/jonathan/Pictures/mask_small.png"));

        // CLIP 1 (background image)
        c1.Position(0.0);
        c1.scale = SCALE_NONE;
        c1.Layer(0);
        t.AddClip(&c1);

        // CLIP 2 (decklink live stream)
        c2.Position(0.0);
        c2.scale = SCALE_NONE;
        c2.Layer(1);
        t.AddClip(&c2);

        // CLIP 3 (foreground image 1)
        c3.Position(0.0);
        c3.gravity = GRAVITY_TOP;
        //c3.gravity = GRAVITY_BOTTOM;
        c3.scale = SCALE_NONE;
        c3.Layer(2);
        t.AddClip(&c3);

        // CLIP 4 (foreground image 2)
        c4.Position(0.0);
        c4.gravity = GRAVITY_TOP;
        c4.scale = SCALE_NONE;
        c4.Layer(3);
        //t.AddClip(&c4);

        // Decklink writer
        DecklinkWriter w(0, 11, 3, 2, 16);
        w.Open();

        // Loop through reader
        int x = 0;
        while (true)
        {
                tr1::shared_ptr<Frame> f = t.GetFrame(x);
                if (f)
                {
                        if (x != 0 && x % 30 == 0)
                        {
                                cout << "30 frames... (" << abs(dr.GetCurrentFrameNumber() - x) << " diff)" << endl;

                                if (x != 0 && x % 60 == 0)
                                {
                                        time ( &rawtime );
                                        timeinfo = localtime ( &rawtime );

                                        stringstream timestamp;
                                        timestamp << asctime (timeinfo);

                                        stringstream filename;
                                        filename << "/home/jonathan/Pictures/screenshots/detailed/" << timestamp.str() << ".jpeg";
                                        f->Save(filename.str(), 1.0);
                                        stringstream filename_small;
                                        filename_small << "/home/jonathan/Pictures/screenshots/thumbs/" << timestamp.str() << ".jpeg";
                                        f->Save(filename_small.str(), 0.15);
                                }
                        }

                        // Send current frame to BlackMagic
                        w.WriteFrame(f);

                        // Increment background frame #
                        background_frame++;

                        // Change background
                        if (background_frame == 300)
                        {
                                background_frame = 0;
                                switch (background_id)
                                {
                                case 1:
                                        c1.Reader(&b2);
                                        background_id = 2;
                                        break;
                                case 2:
                                        c1.Reader(&b3);
                                        background_id = 3;
                                        break;
                                case 3:
                                        c1.Reader(&b4);
                                        background_id = 4;
                                        break;
                                case 4:
                                        c1.Reader(&b5);
                                        background_id = 5;
                                        break;
                                case 5:
                                        c1.Reader(&b1);
                                        background_id = 1;
                                        break;
                                }
                        }


                        //usleep(500 * 1);
                        // Go to next frame on timeline
                        if (abs(dr.GetCurrentFrameNumber() - x) > 40 || x == 90)
                        {
                                // Got behind... skip ahead some
                                x = dr.GetCurrentFrameNumber();

                                cout << "JUMPING AHEAD to " << x << ", background moved to " << (float(x) / 30.0f) << endl;
                        }
                        else
                                // Go to the next frame
                                x++;
                }
        }

        // Sleep
        sleep(4);




        // Image Reader
//      ImageReader r1("/home/jonathan/Pictures/Screenshot from 2013-02-10 15:06:38.png");
//      r1.Open();
//      tr1::shared_ptr<Frame> f1 = r1.GetFrame(1);
//      r1.Close();
//      f1->TransparentColors("#8fa09a", 20.0);
//      f1->Display();
//      return 0;

//      ImageReader r2("/home/jonathan/Pictures/trees.jpg");
//      r2.Open();
//      tr1::shared_ptr<Frame> f2 = r2.GetFrame(1);
//      r2.Close();

//      DecklinkReader dr(1, 11, 0, 2, 16);
//      dr.Open();
//
//      DecklinkWriter w(0, 11, 3, 2, 16);
//      w.Open();
//
//      // Loop through reader
//      int x = 0;
//      while (true)
//      {
//              if (x % 30 == 0)
//                      cout << "30 frames..." << endl;
//
//              tr1::shared_ptr<Frame> f = dr.GetFrame(0);
//              if (f)
//              {
//                      //f->Display();
//                      w.WriteFrame(f);
//                      usleep(1000 * 1);
//
//                      x++;
//              }
//      }
//
//      // Sleep
//      sleep(4);
//
//      // Close writer
//      w.Close();

        return 0;
}