Can anyone help me find what's wrong with my code for a video player based off sensor reading

edited May 17 in Arduino

I'm fairly new to processing and it's my first time involving videos. I am currently using Arduino and Processing to create touch sensitive video player. I have managed to get Arduino to send the readings to Processing and it is reading them. But I can't get the videos to play properly when a sensor is activated (going from 0>1). I think there might be a few things wrong/missing with the code or certain things in the wrong place. A blank screen currently loads when I run the sketch and doesn't change even when activating the sensors. I have the video files in a 'data' folder within the sketch folder so I think they are in the right place. Any help at all is greatly appreciated. Code below;

import processing.serial.*;
import processing.video.*;

Movie movie1;
Movie movie2;
Movie movie3;
//etc.

Serial myPort;
int linefeed = 10;   // Linefeed in ASCII
int numSensors = 3;  // we will be expecting for reading data from four sensors (CHANGE)
int sensors[];       // array to read the values
int pSensors[];      // array to store the previuos reading, useful for comparing
// actual reading with the last one

String currentMovie;

void setup() {
  size(1440, 1080);

  println(Serial.list());

  // files inside processing folder for this programme
  movie1 = new Movie(this, "Sun.mp4");
  movie2 = new Movie(this, "Mercury.mp4");
  movie3 = new Movie(this, "Venus.mp4");
  //etc.

  myPort = new Serial(this, Serial.list()[3], 115200);
  // read bytes into a buffer until you get a linefeed (ASCII 10):
  myPort.bufferUntil(linefeed);
}

void draw() {

  // check the sensors and sets the movie to play

  if (currentMovie == "")        //if nothing is playing
  {
    if (sensors[0] == 1)
    {
      //print("Play Movie 1");
      currentMovie = "movie1";
      movie1.play();
    } else if (sensors[1] == 1)
    {
      print("Play Movie 2");
      currentMovie = "movie2";
      movie2.play();
    } else if (sensors[2] == 1)
    {
      print("Play Movie 3");
      currentMovie = "movie3";
      movie3.play();
    }
  } else
  {
    // do nothing (if a movie is playing do nothing)
  }

  // show the movie frames

  if (currentMovie == "movie1")
  {
    if (movie1.available())
    {
      image(movie1, 0, 0);
    } else
    {
      currentMovie = "";    // if a frame is available, show the next frame. This means once the video ends it will play nothing.
    }
  } else if (currentMovie == "movie2")
  {
    if (movie2.available())
    {
      image(movie2, 0, 0);
    } else
    {
      currentMovie = "";
    }
  } else if (currentMovie == "movie3")
  {
    if (movie3.available())
    {
      image(movie3, 0, 0);
    } else
    {
      currentMovie = "";
    }
  }
}

void serialEvent(Serial myPort) {

  // read the serial buffer:
  String myString = myPort.readStringUntil(linefeed);

  // if you got any bytes other than the linefeed:
  if (myString != null) {

    myString = trim(myString);

    // split the string at the commas
    // and convert the sections into integers:

    pSensors = sensors;
    sensors = int(split(myString, ','));

    // print out the values you got:

    for (int sensorNum = 0; sensorNum < sensors.length; sensorNum++) {
      print("Sensor " + sensorNum + ": " + sensors[sensorNum] + "\t");
    }

    // add a linefeed after all the sensor values are printed:
    println();
  }
}

void movieEvent(Movie m) {
  m.read();
}

Answers

  • try to change this line with available()

     if (currentMovie == "")        //if nothing is playing
    {
    
  • I've placed line 63&64 with this;

      if(Movie.available()) {
    Movie.read();
      }
    

    Is that what you meant as that comes up with the error "Cannot make a static reference to the non-static method available() from the type Movie"

  • Here is some untested code for you to review. There is another way to do it a bit better. However, I didn't implemented it because you didn't describe what your input should do. Should the movie keep playing after the one is set to zero? Or should it play when there is a one in the line? How to handle the case that you have multiple ones or in case there are no ones in your input stream?

    Kf

    import processing.serial.*;
    import processing.video.*;
    
    final int NOMOVIE=-100;
    final int MOVIE1=0;
    final int MOVIE2=1;
    final int MOVIE3=2;
    
    final int lineFeed = 10;   // Linefeed in ASCII
    
    Movie movie1;
    Movie movie2;
    Movie movie3;
    //etc.
    
    Serial myPort;
    
    int numSensors = 3;  // we will be expecting for reading data from four sensors (CHANGE)
    int sensors[];       // array to read the values
    int pSensors[];      // array to store the previuos reading, useful for comparing
    // actual reading with the last one
    
    String currentMovie;
    int current=NOMOVIE;  //INIT
    
    void setup() {
      size(1440, 1080);
    
      println(Serial.list());
    
      // files inside processing folder for this programme
      movie1 = new Movie(this, "Sun.mp4");
      movie2 = new Movie(this, "Mercury.mp4");
      movie3 = new Movie(this, "Venus.mp4");
      //etc.
    
      myPort = new Serial(this, Serial.list()[3], 115200);
      // read bytes into a buffer until you get a linefeed (ASCII 10):
      myPort.bufferUntil(lineFeed);
    }
    
    void draw() {
      //PROPER way to compare strings:  if (currentMovie.equals("movie1")==true)
    
      //Better/faster way to do business
      switch(current) {
      case MOVIE1:
        if (movie1.available()) 
          image(movie1, 0, 0);
        break;
      case MOVIE2:
        if (movie2.available()) 
          image(movie2, 0, 0);
        break;
      case MOVIE3:
        if (movie3.available()) 
          image(movie3, 0, 0);
        break;
        default:
        break;
      }
    }
    
    void movieEvent(Movie m) {
      m.read();
    }
    
    void serialEvent(Serial myPort) {
    
      // read the serial buffer:
      String myString = myPort.readStringUntil(lineFeed);
    
      // if you got any bytes other than the linefeed:
      if (myString != null) {
    
        myString = trim(myString);
    
        // split the string at the commas
        // and convert the sections into integers:
    
        pSensors = sensors;
        sensors = int(split(myString, ','));
    
        // print out the values you got:
    
        for (int sensorNum = 0; sensorNum < sensors.length; sensorNum++) {
          print("Sensor " + sensorNum + ": " + sensors[sensorNum] + "\t");
        }
    
        // add a linefeed after all the sensor values are printed:
        println();
    
        if (sensors[0] == 1)
        {
          current=MOVIE1;      
          movie1.play();
          movie2.stop();
          movie3.stop();
        } else if (sensors[1] == 1)
        {
          current=MOVIE2;
          movie1.stop();
          movie2.play();
          movie3.stop();
        } else if (sensors[2] == 1)
        {
          current=MOVIE3;
          movie1.stop();
          movie2.stop();
          movie3.play();
        }
        else{
          current=NOMOVIE;
          movie1.stop();
          movie2.stop();
          movie3.stop();
        }
    
        currentMovie = "movie"+(current+1);
        println("Now playing " + (current==NOMOVIE?" No movie selected":currentMovie) );
      }
    }
    
  • It's working more than my previous code, sorry I didn't describe the input.

    Basically what the sensors will be inside the planets and I want it so when one is touched it plays the video all the way through, but allows the user to take their hand away without the video stopping.

    So... I need it so when a sensor turns to 1, it plays it's assigned video all the way through even if the value returns to 0 OR another sensor changes to 1 whilst the video is playing if that makes sense?

    Thankyou

  • Ok, so as it is right now, if you don't get any signal, it will stop playing the movies. You can remove the stop calls in lines 114-116. However if another sensors is driven (or even the same current sensor) it will play the new movie again.

    You need to do two things:

    1. Figure out the time lapsed playing the video. There is an example provided by the movie library.
    2. Think about a way to lock the current state until the movie ends playing based on information from the first point.

    I will suggest doing this in a separate sketch using only one movie and no arduino. Then you can integrate it to your sketch. I can try putting something together if I get some play time later today or tomorrow.

    Kf

  • Okay, I took the stop calls out and added a delay on the Arduino to slow down when it picks up a reading from the sensors which made the audio work but didn't actually play the video properly.

    I'm aware of the duration() function which returns the length of the video. So I would imagine it involves play(), then I don't know if it would be possible to either lock the video for the duration or stop receiving results from the arduino (not reacting to the sensors) until the video is finished. I'm not sure if that would be the best way to go about it or how exactly the code would look for it.

  • That is the way to do it. You will have a boolean field on a global scope. The boolean field will lock any arduino processing until the movie finishes playing. How to control the boolean flag based on the movie's playing time? This is what I am thinking. When you start playing a movie, you lock your boolean value and you collect a time stamp using millis() after you have determined the duration of the movie. Then you keep checking millis() against your startStamp+movie_duration. When millis is more than timeStamp+movie_duration, you can assume the movie has stopped playing. You unlock the boolean field and your arduino will be able to process data.

    In the arduino side:

    void serialEvent(){
    
       if(movie_lock==true){
          //MOVIE is playing... exiting serialEvent prematurely
          return();
       }
    
        ...REST of the code processing seriall data
    
    }
    

    Kf

  • Is the code above all that would be required to be placed in to code? I'm unsure on how to add the boolean field + startStamp+movie_duration section to the code I have.

    I was thinking would it be easier if I manually found out the duration of the videos as they wouldn't change, would that allow for me to do something such as... play video1>lock for 45millis>end video>start receiving data again So that it doesn't have to find out the duration as it is playing the video and then keep comparing it against the start time. I don't know if this is possible/an easier method.

  • Here is the working example as you described it in one of your previous posts.

    Kf

    //REFERENCES: https://forum.processing.org/two/discussion/22640/can-anyone-help-me-find-what-s-wrong-with-my-code-for-a-video-player-based-off-sensor-reading#latest
    //REFERENCES: https://forum.processing.org/two/discussion/22663/how-would-i-make-the-sound-play-it-doesn-t-work#latest
    
    //INSTRUCTIONS:
    //         *-- QUOTE: Basically what the sensors will be inside the planets and I want it so when one is touched it 
    //         *--         plays the video all the way through, but allows the user to take their hand away without the 
    //         *--         video stopping.
    //         *--         So... I need it so when a sensor turns to 1, it plays it's assigned video all the way through 
    //         *--         even if the value returns to 0 OR another sensor changes to 1 whilst the video is playing if 
    //         *--         that makes sense?
    //         *--
    //         *-- You need to have three movies defined in setup (or as many as dictated by "n"). When a valid signal is
    //         *-- detected, its associated movie is played. No other signal is processed but only after the movie ends
    //         *-- playing. 
    //         *-- REMARK: You can comment out the opening of the serial port (myport = new serial(...) ) and then you can use
    //         *-- key events to trigger the movies as simulating data arriving from arduino. Press the keys from 1 to n, inclusive
    //         *-- where n is the number of movies available. When working with the arduino project, you can disregard key events and
    //         *-- you should comment out this section of the code. 
    
    //===========================================================================
    // IMPORTS:
    import processing.serial.*;
    import processing.video.*;
    
    //===========================================================================
    // FINAL FIELDS:
    final int NOMOVIE=-100;
    final int MOVIE1=0;
    final int MOVIE2=1;
    final int MOVIE3=2;
    
    final int lineFeed = 10;   // Linefeed in ASCII
    
    //===========================================================================
    // GLOBAL VARIABLES:
    
    int n=3;
    Movie mov[]=new Movie[n];
    
    Serial myPort;
    
    int numSensors = n;  // we will be expecting for reading data from four sensors (CHANGE)
    int sensors[];       // array to read the values
    int pSensors[];      // array to store the previuos reading, useful for comparing
    // actual reading with the last one
    
    String currentMovie;
    int current=NOMOVIE;  //INIT
    int targetTime=-1;  //For movie to finish playing
    
    //===========================================================================
    // PROCESSING DEFAULT FUNCTIONS:
    
    void setup() {
      size(600, 600);
      background(0);
    
      // files inside processing folder for this programme
      mov[MOVIE1] = new Movie(this, "mov1.mov");
      mov[MOVIE2] = new Movie(this, "mov2.mp4");
      mov[MOVIE3] = new Movie(this, "mov3.mov");
    
      updateCurrentMovie(NOMOVIE);  //PROPER init!
    
      println(Serial.list());
      myPort = new Serial(this, Serial.list()[3], 115200);
      // read bytes into a buffer until you get a linefeed (ASCII 10):
      myPort.bufferUntil(lineFeed);
    }
    
    void draw() {
    
      //PROPER way to compare strings:  if (currentMovie.equals("movie1")==true)
    
      if (current!=NOMOVIE) {
        //if (mov[current].available())    ##### IMPORTANT: Don't do this... in Win10, it was blocking the video
        image(mov[current], 0, 0);
    
        //DETECT when a movie has stopped playing... counter time has expired 
        //so set current index to no movie.
        if (millis()>targetTime) {
          println("Stopping "+current+": "+currentMovie);
          updateCurrentMovie(NOMOVIE);
          stopAll();
        }
      } else {
        background(20, 150, 20);
      }
    }
    
    void keyReleased() {
    
      if (key>='1' && key<=('1'+n-1)) {   
    
        int[] sensors=new int[n];
        for (int i=0; i<n; i++)
          sensors[i]=0;
    
        sensors[key-'1']=1;
        processInputData(sensors);
      } else {
        println("Nothing to do");
      }
    }
    
    
    void movieEvent(Movie m) {
      m.read();
    }
    
    
    
    //===========================================================================
    // OTHER FUNCTIONS:
    
    void stopAll() {
      for (Movie m : mov) {
        m.stop();
        m.jump(0);
      }
      targetTime=-1;
    }
    
    void playOne(int idx) {
      stopAll();
      mov[idx].play();
      delay(20);
      targetTime=20+millis()+int(mov[idx].duration()*1000);    //Time in msecs: current mscs + delay + movie's duration 
      println("Time schedule: " + millis() +" -> "+targetTime+" msec");
    
      println("Now playing " + currentMovie);
    }
    
    void serialEvent(Serial myPort) {
    
      ////ONLY process serial data is not movie is been played
      //if (current!=NOMOVIE)
      //  return;
    
      // read the serial buffer:
      String myString = myPort.readStringUntil(lineFeed);
    
      // if you got any bytes other than the linefeed:
      if (myString != null) {
    
        myString = trim(myString);
    
        // split the string at the commas
        // and convert the sections into integers:
    
        pSensors = sensors;
        sensors = int(split(myString, ','));
    
        // print out the values you got:
    
        for (int sensorNum = 0; sensorNum < sensors.length; sensorNum++) {
          print("Sensor " + sensorNum + ": " + sensors[sensorNum] + "\t");
        }
    
        // add a linefeed after all the sensor values are printed:
        println();
    
        processInputData(sensors);
      }
    }
    
    
    
    void processInputData(int[] sensors) {
    
      //ONLY process serial data is not movie is been played
      if (current!=NOMOVIE) {
        println("Action blocked: A movie is still been played!");
        return;
      }
    
      if (sensors[MOVIE1] == 1) {
        updateCurrentMovie(MOVIE1);
      } else if (sensors[MOVIE2] == 1) {
        updateCurrentMovie(MOVIE2);
      } else if (sensors[MOVIE3] == 1) {
        updateCurrentMovie(MOVIE3);
      } else {
        updateCurrentMovie(NOMOVIE);
        println("Received data: Nothing to do (" + currentMovie+")");
      }
    
      if (current!=NOMOVIE)
        playOne(current);
    }
    
    void updateCurrentMovie(int c) {
      current=c;
      currentMovie = current==NOMOVIE?" No movie selected":"movie"+(current+1);
      surface.setTitle(currentMovie);
    }
    
  • Hi, thanks a lot for the reply.

    This works exactly how I want it to when using the Keys. But when commenting them out and trying to use the Serial Ports I get a few problems.

    So when using the serial from arduino, it reads the sensors, and when a sensor is activated I get 1 of 2 errors, Firstly I get this;

    --

    Sensor 0: 1 Sensor 1: 0 Sensor 2: 0 Stopping 0: movie1

    (Processing core video:4812): GStreamer-WARNING **: cannot replace existing sync handler

    Native Object has been disposed

    It is also worth noting that it is highlighting m.stop(); in the section of code from below after this error is occuring.

    void stopAll() {
      for (Movie m : mov) {
        m.stop();
        m.jump(0);
      }
      targetTime=-1;
    }
    

    --

    No video appears and it stops reading any sensors.

    It also comes up with the error below ( especially when commenting out the 2 lines of code below underneath void serialEvent(Serial myPort) { ) //if (current!=NOMOVIE) //return;

    Error: Error, disabling serialEvent() for /dev/tty.usbmodem1411 null

    I have tried this with it commented in and it seems to happen less often but is still not showing any video.

  • Can you post your arduino code?

    Kf

  • This will eventually be for 9 sensors (8 planets + Sun). Currently 6 in use

    #include <CapacitiveSensor.h>
    
    bool debug = false;
    
    CapacitiveSensor   cs_4_2 = CapacitiveSensor(4,2);        // 10M resistor between pins 4 & 2, pin 2 is sensor pin, add a wire and or foil if desired
    CapacitiveSensor   cs_4_3 = CapacitiveSensor(4,3);        // 10M resistor between pins 4 & 6, pin 6 is sensor pin, add a wire and or foil
    CapacitiveSensor   cs_4_5 = CapacitiveSensor(4,5);        // 10M resistor between pins 4 & 8, pin 8 is sensor pin, add a wire and or foil
    CapacitiveSensor   cs_4_6 = CapacitiveSensor(4,6);
    CapacitiveSensor   cs_4_7 = CapacitiveSensor(4,7);
    CapacitiveSensor   cs_4_8 = CapacitiveSensor(4,8);
    //CapacitiveSensor   cs_4_9 = CapacitiveSensor(4,9);
    //CapacitiveSensor   cs_4_10 = CapacitiveSensor(4,10);
    //CapacitiveSensor   cs_4_11 = CapacitiveSensor(4,11);
    
    void setup()                    
    {
    
      //  cs_4_2.set_CS_AutocaL_Millis(0xFFFFFFFF);     // turn off autocalibrate on channel 1 - just as an example
      Serial.begin(115200);
    }
    
    void loop()                    
    {
      long start = millis();
      long total1 =  cs_4_2.capacitiveSensor(4000);
      long total2 =  cs_4_3.capacitiveSensor(4000);
      long total3 =  cs_4_5.capacitiveSensor(4000);
      long total4 =  cs_4_6.capacitiveSensor(4000);
      long total5 =  cs_4_7.capacitiveSensor(4000);
      long total6 =  cs_4_8.capacitiveSensor(4000);
      //long total7 =  cs_4_9.capacitiveSensor(8000);
      //long total8 =  cs_4_10.capacitiveSensor(8000);
      //long total9 =  cs_4_11.capacitiveSensor(8000);
    
    
      if(debug)
      {
        Serial.print(millis() - start);        // check on performance in milliseconds
        Serial.print("\t");                    // tab character for debug windown spacing
        Serial.print(total1);      //showing the values for sensor 1
        Serial.print("\t");        //creating a tab between the next value
        Serial.print(total2);      // print sensor output 2
        Serial.print("\t");        //creating a tab between the next value
        Serial.print(total3);      // print sensor output 2
        Serial.print("\t");        //creating a tab between the next value
        Serial.print(total4);      // print sensor output 2
        Serial.print("\t");        //creating a tab between the next value
        Serial.print(total5);      // print sensor output 2
        Serial.print("\t");        //creating a tab between the next value
        Serial.print(total6);
        //Serial.print("\t");        //creating a tab between the next value
        //Serial.print(total7);      // print sensor output 2
        //Serial.print("\t");        //creating a tab between the next value
        //Serial.print(total8);
        //Serial.print("\t");        //creating a tab between the next value
        //Serial.print(total9);      // print sensor output 2
        Serial.println("\t");      //creates another line
      }
      else{
    
        if (total1 > 150) {
          Serial.print(1, DEC);
          Serial.print(",");
        } 
        else
        {
          Serial.print(0, DEC);
          Serial.print(",");
        }
        if (total2 > 150)
          Serial.print(1, DEC);
          Serial.print(",");
        }
        else
        {
          Serial.print(0, DEC);
          Serial.print(",");
        }
        if (total3 > 150)
        {
          Serial.print(1, DEC);
          Serial.print(",");
        }
        else
        {
          Serial.print(0, DEC);
          Serial.print(",");
        }
        if (total4 > 150)
        {
          Serial.print(1, DEC);
          Serial.print(",");
        }
        else
        {
          Serial.print(0, DEC);
          Serial.print(",");
        }
         if (total5 > 150)
        {
          Serial.print(1, DEC);
          Serial.print(",");
        }
        else
        {
          Serial.print(0, DEC);
          Serial.print(",");
        }
         if (total6 > 150)
        {
          Serial.println(1, DEC);
        }
        else
        {
          Serial.println(0, DEC);
        }
    
      }
    
        delay(500);                             // arbitrary delay to limit data to serial port 
    }
    
  • Two changes:

    In code function playOne(), remove the call to stopAll() as it is not needed.

    The second change is to remove those lines in serialEvent. I have them there initially but now that I think about it, one needs it to clear the buffer. I guess one could flush the buffer but there are more technicalities that needs to be taken into account before flushing the buffer. For now, let the serial event process any incoming data and make sure that

      if (current!=NOMOVIE) {
        println("Action blocked: A movie is still been played!");
        return;
      }
    

    are the first lines in the function void processInputData(int[] sensors). I don't think this will solve all the problems.

    Kf

  • I tried what you said to do and received these results without it playing any videos

    Sensor 0: 0 Sensor 1: 0 Sensor 2: 0 Sensor 3: 0 Sensor 4: 0 Sensor 5: 0

    Received data: Nothing to do ( No movie selected)

    Sensor 0: 0 Sensor 1: 1 Sensor 2: 0 Sensor 3: 0 Sensor 4: 0 Sensor 5: 0

    Stopping 1: movie2

    Time schedule: 28498 -> 62139 msec

    Now playing No movie selected

    Sensor 0: 0 Sensor 1: 1 Sensor 2: 0 Sensor 3: 0 Sensor 4: 0 Sensor 5: 0

    Stopping 1: movie2

    I played around with it a bit and actually got it to work apart from a few small problems. I commented out a few of the stopAll functions and it started to work with the code below;

    // IMPORTS:
    import processing.serial.*;
    import processing.video.*;
    
    //===========================================================================
    // FINAL FIELDS:
    final int NOMOVIE=-100;
    final int MOVIE1=0;
    final int MOVIE2=1;
    final int MOVIE3=2;
    
    final int lineFeed = 10;   // Linefeed in ASCII
    
    //===========================================================================
    // GLOBAL VARIABLES:
    
    int n=3;
    Movie mov[]=new Movie[n];
    
    Serial myPort;
    
    int numSensors = n;  // we will be expecting for reading data from four sensors (CHANGE)
    int sensors[];       // array to read the values
    int pSensors[];      // array to store the previuos reading, useful for comparing
    // actual reading with the last one
    
    String currentMovie;
    int current=NOMOVIE;  //INIT
    int targetTime=-1;  //For movie to finish playing
    
    //===========================================================================
    // PROCESSING DEFAULT FUNCTIONS:
    
    void setup() {
      size(1280, 720);
      background(0);
    
      // files inside processing folder for this programme
      mov[MOVIE1] = new Movie(this, "Sun.mp4");
      mov[MOVIE2] = new Movie(this, "Mercury.mp4");
      mov[MOVIE3] = new Movie(this, "Venus.mp4");
    
      updateCurrentMovie(NOMOVIE);  //PROPER init!
    
      println(Serial.list());
      myPort = new Serial(this, Serial.list()[3], 115200);
      // read bytes into a buffer until you get a linefeed (ASCII 10):
      myPort.bufferUntil(lineFeed);
    }
    
    void draw() {
    
      //PROPER way to compare strings:  if (currentMovie.equals("movie1")==true)
    
      if (current!=NOMOVIE) {
        //if (mov[current].available())    ##### IMPORTANT: Don't do this... in Win10, it was blocking the video
        image(mov[current], 0, 0);
    
        //DETECT when a movie has stopped playing... counter time has expired 
        //so set current index to no movie.
        if (millis()>targetTime) {
          println("Stopping "+current+": "+currentMovie);
          updateCurrentMovie(NOMOVIE);
          //stopAll();
        }
      } else {
        background(0);
      }
    }
    
    // void keyReleased() {
    //
    //  if (key>='1' && key<=('1'+n-1)) {   
    //
    //    int[] sensors=new int[n];
    //    for (int i=0; i<n; i++)
    //      sensors[i]=0;
    //
    //    sensors[key-'1']=1;
    //    processInputData(sensors);
    //  } else {
    //    println("Nothing to do");
    //  }
    //}
    
    
    void movieEvent(Movie m) {
      m.read();
    }
    
    
    
    //===========================================================================
    // OTHER FUNCTIONS:
    
    //void stopAll() {
    //  for (Movie m : mov) {
    //    m.stop();
    //    m.jump(0);
    //  }
    //  targetTime=-1;
    //}
    
    void playOne(int idx) {
      mov[idx].play();
      delay(20);
      targetTime=20+millis()+int(mov[idx].duration()*1000);    //Time in msecs: current mscs + delay + movie's duration 
      println("Time schedule: " + millis() +" -> "+targetTime+" msec");
    
      println("Now playing " + currentMovie);
    }
    
    void serialEvent(Serial myPort) {
    
      ////ONLY process serial data if no movie is being played
      //if (current!=NOMOVIE)
        //return;
    
      // read the serial buffer:
      String myString = myPort.readStringUntil(lineFeed);
    
      // if you got any bytes other than the linefeed:
      if (myString != null) {
    
        myString = trim(myString);
    
        // split the string at the commas
        // and convert the sections into integers:
    
        pSensors = sensors;
        sensors = int(split(myString, ','));
    
        // print out the values you got:
    
        for (int sensorNum = 0; sensorNum < sensors.length; sensorNum++) {
          print("Sensor " + sensorNum + ": " + sensors[sensorNum] + "\t");
        }
    
        // add a linefeed after all the sensor values are printed:
        println();
    
        processInputData(sensors);
      }
    }
    
    
    
    void processInputData(int[] sensors) {
    
      //ONLY process serial data if no movie is being played
      if (current!=NOMOVIE) {
        println("Action blocked: A movie is still been played!");
        return;
      }
    
      if (sensors[MOVIE1] == 1) {
        updateCurrentMovie(MOVIE1);
      } else if (sensors[MOVIE2] == 1) {
        updateCurrentMovie(MOVIE2);
      } else if (sensors[MOVIE3] == 1) {
        updateCurrentMovie(MOVIE3);
      } else {
        updateCurrentMovie(NOMOVIE);
        println("Received data: Nothing to do (" + currentMovie+")");
      }
    
      if (current!=NOMOVIE)
        playOne(current);
    }
    
    void updateCurrentMovie(int c) {
      current=c;
      currentMovie = current==NOMOVIE?" No movie selected":"movie"+(current+1);
      surface.setTitle(currentMovie);
    }
    

    This started to play the video when a sensor was activated and also made it so no other video would play once a movie had started which is what I wanted. The only problem is that at the end of some of the videos it wouldn't fully end (seemed like it froze on the last frame and didn't go back to a black background) Then when trying to play the same video again it would just be the same screen (last frame of video) without any audio either. I couldn't play another video within this time as it says it is blocking the action as apparently a movie is being played.

    I actually timed the duration it takes for this frozen image to stop and allow me to play another video and it is near the same duration of the video that it froze on. So I think it is playing the video again but it's just a frozen image instead of the video. I've only tested it with 3 sensors and 3 videos and it's only freezing on the second one currently. I'm going to wire all the sensors and videos up and then see if it's only one that's affected.

    Other than this problem I think it's working properly, apart from every other time I run the sketch it says
    Error, disabling serialEvent() for /dev/tty.usbmodem1411 null But this isn't a big issue as it usually works when I run it again. Just not sure why the video messes up for that one video. I'll wire the rest up and post if I get any additional problems with it.

  • My first kick at the can would be to replace the second video with another video to rule out the integrity of the video to be the problem. So you don't experience frame freezing for video 1 or 3 at all?

    Related to disabling the event... not sure what could be the problem. It could be the structure of the data that you are streaming from your arduino. Are you sending data continuously from your arduino within the loop() function?

    Kf

  • You can also enable the keyReleased testing block and see how your movies play. If they play ok, then one can infer the problem resides in the serial data processing part.

    Kf

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