Help with video

[the-shrek1]

Is there way to play a video on the VEX5 robot brain ?

[Sylvie]

You can display GIF images on the brain, and using LVGL I’m sure there’s a way to make a video player.

Animated GIF Demo (VEXcode)

Hers’s another demo that can be built with VEXcode. It’s not very well developed and uses a couple of C API’s that we don’t usually expose that were added to vexos 1.0.5. I’ll also explain a couple of more advanced aspects of the setup in another post later, specifically how to allow VEXcode access to more dynamic memory than is available with the default project build scripts. output looks like this. [gifdemo] and uses this animated gif. [world] You can display more than one gif by creat…

[jpearman]

we do not provide that as a standard capability, it can be done, but not trivial.

Happy Holidays 2018 V5

[Noah10851B]

Was that a 28 second video on the brain?

[jpearman]

so that was an 8 second clip from something I found on vimeo.

fireplace -1971

I converted that into an image sequence. placed the frames on an SD Card and then wrote a small program (just a hack, the code is not pretty ) to play the frames. They were read into memory first.

fireplace demo

//
//  main.cpp
//
//  Created by <user> on Mon Dec 24 2018.
//  Copyright (C) 2018 <team>. All rights reserved.
//

#include <stdio.h>

#include "v5.h"
#include "v5_vcs.h"

using namespace vex;

brain Brain;

uint8_t   imageBuffer[ 240 * (128 * 1024) ];
uint32_t  imageBufferLen[240];

void
fireplaceInit() {
  char  filename[32];
  
  Brain.Screen.clearScreen();
  for(int file=0;file<240;file++) {
    int offset = file * (128 * 1024);
    sprintf(filename,"images/fire_%05d.png", file );
    imageBufferLen[file] = Brain.SDcard.loadfile( filename, &imageBuffer[offset], 128 * 1024 );
    Brain.Screen.printAt( 10, 20, "Loading.. %3d", file );
  }    
}


void
fireplace() {
  int   file = 0;
  char  banner[] = "Happy Holidays 2018";
  int   pos1 = 480;
  int   pos2 = 960;

  fireplaceInit();
  
  Brain.Screen.setFont( fontType::prop40 );
  Brain.Screen.setPenColor( color::red );

  while(1) {
  Brain.Screen.clearScreen();
    int offset = file * (128 * 1024);
    
    Brain.Screen.drawImageFromBuffer(&imageBuffer[offset], 0, 0, imageBufferLen[file]);
    Brain.Screen.setPenColor( color::red );
    Brain.Screen.printAt( pos1, 40, false, banner);
    Brain.Screen.setPenColor( color::green );
    Brain.Screen.printAt( pos2, 40, false, banner);
    Brain.Screen.render();

    file ++;
    if(file == 239 )
      file = 3;
      
    pos1-=4;
    if( pos1 < -480 )
      pos1 = 480;    
    pos2-=4;
    if( pos2 < -480 )
      pos2 = 480;    
  }
}

int main() {
  int count = 0;
  
  fireplace();
  
  while(1) {
    Brain.Screen.printAt( 10, 50, "Hello %d", count++ );
    // Allow other tasks to run
    this_thread::sleep_for(10);
  }
}