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• Can't play at a good framerate with JavaAV

  31 mars 2017, par TW2

  I have a problem in framerate when I use JavaAV (which use JavaCPP + ffmpeg). When I set my framerate as mentionned at DemuxerExample.java, the frame change each 47000ms which is too long and false. It’s better when I set 1000 / demuxer.getFrameRate() * 1000 ( 47ms) but it’s also false. I can’t have a good framerate. Here is my player class :

  package gr.av;
  
  
  
  import hoary.javaav.Audio;
  
  import hoary.javaav.AudioFrame;
  
  import hoary.javaav.Demuxer;
  
  import hoary.javaav.Image;
  
  import hoary.javaav.JavaAVException;
  
  import hoary.javaav.MediaFrame;
  
  import hoary.javaav.VideoFrame;
  
  import java.awt.Color;
  
  import java.awt.Graphics;
  
  import java.awt.image.BufferedImage;
  
  import java.io.ByteArrayInputStream;
  
  import java.io.ByteArrayOutputStream;
  
  import java.io.IOException;
  
  import java.util.logging.Level;
  
  import java.util.logging.Logger;
  
  import javax.sound.sampled.AudioFormat;
  
  import javax.sound.sampled.AudioInputStream;
  
  import javax.sound.sampled.AudioSystem;
  
  import javax.sound.sampled.DataLine;
  
  import javax.sound.sampled.LineUnavailableException;
  
  import javax.sound.sampled.SourceDataLine;
  
  import javax.sound.sampled.UnsupportedAudioFileException;
  
  import javax.swing.JPanel;
  
  
  
  public class Player extends JPanel {
  
  
  
      VideoThread videoTHREAD;
  
      AudioThread audioTHREAD;
  
      BufferedImage img = null;
  
  
  
      public Player() {
  
          init();
  
      }
  
  
  
      private void init(){        
  
          videoTHREAD = new VideoThread(this);
  
          audioTHREAD = new AudioThread();
  
      }
  
  
  
      public void setImage(BufferedImage img){
  
          this.img = img;
  
          repaint();
  
      }
  
  
  
      @Override
  
      public void paint(Graphics g){
  
          if(img != null){
  
              g.drawImage(img, 0, 0, null);
  
          }else{
  
              g.setColor(Color.blue);
  
              g.fillRect(0, 0, getWidth(), getHeight());
  
          }
  
      }
  
  
  
      public void setFilename(String filename){
  
          videoTHREAD.setFilename(filename);
  
          audioTHREAD.setFilename(filename);
  
      }
  
  
  
      public void play(){
  
          videoTHREAD.playThread();
  
          audioTHREAD.playThread();
  
      }
  
  
  
      public void stop(){
  
          videoTHREAD.stopThread();
  
          audioTHREAD.stopThread();
  
      }
  
  
  
      public static class VideoThread extends Thread {
  
  
  
          //The video filename and a controller
  
          String filename = null;
  
          private volatile boolean active = false;
  
  
  
          //Panel to see video
  
          Player player;
  
  
  
          public VideoThread(Player player) {
  
              this.player = player;
  
          }
  
  
  
          public void setFilename(String filename){
  
              this.filename = filename;
  
          }
  
  
  
          public void playThread(){
  
              if(filename != null && active == false){
  
                  active = true;
  
                  this.start();
  
              }
  
          }
  
  
  
          public void stopThread(){
  
              if(active == true){
  
                  active = false;
  
                  this.interrupt();
  
              }            
  
          }
  
  
  
          public void video() throws JavaAVException, InterruptedException, IOException, UnsupportedAudioFileException{            
  
              Demuxer demuxer = new Demuxer();
  
              demuxer.open(filename);
  
  
  
              MediaFrame mediaFrame;
  
              while (active && (mediaFrame = demuxer.readFrame()) != null) {
  
                  if (mediaFrame.getType() == MediaFrame.Type.VIDEO) {
  
  
  
                      VideoFrame videoFrame = (VideoFrame) mediaFrame;
  
  
  
                      player.setImage(Image.createImage(videoFrame, BufferedImage.TYPE_3BYTE_BGR));
  
  
  
                      double FPS = demuxer.getFrameRate() * 1000d;
  
                      long ms = (long)(1000d / FPS);
  
                      System.out.println("FPS = " + FPS + " ; Milliseconds = " + ms);
  
                      java.util.concurrent.TimeUnit.MILLISECONDS.sleep(ms);
  
                  }
  
              }
  
              demuxer.close();
  
          }
  
  
  
          @Override
  
          public void run() {
  
              if(filename != null){
  
                  try {
  
                      video();
  
                  } catch (JavaAVException | InterruptedException | IOException | UnsupportedAudioFileException ex) {
  
                         Logger.getLogger(Player.class.getName()).log(Level.SEVERE, null, ex);
  
                  }
  
              }
  
          }
  
  
  
      }
  
  
  
      public static class AudioThread extends Thread {
  
  
  
          //The video filename and a controller
  
          String filename = null;
  
          private volatile boolean active = false;
  
  
  
          //Audio
  
          AudioFormat format = new AudioFormat(44000, 16, 2, true, false);
  
          AudioInputStream ais;
  
          DataLine.Info info = new DataLine.Info(SourceDataLine.class, format);
  
          SourceDataLine soundLine;
  
  
  
          public AudioThread() {            
  
          }
  
  
  
          public void setFilename(String filename){
  
              this.filename = filename;
  
          }
  
  
  
          public void playThread(){
  
              if(filename != null && active == false){
  
                  active = true;
  
                  soundON();
  
                  this.start();
  
              }
  
          }
  
  
  
          public void stopThread(){
  
              if(active == true){
  
                  active = false;
  
                  soundOFF();
  
                  this.interrupt();
  
              }            
  
          }
  
  
  
          public void audio() throws JavaAVException, IOException {            
  
              Demuxer demuxer = new Demuxer();
  
              demuxer.open(filename);
  
  
  
              MediaFrame mediaFrame;
  
              while (active && (mediaFrame = demuxer.readFrame()) != null) {
  
                  if (mediaFrame.getType() == MediaFrame.Type.AUDIO) {
  
                      AudioFrame audioFrame = (AudioFrame) mediaFrame;
  
                      byte[] bytes = Audio.getAudio16(audioFrame);
  
  
  
                      try (ByteArrayInputStream bais = new ByteArrayInputStream(bytes)) {
  
                          ais = new AudioInputStream(bais, format, bytes.length / format.getFrameSize());
  
                          try (ByteArrayOutputStream baos = new ByteArrayOutputStream()) {
  
                              int nBufferSize = bytes.length * format.getFrameSize();
  
                              byte[] abBuffer = new byte[nBufferSize];
  
  
  
                              while (true){
  
                                  int nBytesRead = ais.read(abBuffer);
  
                                  if (nBytesRead == -1)
  
                                      break;
  
  
  
                                  baos.write(abBuffer, 0, nBytesRead);
  
                              }
  
  
  
                              byte[] abAudioData = baos.toByteArray();
  
                              soundLine.write(abAudioData, 0, abAudioData.length);
  
                          }
  
                          ais.close();
  
                      }
  
  
  
                  }
  
              }
  
  
  
              demuxer.close();
  
          }
  
  
  
          @Override
  
          public void run() {
  
              if(filename != null){
  
                  try {
  
                      audio();
  
                  } catch (JavaAVException | IOException ex) {
  
                      Logger.getLogger(Player.class.getName()).log(Level.SEVERE, null, ex);
  
                  }
  
              }
  
          }
  
  
  
          private void soundON(){
  
              try {
  
                  soundLine = (SourceDataLine) AudioSystem.getLine(info);
  
                  soundLine.open(format);
  
                  soundLine.start();
  
              } catch (LineUnavailableException ex) {
  
                  Logger.getLogger(Player.class.getName()).log(Level.SEVERE, null, ex);
  
              }
  
          }
  
  
  
          private void soundOFF(){
  
              soundLine.drain();
  
              soundLine.stop();
  
              soundLine.close();
  
          }
  
  
  
      }
  
  
  
  }

• Specifying FFMPEG in the requirements section of 'buildozer.spec' causing [libavformat/network.o] Error 1

  18 juillet 2022, par GJ78

  My question relates to how to mitigate an ffmpeg requirement listed in a buildozer.spec that is causing compile errors using buildozer.

  



  GOAL :

  



  Using buildozer to ensure FFMPEG can be embedded within a small Kivy app so i can utilise youtube_dl functionality on my android phone.

  



  THE ISSUE :
Specifying FFMPEG in the requirements section of 'buildozer.spec' causes the following error message :
  
common.mak:60 : recipe for target 'libavformat/network.o' failed
  
make : [libavformat/network.o] Error 1
  
make : Waiting for unfinished jobs...

  



  What have I done to resolve myself :
  
1. Ensured LOG LEVEL 2 is specified.

  



  


  2. Upgraded cython from Version 21 to 27. Then downgraded to 25, then 21 then 20 to see if this resolved anything. It didn't.

  


  3. In BUILDOZER.SPEC, switched between Android NDK crystax-ndk-10.3.2 and android-ndk-r16b. (Note have reverted back to Crystax 10.3.2) in my NDK PATH.

  


  4. In BUILDOZER.SPEC, changed android.api from 19 to 15 (just to see if this has any positive effects).

  


  5. executed : rm -Rf .buildozer between each compiling attempt.

  


  6. Part extract of Buildozer.log :

     



     In file included from libavformat/dump.c:37:0 :
     
libavformat/avformat.h:893:21 : note : declared here
     
 AVCodecContext codec ;
 ^
     
CC libavformat/format.o
     
CC libavformat/golomb_tab.o
     
CC libavformat/h264dec.o
     
CC libavformat/hevc.o
     
CC libavformat/http.o
     
CC libavformat/httpauth.o
     
CC libavformat/id3v1.o
     
CC libavformat/id3v2.o
     
CC libavformat/img2.o
     
CC libavformat/isom.o
     
CC libavformat/log2_tab.o
     
CC libavformat/m4vdec.o
     
CC libavformat/metadata.o
CC libavformat/mov_chan.o
     
CC libavformat/mov.o
     
CC libavformat/movenc.o
     
CC libavformat/movenccenc.o
     
CC libavformat/movenchint.o
     
CC libavformat/mpegvideodec.o
     
CC libavformat/mux.o
     
CC libavformat/network.o
     
In file included from libavformat/network.h:29:0,
     
 from libavformat/network.c:22 :
     
libavformat/os_support.h:67:32 : error : expected declaration specifiers or '...' before '(' token
     
 # define lseek(f,p,w) lseek64((f), (p), (w))
     
 ^
libavformat/os_support.h:67:37 : error : expected declaration specifiers or '...' before '(' token
     
 # define lseek(f,p,w) lseek64((f), (p), (w))
     
 ^
libavformat/os_support.h:67:42 : error : expected declaration specifiers or '...' before '(' token
     
 # define lseek(f,p,w) lseek64((f), (p), (w))
     
 ^
common.mak:60 : recipe for target 'libavformat/network.o' failed
     
make : [libavformat/network.o] Error 1
     
make : * Waiting for unfinished jobs....

  


  7. Part extract of Buildozer.spec

     



     (str) Title of your application

     



     title = myapplication

     



     (str) Package name

     



     package.name = myapp

     



     (str) Package domain (needed for android/ios packaging)

     



     package.domain = org.test

     



     (str) Source code where the main.py live

     



     source.dir = .

     



     (list) Source files to include (let empty to include all the files)

     



     source.include_exts = py,png,jpg,kv,atlas

     



     (list) List of inclusions using pattern matching

     



     source.include_patterns = assets/,images/.png

     



     (list) Source files to exclude (let empty to not exclude anything)

     



     source.exclude_exts = spec

     



     (list) List of directory to exclude (let empty to not exclude anything)

     



     source.exclude_dirs = tests, bin

     



     (list) List of exclusions using pattern matching

     



     source.exclude_patterns = license,images//.jpg

     



     (str) Application versioning (method 1)

     



     version = 0.1

     



     (str) Application versioning (method 2)

     



     version.regex = version = '"['"]

     



     version.filename = %(source.dir)s/main.py

     



     (list) Application requirements

     



     comma seperated e.g. requirements = sqlite3,kivy

     



     requirements = ffmpeg,python2,hostpython2,kivy,youtube-dl

     



     (str) Custom source folders for requirements

     



     Sets custom source for any requirements with recipes

     



     requirements.source.kivy = ../../kivy

     



     (list) Garden requirements

     



     garden_requirements =

     



     (str) Presplash of the application

     



     presplash.filename = %(source.dir)s/data/presplash.png

     



     (str) Icon of the application

     



     icon.filename = %(source.dir)s/data/icon.png

     



     (str) Supported orientation (one of landscape, portrait or all)

     



     orientation = portrait

     



     (list) List of service to declare

     



     services = NAME:ENTRYPOINT_TO_PY,NAME2:ENTRYPOINT2_TO_PY

     



     OSX Specific

     



     author = © Copyright Info

     



     change the major version of python used by the app

     



     osx.python_version = 3

     



     Kivy version to use

     



     osx.kivy_version = 1.9.1

     



     Android specific

     



     (bool) Indicate if the application should be fullscreen or not

     



     fullscreen = 0

     



     (string) Presplash background color (for new android toolchain)

     



     Supported formats are : #RRGGBB #AARRGGBB or one of the following names :

     



     red, blue, green, black, white, gray, cyan, magenta, yellow, lightgray,

     



     darkgray, grey, lightgrey, darkgrey, aqua, fuchsia, lime, maroon, navy,

     



     olive, purple, silver, teal.

     



     android.presplash_color = #FFFFFF

     



     (list) Permissions

     



     android.permissions = INTERNET

     



     (int) Android API to use

     



     android.api = 19

     



     (int) Minimum API required

     



     android.minapi = 9

     



     (int) Android SDK version to use

     



     android.sdk = 20

     



     (str) Android NDK version to use

     



     android.ndk = 10.3.2

     



     (bool) Use —private data storage (True) or —dir public storage (False)

     



     android.private_storage = True

     



     (str) Android NDK directory (if empty, it will be automatically downloaded.)

     



     android.ndk_path = /home/gjones/Downloads/crystax-ndk-10.3.2

     



     (str) Android SDK directory (if empty, it will be automatically downloaded.)

     



     android.sdk_path =

     



     (str) ANT directory (if empty, it will be automatically downloaded.)

     



     android.ant_path =

  


  8. Lastly, when I remove ffmpeg from requirements in buildozer.spec, the .APK compiles successfully and i can deploy it on to my phone with the KIVY GUI. Obviously, ffmpeg functionality is not present.

  


  



  Current Environment Specs :

  



  

  1. Running Linux Mint 17.2 as a Virtual Box VM

  


  2. Buildozer Version : 0.35dev

  


  3. Cython Version : 0.25

  


  



  Any advice would be greatly appreciated.

  



  Lastly, if there is no obvious solution via buildozer, do i need to compile ffmpeg for Android separately and somehow include this somewhere in the buildozer spec file to prevent this error message ?

  



  Thanks in advance.

  


• Creating buttons with Imagick

  9 juin 2010, par Mikko Koppanen — Imagick, PHP stuff

  A fellow called kakapo asked me to create a button with Imagick. He had an image of the button and a Photoshop tutorial but unfortunately the tutorial was in Chinese. My Chinese is a bit rusty so it will take a little longer to create that specific button

  The button in this example is created after this tutorial http://xeonfx.com/tutorials/easy-button-tutorial/ (yes, I googled “easy button tutorial”). The code and the button it creates are both very simple but the effect looks really nice.

  Here we go with the code :

  php

  < view plain text >

  1. < ?php
  2.  
  3. /* Create a new Imagick object */
  4. $im = new Imagick() ;
  5.  
  6. /* Create empty canvas */
  7. $im->newImage( 200, 200, "white", "png" ) ;
  8.  
  9. /* Create the object used to draw */
  10. $draw = new ImagickDraw() ;
  11.  
  12. /* Set the button color.
  13.   Changing this value changes the color of the button */
  14. $draw->setFillColor( "#4096EE" ) ;
  15.  
  16. /* Create the outer circle */
  17. $draw->circle( 50, 50, 70, 70 ) ;
  18.  
  19. /* Create the smaller circle on the button */
  20. $draw->setFillColor( "white" ) ;
  21.  
  22. /* Semi-opaque fill */
  23. $draw->setFillAlpha( 0.2 ) ;
  24.  
  25. /* Draw the circle */
  26. $draw->circle( 50, 50, 68, 68 ) ;
  27.  
  28. /* Set the font */
  29. $draw->setFont( "./test1.ttf" ) ;
  30.  
  31. /* This is the alpha value used to annotate */
  32. $draw->setFillAlpha( 0.17 ) ;
  33.  
  34. /* Draw a curve on the button with 17% opaque fill */
  35. $draw->bezier( array(
  36.           array( "x" => 10 , "y" => 25 ),
  37.           array( "x" => 39, "y" => 49 ),
  38.           array( "x" => 60, "y" => 55 ),
  39.           array( "x" => 75, "y" => 70 ),
  40.           array( "x" => 100, "y" => 70 ),
  41.           array( "x" => 100, "y" => 10 ),
  42.          ) ) ;
  43.  
  44. /* Render all pending operations on the image */       
  45. $im->drawImage( $draw ) ;
  46.  
  47. /* Set fill to fully opaque */
  48. $draw->setFillAlpha( 1 ) ;
  49.  
  50. /* Set the font size to 30 */
  51. $draw->setFontSize( 30 ) ;
  52.  
  53. /* The text on the */
  54. $draw->setFillColor( "white" ) ;
  55.  
  56. /* Annotate the text */
  57. $im->annotateImage( $draw, 38, 55, 0, "go" ) ;
  58.  
  59. /* Trim extra area out of the image */
  60. $im->trimImage( 0 ) ;
  61.  
  62. /* Output the image */
  63. header( "Content-Type : image/png" ) ;
  64. echo $im ;
  65.  
  66.  ?>

  And here is a few buttons I created by changing the fill color value :