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• how to stop a function from a button in tkinter

  11 mars 2020, par Cb9867

  I am trying to record audio from microphone in python with the help of ffmpeg.

  By using this i am able to record voice but how can i stop this function by clicking of a button.

  to stop this now i am terminating the IDLE forcefully.

  import os
  
  import subprocess
  
  import tkinter as tk
  
  from tkinter import *
  
  root = Tk()
  
  os.chdir('C://Users/ravir/desktop/')
  
  def recording_voice():
  
    global p
  
    p=subprocess.Popen('ffmpeg -f dshow -i audio="Microphone (2- High Definition Audio Device)" sample.mp3' )
  
  
  
  def stop_rec():  # ho to stop this ???
  
      p.terminate()
  
  
  
  rec_btn = Button(text='Start Recording', width=20, command=recording_voice)
  
  rec_btn.pack()
  
  
  
  stop_btn = Button(text='Stop Recording', width=20, command=stop_rec)
  
  stop_btn.pack()
  
  
  
  root.mainloop()

• UnsatisfiedLinkError for armeabi with Android Studio on Ubuntu but with Android Studio on Windows it works

  14 juillet 2015, par dddog

  I’m working at an Android app that uses ffmpeg-android-arm.jar who contains native libs for video/audio encoding.
  My native libs are included in the project by copying the ffmpeg-android-arm.jar in the app/libs folder. ffmpeg-android-arm.jar is just an archive having the following folder structure lib/armeabi/ and in the armeabi folder being all the native libs as .so files.

  Building the apk using Android Studio on Windows 8 works just fine, the statement bellow, being the first that wants to load a native library working well.

  //neon library optimized for opencv
  
  static {
  
      Log.d(TAG, "about to load library checkneon...");
  
      try {
  
          System.loadLibrary("checkneon");
  
      } catch (Exception e) {
  
          e.printStackTrace();
  
      } catch (Error error) {
  
          error.printStackTrace(System.out);
  
      }
  
      Log.d(TAG, "library checkneon loaded!");
  
  }

  Going on Android Studio running on Ubuntu 14.04.02, I’m unable to make my project run, as I keep receiving java.lang.UnsatisfiedLinkError. See the stack trace bellow :

  07-14 20:41:05.616  17018-17018/? D/dalvikvm﹕ Late-enabling CheckJNI
  
  07-14 20:41:05.786  17018-17018/org.myfrogvrvp8 D/RecordActivity﹕ about to load library checkneon...
  
  07-14 20:41:05.786  17018-17018/org.myfrogvrvp8 I/System.out﹕ java.lang.UnsatisfiedLinkError: Couldn't load checkneon from loader dalvik.system.PathClassLoader[dexPath=/data/app/org.myfrogvrvp8-2.apk,libraryPath=/data/app-lib/org.myfrogvrvp8-2]: findLibrary returned null
  
  07-14 20:41:05.791  17018-17018/org.myfrogvrvp8 I/System.out﹕ at java.lang.Runtime.loadLibrary(Runtime.java:355)
  
  07-14 20:41:05.791  17018-17018/org.myfrogvrvp8 I/System.out﹕ at java.lang.System.loadLibrary(System.java:525)
  
  07-14 20:41:05.791  17018-17018/org.myfrogvrvp8 I/System.out﹕ at org.myfrogvrvp8.FFmpegRecorderActivity.<clinit>(FFmpegRecorderActivity.java:189)
  
  07-14 20:41:05.791  17018-17018/org.myfrogvrvp8 I/System.out﹕ at java.lang.Class.newInstanceImpl(Native Method)
  
  07-14 20:41:05.791  17018-17018/org.myfrogvrvp8 I/System.out﹕ at java.lang.Class.newInstance(Class.java:1130)
  
  07-14 20:41:05.791  17018-17018/org.myfrogvrvp8 I/System.out﹕ at android.app.Instrumentation.newActivity(Instrumentation.java:1078)
  
  07-14 20:41:05.791  17018-17018/org.myfrogvrvp8 I/System.out﹕ at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2210)
  
  07-14 20:41:05.791  17018-17018/org.myfrogvrvp8 I/System.out﹕ at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2349)
  
  07-14 20:41:05.791  17018-17018/org.myfrogvrvp8 I/System.out﹕ at android.app.ActivityThread.access$700(ActivityThread.java:159)
  
  07-14 20:41:05.791  17018-17018/org.myfrogvrvp8 I/System.out﹕ at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1316)
  
  07-14 20:41:05.791  17018-17018/org.myfrogvrvp8 I/System.out﹕ at android.os.Handler.dispatchMessage(Handler.java:99)
  
  07-14 20:41:05.791  17018-17018/org.myfrogvrvp8 I/System.out﹕ at android.os.Looper.loop(Looper.java:176)
  
  07-14 20:41:05.791  17018-17018/org.myfrogvrvp8 I/System.out﹕ at android.app.ActivityThread.main(ActivityThread.java:5419)
  
  07-14 20:41:05.791  17018-17018/org.myfrogvrvp8 I/System.out﹕ at java.lang.reflect.Method.invokeNative(Native Method)
  
  07-14 20:41:05.791  17018-17018/org.myfrogvrvp8 I/System.out﹕ at java.lang.reflect.Method.invoke(Method.java:525)
  
  07-14 20:41:05.796  17018-17018/org.myfrogvrvp8 I/System.out﹕ at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1046)
  
  07-14 20:41:05.796  17018-17018/org.myfrogvrvp8 I/System.out﹕ at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:862)
  
  07-14 20:41:05.796  17018-17018/org.myfrogvrvp8 I/System.out﹕ at dalvik.system.NativeStart.main(Native Method)
  
  </clinit>

  I’ve checked both apks, and they both have the native .so files included in the lib/armeabi folder.

  I’m quite puzzled...
  Any help much appreciated !

• File input button CSS fixes for IE7+IE6.

  9 février 2012, par Sebastian Tschan

  m index.html File input button CSS fixes for IE7+IE6.