B4J Question Beep on raspberry

[fishwolf]

I'm tring this code for play a beep (or sound) on raspberry

https://www.b4x.com/android/forum/threads/beep.35661/#post-209569

but doesn't work, i have checked play function with aplay.

 

[Erel]

This means that this API is not supported on Raspberry Pi.

 

[micro]

I use a shell with aplay app inside in raspebrry and a clip audio for simulate a beep

Dim js As  Shell
js.Initialize("", "aplay", Array As String(File.DirApp & "/Audio/" & clip))
js.Run(-1)

 

[Erel]

Try this code:

Sub PlayFile(Dir As String, FileName As String)
   Dim audioSystem As JavaObject
   audioSystem.InitializeStatic("javax.sound.sampled.AudioSystem")
   Dim f As JavaObject
   f.InitializeNewInstance("java.io.File", Array(Dir, FileName))
   Dim in As JavaObject = audioSystem.RunMethod("getAudioInputStream", Array(f))
   Dim clip As JavaObject = audioSystem.RunMethod("getClip", Null)
   clip.RunMethod("open", Array(in))
   clip.RunMethod("start", Null)
   in.RunMethod("close", Null)
End Sub

It works on the PC. I haven't tried it on the RPi.

 

[fishwolf]

Thanks

work fine both solutions

is it possible put the audio file in Project folder (File)?

i have try to set DirAssets and DirAp, but doen't find the file.
i have also try to copy in temp dir

 

[Erel]

You will need to copy it to a different folder (it should work from DirTemp).

 

[fishwolf]

Try this code:

Sub PlayFile(Dir As String, FileName As String)
   Dim audioSystem As JavaObject
   audioSystem.InitializeStatic("javax.sound.sampled.AudioSystem")
   Dim f As JavaObject
   f.InitializeNewInstance("java.io.File", Array(Dir, FileName))
   Dim in As JavaObject = audioSystem.RunMethod("getAudioInputStream", Array(f))
   Dim clip As JavaObject = audioSystem.RunMethod("getClip", Null)
   clip.RunMethod("open", Array(in))
   clip.RunMethod("start", Null)
   in.RunMethod("close", Null)
End Sub

It works on the PC. I haven't tried it on the RPi.

after 7-8 times, return this error

Error occurred on line: 113 (Main)
java.lang.reflect.InvocationTargetException
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:497)
   at anywheresoftware.b4j.object.JavaObject.RunMethod(JavaObject.java:131)
   at b4j.example.main._playfile(main.java:171)
   at b4j.example.main._timersimul_tick(main.java:256)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:497)
   at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:607)
   at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:228)
   at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:158)
   at sun.reflect.GeneratedMethodAcc
essor1.invoke(Unknown Source)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:497)
   at anywheresoftware.b4a.BA.raiseEvent2(BA.java:93)
   at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:90)
   at anywheresoftware.b4a.objects.Timer$TickTack$1.run(Timer.java:118)
   at anywheresoftware.b4a.keywords.SimpleMessageLoop.runMessageLoop(SimpleMessageLoop.java:30)
   at anywheresoftware.b4a.StandardBA.startMessageLoop(StandardBA.java:26)
   at anywheresoftware.b4a.ShellBA.startMessageLoop(ShellBA.java:111)
   at anywheresoftware.b4a.keywords.Common.StartMessageLoop(Common.java:131)
   at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:300)
   at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:158)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImp
l.java:43)
   at java.lang.reflect.Method.invoke(Method.java:497)
   at anywheresoftware.b4a.BA.raiseEvent2(BA.java:93)
   at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:90)
   at anywheresoftware.b4a.BA.raiseEvent(BA.java:84)
   at b4j.example.main.main(main.java:29)
Caused by: java.lang.IllegalArgumentException: No line matching interface Clip supporting format PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, big-endian is supported.
   at javax.sound.sampled.AudioSystem.getLine(AudioSystem.java:479)
   at javax.sound.sampled.AudioSystem.getClip(AudioSystem.java:522)
   ... 34 more

 

[Erel]

Does it also happen when you test it on the PC?