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Getting Volume Controls
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Getting Volume Controls


  • Subject: Getting Volume Controls
  • From: "bryan" <email@hidden>
  • Date: Sat, 18 Sep 2004 11:56:40 -0700

I am using the Java CoreAudio classes, and I want to be able to read the
volume on the default input and output devices, but I am running into
problems:

// query for the input device -- succeeds
AudioDevice device = AudioHardware.getDefaultInputDevice();

// create a memory object to hold the Float32
CAMemoryObject propVal = new CAMemoryObject(4,true);

// query for the volume -- fails with kAudioHardwareUnknownPropertyError
device.getInputProperty(0,AHConstants.kAudioDevicePropertyVolumeScalar,propVal);

I have also tried to query for kAudioDevicePropertyVolumeDecibels with the
same result.

Any idea what I am missing?

Thanks,
Bryan

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  • Follow-Ups:
    • Re: Getting Volume Controls
      • From: Jeff Moore <email@hidden>
References: 
 >Explanation of AudioFileWritePackets (From: Alexander Dvorak <email@hidden>)

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