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How to connect a webcam or not. Using java

How to determine if a webcam is connected to a computer or not using Java?

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JMF ( Java Media Framework ) should be able to detect any media including a webcam.

Potentially through CaptureDeviceManager.getDeviceList();

To "install JMF on Linux" one way is as follows:



  • download .
  • Change directories to the installation location.
  • Run the command

:

  % /bin/sh ./jmf-2_1_1e-linux-i586.bin
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Here is a piece of code I am using in a simple webcam client with JMF:

Format format = new RGBFormat();
MediaLocator cameraLocator = null;
// get device list
Vector deviceList = CaptureDeviceManager.getDeviceList(format);
// if devices available
if(deviceList != null && deviceList.size() > 0) {
  // pick first
  CaptureDeviceInfo device = (CaptureDeviceInfo) deviceList.get(0);
  cameraLocator = device.getLocator();
}


He chooses the first available webcam. Of course, after the webcam, you can save the CameraLocator and try to reopen it in a second run.

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