Problem with Capture Device Formats

Question

Hi!, i have 2 questions:
On Windows the direction of the camera that is connected is: vfw:Microsoft WDM Image Capture (Win32):0
What is the direction on Linux?
And the second:
In some PCs (only two), when I try get the camera's supported formats, I don´t get any, but if I run the JMF Studio if I displayed, why can it be?
the code is:
public Vector ObtenerFormatosSopotados() throws NoDataSourceException, IOException{
               Vector<Format> vectorFormatos = new Vector<Format>();
                    //comprobamos que el origen de datos en un dispositivo de captura(webcam)
                     if (this.origenDatos instanceof CaptureDevice) {
                           FormatControl[] fcs = ((CaptureDevice) this.origenDatos).getFormatControls();
                           for (FormatControl fc : fcs) {
                               Format[] formats = ((FormatControl) fc).getSupportedFormats();
                               for (Format format : formats) {
                                    if(format instanceof RGBFormat)
                                         vectorFormatos.add(format);
               return vectorFormatos;
          }In the most of PCs I've had no problems, the RGB Formats are show.
Thank!!
Edited by: NickNN5 on Jun 12, 2010 2:00 AM

Answer 1

NickNN5 wrote:
Hi!, i have 2 questions:
On Windows the direction of the camera that is connected is: vfw:Microsoft WDM Image Capture (Win32):0
On Windows, you should use "vfw://0" if you're hard-coding the media locator...
What is the direction on Linux?On Linux, you should use "vfl://0" if you're hard-coding the media locator...
In some PCs (only two), when I try get the camera's supported formats, I don´t get any, but if I run the JMF Studio if I displayed, why can it be?It'd be helpful if you specified how deep into your code the failure states reach. For instance, it's a much different issue if (this.origenDatos instanceof CaptureDevice) fails than if you aren't getting any format controls or if you're not getting any supported formats.
With the amount of information I have, I'm going to suggest you don't have JMF installed correctly / linked correctly on those failure machines.