Cant access Front (Device) Camera

Question

I am accessing the device camera with the following lines of code:

 for (int cameraIndex = 0; cameraIndex < WebCamTexture.devices.Length; cameraIndex++) {
     if (WebCamTexture.devices[cameraIndex].isFrontFacing == true) {
         webCameraTexture    =    new WebCamTexture(cameraIndex, Screen.width, Screen.height);
     }
 }
 cameraFrame.renderer.material.mainTexture = webCameraTexture;
 webCameraTexture.Play();

But I couldn't access the front camera in both iOS and Android by checking for isFrontFacing flag. Logging the WebCamTexture.devices array returns 2 devices one with isFrontFacing = true and other with isFrontFacing = false. But the new WebCamTexture seems to be linked to the back camera in both the cases.

I am using Unity 4.3.0f4.

Answer 1

Best Answer

Answer by flamy · Feb 06, 2014 at 06:23 AM

you are actually creating a webcam texture when the device of certain index is front facing, which is nothing but same as creating a webcamtexture new WebCamTexture(cameraIndex, Screen.width, Screen.height); this line.

Instead you have to create the webcamtexture and set the target device to listen to inside tht for loop. the below is the sample that might work . I havnt tested it in device though. But i am positive it should work

  WebCamDevice[] devices = WebCamTexture.devices;
  
  foreach(WebcamDevice cam in devices)
  {
     if(cam.isFrontFacing )
     {    
         webCameraTexture  =    new WebCamTexture(cameraIndex, Screen.width, Screen.height);
         webCameraTexture.deviceName  = cam.name;
         webCameraTexture.Play();
     }
  }

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Elliot-Hayward · Aug 17, 2015 at 11:19 PM 0

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Unless the API has changed since this question was asked, I believe the issue was actually that new WebCamTexture(cameraIndex, Screen.width, Screen.height); resolves to the constructor WebCamTexture(int requestedWidth, int requestedHeight, int requestedFPS). So, the cameraIndex value was actually being passed to requestedWidth, and so on. If a device name was passed as the first parameter, the rest of the code posted in the original question would have worked fine.

elenzil · Oct 03, 2016 at 07:09 PM 0

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this seems like the right idea, but the code is a little off, because cameraIndex is never used. also there's no fallback case. here's what i'm using, tested on iPhone 6 / iOS 10.

     webCamTexture = null;
     WebCamDevice[] wdcs = WebCamTexture.devices;
     for (int n = 0; n < wdcs.Length; ++n) {
       if (wdcs[n].isFrontFacing) {
         webCamTexture = new WebCamTexture(wdcs[n].name);
       }
     }
 
     if (webCamTexture == null) {
       webCamTexture = new WebCamTexture();
     }

i set the width & height later using webCamTexture.requestedWidth and so on, ins$$anonymous$$d of passing them in the constructor.

Cant access Front (Device) Camera

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