Zoom steps

[MartinHN]

Hi,
Are the discrete zoom levels steps required by omx ?(

ofxOMXCamera/src/OMXCameraController.cpp

Line 3 in 7871b9c

int zoomStepsSource[61] =

)
if not could we think of a continuous mapping? I could PR this if so

Thanks

Martin

[jvcleave]

they are known values in Q16 that the camera takes. I tried mapping it before and it didn't work as well.

There is setZoomLevelNormalized that does pseudo-mapping

[MartinHN]

thanks,

I've added a continuous mapping and its working for me (no critical slowdown for what I can see...)

here is the function I added

OMX_ERRORTYPE OMXCameraController::setDigitalZoomFromFloat(float f)
{
    if(!camera) return OMX_ErrorNone;

   if(f<=0 || f>1.0){
    ofLogError(__func__) << "BAD float zoomLevel: " << f;
    return OMX_ErrorNone;
    }
 int value = (int)ofMap(f,0.0f,1.0f,65536.0f,524288.0f);
    if(digitalZoomConfig.xWidth != value && digitalZoomConfig.xHeight != value)
    {
        digitalZoomConfig.xWidth  = value;
        digitalZoomConfig.xHeight = value;
        
        OMX_ERRORTYPE error = OMX_SetConfig(camera, OMX_IndexConfigCommonDigitalZoom, &digitalZoomConfig);
        OMX_TRACE(error);
       
        return error;
    } 

but to be fully implemented it should be configured with the settings

feel free to close this issue if you don't want to go further on this

and again .. thanks!