Capturing image from secondary camera problem

[michaelnewyork]

Hi,

I have developed an image and video capturing application for my N95, by using the Camera Application Engine API example given at :

http://wiki.forum.nokia.com/index.ph...ion_Engine_API

I have given camera index as :

void CCamEngine::ConstructL(TInt aCameraIndex)
{
    iCaeEngine=CCaeEngine::NewL(aCameraIndex);
    iCaeEngine->SetCamAppEngineObserver(*this);
    iCaeEngine->InitL();
}

The camera index is 0 for primary (back) camera and 1 for the secondary (front) camera.

It works for :

1. Video Capturing from primary camera
2. Video Capturing from secondary camera
3. Image Capturing from primary camera

But it does not work for :

4. Image Capturing from secondary camera

I have changed nothing else. My N95 default camera application can capture image from secondary camera. But my application stucks when I call :

iCaeEngine=CCaeEngine::NewL(1);

I don't know what else do I need to do.

Any idea please?

Thanks.

Regards.

[symbianyucca]

Maybe you could try using the CCamera API instead.

[michaelnewyork]

Thanks yucca for your reply.

I have used CCamera as you suggested. When I try to capture image from secondary camera, it says "Feature not supported".

What can I do for this? Anything I miss? I have all 13 capabilities that I can have.

Do you have any suggestions?

Thank you.

Regards.

[symbianyucca]

Beats me, it has worked fine for me, though I'm not sure have I tried it ever with 3rd edition really. Anyway, quick search on this forum didn't bring up any known problems either..

[michaelnewyork]

Hi,

My problem is clearer now. I know why I get "Feature not supported" error from secondary camera.

I got this error when I call function :

iCamera->PrepareImageCapture(CCamera::EFormatExif, 1) ;

I have also tried

CCamera::EFormatJpeg
CCamera::EFormatFbsBitmapColor16M
CCamera::EFormatFbsBitmapColor64K
CCamera::EFormatFbsBitmapColor4K
CCamera::EFormatYUV420Planar

But these also didn't supported by secondary camera.

How can I find the formats supported by secondary camera?

Or anyone already knows this please?

Thanks.

[symbianyucca]

Ok, then, you could do a bit of searching on the problem. There has been quite few posts on the topic, and the problem has often been related to size parameters.

[wizard_hu_]

How about checking what TCameraInfo says?

[michaelnewyork]

Hi,

About TCameraInfo and size issue, I have written the code below to get the sizes that secondary camera supports and use the smallest size, but it again gives the same "Feature not supported" error.

Since I can get "jpeg" images by the phone's default camera application from the secondary camera, I think I can use the format "EFormatExif" for the secondary camera also.

CCamera::TFormat format = CCamera::EFormatExif ;

TCameraInfo aInfo;
iCamera->CameraInfo(aInfo); 
TInt sizeCount = aInfo.iNumImageSizesSupported;
TSize size[6];
TInt imageSizeIndex = 1 ;

// all non-zero sizes returned are supported for the format specified
for (TInt i=0; i < sizeCount; i++) 
{
    iCamera->EnumerateCaptureSizes(size[i], i, format); 
}

imageSizeIndex = sizeCount - 1 ;
TRAPD(err, iCamera->PrepareImageCaptureL(format, imageSizeIndex ));

The size of the image got from the default application is 320x240.

I have found following for the primary camera,

Format / Resolution (index) 2592x1944 (0), 2048x1536 (1), 1600x1200 (2), 1024x768 (3), 640x480 (4)

EFormatExif (JPEG) 0, 1, 2, 3, 4
EFormatFbsBitmapColor4K - - - 3, 4
EFormatFbsBitmapColor64K - - - 3, 4
EFormatFbsBitmapColor16M - - - 3, 4

But I don't know about the secondary camera. Any idea?

Thanks.

Regards.