Class TCameraInfo

class TCameraInfo;

Description

Specifies camera device information.

If either zoom or digital zoom are available then the appropriate entries in this class will be set to indicate the range of values that they may take. This should be implemented such that a setting of zero corresponds to no zoom, and a step of one corresponds to the smallest increment available, in a linear fashion.

There are also zoom factors that correspond to the actual zoom factor when at minimum (non-digital only) and maximum zoom. Negative zoom values represent macro functionality.

Image capture, if supported, is simply a case of transferring the current image from the camera to the client via MCameraObserver::ImageReady(). The camera class must set the iImageFormatsSupported bitfield to indicate the formats available.

Members

Defined in TCameraInfo:
EBrightnessSupported, EContrastSupported, EImageCaptureSupported, EImageClippingSupported, EOrientationInwards, EOrientationMobile, EOrientationOutwards, EOrientationUnknown, EVideoCaptureSupported, EVideoClippingSupported, EViewFinderBitmapsSupported, EViewFinderClippingSupported, EViewFinderDirectSupported, EViewFinderMirrorSupported, TCameraOrientation, TOptions, iExposureModesSupported, iFlashModesSupported, iHardwareVersion, iImageFormatsSupported, iMaxBuffersSupported, iMaxDigitalZoom, iMaxDigitalZoomFactor, iMaxFramesPerBufferSupported, iMaxZoom, iMaxZoomFactor, iMinZoom, iMinZoomFactor, iNumImageSizesSupported, iNumVideoFrameRatesSupported, iNumVideoFrameSizesSupported, iOptionsSupported, iOrientation, iSoftwareVersion, iVideoFrameFormatsSupported, iWhiteBalanceModesSupported

TCameraOrientation

Description

Possible directions in which the camera may point.

EOrientationOutwards Outward pointing camera for taking pictures. Camera is directed away from the user. EOrientationInwards Inward pointing camera for conferencing. Camera is directed towards the user. EOrientationMobile Mobile camera capable of multiple orientations. Camera orientation may be changed by the user. EOrientationUnknown Camera orientation is not known.

TOptions

Description

Various flags describing the features available for a particular implementation

EViewFinderDirectSupported View finder display direct-to-screen flag EViewFinderBitmapsSupported View finder bitmap generation flag EImageCaptureSupported Still image capture flag EVideoCaptureSupported Video capture flag EViewFinderMirrorSupported View finder display mirroring flag EContrastSupported Contrast setting flag EBrightnessSupported Brightness setting flag EViewFinderClippingSupported View finder clipping flag EImageClippingSupported Still image capture clipping flag EVideoClippingSupported Video capture clipping flag

TVersion iHardwareVersion;

Description

Version number and name of camera hardware.

TVersion iSoftwareVersion;

Description

Version number and name of camera software (device driver).

TCameraOrientation iOrientation;

Description

Orientation of this particular camera device.

TUint32 iOptionsSupported;

Description

Bitfield of TOptions available

TUint32 iFlashModesSupported;

Description

The supported flash modes.

This is a bitfield of CCamera::TFlash values.

If methods CCamera::New2L() or CCamera::NewDuplicate2L() are not used to create the CCamera object, it is assumed that the application may not be able to cope with any future additions to the enum values. So, any unrecognised enum value passed from the implementation should be filtered by ECAM Implementation. To receive unrecognised/extra added enum values, application should rather use CCamera::New2L() or CCamera::NewDuplicate2L() to create camera object. This is an indication to ECAM implementation. In this case, application is assumed to be prepared to receive unrecognised enum values.

See also:

• CCamera::CCameraAdvancedSettings::SupportedFlashModes()

TUint32 iExposureModesSupported;

Description

The supported exposure modes.

This is a bitfield of CCamera::TExposure values.

TUint32 iWhiteBalanceModesSupported;

Description

The supported white balance settings.

This is a bitfield of of CCamera::TWhiteBalance values.

If methods CCamera::New2L() or CCamera::NewDuplicate2L() are not used to create the CCamera object, it is assumed that the application may not be able to cope with any future additions to the enum values. So, any unrecognised enum value passed from the implementation should be filtered by ECAM Implementation. To receive unrecognised/extra added enum values, application should rather use CCamera::New2L() or CCamera::NewDuplicate2L() to create camera object. This is an indication to ECAM implementation. In this case, application is assumed to be prepared to receive unrecognised enum values. Refer to CCamera::CCameraAdvancedSettings::SupportedWhiteBalanceModes() implementation

See also:

• CCamera::CCameraAdvancedSettings::SupportedWhiteBalanceModes()

TInt iMinZoom;

Description

Minimum zoom value allowed.

Must be negative, or zero if not supported.

This is the minimum value that may be passed to CCamera::SetZoomFactorL().

TInt iMaxZoom;

Description

Maximum zoom value allowed.

Must be positive, or zero if not supported.

This is the maximum value that may be passed to CCamera::SetZoomFactorL().

TInt iMaxDigitalZoom;

Description

Maximum digital zoom value allowed.

Must be positive, or zero if not supported.

This is the maximum value that may be passed to CCamera::SetDigitalZoomFactorL(). Digital zoom factor is assumed to be a linear scale from 0 to iMaxDigitalZoom.

TReal32 iMinZoomFactor;

Description

Image size multiplier corresponding to minimum zoom value.

Must be between 0 and 1 inclusive. Both 0 and 1 indicate that macro functionality is not supported.

TReal32 iMaxZoomFactor;

Description

Image size multiplier corresponding to maximum zoom value.

May take the value 0, or values greater than or equal to 1. Both 0 and 1 indicate that zoom functionality is not supported.

TReal32 iMaxDigitalZoomFactor;

Description

Image size multiplier corresponding to maximum digital zoom value.

Implementation recommendation is to use 'appropriate value' for maximum digital zoom which could cover only values given by new digital zoom methods based on image format and capture mode.

Must be greater than or equal to 1.

TInt iNumImageSizesSupported;

Description

Count of still image capture sizes allowed.

Number of different image sizes that CCamera::EnumerateCaptureSizes() will support, based on the index passed in. Index must be between 0 and iNumImageSizesSupported-1.

TUint32 iImageFormatsSupported;

Description

The supported still image formats.

This is a bitfield of CCamera::TFormat values.

TInt iNumVideoFrameSizesSupported;

Description

Count of video frame sizes allowed.

This is the number of different video frame sizes that CCamera::EnumerateVideoFrameSizes() will support, based on the specified index. The index must be between 0 and iNumVideoFrameSizesSupported-1.

TInt iNumVideoFrameRatesSupported;

Description

Count of video frame rates allowed.

This is the number of different video frame rates that CCamera::EnumerateVideoFrameRates() will support, based on the specified index. The index must be between 0 and iNumVideoFrameRatesSupported-1.

TUint32 iVideoFrameFormatsSupported;

Description

The supported video frame formats.

This is a bitfield of video frame CCamera::TFormat values.

TInt iMaxFramesPerBufferSupported;

Description

Maximum number of frames per buffer that may be requested.

TInt iMaxBuffersSupported;

Description

Maximum number of buffers allowed