TCameraInfo Class Reference

class TCameraInfo

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.

Member Enumerations Documentation

Enum TCameraOrientation

Possible directions in which the camera may point.

Enumerators

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.

Enum TOptions

Various flags describing the features available for a particular implementation

Enumerators

EViewFinderDirectSupported = 0x0001

View finder display direct-to-screen flag

EViewFinderBitmapsSupported = 0x0002

View finder bitmap generation flag

EImageCaptureSupported = 0x0004

Still image capture flag

EVideoCaptureSupported = 0x0008

Video capture flag

EViewFinderMirrorSupported = 0x0010

View finder display mirroring flag

EContrastSupported = 0x0020

Contrast setting flag

EBrightnessSupported = 0x0040

Brightness setting flag

EViewFinderClippingSupported = 0x0080

View finder clipping flag

EImageClippingSupported = 0x0100

Still image capture clipping flag

EVideoClippingSupported = 0x0200

Video capture clipping flag

Member Data Documentation

TUint32 iExposureModesSupported

TUint32 iExposureModesSupported

The supported exposure modes.

This is a bitfield of CCamera::TExposure values.

TUint32 iFlashModesSupported

TUint32 iFlashModesSupported

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. CCamera::CCameraAdvancedSettings::SupportedFlashModes()

TVersion iHardwareVersion

TVersion iHardwareVersion

Version number and name of camera hardware.

TUint32 iImageFormatsSupported

TUint32 iImageFormatsSupported

The supported still image formats.

This is a bitfield of CCamera::TFormat values.

TInt iMaxBuffersSupported

TInt iMaxBuffersSupported

Maximum number of buffers allowed

TInt iMaxDigitalZoom

TInt iMaxDigitalZoom

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 iMaxDigitalZoomFactor

TReal32 iMaxDigitalZoomFactor

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 iMaxFramesPerBufferSupported

TInt iMaxFramesPerBufferSupported

Maximum number of frames per buffer that may be requested.

TInt iMaxZoom

TInt iMaxZoom

Maximum zoom value allowed.

Must be positive, or zero if not supported.

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

TReal32 iMaxZoomFactor

TReal32 iMaxZoomFactor

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.

TInt iMinZoom

TInt iMinZoom

Minimum zoom value allowed.

Must be negative, or zero if not supported.

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

TReal32 iMinZoomFactor

TReal32 iMinZoomFactor

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.

TInt iNumImageSizesSupported

TInt iNumImageSizesSupported

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.

TInt iNumVideoFrameRatesSupported

TInt iNumVideoFrameRatesSupported

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.

TInt iNumVideoFrameSizesSupported

TInt iNumVideoFrameSizesSupported

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.

TUint32 iOptionsSupported

TUint32 iOptionsSupported

Bitfield of TOptions available

TCameraOrientation iOrientation

TCameraOrientation iOrientation

Orientation of this particular camera device.

TVersion iSoftwareVersion

TVersion iSoftwareVersion

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

TUint32 iVideoFrameFormatsSupported

TUint32 iVideoFrameFormatsSupported

The supported video frame formats.

This is a bitfield of video frame CCamera::TFormat 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 the ECAM implementation. To receive unrecognised/extra added enum values, the application should rather use CCamera::New2L() or CCamera::NewDuplicate2L() to create the camera object. This is an indication to the ECAM implementation. In this case, the application is assumed to be prepared to receive unrecognised enum values.

TUint32 iWhiteBalanceModesSupported

TUint32 iWhiteBalanceModesSupported

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

CCamera::CCameraAdvancedSettings::SupportedWhiteBalanceModes()