Class TAcceleratedBitmapInfo

class TAcceleratedBitmapInfo;

Description

A data structure that holds the information needed to directly access a bitmap.

The bitmap can be a hardware bitmap (RHardwareBitmap), or an ordinary bitmap (CFbsBitmap). An object of this class is filled by calling TAcceleratedBitmapSpec::GetInfo(TAcceleratedBitmapInfo &)const.

Members

Defined in TAcceleratedBitmapInfo:

• iAddressThe address of the start of the bitmap.
• iDisplayModeThe bitmap's display mode.
• iLinePitchThe address offset (in bytes) between successive lines in a bitmap.
• iPhysicalAddressThe physical address of the start of the bitmap. This is the address which a har...
• iPixelShiftThe shift required to obtain the number of bits needed to represent one pixel in...
• iSizeThe width and height of the bitmap in pixels.

See also:

• RHardwareBitmapThe interface to a hardware bitmap.
• CFbsBitmapNote that this class is not intended for user derivation. A bitmap managed by th...
• TAcceleratedBitmapSpec::GetInfo(TAcceleratedBitmapInfo &)const

TDisplayMode iDisplayMode;

Description

The bitmap's display mode.

TUint8 * iAddress;

Description

The address of the start of the bitmap.

TSize iSize;

Description

The width and height of the bitmap in pixels.

TInt iLinePitch;

Description

The address offset (in bytes) between successive lines in a bitmap.

TInt iPixelShift;

Description

The shift required to obtain the number of bits needed to represent one pixel in the bitmap. The number of bits per pixel is calculated as 1 << iPixelShift

TUint8 * iPhysicalAddress;

Description

The physical address of the start of the bitmap. This is the address which a hardware graphics accelerator will use and is zero if the bitmap is not accessible to hardware graphics accelerators.