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MultiCam Boards Documentation > GRABLINK series Documentation > GRABLINK Quickpack CFA Handbook > Pre-Processing Operation > Buffers and Surfaces
Buffers and Surfaces

The surface start address is specified by surface class integer collection parameter SurfaceAddr. The start address must be 32-bit aligned.

The integer collection channel parameter MinBufferPitch reports for each plane of a surface the smallest buffer pitch required to store the image. It is mandatory that the image size is already defined. This is a number multiple of 4.

See Image scaling and grabbing window control for the image size definition.

The effective pitch of each plane buffer of a surface is specified by means of two integer collection parameters: the channel class parameter BufferPitch and the surface class parameter SurfacePitch. Their values must be identical. The range of values is restricted to integer numbers multiple of 4 greater or equal to the respective values of MinBufferPitch.

Note. A gap is required between successive lines for most of the values of ImageSizeX.

The integer collection channel parameter MinBufferPitch reports for each plane of a surface the smallest buffer size required to store the image. It is mandatory that the image size and the buffer pitch are already defined. This is a number multiple of 4.

The effective size of each plane buffer of a surface is specified by means of two integer collection parameters: the channel class parameter BufferSize and the surface class parameter SurfaceSize. Their values must be identical. The range of values is restricted to integer numbers multiple of 4 greater or equal to the respective values of MinBufferPitch.

Note. All plane buffers are 32-bit word aligned.

The topmost leftmost pixel of the image is stored at the lowest address of the plane buffer. This remains valid when image flipping is applied.