Descriptor
The optional
descriptor
element describes the data associated with the operation. Descriptors are individual characters that indicate additional details of the operation.
The Intel IPP functions use the following descriptors:
Descriptor
| Description
| Example
|
|---|---|---|
A | Image data contains an alpha channel as the last channel, requires
C4 , alpha-channel is not processed.
| ippiFilterMax_8u_AC4R |
A xx | Advanced arithmetic operations with
xx bits of accuracy.
| ippsPowx_32f_A11 |
C | The function operates on a specified channel of interest (COI) for each source image.
| ippiSet_8u_C3CR
|
C n | Image data consists of
n channels. Possible values for
n : 1, 2, 3, 4.
| ippiFilterBorder_32f_C1R
|
D x D
| Signal is x-dimensional (default is
D1 ).
| ippsConcat_8u_D2 |
I | Operation is in-place (default is not-in-place).
| ippsAdd_16s_I |
L | Platform-aware functions (see
Using Intel IPP Platform-Aware Functions for details).
| ippiAdd_8u_C1RSfs_L |
TL | Threading layer functions (see
Using Intel IPP Threading Layer Functions for details).
| ippiAdd_8u_C1RSfs_LT |
M | Operation uses a mask to determine pixels to be processed.
| ippiCopy_8u_C1MR
|
P n | Image data consists of
n discrete planar (not-interleaved) channels with a separate pointer to each plane. Possible values for
n : 1, 2, 3, 4.
| ippiAlphaPremul_8u_AP4R |
R | Function operates on a defined region of interest (ROI) for each source image.
| ippiMean_8u_C4R
|
s | Saturation and no scaling (default).
| ippiConvert_16s16u_C1Rs
|
Sfs | Saturation and fixed scaling mode (default is saturation and no scaling).
| ippsConvert_16s8s_Sfs |
The descriptors in function names are presented in the function name in alphabetical order.
Some data descriptors are default for certain operations and not added to the function names. For example, the image processing functions always operate on a two-dimensional image and saturate the results without scaling them. In these cases, the implied descriptors
D2
(two-dimensional signal) and
s
(saturation and no scaling) are not included in the function name.