Intel® Integrated Performance Primitives Developer Reference

Developer Reference

  • 2020
  • 07/15/2020
  • Public Content
Contents

Copy

Copies pixel values between two buffers.

Syntax

Case 1: Copying all pixels of all color channels
IppStatus ippiCopy_<mod>
(
const
Ipp<datatype>*
pSrc
,
int
srcStep
,
Ipp<datatype>*
pDst
,
int
dstStep
,
IppiSize
roiSize
);
Supported values for
mod
 :
8u_C1R
16u_C1R
16s_C1R
32s_C1R
32f_C1R
8u_C3R
16u_C3R
16s_C3R
32s_C3R
32f_C3R
8u_C4R
16u_C4R
16s_C4R
32s_C4R
32f_C4R
8u_AC4R
16u_AC4R
16s_AC4R
32s_AC4R
32f_AC4R
8u_C3AC4R
16u_C3AC4R
16s_C3AC4R
32s_C3AC4R
32f_C3AC4R
8u_AC4C3R
16u_AC4C3R
16s_AC4C3R
32s_AC4C3R
32f_AC4C3R
Case 2: Copying masked pixels only
IppStatus ippiCopy_<mod>
(
const
Ipp<datatype>*
pSrc
,
int
srcStep
,
Ipp<datatype>*
pDst
,
int
dstStep
,
IppiSize
roiSize
,
const
Ipp8u*
pMask
,
int
maskStep
);
Supported values for
mod
 :
8u_C1MR
16u_C1MR
16s_C1MR
32s_C1MR
32f_C1MR
8u_C3MR
16u_C3MR
16s_C3MR
32s_C3MR
32f_C3MR
8u_C4MR
16u_C4MR
16s_C4MR
32s_C4MR
32f_C4MR
8u_AC4MR
16u_AC4MR
16s_AC4MR
32s_AC4MR
32f_AC4MR
Case 3: Copying a selected channel in a multi-channel image
IppStatus ippiCopy_<mod>
(
const Ipp<datatype>*
pSrc
,
int
srcStep
,
Ipp<datatype>*
pDst
,
int
dstStep
,
IppiSize
roiSize
);
Supported values for
mod
 :
8u_C3CR
16u_C3CR
16s_C3CR
32s_C3CR
32f_C3CR
8u_C4CR
16u_C4CR
16s_C4CR
32s_C4CR
32f_C4CR
Case 4: Copying a selected channel to a one-channel image
IppStatus ippiCopy_<mod>
(
const Ipp<datatype>*
pSrc
,
int
srcStep
,
Ipp<datatype>*
pDst
,
int
dstStep
,
IppiSize
roiSize
);
Supported values for
mod
 :
8u_C3C1R
16u_C3C1R
16s_C3C1R
32s_C3C1R
32f_C3C1R
8u_C4C1R
16u_C4C1R
16s_C4C1R
32s_C4C1R
32f_C4C1R
Case 5: Copying a one-channel image to a multi-channel image
IppStatus ippiCopy_<mod>
(
const Ipp<datatype>*
pSrc
,
int
srcStep
,
Ipp<datatype>*
pDst
,
int
dstStep
,
IppiSize
roiSize
);
Supported values for
mod
 :
8u_C1C3R
16u_C1C3R
16s_C1C3R
32s_C1C3R
32f_C1C3R
8u_C1C4R
16u_C1C4R
16s_C1C4R
32s_C1C4R
32f_C1C4R
Case 6: Splitting color image into separate planes
IppStatus ippiCopy_<mod>
(
const Ipp<datatype>*
pSrc
,
int
srcStep
,
Ipp<datatype>*
const
pDst
[3]
,
int
dstStep
,
IppiSize
roiSize
);
Supported values for
mod
 :
8u_C3P3R
16u_C3P3R
16s_C3P3R
32s_C3P3R
32f_C3P3R
IppStatus ippiCopy_<mod>
(
const Ipp<datatype>*
pSrc
,
int
srcStep
,
Ipp<datatype>*
const
pDst
[4]
,
int
dstStep
,
IppiSize
roiSize
);
Supported values for
mod
 :
8u_C4P4R
16u_C4P4R
16s_C4P4R
32s_C4P4R
32f_C4P4R
Case 7: Composing color image from separate planes
IppStatus ippiCopy_<mod>
(
const Ipp<datatype>*
const
pSrc
[3]
,
int
srcStep
,
Ipp<datatype>*
pDst
,
int
dstStep
,
IppiSize
roiSize
);
Supported values for
mod
 :
8u_P3C3R
16u_P3C3R
16s_P3C3R
32s_P3C3R
32f_P3C3R
IppStatus ippiCopy_<mod>
(
const Ipp<datatype>*
const
pSrc
[4]
,
int
srcStep
,
Ipp<datatype>*
pDst
,
int
dstStep
,
IppiSize
roiSize
);
Supported values for
mod
 :
8u_P4C4R
16u_P4C4R
16s_P4C4R
32s_P4C4R
32f_P4C4R
Case 8: Copying all pixels of all color channels with platform-aware functions
IppStatus ippiCopy_<mod>
(
const Ipp<datatype>*
pSrc
,
IppSizeL
srcStep
,
Ipp<datatype>*
pDst
,
IppSizeL
dstStep
,
IppiSizeL
roiSize
);
Supported values for
mod
 :
8u_C1R_L
16s_C1R_L
16u_C1R_L
32s_C1R_L
32f_C1R_L
8u_C3R_L
16s_C3R_L
16u_C3R_L
32s_C3R_L
32f_C3R_L
8u_C4R_L
16s_C4R_L
16u_C4R_L
32s_C4R_L
32f_C4R_L
8u_AC4R_L
16s_AC4R_L
16u_AC4R_L
32s_AC4R_L
32f_AC4R_L
Include Files
ippi.h
Flavors with the
_L
 suffix:
ippi_l.h
Domain Dependencies
Headers:
ippcore.h
 ,
ippvm.h
 ,
ipps.h
Libraries:
ippcore.lib
 ,
ippvm.lib
 ,
ipps.lib
Parameters
pSrc
Pointer to the source image ROI. The array storing pointers to the color planes of the source planar image.
srcStep
Distance, in bytes, between the starting points of consecutive lines in the source image.
pDst
Pointer to the destination image ROI. The array storing pointers to the color planes of the destination planar image.
dstStep
Distance, in bytes, between the starting points of consecutive lines in the destination image.
roiSize
Size of the source and destination ROI in pixels.
pMask
Pointer to the mask image buffer.
maskStep
Distance, in bytes, between the starting points of consecutive lines in the mask image buffer.
Description
This function operates with ROI.
This function copies data from the source image
pSrc
 to the destination image
pDst
 . Copying pixels selected by a mask
pMask
 is supported as well.
For masked operation (
Case 2
 ), the function writes pixel values in the destination buffer only if the spatially corresponding mask array value is non-zero (as illustrated in the code example below).
Function flavors operating with the channel of interest (descriptor
C
 ) copy only one specified channel of a source multi-channel image to the channel of another multi-channel image (see
Case 3
 ). For these functions, the
pSrc
 and
pDst
 pointers point to the starts of ROI buffers in the specified channels of source and destination images, respectively.
Some function flavors add alpha channel to the 3-channel source image (flavors with the
_C3AC4R
 descriptor), or discard alpha channel from the source image (flavors with the
_AC4C3R
 descriptor) - see
Case 1
 .
Special function flavors copy data from only one specified channel
pSrc
 of a multi-channel image to a one-channel image
pDst
 (see
Case 4
 ), as well as to copy data from a one-channel image
pSrc
 to only one specified channel of a multi-channel image
pDst
 (see
Case 5
 ).
You can also use the
ippiCopy
 function to convert the interleaved color image into separate planes and vice versa (see
Case 6
 and
Case 7
 ).
Return Values
ippStsNoErr
Indicates no error. Any other value indicates an error or a warning.
ippStsNullPtrErr
Indicates an error when any of the specified pointers is
NULL
 , with the exception of second mode in
Case 4
 .
ippStsSizeErr
Indicates an error condition if
roiSize
 has a field with a zero or negative value.
ippStsStepErr
Indicates an error condition if
srcStep
 or
dstStep
 is less than
roiSize.width
 *
<pixelSize>
 for
Cases 4
 and
5
 .

Example

The code example below shows how to copy masked data.







      IppStatus copyWithMask( void ) {
      Ipp8u mask[3*3], x[5*4], y[5*4]={0};
      IppiSize imgroi={5,4}, mskroi={3,3};
      ippiSet_8u_C1R( 3, x, 5, imgroi );
      /// set mask with a hole in upper left corner
      ippiSet_8u_C1R( 1, mask, 3, mskroi );
      mask[0] = 0;
      /// copy roi with mask
      return ippiCopy_8u_C1MR( x, 5, y, 5, mskroi, mask, 3 );
   }
The destination image
y
 contains:







   00 03 03 00 00
   03 03 03 00 00
   03 03 03 00 00
   00 00 00 00 00

Product and Performance Information

1

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Notice revision #20110804