VXLIB_accumulateImage_i8u_io16s

Detailed Description


Functions

VXLIB_STATUS VXLIB_accumulateImage_i8u_io16s (const uint8_t src[restrict], const VXLIB_bufParams2D_t *src_addr, int16_t dst[restrict], const VXLIB_bufParams2D_t *dst_addr)
VXLIB_STATUS VXLIB_accumulateImage_i8u_io16s_checkParams (const uint8_t src[], const VXLIB_bufParams2D_t *src_addr, const int16_t dst[], const VXLIB_bufParams2D_t *dst_addr)

Function Documentation

VXLIB_STATUS VXLIB_accumulateImage_i8u_io16s ( const uint8_t  src[restrict],
const VXLIB_bufParams2D_t *  src_addr,
int16_t  dst[restrict],
const VXLIB_bufParams2D_t *  dst_addr 
)

Description:
Accumulates an input image into output image.
Method:
Accumulation is computed by using the following equation:

    dst(x,y) = dst(x,y) + src(x,y)

Parameters:
[in] src[] Pointer to array containing first input image (UQ8.0)
[in] src_addr[] Pointer to structure containing dimensional information of src
[in,out] dst[] Pointer to array containing output image (SQ15.0)
[in] dst_addr[] Pointer to structure containing dimensional information of dst
Assumptions:
  • I/O buffer pointers are assumed to be not aliased.
Performance Considerations:
  • For best performance, the following parameter settings are recommended:
    • Set widths equal to strides
    • Align all pointers to 8 byte boundaries
    • Set all stride values to a multiple of 8
    • Set all width values to a multiple of 8

VXLIB_STATUS VXLIB_accumulateImage_i8u_io16s_checkParams ( const uint8_t  src[],
const VXLIB_bufParams2D_t *  src_addr,
const int16_t  dst[],
const VXLIB_bufParams2D_t *  dst_addr 
)

Description:
Checks the parameters for programming errors for the VXLIB_accumulateImage_i8u_io16s function.
Method:
The following checks are made:
  • There shall be no NULL pointers
  • All images shall have the same x and y dimensions
  • The strides of each image shall be equal to or greater than the x dimension
Parameters:
[in] src[] Pointer to array containing first input image (UQ8.0)
[in] src_addr[] Pointer to structure containing dimensional information of src
[in,out] dst[] Pointer to array containing output image (SQ15.0)
[in] dst_addr[] Pointer to structure containing dimensional information of dst

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