VXLIB_colorConvert_RGBXtoRGB_i8u_o8u

Functions
VXLIB_STATUS	VXLIB_colorConvert_RGBXtoRGB_i8u_o8u (const uint8_t src[restrict], const VXLIB_bufParams2D_t *src_addr, uint8_t dst[restrict], const VXLIB_bufParams2D_t *dst_addr)
VXLIB_STATUS	VXLIB_colorConvert_RGBXtoRGB_i8u_o8u_checkParams (const uint8_t src[restrict], const VXLIB_bufParams2D_t *src_addr, const uint8_t dst[restrict], const VXLIB_bufParams2D_t *dst_addr)

Detailed Description

Function Documentation

VXLIB_colorConvert_RGBXtoRGB_i8u_o8u()

VXLIB_STATUS VXLIB_colorConvert_RGBXtoRGB_i8u_o8u	(	const uint8_t	src[restrict],
		const VXLIB_bufParams2D_t *	src_addr,
		uint8_t	dst[restrict],
		const VXLIB_bufParams2D_t *	dst_addr
	)

Description:

Converts RGBX interleaved to RGB interleaved (discard the X channel).

Method:

Copy the first three channels of a set of four and discard the fourth.

Parameters

[in]	src[]	Pointer to array containing input RGBX image (UQ8.0)
[in]	src_addr[]	Pointer to structure containing dimensional information of src
[out]	dst[]	Pointer to array containing output RGB image (UQ8.0)
[in]	dst_addr[]	Pointer to structure containing dimensional information of dst

Assumptions:

• I/O buffer pointers are assumed to be not aliased.
• RGBX Input (1 plane): src_addr
  • 'dim_x' refers to the number of RGBX pixel units per line
  • 'dim_y' refers to the number of lines in the image
  • 'stride_y' should be at least ('dim_x' * 4 * 1) bytes
• RGB (1 plane): dst_addr
  • 'dim_x' refers to the number of RGB pixel units per line
  • 'dim_y' refers to the number of lines in the image
  • 'stride_y' should be at least ('dim_x' * 3 * 1) bytes

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 and width values to a multiple of 8

VXLIB_colorConvert_RGBXtoRGB_i8u_o8u_checkParams()

VXLIB_STATUS VXLIB_colorConvert_RGBXtoRGB_i8u_o8u_checkParams	(	const uint8_t	src[restrict],
		const VXLIB_bufParams2D_t *	src_addr,
		const uint8_t	dst[restrict],
		const VXLIB_bufParams2D_t *	dst_addr
	)

Description:

Checks the parameters for programming errors for the VXLIB_colorConvert_RGBXtoRGB_i8u_o8u function.

Method:

The following checks are made:

• There shall be no NULL pointers
• Both images shall have the same x and y dimensions
• The stride_y of the src image shall be equal to or greater than dim_x * 4
• The stride_y of the dst image shall be equal to or greater than dim_x * 3

Parameters

[in]	src[]	Pointer to array containing input RGBX image (UQ8.0)
[in]	src_addr[]	Pointer to structure containing dimensional information of src
[out]	dst[]	Pointer to array containing output RGB image (UQ8.0)
[in]	dst_addr[]	Pointer to structure containing dimensional information of dst