VXLIB_colorConvert_YUVXtoNV12_i8u_o8u

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Detailed Description

Functions
VXLIB_STATUS	VXLIB_colorConvert_YUVXtoNV12_i8u_o8u (const uint8_t src[restrict], const VXLIB_bufParams2D_t *src_addr, uint8_t dst0[restrict], const VXLIB_bufParams2D_t *dst0_addr, uint8_t dst1[restrict], const VXLIB_bufParams2D_t *dst1_addr, uint8_t x_value)
VXLIB_STATUS	VXLIB_colorConvert_YUVXtoNV12_i8u_o8u_checkParams (const uint8_t src[], const VXLIB_bufParams2D_t *src_addr, const uint8_t dst0[], const VXLIB_bufParams2D_t *dst0_addr, const uint8_t dst1[], const VXLIB_bufParams2D_t *dst1_addr, uint8_t x_value)

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Function Documentation

VXLIB_STATUS VXLIB_colorConvert_YUVXtoNV12_i8u_o8u	(	const uint8_t	src[restrict],
		const VXLIB_bufParams2D_t *	src_addr,
		uint8_t	dst0[restrict],
		const VXLIB_bufParams2D_t *	dst0_addr,
		uint8_t	dst1[restrict],
		const VXLIB_bufParams2D_t *	dst1_addr,
		uint8_t	x_value
	)

Description:

Performs a color conversion operation from YUYV or UYVY to NV12.

Method:

**

Parameters:

[in]	src[]	Pointer to array containing input YUVX image (UQ8.0)
[in]	src_addr[]	Pointer to structure containing dimensional information of src
[out]	dst0[]	Pointer to array containing output luma plane (UQ8.0)
[in]	dst0_addr[]	Pointer to structure containing dimensional information of dst0
[out]	dst1[]	Pointer to array containing output interleaved UV plane (UQ8.0)
[in]	dst1_addr[]	Pointer to structure containing dimensional information of dst1
[in]	x_value	Parameter indicating whether to convert from YUYV (x_value = 0) or UYVY (x_value = 1)

Assumptions:

• I/O buffer pointers are assumed to be not aliased.
• YUVX Input (1 plane): src_addr
  • 'dim_x' refers to the number of luma pixel units per line
  • 'dim_y' refers to the number of lines in the image
  • 'stride_y' should be at least ('dim_x' * 2 * 1) bytes
• NV12 (2 planes)
  • dst0_addr
    • 'dim_x' refers to the number of luma pixel units per line
    • 'dim_y' refers to the number of lines in the luma plane
    • 'stride_y' refers to the stride of the luma plane, and should be at least ('dim_x' * 1) bytes
  • dst1_addr
    • 'dim_x' refers to the number of bytes per line (should be equal to dst0_addr.dim_x)
    • 'dim_y' refers to the number of lines in the interleaved chroma plane (should be equal to dst0_addr.dim_y / 2)
    • 'stride_y' refers to the stride of the interleaved chroma plane, and should be at least ('dim_x' * 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_STATUS VXLIB_colorConvert_YUVXtoNV12_i8u_o8u_checkParams	(	const uint8_t	src[],
		const VXLIB_bufParams2D_t *	src_addr,
		const uint8_t	dst0[],
		const VXLIB_bufParams2D_t *	dst0_addr,
		const uint8_t	dst1[],
		const VXLIB_bufParams2D_t *	dst1_addr,
		uint8_t	x_value
	)

Description:

Checks the parameters for programming errors for the VXLIB_colorConvert_YUVXtoNV12_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 * 2
• The stride_y of the dst image shall be equal to or greater than dim_x

Parameters:

[in]	src[]	Pointer to array containing input YUVX image (UQ8.0)
[in]	src_addr[]	Pointer to structure containing dimensional information of src
[out]	dst0[]	Pointer to array containing output luma plane (UQ8.0)
[in]	dst0_addr[]	Pointer to structure containing dimensional information of dst0
[out]	dst1[]	Pointer to array containing output interleaved UV plane (UQ8.0)
[in]	dst1_addr[]	Pointer to structure containing dimensional information of dst1
[in]	x_value	Parameter indicating whether to convert from YUYV (x_value = 0) or UYVY (x_value = 1)

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