Sse_optimizations

Detailed Description

SSE optimized functions.

Functions
template<bool MemIsAligned>
void	impl_image_SSE2_scale_half_1c8u (const uint8_t *in, uint8_t *out, int w, int h, size_t step_in, size_t step_out)
template<bool MemIsAligned>
void	impl_image_SSE2_scale_half_smooth_1c8u (const uint8_t *in, uint8_t *out, int w, int h, size_t step_in, size_t step_out)
void	image_SSE2_scale_half_1c8u (const uint8_t *in, uint8_t *out, int w, int h, size_t step_in, size_t step_out)
	Subsample each 2x2 pixel block into 1x1 pixel, taking the first pixel & ignoring the other 3. More...
void	image_SSE2_scale_half_smooth_1c8u (const uint8_t *in, uint8_t *out, int w, int h, size_t step_in, size_t step_out)
	Average each 2x2 pixels into 1x1 pixel (arithmetic average) More...
template<bool MemIsAligned>
void	impl_image_SSSE3_scale_half_3c8u (const uint8_t *in, uint8_t *out, int w, int h, size_t step_in, size_t step_out)
void	image_SSSE3_scale_half_3c8u (const uint8_t *in, uint8_t *out, int w, int h, size_t step_in, size_t step_out)
	Subsample each 2x2 pixel block into 1x1 pixel, taking the first pixel & ignoring the other 3. More...
template<bool IS_RGB, bool MemIsAligned>
void	impl_image_SSSE3_rgb_or_bgr_to_gray_8u (const uint8_t *in, uint8_t *out, int w, int h, size_t step_in, size_t step_out)
void	image_SSSE3_bgr_to_gray_8u (const uint8_t *in, uint8_t *out, int w, int h, size_t step_in, size_t step_out)
	Convert a RGB image (3cu8) into a GRAYSCALE (1c8u) image, using Y=77*R+150*G+29*B. More...
void	image_SSSE3_rgb_to_gray_8u (const uint8_t *in, uint8_t *out, int w, int h, size_t step_in, size_t step_out)
	Convert a RGB image (3cu8) into a GRAYSCALE (1c8u) image, using Y=77*R+150*G+29*B. More...

Function Documentation

image_SSE2_scale_half_1c8u()

void image_SSE2_scale_half_1c8u	(	const uint8_t *	in,
		uint8_t *	out,
		int	w,
		int	h,
		size_t	step_in,
		size_t	step_out
	)

Subsample each 2x2 pixel block into 1x1 pixel, taking the first pixel & ignoring the other 3.

• Input format: uint8_t, 1 channel
• Output format: uint8_t, 1 channel
• Preconditions: in & out aligned to 16bytes (faster) or not, step = k*16 (faster) or not
• Notes:
• Requires: SSE2
• Invoked from: mrpt::img::CImage::scaleHalf()

Definition at line 145 of file CImage_SSE2.cpp.

Referenced by mrpt::img::CImage::scaleHalf().

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image_SSE2_scale_half_smooth_1c8u()

void image_SSE2_scale_half_smooth_1c8u	(	const uint8_t *	in,
		uint8_t *	out,
		int	w,
		int	h,
		size_t	step_in,
		size_t	step_out
	)

Average each 2x2 pixels into 1x1 pixel (arithmetic average)

• Input format: uint8_t, 1 channel
• Output format: uint8_t, 1 channel
• Preconditions: in & out aligned to 16bytes (faster) or not, step = k*16 (faster) or not
• Notes:
• Requires: SSE2
• Invoked from: mrpt::img::CImage::scaleHalfSmooth()

Definition at line 170 of file CImage_SSE2.cpp.

Referenced by mrpt::img::CImage::scaleHalf().

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image_SSSE3_bgr_to_gray_8u()

void image_SSSE3_bgr_to_gray_8u	(	const uint8_t *	in,
		uint8_t *	out,
		int	w,
		int	h,
		size_t	step_in,
		size_t	step_out
	)

Convert a RGB image (3cu8) into a GRAYSCALE (1c8u) image, using Y=77*R+150*G+29*B.

• Input format: uint8_t, 3 channels (BGR order)
• Output format: uint8_t, 1 channel
• Preconditions: in & out aligned to 16bytes (faster) or not, step = k*16
• Notes:
• Requires: SSSE3
• Invoked from: mrpt::img::CImage::grayscale(), mrpt::img::CImage::grayscaleInPlace()

Definition at line 271 of file CImage_SSE3.cpp.

References ASSERTMSG_.

Referenced by my_img_to_grayscale().

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image_SSSE3_rgb_to_gray_8u()

void image_SSSE3_rgb_to_gray_8u	(	const uint8_t *	in,
		uint8_t *	out,
		int	w,
		int	h,
		size_t	step_in,
		size_t	step_out
	)

Convert a RGB image (3cu8) into a GRAYSCALE (1c8u) image, using Y=77*R+150*G+29*B.

• Input format: uint8_t, 3 channels (RGB order)
• Output format: uint8_t, 1 channel
• Preconditions: in & out aligned to 16bytes (faster) or not, step = k*16
• Notes:
• Requires: SSSE3
• Invoked from: mrpt::img::CImage::grayscale(), mrpt::img::CImage::grayscaleInPlace()

Definition at line 301 of file CImage_SSE3.cpp.

References ASSERTMSG_.

image_SSSE3_scale_half_3c8u()

void image_SSSE3_scale_half_3c8u	(	const uint8_t *	in,
		uint8_t *	out,
		int	w,
		int	h,
		size_t	step_in,
		size_t	step_out
	)

Subsample each 2x2 pixel block into 1x1 pixel, taking the first pixel & ignoring the other 3.

• Input format: uint8_t, 3 channels (RGB or BGR)
• Output format: uint8_t, 3 channels (RGB or BGR)
• Preconditions: in & out may be aligned to 16bytes (faster) or not, step may be k*16 (faster) or not.
• Notes:
• Requires: SSSE3
• Invoked from: mrpt::img::CImage::scaleHalf()

Definition at line 115 of file CImage_SSE3.cpp.

Referenced by mrpt::img::CImage::scaleHalf().

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impl_image_SSE2_scale_half_1c8u()

template<bool MemIsAligned>

void impl_image_SSE2_scale_half_1c8u	(	const uint8_t *	in,
		uint8_t *	out,
		int	w,
		int	h,
		size_t	step_in,
		size_t	step_out
	)

Definition at line 37 of file CImage_SSE2.cpp.

impl_image_SSE2_scale_half_smooth_1c8u()

template<bool MemIsAligned>

void impl_image_SSE2_scale_half_smooth_1c8u	(	const uint8_t *	in,
		uint8_t *	out,
		int	w,
		int	h,
		size_t	step_in,
		size_t	step_out
	)

Definition at line 82 of file CImage_SSE2.cpp.

impl_image_SSSE3_rgb_or_bgr_to_gray_8u()

template<bool IS_RGB, bool MemIsAligned>

void impl_image_SSSE3_rgb_or_bgr_to_gray_8u	(	const uint8_t *	in,
		uint8_t *	out,
		int	w,
		int	h,
		size_t	step_in,
		size_t	step_out
	)

Definition at line 135 of file CImage_SSE3.cpp.

impl_image_SSSE3_scale_half_3c8u()

template<bool MemIsAligned>

void impl_image_SSSE3_scale_half_3c8u	(	const uint8_t *	in,
		uint8_t *	out,
		int	w,
		int	h,
		size_t	step_in,
		size_t	step_out
	)

Definition at line 35 of file CImage_SSE3.cpp.