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.\" ========================================================================
.\"
.IX Title "pods::SDL::GFX::ImageFilter 3pm"
.TH pods::SDL::GFX::ImageFilter 3pm "2020-11-09" "perl v5.32.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
SDL::GFX::ImageFilter \- image filtering functions
.SH "CATEGORY"
.IX Header "CATEGORY"
\&\s-1TODO, GFX\s0
.SH "METHODS"
.IX Header "METHODS"
.SS "MMX_detect"
.IX Subsection "MMX_detect"
int
\&\fBgfx_image_MMX_detect()\fR
	\s-1CODE:\s0
		\fBSDL_imageFilterMMXdetect()\fR;
.SS "MMX_off"
.IX Subsection "MMX_off"
void
\&\fBgfx_image_MMX_off()\fR
	\s-1CODE:\s0
		\fBSDL_imageFilterMMXoff()\fR;
.SS "MMX_on"
.IX Subsection "MMX_on"
void
\&\fBgfx_image_MMX_on()\fR
	\s-1CODE:\s0
		\fBSDL_imageFilterMMXon()\fR;
.SS "add"
.IX Subsection "add"
int
gfx_image_add(Src1, Src2, Dest, length)
	unsigned char *Src1
	unsigned char *Src2
	unsigned char *Dest
	int length
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterAdd(Src1, Src2, Dest, length);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "mean"
.IX Subsection "mean"
int
gfx_image_mean(Src1, Src2, Dest, length)
	unsigned char *Src1
	unsigned char *Src2
	unsigned char *Dest
	int length
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterMean(Src1, Src2, Dest, length);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "sub"
.IX Subsection "sub"
int
gfx_image_sub(Src1, Src2, Dest, length)
	unsigned char *Src1
	unsigned char *Src2
	unsigned char *Dest
	int length
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterSub(Src1, Src2, Dest, length);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "abs_diff"
.IX Subsection "abs_diff"
int
gfx_image_abs_diff(Src1, Src2, Dest, length)
	unsigned char *Src1
	unsigned char *Src2
	unsigned char *Dest
	int length
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterAbsDiff(Src1, Src2, Dest, length);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "mult"
.IX Subsection "mult"
int
gfx_image_mult(Src1, Src2, Dest, length)
	unsigned char *Src1
	unsigned char *Src2
	unsigned char *Dest
	int length
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterMult(Src1, Src2, Dest, length);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "mult_nor"
.IX Subsection "mult_nor"
int
gfx_image_mult_nor(Src1, Src2, Dest, length)
	unsigned char *Src1
	unsigned char *Src2
	unsigned char *Dest
	int length
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterMultNor(Src1, Src2, Dest, length);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "mult_div_by_2"
.IX Subsection "mult_div_by_2"
int
gfx_image_mult_div_by_2(Src1, Src2, Dest, length)
	unsigned char *Src1
	unsigned char *Src2
	unsigned char *Dest
	int length
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterMultDivby2(Src1, Src2, Dest, length);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "mult_div_by_4"
.IX Subsection "mult_div_by_4"
int
gfx_image_mult_div_by_4(Src1, Src2, Dest, length)
	unsigned char *Src1
	unsigned char *Src2
	unsigned char *Dest
	int length
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterMultDivby4(Src1, Src2, Dest, length);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "bit_and"
.IX Subsection "bit_and"
int
gfx_image_bit_and(Src1, Src2, Dest, length)
	unsigned char *Src1
	unsigned char *Src2
	unsigned char *Dest
	int length
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterBitAnd(Src1, Src2, Dest, length);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "bit_or"
.IX Subsection "bit_or"
int
gfx_image_bit_or(Src1, Src2, Dest, length)
	unsigned char *Src1
	unsigned char *Src2
	unsigned char *Dest
	int length
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterBitOr(Src1, Src2, Dest, length);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "div"
.IX Subsection "div"
int
gfx_image_div(Src1, Src2, Dest, length)
	unsigned char *Src1
	unsigned char *Src2
	unsigned char *Dest
	int length
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterDiv(Src1, Src2, Dest, length);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "bit_negation"
.IX Subsection "bit_negation"
int
gfx_image_bit_negation(Src1, Dest, length)
	unsigned char *Src1
	unsigned char *Dest
	int length
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterBitNegation(Src1, Dest, length);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "add_byte"
.IX Subsection "add_byte"
int
gfx_image_add_byte(Src1, Dest, length, C)
	unsigned char *Src1
	unsigned char *Dest
	int length
	unsigned char C
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterAddByte(Src1, Dest, length, C);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "add_uint"
.IX Subsection "add_uint"
int
gfx_image_add_uint(Src1, Dest, length, C)
	unsigned char *Src1
	unsigned char *Dest
	int length
	unsigned int C
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterAddUint(Src1, Dest, length, C);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "add_byte_to_half"
.IX Subsection "add_byte_to_half"
int
gfx_image_add_byte_to_half(Src1, Dest, length, C)
	unsigned char *Src1
	unsigned char *Dest
	int length
	unsigned char C
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterAddByteToHalf(Src1, Dest, length, C);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "sub_byte"
.IX Subsection "sub_byte"
int
gfx_image_sub_byte(Src1, Dest, length, C)
	unsigned char *Src1
	unsigned char *Dest
	int length
	unsigned char C
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterSubByte(Src1, Dest, length, C);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "sub_uint"
.IX Subsection "sub_uint"
int
gfx_image_sub_uint(Src1, Dest, length, C)
	unsigned char *Src1
	unsigned char *Dest
	int length
	unsigned int C
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterSubUint(Src1, Dest, length, C);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "shift_right"
.IX Subsection "shift_right"
int
gfx_image_shift_right(Src1, Dest, length, N)
	unsigned char *Src1
	unsigned char *Dest
	int length
	unsigned char N
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterShiftRight(Src1, Dest, length, N);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "shift_right_uint"
.IX Subsection "shift_right_uint"
int
gfx_image_shift_right_uint(Src1, Dest, length, N)
	unsigned char *Src1
	unsigned char *Dest
	int length
	unsigned char N
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterShiftRightUint(Src1, Dest, length, N);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "mult_by_byte"
.IX Subsection "mult_by_byte"
int
gfx_image_mult_by_byte(Src1, Dest, length, C)
	unsigned char *Src1
	unsigned char *Dest
	int length
	unsigned char C
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterMultByByte(Src1, Dest, length, C);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "shift_right_and_mult_by_byte"
.IX Subsection "shift_right_and_mult_by_byte"
int
gfx_image_shift_right_and_mult_by_byte(Src1, Dest, length, N, C)
	unsigned char *Src1
	unsigned char *Dest
	int length
	unsigned char N
	unsigned char C
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterShiftRightAndMultByByte(Src1, Dest, length, N, C);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "shift_left_byte"
.IX Subsection "shift_left_byte"
int
gfx_image_shift_left_byte(Src1, Dest, length, N)
	unsigned char *Src1
	unsigned char *Dest
	int length
	unsigned char N
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterShiftLeftByte(Src1, Dest, length, N);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "shift_left_uint"
.IX Subsection "shift_left_uint"
int
gfx_image_shift_left_uint(Src1, Dest, length, N)
	unsigned char *Src1
	unsigned char *Dest
	int length
	unsigned char N
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterShiftLeftUint(Src1, Dest, length, N);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "shift_left"
.IX Subsection "shift_left"
int
gfx_image_shift_left(Src1, Dest, length, N)
	unsigned char *Src1
	unsigned char *Dest
	int length
	unsigned char N
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterShiftLeft(Src1, Dest, length, N);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "binarize_using_threshold"
.IX Subsection "binarize_using_threshold"
int
gfx_image_binarize_using_threshold(Src1, Dest, length, T)
	unsigned char *Src1
	unsigned char *Dest
	int length
	unsigned char T
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterBinarizeUsingThreshold(Src1, Dest, length, T);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "clip_to_range"
.IX Subsection "clip_to_range"
int
gfx_image_clip_to_range(Src1, Dest, length, Tmin, Tmax)
	unsigned char *Src1
	unsigned char *Dest
	int length
	unsigned char Tmin
	unsigned char Tmax
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterClipToRange(Src1, Dest, length, Tmin, Tmax);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "normalize_linear"
.IX Subsection "normalize_linear"
int
gfx_image_normalize_linear(Src1, Dest, length, Cmin, Cmax, Nmin, Nmax)
	unsigned char *Src1
	unsigned char *Dest
	int length
	int Cmin
	int Cmax
	int Nmin
	int Nmax
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterNormalizeLinear(Src1, Dest, length, Cmin, Cmax, Nmin, Nmax);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "convolve_kernel_3x3_divide"
.IX Subsection "convolve_kernel_3x3_divide"
int
gfx_image_convolve_kernel_3x3_divide(Src, Dest, rows, columns, Kernel, Divisor)
	unsigned char *Src
	unsigned char *Dest
	int rows
	int columns
	Sint16 *Kernel
	unsigned char Divisor
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterConvolveKernel3x3Divide(Src, Dest, rows, columns, Kernel, Divisor);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "convolve_kernel_5x5_divide"
.IX Subsection "convolve_kernel_5x5_divide"
int
gfx_image_convolve_kernel_5x5_divide(Src, Dest, rows, columns, Kernel, Divisor)
	unsigned char *Src
	unsigned char *Dest
	int rows
	int columns
	Sint16 *Kernel
	unsigned char Divisor
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterConvolveKernel5x5Divide(Src, Dest, rows, columns, Kernel, Divisor);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "convolve_kernel_7x7_divide"
.IX Subsection "convolve_kernel_7x7_divide"
int
gfx_image_convolve_kernel_7x7_divide(Src, Dest, rows, columns, Kernel, Divisor)
	unsigned char *Src
	unsigned char *Dest
	int rows
	int columns
	Sint16 *Kernel
	unsigned char Divisor
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterConvolveKernel7x7Divide(Src, Dest, rows, columns, Kernel, Divisor);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "convolve_kernel_9x9_divide"
.IX Subsection "convolve_kernel_9x9_divide"
int
gfx_image_convolve_kernel_9x9_divide(Src, Dest, rows, columns, Kernel, Divisor)
	unsigned char *Src
	unsigned char *Dest
	int rows
	int columns
	Sint16 *Kernel
	unsigned char Divisor
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterConvolveKernel9x9Divide(Src, Dest, rows, columns, Kernel, Divisor);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "convolve_kernel_3x3_shift_right"
.IX Subsection "convolve_kernel_3x3_shift_right"
int
gfx_image_convolve_kernel_3x3_shift_right(Src, Dest, rows, columns, Kernel, NRightShift)
	unsigned char *Src
	unsigned char *Dest
	int rows
	int columns
	Sint16 *Kernel
	unsigned char NRightShift
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterConvolveKernel3x3ShiftRight(Src, Dest, rows, columns, Kernel, NRightShift);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "convolve_kernel_5x5_shift_right"
.IX Subsection "convolve_kernel_5x5_shift_right"
int
gfx_image_convolve_kernel_5x5_shift_right(Src, Dest, rows, columns, Kernel, NRightShift)
	unsigned char *Src
	unsigned char *Dest
	int rows
	int columns
	Sint16 *Kernel
	unsigned char NRightShift
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterConvolveKernel5x5ShiftRight(Src, Dest, rows, columns, Kernel, NRightShift);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "convolve_kernel_7x7_shift_right"
.IX Subsection "convolve_kernel_7x7_shift_right"
int
gfx_image_convolve_kernel_7x7_shift_right(Src, Dest, rows, columns, Kernel, NRightShift)
	unsigned char *Src
	unsigned char *Dest
	int rows
	int columns
	Sint16 *Kernel
	unsigned char NRightShift
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterConvolveKernel7x7ShiftRight(Src, Dest, rows, columns, Kernel, NRightShift);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "convolve_kernel_9x9_shift_right"
.IX Subsection "convolve_kernel_9x9_shift_right"
int
gfx_image_convolve_kernel_9x9_shift_right(Src, Dest, rows, columns, Kernel, NRightShift)
	unsigned char *Src
	unsigned char *Dest
	int rows
	int columns
	Sint16 *Kernel
	unsigned char NRightShift
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterConvolveKernel9x9ShiftRight(Src, Dest, rows, columns, Kernel, NRightShift);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "sobel_x"
.IX Subsection "sobel_x"
int
gfx_image_sobel_x(Src, Dest, rows, columns)
	unsigned char *Src
	unsigned char *Dest
	int rows
	int columns
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterSobelX(Src, Dest, rows, columns);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "sobel_x_shift_right"
.IX Subsection "sobel_x_shift_right"
int
gfx_image_sobel_x_shift_right(Src, Dest, rows, columns, NRightShift)
	unsigned char *Src
	unsigned char *Dest
	int rows
	int columns
	unsigned char NRightShift
	\s-1CODE:\s0
		\s-1RETVAL\s0 = SDL_imageFilterSobelXShiftRight(Src, Dest, rows, columns, NRightShift);
	\s-1OUTPUT:\s0
		\s-1RETVAL\s0
.SS "align_stack"
.IX Subsection "align_stack"
void
\&\fBgfx_image_align_stack()\fR
	\s-1CODE:\s0
		\fBSDL_imageFilterAlignStack()\fR;
.SS "restore_stack"
.IX Subsection "restore_stack"
void
\&\fBgfx_image_restore_stack()\fR
	\s-1CODE:\s0
		\fBSDL_imageFilterRestoreStack()\fR;
.SH "AUTHORS"
.IX Header "AUTHORS"
See \*(L"\s-1AUTHORS\*(R"\s0 in \s-1SDL\s0.