NAME

       SDL::GFX::ImageFilter - image filtering functions

CATEGORY

       TODO, GFX

METHODS

   MMX_detect
       int gfx_image_MMX_detect()      CODE:           SDL_imageFilterMMXdetect();

   MMX_off
       void gfx_image_MMX_off()      CODE:           SDL_imageFilterMMXoff();

   MMX_on
       void gfx_image_MMX_on()      CODE:           SDL_imageFilterMMXon();

   add
       int gfx_image_add(Src1, Src2, Dest, length)      unsigned char *Src1      unsigned char
       *Src2      unsigned char *Dest      int length      CODE:           RETVAL =
       SDL_imageFilterAdd(Src1, Src2, Dest, length);      OUTPUT:           RETVAL

   mean
       int gfx_image_mean(Src1, Src2, Dest, length)      unsigned char *Src1      unsigned char
       *Src2      unsigned char *Dest      int length      CODE:           RETVAL =
       SDL_imageFilterMean(Src1, Src2, Dest, length);      OUTPUT:           RETVAL

   sub
       int gfx_image_sub(Src1, Src2, Dest, length)      unsigned char *Src1      unsigned char
       *Src2      unsigned char *Dest      int length      CODE:           RETVAL =
       SDL_imageFilterSub(Src1, Src2, Dest, length);      OUTPUT:           RETVAL

   abs_diff
       int gfx_image_abs_diff(Src1, Src2, Dest, length)      unsigned char *Src1      unsigned
       char *Src2      unsigned char *Dest      int length      CODE:           RETVAL =
       SDL_imageFilterAbsDiff(Src1, Src2, Dest, length);      OUTPUT:           RETVAL

   mult
       int gfx_image_mult(Src1, Src2, Dest, length)      unsigned char *Src1      unsigned char
       *Src2      unsigned char *Dest      int length      CODE:           RETVAL =
       SDL_imageFilterMult(Src1, Src2, Dest, length);      OUTPUT:           RETVAL

   mult_nor
       int gfx_image_mult_nor(Src1, Src2, Dest, length)      unsigned char *Src1      unsigned
       char *Src2      unsigned char *Dest      int length      CODE:           RETVAL =
       SDL_imageFilterMultNor(Src1, Src2, Dest, length);      OUTPUT:           RETVAL

   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      CODE:
                 RETVAL = SDL_imageFilterMultDivby2(Src1, Src2, Dest, length);      OUTPUT:
                 RETVAL

   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      CODE:
                 RETVAL = SDL_imageFilterMultDivby4(Src1, Src2, Dest, length);      OUTPUT:
                 RETVAL

   bit_and
       int gfx_image_bit_and(Src1, Src2, Dest, length)      unsigned char *Src1      unsigned
       char *Src2      unsigned char *Dest      int length      CODE:           RETVAL =
       SDL_imageFilterBitAnd(Src1, Src2, Dest, length);      OUTPUT:           RETVAL

   bit_or
       int gfx_image_bit_or(Src1, Src2, Dest, length)      unsigned char *Src1      unsigned char
       *Src2      unsigned char *Dest      int length      CODE:           RETVAL =
       SDL_imageFilterBitOr(Src1, Src2, Dest, length);      OUTPUT:           RETVAL

   div
       int gfx_image_div(Src1, Src2, Dest, length)      unsigned char *Src1      unsigned char
       *Src2      unsigned char *Dest      int length      CODE:           RETVAL =
       SDL_imageFilterDiv(Src1, Src2, Dest, length);      OUTPUT:           RETVAL

   bit_negation
       int gfx_image_bit_negation(Src1, Dest, length)      unsigned char *Src1      unsigned char
       *Dest      int length      CODE:           RETVAL = SDL_imageFilterBitNegation(Src1, Dest,
       length);      OUTPUT:           RETVAL

   add_byte
       int gfx_image_add_byte(Src1, Dest, length, C)      unsigned char *Src1      unsigned char
       *Dest      int length      unsigned char C      CODE:           RETVAL =
       SDL_imageFilterAddByte(Src1, Dest, length, C);      OUTPUT:           RETVAL

   add_uint
       int gfx_image_add_uint(Src1, Dest, length, C)      unsigned char *Src1      unsigned char
       *Dest      int length      unsigned int C      CODE:           RETVAL =
       SDL_imageFilterAddUint(Src1, Dest, length, C);      OUTPUT:           RETVAL

   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      CODE:           RETVAL
       = SDL_imageFilterAddByteToHalf(Src1, Dest, length, C);      OUTPUT:           RETVAL

   sub_byte
       int gfx_image_sub_byte(Src1, Dest, length, C)      unsigned char *Src1      unsigned char
       *Dest      int length      unsigned char C      CODE:           RETVAL =
       SDL_imageFilterSubByte(Src1, Dest, length, C);      OUTPUT:           RETVAL

   sub_uint
       int gfx_image_sub_uint(Src1, Dest, length, C)      unsigned char *Src1      unsigned char
       *Dest      int length      unsigned int C      CODE:           RETVAL =
       SDL_imageFilterSubUint(Src1, Dest, length, C);      OUTPUT:           RETVAL

   shift_right
       int gfx_image_shift_right(Src1, Dest, length, N)      unsigned char *Src1      unsigned
       char *Dest      int length      unsigned char N      CODE:           RETVAL =
       SDL_imageFilterShiftRight(Src1, Dest, length, N);      OUTPUT:           RETVAL

   shift_right_uint
       int gfx_image_shift_right_uint(Src1, Dest, length, N)      unsigned char *Src1
            unsigned char *Dest      int length      unsigned char N      CODE:           RETVAL
       = SDL_imageFilterShiftRightUint(Src1, Dest, length, N);      OUTPUT:           RETVAL

   mult_by_byte
       int gfx_image_mult_by_byte(Src1, Dest, length, C)      unsigned char *Src1      unsigned
       char *Dest      int length      unsigned char C      CODE:           RETVAL =
       SDL_imageFilterMultByByte(Src1, Dest, length, C);      OUTPUT:           RETVAL

   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
            CODE:           RETVAL = SDL_imageFilterShiftRightAndMultByByte(Src1, Dest, length,
       N, C);      OUTPUT:           RETVAL

   shift_left_byte
       int gfx_image_shift_left_byte(Src1, Dest, length, N)      unsigned char *Src1
            unsigned char *Dest      int length      unsigned char N      CODE:           RETVAL
       = SDL_imageFilterShiftLeftByte(Src1, Dest, length, N);      OUTPUT:           RETVAL

   shift_left_uint
       int gfx_image_shift_left_uint(Src1, Dest, length, N)      unsigned char *Src1
            unsigned char *Dest      int length      unsigned char N      CODE:           RETVAL
       = SDL_imageFilterShiftLeftUint(Src1, Dest, length, N);      OUTPUT:           RETVAL

   shift_left
       int gfx_image_shift_left(Src1, Dest, length, N)      unsigned char *Src1      unsigned
       char *Dest      int length      unsigned char N      CODE:           RETVAL =
       SDL_imageFilterShiftLeft(Src1, Dest, length, N);      OUTPUT:           RETVAL

   binarize_using_threshold
       int gfx_image_binarize_using_threshold(Src1, Dest, length, T)      unsigned char *Src1
            unsigned char *Dest      int length      unsigned char T      CODE:           RETVAL
       = SDL_imageFilterBinarizeUsingThreshold(Src1, Dest, length, T);      OUTPUT:
                 RETVAL

   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
            CODE:           RETVAL = SDL_imageFilterClipToRange(Src1, Dest, length, Tmin, Tmax);
            OUTPUT:           RETVAL

   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      CODE:           RETVAL = SDL_imageFilterNormalizeLinear(Src1,
       Dest, length, Cmin, Cmax, Nmin, Nmax);      OUTPUT:           RETVAL

   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      CODE:           RETVAL =
       SDL_imageFilterConvolveKernel3x3Divide(Src, Dest, rows, columns, Kernel, Divisor);
            OUTPUT:           RETVAL

   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      CODE:           RETVAL =
       SDL_imageFilterConvolveKernel5x5Divide(Src, Dest, rows, columns, Kernel, Divisor);
            OUTPUT:           RETVAL

   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      CODE:           RETVAL =
       SDL_imageFilterConvolveKernel7x7Divide(Src, Dest, rows, columns, Kernel, Divisor);
            OUTPUT:           RETVAL

   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      CODE:           RETVAL =
       SDL_imageFilterConvolveKernel9x9Divide(Src, Dest, rows, columns, Kernel, Divisor);
            OUTPUT:           RETVAL

   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      CODE:           RETVAL =
       SDL_imageFilterConvolveKernel3x3ShiftRight(Src, Dest, rows, columns, Kernel, NRightShift);
            OUTPUT:           RETVAL

   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      CODE:           RETVAL =
       SDL_imageFilterConvolveKernel5x5ShiftRight(Src, Dest, rows, columns, Kernel, NRightShift);
            OUTPUT:           RETVAL

   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      CODE:           RETVAL =
       SDL_imageFilterConvolveKernel7x7ShiftRight(Src, Dest, rows, columns, Kernel, NRightShift);
            OUTPUT:           RETVAL

   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      CODE:           RETVAL =
       SDL_imageFilterConvolveKernel9x9ShiftRight(Src, Dest, rows, columns, Kernel, NRightShift);
            OUTPUT:           RETVAL

   sobel_x
       int gfx_image_sobel_x(Src, Dest, rows, columns)      unsigned char *Src      unsigned char
       *Dest      int rows      int columns      CODE:           RETVAL =
       SDL_imageFilterSobelX(Src, Dest, rows, columns);      OUTPUT:           RETVAL

   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      CODE:           RETVAL = SDL_imageFilterSobelXShiftRight(Src, Dest, rows,
       columns, NRightShift);      OUTPUT:           RETVAL

   align_stack
       void gfx_image_align_stack()      CODE:           SDL_imageFilterAlignStack();

   restore_stack
       void gfx_image_restore_stack()      CODE:           SDL_imageFilterRestoreStack();

AUTHORS

       See "AUTHORS" in SDL.