--- name: "SDL::GFX::ImageFilter" section: "3pm" platform: "linux" package: "libsdl-perl" version: "2.548-5+b1" release: "Debian 13 (Trixie)" platforms: ["linux"] url: "https://new.carta.tech/SDL::GFX::ImageFilter" --- # SDL::GFX::ImageFilter(3pm) image filtering functions ## 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.