SDL2_gfx
1.0.1
GraphicsprimitivesandsurfacefunctionsforSDL2
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "SDL.h"
#include "SDL2_imageFilter.h"
Go to the source code of this file.
Defines | |
#define | SWAP_32(x) (((x) >> 24) | (((x) & 0x00ff0000) >> 8) | (((x) & 0x0000ff00) << 8) | ((x) << 24)) |
Swaps the byte order in a 32bit integer (LSB becomes MSB, etc.). | |
Functions | |
int | SDL_imageFilterMMXdetect (void) |
MMX detection routine (with override flag). | |
void | SDL_imageFilterMMXoff () |
Disable MMX check for filter functions and and force to use non-MMX C based code. | |
void | SDL_imageFilterMMXon () |
Enable MMX check for filter functions and use MMX code if available. | |
int | SDL_imageFilterAdd (unsigned char *Src1, unsigned char *Src2, unsigned char *Dest, unsigned int length) |
Filter using Add: D = saturation255(S1 + S2) | |
int | SDL_imageFilterMean (unsigned char *Src1, unsigned char *Src2, unsigned char *Dest, unsigned int length) |
Filter using Mean: D = S1/2 + S2/2. | |
int | SDL_imageFilterSub (unsigned char *Src1, unsigned char *Src2, unsigned char *Dest, unsigned int length) |
Filter using Sub: D = saturation0(S1 - S2) | |
int | SDL_imageFilterAbsDiff (unsigned char *Src1, unsigned char *Src2, unsigned char *Dest, unsigned int length) |
Filter using AbsDiff: D = | S1 - S2 |. | |
int | SDL_imageFilterMult (unsigned char *Src1, unsigned char *Src2, unsigned char *Dest, unsigned int length) |
Filter using Mult: D = saturation255(S1 * S2) | |
int | SDL_imageFilterMultNorASM (unsigned char *Src1, unsigned char *Src2, unsigned char *Dest, unsigned int SrcLength) |
Internal ASM Filter using MultNor: D = S1 * S2. | |
int | SDL_imageFilterMultNor (unsigned char *Src1, unsigned char *Src2, unsigned char *Dest, unsigned int length) |
Filter using MultNor: D = S1 * S2. | |
int | SDL_imageFilterMultDivby2 (unsigned char *Src1, unsigned char *Src2, unsigned char *Dest, unsigned int length) |
Filter using MultDivby2: D = saturation255(S1/2 * S2) | |
int | SDL_imageFilterMultDivby4 (unsigned char *Src1, unsigned char *Src2, unsigned char *Dest, unsigned int length) |
Filter using MultDivby4: D = saturation255(S1/2 * S2/2) | |
int | SDL_imageFilterBitAnd (unsigned char *Src1, unsigned char *Src2, unsigned char *Dest, unsigned int length) |
Filter using BitAnd: D = S1 & S2. | |
int | SDL_imageFilterBitOr (unsigned char *Src1, unsigned char *Src2, unsigned char *Dest, unsigned int length) |
Filter using BitOr: D = S1 | S2. | |
int | SDL_imageFilterDiv (unsigned char *Src1, unsigned char *Src2, unsigned char *Dest, unsigned int length) |
Filter using Div: D = S1 / S2. | |
int | SDL_imageFilterBitNegation (unsigned char *Src1, unsigned char *Dest, unsigned int length) |
Filter using BitNegation: D = !S. | |
int | SDL_imageFilterAddByte (unsigned char *Src1, unsigned char *Dest, unsigned int length, unsigned char C) |
Filter using AddByte: D = saturation255(S + C) | |
int | SDL_imageFilterAddUint (unsigned char *Src1, unsigned char *Dest, unsigned int length, unsigned int C) |
Filter using AddUint: D = saturation255((S[i] + Cs[i % 4]), Cs=Swap32((uint)C) | |
int | SDL_imageFilterAddByteToHalf (unsigned char *Src1, unsigned char *Dest, unsigned int length, unsigned char C) |
Filter using AddByteToHalf: D = saturation255(S/2 + C) | |
int | SDL_imageFilterSubByteMMX (unsigned char *Src1, unsigned char *Dest, unsigned int SrcLength, unsigned char C) |
Internal MMX Filter using SubByte: D = saturation0(S - C) | |
int | SDL_imageFilterSubByte (unsigned char *Src1, unsigned char *Dest, unsigned int length, unsigned char C) |
Filter using SubByte: D = saturation0(S - C) | |
int | SDL_imageFilterSubUint (unsigned char *Src1, unsigned char *Dest, unsigned int length, unsigned int C) |
Filter using SubUint: D = saturation0(S[i] - Cs[i % 4]), Cs=Swap32((uint)C) | |
int | SDL_imageFilterShiftRight (unsigned char *Src1, unsigned char *Dest, unsigned int length, unsigned char N) |
Filter using ShiftRight: D = saturation0(S >> N) | |
int | SDL_imageFilterShiftRightUint (unsigned char *Src1, unsigned char *Dest, unsigned int length, unsigned char N) |
Filter using ShiftRightUint: D = saturation0((uint)S[i] >> N) | |
int | SDL_imageFilterMultByByte (unsigned char *Src1, unsigned char *Dest, unsigned int length, unsigned char C) |
Filter using MultByByte: D = saturation255(S * C) | |
int | SDL_imageFilterShiftRightAndMultByByte (unsigned char *Src1, unsigned char *Dest, unsigned int length, unsigned char N, unsigned char C) |
Filter using ShiftRightAndMultByByte: D = saturation255((S >> N) * C) | |
int | SDL_imageFilterShiftLeftByte (unsigned char *Src1, unsigned char *Dest, unsigned int length, unsigned char N) |
Filter using ShiftLeftByte: D = (S << N) | |
int | SDL_imageFilterShiftLeftUint (unsigned char *Src1, unsigned char *Dest, unsigned int length, unsigned char N) |
Filter using ShiftLeftUint: D = ((uint)S << N) | |
int | SDL_imageFilterShiftLeft (unsigned char *Src1, unsigned char *Dest, unsigned int length, unsigned char N) |
Filter ShiftLeft: D = saturation255(S << N) | |
int | SDL_imageFilterBinarizeUsingThreshold (unsigned char *Src1, unsigned char *Dest, unsigned int length, unsigned char T) |
Filter using BinarizeUsingThreshold: D = (S >= T) ? 255:0. | |
int | SDL_imageFilterClipToRange (unsigned char *Src1, unsigned char *Dest, unsigned int length, unsigned char Tmin, unsigned char Tmax) |
Filter using ClipToRange: D = (S >= Tmin) & (S <= Tmax) S:Tmin | Tmax. | |
int | SDL_imageFilterNormalizeLinear (unsigned char *Src, unsigned char *Dest, unsigned int length, int Cmin, int Cmax, int Nmin, int Nmax) |
Filter using NormalizeLinear: D = saturation255((Nmax - Nmin)/(Cmax - Cmin)*(S - Cmin) + Nmin) | |
int | SDL_imageFilterConvolveKernel3x3Divide (unsigned char *Src, unsigned char *Dest, int rows, int columns, signed short *Kernel, unsigned char Divisor) |
Filter using ConvolveKernel3x3Divide: Dij = saturation0and255( ... ) | |
int | SDL_imageFilterConvolveKernel5x5Divide (unsigned char *Src, unsigned char *Dest, int rows, int columns, signed short *Kernel, unsigned char Divisor) |
Filter using ConvolveKernel5x5Divide: Dij = saturation0and255( ... ) | |
int | SDL_imageFilterConvolveKernel7x7Divide (unsigned char *Src, unsigned char *Dest, int rows, int columns, signed short *Kernel, unsigned char Divisor) |
Filter using ConvolveKernel7x7Divide: Dij = saturation0and255( ... ) | |
int | SDL_imageFilterConvolveKernel9x9Divide (unsigned char *Src, unsigned char *Dest, int rows, int columns, signed short *Kernel, unsigned char Divisor) |
Filter using ConvolveKernel9x9Divide: Dij = saturation0and255( ... ) | |
int | SDL_imageFilterConvolveKernel3x3ShiftRight (unsigned char *Src, unsigned char *Dest, int rows, int columns, signed short *Kernel, unsigned char NRightShift) |
Filter using ConvolveKernel3x3ShiftRight: Dij = saturation0and255( ... ) | |
int | SDL_imageFilterConvolveKernel5x5ShiftRight (unsigned char *Src, unsigned char *Dest, int rows, int columns, signed short *Kernel, unsigned char NRightShift) |
Filter using ConvolveKernel5x5ShiftRight: Dij = saturation0and255( ... ) | |
int | SDL_imageFilterConvolveKernel7x7ShiftRight (unsigned char *Src, unsigned char *Dest, int rows, int columns, signed short *Kernel, unsigned char NRightShift) |
Filter using ConvolveKernel7x7ShiftRight: Dij = saturation0and255( ... ) | |
int | SDL_imageFilterConvolveKernel9x9ShiftRight (unsigned char *Src, unsigned char *Dest, int rows, int columns, signed short *Kernel, unsigned char NRightShift) |
Filter using ConvolveKernel9x9ShiftRight: Dij = saturation255( ... ) | |
int | SDL_imageFilterSobelX (unsigned char *Src, unsigned char *Dest, int rows, int columns) |
Filter using SobelX: Dij = saturation255( ... ) | |
int | SDL_imageFilterSobelXShiftRight (unsigned char *Src, unsigned char *Dest, int rows, int columns, unsigned char NRightShift) |
Filter using SobelXShiftRight: Dij = saturation255( ... ) | |
void | SDL_imageFilterAlignStack (void) |
Align stack to 32 byte boundary,. | |
void | SDL_imageFilterRestoreStack (void) |
Restore previously aligned stack. |
#define SWAP_32 | ( | x | ) | (((x) >> 24) | (((x) & 0x00ff0000) >> 8) | (((x) & 0x0000ff00) << 8) | ((x) << 24)) |
Swaps the byte order in a 32bit integer (LSB becomes MSB, etc.).
Definition at line 61 of file SDL2_imageFilter.c.
int SDL_imageFilterAbsDiff | ( | unsigned char * | Src1, |
unsigned char * | Src2, | ||
unsigned char * | Dest, | ||
unsigned int | length | ||
) |
Filter using AbsDiff: D = | S1 - S2 |.
Src1 | Pointer to the start of the first source byte array (S1). |
Src2 | Pointer to the start of the second source byte array (S2). |
Dest | Pointer to the start of the destination byte array (D). |
length | The number of bytes in the source arrays. |
Definition at line 542 of file SDL2_imageFilter.c.
int SDL_imageFilterAdd | ( | unsigned char * | Src1, |
unsigned char * | Src2, | ||
unsigned char * | Dest, | ||
unsigned int | length | ||
) |
Filter using Add: D = saturation255(S1 + S2)
Src1 | Pointer to the start of the first source byte array (S1). |
Src2 | Pointer to the start of the second source byte array (S2). |
Dest | Pointer to the start of the destination byte array (D). |
length | The number of bytes in the source arrays. |
Definition at line 173 of file SDL2_imageFilter.c.
int SDL_imageFilterAddByte | ( | unsigned char * | Src1, |
unsigned char * | Dest, | ||
unsigned int | length, | ||
unsigned char | C | ||
) |
Filter using AddByte: D = saturation255(S + C)
Src1 | Pointer to the start of the source byte array (S). |
Dest | Pointer to the start of the destination byte array (D). |
length | The number of bytes in the source array. |
C | Constant value to add (C). |
Definition at line 1791 of file SDL2_imageFilter.c.
int SDL_imageFilterAddByteToHalf | ( | unsigned char * | Src1, |
unsigned char * | Dest, | ||
unsigned int | length, | ||
unsigned char | C | ||
) |
Filter using AddByteToHalf: D = saturation255(S/2 + C)
Src1 | Pointer to the start of the source byte array (S). |
Dest | Pointer to the start of the destination byte array (D). |
length | The number of bytes in the source array. |
C | Constant to add (C). |
Definition at line 2068 of file SDL2_imageFilter.c.
int SDL_imageFilterAddUint | ( | unsigned char * | Src1, |
unsigned char * | Dest, | ||
unsigned int | length, | ||
unsigned int | C | ||
) |
Filter using AddUint: D = saturation255((S[i] + Cs[i % 4]), Cs=Swap32((uint)C)
Src1 | Pointer to the start of the source byte array (S). |
Dest | Pointer to the start of the destination byte array (D). |
length | The number of bytes in the source array. |
C | Constant to add (C). |
Definition at line 1919 of file SDL2_imageFilter.c.
void SDL_imageFilterAlignStack | ( | void | ) |
Align stack to 32 byte boundary,.
Definition at line 7326 of file SDL2_imageFilter.c.
int SDL_imageFilterBinarizeUsingThreshold | ( | unsigned char * | Src1, |
unsigned char * | Dest, | ||
unsigned int | length, | ||
unsigned char | T | ||
) |
Filter using BinarizeUsingThreshold: D = (S >= T) ? 255:0.
Src1 | Pointer to the start of the source byte array (S). |
Dest | Pointer to the start of the destination byte array (D). |
length | The number of bytes in the source array. |
T | The threshold boundary (inclusive). |
Definition at line 3534 of file SDL2_imageFilter.c.
int SDL_imageFilterBitAnd | ( | unsigned char * | Src1, |
unsigned char * | Src2, | ||
unsigned char * | Dest, | ||
unsigned int | length | ||
) |
Filter using BitAnd: D = S1 & S2.
Src1 | Pointer to the start of the first source byte array (S1). |
Src2 | Pointer to the start of the second source byte array (S2). |
Dest | Pointer to the start of the destination byte array (D). |
length | The number of bytes in the source arrays. |
Definition at line 1278 of file SDL2_imageFilter.c.
int SDL_imageFilterBitNegation | ( | unsigned char * | Src1, |
unsigned char * | Dest, | ||
unsigned int | length | ||
) |
Filter using BitNegation: D = !S.
Src1 | Pointer to the start of the source byte array (S). |
Dest | Pointer to the start of the destination byte array (D). |
length | The number of bytes in the source array. |
Definition at line 1671 of file SDL2_imageFilter.c.
int SDL_imageFilterBitOr | ( | unsigned char * | Src1, |
unsigned char * | Src2, | ||
unsigned char * | Dest, | ||
unsigned int | length | ||
) |
Filter using BitOr: D = S1 | S2.
Src1 | Pointer to the start of the first source byte array (S1). |
Src2 | Pointer to the start of the second source byte array (S2). |
Dest | Pointer to the start of the destination byte array (D). |
length | The number of bytes in the source arrays. |
Definition at line 1392 of file SDL2_imageFilter.c.
int SDL_imageFilterClipToRange | ( | unsigned char * | Src1, |
unsigned char * | Dest, | ||
unsigned int | length, | ||
unsigned char | Tmin, | ||
unsigned char | Tmax | ||
) |
Filter using ClipToRange: D = (S >= Tmin) & (S <= Tmax) S:Tmin | Tmax.
Src1 | Pointer to the start of the source byte array (S). |
Dest | Pointer to the start of the destination byte array (D). |
length | The number of bytes in the source array. |
Tmin | Lower (inclusive) boundary of the clipping range. |
Tmax | Upper (inclusive) boundary of the clipping range. |
Definition at line 3691 of file SDL2_imageFilter.c.
int SDL_imageFilterConvolveKernel3x3Divide | ( | unsigned char * | Src, |
unsigned char * | Dest, | ||
int | rows, | ||
int | columns, | ||
signed short * | Kernel, | ||
unsigned char | Divisor | ||
) |
Filter using ConvolveKernel3x3Divide: Dij = saturation0and255( ... )
Src | The source 2D byte array to convolve. Should be different from destination. |
Dest | The destination 2D byte array to store the result in. Should be different from source. |
rows | Number of rows in source/destination array. Must be >2. |
columns | Number of columns in source/destination array. Must be >2. |
Kernel | The 2D convolution kernel of size 3x3. |
Divisor | The divisor of the convolution sum. Must be >0. |
Note: Non-MMX implementation not available for this function.
Definition at line 3980 of file SDL2_imageFilter.c.
int SDL_imageFilterConvolveKernel3x3ShiftRight | ( | unsigned char * | Src, |
unsigned char * | Dest, | ||
int | rows, | ||
int | columns, | ||
signed short * | Kernel, | ||
unsigned char | NRightShift | ||
) |
Filter using ConvolveKernel3x3ShiftRight: Dij = saturation0and255( ... )
Src | The source 2D byte array to convolve. Should be different from destination. |
Dest | The destination 2D byte array to store the result in. Should be different from source. |
rows | Number of rows in source/destination array. Must be >2. |
columns | Number of columns in source/destination array. Must be >2. |
Kernel | The 2D convolution kernel of size 3x3. |
NRightShift | The number of right bit shifts to apply to the convolution sum. Must be <7. |
Note: Non-MMX implementation not available for this function.
Definition at line 5378 of file SDL2_imageFilter.c.
int SDL_imageFilterConvolveKernel5x5Divide | ( | unsigned char * | Src, |
unsigned char * | Dest, | ||
int | rows, | ||
int | columns, | ||
signed short * | Kernel, | ||
unsigned char | Divisor | ||
) |
Filter using ConvolveKernel5x5Divide: Dij = saturation0and255( ... )
Src | The source 2D byte array to convolve. Should be different from destination. |
Dest | The destination 2D byte array to store the result in. Should be different from source. |
rows | Number of rows in source/destination array. Must be >4. |
columns | Number of columns in source/destination array. Must be >4. |
Kernel | The 2D convolution kernel of size 5x5. |
Divisor | The divisor of the convolution sum. Must be >0. |
Note: Non-MMX implementation not available for this function.
Definition at line 4170 of file SDL2_imageFilter.c.
int SDL_imageFilterConvolveKernel5x5ShiftRight | ( | unsigned char * | Src, |
unsigned char * | Dest, | ||
int | rows, | ||
int | columns, | ||
signed short * | Kernel, | ||
unsigned char | NRightShift | ||
) |
Filter using ConvolveKernel5x5ShiftRight: Dij = saturation0and255( ... )
Src | The source 2D byte array to convolve. Should be different from destination. |
Dest | The destination 2D byte array to store the result in. Should be different from source. |
rows | Number of rows in source/destination array. Must be >4. |
columns | Number of columns in source/destination array. Must be >4. |
Kernel | The 2D convolution kernel of size 5x5. |
NRightShift | The number of right bit shifts to apply to the convolution sum. Must be <7. |
Note: Non-MMX implementation not available for this function.
Definition at line 5555 of file SDL2_imageFilter.c.
int SDL_imageFilterConvolveKernel7x7Divide | ( | unsigned char * | Src, |
unsigned char * | Dest, | ||
int | rows, | ||
int | columns, | ||
signed short * | Kernel, | ||
unsigned char | Divisor | ||
) |
Filter using ConvolveKernel7x7Divide: Dij = saturation0and255( ... )
Src | The source 2D byte array to convolve. Should be different from destination. |
Dest | The destination 2D byte array to store the result in. Should be different from source. |
rows | Number of rows in source/destination array. Must be >6. |
columns | Number of columns in source/destination array. Must be >6. |
Kernel | The 2D convolution kernel of size 7x7. |
Divisor | The divisor of the convolution sum. Must be >0. |
Note: Non-MMX implementation not available for this function.
Definition at line 4473 of file SDL2_imageFilter.c.
int SDL_imageFilterConvolveKernel7x7ShiftRight | ( | unsigned char * | Src, |
unsigned char * | Dest, | ||
int | rows, | ||
int | columns, | ||
signed short * | Kernel, | ||
unsigned char | NRightShift | ||
) |
Filter using ConvolveKernel7x7ShiftRight: Dij = saturation0and255( ... )
Src | The source 2D byte array to convolve. Should be different from destination. |
Dest | The destination 2D byte array to store the result in. Should be different from source. |
rows | Number of rows in source/destination array. Must be >6. |
columns | Number of columns in source/destination array. Must be >6. |
Kernel | The 2D convolution kernel of size 7x7. |
NRightShift | The number of right bit shifts to apply to the convolution sum. Must be <7. |
Note: Non-MMX implementation not available for this function.
Definition at line 5856 of file SDL2_imageFilter.c.
int SDL_imageFilterConvolveKernel9x9Divide | ( | unsigned char * | Src, |
unsigned char * | Dest, | ||
int | rows, | ||
int | columns, | ||
signed short * | Kernel, | ||
unsigned char | Divisor | ||
) |
Filter using ConvolveKernel9x9Divide: Dij = saturation0and255( ... )
Src | The source 2D byte array to convolve. Should be different from destination. |
Dest | The destination 2D byte array to store the result in. Should be different from source. |
rows | Number of rows in source/destination array. Must be >8. |
columns | Number of columns in source/destination array. Must be >8. |
Kernel | The 2D convolution kernel of size 9x9. |
Divisor | The divisor of the convolution sum. Must be >0. |
Note: Non-MMX implementation not available for this function.
Definition at line 4830 of file SDL2_imageFilter.c.
int SDL_imageFilterConvolveKernel9x9ShiftRight | ( | unsigned char * | Src, |
unsigned char * | Dest, | ||
int | rows, | ||
int | columns, | ||
signed short * | Kernel, | ||
unsigned char | NRightShift | ||
) |
Filter using ConvolveKernel9x9ShiftRight: Dij = saturation255( ... )
Src | The source 2D byte array to convolve. Should be different from destination. |
Dest | The destination 2D byte array to store the result in. Should be different from source. |
rows | Number of rows in source/destination array. Must be >8. |
columns | Number of columns in source/destination array. Must be >8. |
Kernel | The 2D convolution kernel of size 9x9. |
NRightShift | The number of right bit shifts to apply to the convolution sum. Must be <7. |
Note: Non-MMX implementation not available for this function.
Definition at line 6219 of file SDL2_imageFilter.c.
int SDL_imageFilterDiv | ( | unsigned char * | Src1, |
unsigned char * | Src2, | ||
unsigned char * | Dest, | ||
unsigned int | length | ||
) |
Filter using Div: D = S1 / S2.
Src1 | Pointer to the start of the first source byte array (S1). |
Src2 | Pointer to the start of the second source byte array (S2). |
Dest | Pointer to the start of the destination byte array (D). |
length | The number of bytes in the source arrays. |
Definition at line 1549 of file SDL2_imageFilter.c.
int SDL_imageFilterMean | ( | unsigned char * | Src1, |
unsigned char * | Src2, | ||
unsigned char * | Dest, | ||
unsigned int | length | ||
) |
Filter using Mean: D = S1/2 + S2/2.
Src1 | Pointer to the start of the first source byte array (S1). |
Src2 | Pointer to the start of the second source byte array (S2). |
Dest | Pointer to the start of the destination byte array (D). |
length | The number of bytes in the source arrays. |
Definition at line 308 of file SDL2_imageFilter.c.
int SDL_imageFilterMMXdetect | ( | void | ) |
MMX detection routine (with override flag).
Definition at line 80 of file SDL2_imageFilter.c.
void SDL_imageFilterMMXoff | ( | void | ) |
Disable MMX check for filter functions and and force to use non-MMX C based code.
Definition at line 93 of file SDL2_imageFilter.c.
void SDL_imageFilterMMXon | ( | void | ) |
Enable MMX check for filter functions and use MMX code if available.
Definition at line 101 of file SDL2_imageFilter.c.
int SDL_imageFilterMult | ( | unsigned char * | Src1, |
unsigned char * | Src2, | ||
unsigned char * | Dest, | ||
unsigned int | length | ||
) |
Filter using Mult: D = saturation255(S1 * S2)
Src1 | Pointer to the start of the first source byte array (S1). |
Src2 | Pointer to the start of the second source byte array (S2). |
Dest | Pointer to the start of the destination byte array (D). |
length | The number of bytes in the source arrays. |
Definition at line 729 of file SDL2_imageFilter.c.
int SDL_imageFilterMultByByte | ( | unsigned char * | Src1, |
unsigned char * | Dest, | ||
unsigned int | length, | ||
unsigned char | C | ||
) |
Filter using MultByByte: D = saturation255(S * C)
Src1 | Pointer to the start of the source byte array (S). |
Dest | Pointer to the start of the destination byte array (D). |
length | The number of bytes in the source arrays. |
C | Constant to multiply with (C). |
Definition at line 2790 of file SDL2_imageFilter.c.
int SDL_imageFilterMultDivby2 | ( | unsigned char * | Src1, |
unsigned char * | Src2, | ||
unsigned char * | Dest, | ||
unsigned int | length | ||
) |
Filter using MultDivby2: D = saturation255(S1/2 * S2)
Src1 | Pointer to the start of the first source byte array (S1). |
Src2 | Pointer to the start of the second source byte array (S2). |
Dest | Pointer to the start of the destination byte array (D). |
length | The number of bytes in the source arrays. |
Definition at line 1000 of file SDL2_imageFilter.c.
int SDL_imageFilterMultDivby4 | ( | unsigned char * | Src1, |
unsigned char * | Src2, | ||
unsigned char * | Dest, | ||
unsigned int | length | ||
) |
Filter using MultDivby4: D = saturation255(S1/2 * S2/2)
Src1 | Pointer to the start of the first source byte array (S1). |
Src2 | Pointer to the start of the second source byte array (S2). |
Dest | Pointer to the start of the destination byte array (D). |
length | The number of bytes in the source arrays. |
Definition at line 1141 of file SDL2_imageFilter.c.
int SDL_imageFilterMultNor | ( | unsigned char * | Src1, |
unsigned char * | Src2, | ||
unsigned char * | Dest, | ||
unsigned int | length | ||
) |
Filter using MultNor: D = S1 * S2.
Src1 | Pointer to the start of the first source byte array (S1). |
Src2 | Pointer to the start of the second source byte array (S2). |
Dest | Pointer to the start of the destination byte array (D). |
length | The number of bytes in the source arrays. |
Definition at line 862 of file SDL2_imageFilter.c.
int SDL_imageFilterMultNorASM | ( | unsigned char * | Src1, |
unsigned char * | Src2, | ||
unsigned char * | Dest, | ||
unsigned int | SrcLength | ||
) |
Internal ASM Filter using MultNor: D = S1 * S2.
Src1 | Pointer to the start of the first source byte array (S1). |
Src2 | Pointer to the start of the second source byte array (S2). |
Dest | Pointer to the start of the destination byte array (D). |
SrcLength | The number of bytes in the source arrays. |
Definition at line 792 of file SDL2_imageFilter.c.
int SDL_imageFilterNormalizeLinear | ( | unsigned char * | Src, |
unsigned char * | Dest, | ||
unsigned int | length, | ||
int | Cmin, | ||
int | Cmax, | ||
int | Nmin, | ||
int | Nmax | ||
) |
Filter using NormalizeLinear: D = saturation255((Nmax - Nmin)/(Cmax - Cmin)*(S - Cmin) + Nmin)
Src | Pointer to the start of the source byte array (S). |
Dest | Pointer to the start of the destination byte array (D). |
length | The number of bytes in the source array. |
Cmin | Normalization constant. |
Cmax | Normalization constant. |
Nmin | Normalization constant. |
Nmax | Normalization constant. |
Definition at line 3909 of file SDL2_imageFilter.c.
void SDL_imageFilterRestoreStack | ( | void | ) |
Restore previously aligned stack.
Definition at line 7354 of file SDL2_imageFilter.c.
int SDL_imageFilterShiftLeft | ( | unsigned char * | Src1, |
unsigned char * | Dest, | ||
unsigned int | length, | ||
unsigned char | N | ||
) |
Filter ShiftLeft: D = saturation255(S << N)
Src1 | Pointer to the start of the source byte array (S1). |
Dest | Pointer to the start of the destination byte array (D). |
length | The number of bytes in the source array. |
N | Number of bit-positions to shift (N). Valid range is 0 to 8. |
Definition at line 3393 of file SDL2_imageFilter.c.
int SDL_imageFilterShiftLeftByte | ( | unsigned char * | Src1, |
unsigned char * | Dest, | ||
unsigned int | length, | ||
unsigned char | N | ||
) |
Filter using ShiftLeftByte: D = (S << N)
Src1 | Pointer to the start of the source byte array (S). |
Dest | Pointer to the start of the destination byte array (D). |
length | The number of bytes in the source arrays. |
N | Number of bit-positions to shift (N). Valid range is 0 to 8. |
Definition at line 3093 of file SDL2_imageFilter.c.
int SDL_imageFilterShiftLeftUint | ( | unsigned char * | Src1, |
unsigned char * | Dest, | ||
unsigned int | length, | ||
unsigned char | N | ||
) |
Filter using ShiftLeftUint: D = ((uint)S << N)
Src1 | Pointer to the start of the source byte array (S). |
Dest | Pointer to the start of the destination byte array (D). |
length | The number of bytes in the source array. |
N | Number of bit-positions to shift (N). Valid range is 0 to 32. |
Definition at line 3210 of file SDL2_imageFilter.c.
int SDL_imageFilterShiftRight | ( | unsigned char * | Src1, |
unsigned char * | Dest, | ||
unsigned int | length, | ||
unsigned char | N | ||
) |
Filter using ShiftRight: D = saturation0(S >> N)
Src1 | Pointer to the start of the source byte array (S). |
Dest | Pointer to the start of the destination byte array (D). |
length | The number of bytes in the source array. |
N | Number of bit-positions to shift (N). Valid range is 0 to 8. |
Definition at line 2476 of file SDL2_imageFilter.c.
int SDL_imageFilterShiftRightAndMultByByte | ( | unsigned char * | Src1, |
unsigned char * | Dest, | ||
unsigned int | length, | ||
unsigned char | N, | ||
unsigned char | C | ||
) |
Filter using ShiftRightAndMultByByte: D = saturation255((S >> N) * C)
Src1 | Pointer to the start of the source byte array (S). |
Dest | Pointer to the start of the destination byte array (D). |
length | The number of bytes in the source array. |
N | Number of bit-positions to shift (N). Valid range is 0 to 8. |
C | Constant to multiply with (C). |
Definition at line 2943 of file SDL2_imageFilter.c.
int SDL_imageFilterShiftRightUint | ( | unsigned char * | Src1, |
unsigned char * | Dest, | ||
unsigned int | length, | ||
unsigned char | N | ||
) |
Filter using ShiftRightUint: D = saturation0((uint)S[i] >> N)
Src1 | Pointer to the start of the source byte array (S1). |
Dest | Pointer to the start of the destination byte array (D). |
length | The number of bytes in the source array. |
N | Number of bit-positions to shift (N). Valid range is 0 to 32. |
Definition at line 2594 of file SDL2_imageFilter.c.
int SDL_imageFilterSobelX | ( | unsigned char * | Src, |
unsigned char * | Dest, | ||
int | rows, | ||
int | columns | ||
) |
Filter using SobelX: Dij = saturation255( ... )
Src | The source 2D byte array to sobel-filter. Should be different from destination. |
Dest | The destination 2D byte array to store the result in. Should be different from source. |
rows | Number of rows in source/destination array. Must be >2. |
columns | Number of columns in source/destination array. Must be >7. |
Note: Non-MMX implementation not available for this function.
Definition at line 6799 of file SDL2_imageFilter.c.
int SDL_imageFilterSobelXShiftRight | ( | unsigned char * | Src, |
unsigned char * | Dest, | ||
int | rows, | ||
int | columns, | ||
unsigned char | NRightShift | ||
) |
Filter using SobelXShiftRight: Dij = saturation255( ... )
Src | The source 2D byte array to sobel-filter. Should be different from destination. |
Dest | The destination 2D byte array to store the result in. Should be different from source. |
rows | Number of rows in source/destination array. Must be >2. |
columns | Number of columns in source/destination array. Must be >8. |
NRightShift | The number of right bit shifts to apply to the filter sum. Must be <7. |
Note: Non-MMX implementation not available for this function.
Definition at line 7052 of file SDL2_imageFilter.c.
int SDL_imageFilterSub | ( | unsigned char * | Src1, |
unsigned char * | Src2, | ||
unsigned char * | Dest, | ||
unsigned int | length | ||
) |
Filter using Sub: D = saturation0(S1 - S2)
Src1 | Pointer to the start of the first source byte array (S1). |
Src2 | Pointer to the start of the second source byte array (S2). |
Dest | Pointer to the start of the destination byte array (D). |
length | The number of bytes in the source arrays. |
Definition at line 422 of file SDL2_imageFilter.c.
int SDL_imageFilterSubByte | ( | unsigned char * | Src1, |
unsigned char * | Dest, | ||
unsigned int | length, | ||
unsigned char | C | ||
) |
Filter using SubByte: D = saturation0(S - C)
Src1 | Pointer to the start of the source byte array (S). |
Dest | Pointer to the start of the destination byte array (D). |
length | The number of bytes in the source arrays. |
C | Constant to subtract (C). |
Definition at line 2196 of file SDL2_imageFilter.c.
int SDL_imageFilterSubByteMMX | ( | unsigned char * | Src1, |
unsigned char * | Dest, | ||
unsigned int | SrcLength, | ||
unsigned char | C | ||
) |
Internal MMX Filter using SubByte: D = saturation0(S - C)
Src1 | Pointer to the start of the source byte array (S). |
Dest | Pointer to the start of the destination byte array (D). |
SrcLength | The number of bytes in the source array. |
C | Constant to subtract (C). |
Definition at line 2130 of file SDL2_imageFilter.c.
int SDL_imageFilterSubUint | ( | unsigned char * | Src1, |
unsigned char * | Dest, | ||
unsigned int | length, | ||
unsigned int | C | ||
) |
Filter using SubUint: D = saturation0(S[i] - Cs[i % 4]), Cs=Swap32((uint)C)
Src1 | Pointer to the start of the source byte array (S1). |
Dest | Pointer to the start of the destination byte array (D). |
length | The number of bytes in the source array. |
C | Constant to subtract (C). |
Definition at line 2325 of file SDL2_imageFilter.c.