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gflBrigthness
== gflBrigthness ==


The gflBrigthness function increase or decrease the brightness of a picture.  
The gflBrigthness function increase or decrease the brightness of a picture.  


GFL_ERROR <b>gflBrigthness</b>(
  GFL_BITMAP* src, 
  GFL_BITMAP** dst, 
  GFL_INT32 brightness
);


GFL_ERROR gflBrigthness(
'''Parameters'''
  GFL_BITMAP * src, 
  GFL_BITMAP ** dst, 
  GFL_INT32 brightness
);
 
Parameters  
 
src
Pointer to a GFL_BITMAP structure.
dst
Address of a pointer to a GFL_BITMAP structure.
NULL if on the same instance.
brightness
An integer between -255 and 255.
 
Return value
 
The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.
 


:src
::Pointer to a GFL_BITMAP structure.
:dst
::Address of a pointer to a GFL_BITMAP structure. NULL if on the same instance.
:brightness
::An integer between -255 and 255.


See also
'''Return value'''
:The function returns GFL_NO_ERROR if it is successful or a value of [[Error|GFL_ERROR]].


gflNegative, gflContrast, gflGamma, gflLogCorrection, gflNormalize, gflEqualize, gflEqualizeOnLuminance, gflBalance, gflAdjust, gflAdjustHLS


gflContrast
== gflContrast ==


The gflContrast function increase or decrease the contrast of a picture.  
The gflContrast function increase or decrease the contrast of a picture.  


GFL_ERROR <b>gflContrast</b>(
  GFL_BITMAP* src, 
  GFL_BITMAP** dst, 
  GFL_INT32 contrast
);


GFL_ERROR gflContrast(
'''Parameters'''
  GFL_BITMAP * src, 
  GFL_BITMAP ** dst, 
  GFL_INT32 contrast
);
 
Parameters  
 
src
Pointer to a GFL_BITMAP structure.
dst
Address of a pointer to a GFL_BITMAP structure.
NULL if on the same instance.
contrast
An integer between -127 and 127.
 
Return value


The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.  
:src
::Pointer to a GFL_BITMAP structure.
:dst
::Address of a pointer to a GFL_BITMAP structure. NULL if on the same instance.
:contrast
::An integer between -127 and 127.  


'''Return value'''
:The function returns GFL_NO_ERROR if it is successful or a value of [[Error|GFL_ERROR]].


See also


gflNegative, gflBrigthness, gflGamma, gflLogCorrection, gflNormalize, gflEqualize, gflEqualizeOnLuminance, gflBalance, gflAdjust, gflAdjustHLS
== gflGamma ==
 
gflGamma


The gflGamma function increase or decrease the gamma of a picture.  
The gflGamma function increase or decrease the gamma of a picture.  


GFL_ERROR <b>gflGamma</b>(
  GFL_BITMAP* src, 
  GFL_BITMAP** dst, 
  double gamma
);


GFL_ERROR gflGamma(
'''Parameters'''
  GFL_BITMAP * src, 
  GFL_BITMAP ** dst, 
  double gamma
);


Parameters
:src
::Pointer to a GFL_BITMAP structure.
:dst
::Address of a pointer to a GFL_BITMAP structure. NULL if on the same instance.
:gamma
::A number between 0.01 and 5.


src
'''Return value'''
Pointer to a GFL_BITMAP structure.
:The function returns GFL_NO_ERROR if it is successful or a value of [[Error|GFL_ERROR]].  
dst
Address of a pointer to a GFL_BITMAP structure.
NULL if on the same instance.
gamma
A number between 0.01 and 5.  


Return value
== gflAdjust ==
 
The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.
 
 
 
See also
 
gflNegative, gflBrigthness, gflContrast, gflLogCorrection, gflNormalize, gflEqualize, gflEqualizeOnLuminance, gflBalance, gflAdjust, gflAdjustHLS
 
 
gflAdjust


The gflAdjust function allows to adjust brightness, contrast & gamma of a picture.  
The gflAdjust function allows to adjust brightness, contrast & gamma of a picture.  


GFL_ERROR <b>gflAdjust</b>(
  GFL_BITMAP* src, 
  GFL_BITMAP** dst, 
  GFL_INT32 brightness, 
  GFL_INT32 contrast, 
  double gamma
);


GFL_ERROR gflAdjust(
'''Parameters'''
  GFL_BITMAP * src, 
  GFL_BITMAP ** dst, 
  GFL_INT32 brightness, 
  GFL_INT32 contrast, 
  double gamma
);


Parameters
:src
::Pointer to a GFL_BITMAP structure.
:dst
::Address of a pointer to a GFL_BITMAP structure. NULL if on the same instance.
:brightness
::An integer between -255 and 255.
:contrast
::An integer between -127 and 127.
:gamma
::A number between 0.01 and 5.


src
'''Return value'''
Pointer to a GFL_BITMAP structure.
:The function returns GFL_NO_ERROR if it is successful or a value of [[Error|GFL_ERROR]].  
dst
Address of a pointer to a GFL_BITMAP structure.
NULL if on the same instance.
brightness
An integer between -255 and 255.
contrast
An integer between -127 and 127.
gamma
A number between 0.01 and 5.  


Return value


The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.
== gflAdjustHLS ==
 
 
See also
 
gflNegative, gflBrigthness, gflContrast, gflGamma, gflLogCorrection, gflNormalize, gflEqualize, gflEqualizeOnLuminance, gflAdjustHLS,
 
gflAdjustHLS


The gflAdjustHLS function allows to adjust the hue, lightness & saturation of a picture.  
The gflAdjustHLS function allows to adjust the hue, lightness & saturation of a picture.  


GFL_ERROR <b>gflAdjustHLS</b>(
  GFL_BITMAP* src, 
  GFL_BITMAP** dst, 
  GFL_INT32 h_increment, 
  GFL_INT32 l_increment, 
  GFL_INT32 s_increment
);


GFL_ERROR gflAdjustHLS(
'''Parameters'''
  GFL_BITMAP * src, 
  GFL_BITMAP ** dst, 
  GFL_INT32 h_increment, 
  GFL_INT32 l_increment, 
  GFL_INT32 s_increment
);
 
Parameters  
 
src
Pointer to a GFL_BITMAP structure.
dst
Address of a pointer to a GFL_BITMAP structure.
NULL if on the same instance.
h_increment
An interger between -100 and 100 to add to the hue value.
l_increment
An interger between -100 and 100 to add to the lightness value.
s_increment
An interger between -100 and 100 to add to the saturation value.


Return value  
:src
::Pointer to a GFL_BITMAP structure.
:dst
::Address of a pointer to a GFL_BITMAP structure. NULL if on the same instance.
:h_increment
::An interger between -100 and 100 to add to the hue value.
:l_increment
::An interger between -100 and 100 to add to the lightness value.
:s_increment
::An interger between -100 and 100 to add to the saturation value.


The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.  
'''Return value'''
:The function returns GFL_NO_ERROR if it is successful or a value of [[Error|GFL_ERROR]].  




See also
== gflNegative ==
 
gflNegative, gflBrigthness, gflContrast, gflGamma, gflLogCorrection, gflNormalize, gflEqualize, gflEqualizeOnLuminance, gflAdjust,
 
gflNegative


The gflNegative function applies the negative of a picture.  
The gflNegative function applies the negative of a picture.  


GFL_ERROR <b>gflNegative</b>(
  GFL_BITMAP* src, 
  GFL_BITMAP* dst
);


GFL_ERROR gflNegative(
'''Parameters'''
  GFL_BITMAP * src, 
  GFL_BITMAP * dst
);
 
Parameters  
 
src
Pointer to a GFL_BITMAP structure.
dst
Address of a pointer to a GFL_BITMAP structure.
NULL if on the same instance.
 
Return value
 
The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.
 


:src
::Pointer to a GFL_BITMAP structure.
:dst
::Address of a pointer to a GFL_BITMAP structure. NULL if on the same instance.


See also
'''Return value'''
:The function returns GFL_NO_ERROR if it is successful or a value of [[Error|GFL_ERROR]].


gflBrigthness, gflContrast, gflGamma, gflLogCorrection, gflNormalize, gflEqualize, gflEqualizeOnLuminance, gflBalance, gflAdjust, gflAdjustHLS


gflLogCorrection
== gflLogCorrection ==


The gflLogCorrection function applies a logarithmic correction on a picture.  
The gflLogCorrection function applies a logarithmic correction on a picture.  


GFL_ERROR <b>gflLogCorrection</b>(
  GFL_BITMAP* src, 
  GFL_BITMAP** dst
);


GFL_ERROR gflLogCorrection(
'''Parameters'''
  GFL_BITMAP * src, 
  GFL_BITMAP ** dst
);
 
Parameters  
 
src
Pointer to a GFL_BITMAP structure.
dst
Address of a pointer to a GFL_BITMAP structure.
NULL if on the same instance.


Return value
:src
::Pointer to a GFL_BITMAP structure.
:dst
::Address of a pointer to a GFL_BITMAP structure. NULL if on the same instance.


The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.  
'''Return value'''
:The function returns GFL_NO_ERROR if it is successful or a value of [[Error|GFL_ERROR]].  




 
== gflNormalize ==
See also
 
gflNegative, gflBrigthness, gflContrast, gflGamma, gflNormalize, gflEqualize, gflEqualizeOnLuminance, gflBalance, gflAdjust, gflAdjustHLS
 
gflNormalize


The gflNormalize function applies a normalisation of the pixels values.  
The gflNormalize function applies a normalisation of the pixels values.  


GFL_ERROR gflNormalize(
GFL_ERROR gflNormalize(
   GFL_BITMAP * src,   
   GFL_BITMAP* src,   
   GFL_BITMAP ** dst
   GFL_BITMAP** dst
);
);


Parameters  
'''Parameters'''
 
src
Pointer to a GFL_BITMAP structure.
dst
Address of a pointer to a GFL_BITMAP structure.
NULL if on the same instance.
 
Return value
 
The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.
 


:src
::Pointer to a GFL_BITMAP structure.
:dst
::Address of a pointer to a GFL_BITMAP structure. NULL if on the same instance.


See also
'''Return value'''
:The function returns GFL_NO_ERROR if it is successful or a value of [[Error|GFL_ERROR]].


gflNegative, gflBrigthness, gflContrast, gflGamma, gflLogCorrection, gflEqualize, gflEqualizeOnLuminance, gflBalance, gflAdjust, gflAdjustHLS


gflEqualize
== gflEqualize ==


The gflEqualize function applies an equalization of the pixels.  
The gflEqualize function applies an equalization of the pixels.  


GFL_ERROR <b>gflEqualize</b>(
  GFL_BITMAP* src, 
  GFL_BITMAP** dst
);


GFL_ERROR gflEqualize(
'''Parameters'''
  GFL_BITMAP * src, 
  GFL_BITMAP ** dst
);
 
Parameters  
 
src
Pointer to a GFL_BITMAP structure.
dst
Address of a pointer to a GFL_BITMAP structure.
NULL if on the same instance.
 
Return value
 
The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.
 


:src
::Pointer to a GFL_BITMAP structure.
:dst
::Address of a pointer to a GFL_BITMAP structure. NULL if on the same instance.


See also
'''Return value'''
:The function returns GFL_NO_ERROR if it is successful or a value of [[Error|GFL_ERROR]].


gflNegative, gflBrigthness, gflContrast, gflGamma, gflLogCorrection, gflNormalize, gflEqualizeOnLuminance, gflBalance, gflAdjust, gflAdjustHLS


gflEqualizeOnLuminance
== gflEqualizeOnLuminance ==


The gflEqualizeOnLuminance function applies an equalization of the pixels (based on the luminance).  
The gflEqualizeOnLuminance function applies an equalization of the pixels (based on the luminance).  


GFL_ERROR <b>gflEqualizeOnLuminance</b>(
  GFL_BITMAP * src, 
  GFL_BITMAP ** dst
);


GFL_ERROR gflEqualizeOnLuminance(
'''Parameters'''
  GFL_BITMAP * src, 
  GFL_BITMAP ** dst
);
 
Parameters  
 
src
Pointer to a GFL_BITMAP structure.
dst
Address of a pointer to a GFL_BITMAP structure.
NULL if on the same instance.


Return value
:src
::Pointer to a GFL_BITMAP structure.
:dst
::Address of a pointer to a GFL_BITMAP structure. NULL if on the same instance.


The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.  
'''Return value'''
:The function returns GFL_NO_ERROR if it is successful or a value of [[Error|GFL_ERROR]].  




 
== gflBalance ==
See also
 
gflNegative, gflBrigthness, gflContrast, gflGamma, gflLogCorrection, gflNormalize, gflEqualize, gflBalance, gflAdjust, gflAdjustHLS
 
gflBalance


The gflBalance function applies a color balance of a picture.  
The gflBalance function applies a color balance of a picture.  


GFL_ERROR <b>gflBalance</b>(
  GFL_BITMAP* src, 
  GFL_BITMAP** dst, 
  const GFL_COLOR* color
);


GFL_ERROR gflBalance(
'''Parameters'''
  GFL_BITMAP * src, 
  GFL_BITMAP ** dst, 
  const GFL_COLOR * color
);
 
Parameters  
 
src
Pointer to a GFL_BITMAP structure.
dst
Address of a pointer to a GFL_BITMAP structure.
NULL if on the same instance.
color
Pointer to a GFL_COLOR structure.


Return value
:src
::Pointer to a GFL_BITMAP structure.
:dst
::Address of a pointer to a GFL_BITMAP structure. NULL if on the same instance.
:color
::Pointer to a GFL_COLOR structure.


The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.  
'''Return value'''
:The function returns GFL_NO_ERROR if it is successful or a value of [[Error|GFL_ERROR]].  




See also
== gflSwapColors ==
 
gflNegative, gflBrigthness, gflContrast, gflGamma, gflLogCorrection, gflNormalize, gflEqualize gflEqualizeOnLuminance, gflBalance, gflAdjust, gflAdjustHLS
 
gflSwapColors


The gflSwapColors function allows to swap component.  
The gflSwapColors function allows to swap component.  


GFL_ERROR <b>gflSwapColors</b>(
  GFL_BITMAP* src, 
  GFL_BITMAP** dst, 
  GFL_SWAPCOLORS_MODE mode
);


GFL_ERROR gflSwapColors(
'''Parameters'''
  GFL_BITMAP * src, 
  GFL_BITMAP ** dst, 
  GFL_SWAPCOLORS_MODE mode
);


Parameters
:src
::Pointer to a GFL_BITMAP structure.
:dst
::Address of a pointer to a GFL_BITMAP structure. NULL if on the same instance.
:mode
::{|
|GFL_SWAPCOLORS_RBG || 0
|-
|GFL_SWAPCOLORS_BGR || 1
|-
|GFL_SWAPCOLORS_BRG || 2
|-
|GFL_SWAPCOLORS_GRB || 3
|-
|GFL_SWAPCOLORS_GBR || 4
|}


src
'''Return value'''
Pointer to a GFL_BITMAP structure.
:The function returns GFL_NO_ERROR if it is successful or a value of [[Error|GFL_ERROR]].  
dst
Address of a pointer to a GFL_BITMAP structure.  
NULL if on the same instance.
mode
GFL_SWAPCOLORS_RBG 0
GFL_SWAPCOLORS_BGR 1
GFL_SWAPCOLORS_BRG 2
GFL_SWAPCOLORS_GRB 3
GFL_SWAPCOLORS_GBR 4




Return value
== gflSepia ==
 
The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.
 
 
gflSepia


The gflSepia function converts a picture in sepia.  
The gflSepia function converts a picture in sepia.  


GFL_ERROR <b>gflSepia</b>(
  GFL_BITMAP * src, 
  GFL_BITMAP ** dst, 
  GFL_INT32 percent
);


GFL_ERROR gflSepia(
'''Parameters'''
  GFL_BITMAP * src, 
  GFL_BITMAP ** dst, 
  GFL_INT32 percent
);


Parameters
:src
::Pointer to a GFL_BITMAP structure.
:dst
::Address of a pointer to a GFL_BITMAP structure. NULL if on the same instance.
:percent
::An integer between 0 and 100.
::0 => greyscale, 100 => maximum sepia


src
'''Return value'''
Pointer to a GFL_BITMAP structure.
:The function returns GFL_NO_ERROR if it is successful or a value of [[Error|GFL_ERROR]].  
dst
Address of a pointer to a GFL_BITMAP structure.  
NULL if on the same instance.
percent
An integer between 0 and 100.
0 => greyscale, 100 => maximum sepia


Return value


The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.
== gflSepiaEx ==
 
 
See also
 
gflSepiaExt
 
gflSepiaEx


The gflSepiaEx function converts a picture in sepia.  
The gflSepiaEx function converts a picture in sepia.  


GFL_ERROR <b>gflSepiaEx</b>(
  GFL_BITMAP* src, 
  GFL_BITMAP** dst, 
  GFL_INT32 percent, 
  const GFL_COLOR* color
);


GFL_ERROR gflSepiaEx(
'''Parameters'''
  GFL_BITMAP * src, 
  GFL_BITMAP ** dst, 
  GFL_INT32 percent, 
  const GFL_COLOR * color
);


Parameters
:src
::Pointer to a GFL_BITMAP structure.
:dst
::Address of a pointer to a GFL_BITMAP structure. NULL if on the same instance.
:percent
::An integer between 0 and 100.
::0 => greyscale, 100 => maximum sepia
:color
::Pointer to a GFL_COLOR structure.
::This color is used as a reference.


src
'''Return value'''
Pointer to a GFL_BITMAP structure.
:The function returns GFL_NO_ERROR if it is successful or a value of [[Error|GFL_ERROR]].  
dst
Address of a pointer to a GFL_BITMAP structure.
NULL if on the same instance.
percent
An integer between 0 and 100.
0 => greyscale, 100 => maximum sepia
color
Pointer to a GFL_COLOR structure.
This color is used as a reference.  


Return value


The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.
== gflAutomaticLevels ==
 
 
See also
 
gflSepia
 
gflAutomaticLevels


The gflAutomaticLevels function applies an automatic equalisation of levels.  
The gflAutomaticLevels function applies an automatic equalisation of levels.  


GFL_ERROR <b>gflAutomaticLevels</b>(
  GFL_BITMAP* src, 
  GFL_BITMAP** dst
);


GFL_ERROR gflAutomaticLevels(
'''Parameters'''
  GFL_BITMAP * src, 
  GFL_BITMAP ** dst
);
 
Parameters  
 
src
Pointer to a GFL_BITMAP structure.
dst
Address of a pointer to a GFL_BITMAP structure.
NULL if on the same instance.
 
Return value
 
The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.
 


:src
::Pointer to a GFL_BITMAP structure.
:dst
::Address of a pointer to a GFL_BITMAP structure. NULL if on the same instance.


See also
'''Return value'''
:The function returns GFL_NO_ERROR if it is successful or a value of [[Error|GFL_ERROR]].


gflNegative, gflBrigthness, gflContrast, gflGamma, gflLogCorrection, gflNormalize, gflEqualizeOnLuminance, gflBalance, gflAdjust, gflAdjustHLS, gflAutomaticContrast


gflAutomaticContrast
== gflAutomaticContrast ==


The gflAutomaticContrast function adjusts the contrast of picture.  
The gflAutomaticContrast function adjusts the contrast of picture.  


GFL_ERROR <b>gflAutomaticContrast</b>(
  GFL_BITMAP* src, 
  GFL_BITMAP** dst
);


GFL_ERROR gflAutomaticContrast(
'''Parameters'''
  GFL_BITMAP * src, 
  GFL_BITMAP ** dst
);
 
Parameters  
 
src
Pointer to a GFL_BITMAP structure.
dst
Address of a pointer to a GFL_BITMAP structure.
NULL if on the same instance.
 
Return value
 
The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.
 
 


See also
:src
::Pointer to a GFL_BITMAP structure.
:dst
::Address of a pointer to a GFL_BITMAP structure. NULL if on the same instance.


gflNegative, gflBrigthness, gflContrast, gflGamma, gflLogCorrection, gflNormalize, gflEqualizeOnLuminance, gflBalance, gflAdjust, gflAdjustHLS gflAutomaticLevels
'''Return value'''
:The function returns GFL_NO_ERROR if it is successful or a value of [[Error|GFL_ERROR]].

Revision as of 15:08, 24 September 2009

gflBrigthness

The gflBrigthness function increase or decrease the brightness of a picture. 

GFL_ERROR gflBrigthness(
  GFL_BITMAP* src,  
  GFL_BITMAP** dst,  
  GFL_INT32 brightness
);

Parameters

src
Pointer to a GFL_BITMAP structure.
dst
Address of a pointer to a GFL_BITMAP structure. NULL if on the same instance.
brightness
An integer between -255 and 255.

Return value

The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.


gflContrast

The gflContrast function increase or decrease the contrast of a picture. 

GFL_ERROR gflContrast(
  GFL_BITMAP* src,  
  GFL_BITMAP** dst,  
  GFL_INT32 contrast
);

Parameters

src
Pointer to a GFL_BITMAP structure.
dst
Address of a pointer to a GFL_BITMAP structure. NULL if on the same instance.
contrast
An integer between -127 and 127.

Return value

The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.


gflGamma

The gflGamma function increase or decrease the gamma of a picture. 

GFL_ERROR gflGamma(
  GFL_BITMAP* src,  
  GFL_BITMAP** dst,  
  double gamma
);

Parameters

src
Pointer to a GFL_BITMAP structure.
dst
Address of a pointer to a GFL_BITMAP structure. NULL if on the same instance.
gamma
A number between 0.01 and 5.

Return value

The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.

gflAdjust

The gflAdjust function allows to adjust brightness, contrast & gamma of a picture. 

GFL_ERROR gflAdjust(
  GFL_BITMAP* src,  
  GFL_BITMAP** dst,  
  GFL_INT32 brightness,  
  GFL_INT32 contrast,  
  double gamma
);

Parameters

src
Pointer to a GFL_BITMAP structure.
dst
Address of a pointer to a GFL_BITMAP structure. NULL if on the same instance.
brightness
An integer between -255 and 255.
contrast
An integer between -127 and 127.
gamma
A number between 0.01 and 5.

Return value

The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.


gflAdjustHLS

The gflAdjustHLS function allows to adjust the hue, lightness & saturation of a picture. 

GFL_ERROR gflAdjustHLS(
  GFL_BITMAP* src,  
  GFL_BITMAP** dst,  
  GFL_INT32 h_increment,  
  GFL_INT32 l_increment,  
  GFL_INT32 s_increment
);

Parameters

src
Pointer to a GFL_BITMAP structure.
dst
Address of a pointer to a GFL_BITMAP structure. NULL if on the same instance.
h_increment
An interger between -100 and 100 to add to the hue value.
l_increment
An interger between -100 and 100 to add to the lightness value.
s_increment
An interger between -100 and 100 to add to the saturation value.

Return value

The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.


gflNegative

The gflNegative function applies the negative of a picture. 

GFL_ERROR gflNegative(
  GFL_BITMAP* src,  
  GFL_BITMAP* dst
);

Parameters

src
Pointer to a GFL_BITMAP structure.
dst
Address of a pointer to a GFL_BITMAP structure. NULL if on the same instance.

Return value

The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.


gflLogCorrection

The gflLogCorrection function applies a logarithmic correction on a picture. 

GFL_ERROR gflLogCorrection(
  GFL_BITMAP* src,  
  GFL_BITMAP** dst
);

Parameters

src
Pointer to a GFL_BITMAP structure.
dst
Address of a pointer to a GFL_BITMAP structure. NULL if on the same instance.

Return value

The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.


gflNormalize

The gflNormalize function applies a normalisation of the pixels values.

GFL_ERROR gflNormalize( 

 GFL_BITMAP* src,  
 GFL_BITMAP** dst

);

Parameters

src
Pointer to a GFL_BITMAP structure.
dst
Address of a pointer to a GFL_BITMAP structure. NULL if on the same instance.

Return value

The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.


gflEqualize

The gflEqualize function applies an equalization of the pixels. 

GFL_ERROR gflEqualize(
  GFL_BITMAP* src,  
  GFL_BITMAP** dst
);

Parameters

src
Pointer to a GFL_BITMAP structure.
dst
Address of a pointer to a GFL_BITMAP structure. NULL if on the same instance.

Return value

The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.


gflEqualizeOnLuminance

The gflEqualizeOnLuminance function applies an equalization of the pixels (based on the luminance). 

GFL_ERROR gflEqualizeOnLuminance(
  GFL_BITMAP * src,  
  GFL_BITMAP ** dst
);

Parameters

src
Pointer to a GFL_BITMAP structure.
dst
Address of a pointer to a GFL_BITMAP structure. NULL if on the same instance.

Return value

The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.


gflBalance

The gflBalance function applies a color balance of a picture. 

GFL_ERROR gflBalance(
  GFL_BITMAP* src,  
  GFL_BITMAP** dst,  
  const GFL_COLOR* color
);

Parameters

src
Pointer to a GFL_BITMAP structure.
dst
Address of a pointer to a GFL_BITMAP structure. NULL if on the same instance.
color
Pointer to a GFL_COLOR structure.

Return value

The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.


gflSwapColors

The gflSwapColors function allows to swap component. 

GFL_ERROR gflSwapColors(
  GFL_BITMAP* src,  
  GFL_BITMAP** dst,  
  GFL_SWAPCOLORS_MODE mode
);

Parameters

src
Pointer to a GFL_BITMAP structure.
dst
Address of a pointer to a GFL_BITMAP structure. NULL if on the same instance.
mode
GFL_SWAPCOLORS_RBG 0
GFL_SWAPCOLORS_BGR 1
GFL_SWAPCOLORS_BRG 2
GFL_SWAPCOLORS_GRB 3
GFL_SWAPCOLORS_GBR 4

Return value

The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.


gflSepia

The gflSepia function converts a picture in sepia. 

GFL_ERROR gflSepia(
  GFL_BITMAP * src,  
  GFL_BITMAP ** dst,  
  GFL_INT32 percent
);

Parameters

src
Pointer to a GFL_BITMAP structure.
dst
Address of a pointer to a GFL_BITMAP structure. NULL if on the same instance.
percent
An integer between 0 and 100.
0 => greyscale, 100 => maximum sepia

Return value

The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.


gflSepiaEx

The gflSepiaEx function converts a picture in sepia. 

GFL_ERROR gflSepiaEx(
  GFL_BITMAP* src,  
  GFL_BITMAP** dst,  
  GFL_INT32 percent,  
  const GFL_COLOR* color
);

Parameters

src
Pointer to a GFL_BITMAP structure.
dst
Address of a pointer to a GFL_BITMAP structure. NULL if on the same instance.
percent
An integer between 0 and 100.
0 => greyscale, 100 => maximum sepia
color
Pointer to a GFL_COLOR structure.
This color is used as a reference.

Return value

The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.


gflAutomaticLevels

The gflAutomaticLevels function applies an automatic equalisation of levels. 

GFL_ERROR gflAutomaticLevels(
  GFL_BITMAP* src,  
  GFL_BITMAP** dst
);

Parameters

src
Pointer to a GFL_BITMAP structure.
dst
Address of a pointer to a GFL_BITMAP structure. NULL if on the same instance.

Return value

The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.


gflAutomaticContrast

The gflAutomaticContrast function adjusts the contrast of picture. 

GFL_ERROR gflAutomaticContrast(
  GFL_BITMAP* src,  
  GFL_BITMAP** dst
);

Parameters

src
Pointer to a GFL_BITMAP structure.
dst
Address of a pointer to a GFL_BITMAP structure. NULL if on the same instance.

Return value

The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.
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