View source for GFL Colors

== gflBrigthness ==

The gflBrigthness function increases or decreases the brightness of a picture. 

 GFL_ERROR <b>gflBrigthness</b>(
   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 [[Error|GFL_ERROR]].

== gflContrast ==

The gflContrast function increases or decreases the contrast of a picture. 

 GFL_ERROR <b>gflContrast</b>(
   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 [[Error|GFL_ERROR]].

== gflGamma ==

The gflGamma function increases or decreases the gamma of a picture. 

 GFL_ERROR <b>gflGamma</b>(
   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 [[Error|GFL_ERROR]].

== gflAdjust ==

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
 );

'''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 [[Error|GFL_ERROR]]. 


== gflAdjustHLS ==

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
 );

'''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 [[Error|GFL_ERROR]]. 


== gflNegative ==

The gflNegative function applies the negative of a picture. 

 GFL_ERROR <b>gflNegative</b>(
   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 [[Error|GFL_ERROR]].

== gflLogCorrection ==

The gflLogCorrection function applies a logarithmic correction on a picture. 

 GFL_ERROR <b>gflLogCorrection</b>(
   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 [[Error|GFL_ERROR]]. 


== gflNormalize ==

The gflNormalize function applies a normalisation of the pixels values. 

 GFL_ERROR <b>gflNormalize</b>(
  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 [[Error|GFL_ERROR]].

== gflEqualize ==

The gflEqualize function applies an equalization of the pixels. 

 GFL_ERROR <b>gflEqualize</b>(
   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 [[Error|GFL_ERROR]]. 


== gflEqualizeOnLuminance ==

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

 GFL_ERROR <b>gflEqualizeOnLuminance</b>(
   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 [[Error|GFL_ERROR]].

== gflBalance ==

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
 );

'''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 [[Error|GFL_ERROR]]. 


== gflSwapColors ==

The gflSwapColors function allows to swap component. 

 GFL_ERROR <b>gflSwapColors</b>(
   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 [[Error|GFL_ERROR]]. 


== gflSepia ==

The gflSepia function converts a picture in sepia. 

 GFL_ERROR <b>gflSepia</b>(
   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 [[Error|GFL_ERROR]].

== gflSepiaEx ==

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
 );

'''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 [[Error|GFL_ERROR]]. 


== gflAutomaticLevels ==

The gflAutomaticLevels function applies an automatic equalisation of levels. 

 GFL_ERROR <b>gflAutomaticLevels</b>(
   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 [[Error|GFL_ERROR]]. 


== gflAutomaticContrast ==

The gflAutomaticContrast function adjusts the contrast of picture. 

 GFL_ERROR <b>gflAutomaticContrast</b>(
   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 [[Error|GFL_ERROR]].

[[Category: GFLSDK Reference Manual]]