GFL Filters

gflAverage

The gflAverage function :

GFL_ERROR gflAverage(
  GFL_BITMAP* src,  
  GFL_BITMAP** dst,  
  GFL_INT32 filter_size
);

Parameters

src

Pointer to a GFL_BITMAP structure.

dst

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

filter_size

To do.

Return value

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

gflSoften

The gflSoften function :

GFL_ERROR gflSoften(
  GFL_BITMAP* src,  
  GFL_BITMAP** dst,  
  GFL_INT32 percentage
);

Parameters

src

Pointer to a GFL_BITMAP structure.

dst

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

percentage

To do.

Return value

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

gflBlur

The gflBlur function :

GFL_ERROR gflBlur(
  GFL_BITMAP* src,  
  GFL_BITMAP** dst,  
  GFL_INT32 percentage
);

Parameters

src

Pointer to a GFL_BITMAP structure.

dst

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

percentage

To do.

Return value

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

gflGaussianBlur

The gflGaussianBlur function :

GFL_ERROR gflGaussianBlur(
  GFL_BITMAP* src,  
  GFL_BITMAP** dst,  
  GFL_INT32 filter_size
);

Parameters

src

Pointer to a GFL_BITMAP structure.

dst

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

filter_size

To do.

Return value

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

gflMaximum

The gflMaximum function :

GFL_ERROR gflMaximum(
  GFL_BITMAP* src,  
  GFL_BITMAP** dst,  
  GFL_INT32 filter_size
);

Parameters

src

Pointer to a GFL_BITMAP structure.

dst

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

filter_size

To do.

Return value

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

gflMinimum

The gflMinimum function :

GFL_ERROR gflMinimum(
  GFL_BITMAP* src,  
  GFL_BITMAP** dst,  
  GFL_INT32 filter_size
);

Parameters

src

Pointer to a GFL_BITMAP structure.

dst

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

filter_size

To do.

Return value

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

gflMedianBox

The gflMedianBox function :

GFL_ERROR gflMedianBox(
  GFL_BITMAP* src,  
  GFL_BITMAP** dst,  
  GFL_INT32 filter_size
);

Parameters

src

Pointer to a GFL_BITMAP structure.

dst

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

filter_size

To do.

Return value

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

gflMedianCross

The gflMedianCross function :

GFL_ERROR gflMedianCross(
  GFL_BITMAP* src,  
  GFL_BITMAP** dst,  
  GFL_INT32 filter_size
);

Parameters

src

Pointer to a GFL_BITMAP structure.

dst

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

filter_size

To do.

Return value

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

gflSharpen

The gflSharpen function :

GFL_ERROR gflSharpen(
  GFL_BITMAP* src,  
  GFL_BITMAP** dst,  
  GFL_INT32 percentage
);

Parameters

src

Pointer to a GFL_BITMAP structure.

dst

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

percentage

To do.

Return value

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

gflConvolve

The gflConvolve function applies a convolution matrix on a picture.

GFL_ERROR gflConvolve(
  GFL_BITMAP* src,  
  GFL_BITMAP** dst,  
  const GFL_FILTER* filter
);

Parameters

src

Pointer to a GFL_BITMAP structure.

dst

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

filter

Pointer to a GFL_FILTER structure.

Return value

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