View source for GFL Misc.

gflGetNumberOfColorsUsed

The gflGetNumberOfColorsUsed gets the total unique colors of a picture. 


GFL_UINT32 gflGetNumberOfColorsUsed(
  GFL_BITMAP * src
);

Parameters 

src 
Pointer to a GFL_BITMAP structure. 

Return value 

Total unique colors. 



See also 

gflChangeColorDepth 


gflJpegLosslessTransform

The gflJpegLosslessTransform function applies lossless transformations on a JPEG file. 


GFL_ERROR gflJpegLosslessTransform(
  const char * filename,  
  GFL_LOSSLESS_TRANSFORM transform
);

Parameters 

filename 
Pointer to a null-terminated string that contains the filename to modify. 
transform 
Transformation 
GFL_LOSSLESS_TRANSFORM_ROTATE90 Rotate of 90 degrees 
GFL_LOSSLESS_TRANSFORM_ROTATE180 Rotate of 180 degrees 
GFL_LOSSLESS_TRANSFORM_ROTATE270 Rotate of 270 degrees 
GFL_LOSSLESS_TRANSFORM_VERTICAL_FLIP Vertical flip 
GFL_LOSSLESS_TRANSFORM_HORIZONTAL_FLIP Horizontal flip 


Return value 

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