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.