export - functionality for writing images into files libAfterImage/export.h

       Sasha Vasko <sasha at aftercode dot net>
       libAfterImage/ExportFlags

       ASImage2file will construct filename out of dir and file components and then will call specific filter to
       write out file in requested format.

       asmerge.c: ASMerge.3

3rd Berkeley Distribution                      AfterStep v.2.2.12                                     export(3x)

       Some common flags that could be used while writing images into different file formats.

       im     - Image to write out.

       dir    - directory name to write file into (optional, could be NULL)

       file   - file name with or without directory name.

       type   - output file format. ( see ASImageFileTypes )

       params - pointer to ASImageExportParams union's  member  for  the  above  type,  with  additional  export
              parameters, such as quality, compression, etc. If NULL then all defaults will be used.

export - functionality for writing images into files libAfterImage/export.h

       - parameters for export into GIF file.

       - union of structures holding parameters for export into different file formats.

       - parameters for export into JPEG file.

       - parameters for export into PNG file.

       - parameters for export into TIFF file.

       - Image output into different file formats.

       - save image as grayscale.  EXPORT_ALPHA - save alpha channel if format permits EXPORT_APPEND - if format
       allows multiple images - image will be appended

       Some formats support compression, others support lossy compression, yet others allows you to limit number
       of colors and colordepth.  Each specific filter will try to interpret those parameters in its own way.

       True on success. False - failure.

       ASImageFileTypes

           typedef union ASImageExportParams {
               ASImageFileTypes   type;
               ASXpmExportParams  xpm;
               ASPngExportParams  png;
               ASJpegExportParams jpeg;
               ASGifExportParams  gif;
               ASTiffExportParams tiff; }ASImageExportParams;

       libAfterImage/export/ASImage2file()

       Bool ASImage2file( ASImage *im, const char *dir, const char *file,
                     ASImageFileTypes type, ASImageExportParams *params );