/* Image file formats. */
/* Last edited on 2017-01-04 23:36:29 by stolfilocal */

#ifndef dsm_image_format_H
#define dsm_image_format_H

#define _GNU_SOURCE

#include <argparser.h>

/* IMAGE FILE FORMATS */

typedef enum
  { dsm_image_format_PNG,  /* PNG (Portable Network Graphics) format. */
    dsm_image_format_PNM,  /* PNM (Portable AnyMap) format; includes PBM, PGM, PPM. */
    dsm_image_format_JPG   /* JPEG format. */
  } dsm_image_format_t;
  /* Codes for different image file formats. */

dsm_image_format_t dsm_image_format_arg_parse(argparser_t *pp, const char *keyword);
  /* Looks for a command line argument equal to {keyword} and parses the next
    argument as a file format spec, as described by {dsm_image_format_arg_INFO} below. */
  
#define dsm_image_format_arg_INFO \
  "Allowed argument values" \
  " are \"pnm\" (meaning the classic Portable" \
  " Bitmap format), \"jpg\" or \"jpeg\" (Joint Photographic Experts Group" \
  " format), or \"png\" (Portable Network Graphics format); or" \
  " their uppercase versions.  The \"pnm\" tag allows any of the" \
  " formats PBM (bilevel), PGM (grayscale), and PPM (RGB color).  The" \
  " tags \"pbm\", \"ppm\", and \"pgm\", in upper or lower case, are" \
  " also accepted as equivalent to \"pnm\", and each of them" \
  " specifies 'any of the three formats'."

#endif