examples/liquidrescale.h

   1 /* LiquidRescaling Library DEMO program
   2  * Copyright (C) 2007-2009 Carlo Baldassi (the "Author") <carlobaldassi@gmail.com>.
   3  * All Rights Reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; version 3 dated June, 2007.
   8
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, see <http://www.gnu.org/licenses/>
  16  */
  17
  18 #ifndef __LIQUIDRESCALE_H__
  19 #define __LIQUIDRESCALE_H__
  20
  21 /*** SIGNAL HANDLING MACROS ***/
  22
  23 #define RBS (1000)
  24 #define CHECK_OR_N(expr, mess) G_STMT_START{ \
  25   if (!(expr)) { \
  26     cerr << "Error: " << mess << endl; \
  27     return NULL; \
  28   } \
  29 }G_STMT_END
  30
  31 #define TRAP_N(expr) G_STMT_START{ \
  32   if ((expr) == NULL) { \
  33     cerr << "Error: not enough memory, aborting" << endl; \
  34     exit(1); \
  35   } \
  36 }G_STMT_END
  37
  38 #define TRAP(expr) G_STMT_START{ \
  39   switch (expr) \
  40     { \
  41       case LQR_ERROR: \
  42         cerr << "Fatal error, aborting." << endl; \
  43         exit (1); \
  44         break; \
  45       case LQR_NOMEM: \
  46         cerr << "Not enough memory, aborting." << endl; \
  47         exit (1); \
  48         break; \
  49       case LQR_USRCANCEL: \
  50         cerr << "Cancelled by user, aborting." << endl; \
  51         exit (1); \
  52         break; \
  53       default: \
  54         break; \
  55     } \
  56 }G_STMT_END
  57
  58 /*** PARSE COMMAND LINE ***/
  59 LqrRetVal parse_command_line(int argc, char **argv);
  60 void help(char *command);
  61
  62 /*** RGB FILE I/O ***/
  63 guchar *rgb_buffer_from_image(pngwriter *png);
  64 LqrRetVal write_carver_to_image(LqrCarver *r, pngwriter *png);
  65
  66 /*** VMAP FILES I/O ***/
  67 LqrRetVal save_vmap_to_file(LqrVMap *vmap, gchar *name);
  68 LqrVMap *load_vmap_from_file(gchar *name);
  69
  70 /*** ENERGY FUNCTIONS ***/
  71 gfloat sobelx(gint x, gint y, gint w, gint h, LqrReadingWindow *rw, gpointer extra_data);
  72 gfloat sobel(gint x, gint y, gint w, gint h, LqrReadingWindow *rw, gpointer extra_data);
  73 LqrRetVal set_energy(LqrCarver *carver, gchar *energy_function);
  74 LqrRetVal write_energy(LqrCarver *carver, gchar *energy_outfile, gint orientation);
  75
  76 /*** PROGRESS REPORT FUNCTIONS ***/
  77 LqrRetVal my_progress_init(const gchar *message);
  78 LqrRetVal my_progress_update(gdouble percentage);
  79 LqrRetVal my_progress_end(const gchar *message);
  80 void init_progress(LqrProgress * progress);
  81
  82 /*** EXTRA ***/
  83 void info_msg(const gchar *msg, const gchar *name);
  84 gpointer cancel_thread(gpointer data);
  85 void cancel_handler(int signum);
  86
  87 #endif /* __LIQUIDRESCALE_H__ */