libs/loaders/GP_Container.c

   1 /*****************************************************************************
   2  * This file is part of gfxprim library.                                     *
   3  *                                                                           *
   4  * Gfxprim is free software; you can redistribute it and/or                  *
   5  * modify it under the terms of the GNU Lesser General Public                *
   6  * License as published by the Free Software Foundation; either              *
   7  * version 2.1 of the License, or (at your option) any later version.        *
   8  *                                                                           *
   9  * Gfxprim 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 GNU         *
  12  * Lesser General Public License for more details.                           *
  13  *                                                                           *
  14  * You should have received a copy of the GNU Lesser General Public          *
  15  * License along with gfxprim; if not, write to the Free Software            *
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor,                        *
  17  * Boston, MA  02110-1301  USA                                               *
  18  *                                                                           *
  19  * Copyright (C) 2009-2014 Cyril Hrubis <metan@ucw.cz>                       *
  20  *                                                                           *
  21  *****************************************************************************/
  22
  23 #include <errno.h>
  24
  25 #include "core/GP_Debug.h"
  26 #include "loaders/GP_Container.h"
  27
  28 int GP_ContainerSeek(GP_Container *self, int offset,
  29                      enum GP_ContainerWhence whence)
  30 {
  31         if (!self->ops->Seek) {
  32                 GP_DEBUG(1, "Seek not implemented in %s container",
  33                          self->ops->type);
  34                 errno = ENOSYS;
  35                 return ENOSYS;
  36         }
  37
  38         return self->ops->Seek(self, offset, whence);
  39 }
  40
  41 int GP_ContainerLoadEx(GP_Container *self, GP_Pixmap **img,
  42                        GP_DataStorage *storage, GP_ProgressCallback *callback)
  43 {
  44         if (!self->ops->LoadEx) {
  45                 GP_DEBUG(1, "Load not implemented in %s container",
  46                          self->ops->type);
  47                 errno = ENOSYS;
  48                 return ENOSYS;
  49         }
  50
  51         return self->ops->LoadEx(self, img, storage, callback);
  52 }