C++ (Cpp) png_write_destroy 예제들

예제 #1

/* free all memory used by the write */
void
png_destroy_write_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr)
{
   png_structp png_ptr = NULL;
   png_infop info_ptr = NULL;

   png_debug(1, "in png_destroy_write_struct\n");
   if (png_ptr_ptr != NULL)
      png_ptr = *png_ptr_ptr;

   if (info_ptr_ptr != NULL)
      info_ptr = *info_ptr_ptr;

   if (info_ptr != NULL)
   {
      png_destroy_struct((png_voidp)info_ptr);
      *info_ptr_ptr = (png_infop)NULL;
   }

   if (png_ptr != NULL)
   {
      png_write_destroy(png_ptr);
      png_destroy_struct((png_voidp)png_ptr);
      *png_ptr_ptr = (png_structp)NULL;
   }
}

예제 #2

파일: pngwrite.c 프로젝트: RaisingTheDerp/raisingthebar

/* free all memory used by the write */
void
png_destroy_write_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr)
{
   png_structp png_ptr = NULL;
   png_infop info_ptr = NULL;
#ifdef PNG_USER_MEM_SUPPORTED
   png_free_ptr free_fn = NULL;
#endif

   png_debug(1, "in png_destroy_write_struct\n");
   if (png_ptr_ptr != NULL)
   {
      png_ptr = *png_ptr_ptr;
#ifdef PNG_USER_MEM_SUPPORTED
      free_fn = png_ptr->free_fn;
#endif
   }

   if (info_ptr_ptr != NULL)
      info_ptr = *info_ptr_ptr;

   if (info_ptr != NULL)
   {
#ifdef PNG_WRITE_tEXt_SUPPORTED
      png_free(png_ptr, info_ptr->text);
#endif
#if defined(PNG_READ_pCAL_SUPPORTED)
      png_free(png_ptr, info_ptr->pcal_purpose);
      png_free(png_ptr, info_ptr->pcal_units);
      if (info_ptr->pcal_params != NULL)
      {
         int i;
         for (i = 0; i < (int)info_ptr->pcal_nparams; i++)
         {
            png_free(png_ptr, info_ptr->pcal_params[i]);
         }
         png_free(png_ptr, info_ptr->pcal_params);
      }
#endif
#ifdef PNG_USER_MEM_SUPPORTED
      png_destroy_struct_2((png_voidp)info_ptr, free_fn);
#else
      png_destroy_struct((png_voidp)info_ptr);
#endif
      *info_ptr_ptr = (png_infop)NULL;
   }

   if (png_ptr != NULL)
   {
      png_write_destroy(png_ptr);
#ifdef PNG_USER_MEM_SUPPORTED
      png_destroy_struct_2((png_voidp)png_ptr, free_fn);
#else
      png_destroy_struct((png_voidp)png_ptr);
#endif
      *png_ptr_ptr = (png_structp)NULL;
   }
}