C++ (Cpp) load_content_into_memory Examples

Example #1

File: content.c Project: jwarby/RetroArch

/**
 * load_content:
 * @special          : subsystem of content to be loaded. Can be NULL.
 * content           :
 *
 * Load content file (for libretro core).
 *
 * Returns : true if successful, otherwise false.
 **/
static bool load_content(
      struct string_list *temporary_content,
      struct retro_game_info *info,
      const struct string_list *content,
      const struct retro_subsystem_info *special,
      struct string_list* additional_path_allocs
      )
{
   unsigned i;
   retro_ctx_load_content_info_t load_info;

   if (!info || !additional_path_allocs)
      return false;

   for (i = 0; i < content->size; i++)
   {
      int         attr     = content->elems[i].attr.i;
      bool need_fullpath   = attr & 2;
      bool require_content = attr & 4;
      const char *path     = content->elems[i].data;

      if (require_content && string_is_empty(path))
      {
         RARCH_LOG("libretro core requires content, "
               "but nothing was provided.\n");
         return false;
      }

      info[i].path = NULL;

      if (*path)
         info[i].path = path;

      if (!need_fullpath && !string_is_empty(path))
      {
         if (!load_content_into_memory(&info[i], i, path))
            return false;
      }
      else
      {
         RARCH_LOG("Content loading skipped. Implementation will"
               " load it on its own.\n");

#ifdef HAVE_COMPRESSION
         if (!load_content_from_compressed_archive(
                  temporary_content,
                  &info[i], i,
                  additional_path_allocs, need_fullpath, path))
            return false;
#endif
      }
   }

   load_info.content = content;
   load_info.special = special;
   load_info.info    = info;

   if (!core_ctl(CORE_CTL_RETRO_LOAD_GAME, &load_info))
   {
      RARCH_ERR("%s.\n", msg_hash_to_str(MSG_FAILED_TO_LOAD_CONTENT));
      return false;
   }

#ifdef HAVE_CHEEVOS
   if (!special)
   {
      const void *load_data = NULL;

      cheevos_ctl(CHEEVOS_CTL_SET_CHEATS, NULL);

      if (*content->elems[0].data)
         load_data = info;
      cheevos_ctl(CHEEVOS_CTL_LOAD, (void*)load_data);
   }
#endif

   return true;
}

Example #2

/**
 * content_file_load:
 * @special          : subsystem of content to be loaded. Can be NULL.
 * content           :
 *
 * Load content file (for libretro core).
 *
 * Returns : true if successful, otherwise false.
 **/
static bool content_file_load(
      struct retro_game_info *info,
      const struct string_list *content,
      content_information_ctx_t *content_ctx,
      char **error_string,
      const struct retro_subsystem_info *special
      )
{
   unsigned i;
   retro_ctx_load_content_info_t load_info;
   char msg[1024];
   struct string_list *additional_path_allocs = string_list_new();

   msg[0] = '\0';

   if (!additional_path_allocs)
      return false;

   for (i = 0; i < content->size; i++)
   {
      int         attr     = content->elems[i].attr.i;
      const char *path     = content->elems[i].data;
      bool need_fullpath   = attr & 2;
      bool require_content = attr & 4;

      if (require_content && string_is_empty(path))
      {
         snprintf(msg, sizeof(msg),
               "%s\n",
               msg_hash_to_str(MSG_ERROR_LIBRETRO_CORE_REQUIRES_CONTENT));
         *error_string = strdup(msg);
         goto error;
      }

      info[i].path = NULL;

      if (!string_is_empty(path))
         info[i].path = path;

      if (!need_fullpath && !string_is_empty(path))
      {
         /* Load the content into memory. */

         ssize_t len = 0;

         if (!load_content_into_memory(i, path, (void**)&info[i].data, &len))
         {
            snprintf(msg, sizeof(msg),
                  "%s \"%s\".\n",
                  msg_hash_to_str(MSG_COULD_NOT_READ_CONTENT_FILE),
                  path);
            *error_string = strdup(msg);
            goto error;
         }

         info[i].size = len;
      }
      else
      {
         RARCH_LOG("%s\n",
               msg_hash_to_str(
                  MSG_CONTENT_LOADING_SKIPPED_IMPLEMENTATION_WILL_DO_IT));

#ifdef HAVE_COMPRESSION
         if (     !content_ctx->block_extract
               && need_fullpath
               && path_contains_compressed_file(path)
               && !load_content_from_compressed_archive(
                  content_ctx,
                  &info[i], i,
                  additional_path_allocs, need_fullpath, path,
                  error_string))
            goto error;
#endif
      }
   }

   load_info.content = content;
   load_info.special = special;
   load_info.info    = info;

   if (!core_load_game(&load_info))
   {
      snprintf(msg, sizeof(msg),
            "%s.\n", msg_hash_to_str(MSG_FAILED_TO_LOAD_CONTENT));
      *error_string = strdup(msg);
      goto error;
   }

#ifdef HAVE_CHEEVOS
   if (!special)
   {
      const void *load_data = NULL;
      const char *path      = content->elems[0].data;

      cheevos_set_cheats();

      if (!string_is_empty(path))
         load_data = info;
      cheevos_load(load_data);
   }
#endif

   string_list_free(additional_path_allocs);

   return true;

error:
   if (additional_path_allocs)
      string_list_free(additional_path_allocs);
   
   return false;
}