only scan the content databases that support the file's extension

core_info.c

@@ -688,6 +688,52 @@ size_t core_info_list_num_info_files(core_info_list_t *core_info_list)
    return num;
 }
 
+bool core_info_unsupported_content_path(const char *path)
+{
+   size_t i;
+
+   if (!core_info_curr_list)
+      return false;
+
+   for (i = 0; i < core_info_curr_list->count; i++)
+   {
+      const core_info_t *info = &core_info_curr_list->list[i];
+
+      if (string_list_find_elem(info->supported_extensions_list, path_get_extension(path)))
+         return false;
+   }
+
+   return true;
+}
+
+bool core_info_database_supports_content_path(const char *database_path, const char *path)
+{
+   size_t i;
+   char *database = NULL;
+
+   if (!core_info_curr_list)
+      return false;
+
+   database = strdup(path_basename(database_path));
+
+   path_remove_extension(database);
+
+   for (i = 0; i < core_info_curr_list->count; i++)
+   {
+      const core_info_t *info = &core_info_curr_list->list[i];
+
+      if (string_list_find_elem(info->supported_extensions_list, path_get_extension(path)))
+         if (string_list_find_elem(info->databases_list, database))
+         {
+            free(database);
+            return true;
+         }
+   }
+
+   free(database);
+   return false;
+}
+
 bool core_info_list_get_display_name(core_info_list_t *core_info_list,
       const char *path, char *s, size_t len)
 {

core_info.h

@@ -52,7 +52,7 @@ typedef struct
    char *notes;
    struct string_list *categories_list;
    struct string_list *databases_list;
-   struct string_list *note_list;   
+   struct string_list *note_list;
    struct string_list *supported_extensions_list;
    struct string_list *authors_list;
    struct string_list *permissions_list;
@@ -119,6 +119,10 @@ bool core_info_find(core_info_ctx_find_t *info, const char *name);
 
 bool core_info_load(core_info_ctx_find_t *info);
 
+bool core_info_database_supports_content_path(const char *database_path, const char *path);
+
+bool core_info_unsupported_content_path(const char *path);
+
 RETRO_END_DECLS
 
 #endif /* CORE_INFO_H_ */

tasks/task_database.c

@@ -23,7 +23,6 @@
 #include <queues/message_queue.h>
 #include <encodings/crc32.h>
 #include <streams/file_stream.h>
-
 #include "tasks_internal.h"
 
 #include "../database_info.h"
@@ -35,6 +34,7 @@
 #include "../playlist.h"
 #include "../runloop.h"
 #include "../verbosity.h"
+#include "../core_info.h"
 
 #ifndef COLLECTION_SIZE
 #define COLLECTION_SIZE                99999
@@ -206,6 +206,7 @@ static int database_info_list_iterate_new(database_state_handle_t *db_state,
       const char *query)
 {
    const char *new_database = database_info_get_current_name(db_state);
+
 #if 0
    RARCH_LOG("Check database [%d/%d] : %s\n", (unsigned)db_state->list_index,
          (unsigned)db_state->list->size, new_database);
@@ -311,6 +312,7 @@ static int database_info_list_iterate_next(
 static int task_database_iterate_crc_lookup(
       database_state_handle_t *db_state,
       database_info_handle_t *db,
+      const char *name,
       const char *archive_entry)
 {
 
@@ -321,6 +323,11 @@ static int task_database_iterate_crc_lookup(
    if (db_state->entry_index == 0)
    {
       char query[50] = {0};
+
+      if (!core_info_database_supports_content_path(db_state->list->elems[db_state->list_index].data, name) &&
+          !core_info_unsupported_content_path(name))
+         return database_info_list_iterate_next(db_state);
+
       snprintf(query, sizeof(query),
             "{crc:or(b\"%08X\",b\"%08X\")}",
             swap_if_big32(db_state->crc), swap_if_big32(db_state->archive_crc));
@@ -362,7 +369,10 @@ static int task_database_iterate_crc_lookup(
       return 1;
 
    database_info_list_free(db_state->info);
-   free(db_state->info);
+
+   if (db_state->info)
+      free(db_state->info);
+
    return 0;
 }
 
@@ -373,7 +383,7 @@ static int task_database_iterate_playlist_archive(
 #ifdef HAVE_COMPRESSION
    if (db_state->crc != 0)
       return task_database_iterate_crc_lookup(
-            db_state, db, db_state->archive_name);
+            db_state, db, name, db_state->archive_name);
 
    db_state->crc = file_archive_get_file_crc32(name);
 #endif
@@ -500,7 +510,7 @@ static int task_database_iterate(database_state_handle_t *db_state,
       case DATABASE_TYPE_SERIAL_LOOKUP:
          return task_database_iterate_serial_lookup(db_state, db, name);
       case DATABASE_TYPE_CRC_LOOKUP:
-         return task_database_iterate_crc_lookup(db_state, db, NULL);
+         return task_database_iterate_crc_lookup(db_state, db, name, NULL);
       case DATABASE_TYPE_NONE:
       default:
          break;
@@ -561,7 +571,7 @@ static void task_database_handler(retro_task_t *task)
          task_database_iterate_start(dbinfo, name);
          break;
       case DATABASE_STATUS_ITERATE:
-         if (dbstate && task_database_iterate(dbstate, dbinfo) == 0)
+         if (task_database_iterate(dbstate, dbinfo) == 0)
          {
             dbinfo->status = DATABASE_STATUS_ITERATE_NEXT;
             dbinfo->type   = DATABASE_TYPE_ITERATE;