Load/save atari state from RetroArch

Retroarch states

libretro/libretro-core.c

@@ -48,6 +48,8 @@ extern void texture_uninit(void);
 extern void Emu_init();
 extern void Emu_uninit();
 extern void input_gui(void);
+extern int StateSav_SaveAtariStateMem(char** data, size_t* size);
+extern int StateSav_ReadAtariStateMem(const char* data, size_t size);
 
 const char *retro_save_directory;
 const char *retro_system_directory;
@@ -736,17 +738,38 @@ bool retro_load_game_special(unsigned type, const struct retro_game_info *info,
 
 size_t retro_serialize_size(void)
 {
-   return 0;
+	char* buf = NULL;
+	size_t size = 0;
+	bool ret = StateSav_SaveAtariStateMem(&buf, &size) == TRUE;
+	free(buf);
+
+	if (!ret || size == 0)
+		return 0;
+
+	return size;
 }
 
 bool retro_serialize(void *data_, size_t size)
 {
-   return false;
+	char* buf = NULL;
+	size_t serializeSize = 0;
+	bool ret = StateSav_SaveAtariStateMem(&buf, &serializeSize) == TRUE;
+	if (!ret || serializeSize != size)
+	{
+		free(buf);
+		return false;
+	}
+
+	memcpy(data_, buf, size);
+
+	free(buf);
+
+	return true;
 }
 
 bool retro_unserialize(const void *data_, size_t size)
 {
-   return false;
+   return StateSav_ReadAtariStateMem(data_, size) == TRUE;
 }
 
 void *retro_get_memory_data(unsigned id)