1/* Copyright (c) 2013-2015 Jeffrey Pfau
 2 *
 3 * This Source Code Form is subject to the terms of the Mozilla Public
 4 * License, v. 2.0. If a copy of the MPL was not distributed with this
 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 6#ifndef SIO_LOCKSTEP_H
 7#define SIO_LOCKSTEP_H
 8
 9#include "gba/sio.h"
10
11#include "util/threading.h"
12
13enum LockstepState {
14	LOCKSTEP_IDLE = 0,
15	LOCKSTEP_STARTED = 1,
16	LOCKSTEP_FINISHED = 2
17};
18
19struct GBASIOLockstep {
20	struct GBASIOLockstepNode* players[MAX_GBAS];
21	int attached;
22	int loadedMulti;
23	int loadedNormal;
24
25	uint16_t multiRecv[MAX_GBAS];
26	bool transferActive;
27	int32_t transferCycles;
28	int32_t nextEvent;
29
30	int waiting;
31	Mutex mutex;
32	Condition barrier;
33};
34
35struct GBASIOLockstepNode {
36	struct GBASIODriver d;
37	struct GBASIOLockstep* p;
38
39	int32_t nextEvent;
40	uint16_t multiSend;
41	bool normalSO;
42	enum LockstepState state;
43	int id;
44	enum GBASIOMode mode;
45};
46
47void GBASIOLockstepInit(struct GBASIOLockstep*);
48void GBASIOLockstepDeinit(struct GBASIOLockstep*);
49
50void GBASIOLockstepNodeCreate(struct GBASIOLockstepNode*);
51
52bool GBASIOLockstepAttachNode(struct GBASIOLockstep*, struct GBASIOLockstepNode*);
53void GBASIOLockstepDetachNode(struct GBASIOLockstep*, struct GBASIOLockstepNode*);
54
55#endif