1/* Copyright (c) 2013-2016 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 DS_VIDEO_H
 7#define DS_VIDEO_H
 8
 9#include <mgba-util/common.h>
10
11CXX_GUARD_START
12
13#include <mgba/core/log.h>
14
15mLOG_DECLARE_CATEGORY(DS_VIDEO);
16
17enum {
18	DS_VIDEO_HORIZONTAL_PIXELS = 256,
19	DS_VIDEO_HBLANK_PIXELS = 99,
20	DS_VIDEO_HORIZONTAL_LENGTH = (DS_VIDEO_HORIZONTAL_PIXELS + DS_VIDEO_HBLANK_PIXELS) * 6,
21
22	DS_VIDEO_VERTICAL_PIXELS = 192,
23	DS_VIDEO_VBLANK_PIXELS = 71,
24	DS_VIDEO_VERTICAL_TOTAL_PIXELS = DS_VIDEO_VERTICAL_PIXELS + DS_VIDEO_VBLANK_PIXELS,
25
26	DS_VIDEO_TOTAL_LENGTH = DS_VIDEO_HORIZONTAL_LENGTH * DS_VIDEO_VERTICAL_TOTAL_PIXELS,
27};
28
29struct DS;
30struct DSVideo {
31	struct DS* p;
32
33	// VCOUNT
34	int vcount;
35
36	int32_t nextHblank;
37	int32_t nextEvent;
38	int32_t eventDiff;
39
40	int32_t nextHblankIRQ;
41	int32_t nextVblankIRQ;
42	int32_t nextVcounterIRQ;
43
44	int32_t frameCounter;
45	int frameskip;
46	int frameskipCounter;
47};
48
49void DSVideoInit(struct DSVideo* video);
50void DSVideoReset(struct DSVideo* video);
51void DSVideoDeinit(struct DSVideo* video);
52
53CXX_GUARD_START
54
55#endif