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