aboutsummaryrefslogtreecommitdiff
path: root/common/system.h
blob: c0fabec1b4cb87465ee4a96a9e1bbf7f38720e69 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
/* ScummVM - Scumm Interpreter
 * Copyright (C) 2001  Ludvig Strigeus
 * Copyright (C) 2001/2002 The ScummVM project
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.

 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * $Header$
 *
 */

#ifndef COMMON_SYSTEM_H
#define COMMON_SYSTEM_H

#include "scummsys.h"

// Interface to the ScummVM backend

class OSystem {
public:
	typedef int ThreadProc(void *param);
	typedef void SoundProc(void *param, byte *buf, int len);

	struct Event {
		int event_code;
		struct {
			uint16 ascii;
			byte flags;
			int keycode;
		} kbd;
		struct {
			int x,y;
		} mouse;
	};

	enum {
		EVENT_KEYDOWN = 1,
		EVENT_KEYUP = 2,
		EVENT_MOUSEMOVE = 3,
		EVENT_LBUTTONDOWN = 4,
		EVENT_LBUTTONUP = 5,
		EVENT_RBUTTONDOWN = 6,
		EVENT_RBUTTONUP = 7,
	};

	enum {
		KBD_CTRL = 1,
		KBD_ALT = 2,
		KBD_SHIFT = 4,
	};

	enum {
		PROP_TOGGLE_FULLSCREEN = 1,
		PROP_SET_WINDOW_CAPTION = 2,
		PROP_OPEN_CD = 3,
		PROP_SET_GFX_MODE = 4,
		PROP_SHOW_DEFAULT_CURSOR = 5,
		PROP_GET_SAMPLE_RATE = 6,
		PROP_GET_FULLSCREEN = 7
	};
	union Property {
		char *caption;
		int cd_num;
		int gfx_mode;
		bool show_cursor;
	};
	
	enum {
		SOUND_8BIT = 0,
		SOUND_16BIT = 1,
	};
	
	// Set colors of the palette
	virtual void set_palette(const byte *colors, uint start, uint num) = 0;

	// Set the size of the video bitmap.
	// Typically, 320x200
	virtual void init_size(uint w, uint h) = 0;

	// Draw a bitmap to screen.
	// The screen will not be updated to reflect the new bitmap
	virtual void copy_rect(const byte *buf, int pitch, int x, int y, int w, int h) = 0;

	// Moves the screen content around by the given amount of pixels
	// but only the top height pixel rows, the rest stays untouched
	virtual void move_screen(int dx, int dy, int height) = 0;

	// Update the dirty areas of the screen
	virtual void update_screen() = 0;

	// Either show or hide the mouse cursor
	virtual bool show_mouse(bool visible) = 0;
	
	// Set the position of the mouse cursor
	virtual void set_mouse_pos(int x, int y) = 0;
	
	// Set the bitmap that's used when drawing the cursor.
	virtual void set_mouse_cursor(const byte *buf, uint w, uint h, int hotspot_x, int hotspot_y) = 0;
	
	// Shaking is used in SCUMM. Set current shake position.
	virtual void set_shake_pos(int shake_pos) = 0;
		
	// Get the number of milliseconds since the program was started.
	virtual uint32 get_msecs() = 0;
	
	// Delay for a specified amount of milliseconds
	virtual void delay_msecs(uint msecs) = 0;
	
	// Create a thread
	virtual void *create_thread(ThreadProc *proc, void *param) = 0;
	
	// Get the next event.
	// Returns true if an event was retrieved.	
	virtual bool poll_event(Event *event) = 0;

	// Set the function to be invoked whenever samples need to be generated
	// Format is the sample type format.
	// Only 16-bit signed mode is needed for simon & scumm
	virtual bool set_sound_proc(void *param, SoundProc *proc, byte format) = 0;
	
	// Get or set a property
	virtual uint32 property(int param, Property *value) = 0;
		
	// Poll cdrom status
	// Returns true if cd audio is playing
	virtual bool poll_cdrom() = 0;

	// Play cdrom audio track
	virtual void play_cdrom(int track, int num_loops, int start_frame, int end_frame) = 0;

	// Stop cdrom audio track
	virtual void stop_cdrom() = 0;

	// Update cdrom audio status
	virtual void update_cdrom() = 0;

	// Add a new callback timer
	virtual void set_timer(int timer, int (*callback)(int)) = 0;

	// Mutex handling
	virtual void *create_mutex(void) = 0;
	virtual void lock_mutex(void *mutex) = 0;
	virtual void unlock_mutex(void *mutex) = 0;
	virtual void delete_mutex(void *mutex) = 0;

	// Quit
	virtual void quit() = 0;
};


/* Factory functions. This means we don't have to include the
 * OSystem_SDL header file. (which in turn would require the SDL headers)
 */

/* OSystem_SDL */
extern OSystem *OSystem_SDL_create(int gfx_driver, bool full_screen);
extern OSystem *OSystem_NULL_create();
extern OSystem *OSystem_MorphOS_create(int game_id, int gfx_driver, bool full_screen);
extern OSystem *OSystem_Dreamcast_create();
extern OSystem *OSystem_WINCE3_create();
extern OSystem *OSystem_X11_create();
extern OSystem *OSystem_MAC_create(int gfx_mode, bool full_screen);

enum {
	GFX_NORMAL = 0,
	GFX_DOUBLESIZE = 1,
	GFX_TRIPLESIZE = 2,
	GFX_2XSAI = 3,
	GFX_SUPER2XSAI = 4,
	GFX_SUPEREAGLE = 5,
	GFX_ADVMAME2X = 6
};


/* Graphics drivers */
enum {
	GD_NULL = 0,
	GD_SDL,
	GD_X,
	GD_MORPHOS,
	GD_WINCE,
	GD_MAC,
	GD_DC
};

enum {
#ifdef _WIN32_WCE
	SAMPLES_PER_SEC =  11025
#else
	SAMPLES_PER_SEC =  22050
#endif
};

#endif