1 #ifndef CYDWAVE_H
2 #define CYDWAVE_H
3 
4 /*
5 Copyright (c) 2009-2010 Tero Lindeman (kometbomb)
6 
7 Permission is hereby granted, free of charge, to any person
8 obtaining a copy of this software and associated documentation
9 files (the "Software"), to deal in the Software without
10 restriction, including without limitation the rights to use,
11 copy, modify, merge, publish, distribute, sublicense, and/or sell
12 copies of the Software, and to permit persons to whom the
13 Software is furnished to do so, subject to the following
14 conditions:
15 
16 The above copyright notice and this permission notice shall be
17 included in all copies or substantial portions of the Software.
18 
19 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
20 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
21 OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
22 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
23 HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
24 WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
25 FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
26 OTHER DEALINGS IN THE SOFTWARE.
27 */
28 
29 #include "cydtypes.h"
30 #include "cydentry.h"
31 #include <stdbool.h>
32 
33 typedef struct
34 {
35 	int direction; // 0 = forward, 1 = backwards
36 	bool playing;
37 	CydWaveAcc acc; // probably overkill
38 	Uint32 frequency;
39 } CydWaveState;
40 
41 Sint32 cyd_wave_get_sample(const CydWaveState *state, const CydWavetableEntry *wave_entry, CydWaveAcc acc);
42 void cyd_wave_cycle(CydWaveState *wave, const CydWavetableEntry *wave_entry);
43 
44 #endif
45