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1 /*
2     SDL - Simple DirectMedia Layer
3     Copyright (C) 1997-2012 Sam Lantinga
4 
5     This library is free software; you can redistribute it and/or
6     modify it under the terms of the GNU Lesser General Public
7     License as published by the Free Software Foundation; either
8     version 2.1 of the License, or (at your option) any later version.
9 
10     This library is distributed in the hope that it will be useful,
11     but WITHOUT ANY WARRANTY; without even the implied warranty of
12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13     Lesser General Public License for more details.
14 
15     You should have received a copy of the GNU Lesser General Public
16     License along with this library; if not, write to the Free Software
17     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
18 
19     Sam Lantinga
20     slouken@libsdl.org
21 */
22 #include "SDL_config.h"
23 
24 #ifndef __SOUNDCOMMON_H
25 #define __SOUNDCOMMON_H
26 
27 #include <nds.h>
28 
29 #define CLOCK (1 << 25)
30 
31 #ifdef __cplusplus
32 extern "C" {
33 #endif
34 
35 typedef enum
36 {
37 	NONE = 0,
38 	INIT = 1,
39 	MIX = 2,
40 	MIXING = 4,
41 	STOP = 8
42 }CommandType;
43 
44 typedef enum
45 {
46 	FIFO_NONE = 0,
47 	UPDATEON_ARM9 = 1,
48 	MIXCOMPLETE_ONARM9 = 2,
49 }FifoType;
50 
51 typedef struct
52 {
53 	s8 *mixbuffer;//,*soundbuffer;
54 	u32 rate;
55 	u32 buffersize;
56 	u32 cmd;
57 	u8 channel,format;
58 	u32 soundcursor,numsamples;
59 	s32 prevtimer;
60 	s16 period;
61 }S_SoundSystem;
62 
63 #define soundsystem ((S_SoundSystem*)((u32)(IPC)+sizeof(TransferRegion)))
64 
65 #ifdef ARM9
66 extern void SoundSystemInit(u32 rate,u32 buffersize,u8 channel,u8 format);
67 extern void SoundStartMixer(void);
68 extern void SendCommandToArm7(u32 command);
69 #else
70 extern void SoundVBlankIrq(void);
71 extern void SoundSwapAndMix(void);
72 extern void SoundSetTimer(int period);
73 extern void SoundFifoHandler(void);
74 extern void SendCommandToArm9(u32 command);
75 #endif
76 
77 #ifdef __cplusplus
78 }
79 #endif
80 #endif
81