1 /*

     2     SDL - Simple DirectMedia Layer

     3     Copyright (C) 1997-2006 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