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annotate src/audio/nds/soundcommon.h @ 3976:8582c6a5ca16 SDL-1.2

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Added initial support for Nintendo DS, based on the work by Troy Davis (GPF)
author Sam Lantinga <slouken@libsdl.org>
date Mon, 25 Jun 2007 00:50:20 +0000
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children a1b03ba2fcd0
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3976
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 #ifndef __SOUNDCOMMON_H
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25 #define __SOUNDCOMMON_H
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26
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27 #include <nds.h>
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28
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29 #define CLOCK (1 << 25)
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30
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31 #ifdef __cplusplus
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32 extern "C" {
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33 #endif
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34
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35 typedef enum
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36 {
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37 NONE = 0,
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38 INIT = 1,
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39 MIX = 2,
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40 MIXING = 4,
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41 STOP = 8
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42 }CommandType;
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43
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44 typedef enum
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45 {
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46 FIFO_NONE = 0,
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47 UPDATEON_ARM9 = 1,
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48 MIXCOMPLETE_ONARM9 = 2,
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49 }FifoType;
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50
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51 typedef struct
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52 {
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53 s8 *mixbuffer;//,*soundbuffer;
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54 u32 rate;
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55 u32 buffersize;
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56 u32 cmd;
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57 u8 channel,format;
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58 u32 soundcursor,numsamples;
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59 s32 prevtimer;
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60 s16 period;
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61 }S_SoundSystem;
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62
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63 #define soundsystem ((S_SoundSystem*)((u32)(IPC)+sizeof(TransferRegion)))
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64
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65 #ifdef ARM9
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66 extern void SoundSystemInit(u32 rate,u32 buffersize,u8 channel,u8 format);
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67 extern void SoundStartMixer(void);
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68 extern void SendCommandToArm7(u32 command);
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69 #else
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70 extern void SoundVBlankIrq(void);
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71 extern void SoundSwapAndMix(void);
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72 extern void SoundSetTimer(int period);
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73 extern void SoundFifoHandler(void);
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74 extern void SendCommandToArm9(u32 command);
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75 #endif
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76
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77 #ifdef __cplusplus
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78 }
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79 #endif
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80 #endif