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diff --git a/distrib/sdl-1.2.15/src/audio/nds/soundcommon.h b/distrib/sdl-1.2.15/src/audio/nds/soundcommon.h
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+++ b/distrib/sdl-1.2.15/src/audio/nds/soundcommon.h
@@ -0,0 +1,80 @@
+/*
+ SDL - Simple DirectMedia Layer
+ Copyright (C) 1997-2012 Sam Lantinga
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ This library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+ Sam Lantinga
+ slouken@libsdl.org
+*/
+#include "SDL_config.h"
+
+#ifndef __SOUNDCOMMON_H
+#define __SOUNDCOMMON_H
+
+#include <nds.h>
+
+#define CLOCK (1 << 25)
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum
+{
+ NONE = 0,
+ INIT = 1,
+ MIX = 2,
+ MIXING = 4,
+ STOP = 8
+}CommandType;
+
+typedef enum
+{
+ FIFO_NONE = 0,
+ UPDATEON_ARM9 = 1,
+ MIXCOMPLETE_ONARM9 = 2,
+}FifoType;
+
+typedef struct
+{
+ s8 *mixbuffer;//,*soundbuffer;
+ u32 rate;
+ u32 buffersize;
+ u32 cmd;
+ u8 channel,format;
+ u32 soundcursor,numsamples;
+ s32 prevtimer;
+ s16 period;
+}S_SoundSystem;
+
+#define soundsystem ((S_SoundSystem*)((u32)(IPC)+sizeof(TransferRegion)))
+
+#ifdef ARM9
+extern void SoundSystemInit(u32 rate,u32 buffersize,u8 channel,u8 format);
+extern void SoundStartMixer(void);
+extern void SendCommandToArm7(u32 command);
+#else
+extern void SoundVBlankIrq(void);
+extern void SoundSwapAndMix(void);
+extern void SoundSetTimer(int period);
+extern void SoundFifoHandler(void);
+extern void SendCommandToArm9(u32 command);
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+#endif