Date: Sun, 29 Feb 2004 15:14:22 +0200 From: Martin_Storsj Subject: Dynamic loading of ALSA I recently discovered that SDL can dynamically load ESD and aRts, and made a patch which adds this same functionality to ALSA. The update for configure.in isn't too good (it should e.g. look for libasound.so in other directories than /usr/lib), because I'm not too good at shellscripting and autoconf. The reason for using dlfcn.h and dlopen instead of SDL_LoadLibrary and SDL_LoadFunction is that libasound uses versioned symbols, and it is necessary to load the correct version using dlvsym. This isn't probably any real portability issue, because ALSA is linux-only.

#ifndef _AICA_H_
#define _AICA_H_

#define	AICA_MEM	0xa0800000

#define SM_8BIT		1
#define SM_16BIT	0
#define SM_ADPCM	2

void aica_play(int ch,int mode,unsigned long smpptr,int looptst,int loopend,int freq,int vol,int pan,int loopflag);
void aica_stop(int ch);
void aica_vol(int ch,int vol);
void aica_pan(int ch,int pan);
void aica_freq(int ch,int freq);
int aica_get_pos(int ch);

#endif