/*	$Id: snd_if.h,v 1.2 2008/08/30 17:27:58 mtrillo Exp $	*/

#ifndef DEV_SND_IF_H
#define DEV_SND_IF_H

#include <sys/mutex.h>
#include <sys/sndio.h>


typedef void (*snd_postproc_t)(void *, u_char *, u_int);

struct snd_hw_if {
	int		(*set_params)(void *, u_int, struct snd_spec *, 
				      snd_postproc_t *, void **);
	kmutex_t*	(*get_mutex)(void *);
	u_int		(*round_buffersize)(void *, u_int, u_int);
	u_int		(*round_blocksize)(void *, u_int, u_int);
	void*		(*allocm)(void *, u_int, u_int, int);
	int		(*trigger_output)(void *, void *, void *, u_int, 
					  void (*)(void *), void *);
	int		(*trigger_input)(void *, void *, void *, u_int, 
					  void (*)(void *), void *);
	void		(*halt_output)(void *);
	void		(*halt_input)(void *);
	void		(*freem)(void *, void *);

	int		(*getdev)(void *, struct snd_device *);

	/* Mixer (in/out ports) */
	int	(*set_port)(void *, mixer_ctrl_t *);
	int	(*get_port)(void *, mixer_ctrl_t *);
	int	(*query_devinfo)(void *, mixer_devinfo_t *);

};

#define SND_MAGIC		0x534e4423
struct snd_attach_args {
	u_int			 sa_magic;
	const struct snd_hw_if	*sa_hw;
	void			*sa_hw_arg;
};


#endif // DEV_SND_IF_H