mpv/mixer.h

#ifndef __MPLAYER_MIXER
#define __MPLAYER_MIXER

#include "libaf/af.h"
#include "libao2/audio_out.h"

extern char * mixer_device;
extern char * mixer_channel;
extern int soft_vol;
extern float soft_vol_max;

typedef struct mixer_s {
    ao_functions_t *audio_out;
    af_stream_t *afilter;
    int volstep;
    int muted;
    float last_l, last_r;
} mixer_t;

void mixer_getvolume(mixer_t *mixer, float *l, float *r);
void mixer_setvolume(mixer_t *mixer, float l, float r);
void mixer_incvolume(mixer_t *mixer);
void mixer_decvolume(mixer_t *mixer);
void mixer_getbothvolume(mixer_t *mixer, float *b);
void mixer_mute(mixer_t *mixer);
void mixer_getbalance(mixer_t *mixer, float *bal);
void mixer_setbalance(mixer_t *mixer, float bal);

//extern void mixer_setbothvolume( int v );
#define mixer_setbothvolume(m, v) mixer_setvolume(m, v, v)

#endif