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#include <string.h>
#ifndef __MINGW32__
#include <sys/ioctl.h>
#endif
#include <fcntl.h>
#include <stdio.h>
#include <unistd.h>
#include "config.h"
#include "libao2/audio_out.h"
#include "libaf/af.h"
#include "mixer.h"
#include "help_mp.h"
char * mixer_device=NULL;
char * mixer_channel=NULL;
int soft_vol = 0;
float soft_vol_max = 110.0;
void mixer_getvolume(mixer_t *mixer, float *l, float *r)
{
ao_control_vol_t vol;
*l=0; *r=0;
if(mixer->audio_out){
if(soft_vol ||
CONTROL_OK != mixer->audio_out->control(AOCONTROL_GET_VOLUME,&vol)) {
if (!mixer->afilter)
return;
else {
float db_vals[AF_NCH];
if (!af_control_any_rev(mixer->afilter,
AF_CONTROL_VOLUME_LEVEL | AF_CONTROL_GET, db_vals))
db_vals[0] = db_vals[1] = 1.0;
else
af_from_dB (2, db_vals, db_vals, 20.0, -200.0, 60.0);
vol.left = (db_vals[0] / (soft_vol_max / 100.0)) * 100.0;
vol.right = (db_vals[1] / (soft_vol_max / 100.0)) * 100.0;
}
}
*r=vol.right;
*l=vol.left;
}
}
void mixer_setvolume(mixer_t *mixer, float l, float r)
{
ao_control_vol_t vol;
vol.right=r; vol.left=l;
if(mixer->audio_out){
if(soft_vol ||
CONTROL_OK != mixer->audio_out->control(AOCONTROL_SET_VOLUME,&vol)) {
if (!mixer->afilter)
return;
else {
// af_volume uses values in dB
float db_vals[AF_NCH];
int i;
db_vals[0] = (l / 100.0) * (soft_vol_max / 100.0);
db_vals[1] = (r / 100.0) * (soft_vol_max / 100.0);
for (i = 2; i < AF_NCH; i++) {
db_vals[i] = ((l + r) / 100.0) * (soft_vol_max / 100.0) / 2.0;
}
af_to_dB (AF_NCH, db_vals, db_vals, 20.0);
if (!af_control_any_rev(mixer->afilter,
AF_CONTROL_VOLUME_LEVEL | AF_CONTROL_SET, db_vals)) {
mp_tmsg(MSGT_GLOBAL, MSGL_INFO, "[Mixer] No hardware mixing, inserting volume filter.\n");
if (af_add(mixer->afilter, "volume")) {
if (!af_control_any_rev(mixer->afilter,
AF_CONTROL_VOLUME_LEVEL | AF_CONTROL_SET, db_vals)) {
mp_tmsg(MSGT_GLOBAL, MSGL_ERR, "[Mixer] No volume control available.\n");
return;
}
}
}
}
}
}
mixer->muted=0;
}
void mixer_incvolume(mixer_t *mixer)
{
float mixer_l, mixer_r;
mixer_getvolume(mixer, &mixer_l, &mixer_r);
mixer_l += mixer->volstep;
if ( mixer_l > 100 ) mixer_l = 100;
mixer_r += mixer->volstep;
if ( mixer_r > 100 ) mixer_r = 100;
mixer_setvolume(mixer, mixer_l, mixer_r);
}
void mixer_decvolume(mixer_t *mixer)
{
float mixer_l, mixer_r;
mixer_getvolume(mixer, &mixer_l, &mixer_r);
mixer_l -= mixer->volstep;
if ( mixer_l < 0 ) mixer_l = 0;
mixer_r -= mixer->volstep;
if ( mixer_r < 0 ) mixer_r = 0;
mixer_setvolume(mixer, mixer_l, mixer_r);
}
void mixer_getbothvolume(mixer_t *mixer, float *b)
{
float mixer_l, mixer_r;
mixer_getvolume(mixer, &mixer_l, &mixer_r);
*b = ( mixer_l + mixer_r ) / 2;
}
void mixer_mute(mixer_t *mixer)
{
if (mixer->muted) mixer_setvolume(mixer, mixer->last_l, mixer->last_r);
else
{
mixer_getvolume(mixer, &mixer->last_l, &mixer->last_r);
mixer_setvolume(mixer, 0, 0);
mixer->muted=1;
}
}
void mixer_getbalance(mixer_t *mixer, float *val)
{
*val = 0.f;
if(!mixer->afilter)
return;
af_control_any_rev(mixer->afilter,
AF_CONTROL_PAN_BALANCE | AF_CONTROL_GET, val);
}
void mixer_setbalance(mixer_t *mixer, float val)
{
float level[AF_NCH];
int i;
af_control_ext_t arg_ext = { .arg = level };
af_instance_t* af_pan_balance;
if(!mixer->afilter)
return;
if (af_control_any_rev(mixer->afilter,
AF_CONTROL_PAN_BALANCE | AF_CONTROL_SET, &val))
return;
if (!(af_pan_balance = af_add(mixer->afilter, "pan"))) {
mp_tmsg(MSGT_GLOBAL, MSGL_ERR, "[Mixer] No balance control available.\n");
return;
}
af_init(mixer->afilter);
/* make all other channels pass thru since by default pan blocks all */
memset(level, 0, sizeof(level));
for (i = 2; i < AF_NCH; i++) {
arg_ext.ch = i;
level[i] = 1.f;
af_pan_balance->control(af_pan_balance,
AF_CONTROL_PAN_LEVEL | AF_CONTROL_SET, &arg_ext);
level[i] = 0.f;
}
af_pan_balance->control(af_pan_balance,
AF_CONTROL_PAN_BALANCE | AF_CONTROL_SET, &val);
}
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