aboutsummaryrefslogtreecommitdiffhomepage
path: root/mixer.c
blob: 3e66b78cfcb5cd3bf877819440b33de1f36f2810 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
#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_msg(MSGT_GLOBAL, MSGL_INFO, MSGTR_InsertingAfVolume);
          if (af_add(mixer->afilter, "volume")) {
            if (!af_control_any_rev(mixer->afilter,
                   AF_CONTROL_VOLUME_LEVEL | AF_CONTROL_SET, db_vals)) {
              mp_msg(MSGT_GLOBAL, MSGL_ERR, MSGTR_NoVolume);
              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_msg(MSGT_GLOBAL, MSGL_ERR, MSGTR_NoBalance);
    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);
}