mixer.h

   1 /*
   2  * This file is part of MPlayer.
   3  *
   4  * MPlayer is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * MPlayer is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #ifndef MPLAYER_MIXER_H
  20 #define MPLAYER_MIXER_H
  21
  22 #include <stdbool.h>
  23
  24 #include "libaf/af.h"
  25 #include "libao2/audio_out.h"
  26
  27 typedef struct mixer {
  28     struct ao *ao;
  29     af_stream_t *afilter;
  30     int volstep;
  31     bool softvol;
  32     float softvol_max;
  33     bool muted;
  34     bool muted_by_us;
  35     bool muted_using_volume;
  36     float vol_l, vol_r;
  37     /* Contains ao driver name or "softvol" if volume is not persistent
  38      * and needs to be restored after the driver is reinitialized. */
  39     const char *restore_volume;
  40     float balance;
  41 } mixer_t;
  42
  43 void mixer_reinit(struct mixer *mixer, struct ao *ao);
  44 void mixer_uninit(struct mixer *mixer);
  45 void mixer_getvolume(mixer_t *mixer, float *l, float *r);
  46 void mixer_setvolume(mixer_t *mixer, float l, float r);
  47 void mixer_incvolume(mixer_t *mixer);
  48 void mixer_decvolume(mixer_t *mixer);
  49 void mixer_getbothvolume(mixer_t *mixer, float *b);
  50 void mixer_setmute(mixer_t *mixer, bool mute);
  51 bool mixer_getmute(mixer_t *mixer);
  52 void mixer_getbalance(mixer_t *mixer, float *bal);
  53 void mixer_setbalance(mixer_t *mixer, float bal);
  54
  55 #endif /* MPLAYER_MIXER_H */