AlsaMixer.app/AMixer/AChannel.cc

   1 // AChannel.cc
   2 //
   3 // Copyright (C) 2004, Petr Hlavka
   4 //
   5 // SPDX-License-Identifier: GPL-2.0+
   6
   7 #include "AMixer.h"
   8 #include "AItem.h"
   9 #include "AChannel.h"
  10
  11 #include <iostream>
  12
  13
  14 AChannel::AChannel(AItem *item, SNDCHID_T cID) {
  15   aItem = item;
  16   id = cID;
  17 }
  18
  19
  20 AChannel::~AChannel() {
  21 }
  22
  23
  24 long AChannel::getVolume() {
  25   long vol = 0;
  26
  27   snd_mixer_selem_get_playback_volume(aItem->aElem, (SNDCHID_T) id, &vol);
  28
  29   return (vol);
  30 }
  31
  32
  33 // it isn't necessery when using snd_mixer_selem_set_x_volume_all
  34 void AChannel::setVolume(long value) {
  35   std::cerr << "AChannel::setVolume not implemented!" << std::endl;
  36 }
  37
  38
  39 bool AChannel::isMuted() {
  40   int val;
  41
  42   if (!snd_mixer_selem_has_playback_switch(aItem->aElem)) {
  43           return (false); /* can't be muted? isn't muted. */
  44   }
  45   snd_mixer_selem_get_playback_switch(aItem->aElem, (SNDCHID_T) id, &val);
  46
  47   return (! (bool) val);
  48 }