Add mute/unmute functions. REflect new functionality in aiomixer.

1 files changed, 33 insertions, 0 deletions

diff --git a/src/mixer.cc b/src/mixer.cc
index 00cf156..dd9202c 100644
--- a/src/mixer.cc
+++ b/src/mixer.cc
@@ -336,3 +336,36 @@ bool Mixer::capture()
 
   return true;
 }
+
+void Mixer::setMuted(bool muted)
+{
+  if(!isPlayback()) return;
+  int p = muted?0:1;
+  int err;
+  err = snd_mixer_selem_set_playback_switch_all(elem, p);
+  if(err) {
+    printf("snd_mixer_selem_set_playback_switch_all: %s, %d\n",
+           snd_strerror(err), err);
+  }
+}
+
+bool Mixer::muted()
+{
+  if(!isPlayback()) return false;
+
+  int err;
+  
+  int num = numberOfChannels();
+  for(int idx = 0; idx < num; idx++) {
+    int value;
+    err = snd_mixer_selem_get_playback_switch(elem, chanId(idx), &value);
+    if(err) {
+      printf(" snd_mixer_selem_get_playback_switch: %s, %d\n",
+             snd_strerror(err), err);
+      return true;
+    }
+    if(value == 0) return true;
+ }
+
+  return false;
+}