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-rw-r--r--chromeos/audio/cras_audio_handler.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/chromeos/audio/cras_audio_handler.h b/chromeos/audio/cras_audio_handler.h
index 10c77a4..60a3131 100644
--- a/chromeos/audio/cras_audio_handler.h
+++ b/chromeos/audio/cras_audio_handler.h
@@ -41,7 +41,12 @@ class CHROMEOS_EXPORT CrasAudioHandler : public CrasAudioClient::Observer,
virtual void OnOutputNodeVolumeChanged(uint64_t node_id, int volume);
// Called when output mute state changed.
- virtual void OnOutputMuteChanged(bool mute_on);
+ // |mute_on|: True if output is muted.
+ // |system_adjust|: True if the mute state is adjusted by the system
+ // automatically(i.e. not by user). UI should reflect the system's mute
+ // state, but it should not be too loud, e.g., the volume pop up window
+ // should not be triggered.
+ virtual void OnOutputMuteChanged(bool mute_on, bool system_adjust);
// Called when active input node's gain changed.
virtual void OnInputNodeGainChanged(uint64_t node_id, int gain);