Get the mute status of the audio output of a given audio device.
#include <audio/audio_manager_volume.h>
int audio_manager_get_output_mute(audio_manager_device_t dev, bool *mute)
The audio device to query.
true if the output of the audio device is being muted, false otherwise.
The audio_manager_get_output_mute() function returns the mute status of the audio output of a given audio device.
EOK upon success, negative errno upon failure.