Audio Management

You can control the volume level of several sound types and get information about the current sound mode and the state of the current sound devices. The available sound types include, for example, system, notifications, alarms, and media.

This feature is supported in mobile and wearable applications only.

The main features of the Sound API include the following:

Prerequisites

To use the Sound API (in mobile and wearable applications), the application has to request permission by adding the following privilege to the config.xml file:

<tizen:privilege name="http://tizen.org/privilege/volume.set"/>

Manage volume and sound mode

Managing volume levels and sound modes is a basic multimedia management skill, follow these steps to manage volume and sound mode:

  1. Get the current volume level using the getVolume() method:

    var vol = tizen.sound.getVolume('RINGTONE');

  2. Set a new volume level using the setVolume() method.

    The following example increases the ringtone volume by 10% of the maximum volume level:

    tizen.sound.setVolume('RINGTONE', vol + 0.1);

  3. Get the current sound mode using the getSoundMode() method:

    var mode = tizen.sound.getSoundMode();
console.log('Sound Mode is ' + mode);

Monitor volume and sound mode changes

Managing volume and sound mode changes is a basic multimedia management skill, follow these steps to monitor volume and sound mode:

  1. Register the volume change listener to track changes in the volume level:

    function onsuccessCB(type, volume) {
    console.log('SoundType is ' + type);
    console.log('Volume is ' + volume);
    tizen.sound.unsetVolumeChangeListener();
}

tizen.sound.setVolumeChangeListener(onsuccessCB);

  2. Register the sound mode change listener to track changes in the sound mode:

    function onsuccessCB(mode) {
    console.log('Mode is ' + mode);
    tizen.sound.unsetSoundModeChangeListener();
}

tizen.sound.setSoundModeChangeListener(onsuccessCB);

Manage sound devices

Learning how to list connected and activated sound devices allows you to manage sound devices more effectively, follow these steps to manage sound devices:

  1. Get a list of the current sound devices in a connected state using the getConnectedDeviceList() method:

    var infoArr = tizen.sound.getConnectedDeviceList();

for (var i = 0; i < infoArr.length; i++) {
    console.log(infoArr[i].device);
}

  2. Get a list of the current sound devices in a running state using the getConnectedDeviceList() method and checking the isRunning property:

    var infoArr = tizen.sound.getConnectedDeviceList();

for (var i = 0; i < infoArr.length; i++) {
    if(infoArr[i].isRunning) {
        console.log(infoArr[i].device);
    }
}

Monitor the sound device state

Learning how to monitor changes in the sound device state makes it easier for you to manage the sound devices:

  1. Add a sound device state change listener to track changes in the sound device state:

    function onchangedCB(info) {
    if (info.isConnected) {
        console.log(info.device + ' is connected');
    } else {
        console.log(info.device + ' is not connected');
    }

    if (info.isActivated) {
        console.log(info.device + ' is activated');
    } else {
        console.log(info.device + ' is not activated');
    }
}

var listenerId = tizen.sound.addDeviceStateChangeListener(onChangedCB);

  2. When no longer needed, use the listener ID to remove the sound device state change listener:

    tizen.sound.removeDeviceStateChangeListener(listenerId);
  • Dependencies
    • Tizen 2.4 and Higher for Mobile
    • Tizen 2.3.1 and Higher for Wearable
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