Merge "APM: use dock device for volume when dock device is selected." into udc-dev

        return *(deviceTypes.begin());

    } else {

        // Multiple device selection is either:

        //  - dock + one other device: give priority to dock in this case.

        //  - speaker + one other device: give priority to speaker in this case.

        //  - one A2DP device + another device: happens with duplicated output. In this case

        // retain the device on the A2DP output as the other must not correspond to an active

        // selection if not the speaker.

        //  - HDMI-CEC system audio mode only output: give priority to available item in order.

        if (deviceTypes.count(AUDIO_DEVICE_OUT_SPEAKER) != 0) {

        if (deviceTypes.count(AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET) != 0) {

            return AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET;

        } else if (deviceTypes.count(AUDIO_DEVICE_OUT_SPEAKER) != 0) {

            return AUDIO_DEVICE_OUT_SPEAKER;

        } else if (deviceTypes.count(AUDIO_DEVICE_OUT_SPEAKER_SAFE) != 0) {

            return AUDIO_DEVICE_OUT_SPEAKER_SAFE;