# Advanced Audio Distribution Profile

A2DP defines how to stream multimedia audio from one device to another over a
Bluetooth connection. This mechanism is also called as Bluetooth audio
streaming.

To perform A2DP source or sink functions, you must first complete the steps in the following procedure.

## Set up device for A2DP functions

**Prerequisites**

- Enable SSH to access your host device. For instructions, see [Sign in using SSH](https://docs.qualcomm.com/bundle/publicresource/topics/80-70020-254/how_to.html#use-ssh).
- Pair the DUT and the remote device. For instructions, see [Pair with a remote Bluetooth device](https://docs.qualcomm.com/doc/80-70020-13/topic/bluez-perform-bluetooth-gap-functions.html#section-h4c-1bs-lcc-navyanka-08-21-24-1205-46-507).
- Place the DUT and the remote device in the Bluetooth vicinity.

**Procedure**

1. Run the SSH in command prompt using the following command:

ssh root@<device_IP_address>
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    **Example**

    If the IP address of the device is `10.92.160.222`, run the following command:

ssh root@10.92.160.222
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2. Connect to the SSH by entering the following password:

oelinux123
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3. Open the Bluetooth test application by running the following command:

bluetoothctl
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    **Sample output**

sh-5.1# bluetoothctl
        Agent registered        uetoothd...
        [CHG] Controller 22:22:F1:C1:99:C0 Pairable: yes
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4. Go to the **Transport submenu** or **Player submenu**, as required.

    - To go to the **Transport submenu**, run the following command from `bluetoothctl`:

menu transport
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        **Sample output**

[bluetooth]# menu transport
            Menu transport:
            Available commands:
            -------------------
            list                                              List available transports
            show <transport>                                  Transport information
            acquire <transport>                               Acquire Transport
            release <transport>                               Release Transport
            send <transport> <filename>                       Send contents of a file
            receive <transport> [filename]                    Get/Set file to receive
            volume <transport> [value]                        Get/Set transport volume
            back                                              Return to main menu
            version                                           Display version
            quit                                              Quit program
            exit                                              Quit program
            help                                              Display help about this program
            export                                            Print environment variables
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        To perform **Transport submenu** functions in the source, see [Perform Bluetooth A2DP source functions](https://docs.qualcomm.com/doc/80-70020-13/topic/bluez-perform-bluetooth-a2dp-source-functions.html#bluez-perform-bluetooth-a2dp-source-functions).

        To perform **Transport submenu** functions in the sink, see [Perform Bluetooth A2DP sink functions](https://docs.qualcomm.com/doc/80-70020-13/topic/bluez-perform-bluetooth-a2dp-sink-functions.html#bluez-perform-bluetooth-a2dp-sink-functions).
    - To go to the **Player submenu**, run the following command from `bluetoothctl`:

menu player
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        **Sample output**

[bluetooth]# menu player
            Menu player:
            Available commands:
            -------------------
            list                                              List available players
            show [player]                                     Player information
            select <player>                                   Select default player
            play [item]                                       Start playback
            pause                                             Pause playback
            stop                                              Stop playback
            next                                              Jump to next item
            previous                                          Jump to previous item
            fast-forward                                      Fast forward playback
            rewind                                            Rewind playback
            equalizer <on/off>                                Enable/Disable equalizer
            repeat <singletrack/alltrack/group/off>           Set repeat mode
            shuffle <alltracks/group/off>                     Set shuffle mode
            scan <alltracks/group/off>                        Set scan mode
            change-folder <item>                              Change current folder
            list-items [start] [end]                          List items of current folder
            search <string>                                   Search items containing string
            queue <item>                                      Add item to playlist queue
            show-item <item>                                  Show item information
            back                                              Return to main menu
            version                                           Display version
            quit                                              Quit program
            exit                                              Quit program
            help                                              Display help about this program
            export                                            Print environment variables
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        To perform **Player submenu** functions in the sink, see [Perform Bluetooth A2DP sink functions](https://docs.qualcomm.com/doc/80-70020-13/topic/bluez-perform-bluetooth-a2dp-sink-functions.html#bluez-perform-bluetooth-a2dp-sink-functions).

## Next steps

- [Perform Bluetooth A2DP source functions](https://docs.qualcomm.com/doc/80-70020-13/topic/bluez-perform-bluetooth-a2dp-source-functions.html)
You can perform Bluetooth A2DP source functions using the `bluetoothctl` menu, `menu transport` submenu, and `paplay` commands.
- [Perform Bluetooth A2DP sink functions](https://docs.qualcomm.com/doc/80-70020-13/topic/bluez-perform-bluetooth-a2dp-sink-functions.html)
You can perform Bluetooth A2DP sink functions using the `bluetoothctl` menu, `menu transport` submenu, and `menu player` submenu.

Last Published: Jun 26, 2025

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