# Advanced Audio Distribution Profile

Source: [https://docs.qualcomm.com/doc/80-70017-13/topic/bluez-a2dp.html](https://docs.qualcomm.com/doc/80-70017-13/topic/bluez-a2dp.html)

A2DP defines how multimedia audio can be streamed 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 [Log in using SSH](https://docs.qualcomm.com/bundle/publicresource/topics/80-70017-254/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/80-70017-13/topic/bluez-perform-bluetooth-gap-functions.html#bluez-perform-bluetooth-gap-functions__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>Copy to clipboard

    **Example**

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

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

        oelinux123Copy to clipboard
3. Open the Bluetooth test application by running the following command: 

        bluetoothctlCopy to clipboard

    **Sample output**

sh-5.1# bluetoothctl
        Agent registered        uetoothd...
        [CHG] Controller 22:22:F1:C1:99:C0 Pairable: yesCopy to clipboard
4. Go to the Transport submenu or Player
                        submenu, as required.
    - To go to the Transport submenu, run the following
                            command from
                                    `bluetoothctl`:

            menu transportCopy to clipboard

        **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 variablesCopy to clipboard

        To perform Transport submenu functions in
                                the source, see [Perform Bluetooth A2DP source functions](https://docs.qualcomm.com/doc/80-70017-13/topic/bluez-perform-bluetooth-a2dp-source-functions.html).

        To perform Transport submenu
                                functions in the sink, see [Perform Bluetooth A2DP sink functions](https://docs.qualcomm.com/doc/80-70017-13/topic/bluez-perform-bluetooth-a2dp-sink-functions.html).
    - To go to the Player submenu, run the following
                            command from
                                    `bluetoothctl`:

            menu playerCopy to clipboard

        **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 variablesCopy to clipboard

        To perform Player submenu functions in the
                                sink, see [Perform Bluetooth A2DP sink functions](https://docs.qualcomm.com/doc/80-70017-13/topic/bluez-perform-bluetooth-a2dp-sink-functions.html).

- **[Perform Bluetooth A2DP source functions](https://docs.qualcomm.com/doc/80-70017-13/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/80-70017-13/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.

**Parent Topic:** [Verify functionality of BlueZ stack](https://docs.qualcomm.com/doc/80-70017-13/topic/verify-bluetooth-functionality-of-bluez-stack.html)

Last Published: Dec 26, 2024

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