# Perform Bluetooth A2DP sink functions Source: [https://docs.qualcomm.com/doc/80-70017-13/topic/perform-a2dp-sink-functions.html](https://docs.qualcomm.com/doc/80-70017-13/topic/perform-a2dp-sink-functions.html) You can perform A2DP sink functions using the `a2dp_sink_menu` options. Before you begin, set up the device and go to the A2DP sink menu as described in [Set up device for A2DP functions](https://docs.qualcomm.com/doc/80-70017-13/topic/set-up-a2dp.html#set-up-a2dp__section_j44_jzy_kcc_navyanka_08-18-24-2110-52-709). ## Connect to an A2DP sink device To connect to an A2DP sink device, run the following command: connect Copy to clipboard **Parameters** `` is the Bluetooth address of the remote device. **Example** To connect to a remote device with the Bluetooth address `f8:7d:76:9d:9b:6b`, run the following command: connect f8:7d:76:9d:9b:6bCopy to clipboard **Sample output** connect f8:7d:76:9d:9b:6b No session exists for the usecase The server answered: obj path: '/org/pulseaudio/ext/pal/loopback/ses_1' BT a2dp connect success ACL state:0 change with reason 00 for device: f8:7d:76:9d:9b:6b Codec Configuration for device f8:7d:76:9d:9b:6b Codec type = SBC Sample Rate = 44100 Channel Mode = 2 A2DP Sink Connected to f8:7d:76:9d:9b:6b AVRCP_CTRL_CONNECTED_CB <-- getcap rsp message received! num_supported:1, rsp_type: 12 CompanyIDO: 0x6488 AVRCP_CTRL_BR_CONNECTED_CB <-- getcap rsp message received! num_supported:7, rsp_type: 12 SupportedEvent0: 0x1 SupportedEvent1: 0x2 SupportedEvent2: 0x8 SupportedEvent3: 0x9 SupportedEvent4: 0x10 SupportedEvent5: 0x11 SupportedEvent6: 0x12 <-- notification message received! event_id:1, rsp_type:0 EVENT_PLAYBACK_STATUS_CHANGED play_status: 0x0 <-- notification message received! event_id:2, rsp_type:0 EVENT_TRACK_CHANGED track: 0xff <-- notification message received! event_id:8, rsp_type:0 EVENT_APP_SETTING_CHANGED attr_id0: 0x2 attr_value0: 0x1 EVENT_APP_SETTING_CHANGED attr_id1: 0x3 attr_valuel: 0x1 <-- notification message received! event_id:9, rsp_type:0 EVENT_NOW_PLAYING_CHANGED <-- notification message received! event_id:10, rsp_type:0 EVENT_AVAL_PLAYERS_CHANGED <-- notification message received! event_id:11, rsp_type:0 EVENT_ADDR_PLAYER_CHANGED player_id: 0x1 uid_counter: 0x0 ^[S Processing event 441 in state 1 current State = 1, new state = 2Copy to clipboard ## Play an audio file To play an audio file on the remote device, run the following command: play Copy to clipboard **Parameters** `` is the Bluetooth address of the remote device. **Example** To play an audio file on a remote device with the Bluetooth address `f8:7d:76:9d:9b:6b`, run the following command: play f8:7d:76:9d:9b:6bCopy to clipboard **Sample output** *********************************************** play f8:7d:76:9d:9b:6b *********************************************** Recieved Start from Src device *********************************************** <-- notification message received! event_id:1, rsp_type:1 EVENT_PLAYBACK_STATUS_CHANGED play_status: 0x1 <-- notification message received! event_id:2, rsp_type:1 EVENT_TRACK_CHANGED track: 0x0 <-- notification message received! event_id:1, rsp_type:0 EVENT_PLAYBACK_STATUS_CHANGED play_status: 0x1 <-- notification message received! event_id:2, rsp_type:0 EVENT_TRACK_CHANGED track: 0x0 btsink_enable=1 successCopy to clipboard ## Pause audio playback To pause audio playback, run the following command: pause Copy to clipboard **Parameters** `` is the Bluetooth address of the remote device. **Example** To pause audio playback on a remote device with the Bluetooth address `f8:7d:76:9d:9b:6b`, run the following command: pause f8:7d:76:9d:9b:6bCopy to clipboard **Sample output** pause f8:7d:76:9d:9b:6b <-- notification message received! event_id:1, rsp_type:1 EVENT_PLAYBACK_STATUS_CHANGED play_status: 0x0 <-- notification message received! event_id:2, rsp_type:1 EVENT_TRACK_CHANGED track: 0xff <-- notification message received! event_id:1, rsp_type:0 EVENT_PLAYBACK_STATUS_CHANGED play_status: 0x0 <-- notification message received! event_id:2, rsp_type:0 EVENT_TRACK_CHANGED track: 0xff **************************************************** Recieved Suspend from Src device **************************************************** btsink enable=0 successCopy to clipboard ## Stop audio playback To stop audio playback, run the following command: stop Copy to clipboard **Parameters** `` is the Bluetooth address of the remote device. **Example** To stop audio playback on a remote device with the Bluetooth address `f8:7d:76:9d:9b:6b`, run the following command: stop f8:7d:76:9d:9b:6bCopy to clipboard **Sample output** stop f8:7d:76:9d:9b:6b <-- notification message received! event_id:1, rsp_type:1 EVENT_PLAYBACK_STATUS_CHANGED play_status: 0x0 <-- notification message received! event_id:2, rsp_type:1 EVENT_TRACK_CHANGED track: 0xff <-- notification message received! event_id:1, rsp_type:0 EVENT_PLAYBACK_STATUS_CHANGED play_status: 0x0 <-- notification message received! event_id:2, rsp_type:0 EVENT_TRACK_CHANGED track: 0xffCopy to clipboard ## Rewind an audio playback To rewind an audio playback, run the following command: rewind Copy to clipboard **Parameters** `` is the Bluetooth address of the remote device. **Example** To rewind audio playback on a remote device with the Bluetooth address `f8:7d:76:9d:9b:6b`, run the following command: rewind f8:7d:76:9d:9b:6bCopy to clipboard ## Increase the volume To increase the volume by one, run the following command: volup Copy to clipboard **Parameters** `` is the Bluetooth address of the remote device. **Example** To increase the volume of a remote device with the Bluetooth address `f8:7d:76:9d:9b:6b`, run the following command: volup f8:7d:76:9d:9b:6bCopy to clipboard ## Decrease the volume To decrease the volume by one, run the following command: voldown Copy to clipboard **Parameters** `` is the Bluetooth address of the remote device. **Example** To decrease the volume of a remote device with the Bluetooth address `f8:7d:76:9d:9b:6b`, run the following command: voldown f8:7d:76:9d:9b:6bCopy to clipboard ## Set volume level To set the volume level, run the following command: volchangednoti Copy to clipboard **Parameters** `` is the level of volume. It ranges from 0 to 15. **Example** To set the absolute volume to level 10, run the following command: volchangednoti 10Copy to clipboard **Sample output** volchangednoti 10 btsink_volume=10 set successfully volchangednoti 15 btsink_volume=15 set successfullyCopy to clipboard ## Mute the volume To mute the volume, run the following command: mute Copy to clipboard **Parameters** `` is the Bluetooth address of the remote device. **Example** To mute the volume of a remote device with the Bluetooth address `f8:7d:76:9d:9b:6b`, run the following command: mute f8:7d:76:9d:9b:6bCopy to clipboard ## Set codec priority To set the codec priority of the sink, run the following command: codec_list Copy to clipboard **Parameters** `` is the order of priority. **Example** To set the first priority as SBC 44.1 kHz and the second priority as SBC 48 kHz, run the following command: codec_list sbc,44.1,sbc,48Copy to clipboard **Sample output** codec_list sbc,44.1,sbc,48 Codec List: sbc,44.1,sbc,48 num_codec_configs = 2Copy to clipboard Note: The priority of codecs is applied to new connections. Hence, set the codec priority before establishing a connection. ## Other functions The following player-related settings depend on the capabilities of the remote device player. You can configure or explore these settings based on your remote device player. - Get and configure player settings - Know the current player status - Add a track to a playlist - Get details about the current track - Search for an audio file **Parent Topic:** [Advanced Audio Distribution Profile](https://docs.qualcomm.com/doc/80-70017-13/topic/set-up-a2dp.html) Last Published: Dec 26, 2024 [Previous Topic Perform Bluetooth A2DP source functions](https://docs.qualcomm.com/bundle/publicresource/80-70017-13/topics/perform-a2dp-source-functions.md) [Next Topic Hands-Free Profile](https://docs.qualcomm.com/bundle/publicresource/80-70017-13/topics/set-up-hfp.md)