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Commit b87c7f16 authored by chelseahao's avatar chelseahao Committed by Chelsea Hao
Browse files

Introduce a function to derive a more meaningful state for the UI from... 

Introduce a function to derive a more meaningful state for the UI from `BluetoothLeBroadcastReceiveState`.

Test: atest
Bug: 308368124
Flag: com.android.settingslib.flags.enable_le_audio_sharing
Change-Id: I08be93310f6e5bc0624259879239a8f8a6b40caf
parent bc454980

packages/SettingsLib/src/com/android/settingslib/bluetooth/LocalBluetoothLeBroadcastAssistant.java

+41 −0
Original line number Diff line number Diff line
@@ -52,6 +52,14 @@ import java.util.concurrent.Executors; 
 * BluetoothLeBroadcastAssistant.Callback} to get the result callback.

 */

public class LocalBluetoothLeBroadcastAssistant implements LocalBluetoothProfile {

    /** A derived source state based on {@link BluetoothLeBroadcastReceiveState}. */

    public enum LocalBluetoothLeBroadcastSourceState {

        UNKNOWN,

        STREAMING,

        DECRYPTION_FAILED,

        PAUSED,

    }



    private static final String TAG = "LocalBluetoothLeBroadcastAssistant";

    private static final int UNKNOWN_VALUE_PLACEHOLDER = -1;

    private static final boolean DEBUG = BluetoothUtils.D;
@@ -59,6 +67,13 @@ public class LocalBluetoothLeBroadcastAssistant implements LocalBluetoothProfile 
    static final String NAME = "LE_AUDIO_BROADCAST_ASSISTANT";

    // Order of this profile in device profiles list

    private static final int ORDINAL = 1;

    // Referring to Broadcast Audio Scan Service 1.0

    // Table 3.9: Broadcast Receive State characteristic format

    // 0x00000000: 0b0 = Not synchronized to BIS_index[x]

    // 0xFFFFFFFF: Failed to sync to BIG

    private static final long BIS_SYNC_NOT_SYNC_TO_BIS = 0x00000000L;

    private static final long BIS_SYNC_FAILED_SYNC_TO_BIG = 0xFFFFFFFFL;

    private static final String EMPTY_DEVICE_ADDRESS = "00:00:00:00:00:00";



    private LocalBluetoothProfileManager mProfileManager;

    private BluetoothLeBroadcastAssistant mService;
@@ -558,4 +573,30 @@ public class LocalBluetoothLeBroadcastAssistant implements LocalBluetoothProfile 
            }

        }

    }



    /** Checks the source connection status based on the provided broadcast receive state. */

    public static LocalBluetoothLeBroadcastSourceState getLocalSourceState(

            BluetoothLeBroadcastReceiveState state) {

        // Source is actively streaming

        if (state.getBisSyncState().stream()

                .anyMatch(

                        bitmap ->

                                (bitmap != BIS_SYNC_NOT_SYNC_TO_BIS

                                        && bitmap != BIS_SYNC_FAILED_SYNC_TO_BIG))) {

            return LocalBluetoothLeBroadcastSourceState.STREAMING;

        }

        // Wrong password is used for the source

        if (state.getPaSyncState() == BluetoothLeBroadcastReceiveState.PA_SYNC_STATE_SYNCHRONIZED

                && state.getBigEncryptionState()

                == BluetoothLeBroadcastReceiveState.BIG_ENCRYPTION_STATE_BAD_CODE) {

            return LocalBluetoothLeBroadcastSourceState.DECRYPTION_FAILED;

        }

        // Source in hysteresis mode

        if (!state.getSourceDevice().getAddress().equals(EMPTY_DEVICE_ADDRESS)) {

            // Referring to Broadcast Audio Scan Service 1.0

            // All zero address means no source on the sink device

            return LocalBluetoothLeBroadcastSourceState.PAUSED;

        }

        return LocalBluetoothLeBroadcastSourceState.UNKNOWN;

    }

}