Merge "BLE scan time optimization" (b6ba66bc) · Commits · e / os / android_packages_modules_Bluetooth

android/app/src/com/android/bluetooth/btservice/AdapterService.java

+17 −0

Original line number	Diff line number	Diff line
		@@ -4012,6 +4012,9 @@ public class AdapterService extends Service {
		private long mScanQuotaWindowMillis = DeviceConfigListener.DEFAULT_SCAN_QUOTA_WINDOW_MILLIS;
		@GuardedBy("mDeviceConfigLock")
		private long mScanTimeoutMillis = DeviceConfigListener.DEFAULT_SCAN_TIMEOUT_MILLIS;
		@GuardedBy("mDeviceConfigLock")
		private int mScanUpgradeDurationMillis =
		DeviceConfigListener.DEFAULT_SCAN_UPGRADE_DURATION_MILLIS;

		public @NonNull Predicate<String> getLocationDenylistName() {
		synchronized (mDeviceConfigLock) {
		@@ -4049,6 +4052,15 @@ public class AdapterService extends Service {
		}
		}

		/**
		* Returns scan upgrade duration in millis.
		*/
		public long getScanUpgradeDurationMillis() {
		synchronized (mDeviceConfigLock) {
		return mScanUpgradeDurationMillis;
		}
		}

		private final DeviceConfigListener mDeviceConfigListener = new DeviceConfigListener();

		private class DeviceConfigListener implements DeviceConfig.OnPropertiesChangedListener {
		@@ -4064,6 +4076,8 @@ public class AdapterService extends Service {
		"scan_quota_window_millis";
		private static final String SCAN_TIMEOUT_MILLIS =
		"scan_timeout_millis";
		private static final String SCAN_UPGRADE_DURATION_MILLIS =
		"scan_upgrade_duration_millis";

		/**
		* Default denylist which matches Eddystone and iBeacon payloads.
		@@ -4074,6 +4088,7 @@ public class AdapterService extends Service {
		private static final int DEFAULT_SCAN_QUOTA_COUNT = 5;
		private static final long DEFAULT_SCAN_QUOTA_WINDOW_MILLIS = 30 * SECOND_IN_MILLIS;
		private static final long DEFAULT_SCAN_TIMEOUT_MILLIS = 30 * MINUTE_IN_MILLIS;
		private static final int DEFAULT_SCAN_UPGRADE_DURATION_MILLIS = (int) SECOND_IN_MILLIS * 6;

		public void start() {
		DeviceConfig.addOnPropertiesChangedListener(DeviceConfig.NAMESPACE_BLUETOOTH,
		@@ -4099,6 +4114,8 @@ public class AdapterService extends Service {
		DEFAULT_SCAN_QUOTA_WINDOW_MILLIS);
		mScanTimeoutMillis = properties.getLong(SCAN_TIMEOUT_MILLIS,
		DEFAULT_SCAN_TIMEOUT_MILLIS);
		mScanUpgradeDurationMillis = properties.getInt(SCAN_UPGRADE_DURATION_MILLIS,
		DEFAULT_SCAN_UPGRADE_DURATION_MILLIS);
		}
		}
		}

android/app/src/com/android/bluetooth/gatt/AppScanStats.java

+16 −0

Original line number	Diff line number	Diff line
		@@ -54,6 +54,8 @@ import java.util.Objects;
		static final int BALANCED_WEIGHT = 25;
		static final int LOW_LATENCY_WEIGHT = 100;

		static final int LARGE_SCAN_TIME_GAP_MS = 24000;

		// ContextMap here is needed to grab Apps and Connections
		ContextMap mContextMap;

		@@ -119,6 +121,11 @@ import java.util.Objects;
		return AdapterService.getAdapterService().getScanTimeoutMillis();
		}

		// Scan mode upgrade duration after scanStart()
		static long getScanUpgradeDurationMillis() {
		return AdapterService.getAdapterService().getScanUpgradeDurationMillis();
		}

		public String appName;
		public WorkSource mWorkSource; // Used for BatteryStatsManager
		public final WorkSourceUtil mWorkSourceUtil; // Used for BluetoothStatsLog
		@@ -363,6 +370,15 @@ import java.util.Objects;
		return (SystemClock.elapsedRealtime() - mScanStartTime) > getScanTimeoutMillis();
		}

		synchronized boolean hasRecentScan() {
		if (!isScanning() \|\| mLastScans.isEmpty()) {
		return false;
		}
		LastScan lastScan = mLastScans.get(mLastScans.size() - 1);
		return ((SystemClock.elapsedRealtime() - lastScan.duration - lastScan.timestamp)
		< LARGE_SCAN_TIME_GAP_MS);
		}

		// This function truncates the app name for privacy reasons. Apps with
		// four part package names or more get truncated to three parts, and apps
		// with three part package names names get truncated to two. Apps with two

android/app/src/com/android/bluetooth/gatt/ScanClient.java

+36 −2

Original line number	Diff line number	Diff line
		@@ -32,7 +32,8 @@ import java.util.Objects;
		/* package */class ScanClient {
		public int scannerId;
		public ScanSettings settings;
		public ScanSettings passiveSettings;
		public int scanModeApp;
		public boolean started = false;
		public int appUid;
		public List<ScanFilter> filters;
		// App associated with the scan client died.
		@@ -59,7 +60,7 @@ import java.util.Objects;
		ScanClient(int scannerId, ScanSettings settings, List<ScanFilter> filters) {
		this.scannerId = scannerId;
		this.settings = settings;
		this.passiveSettings = null;
		this.scanModeApp = settings.getScanMode();
		this.filters = filters;
		this.appUid = Binder.getCallingUid();
		}
		@@ -80,4 +81,37 @@ import java.util.Objects;
		public int hashCode() {
		return Objects.hash(scannerId);
		}

		@Override
		public String toString() {
		StringBuilder sb = new StringBuilder();
		sb.append(" [ScanClient")
		.append(" scanModeApp ").append(scanModeApp)
		.append(" scanModeUsed ").append(settings.getScanMode());
		if (stats != null && stats.appName != null) {
		sb.append(" [appScanStats ").append(stats.appName).append("]");
		}
		sb.append("]");
		return sb.toString();
		}

		/**
		* Update scan settings with the new scan mode.
		* @param newScanMode
		* @return true if scan settings are updated, false otherwise.
		*/
		public boolean updateScanMode(int newScanMode) {
		if (settings.getScanMode() == newScanMode) {
		return false;
		}

		ScanSettings.Builder builder = new ScanSettings.Builder();
		settings = builder.setScanMode(newScanMode)
		.setCallbackType(settings.getCallbackType())
		.setScanResultType(settings.getScanResultType())
		.setReportDelay(settings.getReportDelayMillis())
		.setNumOfMatches(settings.getNumOfMatches())
		.build();
		return true;
		}
		}

android/app/src/com/android/bluetooth/gatt/ScanManager.java

+261 −84

File changed.

Preview size limit exceeded, changes collapsed.

framework/java/android/bluetooth/le/ScanSettings.java

+19 −0

Original line number	Diff line number	Diff line
		@@ -61,6 +61,23 @@ public final class ScanSettings implements Parcelable {
		@SystemApi
		public static final int SCAN_MODE_AMBIENT_DISCOVERY = 3;

		/**
		* Default Bluetooth LE scan mode when the screen is off.
		* This mode has the low duty cycle and long scan interval which results in the lowest
		* power consumption among all modes. It is for the framework internal use only.
		*
		* @hide
		*/
		public static final int SCAN_MODE_SCREEN_OFF = 4;

		/**
		* Balanced Bluetooth LE scan mode for foreground service when the screen is off.
		* It is for the framework internal use only.
		*
		* @hide
		*/
		public static final int SCAN_MODE_SCREEN_OFF_BALANCED = 5;

		/**
		* Trigger a callback for every Bluetooth advertisement found that matches the filter criteria.
		* If no filter is active, all advertisement packets are reported.
		@@ -292,6 +309,8 @@ public final class ScanSettings implements Parcelable {
		case SCAN_MODE_BALANCED:
		case SCAN_MODE_LOW_LATENCY:
		case SCAN_MODE_AMBIENT_DISCOVERY:
		case SCAN_MODE_SCREEN_OFF:
		case SCAN_MODE_SCREEN_OFF_BALANCED:
		mScanMode = scanMode;
		break;
		default: