New Additions to WifiScanner APIs (c4f389e1) · Commits · e / os / android_frameworks_base

wifi/java/android/net/wifi/WifiScanner.java

+185 −9

Original line number	Diff line number	Diff line
		@@ -158,6 +158,11 @@ public class WifiScanner {
		public int reportEvents;
		/** defines number of bssids to cache from each scan */
		public int numBssidsPerScan;
		/**
		* defines number of scans to cache; use it with REPORT_EVENT_AFTER_BUFFER_FULL
		* to wake up at fixed interval
		*/
		public int maxScansToCache;

		/** Implement the Parcelable interface {@hide} */
		public int describeContents() {
		@@ -170,6 +175,7 @@ public class WifiScanner {
		dest.writeInt(periodInMs);
		dest.writeInt(reportEvents);
		dest.writeInt(numBssidsPerScan);
		dest.writeInt(maxScansToCache);

		if (channels != null) {
		dest.writeInt(channels.length);
		@@ -194,6 +200,7 @@ public class WifiScanner {
		settings.periodInMs = in.readInt();
		settings.reportEvents = in.readInt();
		settings.numBssidsPerScan = in.readInt();
		settings.maxScansToCache = in.readInt();
		int num_channels = in.readInt();
		settings.channels = new ChannelSpec[num_channels];
		for (int i = 0; i < num_channels; i++) {
		@@ -215,8 +222,143 @@ public class WifiScanner {

		}

		/** @hide */
		/**
		* all the information garnered from a single scan
		*/
		public static class ScanData implements Parcelable {
		/** scan identifier */
		private int mId;
		/** additional information about scan
		* 0 => no special issues encountered in the scan
		* non-zero => scan was truncated, so results may not be complete
		*/
		private int mFlags;
		/** all scan results discovered in this scan, sorted by timestamp in ascending order */
		private ScanResult mResults[];

		ScanData() {}

		public ScanData(int id, int flags, ScanResult[] results) {
		mId = id;
		mFlags = flags;
		mResults = results;
		}

		public ScanData(ScanData s) {
		mId = s.mId;
		mFlags = s.mFlags;
		mResults = new ScanResult[s.mResults.length];
		for (int i = 0; i < s.mResults.length; i++) {
		ScanResult result = s.mResults[i];
		WifiSsid wifiSsid = WifiSsid.createFromAsciiEncoded(result.SSID);
		ScanResult newResult = new ScanResult(wifiSsid, result.BSSID, "",
		result.level, result.frequency, result.timestamp);
		mResults[i] = newResult;
		}
		}

		public int getId() {
		return mId;
		}

		public int getFlags() {
		return mFlags;
		}

		public ScanResult[] getResults() {
		return mResults;
		}

		/** Implement the Parcelable interface {@hide} */
		public int describeContents() {
		return 0;
		}

		/** Implement the Parcelable interface {@hide} */
		public void writeToParcel(Parcel dest, int flags) {
		if (mResults != null) {
		dest.writeInt(mId);
		dest.writeInt(mFlags);
		dest.writeInt(mResults.length);
		for (int i = 0; i < mResults.length; i++) {
		ScanResult result = mResults[i];
		result.writeToParcel(dest, flags);
		}
		} else {
		dest.writeInt(0);
		}
		}

		/** Implement the Parcelable interface {@hide} */
		public static final Creator<ScanData> CREATOR =
		new Creator<ScanData>() {
		public ScanData createFromParcel(Parcel in) {
		int id = in.readInt();
		int flags = in.readInt();
		int n = in.readInt();
		ScanResult results[] = new ScanResult[n];
		for (int i = 0; i < n; i++) {
		results[i] = ScanResult.CREATOR.createFromParcel(in);
		}
		return new ScanData(id, flags, results);
		}

		public ScanData[] newArray(int size) {
		return new ScanData[size];
		}
		};
		}

		public static class ParcelableScanData implements Parcelable {

		public ScanData mResults[];

		public ParcelableScanData(ScanData[] results) {
		mResults = results;
		}

		public ScanData[] getResults() {
		return mResults;
		}

		/** Implement the Parcelable interface {@hide} */
		public int describeContents() {
		return 0;
		}

		/** Implement the Parcelable interface {@hide} */
		public void writeToParcel(Parcel dest, int flags) {
		if (mResults != null) {
		dest.writeInt(mResults.length);
		for (int i = 0; i < mResults.length; i++) {
		ScanData result = mResults[i];
		result.writeToParcel(dest, flags);
		}
		} else {
		dest.writeInt(0);
		}
		}

		/** Implement the Parcelable interface {@hide} */
		public static final Creator<ParcelableScanData> CREATOR =
		new Creator<ParcelableScanData>() {
		public ParcelableScanData createFromParcel(Parcel in) {
		int n = in.readInt();
		ScanData results[] = new ScanData[n];
		for (int i = 0; i < n; i++) {
		results[i] = ScanData.CREATOR.createFromParcel(in);
		}
		return new ParcelableScanData(results);
		}

		public ParcelableScanData[] newArray(int size) {
		return new ParcelableScanData[size];
		}
		};
		}

		public static class ParcelableScanResults implements Parcelable {

		public ScanResult mResults[];

		public ParcelableScanResults(ScanResult[] results) {
		@@ -264,7 +406,8 @@ public class WifiScanner {
		}

		/**
		* interface to get scan events on; specify this on {@link #startBackgroundScan}
		* interface to get scan events on; specify this on {@link #startBackgroundScan} or
		* {@link #startScan}
		*/
		public interface ScanListener extends ActionListener {
		/**
		@@ -273,9 +416,9 @@ public class WifiScanner {
		*/
		public void onPeriodChanged(int periodInMs);
		/**
		* reports results retrieved from background scan
		* reports results retrieved from background scan and single shot scans
		*/
		public void onResults(ScanResult[] results);
		public void onResults(ScanData[] results);
		/**
		* reports full scan result for each access point found in scan
		*/
		@@ -303,13 +446,36 @@ public class WifiScanner {
		sAsyncChannel.sendMessage(CMD_STOP_BACKGROUND_SCAN, 0, removeListener(listener));
		}
		/**
		* retrieves currently available scan results
		* reports currently available scan results on appropriate listeners
		* @return true if all scan results were reported correctly
		*/
		public ScanResult[] getScanResults() {
		public boolean getScanResults() {
		validateChannel();
		Message reply = sAsyncChannel.sendMessageSynchronously(CMD_GET_SCAN_RESULTS, 0);
		ScanResult[] results = (ScanResult[]) reply.obj;
		return results;
		return reply.what == CMD_OP_SUCCEEDED;
		}

		/**
		* starts a single scan and reports results asynchronously
		* @param settings specifies various parameters for the scan; for more information look at
		* {@link ScanSettings}
		* @param listener specifies the object to report events to. This object is also treated as a
		* key for this scan, and must also be specified to cancel the scan. Multiple
		* scans should also not share this object.
		*/
		public void startScan(ScanSettings settings, ScanListener listener) {
		validateChannel();
		sAsyncChannel.sendMessage(CMD_START_SINGLE_SCAN, 0, putListener(listener), settings);
		}

		/**
		* stops an ongoing single shot scan; only useful after {@link #startScan} if onResults()
		* hasn't been called on the listener, ignored otherwise
		* @param listener
		*/
		public void stopScan(ScanListener listener) {
		validateChannel();
		sAsyncChannel.sendMessage(CMD_STOP_SINGLE_SCAN, 0, removeListener(listener));
		}

		/** specifies information about an access point of interest */
		@@ -597,6 +763,12 @@ public class WifiScanner {
		public static final int CMD_PERIOD_CHANGED = BASE + 19;
		/** @hide */
		public static final int CMD_FULL_SCAN_RESULT = BASE + 20;
		/** @hide */
		public static final int CMD_START_SINGLE_SCAN = BASE + 21;
		/** @hide */
		public static final int CMD_STOP_SINGLE_SCAN = BASE + 22;
		/** @hide */
		public static final int CMD_SINGLE_SCAN_COMPLETED = BASE + 23;

		private Context mContext;
		private IWifiScanner mService;
		@@ -804,7 +976,7 @@ public class WifiScanner {
		break;
		case CMD_SCAN_RESULT :
		((ScanListener) listener).onResults(
		((ParcelableScanResults) msg.obj).getResults());
		((ParcelableScanData) msg.obj).getResults());
		return;
		case CMD_FULL_SCAN_RESULT :
		ScanResult result = (ScanResult) msg.obj;
		@@ -829,6 +1001,10 @@ public class WifiScanner {
		((WifiChangeListener) listener).onQuiescence(
		((ParcelableScanResults) msg.obj).getResults());
		return;
		case CMD_SINGLE_SCAN_COMPLETED:
		Log.d(TAG, "removing listener for single scan");
		removeListener(msg.arg2);
		break;
		default:
		if (DBG) Log.d(TAG, "Ignoring message " + msg.what);
		return;