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Commit ae8fd753 authored by Rahul Sabnis's avatar Rahul Sabnis
Browse files

Set a floor value for BLE Batch Scan report delay of 5000ms 

Tag: #feature
Bug: 167340030
Test: Manual
Change-Id: I4ef99a9562f1447a2ccee42a344384a38a487c19
parent 6ae1f1e2

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

+23 −6
Original line number Diff line number Diff line
@@ -20,6 +20,7 @@ import android.annotation.SystemApi; 
import android.bluetooth.BluetoothDevice;

import android.os.Parcel;

import android.os.Parcelable;

import android.provider.DeviceConfig;



/**

 * Bluetooth LE scan settings are passed to {@link BluetoothLeScanner#startScan} to define the
@@ -141,6 +142,12 @@ public final class ScanSettings implements Parcelable { 
     */

    public static final int PHY_LE_ALL_SUPPORTED = 255;



    /**

     * The default floor value for report delays greater than 0 in

     * {@link Builder#setReportDelay(long)}.

     */

    private static final long DEFAULT_REPORT_DELAY_FLOOR = 5000;



    // Bluetooth LE scan mode.

    private int mScanMode;
@@ -345,18 +352,28 @@ public final class ScanSettings implements Parcelable { 
        }



        /**

         * Set report delay timestamp for Bluetooth LE scan.

         * Set report delay timestamp for Bluetooth LE scan. If set to 0, you will be notified of

         * scan results immediately. If > 0, scan results are queued up and delivered after the

         * requested delay or 5000 milliseconds (whichever is higher). Note scan results may be

         * delivered sooner if the internal buffers fill up.

         *

         * @param reportDelayMillis Delay of report in milliseconds. Set to 0 to be notified of

         * results immediately. Values > 0 causes the scan results to be queued up and delivered

         * after the requested delay or when the internal buffers fill up.

         * @throws IllegalArgumentException If {@code reportDelayMillis} < 0.

         * @param reportDelayMillis         how frequently scan results should be delivered in

         *                                  milliseconds

         * @throws IllegalArgumentException if {@code reportDelayMillis} < 0

         */

        public Builder setReportDelay(long reportDelayMillis) {

            if (reportDelayMillis < 0) {

                throw new IllegalArgumentException("reportDelay must be > 0");

            }



            long floor = DeviceConfig.getLong(DeviceConfig.NAMESPACE_BLUETOOTH, "report_delay",

                    DEFAULT_REPORT_DELAY_FLOOR);



            if (reportDelayMillis > 0 && reportDelayMillis < floor) {

                mReportDelayMillis = floor;

            } else {

                mReportDelayMillis = reportDelayMillis;

            }

            return this;

        }