Android/frameworks_base
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Expose gscan exponential backoff API

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Will be ignored until scan scheduling supports it

Change-Id: I9d392080e6ec8dfa9a998f6c04ec37f9c6dad0b2
This commit is contained in:
Mitchell Wills
2015-11-16 14:23:59 -08:00
parent 80ac37d033
commit 2564d9a4ef
2 changed files with 25 additions and 0 deletions
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3
api/system-current.txt
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@@ -21495,10 +21495,13 @@ package android.net.wifi {
method public void writeToParcel(android.os.Parcel, int);
field public int band;
field public android.net.wifi.WifiScanner.ChannelSpec[] channels;
field public int exponent;
field public int maxPeriodInMs;
field public int maxScansToCache;
field public int numBssidsPerScan;
field public int periodInMs;
field public int reportEvents;
field public int stepCount;
}
public static abstract interface WifiScanner.WifiChangeListener implements android.net.wifi.WifiScanner.ActionListener {

22
wifi/java/android/net/wifi/WifiScanner.java
View File

@@ -168,6 +168,22 @@ public class WifiScanner {
* to wake up at fixed interval
*/
public int maxScansToCache;
/**
* if maxPeriodInMs is non zero or different than period, then this bucket is
* an exponential backoff bucket and the scan period will grow exponentially
* as per formula: actual_period(N) = period ^ (N/(step_count+1))
* to a maximum period of max_period.
*/
public int maxPeriodInMs;
/**
* for exponential back off bucket: multiplier: new_period=old_period*exponent
*/
public int exponent;
/**
* for exponential back off bucket, number of scans performed at a given
* period and until the exponent is applied
*/
public int stepCount;
/** Implement the Parcelable interface {@hide} */
public int describeContents() {
@@ -181,6 +197,9 @@ public class WifiScanner {
dest.writeInt(reportEvents);
dest.writeInt(numBssidsPerScan);
dest.writeInt(maxScansToCache);
dest.writeInt(maxPeriodInMs);
dest.writeInt(exponent);
dest.writeInt(stepCount);
if (channels != null) {
dest.writeInt(channels.length);
@@ -206,6 +225,9 @@ public class WifiScanner {
settings.reportEvents = in.readInt();
settings.numBssidsPerScan = in.readInt();
settings.maxScansToCache = in.readInt();
settings.maxPeriodInMs = in.readInt();
settings.exponent = in.readInt();
settings.stepCount = in.readInt();
int num_channels = in.readInt();
settings.channels = new ChannelSpec[num_channels];
for (int i = 0; i < num_channels; i++) {