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when vervbose logging, keep track of a list of ScanResults per AP

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Change-Id: Ib8f797de360f11eb9914a6aa44d418e1d0571973
This commit is contained in:
vandwalle
2014-05-22 13:09:20 -07:00
parent 27ed053b76
commit 653cfeeb0a
4 changed files with 105 additions and 12 deletions
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104
src/com/android/settings/wifi/AccessPoint.java
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@@ -28,9 +28,13 @@ import android.net.wifi.WifiManager;
import android.os.Bundle;
import android.preference.Preference;
import android.util.Log;
import android.util.LruCache;
import android.view.View;
import android.widget.ImageView;
import java.util.Map;
class AccessPoint extends Preference {
static final String TAG = "Settings.AccessPoint";
@@ -74,6 +78,21 @@ class AccessPoint extends Preference {
private WifiInfo mInfo;
private DetailedState mState;
private static final int VISIBILITY_MAX_AGE_IN_MILLI = 1000000;
private static final int VISIBILITY_OUTDATED_AGE_IN_MILLI = 20000;
private static final int LOWER_FREQ_24GHZ = 2400;
private static final int HIGHER_FREQ_24GHZ = 2500;
private static final int LOWER_FREQ_5GHZ = 4900;
private static final int HIGHER_FREQ_5GHZ = 5900;
private static final int SECOND_TO_MILLI = 1000;
/** Experiemental: we should be able to show the user the list of BSSIDs and bands
* for that SSID.
* For now this data is used only with Verbose Logging so as to show the band and number
* of BSSIDs on which that network is seen.
*/
public LruCache<String, ScanResult> scanResultCache;
static int getSecurity(WifiConfiguration config) {
if (config.allowedKeyManagement.get(KeyMgmt.WPA_PSK)) {
return SECURITY_PSK;
@@ -201,6 +220,9 @@ class AccessPoint extends Preference {
pskType = getPskType(result);
mRssi = result.level;
mScanResult = result;
if (result.seen > mSeen) {
mSeen = result.seen;
}
}
@Override
@@ -267,6 +289,13 @@ class AccessPoint extends Preference {
if (result.seen > mSeen) {
mSeen = result.seen;
}
if (WifiSettings.mVerboseLogging > 0) {
if (scanResultCache == null) {
scanResultCache = new LruCache<String, ScanResult>(32);
}
scanResultCache.put(result.BSSID, result);
}
if (ssid.equals(result.SSID) && security == getSecurity(result)) {
if (WifiManager.compareSignalLevel(result.level, mRssi) > 0) {
int oldLevel = getLevel();
@@ -340,25 +369,84 @@ class AccessPoint extends Preference {
/** visibility status of the WifiConfiguration
* @return RSSI and update indicator
* TODO: indicate both 2.4 and 5GHz RSSI as well as number of results
* TODO: use a string formatter
* ["rssi 5Ghz", "num results on 5GHz" / "rssi 5Ghz", "num results on 5GHz"]
* For instance [-40,5/-30,2]
*/
private String getVisibilityStatus() {
String visibility ;
StringBuilder visibility = new StringBuilder();
long now = System.currentTimeMillis();
long age = (now - mSeen);
if (age < 1000000) {
if (age < VISIBILITY_MAX_AGE_IN_MILLI) {
//show age in seconds, in the form xx
visibility = Long.toString((age / 1000) % 1000);
visibility.append(Long.toString((age / SECOND_TO_MILLI) % SECOND_TO_MILLI));
} else {
//not seen for more than 1000 seconds
visibility = "!";
visibility.append("!");
}
if (mRssi != Integer.MAX_VALUE) {
visibility = visibility + ", " + Integer.toString(mRssi);
if (scanResultCache != null) {
int rssi5 = WifiConfiguration.INVALID_RSSI;
int rssi24 = WifiConfiguration.INVALID_RSSI;
int num5 = 0;
int num24 = 0;
Map<String, ScanResult> list = scanResultCache.snapshot();
for (ScanResult result : list.values()) {
if (result.seen == 0)
continue;
if (result.frequency > LOWER_FREQ_5GHZ
&& result.frequency < HIGHER_FREQ_5GHZ) {
//strictly speaking: [4915, 5825]
//number of known BSSID on 5GHz band
num5 = num5 + 1;
} else if (result.frequency > LOWER_FREQ_24GHZ
&& result.frequency < HIGHER_FREQ_24GHZ) {
//strictly speaking: [2412, 2482]
//number of known BSSID on 2.4Ghz band
num24 = num24 + 1;
}
//ignore results seen, older than 20 seconds
if (now - result.seen > VISIBILITY_OUTDATED_AGE_IN_MILLI) continue;
if (result.frequency > LOWER_FREQ_5GHZ
&&result.frequency < HIGHER_FREQ_5GHZ) {
if (result.level > rssi5) {
rssi5 = result.level;
}
} else if (result.frequency > LOWER_FREQ_24GHZ
&& result.frequency < HIGHER_FREQ_24GHZ) {
if (result.level > rssi24) {
rssi24 = result.level;
}
}
}
visibility.append(" [");
if (num24 > 0 || rssi24 > WifiConfiguration.INVALID_RSSI) {
visibility.append(Integer.toString(rssi24));
visibility.append(",");
visibility.append(Integer.toString(num24));
}
visibility.append(";");
if (num5 > 0 || rssi5 > WifiConfiguration.INVALID_RSSI) {
visibility.append(Integer.toString(rssi5));
visibility.append(",");
visibility.append(Integer.toString(num5));
}
visibility.append("]");
} else {
if (mRssi != Integer.MAX_VALUE) {
visibility.append(", ");
visibility.append(Integer.toString(mRssi));
if (mScanResult != null) {
visibility.append(", ");
visibility.append(Integer.toString(mScanResult.frequency));
}
}
}
return visibility;
return visibility.toString();
}
/** Updates the title and summary; may indirectly call notifyChanged() */