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EventHub: Add support for excluding devices from being opened by as a keyboard.

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This will be used to avoid unnecessarily listening to data from sensors
that function as event devices.

Signed-off-by: Mike Lockwood <lockwood@android.com>
This commit is contained in:
Mike Lockwood
2009-07-16 11:11:18 -04:00
parent d0c0e46a44
commit 1d9dfc5dcf
4 changed files with 111 additions and 17 deletions
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60
services/java/com/android/server/KeyInputQueue.java
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@@ -18,11 +18,13 @@ package com.android.server;
import android.content.Context;
import android.content.res.Configuration;
import android.os.Environment;
import android.os.LatencyTimer;
import android.os.PowerManager;
import android.os.SystemClock;
import android.util.Log;
import android.util.SparseArray;
import android.util.Xml;
import android.view.Display;
import android.view.KeyEvent;
import android.view.MotionEvent;
@@ -30,9 +32,16 @@ import android.view.RawInputEvent;
import android.view.Surface;
import android.view.WindowManagerPolicy;
import com.android.internal.util.XmlUtils;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
@@ -42,6 +51,8 @@ public abstract class KeyInputQueue {
static final boolean DEBUG_VIRTUAL_KEYS = false;
private static final String EXCLUDED_DEVICES_PATH = "etc/excluded-input-devices.xml";
final SparseArray<InputDevice> mDevices = new SparseArray<InputDevice>();
final ArrayList<VirtualKey> mVirtualKeys = new ArrayList<VirtualKey>();
@@ -177,12 +188,8 @@ public abstract class KeyInputQueue {
hitBottom = miny + ((bottom*maxy-miny)/dh);
}
}
KeyInputQueue(Context context) {
if (MEASURE_LATENCY) {
lt = new LatencyTimer(100, 1000);
}
private void readVirtualKeys() {
try {
FileInputStream fis = new FileInputStream(
"/sys/board_properties/virtualkeys.synaptics-rmi-touchscreen");
@@ -223,6 +230,47 @@ public abstract class KeyInputQueue {
} catch (IOException e) {
Log.w(TAG, "Error reading virtual keys", e);
}
}
private void readExcludedDevices() {
// Read partner-provided list of excluded input devices
XmlPullParser parser = null;
// Environment.getRootDirectory() is a fancy way of saying ANDROID_ROOT or "/system".
File confFile = new File(Environment.getRootDirectory(), EXCLUDED_DEVICES_PATH);
FileReader confreader = null;
try {
confreader = new FileReader(confFile);
parser = Xml.newPullParser();
parser.setInput(confreader);
XmlUtils.beginDocument(parser, "devices");
while (true) {
XmlUtils.nextElement(parser);
if (!"device".equals(parser.getName())) {
break;
}
String name = parser.getAttributeValue(null, "name");
if (name != null) {
Log.d(TAG, "addExcludedDevice " + name);
addExcludedDevice(name);
}
}
} catch (FileNotFoundException e) {
// It's ok if the file does not exist.
} catch (Exception e) {
Log.e(TAG, "Exception while parsing '" + confFile.getAbsolutePath() + "'", e);
} finally {
try { if (confreader != null) confreader.close(); } catch (IOException e) { }
}
}
KeyInputQueue(Context context) {
if (MEASURE_LATENCY) {
lt = new LatencyTimer(100, 1000);
}
readVirtualKeys();
readExcludedDevices();
PowerManager pm = (PowerManager)context.getSystemService(
Context.POWER_SERVICE);
@@ -280,6 +328,7 @@ public abstract class KeyInputQueue {
public static native String getDeviceName(int deviceId);
public static native int getDeviceClasses(int deviceId);
public static native void addExcludedDevice(String deviceName);
public static native boolean getAbsoluteInfo(int deviceId, int axis,
InputDevice.AbsoluteInfo outInfo);
public static native int getSwitchState(int sw);
@@ -305,6 +354,7 @@ public abstract class KeyInputQueue {
Thread mThread = new Thread("InputDeviceReader") {
public void run() {
Log.d(TAG, "InputDeviceReader.run()");
android.os.Process.setThreadPriority(
android.os.Process.THREAD_PRIORITY_URGENT_DISPLAY);