| /* |
| * Copyright (C) 2008 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.server; |
| |
| import static com.android.server.input.InputManagerService.SW_HEADPHONE_INSERT; |
| import static com.android.server.input.InputManagerService.SW_HEADPHONE_INSERT_BIT; |
| import static com.android.server.input.InputManagerService.SW_LINEOUT_INSERT; |
| import static com.android.server.input.InputManagerService.SW_LINEOUT_INSERT_BIT; |
| import static com.android.server.input.InputManagerService.SW_MICROPHONE_INSERT; |
| import static com.android.server.input.InputManagerService.SW_MICROPHONE_INSERT_BIT; |
| |
| import android.content.Context; |
| import android.media.AudioManager; |
| import android.os.Handler; |
| import android.os.Looper; |
| import android.os.Message; |
| import android.os.PowerManager; |
| import android.os.PowerManager.WakeLock; |
| import android.os.UEventObserver; |
| import android.util.Log; |
| import android.util.Pair; |
| import android.util.Slog; |
| import android.view.InputDevice; |
| |
| import com.android.internal.R; |
| import com.android.server.input.InputManagerService; |
| import com.android.server.input.InputManagerService.WiredAccessoryCallbacks; |
| |
| import java.io.File; |
| import java.io.FileNotFoundException; |
| import java.io.FileReader; |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Locale; |
| |
| /** |
| * <p>WiredAccessoryManager monitors for a wired headset on the main board or dock using |
| * both the InputManagerService notifyWiredAccessoryChanged interface and the UEventObserver |
| * subsystem. |
| */ |
| final class WiredAccessoryManager implements WiredAccessoryCallbacks { |
| private static final String TAG = WiredAccessoryManager.class.getSimpleName(); |
| private static final boolean LOG = false; |
| |
| private static final int BIT_HEADSET = (1 << 0); |
| private static final int BIT_HEADSET_NO_MIC = (1 << 1); |
| private static final int BIT_USB_HEADSET_ANLG = (1 << 2); |
| private static final int BIT_USB_HEADSET_DGTL = (1 << 3); |
| private static final int BIT_HDMI_AUDIO = (1 << 4); |
| private static final int BIT_LINEOUT = (1 << 5); |
| private static final int SUPPORTED_HEADSETS = (BIT_HEADSET | BIT_HEADSET_NO_MIC | |
| BIT_USB_HEADSET_ANLG | BIT_USB_HEADSET_DGTL | |
| BIT_HDMI_AUDIO | BIT_LINEOUT); |
| |
| private static final String NAME_H2W = "h2w"; |
| private static final String NAME_USB_AUDIO = "usb_audio"; |
| private static final String NAME_HDMI_AUDIO = "hdmi_audio"; |
| private static final String NAME_HDMI = "hdmi"; |
| |
| private static final int MSG_NEW_DEVICE_STATE = 1; |
| private static final int MSG_SYSTEM_READY = 2; |
| |
| private final Object mLock = new Object(); |
| |
| private final WakeLock mWakeLock; // held while there is a pending route change |
| private final AudioManager mAudioManager; |
| |
| private int mHeadsetState; |
| |
| private int mSwitchValues; |
| |
| private final WiredAccessoryObserver mObserver; |
| private final WiredAccessoryExtconObserver mExtconObserver; |
| private final InputManagerService mInputManager; |
| |
| private final boolean mUseDevInputEventForAudioJack; |
| |
| public WiredAccessoryManager(Context context, InputManagerService inputManager) { |
| PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE); |
| mWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WiredAccessoryManager"); |
| mWakeLock.setReferenceCounted(false); |
| mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE); |
| mInputManager = inputManager; |
| |
| mUseDevInputEventForAudioJack = |
| context.getResources().getBoolean(R.bool.config_useDevInputEventForAudioJack); |
| |
| mExtconObserver = new WiredAccessoryExtconObserver(); |
| mObserver = new WiredAccessoryObserver(); |
| } |
| |
| private void onSystemReady() { |
| if (mUseDevInputEventForAudioJack) { |
| int switchValues = 0; |
| if (mInputManager.getSwitchState(-1, InputDevice.SOURCE_ANY, SW_HEADPHONE_INSERT) |
| == 1) { |
| switchValues |= SW_HEADPHONE_INSERT_BIT; |
| } |
| if (mInputManager.getSwitchState(-1, InputDevice.SOURCE_ANY, SW_MICROPHONE_INSERT) |
| == 1) { |
| switchValues |= SW_MICROPHONE_INSERT_BIT; |
| } |
| if (mInputManager.getSwitchState(-1, InputDevice.SOURCE_ANY, SW_LINEOUT_INSERT) == 1) { |
| switchValues |= SW_LINEOUT_INSERT_BIT; |
| } |
| notifyWiredAccessoryChanged(0, switchValues, |
| SW_HEADPHONE_INSERT_BIT | SW_MICROPHONE_INSERT_BIT | SW_LINEOUT_INSERT_BIT); |
| } |
| |
| |
| if (ExtconUEventObserver.extconExists()) { |
| if (mUseDevInputEventForAudioJack) { |
| Log.w(TAG, "Both input event and extcon are used for audio jack," |
| + " please just choose one."); |
| } |
| mExtconObserver.init(); |
| } else { |
| mObserver.init(); |
| } |
| } |
| |
| @Override |
| public void notifyWiredAccessoryChanged(long whenNanos, int switchValues, int switchMask) { |
| if (LOG) { |
| Slog.v(TAG, "notifyWiredAccessoryChanged: when=" + whenNanos |
| + " bits=" + switchCodeToString(switchValues, switchMask) |
| + " mask=" + Integer.toHexString(switchMask)); |
| } |
| |
| synchronized (mLock) { |
| int headset; |
| mSwitchValues = (mSwitchValues & ~switchMask) | switchValues; |
| switch (mSwitchValues & |
| (SW_HEADPHONE_INSERT_BIT | SW_MICROPHONE_INSERT_BIT | SW_LINEOUT_INSERT_BIT)) { |
| case 0: |
| headset = 0; |
| break; |
| |
| case SW_HEADPHONE_INSERT_BIT: |
| headset = BIT_HEADSET_NO_MIC; |
| break; |
| |
| case SW_LINEOUT_INSERT_BIT: |
| headset = BIT_LINEOUT; |
| break; |
| |
| case SW_HEADPHONE_INSERT_BIT | SW_MICROPHONE_INSERT_BIT: |
| headset = BIT_HEADSET; |
| break; |
| |
| case SW_MICROPHONE_INSERT_BIT: |
| headset = BIT_HEADSET; |
| break; |
| |
| default: |
| headset = 0; |
| break; |
| } |
| |
| updateLocked(NAME_H2W, |
| (mHeadsetState & ~(BIT_HEADSET | BIT_HEADSET_NO_MIC | BIT_LINEOUT)) | headset); |
| } |
| } |
| |
| @Override |
| public void systemReady() { |
| synchronized (mLock) { |
| mWakeLock.acquire(); |
| |
| Message msg = mHandler.obtainMessage(MSG_SYSTEM_READY, 0, 0, null); |
| mHandler.sendMessage(msg); |
| } |
| } |
| |
| /** |
| * Compare the existing headset state with the new state and pass along accordingly. Note |
| * that this only supports a single headset at a time. Inserting both a usb and jacked headset |
| * results in support for the last one plugged in. Similarly, unplugging either is seen as |
| * unplugging all. |
| * |
| * @param newName One of the NAME_xxx variables defined above. |
| * @param newState 0 or one of the BIT_xxx variables defined above. |
| */ |
| private void updateLocked(String newName, int newState) { |
| // Retain only relevant bits |
| int headsetState = newState & SUPPORTED_HEADSETS; |
| int usb_headset_anlg = headsetState & BIT_USB_HEADSET_ANLG; |
| int usb_headset_dgtl = headsetState & BIT_USB_HEADSET_DGTL; |
| int h2w_headset = headsetState & (BIT_HEADSET | BIT_HEADSET_NO_MIC | BIT_LINEOUT); |
| boolean h2wStateChange = true; |
| boolean usbStateChange = true; |
| if (LOG) { |
| Slog.v(TAG, "newName=" + newName |
| + " newState=" + newState |
| + " headsetState=" + headsetState |
| + " prev headsetState=" + mHeadsetState); |
| } |
| |
| if (mHeadsetState == headsetState) { |
| Log.e(TAG, "No state change."); |
| return; |
| } |
| |
| // reject all suspect transitions: only accept state changes from: |
| // - a: 0 headset to 1 headset |
| // - b: 1 headset to 0 headset |
| if (h2w_headset == (BIT_HEADSET | BIT_HEADSET_NO_MIC | BIT_LINEOUT)) { |
| Log.e(TAG, "Invalid combination, unsetting h2w flag"); |
| h2wStateChange = false; |
| } |
| // - c: 0 usb headset to 1 usb headset |
| // - d: 1 usb headset to 0 usb headset |
| if (usb_headset_anlg == BIT_USB_HEADSET_ANLG && usb_headset_dgtl == BIT_USB_HEADSET_DGTL) { |
| Log.e(TAG, "Invalid combination, unsetting usb flag"); |
| usbStateChange = false; |
| } |
| if (!h2wStateChange && !usbStateChange) { |
| Log.e(TAG, "invalid transition, returning ..."); |
| return; |
| } |
| |
| mWakeLock.acquire(); |
| |
| Log.i(TAG, "MSG_NEW_DEVICE_STATE"); |
| Message msg = mHandler.obtainMessage(MSG_NEW_DEVICE_STATE, headsetState, |
| mHeadsetState, ""); |
| mHandler.sendMessage(msg); |
| |
| mHeadsetState = headsetState; |
| } |
| |
| private final Handler mHandler = new Handler(Looper.myLooper(), null, true) { |
| @Override |
| public void handleMessage(Message msg) { |
| switch (msg.what) { |
| case MSG_NEW_DEVICE_STATE: |
| setDevicesState(msg.arg1, msg.arg2, (String) msg.obj); |
| mWakeLock.release(); |
| break; |
| case MSG_SYSTEM_READY: |
| onSystemReady(); |
| mWakeLock.release(); |
| break; |
| } |
| } |
| }; |
| |
| private void setDevicesState( |
| int headsetState, int prevHeadsetState, String headsetName) { |
| synchronized (mLock) { |
| int allHeadsets = SUPPORTED_HEADSETS; |
| for (int curHeadset = 1; allHeadsets != 0; curHeadset <<= 1) { |
| if ((curHeadset & allHeadsets) != 0) { |
| setDeviceStateLocked(curHeadset, headsetState, prevHeadsetState, headsetName); |
| allHeadsets &= ~curHeadset; |
| } |
| } |
| } |
| } |
| |
| private void setDeviceStateLocked(int headset, |
| int headsetState, int prevHeadsetState, String headsetName) { |
| if ((headsetState & headset) != (prevHeadsetState & headset)) { |
| int outDevice = 0; |
| int inDevice = 0; |
| int state; |
| |
| if ((headsetState & headset) != 0) { |
| state = 1; |
| } else { |
| state = 0; |
| } |
| |
| if (headset == BIT_HEADSET) { |
| outDevice = AudioManager.DEVICE_OUT_WIRED_HEADSET; |
| inDevice = AudioManager.DEVICE_IN_WIRED_HEADSET; |
| } else if (headset == BIT_HEADSET_NO_MIC) { |
| outDevice = AudioManager.DEVICE_OUT_WIRED_HEADPHONE; |
| } else if (headset == BIT_LINEOUT) { |
| outDevice = AudioManager.DEVICE_OUT_LINE; |
| } else if (headset == BIT_USB_HEADSET_ANLG) { |
| outDevice = AudioManager.DEVICE_OUT_ANLG_DOCK_HEADSET; |
| } else if (headset == BIT_USB_HEADSET_DGTL) { |
| outDevice = AudioManager.DEVICE_OUT_DGTL_DOCK_HEADSET; |
| } else if (headset == BIT_HDMI_AUDIO) { |
| outDevice = AudioManager.DEVICE_OUT_HDMI; |
| } else { |
| Slog.e(TAG, "setDeviceState() invalid headset type: " + headset); |
| return; |
| } |
| |
| if (LOG) { |
| Slog.v(TAG, "headsetName: " + headsetName + |
| (state == 1 ? " connected" : " disconnected")); |
| } |
| |
| if (outDevice != 0) { |
| mAudioManager.setWiredDeviceConnectionState(outDevice, state, "", headsetName); |
| } |
| if (inDevice != 0) { |
| mAudioManager.setWiredDeviceConnectionState(inDevice, state, "", headsetName); |
| } |
| } |
| } |
| |
| private String switchCodeToString(int switchValues, int switchMask) { |
| StringBuffer sb = new StringBuffer(); |
| if ((switchMask & SW_HEADPHONE_INSERT_BIT) != 0 && |
| (switchValues & SW_HEADPHONE_INSERT_BIT) != 0) { |
| sb.append("SW_HEADPHONE_INSERT "); |
| } |
| if ((switchMask & SW_MICROPHONE_INSERT_BIT) != 0 && |
| (switchValues & SW_MICROPHONE_INSERT_BIT) != 0) { |
| sb.append("SW_MICROPHONE_INSERT"); |
| } |
| return sb.toString(); |
| } |
| |
| class WiredAccessoryObserver extends UEventObserver { |
| private final List<UEventInfo> mUEventInfo; |
| |
| public WiredAccessoryObserver() { |
| mUEventInfo = makeObservedUEventList(); |
| } |
| |
| void init() { |
| synchronized (mLock) { |
| if (LOG) Slog.v(TAG, "init()"); |
| char[] buffer = new char[1024]; |
| |
| for (int i = 0; i < mUEventInfo.size(); ++i) { |
| UEventInfo uei = mUEventInfo.get(i); |
| try { |
| int curState; |
| FileReader file = new FileReader(uei.getSwitchStatePath()); |
| int len = file.read(buffer, 0, 1024); |
| file.close(); |
| curState = Integer.parseInt((new String(buffer, 0, len)).trim()); |
| |
| if (curState > 0) { |
| updateStateLocked(uei.getDevPath(), uei.getDevName(), curState); |
| } |
| } catch (FileNotFoundException e) { |
| Slog.w(TAG, uei.getSwitchStatePath() + |
| " not found while attempting to determine initial switch state"); |
| } catch (Exception e) { |
| Slog.e(TAG, "Error while attempting to determine initial switch state for " |
| + uei.getDevName(), e); |
| } |
| } |
| } |
| |
| // At any given time accessories could be inserted |
| // one on the board, one on the dock and one on HDMI: |
| // observe three UEVENTs |
| for (int i = 0; i < mUEventInfo.size(); ++i) { |
| UEventInfo uei = mUEventInfo.get(i); |
| startObserving("DEVPATH=" + uei.getDevPath()); |
| } |
| } |
| |
| private List<UEventInfo> makeObservedUEventList() { |
| List<UEventInfo> retVal = new ArrayList<UEventInfo>(); |
| UEventInfo uei; |
| |
| // Monitor h2w |
| if (!mUseDevInputEventForAudioJack) { |
| uei = new UEventInfo(NAME_H2W, BIT_HEADSET, BIT_HEADSET_NO_MIC, BIT_LINEOUT); |
| if (uei.checkSwitchExists()) { |
| retVal.add(uei); |
| } else { |
| Slog.w(TAG, "This kernel does not have wired headset support"); |
| } |
| } |
| |
| // Monitor USB |
| uei = new UEventInfo(NAME_USB_AUDIO, BIT_USB_HEADSET_ANLG, BIT_USB_HEADSET_DGTL, 0); |
| if (uei.checkSwitchExists()) { |
| retVal.add(uei); |
| } else { |
| Slog.w(TAG, "This kernel does not have usb audio support"); |
| } |
| |
| // Monitor HDMI |
| // |
| // If the kernel has support for the "hdmi_audio" switch, use that. It will be |
| // signalled only when the HDMI driver has a video mode configured, and the downstream |
| // sink indicates support for audio in its EDID. |
| // |
| // If the kernel does not have an "hdmi_audio" switch, just fall back on the older |
| // "hdmi" switch instead. |
| uei = new UEventInfo(NAME_HDMI_AUDIO, BIT_HDMI_AUDIO, 0, 0); |
| if (uei.checkSwitchExists()) { |
| retVal.add(uei); |
| } else { |
| uei = new UEventInfo(NAME_HDMI, BIT_HDMI_AUDIO, 0, 0); |
| if (uei.checkSwitchExists()) { |
| retVal.add(uei); |
| } else { |
| Slog.w(TAG, "This kernel does not have HDMI audio support"); |
| } |
| } |
| |
| return retVal; |
| } |
| |
| @Override |
| public void onUEvent(UEventObserver.UEvent event) { |
| if (LOG) Slog.v(TAG, "Headset UEVENT: " + event.toString()); |
| |
| try { |
| String devPath = event.get("DEVPATH"); |
| String name = event.get("SWITCH_NAME"); |
| int state = Integer.parseInt(event.get("SWITCH_STATE")); |
| synchronized (mLock) { |
| updateStateLocked(devPath, name, state); |
| } |
| } catch (NumberFormatException e) { |
| Slog.e(TAG, "Could not parse switch state from event " + event); |
| } |
| } |
| |
| private void updateStateLocked(String devPath, String name, int state) { |
| for (int i = 0; i < mUEventInfo.size(); ++i) { |
| UEventInfo uei = mUEventInfo.get(i); |
| if (devPath.equals(uei.getDevPath())) { |
| updateLocked(name, uei.computeNewHeadsetState(mHeadsetState, state)); |
| return; |
| } |
| } |
| } |
| |
| private final class UEventInfo { |
| private final String mDevName; |
| private final int mState1Bits; |
| private final int mState2Bits; |
| private final int mStateNbits; |
| |
| public UEventInfo(String devName, int state1Bits, int state2Bits, int stateNbits) { |
| mDevName = devName; |
| mState1Bits = state1Bits; |
| mState2Bits = state2Bits; |
| mStateNbits = stateNbits; |
| } |
| |
| public String getDevName() { |
| return mDevName; |
| } |
| |
| public String getDevPath() { |
| return String.format(Locale.US, "/devices/virtual/switch/%s", mDevName); |
| } |
| |
| public String getSwitchStatePath() { |
| return String.format(Locale.US, "/sys/class/switch/%s/state", mDevName); |
| } |
| |
| public boolean checkSwitchExists() { |
| File f = new File(getSwitchStatePath()); |
| return f.exists(); |
| } |
| |
| public int computeNewHeadsetState(int headsetState, int switchState) { |
| int preserveMask = ~(mState1Bits | mState2Bits | mStateNbits); |
| int setBits = ((switchState == 1) ? mState1Bits : |
| ((switchState == 2) ? mState2Bits : |
| ((switchState == mStateNbits) ? mStateNbits : 0))); |
| |
| return ((headsetState & preserveMask) | setBits); |
| } |
| } |
| } |
| |
| private class WiredAccessoryExtconObserver extends ExtconStateObserver<Pair<Integer, Integer>> { |
| private final List<ExtconInfo> mExtconInfos; |
| |
| WiredAccessoryExtconObserver() { |
| mExtconInfos = ExtconInfo.getExtconInfos(".*audio.*"); |
| |
| } |
| |
| private void init() { |
| for (ExtconInfo extconInfo : mExtconInfos) { |
| Pair<Integer, Integer> state = null; |
| try { |
| state = parseStateFromFile(extconInfo); |
| } catch (FileNotFoundException e) { |
| Slog.w(TAG, extconInfo.getStatePath() |
| + " not found while attempting to determine initial state", e); |
| } catch (IOException e) { |
| Slog.e( |
| TAG, |
| "Error reading " + extconInfo.getStatePath() |
| + " while attempting to determine initial state", |
| e); |
| } |
| if (state != null) { |
| updateState(extconInfo, extconInfo.getName(), state); |
| } |
| if (LOG) Slog.d(TAG, "observing " + extconInfo.getName()); |
| startObserving(extconInfo); |
| } |
| |
| } |
| |
| @Override |
| public Pair<Integer, Integer> parseState(ExtconInfo extconInfo, String status) { |
| if (LOG) Slog.v(TAG, "status " + status); |
| int []maskAndState = {0,0}; |
| // extcon event state changes from kernel4.9 |
| // new state will be like STATE=MICROPHONE=1\nHEADPHONE=0 |
| updateBit(maskAndState, BIT_HEADSET_NO_MIC, status, "HEADPHONE") ; |
| updateBit(maskAndState, BIT_HEADSET, status,"MICROPHONE") ; |
| updateBit(maskAndState, BIT_HDMI_AUDIO, status,"HDMI") ; |
| updateBit(maskAndState, BIT_LINEOUT, status,"LINE-OUT") ; |
| if (LOG) Slog.v(TAG, "mask " + maskAndState[0] + " state " + maskAndState[1]); |
| return Pair.create(maskAndState[0],maskAndState[1]); |
| } |
| |
| @Override |
| public void updateState(ExtconInfo extconInfo, String name, |
| Pair<Integer, Integer> maskAndState) { |
| synchronized (mLock) { |
| int mask = maskAndState.first; |
| int state = maskAndState.second; |
| updateLocked(name, mHeadsetState & ~(mask & ~state) | (mask & state)); |
| return; |
| } |
| } |
| } |
| |
| /** |
| * Updates the mask bit at {@code position} to 1 and the state bit at {@code position} to true |
| * if {@code name=1} or false if {}@code name=0} is contained in {@code state}. |
| */ |
| private static void updateBit(int[] maskAndState, int position, String state, String name) { |
| maskAndState[0] |= position; |
| if (state.contains(name + "=1")) { |
| maskAndState[0] |= position; |
| maskAndState[1] |= position; |
| } else if (state.contains(name + "=0")) { |
| maskAndState[0] |= position; |
| maskAndState[1] &= ~position; |
| } |
| } |
| } |