Merge "Multiple USB support." into udc-dev (739b95b7) · Commits · e / os / android_frameworks_base

services/usb/java/com/android/server/usb/UsbAlsaDevice.java

+171 −85

Original line number	Diff line number	Diff line
		@@ -27,6 +27,8 @@ import android.util.Slog;
		import com.android.internal.util.dump.DualDumpOutputStream;
		import com.android.server.audio.AudioService;

		import java.util.Arrays;

		/**
		* Represents the ALSA specification, and attributes of an ALSA device.
		*/
		@@ -36,17 +38,21 @@ public final class UsbAlsaDevice {

		private final int mCardNum;
		private final int mDeviceNum;
		private final String mAlsaCardDeviceString;
		private final String mDeviceAddress;
		private final boolean mHasOutput;
		private final boolean mHasInput;

		private final boolean mIsInputHeadset;
		private final boolean mIsOutputHeadset;
		private final boolean mIsDock;
		// The following two constant will be used as index to access arrays.
		private static final int INPUT = 0;
		private static final int OUTPUT = 1;
		private static final int NUM_DIRECTIONS = 2;
		private static final String[] DIRECTION_STR = {"INPUT", "OUTPUT"};
		private final boolean[] mHasDevice = new boolean[NUM_DIRECTIONS];

		private boolean mSelected = false;
		private int mOutputState;
		private int mInputState;
		private final boolean[] mIsHeadset = new boolean[NUM_DIRECTIONS];
		private final boolean mIsDock;
		private final int[] mDeviceType = new int[NUM_DIRECTIONS];
		private boolean[] mIsSelected = new boolean[NUM_DIRECTIONS];
		private int[] mState = new int[NUM_DIRECTIONS];
		private UsbAlsaJackDetector mJackDetector;
		private IAudioService mAudioService;

		@@ -60,11 +66,13 @@ public final class UsbAlsaDevice {
		mCardNum = card;
		mDeviceNum = device;
		mDeviceAddress = deviceAddress;
		mHasOutput = hasOutput;
		mHasInput = hasInput;
		mIsInputHeadset = isInputHeadset;
		mIsOutputHeadset = isOutputHeadset;
		mHasDevice[OUTPUT] = hasOutput;
		mHasDevice[INPUT] = hasInput;
		mIsHeadset[INPUT] = isInputHeadset;
		mIsHeadset[OUTPUT] = isOutputHeadset;
		mIsDock = isDock;
		initDeviceType();
		mAlsaCardDeviceString = getAlsaCardDeviceString();
		}

		/**
		@@ -104,28 +112,28 @@ public final class UsbAlsaDevice {
		* @return true if the device supports output.
		*/
		public boolean hasOutput() {
		return mHasOutput;
		return mHasDevice[OUTPUT];
		}

		/**
		* @return true if the device supports input (recording).
		*/
		public boolean hasInput() {
		return mHasInput;
		return mHasDevice[INPUT];
		}

		/**
		* @return true if the device is a headset for purposes of input.
		* @return true if the device is a headset for purposes of output.
		*/
		public boolean isInputHeadset() {
		return mIsInputHeadset;
		public boolean isOutputHeadset() {
		return mIsHeadset[OUTPUT];
		}

		/**
		* @return true if the device is a headset for purposes of output.
		* @return true if the device is a headset for purposes of input.
		*/
		public boolean isOutputHeadset() {
		return mIsOutputHeadset;
		public boolean isInputHeadset() {
		return mIsHeadset[INPUT];
		}

		/**
		@@ -157,6 +165,9 @@ public final class UsbAlsaDevice {

		/** Begins a jack-detection thread. */
		private synchronized void startJackDetect() {
		if (mJackDetector != null) {
		return;
		}
		// If no jack detect capabilities exist, mJackDetector will be null.
		mJackDetector = UsbAlsaJackDetector.startJackDetect(this);
		}
		@@ -171,75 +182,152 @@ public final class UsbAlsaDevice {

		/** Start using this device as the selected USB Audio Device. */
		public synchronized void start() {
		mSelected = true;
		mInputState = 0;
		mOutputState = 0;
		startInput();
		startOutput();
		}

		/** Start using this device as the selected USB input device. */
		public synchronized void startInput() {
		startDevice(INPUT);
		}

		/** Start using this device as selected USB output device. */
		public synchronized void startOutput() {
		startDevice(OUTPUT);
		}

		private void startDevice(int direction) {
		if (mIsSelected[direction]) {
		return;
		}
		mIsSelected[direction] = true;
		mState[direction] = 0;
		startJackDetect();
		updateWiredDeviceConnectionState(true);
		updateWiredDeviceConnectionState(direction, true /enable/);
		}

		/** Stop using this device as the selected USB Audio Device. */
		public synchronized void stop() {
		stopJackDetect();
		updateWiredDeviceConnectionState(false);
		mSelected = false;
		stopInput();
		stopOutput();
		}

		/** Updates AudioService with the connection state of the alsaDevice.
		* Checks ALSA Jack state for inputs and outputs before reporting.
		*/
		public synchronized void updateWiredDeviceConnectionState(boolean enable) {
		if (!mSelected) {
		Slog.e(TAG, "updateWiredDeviceConnectionState on unselected AlsaDevice!");
		/** Stop using this device as the selected USB input device. */
		public synchronized void stopInput() {
		if (!mIsSelected[INPUT]) {
		return;
		}
		String alsaCardDeviceString = getAlsaCardDeviceString();
		if (alsaCardDeviceString == null) {
		if (!mIsSelected[OUTPUT]) {
		// Stop jack detection when both input and output are stopped
		stopJackDetect();
		}
		updateInputWiredDeviceConnectionState(false /enable/);
		mIsSelected[INPUT] = false;
		}

		/** Stop using this device as the selected USB output device. */
		public synchronized void stopOutput() {
		if (!mIsSelected[OUTPUT]) {
		return;
		}
		try {
		// Output Device
		if (mHasOutput) {
		int device = mIsDock ? AudioSystem.DEVICE_OUT_DGTL_DOCK_HEADSET
		: (mIsOutputHeadset
		? AudioSystem.DEVICE_OUT_USB_HEADSET
		: AudioSystem.DEVICE_OUT_USB_DEVICE);
		if (DEBUG) {
		Slog.d(TAG, "pre-call device:0x" + Integer.toHexString(device)
		+ " addr:" + alsaCardDeviceString
		+ " name:" + mDeviceName);
		if (!mIsSelected[INPUT]) {
		// Stop jack detection when both input and output are stopped
		stopJackDetect();
		}
		boolean connected = isOutputJackConnected();
		Slog.i(TAG, "OUTPUT JACK connected: " + connected);
		int outputState = (enable && connected) ? 1 : 0;
		if (outputState != mOutputState) {
		mOutputState = outputState;
		AudioDeviceAttributes attributes = new AudioDeviceAttributes(device,
		alsaCardDeviceString, mDeviceName);
		mAudioService.setWiredDeviceConnectionState(attributes, outputState, TAG);
		updateOutputWiredDeviceConnectionState(false /enable/);
		mIsSelected[OUTPUT] = false;
		}

		private void initDeviceType() {
		mDeviceType[INPUT] = mHasDevice[INPUT]
		? (mIsHeadset[INPUT] ? AudioSystem.DEVICE_IN_USB_HEADSET
		: AudioSystem.DEVICE_IN_USB_DEVICE)
		: AudioSystem.DEVICE_NONE;
		mDeviceType[OUTPUT] = mHasDevice[OUTPUT]
		? (mIsDock ? AudioSystem.DEVICE_OUT_DGTL_DOCK_HEADSET
		: (mIsHeadset[OUTPUT] ? AudioSystem.DEVICE_OUT_USB_HEADSET
		: AudioSystem.DEVICE_OUT_USB_DEVICE))
		: AudioSystem.DEVICE_NONE;
		}

		/**
		* @return the output device type that will be used to notify AudioService about device
		* connection. If there is no output on this device, {@link AudioSystem#DEVICE_NONE}
		* will be returned.
		*/
		public int getOutputDeviceType() {
		return mDeviceType[OUTPUT];
		}

		// Input Device
		if (mHasInput) {
		int device = mIsInputHeadset
		? AudioSystem.DEVICE_IN_USB_HEADSET
		: AudioSystem.DEVICE_IN_USB_DEVICE;
		boolean connected = isInputJackConnected();
		Slog.i(TAG, "INPUT JACK connected: " + connected);
		int inputState = (enable && connected) ? 1 : 0;
		if (inputState != mInputState) {
		mInputState = inputState;
		AudioDeviceAttributes attributes = new AudioDeviceAttributes(device,
		alsaCardDeviceString, mDeviceName);
		mAudioService.setWiredDeviceConnectionState(attributes, inputState, TAG);
		/**
		* @return the input device type that will be used to notify AudioService about device
		* connection. If there is no input on this device, {@link AudioSystem#DEVICE_NONE}
		* will be returned.
		*/
		public int getInputDeviceType() {
		return mDeviceType[INPUT];
		}

		private boolean updateWiredDeviceConnectionState(int direction, boolean enable) {
		if (!mIsSelected[direction]) {
		Slog.e(TAG, "Updating wired device connection state on unselected device");
		return false;
		}
		if (mDeviceType[direction] == AudioSystem.DEVICE_NONE) {
		Slog.d(TAG,
		"Unable to set device connection state as " + DIRECTION_STR[direction]
		+ " device type is none");
		return false;
		}
		if (mAlsaCardDeviceString == null) {
		Slog.w(TAG, "Failed to update " + DIRECTION_STR[direction] + " device connection "
		+ "state failed as alsa card device string is null");
		return false;
		}
		if (DEBUG) {
		Slog.d(TAG, "pre-call device:0x" + Integer.toHexString(mDeviceType[direction])
		+ " addr:" + mAlsaCardDeviceString
		+ " name:" + mDeviceName);
		}
		boolean connected = direction == INPUT ? isInputJackConnected() : isOutputJackConnected();
		Slog.i(TAG, DIRECTION_STR[direction] + " JACK connected: " + connected);
		int state = (enable && connected) ? 1 : 0;
		if (state != mState[direction]) {
		mState[direction] = state;
		AudioDeviceAttributes attributes = new AudioDeviceAttributes(
		mDeviceType[direction], mAlsaCardDeviceString, mDeviceName);
		try {
		mAudioService.setWiredDeviceConnectionState(attributes, state, TAG);
		} catch (RemoteException e) {
		Slog.e(TAG, "RemoteException in setWiredDeviceConnectionState");
		Slog.e(TAG, "RemoteException in setWiredDeviceConnectionState for "
		+ DIRECTION_STR[direction]);
		return false;
		}
		}
		return true;
		}

		/**
		* Notify AudioService about the input device connection state.
		*
		* @param enable true to notify the device as connected.
		* @return true only when it successfully notifies AudioService about the device
		* connection state.
		*/
		public synchronized boolean updateInputWiredDeviceConnectionState(boolean enable) {
		return updateWiredDeviceConnectionState(INPUT, enable);
		}

		/**
		* Notify AudioService about the output device connection state.
		*
		* @param enable true to notify the device as connected.
		* @return true only when it successfully notifies AudioService about the device
		* connection state.
		*/
		public synchronized boolean updateOutputWiredDeviceConnectionState(boolean enable) {
		return updateWiredDeviceConnectionState(OUTPUT, enable);
		}

		/**
		* @Override
		@@ -249,8 +337,8 @@ public final class UsbAlsaDevice {
		return "UsbAlsaDevice: [card: " + mCardNum
		+ ", device: " + mDeviceNum
		+ ", name: " + mDeviceName
		+ ", hasOutput: " + mHasOutput
		+ ", hasInput: " + mHasInput + "]";
		+ ", hasOutput: " + mHasDevice[OUTPUT]
		+ ", hasInput: " + mHasDevice[INPUT] + "]";
		}

		/**
		@@ -262,8 +350,8 @@ public final class UsbAlsaDevice {
		dump.write("card", UsbAlsaDeviceProto.CARD, mCardNum);
		dump.write("device", UsbAlsaDeviceProto.DEVICE, mDeviceNum);
		dump.write("name", UsbAlsaDeviceProto.NAME, mDeviceName);
		dump.write("has_output", UsbAlsaDeviceProto.HAS_PLAYBACK, mHasOutput);
		dump.write("has_input", UsbAlsaDeviceProto.HAS_CAPTURE, mHasInput);
		dump.write("has_output", UsbAlsaDeviceProto.HAS_PLAYBACK, mHasDevice[OUTPUT]);
		dump.write("has_input", UsbAlsaDeviceProto.HAS_CAPTURE, mHasDevice[INPUT]);
		dump.write("address", UsbAlsaDeviceProto.ADDRESS, mDeviceAddress);

		dump.end(token);
		@@ -294,10 +382,8 @@ public final class UsbAlsaDevice {
		UsbAlsaDevice other = (UsbAlsaDevice) obj;
		return (mCardNum == other.mCardNum
		&& mDeviceNum == other.mDeviceNum
		&& mHasOutput == other.mHasOutput
		&& mHasInput == other.mHasInput
		&& mIsInputHeadset == other.mIsInputHeadset
		&& mIsOutputHeadset == other.mIsOutputHeadset
		&& Arrays.equals(mHasDevice, other.mHasDevice)
		&& Arrays.equals(mIsHeadset, other.mIsHeadset)
		&& mIsDock == other.mIsDock);
		}

		@@ -310,10 +396,10 @@ public final class UsbAlsaDevice {
		int result = 1;
		result = prime * result + mCardNum;
		result = prime * result + mDeviceNum;
		result = prime * result + (mHasOutput ? 0 : 1);
		result = prime * result + (mHasInput ? 0 : 1);
		result = prime * result + (mIsInputHeadset ? 0 : 1);
		result = prime * result + (mIsOutputHeadset ? 0 : 1);
		result = prime * result + (mHasDevice[OUTPUT] ? 0 : 1);
		result = prime * result + (mHasDevice[INPUT] ? 0 : 1);
		result = prime * result + (mIsHeadset[INPUT] ? 0 : 1);
		result = prime * result + (mIsHeadset[OUTPUT] ? 0 : 1);
		result = prime * result + (mIsDock ? 0 : 1);

		return result;

services/usb/java/com/android/server/usb/UsbAlsaJackDetector.java

+2 −1

Original line number	Diff line number	Diff line
		@@ -81,7 +81,8 @@ public final class UsbAlsaJackDetector implements Runnable {
		if (mStopJackDetect) {
		return false;
		}
		mAlsaDevice.updateWiredDeviceConnectionState(true);
		mAlsaDevice.updateOutputWiredDeviceConnectionState(true);
		mAlsaDevice.updateInputWiredDeviceConnectionState(true);
		}
		return true;
		}

services/usb/java/com/android/server/usb/UsbAlsaManager.java

+108 −39

Original line number	Diff line number	Diff line
		@@ -20,12 +20,14 @@ import android.content.Context;
		import android.content.pm.PackageManager;
		import android.content.res.Resources;
		import android.hardware.usb.UsbDevice;
		import android.media.AudioManager;
		import android.media.IAudioService;
		import android.media.midi.MidiDeviceInfo;
		import android.os.Bundle;
		import android.os.FileObserver;
		import android.os.ServiceManager;
		import android.os.SystemClock;
		import android.os.SystemProperties;
		import android.provider.Settings;
		import android.service.usb.UsbAlsaManagerProto;
		import android.util.Slog;
		@@ -42,6 +44,7 @@ import java.util.Arrays;
		import java.util.HashMap;
		import java.util.HashSet;
		import java.util.List;
		import java.util.Stack;

		/**
		* UsbAlsaManager manages USB audio and MIDI devices.
		@@ -51,8 +54,9 @@ public final class UsbAlsaManager {
		private static final boolean DEBUG = false;

		// Flag to turn on/off multi-peripheral select mode
		// Set to true to have single-device-only mode
		private static final boolean mIsSingleMode = true;
		// Set to true to have multi-devices mode
		private static final boolean IS_MULTI_MODE = SystemProperties.getBoolean(
		"ro.audio.multi_usb_mode", false /def/);

		private static final String ALSA_DIRECTORY = "/dev/snd/";

		@@ -70,7 +74,11 @@ public final class UsbAlsaManager {
		// this is needed to map USB devices to ALSA Audio Devices, especially to remove an
		// ALSA device when we are notified that its associated USB device has been removed.
		private final ArrayList<UsbAlsaDevice> mAlsaDevices = new ArrayList<UsbAlsaDevice>();
		private UsbAlsaDevice mSelectedDevice;
		// A map from device type to attached devices. Given the audio framework only supports
		// single device connection per device type, only the last attached device will be
		// connected to audio framework. Once the last device is removed, previous device can
		// be connected to audio framework.
		private HashMap<Integer, Stack<UsbAlsaDevice>> mAttachedDevices = new HashMap<>();

		//
		// Device Denylist
		@@ -162,11 +170,6 @@ public final class UsbAlsaManager {
		Slog.d(TAG, "selectAlsaDevice() " + alsaDevice);
		}

		// This must be where an existing USB audio device is deselected.... (I think)
		if (mIsSingleMode && mSelectedDevice != null) {
		deselectAlsaDevice();
		}

		// FIXME Does not yet handle the case where the setting is changed
		// after device connection. Ideally we should handle the settings change
		// in SettingsObserver. Here we should log that a USB device is connected
		@@ -178,21 +181,18 @@ public final class UsbAlsaManager {
		return;
		}

		mSelectedDevice = alsaDevice;
		alsaDevice.start();

		if (DEBUG) {
		Slog.d(TAG, "selectAlsaDevice() - done.");
		}
		}

		private synchronized void deselectAlsaDevice() {
		private synchronized void deselectAlsaDevice(UsbAlsaDevice selectedDevice) {
		if (DEBUG) {
		Slog.d(TAG, "deselectAlsaDevice() mSelectedDevice " + mSelectedDevice);
		}
		if (mSelectedDevice != null) {
		mSelectedDevice.stop();
		mSelectedDevice = null;
		Slog.d(TAG, "deselectAlsaDevice() selectedDevice " + selectedDevice);
		}
		selectedDevice.stop();
		}

		private int getAlsaDeviceListIndexFor(String deviceAddress) {
		@@ -204,31 +204,85 @@ public final class UsbAlsaManager {
		return -1;
		}

		private UsbAlsaDevice removeAlsaDeviceFromList(String deviceAddress) {
		private void addDeviceToAttachedDevicesMap(int deviceType, UsbAlsaDevice device) {
		if (deviceType == AudioManager.DEVICE_NONE) {
		Slog.i(TAG, "Ignore caching device as the type is NONE, device=" + device);
		return;
		}
		Stack<UsbAlsaDevice> devices = mAttachedDevices.get(deviceType);
		if (devices == null) {
		mAttachedDevices.put(deviceType, new Stack<>());
		devices = mAttachedDevices.get(deviceType);
		}
		devices.push(device);
		}

		private void addAlsaDevice(UsbAlsaDevice device) {
		mAlsaDevices.add(0, device);
		addDeviceToAttachedDevicesMap(device.getInputDeviceType(), device);
		addDeviceToAttachedDevicesMap(device.getOutputDeviceType(), device);
		}

		private void removeDeviceFromAttachedDevicesMap(int deviceType, UsbAlsaDevice device) {
		Stack<UsbAlsaDevice> devices = mAttachedDevices.get(deviceType);
		if (devices == null) {
		return;
		}
		devices.remove(device);
		if (devices.isEmpty()) {
		mAttachedDevices.remove(deviceType);
		}
		}

		private UsbAlsaDevice removeAlsaDevice(String deviceAddress) {
		int index = getAlsaDeviceListIndexFor(deviceAddress);
		if (index > -1) {
		return mAlsaDevices.remove(index);
		UsbAlsaDevice device = mAlsaDevices.remove(index);
		removeDeviceFromAttachedDevicesMap(device.getOutputDeviceType(), device);
		removeDeviceFromAttachedDevicesMap(device.getInputDeviceType(), device);
		return device;
		} else {
		return null;
		}
		}

		/* package */ UsbAlsaDevice selectDefaultDevice() {
		private UsbAlsaDevice selectDefaultDevice(int deviceType) {
		if (DEBUG) {
		Slog.d(TAG, "selectDefaultDevice()");
		Slog.d(TAG, "selectDefaultDevice():" + deviceType);
		}

		if (mAlsaDevices.size() > 0) {
		UsbAlsaDevice alsaDevice = mAlsaDevices.get(0);
		if (DEBUG) {
		Slog.d(TAG, " alsaDevice:" + alsaDevice);
		Stack<UsbAlsaDevice> devices = mAttachedDevices.get(deviceType);
		if (devices == null \|\| devices.isEmpty()) {
		return null;
		}
		if (alsaDevice != null) {
		selectAlsaDevice(alsaDevice);
		UsbAlsaDevice alsaDevice = devices.peek();
		Slog.d(TAG, "select default device:" + alsaDevice);
		if (AudioManager.isInputDevice(deviceType)) {
		alsaDevice.startInput();
		} else {
		alsaDevice.startOutput();
		}
		return alsaDevice;
		}

		private void deselectCurrentDevice(int deviceType) {
		if (DEBUG) {
		Slog.d(TAG, "deselectCurrentDevice():" + deviceType);
		}
		if (deviceType == AudioManager.DEVICE_NONE) {
		return;
		}

		Stack<UsbAlsaDevice> devices = mAttachedDevices.get(deviceType);
		if (devices == null \|\| devices.isEmpty()) {
		return;
		}
		UsbAlsaDevice alsaDevice = devices.peek();
		Slog.d(TAG, "deselect current device:" + alsaDevice);
		if (AudioManager.isInputDevice(deviceType)) {
		alsaDevice.stopInput();
		} else {
		return null;
		alsaDevice.stopOutput();
		}
		}

		@@ -246,6 +300,7 @@ public final class UsbAlsaManager {
		AlsaCardsParser.AlsaCardRecord cardRec =
		mCardsParser.findCardNumFor(deviceAddress);
		if (cardRec == null) {
		Slog.e(TAG, "usbDeviceAdded(): cannot find sound card for " + deviceAddress);
		return;
		}

		@@ -275,13 +330,20 @@ public final class UsbAlsaManager {
		new UsbAlsaDevice(mAudioService, cardRec.getCardNum(), 0 /device/,
		deviceAddress, hasOutput, hasInput,
		isInputHeadset, isOutputHeadset, isDock);
		if (alsaDevice != null) {
		alsaDevice.setDeviceNameAndDescription(
		cardRec.getCardName(), cardRec.getCardDescription());
		mAlsaDevices.add(0, alsaDevice);
		selectAlsaDevice(alsaDevice);
		if (IS_MULTI_MODE) {
		deselectCurrentDevice(alsaDevice.getInputDeviceType());
		deselectCurrentDevice(alsaDevice.getOutputDeviceType());
		} else {
		// At single mode, the first device is the selected device.
		if (!mAlsaDevices.isEmpty()) {
		deselectAlsaDevice(mAlsaDevices.get(0));
		}
		}
		addAlsaDevice(alsaDevice);
		selectAlsaDevice(alsaDevice);
		}

		addMidiDevice(deviceAddress, usbDevice, parser, cardRec);

		@@ -346,12 +408,20 @@ public final class UsbAlsaManager {
		}

		// Audio
		UsbAlsaDevice alsaDevice = removeAlsaDeviceFromList(deviceAddress);
		UsbAlsaDevice alsaDevice = removeAlsaDevice(deviceAddress);
		Slog.i(TAG, "USB Audio Device Removed: " + alsaDevice);
		if (alsaDevice != null && alsaDevice == mSelectedDevice) {
		if (alsaDevice != null) {
		waitForAlsaDevice(alsaDevice.getCardNum(), false /isAdded/);
		deselectAlsaDevice();
		selectDefaultDevice(); // if there any external devices left, select one of them
		deselectAlsaDevice(alsaDevice);
		if (IS_MULTI_MODE) {
		selectDefaultDevice(alsaDevice.getOutputDeviceType());
		selectDefaultDevice(alsaDevice.getInputDeviceType());
		} else {
		// If there are any external devices left, select the latest attached one
		if (!mAlsaDevices.isEmpty() && mAlsaDevices.get(0) != null) {
		selectAlsaDevice(mAlsaDevices.get(0));
		}
		}
		}

		// MIDI
		@@ -362,7 +432,6 @@ public final class UsbAlsaManager {
		}

		logDevices("usbDeviceRemoved()");

		}

		/* package */ void setPeripheralMidiState(boolean enabled, int card, int device) {