Audio Device Enumeration API. (0e4242f9) · Commits · e / os / android_frameworks_base

media/java/android/media/AudioDevicesManager.java

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		/*
		* Copyright (C) 2015 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 android.media;

		import android.content.Context;
		import android.util.Slog;

		import java.util.ArrayList;
		import java.util.HashMap;
		import java.util.Iterator;
		import android.content.Context;

		/** @hide
		* API candidate
		*/
		public class AudioDevicesManager {
		private static String TAG = "AudioDevicesManager";
		private static boolean DEBUG = true;

		private AudioManager mAudioManager = null;
		private OnAmPortUpdateListener mPortListener = null;

		/*
		* Enum/Selection API
		*/
		public AudioDevicesManager(Context context) {
		mAudioManager = (AudioManager)context.getSystemService(Context.AUDIO_SERVICE);
		mPortListener = new OnAmPortUpdateListener();
		mAudioManager.registerAudioPortUpdateListener(mPortListener);
		}

		/** @hide
		* API candidate
		*/
		//TODO Merge this class into android.media.AudioDevice
		public class AudioDeviceInfo {
		private AudioDevicePort mPort = null;

		/** @hide */
		/* package */ AudioDeviceInfo(AudioDevicePort port) {
		mPort = port;
		}

		public int getId() { return mPort.handle().id(); }

		public String getName() { return mPort.name(); }

		public int getType() {
		return mPort.type();
		}

		public String getAddress() {
		return mPort.address();
		}

		public int getRole() { return mPort.role(); }

		public int[] getSampleRates() { return mPort.samplingRates(); }

		public int[] getChannelMasks() { return mPort.channelMasks(); }

		public int[] getChannelCounts() {
		int[] masks = getChannelMasks();
		int[] counts = new int[masks.length];
		for (int mask_index = 0; mask_index < masks.length; mask_index++) {
		counts[mask_index] = getRole() == AudioPort.ROLE_SINK
		? AudioFormat.channelCountFromOutChannelMask(masks[mask_index])
		: AudioFormat.channelCountFromInChannelMask(masks[mask_index]);
		}
		return counts;
		}

		/* The format IDs are in AudioFormat.java */
		public int[] getFormats() { return mPort.formats(); }

		public String toString() { return "" + getId() + " - " + getName(); }
		}

		/** @hide */
		public static final int LIST_DEVICES_OUTPUTS = 0x0001;
		/** @hide */
		public static final int LIST_DEVICES_INPUTS = 0x0002;
		/** @hide */
		public static final int LIST_DEVICES_BUILTIN = 0x0004;
		/** @hide */
		public static final int LIST_DEVICES_USB = 0x0008;
		// TODO implement the semantics for these.
		/** @hide */
		public static final int LIST_DEVICES_WIRED = 0x0010;
		/** @hide */
		public static final int LIST_DEVICES_UNWIRED = 0x0020;

		/** @hide */
		public static final int LIST_DEVICES_ALL = LIST_DEVICES_OUTPUTS \| LIST_DEVICES_INPUTS;

		private boolean checkFlags(AudioDevicePort port, int flags) {
		// Inputs / Outputs
		boolean passed =
		port.role() == AudioPort.ROLE_SINK && (flags & LIST_DEVICES_OUTPUTS) != 0 \|\|
		port.role() == AudioPort.ROLE_SOURCE && (flags & LIST_DEVICES_INPUTS) != 0;

		// USB
		if (passed && (flags & LIST_DEVICES_USB) != 0) {
		int role = port.role();
		int type = port.type();
		Slog.i(TAG, " role:" + role + " type:0x" + Integer.toHexString(type));
		passed =
		(role == AudioPort.ROLE_SINK && (type & AudioSystem.DEVICE_OUT_ALL_USB) != 0) \|\|
		(role == AudioPort.ROLE_SOURCE && (type & AudioSystem.DEVICE_IN_ALL_USB) != 0);
		}

		return passed;
		}

		/** @hide */
		public ArrayList<AudioDeviceInfo> listDevices(int flags) {
		Slog.i(TAG, "AudioManager.listDevices(" + Integer.toHexString(flags) + ")");

		//FIXME - Use ArrayList<AudioDevicePort> when mAudioManager.listAudioDevicePorts() is fixed.
		ArrayList<AudioPort> ports = new ArrayList<AudioPort>();
		int status = mAudioManager.listAudioDevicePorts(ports);

		Slog.i(TAG, " status:" + status + " numPorts:" + ports.size());

		ArrayList<AudioDeviceInfo> deviceList = new ArrayList<AudioDeviceInfo>();

		if (status == AudioManager.SUCCESS) {
		deviceList = new ArrayList<AudioDeviceInfo>();
		for (AudioPort port : ports) {
		if (/port instanceof AudioDevicePort &&/ checkFlags((AudioDevicePort)port, flags)) {
		deviceList.add(new AudioDeviceInfo((AudioDevicePort)port));
		}
		}
		}
		return deviceList;
		}

		private ArrayList<OnAudioDeviceConnectionListener> mDeviceConnectionListeners =
		new ArrayList<OnAudioDeviceConnectionListener>();

		private HashMap<Integer, AudioPort> mCurrentPortlist =
		new HashMap<Integer, AudioPort>();

		private ArrayList<AudioDeviceInfo> calcAddedDevices(AudioPort[] portList) {
		ArrayList<AudioDeviceInfo> addedDevices = new ArrayList<AudioDeviceInfo>();
		synchronized(mCurrentPortlist) {
		for(int portIndex = 0; portIndex < portList.length; portIndex++) {
		if (portList[portIndex] instanceof AudioDevicePort) {
		if (!mCurrentPortlist.containsKey(portList[portIndex].handle().id())) {
		addedDevices.add(new AudioDeviceInfo((AudioDevicePort)portList[portIndex]));
		}
		}
		}
		}
		return addedDevices;
		}

		private boolean hasPortId(AudioPort[] portList, int id) {
		for(int portIndex = 0; portIndex < portList.length; portIndex++) {
		if (portList[portIndex].handle().id() == id) {
		return true;
		}
		}
		return false;
		}

		private ArrayList<AudioDeviceInfo> calcRemovedDevices(AudioPort[] portList) {
		ArrayList<AudioDeviceInfo> removedDevices = new ArrayList<AudioDeviceInfo>();

		synchronized (mCurrentPortlist) {
		Iterator it = mCurrentPortlist.entrySet().iterator();
		while (it.hasNext()) {
		HashMap.Entry pairs = (HashMap.Entry)it.next();
		if (pairs.getValue() instanceof AudioDevicePort) {
		if (!hasPortId(portList, ((Integer)pairs.getKey()).intValue())) {
		removedDevices.add(new AudioDeviceInfo((AudioDevicePort)pairs.getValue()));
		}
		}
		}
		}
		return removedDevices;
		}

		private void buildCurrentDevicesList(AudioPort[] portList) {
		synchronized (mCurrentPortlist) {
		mCurrentPortlist.clear();
		for (int portIndex = 0; portIndex < portList.length; portIndex++) {
		if (portList[portIndex] instanceof AudioDevicePort) {
		mCurrentPortlist.put(portList[portIndex].handle().id(),
		(AudioDevicePort)portList[portIndex]);
		}
		}
		}
		}

		/** @hide */
		public void addDeviceConnectionListener(OnAudioDeviceConnectionListener listener) {
		synchronized (mDeviceConnectionListeners) {
		mDeviceConnectionListeners.add(listener);
		}
		}

		/** @hide */
		public void removeDeviceConnectionListener(OnAudioDeviceConnectionListener listener) {
		synchronized (mDeviceConnectionListeners) {
		mDeviceConnectionListeners.remove(listener);
		}
		}

		/**
		* @hide
		*/
		private class OnAmPortUpdateListener implements AudioManager.OnAudioPortUpdateListener {
		static final String TAG = "OnAmPortUpdateListener";
		public void onAudioPortListUpdate(AudioPort[] portList) {
		Slog.i(TAG, "onAudioPortListUpdate() " + portList.length + " ports.");
		ArrayList<AudioDeviceInfo> addedDevices = calcAddedDevices(portList);
		ArrayList<AudioDeviceInfo> removedDevices = calcRemovedDevices(portList);

		ArrayList<OnAudioDeviceConnectionListener> listeners = null;
		synchronized (mDeviceConnectionListeners) {
		listeners =
		new ArrayList<OnAudioDeviceConnectionListener>(mDeviceConnectionListeners);
		}

		// Connect
		if (addedDevices.size() != 0) {
		for (OnAudioDeviceConnectionListener listener : listeners) {
		listener.onConnect(addedDevices);
		}
		}

		// Disconnect?
		if (removedDevices.size() != 0) {
		for (OnAudioDeviceConnectionListener listener : listeners) {
		listener.onDisconnect(removedDevices);
		}
		}

		buildCurrentDevicesList(portList);
		}

		/**
		* Callback method called upon audio patch list update.
		* @param patchList the updated list of audio patches
		*/
		public void onAudioPatchListUpdate(AudioPatch[] patchList) {
		Slog.i(TAG, "onAudioPatchListUpdate() " + patchList.length + " patches.");
		}

		/**
		* Callback method called when the mediaserver dies
		*/
		public void onServiceDied() {
		Slog.i(TAG, "onServiceDied()");
		}
		}
		}

media/java/android/media/OnAudioDeviceConnectionListener.java

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		/*
		* Copyright (C) 2015 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 android.media;

		import java.util.ArrayList;

		/**
		* @hide
		* API candidate
		*/
		public abstract class OnAudioDeviceConnectionListener {
		public void onConnect(ArrayList<AudioDevicesManager.AudioDeviceInfo> devices) {}
		public void onDisconnect(ArrayList<AudioDevicesManager.AudioDeviceInfo> devices) {}
		}

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

+2 −2

File changed.

Contains only whitespace changes.