Merge "MIDI: Power Boost when MIDI hardware sends data" (4b7bb8bb) · Commits · e / os / android_frameworks_base

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

0 → 100644

+59 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2022 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.usb;

		import android.os.PowerManagerInternal;
		import android.util.Log;

		import com.android.server.LocalServices;

		import java.time.Instant;

		/**
		* Sends power boost events to the power manager.
		*/
		public class PowerBoostSetter {
		private static final String TAG = "PowerBoostSetter";
		// Set power boost timeout to 15 seconds
		private static final int POWER_BOOST_TIMEOUT_MS = 15 * 1000;

		PowerManagerInternal mPowerManagerInternal = null;
		Instant mPreviousTimeout = null;

		PowerBoostSetter() {
		mPowerManagerInternal = LocalServices.getService(PowerManagerInternal.class);
		}

		/**
		* Boosts the CPU clock frequency as if the screen is touched
		*/
		public void boostPower() {
		if (mPowerManagerInternal == null) {
		mPowerManagerInternal = LocalServices.getService(PowerManagerInternal.class);
		}

		if (mPowerManagerInternal == null) {
		Log.w(TAG, "PowerManagerInternal null");
		} else if ((mPreviousTimeout == null) \|\| Instant.now().isAfter(
		mPreviousTimeout.plusMillis(POWER_BOOST_TIMEOUT_MS / 2))) {
		// Only boost if the previous timeout is at least halfway done
		mPreviousTimeout = Instant.now();
		mPowerManagerInternal.setPowerBoost(PowerManagerInternal.BOOST_INTERACTION,
		POWER_BOOST_TIMEOUT_MS);
		}
		}
		}

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

+22 −0

Original line number	Diff line number	Diff line
		@@ -98,6 +98,11 @@ public final class UsbDirectMidiDevice implements Closeable {

		private UsbMidiPacketConverter mUsbMidiPacketConverter;

		private PowerBoostSetter mPowerBoostSetter = null;

		private static final byte MESSAGE_TYPE_MIDI_1_CHANNEL_VOICE = 0x02;
		private static final byte MESSAGE_TYPE_MIDI_2_CHANNEL_VOICE = 0x04;

		private final MidiDeviceServer.Callback mCallback = new MidiDeviceServer.Callback() {
		@Override
		public void onDeviceStatusChanged(MidiDeviceServer server, MidiDeviceStatus status) {
		@@ -251,6 +256,8 @@ public final class UsbDirectMidiDevice implements Closeable {
		for (int port = 0; port < numOutputs; port++) {
		mMidiInputPortReceivers[port] = new InputReceiverProxy();
		}

		mPowerBoostSetter = new PowerBoostSetter();
		}

		private int calculateDefaultMidiProtocol() {
		@@ -418,6 +425,15 @@ public final class UsbDirectMidiDevice implements Closeable {
		}
		outputReceivers[portFinal].send(convertedArray, 0,
		convertedArray.length, timestamp);

		// Boost power if there seems to be a voice message.
		// For legacy devices, boost when message is more than size 1.
		// For UMP devices, boost for channel voice messages.
		if ((mPowerBoostSetter != null && convertedArray.length > 1)
		&& (!mIsUniversalMidiDevice
		\|\| isChannelVoiceMessage(convertedArray))) {
		mPowerBoostSetter.boostPower();
		}
		}
		}
		} catch (IOException e) {
		@@ -721,4 +737,10 @@ public final class UsbDirectMidiDevice implements Closeable {

		dump.end(token);
		}

		private boolean isChannelVoiceMessage(byte[] umpMessage) {
		byte messageType = (byte) ((umpMessage[0] >> 4) & 0x0f);
		return messageType == MESSAGE_TYPE_MIDI_1_CHANNEL_VOICE
		\|\| messageType == MESSAGE_TYPE_MIDI_2_CHANNEL_VOICE;
		}
		}

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

+9 −0

Original line number	Diff line number	Diff line
		@@ -77,6 +77,8 @@ public final class UsbMidiDevice implements Closeable {
		// only accessed from JNI code
		private int mPipeFD = -1;

		private PowerBoostSetter mPowerBoostSetter = null;

		private final MidiDeviceServer.Callback mCallback = new MidiDeviceServer.Callback() {
		@Override
		public void onDeviceStatusChanged(MidiDeviceServer server, MidiDeviceStatus status) {
		@@ -167,6 +169,8 @@ public final class UsbMidiDevice implements Closeable {
		for (int port = 0; port < numOutputs; port++) {
		mMidiInputPortReceivers[port] = new InputReceiverProxy();
		}

		mPowerBoostSetter = new PowerBoostSetter();
		}

		private boolean openLocked() {
		@@ -240,6 +244,11 @@ public final class UsbMidiDevice implements Closeable {

		int count = mInputStreams[index].read(buffer);
		outputReceivers[index].send(buffer, 0, count, timestamp);

		// If messages are more than size 1, boost power.
		if (mPowerBoostSetter != null && count > 1) {
		mPowerBoostSetter.boostPower();
		}
		}
		}
		}