MIDI: Power Boost when MIDI hardware sends data (e5f330f8) · Commits · e / os / android_frameworks_base

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

0 → 100644

+59 −0

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

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

			mPowerBoostSetter = new PowerBoostSetter();
	}		}

	private int calculateDefaultMidiProtocol() {		private int calculateDefaultMidiProtocol() {
	@@ -418,6 +425,15 @@ public final class UsbDirectMidiDevice implements Closeable {
	}		}
	outputReceivers[portFinal].send(convertedArray, 0,		outputReceivers[portFinal].send(convertedArray, 0,
	convertedArray.length, timestamp);		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) {		} catch (IOException e) {
	@@ -721,4 +737,10 @@ public final class UsbDirectMidiDevice implements Closeable {

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

			private PowerBoostSetter mPowerBoostSetter = null;

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

			mPowerBoostSetter = new PowerBoostSetter();
	}		}

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

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

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