Add support for flushing MIDI all scheduled MIDI events on a port (b6f50d35) · Commits · e / os / android_frameworks_base

api/current.txt

+1 −0

Original line number	Diff line number	Diff line
		@@ -16847,6 +16847,7 @@ package android.media.midi {

		public abstract class MidiReceiver {
		ctor public MidiReceiver();
		method public void flush() throws java.io.IOException;
		method public int getMaxMessageSize();
		method public abstract void onReceive(byte[], int, int, long) throws java.io.IOException;
		method public void send(byte[], int, int) throws java.io.IOException;

api/system-current.txt

+1 −0

Original line number	Diff line number	Diff line
		@@ -18122,6 +18122,7 @@ package android.media.midi {

		public abstract class MidiReceiver {
		ctor public MidiReceiver();
		method public void flush() throws java.io.IOException;
		method public int getMaxMessageSize();
		method public abstract void onReceive(byte[], int, int, long) throws java.io.IOException;
		method public void send(byte[], int, int) throws java.io.IOException;

core/java/com/android/internal/midi/EventScheduler.java

+9 −2

Original line number	Diff line number	Diff line
		@@ -16,6 +16,7 @@

		package com.android.internal.midi;

		import java.util.Iterator;
		import java.util.SortedMap;
		import java.util.TreeMap;

		@@ -28,7 +29,7 @@ public class EventScheduler {
		private static final long NANOS_PER_MILLI = 1000000;

		private final Object mLock = new Object();
		private SortedMap<Long, FastEventQueue> mEventBuffer;
		volatile private SortedMap<Long, FastEventQueue> mEventBuffer;
		private FastEventQueue mEventPool = null;
		private int mMaxPoolSize = 200;
		private boolean mClosed;
		@@ -68,6 +69,7 @@ public class EventScheduler {
		mEventsRemoved++;
		SchedulableEvent event = mFirst;
		mFirst = event.mNext;
		event.mNext = null;
		return event;
		}

		@@ -87,7 +89,7 @@ public class EventScheduler {
		*/
		public static class SchedulableEvent {
		private long mTimestamp;
		private SchedulableEvent mNext = null;
		volatile private SchedulableEvent mNext = null;

		/**
		* @param timestamp
		@@ -235,6 +237,11 @@ public class EventScheduler {
		return event;
		}

		protected void flush() {
		// Replace our event buffer with a fresh empty one
		mEventBuffer = new TreeMap<Long, FastEventQueue>();
		}

		public void close() {
		synchronized (mLock) {
		mClosed = true;

core/java/com/android/internal/midi/MidiDispatcher.java

+7 −0

Original line number	Diff line number	Diff line
		@@ -83,4 +83,11 @@ public final class MidiDispatcher extends MidiReceiver {
		}
		}
		}

		@Override
		public void flush() throws IOException {
		for (MidiReceiver receiver : mReceivers) {
		receiver.flush();
		}
		}
		}

core/java/com/android/internal/midi/MidiEventScheduler.java

+7 −30

Original line number	Diff line number	Diff line
		@@ -28,16 +28,9 @@ public class MidiEventScheduler extends EventScheduler {
		// Maintain a pool of scheduled events to reduce memory allocation.
		// This pool increases performance by about 14%.
		private final static int POOL_EVENT_SIZE = 16;

		private final MidiReceiver[] mReceivers;
		private MidiReceiver mReceiver = new SchedulingReceiver();

		private class SchedulingReceiver extends MidiReceiver {
		private final int mPortNumber;

		public SchedulingReceiver(int portNumber) {
		mPortNumber = portNumber;
		}

		/**
		* Store these bytes in the EventScheduler to be delivered at the specified
		* time.
		@@ -47,14 +40,17 @@ public class MidiEventScheduler extends EventScheduler {
		throws IOException {
		MidiEvent event = createScheduledEvent(msg, offset, count, timestamp);
		if (event != null) {
		event.portNumber = mPortNumber;
		add(event);
		}
		}

		@Override
		public void flush() {
		MidiEventScheduler.this.flush();
		}
		}

		public static class MidiEvent extends SchedulableEvent {
		public int portNumber;
		public int count = 0;
		public byte[] data;

		@@ -80,17 +76,6 @@ public class MidiEventScheduler extends EventScheduler {
		}
		}

		public MidiEventScheduler() {
		this(0);
		}

		public MidiEventScheduler(int portCount) {
		mReceivers = new MidiReceiver[portCount];
		for (int i = 0; i < portCount; i++) {
		mReceivers[i] = new SchedulingReceiver(i);
		}
		}

		/**
		* Create an event that contains the message.
		*/
		@@ -132,15 +117,7 @@ public class MidiEventScheduler extends EventScheduler {
		* @return the MidiReceiver
		*/
		public MidiReceiver getReceiver() {
		return mReceivers[0];
		}

		/**
		* This MidiReceiver will write date to the scheduling buffer.
		* @return the MidiReceiver
		*/
		public MidiReceiver getReceiver(int portNumber) {
		return mReceivers[portNumber];
		return mReceiver;
		}

		}