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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
package org.mozilla.gecko.media;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.media.MediaFormat;
import android.os.DeadObjectException;
import android.os.IBinder;
import android.os.RemoteException;
import android.util.Log;
import java.util.LinkedList;
import java.util.List;
import java.util.NoSuchElementException;
import org.mozilla.gecko.GeckoAppShell;
import org.mozilla.gecko.TelemetryUtils;
import org.mozilla.gecko.gfx.GeckoSurface;
public final class RemoteManager implements IBinder.DeathRecipient {
private static final String LOGTAG = "GeckoRemoteManager";
private static final boolean DEBUG = false;
private static RemoteManager sRemoteManager = null;
public static synchronized RemoteManager getInstance() {
if (sRemoteManager == null) {
sRemoteManager = new RemoteManager();
}
sRemoteManager.init();
return sRemoteManager;
}
private List<CodecProxy> mCodecs = new LinkedList<CodecProxy>();
private List<IMediaDrmBridge> mDrmBridges = new LinkedList<IMediaDrmBridge>();
private volatile IMediaManager mRemote;
private final class RemoteConnection implements ServiceConnection {
@Override
public void onServiceConnected(final ComponentName name, final IBinder service) {
if (DEBUG) Log.d(LOGTAG, "service connected");
try {
service.linkToDeath(RemoteManager.this, 0);
} catch (final RemoteException e) {
e.printStackTrace();
}
synchronized (this) {
mRemote = IMediaManager.Stub.asInterface(service);
notify();
}
}
@Override
public void onServiceDisconnected(final ComponentName name) {
if (DEBUG) Log.d(LOGTAG, "service disconnected");
unlink();
}
private boolean connect() {
final Context appCtxt = GeckoAppShell.getApplicationContext();
appCtxt.bindService(
new Intent(appCtxt, MediaManager.class),
mConnection,
Context.BIND_AUTO_CREATE | Context.BIND_IMPORTANT);
waitConnect();
return mRemote != null;
}
// Wait up to 5s.
private synchronized void waitConnect() {
int waitCount = 0;
while (mRemote == null && waitCount < 5) {
try {
wait(1000);
waitCount++;
} catch (final InterruptedException e) {
if (DEBUG) {
e.printStackTrace();
}
}
}
if (DEBUG) {
Log.d(
LOGTAG,
"wait ~" + waitCount + "s for connection: " + (mRemote == null ? "fail" : "ok"));
}
}
private synchronized void waitDisconnect() {
while (mRemote != null) {
try {
wait(1000);
} catch (final InterruptedException e) {
if (DEBUG) {
e.printStackTrace();
}
}
}
}
private synchronized void unlink() {
if (mRemote == null) {
return;
}
try {
mRemote.asBinder().unlinkToDeath(RemoteManager.this, 0);
} catch (final NoSuchElementException e) {
Log.w(LOGTAG, "death recipient already released");
}
mRemote = null;
notify();
}
}
RemoteConnection mConnection = new RemoteConnection();
private synchronized boolean init() {
if (mRemote != null) {
return true;
}
if (DEBUG) Log.d(LOGTAG, "init remote manager " + this);
return mConnection.connect();
}
public synchronized CodecProxy createCodec(
final boolean isEncoder,
final MediaFormat format,
final GeckoSurface surface,
final CodecProxy.Callbacks callbacks,
final String drmStubId) {
if (mRemote == null) {
if (DEBUG) Log.d(LOGTAG, "createCodec failed due to not initialize");
return null;
}
try {
final ICodec remote = mRemote.createCodec();
final CodecProxy proxy =
CodecProxy.createCodecProxy(isEncoder, format, surface, callbacks, drmStubId);
if (proxy.init(remote)) {
mCodecs.add(proxy);
return proxy;
} else {
return null;
}
} catch (final RemoteException e) {
e.printStackTrace();
return null;
}
}
public synchronized IMediaDrmBridge createRemoteMediaDrmBridge(
final String keySystem, final String stubId) {
if (mRemote == null) {
if (DEBUG) Log.d(LOGTAG, "createRemoteMediaDrmBridge failed due to not initialize");
return null;
}
try {
final IMediaDrmBridge remoteBridge = mRemote.createRemoteMediaDrmBridge(keySystem, stubId);
mDrmBridges.add(remoteBridge);
return remoteBridge;
} catch (final RemoteException e) {
Log.e(LOGTAG, "Got exception during createRemoteMediaDrmBridge().", e);
return null;
}
}
@Override
public void binderDied() {
Log.e(LOGTAG, "remote codec is dead");
TelemetryUtils.addToHistogram("MEDIA_DECODING_PROCESS_CRASH", 1);
handleRemoteDeath();
}
private synchronized void handleRemoteDeath() {
mConnection.waitDisconnect();
if (init() && recoverRemoteCodec()) {
notifyError(false);
} else {
notifyError(true);
}
}
private synchronized void notifyError(final boolean fatal) {
for (final CodecProxy proxy : mCodecs) {
proxy.reportError(fatal);
}
}
private synchronized boolean recoverRemoteCodec() {
if (DEBUG) Log.d(LOGTAG, "recover codec");
boolean ok = true;
try {
for (final CodecProxy proxy : mCodecs) {
ok &= proxy.init(mRemote.createCodec());
}
return ok;
} catch (final RemoteException e) {
return false;
}
}
public void releaseCodec(final CodecProxy proxy) throws DeadObjectException, RemoteException {
if (mRemote == null) {
if (DEBUG) Log.d(LOGTAG, "releaseCodec called but not initialized yet");
return;
}
proxy.deinit();
synchronized (this) {
if (mCodecs.remove(proxy)) {
try {
mRemote.endRequest();
releaseIfNeeded();
} catch (final RemoteException | NullPointerException e) {
Log.e(LOGTAG, "fail to report remote codec disconnection");
}
}
}
}
private void releaseIfNeeded() {
if (!mCodecs.isEmpty() || !mDrmBridges.isEmpty()) {
return;
}
if (DEBUG) Log.d(LOGTAG, "release remote manager " + this);
mConnection.unlink();
final Context appCtxt = GeckoAppShell.getApplicationContext();
appCtxt.unbindService(mConnection);
}
public void onRemoteMediaDrmBridgeReleased(final IMediaDrmBridge remote) {
if (!mDrmBridges.contains(remote)) {
Log.e(LOGTAG, "Try to release unknown remote MediaDrm bridge: " + remote);
return;
}
synchronized (this) {
if (mDrmBridges.remove(remote)) {
try {
mRemote.endRequest();
releaseIfNeeded();
} catch (final RemoteException | NullPointerException e) {
Log.e(LOGTAG, "Fail to report remote DRM bridge disconnection");
}
}
}
}
} // RemoteManager
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