/*
* Copyright (C) 2014 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.tv;
import android.content.Context;
import android.graphics.Rect;
import android.net.Uri;
import android.os.Bundle;
import android.os.IBinder;
import android.os.Looper;
import android.os.Message;
import android.util.Log;
import android.view.InputChannel;
import android.view.InputEvent;
import android.view.InputEventReceiver;
import android.view.Surface;
import com.android.internal.os.HandlerCaller;
import com.android.internal.os.SomeArgs;
/**
* Implements the internal ITvInputSession interface to convert incoming calls on to it back to
* calls on the public TvInputSession interface, scheduling them on the main thread of the process.
*
* @hide
*/
public class ITvInputSessionWrapper extends ITvInputSession.Stub implements HandlerCaller.Callback {
private static final String TAG = "TvInputSessionWrapper";
private static final int MESSAGE_HANDLING_DURATION_THRESHOLD_MILLIS = 50;
private static final int MESSAGE_TUNE_DURATION_THRESHOLD_MILLIS = 2000;
private static final int DO_RELEASE = 1;
private static final int DO_SET_MAIN = 2;
private static final int DO_SET_SURFACE = 3;
private static final int DO_DISPATCH_SURFACE_CHANGED = 4;
private static final int DO_SET_STREAM_VOLUME = 5;
private static final int DO_TUNE = 6;
private static final int DO_SET_CAPTION_ENABLED = 7;
private static final int DO_SELECT_TRACK = 8;
private static final int DO_APP_PRIVATE_COMMAND = 9;
private static final int DO_CREATE_OVERLAY_VIEW = 10;
private static final int DO_RELAYOUT_OVERLAY_VIEW = 11;
private static final int DO_REMOVE_OVERLAY_VIEW = 12;
private static final int DO_REQUEST_UNBLOCK_CONTENT = 13;
private final HandlerCaller mCaller;
private TvInputService.Session mTvInputSessionImpl;
private InputChannel mChannel;
private TvInputEventReceiver mReceiver;
public ITvInputSessionWrapper(Context context, TvInputService.Session sessionImpl,
InputChannel channel) {
mCaller = new HandlerCaller(context, null, this, true /* asyncHandler */);
mTvInputSessionImpl = sessionImpl;
mChannel = channel;
if (channel != null) {
mReceiver = new TvInputEventReceiver(channel, context.getMainLooper());
}
}
@Override
public void executeMessage(Message msg) {
if (mTvInputSessionImpl == null) {
return;
}
long startTime = System.currentTimeMillis();
switch (msg.what) {
case DO_RELEASE: {
mTvInputSessionImpl.release();
mTvInputSessionImpl = null;
if (mReceiver != null) {
mReceiver.dispose();
mReceiver = null;
}
if (mChannel != null) {
mChannel.dispose();
mChannel = null;
}
break;
}
case DO_SET_MAIN: {
mTvInputSessionImpl.setMain((Boolean) msg.obj);
break;
}
case DO_SET_SURFACE: {
mTvInputSessionImpl.setSurface((Surface) msg.obj);
break;
}
case DO_DISPATCH_SURFACE_CHANGED: {
SomeArgs args = (SomeArgs) msg.obj;
mTvInputSessionImpl.dispatchSurfaceChanged(args.argi1, args.argi2, args.argi3);
args.recycle();
break;
}
case DO_SET_STREAM_VOLUME: {
mTvInputSessionImpl.setStreamVolume((Float) msg.obj);
break;
}
case DO_TUNE: {
SomeArgs args = (SomeArgs) msg.obj;
mTvInputSessionImpl.tune((Uri) args.arg1, (Bundle) args.arg2);
args.recycle();
break;
}
case DO_SET_CAPTION_ENABLED: {
mTvInputSessionImpl.setCaptionEnabled((Boolean) msg.obj);
break;
}
case DO_SELECT_TRACK: {
SomeArgs args = (SomeArgs) msg.obj;
mTvInputSessionImpl.selectTrack((Integer) args.arg1, (String) args.arg2);
args.recycle();
break;
}
case DO_APP_PRIVATE_COMMAND: {
SomeArgs args = (SomeArgs) msg.obj;
mTvInputSessionImpl.appPrivateCommand((String) args.arg1, (Bundle) args.arg2);
args.recycle();
break;
}
case DO_CREATE_OVERLAY_VIEW: {
SomeArgs args = (SomeArgs) msg.obj;
mTvInputSessionImpl.createOverlayView((IBinder) args.arg1, (Rect) args.arg2);
args.recycle();
break;
}
case DO_RELAYOUT_OVERLAY_VIEW: {
mTvInputSessionImpl.relayoutOverlayView((Rect) msg.obj);
break;
}
case DO_REMOVE_OVERLAY_VIEW: {
mTvInputSessionImpl.removeOverlayView(true);
break;
}
case DO_REQUEST_UNBLOCK_CONTENT: {
mTvInputSessionImpl.unblockContent((String) msg.obj);
break;
}
default: {
Log.w(TAG, "Unhandled message code: " + msg.what);
break;
}
}
long duration = System.currentTimeMillis() - startTime;
if (duration > MESSAGE_HANDLING_DURATION_THRESHOLD_MILLIS) {
Log.w(TAG, "Handling message (" + msg.what + ") took too long time (duration="
+ duration + "ms)");
if (msg.what == DO_TUNE && duration > MESSAGE_TUNE_DURATION_THRESHOLD_MILLIS) {
throw new RuntimeException("Too much time to handle tune request. (" + duration
+ "ms > " + MESSAGE_TUNE_DURATION_THRESHOLD_MILLIS + "ms) "
+ "Consider handling the tune request in a separate thread.");
}
}
}
@Override
public void release() {
mTvInputSessionImpl.scheduleOverlayViewCleanup();
mCaller.executeOrSendMessage(mCaller.obtainMessage(DO_RELEASE));
}
@Override
public void setMain(boolean isMain) {
mCaller.executeOrSendMessage(mCaller.obtainMessageO(DO_SET_MAIN, isMain));
}
@Override
public void setSurface(Surface surface) {
mCaller.executeOrSendMessage(mCaller.obtainMessageO(DO_SET_SURFACE, surface));
}
@Override
public void dispatchSurfaceChanged(int format, int width, int height) {
mCaller.executeOrSendMessage(mCaller.obtainMessageIIII(DO_DISPATCH_SURFACE_CHANGED,
format, width, height, 0));
}
@Override
public final void setVolume(float volume) {
mCaller.executeOrSendMessage(mCaller.obtainMessageO(DO_SET_STREAM_VOLUME, volume));
}
@Override
public void tune(Uri channelUri, Bundle params) {
// Clear the pending tune requests.
mCaller.removeMessages(DO_TUNE);
mCaller.executeOrSendMessage(mCaller.obtainMessageOO(DO_TUNE, channelUri, params));
}
@Override
public void setCaptionEnabled(boolean enabled) {
mCaller.executeOrSendMessage(mCaller.obtainMessageO(DO_SET_CAPTION_ENABLED, enabled));
}
@Override
public void selectTrack(int type, String trackId) {
mCaller.executeOrSendMessage(mCaller.obtainMessageOO(DO_SELECT_TRACK, type, trackId));
}
@Override
public void appPrivateCommand(String action, Bundle data) {
mCaller.executeOrSendMessage(mCaller.obtainMessageOO(DO_APP_PRIVATE_COMMAND, action,
data));
}
@Override
public void createOverlayView(IBinder windowToken, Rect frame) {
mCaller.executeOrSendMessage(mCaller.obtainMessageOO(DO_CREATE_OVERLAY_VIEW, windowToken,
frame));
}
@Override
public void relayoutOverlayView(Rect frame) {
mCaller.executeOrSendMessage(mCaller.obtainMessageO(DO_RELAYOUT_OVERLAY_VIEW, frame));
}
@Override
public void removeOverlayView() {
mCaller.executeOrSendMessage(mCaller.obtainMessage(DO_REMOVE_OVERLAY_VIEW));
}
@Override
public void requestUnblockContent(String unblockedRating) {
mCaller.executeOrSendMessage(mCaller.obtainMessageO(
DO_REQUEST_UNBLOCK_CONTENT, unblockedRating));
}
private final class TvInputEventReceiver extends InputEventReceiver {
public TvInputEventReceiver(InputChannel inputChannel, Looper looper) {
super(inputChannel, looper);
}
@Override
public void onInputEvent(InputEvent event) {
if (mTvInputSessionImpl == null) {
// The session has been finished.
finishInputEvent(event, false);
return;
}
int handled = mTvInputSessionImpl.dispatchInputEvent(event, this);
if (handled != TvInputManager.Session.DISPATCH_IN_PROGRESS) {
finishInputEvent(event, handled == TvInputManager.Session.DISPATCH_HANDLED);
}
}
}
}
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