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/*
* Copyright (C) 2018 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.service.contentsuggestions;
import static com.android.internal.util.function.pooled.PooledLambda.obtainMessage;
import android.annotation.CallSuper;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.annotation.SystemApi;
import android.app.Service;
import android.app.contentsuggestions.ClassificationsRequest;
import android.app.contentsuggestions.ContentSuggestionsManager;
import android.app.contentsuggestions.IClassificationsCallback;
import android.app.contentsuggestions.ISelectionsCallback;
import android.app.contentsuggestions.SelectionsRequest;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.ColorSpace;
import android.graphics.GraphicBuffer;
import android.os.Bundle;
import android.os.Handler;
import android.os.IBinder;
import android.os.Looper;
import android.os.RemoteException;
import android.util.Log;
import android.util.Slog;
/**
* @hide
*/
@SystemApi
public abstract class ContentSuggestionsService extends Service {
private static final String TAG = ContentSuggestionsService.class.getSimpleName();
private Handler mHandler;
/**
* The action for the intent used to define the content suggestions service.
*
* <p>To be supported, the service must also require the
* * {@link android.Manifest.permission#BIND_CONTENT_SUGGESTIONS_SERVICE} permission so
* * that other applications can not abuse it.
*/
public static final String SERVICE_INTERFACE =
"android.service.contentsuggestions.ContentSuggestionsService";
private final IContentSuggestionsService mInterface = new IContentSuggestionsService.Stub() {
@Override
public void provideContextImage(int taskId, GraphicBuffer contextImage,
int colorSpaceId, Bundle imageContextRequestExtras) {
if (imageContextRequestExtras.containsKey(ContentSuggestionsManager.EXTRA_BITMAP)
&& contextImage != null) {
throw new IllegalArgumentException("Two bitmaps provided; expected one.");
}
Bitmap wrappedBuffer = null;
if (imageContextRequestExtras.containsKey(ContentSuggestionsManager.EXTRA_BITMAP)) {
wrappedBuffer = imageContextRequestExtras.getParcelable(
ContentSuggestionsManager.EXTRA_BITMAP);
} else {
if (contextImage != null) {
ColorSpace colorSpace = null;
if (colorSpaceId >= 0 && colorSpaceId < ColorSpace.Named.values().length) {
colorSpace = ColorSpace.get(ColorSpace.Named.values()[colorSpaceId]);
}
wrappedBuffer = Bitmap.wrapHardwareBuffer(contextImage, colorSpace);
}
}
mHandler.sendMessage(
obtainMessage(ContentSuggestionsService::onProcessContextImage,
ContentSuggestionsService.this, taskId,
wrappedBuffer,
imageContextRequestExtras));
}
@Override
public void suggestContentSelections(SelectionsRequest request,
ISelectionsCallback callback) {
mHandler.sendMessage(obtainMessage(
ContentSuggestionsService::onSuggestContentSelections,
ContentSuggestionsService.this, request, wrapSelectionsCallback(callback)));
}
@Override
public void classifyContentSelections(ClassificationsRequest request,
IClassificationsCallback callback) {
mHandler.sendMessage(obtainMessage(
ContentSuggestionsService::onClassifyContentSelections,
ContentSuggestionsService.this, request, wrapClassificationCallback(callback)));
}
@Override
public void notifyInteraction(String requestId, Bundle interaction) {
mHandler.sendMessage(
obtainMessage(ContentSuggestionsService::onNotifyInteraction,
ContentSuggestionsService.this, requestId, interaction));
}
};
@CallSuper
@Override
public void onCreate() {
super.onCreate();
mHandler = new Handler(Looper.getMainLooper(), null, true);
}
/** @hide */
@Override
public final IBinder onBind(Intent intent) {
if (SERVICE_INTERFACE.equals(intent.getAction())) {
return mInterface.asBinder();
}
Log.w(TAG, "Tried to bind to wrong intent (should be " + SERVICE_INTERFACE + ": " + intent);
return null;
}
/**
* Called by the system to provide the snapshot for the task associated with the given
* {@param taskId}.
*/
public abstract void onProcessContextImage(
int taskId, @Nullable Bitmap contextImage, @NonNull Bundle extras);
/**
* Content selections have been request through {@link ContentSuggestionsManager}, implementer
* should reply on the callback with selections.
*/
public abstract void onSuggestContentSelections(@NonNull SelectionsRequest request,
@NonNull ContentSuggestionsManager.SelectionsCallback callback);
/**
* Content classifications have been request through {@link ContentSuggestionsManager},
* implementer should reply on the callback with classifications.
*/
public abstract void onClassifyContentSelections(@NonNull ClassificationsRequest request,
@NonNull ContentSuggestionsManager.ClassificationsCallback callback);
/**
* User interactions have been reported through {@link ContentSuggestionsManager}, implementer
* should handle those interactions.
*/
public abstract void onNotifyInteraction(
@NonNull String requestId, @NonNull Bundle interaction);
private ContentSuggestionsManager.SelectionsCallback wrapSelectionsCallback(
ISelectionsCallback callback) {
return (statusCode, selections) -> {
try {
callback.onContentSelectionsAvailable(statusCode, selections);
} catch (RemoteException e) {
Slog.e(TAG, "Error sending result: " + e);
}
};
}
private ContentSuggestionsManager.ClassificationsCallback wrapClassificationCallback(
IClassificationsCallback callback) {
return ((statusCode, classifications) -> {
try {
callback.onContentClassificationsAvailable(statusCode, classifications);
} catch (RemoteException e) {
Slog.e(TAG, "Error sending result: " + e);
}
});
}
}
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