Update AOSP Dialer source from internal google3 repository at

cl/159428781.

Test: make, treehugger

This CL updates the AOSP Dialer source with all the changes that have
gone into the private google3 repository. This includes all the
changes from cl/152373142 (4/06/2017) to cl/159428781 (6/19/2017).

This goal of these drops is to keep the AOSP source in sync with the
internal google3 repository. Currently these sync are done by hand
with very minor modifications to the internal source code.
See the Android.mk file for list of modifications.
Our current goal is to do frequent drops (daily if possible) and
eventually switched to an automated process.

Change-Id: Ie60a84b3936efd0ea3d95d7c86bf96d2b1663030

1 files changed, 191 insertions, 0 deletions

diff --git a/java/com/android/voicemail/impl/transcribe/TranscriptionTask.java b/java/com/android/voicemail/impl/transcribe/TranscriptionTask.java
new file mode 100644
index 000000000..0fbc33ad5
--- /dev/null
+++ b/java/com/android/voicemail/impl/transcribe/TranscriptionTask.java
@@ -0,0 +1,191 @@
+/*
+ * Copyright (C) 2017 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.voicemail.impl.transcribe;
+
+import android.annotation.TargetApi;
+import android.app.job.JobWorkItem;
+import android.content.Context;
+import android.net.Uri;
+import android.text.TextUtils;
+import com.android.dialer.common.concurrent.ThreadUtil;
+import com.android.voicemail.impl.VvmLog;
+import com.android.voicemail.impl.transcribe.TranscriptionService.JobCallback;
+import com.android.voicemail.impl.transcribe.grpc.TranscriptionClient;
+import com.android.voicemail.impl.transcribe.grpc.TranscriptionClientFactory;
+import com.google.internal.communications.voicemailtranscription.v1.AudioFormat;
+import com.google.internal.communications.voicemailtranscription.v1.TranscribeVoicemailRequest;
+import com.google.protobuf.ByteString;
+import io.grpc.Status;
+import java.io.IOException;
+import java.io.InputStream;
+
+/**
+ * Background task to get a voicemail transcription and update the database.
+ *
+ * <pre>
+ * This task performs the following steps:
+ *   1. Update the transcription-state in the database to 'in-progress'
+ *   2. Create grpc client and transcription request
+ *   3. Make synchronous grpc transcription request to backend server
+ *     3a. On response
+ *       Update the database with transcription (if successful) and new transcription-state
+ *     3b. On network error
+ *       If retry-count < max then increment retry-count and retry the request
+ *       Otherwise update the transcription-state in the database to 'transcription-failed'
+ *   4. Notify the callback that the work item is complete
+ * </pre>
+ */
+public class TranscriptionTask implements Runnable {
+  private static final String TAG = "TranscriptionTask";
+
+  private final Context context;
+  private final JobCallback callback;
+  private final JobWorkItem workItem;
+  private final TranscriptionClientFactory clientFactory;
+  private final Uri voicemailUri;
+  private final TranscriptionDbHelper databaseHelper;
+  private ByteString audioData;
+  private AudioFormat encoding;
+
+  private static final int MAX_RETRIES = 2;
+  static final String AMR_PREFIX = "#!AMR\n";
+
+  public TranscriptionTask(
+      Context context,
+      JobCallback callback,
+      JobWorkItem workItem,
+      TranscriptionClientFactory clientFactory) {
+    this.context = context;
+    this.callback = callback;
+    this.workItem = workItem;
+    this.clientFactory = clientFactory;
+    this.voicemailUri = getVoicemailUri(workItem);
+    databaseHelper = new TranscriptionDbHelper(context, voicemailUri);
+  }
+
+  @Override
+  public void run() {
+    VvmLog.i(TAG, "run");
+    if (readAndValidateAudioFile()) {
+      updateTranscriptionState(VoicemailCompat.TRANSCRIPTION_IN_PROGRESS);
+      transcribeVoicemail();
+    } else {
+      updateTranscriptionState(VoicemailCompat.TRANSCRIPTION_FAILED);
+    }
+    ThreadUtil.postOnUiThread(
+        () -> {
+          callback.onWorkCompleted(workItem);
+        });
+  }
+
+  private void transcribeVoicemail() {
+    VvmLog.i(TAG, "transcribeVoicemail");
+    TranscribeVoicemailRequest request = makeRequest();
+    TranscriptionClient client = clientFactory.getClient();
+    String transcript = null;
+    for (int i = 0; transcript == null && i < MAX_RETRIES; i++) {
+      VvmLog.i(TAG, "transcribeVoicemail, try: " + (i + 1));
+      TranscriptionClient.TranscriptionResponseWrapper responseWrapper =
+          client.transcribeVoicemail(request);
+      if (responseWrapper.status != null) {
+        VvmLog.i(TAG, "transcribeVoicemail, status: " + responseWrapper.status.getCode());
+        if (shouldRetryRequest(responseWrapper.status)) {
+          backoff(i);
+        } else {
+          break;
+        }
+      } else if (responseWrapper.response != null) {
+        if (!TextUtils.isEmpty(responseWrapper.response.getTranscript())) {
+          VvmLog.i(TAG, "transcribeVoicemail, got response");
+          transcript = responseWrapper.response.getTranscript();
+        } else {
+          VvmLog.i(TAG, "transcribeVoicemail, empty transcription");
+        }
+      } else {
+        VvmLog.w(TAG, "transcribeVoicemail, no response");
+      }
+    }
+
+    int newState =
+        (transcript == null)
+            ? VoicemailCompat.TRANSCRIPTION_FAILED
+            : VoicemailCompat.TRANSCRIPTION_AVAILABLE;
+    updateTranscriptionAndState(transcript, newState);
+  }
+
+  private static boolean shouldRetryRequest(Status status) {
+    return status.getCode() == Status.Code.UNAVAILABLE;
+  }
+
+  private static void backoff(int retryCount) {
+    VvmLog.i(TAG, "backoff, count: " + retryCount);
+    try {
+      long millis = (1 << retryCount) * 1000;
+      Thread.sleep(millis);
+    } catch (InterruptedException e) {
+      VvmLog.w(TAG, "interrupted");
+      Thread.currentThread().interrupt();
+    }
+  }
+
+  private void updateTranscriptionAndState(String transcript, int newState) {
+    databaseHelper.setTranscriptionAndState(transcript, newState);
+  }
+
+  private void updateTranscriptionState(int newState) {
+    databaseHelper.setTranscriptionState(newState);
+  }
+
+  private TranscribeVoicemailRequest makeRequest() {
+    return TranscribeVoicemailRequest.newBuilder()
+        .setVoicemailData(audioData)
+        .setAudioFormat(encoding)
+        .build();
+  }
+
+  // Uses try-with-resource
+  @TargetApi(android.os.Build.VERSION_CODES.M)
+  private boolean readAndValidateAudioFile() {
+    if (voicemailUri == null) {
+      VvmLog.i(TAG, "Transcriber.readAndValidateAudioFile, file not found.");
+      return false;
+    } else {
+      VvmLog.i(TAG, "Transcriber.readAndValidateAudioFile, reading: " + voicemailUri);
+    }
+
+    try (InputStream in = context.getContentResolver().openInputStream(voicemailUri)) {
+      audioData = ByteString.readFrom(in);
+      VvmLog.i(TAG, "Transcriber.readAndValidateAudioFile, read " + audioData.size() + " bytes");
+    } catch (IOException e) {
+      VvmLog.e(TAG, "Transcriber.readAndValidateAudioFile", e);
+      return false;
+    }
+
+    if (audioData.startsWith(ByteString.copyFromUtf8(AMR_PREFIX))) {
+      encoding = AudioFormat.AMR_NB_8KHZ;
+    } else {
+      VvmLog.i(TAG, "Transcriber.readAndValidateAudioFile, unknown encoding");
+      encoding = AudioFormat.AUDIO_FORMAT_UNSPECIFIED;
+      return false;
+    }
+
+    return true;
+  }
+
+  private static Uri getVoicemailUri(JobWorkItem workItem) {
+    return workItem.getIntent().getParcelableExtra(TranscriptionService.EXTRA_VOICEMAIL_URI);
+  }
+}