1package eu.siacs.conversations.ui;
2
3import android.app.Activity;
4import android.content.Intent;
5import android.media.MediaRecorder;
6import android.net.Uri;
7import android.os.Build;
8import android.os.Bundle;
9import android.os.Environment;
10import android.os.FileObserver;
11import android.os.Handler;
12import android.os.SystemClock;
13import android.util.Log;
14import android.view.View;
15import android.view.WindowManager;
16import android.widget.Toast;
17
18import androidx.databinding.DataBindingUtil;
19
20import java.io.File;
21import java.lang.ref.WeakReference;
22import java.text.SimpleDateFormat;
23import java.util.Date;
24import java.util.Locale;
25import java.util.Objects;
26import java.util.concurrent.CountDownLatch;
27import java.util.concurrent.TimeUnit;
28
29import eu.siacs.conversations.Config;
30import eu.siacs.conversations.R;
31import eu.siacs.conversations.databinding.ActivityRecordingBinding;
32import eu.siacs.conversations.ui.util.SettingsUtils;
33import eu.siacs.conversations.utils.ThemeHelper;
34import eu.siacs.conversations.utils.TimeFrameUtils;
35
36public class RecordingActivity extends Activity implements View.OnClickListener {
37
38 private ActivityRecordingBinding binding;
39
40 private MediaRecorder mRecorder;
41 private long mStartTime = 0;
42
43 private final CountDownLatch outputFileWrittenLatch = new CountDownLatch(1);
44
45 private final Handler mHandler = new Handler();
46 private final Runnable mTickExecutor =
47 new Runnable() {
48 @Override
49 public void run() {
50 tick();
51 mHandler.postDelayed(mTickExecutor, 100);
52 }
53 };
54
55 private File mOutputFile;
56
57 private FileObserver mFileObserver;
58
59 @Override
60 protected void onCreate(Bundle savedInstanceState) {
61 setTheme(ThemeHelper.findDialog(this));
62 super.onCreate(savedInstanceState);
63 this.binding = DataBindingUtil.setContentView(this, R.layout.activity_recording);
64 this.binding.cancelButton.setOnClickListener(this);
65 this.binding.shareButton.setOnClickListener(this);
66 this.setFinishOnTouchOutside(false);
67 getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
68 }
69
70 @Override
71 protected void onResume() {
72 super.onResume();
73 SettingsUtils.applyScreenshotPreventionSetting(this);
74 }
75
76 @Override
77 protected void onStart() {
78 super.onStart();
79 if (!startRecording()) {
80 this.binding.shareButton.setEnabled(false);
81 this.binding.timer.setTextAppearance(this, R.style.TextAppearance_Conversations_Title);
82 this.binding.timer.setText(R.string.unable_to_start_recording);
83 }
84 }
85
86 @Override
87 protected void onStop() {
88 super.onStop();
89 if (mRecorder != null) {
90 mHandler.removeCallbacks(mTickExecutor);
91 stopRecording(false);
92 }
93 if (mFileObserver != null) {
94 mFileObserver.stopWatching();
95 }
96 }
97
98 private boolean startRecording() {
99 mRecorder = new MediaRecorder();
100 mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
101 if (Build.VERSION.SDK_INT >= 29) {
102 mRecorder.setOutputFormat(MediaRecorder.OutputFormat.OGG);
103 mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.OPUS);
104 mRecorder.setAudioEncodingBitRate(24000);
105 mRecorder.setAudioSamplingRate(48000);
106 } else {
107 mRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
108 mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);
109 mRecorder.setAudioEncodingBitRate(96000);
110 mRecorder.setAudioSamplingRate(22050);
111 }
112 setupOutputFile();
113 mRecorder.setOutputFile(mOutputFile.getAbsolutePath());
114
115 try {
116 mRecorder.prepare();
117 mRecorder.start();
118 mStartTime = SystemClock.elapsedRealtime();
119 mHandler.postDelayed(mTickExecutor, 100);
120 Log.d("Voice Recorder", "started recording to " + mOutputFile.getAbsolutePath());
121 return true;
122 } catch (Exception e) {
123 Log.e("Voice Recorder", "prepare() failed " + e.getMessage());
124 return false;
125 }
126 }
127
128 protected void stopRecording(final boolean saveFile) {
129 try {
130 mRecorder.stop();
131 mRecorder.release();
132 } catch (Exception e) {
133 if (saveFile) {
134 Toast.makeText(this, R.string.unable_to_save_recording, Toast.LENGTH_SHORT).show();
135 return;
136 }
137 } finally {
138 mRecorder = null;
139 mStartTime = 0;
140 }
141 if (!saveFile && mOutputFile != null) {
142 if (mOutputFile.delete()) {
143 Log.d(Config.LOGTAG, "deleted canceled recording");
144 }
145 }
146 if (saveFile) {
147 new Thread(new Finisher(outputFileWrittenLatch, mOutputFile, this)).start();
148 }
149 }
150
151 private static class Finisher implements Runnable {
152
153 private final CountDownLatch latch;
154 private final File outputFile;
155 private final WeakReference<Activity> activityReference;
156
157 private Finisher(CountDownLatch latch, File outputFile, Activity activity) {
158 this.latch = latch;
159 this.outputFile = outputFile;
160 this.activityReference = new WeakReference<>(activity);
161 }
162
163 @Override
164 public void run() {
165 try {
166 if (!latch.await(8, TimeUnit.SECONDS)) {
167 Log.d(Config.LOGTAG, "time out waiting for output file to be written");
168 }
169 } catch (final InterruptedException e) {
170 Log.d(Config.LOGTAG, "interrupted while waiting for output file to be written", e);
171 }
172 final Activity activity = activityReference.get();
173 if (activity == null) {
174 return;
175 }
176 activity.runOnUiThread(
177 () -> {
178 activity.setResult(
179 Activity.RESULT_OK, new Intent().setData(Uri.fromFile(outputFile)));
180 activity.finish();
181 });
182 }
183 }
184
185 private File generateOutputFilename() {
186 final SimpleDateFormat dateFormat = new SimpleDateFormat("yyyyMMdd_HHmmssSSS", Locale.US);
187 final String filename;
188 if (Build.VERSION.SDK_INT >= 29) {
189 filename = "RECORDING_" + dateFormat.format(new Date()) + ".opus";
190 } else {
191 filename = "RECORDING_" + dateFormat.format(new Date()) + ".m4a";
192 }
193 final File parentDirectory;
194 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
195 parentDirectory =
196 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_RECORDINGS);
197 } else {
198 parentDirectory =
199 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
200 }
201 final File conversationsDirectory = new File(parentDirectory, getString(R.string.app_name));
202 return new File(conversationsDirectory, filename);
203 }
204
205 private void setupOutputFile() {
206 mOutputFile = generateOutputFilename();
207 final File parentDirectory = mOutputFile.getParentFile();
208 if (Objects.requireNonNull(parentDirectory).mkdirs()) {
209 Log.d(Config.LOGTAG, "created " + parentDirectory.getAbsolutePath());
210 }
211 setupFileObserver(parentDirectory);
212 }
213
214 private void setupFileObserver(final File directory) {
215 mFileObserver =
216 new FileObserver(directory.getAbsolutePath()) {
217 @Override
218 public void onEvent(int event, String s) {
219 if (s != null
220 && s.equals(mOutputFile.getName())
221 && event == FileObserver.CLOSE_WRITE) {
222 outputFileWrittenLatch.countDown();
223 }
224 }
225 };
226 mFileObserver.startWatching();
227 }
228
229 private void tick() {
230 this.binding.timer.setText(TimeFrameUtils.formatTimePassed(mStartTime, true));
231 }
232
233 @Override
234 public void onClick(final View view) {
235 switch (view.getId()) {
236 case R.id.cancel_button:
237 mHandler.removeCallbacks(mTickExecutor);
238 stopRecording(false);
239 setResult(RESULT_CANCELED);
240 finish();
241 break;
242 case R.id.share_button:
243 this.binding.shareButton.setEnabled(false);
244 this.binding.shareButton.setText(R.string.please_wait);
245 mHandler.removeCallbacks(mTickExecutor);
246 mHandler.postDelayed(() -> stopRecording(true), 500);
247 break;
248 }
249 }
250}