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 com.google.common.collect.ImmutableSet;
21
22import java.io.File;
23import java.lang.ref.WeakReference;
24import java.text.SimpleDateFormat;
25import java.util.Date;
26import java.util.Locale;
27import java.util.Objects;
28import java.util.concurrent.CountDownLatch;
29import java.util.concurrent.TimeUnit;
30import java.util.Set;
31
32import eu.siacs.conversations.Config;
33import eu.siacs.conversations.R;
34import eu.siacs.conversations.databinding.ActivityRecordingBinding;
35import eu.siacs.conversations.ui.util.SettingsUtils;
36import eu.siacs.conversations.utils.ThemeHelper;
37import eu.siacs.conversations.utils.TimeFrameUtils;
38
39public class RecordingActivity extends Activity implements View.OnClickListener {
40
41 private ActivityRecordingBinding binding;
42
43 private MediaRecorder mRecorder;
44 private long mStartTime = 0;
45
46 private final CountDownLatch outputFileWrittenLatch = new CountDownLatch(1);
47
48 private final Handler mHandler = new Handler();
49 private final Runnable mTickExecutor =
50 new Runnable() {
51 @Override
52 public void run() {
53 tick();
54 mHandler.postDelayed(mTickExecutor, 100);
55 }
56 };
57
58 private File mOutputFile;
59
60 private FileObserver mFileObserver;
61
62 @Override
63 protected void onCreate(Bundle savedInstanceState) {
64 setTheme(ThemeHelper.findDialog(this));
65 super.onCreate(savedInstanceState);
66 this.binding = DataBindingUtil.setContentView(this, R.layout.activity_recording);
67 this.binding.cancelButton.setOnClickListener(this);
68 this.binding.shareButton.setOnClickListener(this);
69 this.setFinishOnTouchOutside(false);
70 getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
71 }
72
73 @Override
74 protected void onResume() {
75 super.onResume();
76 SettingsUtils.applyScreenshotPreventionSetting(this);
77 }
78
79 @Override
80 protected void onStart() {
81 super.onStart();
82 if (!startRecording()) {
83 this.binding.shareButton.setEnabled(false);
84 this.binding.timer.setTextAppearance(this, R.style.TextAppearance_Conversations_Title);
85 this.binding.timer.setText(R.string.unable_to_start_recording);
86 }
87 }
88
89 @Override
90 protected void onStop() {
91 super.onStop();
92 if (mRecorder != null) {
93 mHandler.removeCallbacks(mTickExecutor);
94 stopRecording(false);
95 }
96 if (mFileObserver != null) {
97 mFileObserver.stopWatching();
98 }
99 }
100
101 private static final Set<String> AAC_SENSITIVE_DEVICES =
102 new ImmutableSet.Builder<String>()
103 .add("FP4") // Fairphone 4 https://codeberg.org/monocles/monocles_chat/issues/133
104 .add("ONEPLUS A6000") // OnePlus 6 https://github.com/iNPUTmice/Conversations/issues/4329
105 .add("ONEPLUS A6003") // OnePlus 6 https://github.com/iNPUTmice/Conversations/issues/4329
106 .add("ONEPLUS A6010") // OnePlus 6T https://codeberg.org/monocles/monocles_chat/issues/133
107 .add("ONEPLUS A6013") // OnePlus 6T https://codeberg.org/monocles/monocles_chat/issues/133
108 .add("Pixel 4a") // Pixel 4a https://github.com/iNPUTmice/Conversations/issues/4223
109 .build();
110
111 private boolean startRecording() {
112 mRecorder = new MediaRecorder();
113 mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
114 final int outputFormat;
115 if (Config.USE_OPUS_VOICE_MESSAGES && Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
116 outputFormat = MediaRecorder.OutputFormat.OGG;
117 mRecorder.setOutputFormat(outputFormat);
118 mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.OPUS);
119 mRecorder.setAudioEncodingBitRate(32_000);
120 } else {
121 outputFormat = MediaRecorder.OutputFormat.MPEG_4;
122 mRecorder.setOutputFormat(outputFormat);
123 if (AAC_SENSITIVE_DEVICES.contains(Build.MODEL)) {
124 // Changing these three settings for AAC sensitive devices might lead to sporadically truncated (cut-off) voice messages.
125 mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.HE_AAC);
126 mRecorder.setAudioSamplingRate(24_000);
127 mRecorder.setAudioEncodingBitRate(28_000);
128 } else {
129 mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);
130 mRecorder.setAudioSamplingRate(22_050);
131 mRecorder.setAudioEncodingBitRate(64_000);
132 }
133 }
134 setupOutputFile(outputFormat);
135 mRecorder.setOutputFile(mOutputFile.getAbsolutePath());
136
137 try {
138 mRecorder.prepare();
139 mRecorder.start();
140 mStartTime = SystemClock.elapsedRealtime();
141 mHandler.postDelayed(mTickExecutor, 100);
142 Log.d(Config.LOGTAG, "started recording to " + mOutputFile.getAbsolutePath());
143 return true;
144 } catch (Exception e) {
145 Log.e(Config.LOGTAG, "prepare() failed ", e);
146 return false;
147 }
148 }
149
150 protected void stopRecording(final boolean saveFile) {
151 try {
152 mRecorder.stop();
153 mRecorder.release();
154 } catch (Exception e) {
155 if (saveFile) {
156 Toast.makeText(this, R.string.unable_to_save_recording, Toast.LENGTH_SHORT).show();
157 return;
158 }
159 } finally {
160 mRecorder = null;
161 mStartTime = 0;
162 }
163 if (!saveFile && mOutputFile != null) {
164 if (mOutputFile.delete()) {
165 Log.d(Config.LOGTAG, "deleted canceled recording");
166 }
167 }
168 if (saveFile) {
169 new Thread(new Finisher(outputFileWrittenLatch, mOutputFile, this)).start();
170 }
171 }
172
173 private static class Finisher implements Runnable {
174
175 private final CountDownLatch latch;
176 private final File outputFile;
177 private final WeakReference<Activity> activityReference;
178
179 private Finisher(CountDownLatch latch, File outputFile, Activity activity) {
180 this.latch = latch;
181 this.outputFile = outputFile;
182 this.activityReference = new WeakReference<>(activity);
183 }
184
185 @Override
186 public void run() {
187 try {
188 if (!latch.await(8, TimeUnit.SECONDS)) {
189 Log.d(Config.LOGTAG, "time out waiting for output file to be written");
190 }
191 } catch (final InterruptedException e) {
192 Log.d(Config.LOGTAG, "interrupted while waiting for output file to be written", e);
193 }
194 final Activity activity = activityReference.get();
195 if (activity == null) {
196 return;
197 }
198 activity.runOnUiThread(
199 () -> {
200 activity.setResult(
201 Activity.RESULT_OK, new Intent().setData(Uri.fromFile(outputFile)));
202 activity.finish();
203 });
204 }
205 }
206
207 private File generateOutputFilename(final int outputFormat) {
208 final SimpleDateFormat dateFormat = new SimpleDateFormat("yyyyMMdd_HHmmssSSS", Locale.US);
209 final String extension;
210 if (outputFormat == MediaRecorder.OutputFormat.MPEG_4) {
211 extension = "m4a";
212 } else if (outputFormat == MediaRecorder.OutputFormat.OGG) {
213 extension = "oga";
214 } else {
215 throw new IllegalStateException("Unrecognized output format");
216 }
217 final String filename =
218 String.format("RECORDING_%s.%s", dateFormat.format(new Date()), extension);
219 final File parentDirectory;
220 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
221 parentDirectory =
222 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_RECORDINGS);
223 } else {
224 parentDirectory =
225 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
226 }
227 final File conversationsDirectory = new File(parentDirectory, getString(R.string.app_name));
228 return new File(conversationsDirectory, filename);
229 }
230
231 private void setupOutputFile(final int outputFormat) {
232 mOutputFile = generateOutputFilename(outputFormat);
233 final File parentDirectory = mOutputFile.getParentFile();
234 if (Objects.requireNonNull(parentDirectory).mkdirs()) {
235 Log.d(Config.LOGTAG, "created " + parentDirectory.getAbsolutePath());
236 }
237 setupFileObserver(parentDirectory);
238 }
239
240 private void setupFileObserver(final File directory) {
241 mFileObserver =
242 new FileObserver(directory.getAbsolutePath()) {
243 @Override
244 public void onEvent(int event, String s) {
245 if (s != null
246 && s.equals(mOutputFile.getName())
247 && event == FileObserver.CLOSE_WRITE) {
248 outputFileWrittenLatch.countDown();
249 }
250 }
251 };
252 mFileObserver.startWatching();
253 }
254
255 private void tick() {
256 this.binding.timer.setText(TimeFrameUtils.formatTimePassed(mStartTime, true));
257 }
258
259 @Override
260 public void onClick(final View view) {
261 switch (view.getId()) {
262 case R.id.cancel_button:
263 mHandler.removeCallbacks(mTickExecutor);
264 stopRecording(false);
265 setResult(RESULT_CANCELED);
266 finish();
267 break;
268 case R.id.share_button:
269 this.binding.shareButton.setEnabled(false);
270 this.binding.shareButton.setText(R.string.please_wait);
271 mHandler.removeCallbacks(mTickExecutor);
272 mHandler.postDelayed(() -> stopRecording(true), 500);
273 break;
274 }
275 }
276}