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.appcompat.app.AppCompatActivity;
19import androidx.databinding.DataBindingUtil;
20
21import com.google.common.collect.ImmutableSet;
22
23import java.io.File;
24import java.lang.ref.WeakReference;
25import java.text.SimpleDateFormat;
26import java.util.Date;
27import java.util.Locale;
28import java.util.Objects;
29import java.util.concurrent.CountDownLatch;
30import java.util.concurrent.TimeUnit;
31import java.util.Set;
32
33import eu.siacs.conversations.Config;
34import eu.siacs.conversations.R;
35import eu.siacs.conversations.databinding.ActivityRecordingBinding;
36import eu.siacs.conversations.ui.util.SettingsUtils;
37import eu.siacs.conversations.utils.TimeFrameUtils;
38
39public class RecordingActivity extends BaseActivity 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 super.onCreate(savedInstanceState);
65 this.binding = DataBindingUtil.setContentView(this, R.layout.activity_recording);
66 this.binding.cancelButton.setOnClickListener(this);
67 this.binding.shareButton.setOnClickListener(this);
68 this.setFinishOnTouchOutside(false);
69 getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
70 }
71 @Override
72 public void onStart() {
73 super.onStart();
74 if (!startRecording()) {
75 this.binding.shareButton.setEnabled(false);
76 this.binding.timer.setTextAppearance(com.google.android.material.R.style.TextAppearance_Material3_BodyMedium);
77 // TODO reset font family. make red?
78 this.binding.timer.setText(R.string.unable_to_start_recording);
79 }
80 }
81
82 @Override
83 protected void onStop() {
84 super.onStop();
85 if (mRecorder != null) {
86 mHandler.removeCallbacks(mTickExecutor);
87 stopRecording(false);
88 }
89 if (mFileObserver != null) {
90 mFileObserver.stopWatching();
91 }
92 }
93
94 private static final Set<String> AAC_SENSITIVE_DEVICES =
95 new ImmutableSet.Builder<String>()
96 .add("FP4") // Fairphone 4 https://codeberg.org/monocles/monocles_chat/issues/133
97 .add("ONEPLUS A6000") // OnePlus 6 https://github.com/iNPUTmice/Conversations/issues/4329
98 .add("ONEPLUS A6003") // OnePlus 6 https://github.com/iNPUTmice/Conversations/issues/4329
99 .add("ONEPLUS A6010") // OnePlus 6T https://codeberg.org/monocles/monocles_chat/issues/133
100 .add("ONEPLUS A6013") // OnePlus 6T https://codeberg.org/monocles/monocles_chat/issues/133
101 .add("Pixel 4a") // Pixel 4a https://github.com/iNPUTmice/Conversations/issues/4223
102 .add("WP12 Pro") // Oukitel WP 12 Pro https://github.com/iNPUTmice/Conversations/issues/4223
103 .add("Volla Phone X") // Volla Phone X https://github.com/iNPUTmice/Conversations/issues/4223
104 .build();
105
106 private boolean startRecording() {
107 mRecorder = new MediaRecorder();
108 mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
109 final int outputFormat;
110 if (Config.USE_OPUS_VOICE_MESSAGES && Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
111 outputFormat = MediaRecorder.OutputFormat.OGG;
112 mRecorder.setOutputFormat(outputFormat);
113 mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.OPUS);
114 mRecorder.setAudioEncodingBitRate(32_000);
115 } else {
116 outputFormat = MediaRecorder.OutputFormat.MPEG_4;
117 mRecorder.setOutputFormat(outputFormat);
118 if (AAC_SENSITIVE_DEVICES.contains(Build.MODEL)) {
119 // Changing these three settings for AAC sensitive devices might lead to sporadically truncated (cut-off) voice messages.
120 mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.HE_AAC);
121 mRecorder.setAudioSamplingRate(24_000);
122 mRecorder.setAudioEncodingBitRate(28_000);
123 } else {
124 mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);
125 mRecorder.setAudioSamplingRate(22_050);
126 mRecorder.setAudioEncodingBitRate(64_000);
127 }
128 }
129 setupOutputFile(outputFormat);
130 mRecorder.setOutputFile(mOutputFile.getAbsolutePath());
131
132 try {
133 mRecorder.prepare();
134 mRecorder.start();
135 mStartTime = SystemClock.elapsedRealtime();
136 mHandler.postDelayed(mTickExecutor, 100);
137 Log.d(Config.LOGTAG, "started recording to " + mOutputFile.getAbsolutePath());
138 return true;
139 } catch (Exception e) {
140 Log.e(Config.LOGTAG, "prepare() failed ", e);
141 return false;
142 }
143 }
144
145 protected void stopRecording(final boolean saveFile) {
146 try {
147 mRecorder.stop();
148 mRecorder.release();
149 } catch (Exception e) {
150 if (saveFile) {
151 Toast.makeText(this, R.string.unable_to_save_recording, Toast.LENGTH_SHORT).show();
152 return;
153 }
154 } finally {
155 mRecorder = null;
156 mStartTime = 0;
157 }
158 if (!saveFile && mOutputFile != null) {
159 if (mOutputFile.delete()) {
160 Log.d(Config.LOGTAG, "deleted canceled recording");
161 }
162 }
163 if (saveFile) {
164 new Thread(new Finisher(outputFileWrittenLatch, mOutputFile, this)).start();
165 }
166 }
167
168 private static class Finisher implements Runnable {
169
170 private final CountDownLatch latch;
171 private final File outputFile;
172 private final WeakReference<Activity> activityReference;
173
174 private Finisher(CountDownLatch latch, File outputFile, Activity activity) {
175 this.latch = latch;
176 this.outputFile = outputFile;
177 this.activityReference = new WeakReference<>(activity);
178 }
179
180 @Override
181 public void run() {
182 try {
183 if (!latch.await(8, TimeUnit.SECONDS)) {
184 Log.d(Config.LOGTAG, "time out waiting for output file to be written");
185 }
186 } catch (final InterruptedException e) {
187 Log.d(Config.LOGTAG, "interrupted while waiting for output file to be written", e);
188 }
189 final Activity activity = activityReference.get();
190 if (activity == null) {
191 return;
192 }
193 activity.runOnUiThread(
194 () -> {
195 activity.setResult(
196 Activity.RESULT_OK, new Intent().setData(Uri.fromFile(outputFile)));
197 activity.finish();
198 });
199 }
200 }
201
202 private File generateOutputFilename(final int outputFormat) {
203 final SimpleDateFormat dateFormat = new SimpleDateFormat("yyyyMMdd_HHmmssSSS", Locale.US);
204 final String extension;
205 if (outputFormat == MediaRecorder.OutputFormat.MPEG_4) {
206 extension = "m4a";
207 } else if (outputFormat == MediaRecorder.OutputFormat.OGG) {
208 extension = "oga";
209 } else {
210 throw new IllegalStateException("Unrecognized output format");
211 }
212 final String filename =
213 String.format("RECORDING_%s.%s", dateFormat.format(new Date()), extension);
214 final File parentDirectory;
215 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
216 parentDirectory =
217 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_RECORDINGS);
218 } else {
219 parentDirectory =
220 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
221 }
222 final File conversationsDirectory = new File(parentDirectory, getString(R.string.app_name));
223 return new File(conversationsDirectory, filename);
224 }
225
226 private void setupOutputFile(final int outputFormat) {
227 mOutputFile = generateOutputFilename(outputFormat);
228 final File parentDirectory = mOutputFile.getParentFile();
229 if (Objects.requireNonNull(parentDirectory).mkdirs()) {
230 Log.d(Config.LOGTAG, "created " + parentDirectory.getAbsolutePath());
231 }
232 setupFileObserver(parentDirectory);
233 }
234
235 private void setupFileObserver(final File directory) {
236 mFileObserver =
237 new FileObserver(directory.getAbsolutePath()) {
238 @Override
239 public void onEvent(int event, String s) {
240 if (s != null
241 && s.equals(mOutputFile.getName())
242 && event == FileObserver.CLOSE_WRITE) {
243 outputFileWrittenLatch.countDown();
244 }
245 }
246 };
247 mFileObserver.startWatching();
248 }
249
250 private void tick() {
251 this.binding.timer.setText(TimeFrameUtils.formatTimePassed(mStartTime, true));
252 }
253
254 @Override
255 public void onClick(final View view) {
256 switch (view.getId()) {
257 case R.id.cancel_button:
258 mHandler.removeCallbacks(mTickExecutor);
259 stopRecording(false);
260 setResult(RESULT_CANCELED);
261 finish();
262 break;
263 case R.id.share_button:
264 this.binding.shareButton.setEnabled(false);
265 this.binding.shareButton.setText(R.string.please_wait);
266 mHandler.removeCallbacks(mTickExecutor);
267 mHandler.postDelayed(() -> stopRecording(true), 500);
268 break;
269 }
270 }
271}