1package eu.siacs.conversations.ui;
2
3import android.annotation.SuppressLint;
4import android.app.Activity;
5import android.content.Context;
6import android.content.Intent;
7import android.databinding.DataBindingUtil;
8import android.media.MediaRecorder;
9import android.net.Uri;
10import android.os.Bundle;
11import android.os.FileObserver;
12import android.os.Handler;
13import android.os.SystemClock;
14import android.util.Log;
15import android.view.View;
16import android.view.WindowManager;
17import android.widget.Toast;
18
19import java.io.File;
20import java.io.IOException;
21import java.text.SimpleDateFormat;
22import java.util.Date;
23import java.util.Locale;
24
25import eu.siacs.conversations.Config;
26import eu.siacs.conversations.R;
27import eu.siacs.conversations.databinding.ActivityRecordingBinding;
28import eu.siacs.conversations.persistance.FileBackend;
29import eu.siacs.conversations.utils.ThemeHelper;
30
31public class RecordingActivity extends Activity implements View.OnClickListener {
32
33 public static String STORAGE_DIRECTORY_TYPE_NAME = "Recordings";
34
35 private ActivityRecordingBinding binding;
36
37 private MediaRecorder mRecorder;
38 private long mStartTime = 0;
39
40 private Handler mHandler = new Handler();
41 private Runnable mTickExecutor = new Runnable() {
42 @Override
43 public void run() {
44 tick();
45 mHandler.postDelayed(mTickExecutor, 100);
46 }
47 };
48
49 private File mOutputFile;
50 private boolean mShouldFinishAfterWrite = false;
51
52 private FileObserver mFileObserver;
53
54 @Override
55 protected void onCreate(Bundle savedInstanceState) {
56 setTheme(ThemeHelper.findDialog(this));
57 super.onCreate(savedInstanceState);
58 this.binding = DataBindingUtil.setContentView(this,R.layout.activity_recording);
59 this.binding.cancelButton.setOnClickListener(this);
60 this.binding.shareButton.setOnClickListener(this);
61 this.setFinishOnTouchOutside(false);
62 getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
63 }
64
65 @Override
66 protected void onStart() {
67 super.onStart();
68 if (!startRecording()) {
69 this.binding.shareButton.setEnabled(false);
70 Toast.makeText(this, R.string.unable_to_start_recording, Toast.LENGTH_SHORT).show();
71 }
72 }
73
74 @Override
75 protected void onStop() {
76 super.onStop();
77 if (mRecorder != null) {
78 mHandler.removeCallbacks(mTickExecutor);
79 stopRecording(false);
80 }
81 if (mFileObserver != null) {
82 mFileObserver.stopWatching();
83 }
84 }
85
86 private boolean startRecording() {
87 mRecorder = new MediaRecorder();
88 mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
89 mRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
90 mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);
91 mRecorder.setAudioEncodingBitRate(96000);
92 mRecorder.setAudioSamplingRate(22050);
93 setupOutputFile();
94 mRecorder.setOutputFile(mOutputFile.getAbsolutePath());
95
96 try {
97 mRecorder.prepare();
98 mRecorder.start();
99 mStartTime = SystemClock.elapsedRealtime();
100 mHandler.postDelayed(mTickExecutor, 100);
101 Log.d("Voice Recorder", "started recording to " + mOutputFile.getAbsolutePath());
102 return true;
103 } catch (Exception e) {
104 Log.e("Voice Recorder", "prepare() failed " + e.getMessage());
105 return false;
106 }
107 }
108
109 protected void stopRecording(boolean saveFile) {
110 mShouldFinishAfterWrite = saveFile;
111 mRecorder.stop();
112 mRecorder.release();
113 mRecorder = null;
114 mStartTime = 0;
115 if (!saveFile && mOutputFile != null) {
116 if (mOutputFile.delete()) {
117 Log.d(Config.LOGTAG,"deleted canceled recording");
118 }
119 }
120 }
121
122 private static File generateOutputFilename(Context context) {
123 SimpleDateFormat dateFormat = new SimpleDateFormat("yyyyMMdd_HHmmssSSS", Locale.US);
124 String filename = "RECORDING_" + dateFormat.format(new Date()) + ".m4a";
125 return new File(FileBackend.getConversationsDirectory(context, STORAGE_DIRECTORY_TYPE_NAME) + "/" + filename);
126 }
127
128 private void setupOutputFile() {
129 mOutputFile = generateOutputFilename(this);
130 File parentDirectory = mOutputFile.getParentFile();
131 if (parentDirectory.mkdirs()) {
132 Log.d(Config.LOGTAG, "created " + parentDirectory.getAbsolutePath());
133 }
134 File noMedia = new File(parentDirectory, ".nomedia");
135 if (!noMedia.exists()) {
136 try {
137 if (noMedia.createNewFile()) {
138 Log.d(Config.LOGTAG, "created nomedia file in " + parentDirectory.getAbsolutePath());
139 }
140 } catch (IOException e) {
141 Log.d(Config.LOGTAG, "unable to create nomedia file in " + parentDirectory.getAbsolutePath(), e);
142 }
143 }
144 setupFileObserver(parentDirectory);
145 }
146
147 private void setupFileObserver(File directory) {
148 mFileObserver = new FileObserver(directory.getAbsolutePath()) {
149 @Override
150 public void onEvent(int event, String s) {
151 if (s != null && s.equals(mOutputFile.getName()) && event == FileObserver.CLOSE_WRITE) {
152 if (mShouldFinishAfterWrite) {
153 setResult(Activity.RESULT_OK, new Intent().setData(Uri.fromFile(mOutputFile)));
154 finish();
155 }
156 }
157 }
158 };
159 mFileObserver.startWatching();
160 }
161
162 @SuppressLint("SetTextI18n")
163 private void tick() {
164 long time = (mStartTime < 0) ? 0 : (SystemClock.elapsedRealtime() - mStartTime);
165 int minutes = (int) (time / 60000);
166 int seconds = (int) (time / 1000) % 60;
167 int milliseconds = (int) (time / 100) % 10;
168 this.binding.timer.setText(minutes + ":" + (seconds < 10 ? "0" + seconds : seconds) + "." + milliseconds);
169 }
170
171 @Override
172 public void onClick(View view) {
173 switch (view.getId()) {
174 case R.id.cancel_button:
175 mHandler.removeCallbacks(mTickExecutor);
176 stopRecording(false);
177 setResult(RESULT_CANCELED);
178 finish();
179 break;
180 case R.id.share_button:
181 this.binding.shareButton.setEnabled(false);
182 this.binding.shareButton.setText(R.string.please_wait);
183 mHandler.removeCallbacks(mTickExecutor);
184 mHandler.postDelayed(() -> stopRecording(true), 500);
185 break;
186 }
187 }
188}