add call recording option

Change-Id: Ic66a8627f7afed283572c821d079d1a449d98d6d

Conflicts:

	src/com/android/phone/CallFeaturesSetting.java
	src/com/android/phone/PhoneUtils.java

Conflicts:

	src/com/android/phone/PhoneUtils.java

Author: nadlabak

res/values/strings.xml

@@ -1522,6 +1522,10 @@
          [CHAR LIMIT=40] -->
     <string name="preference_category_ringtone">Ringtone</string>
 
+    <!-- Call recording -->
+    <string name="call_recording_title">Call recording</string>
+    <string name="call_recording_summary">"WARNING: Call recording may be illegal in some countries! Consult your local laws before you enable this option! When enabled, recordings are stored in CallRecordings folder on SD Card."</string>
+
     <!-- Voice quality filter -->
     <string name="voice_quality_preferences_title">Voice quality</string>
     <string name="voice_quality_summary">Voice profile is currently set to: %s</string>

res/xml/call_feature_setting.xml

@@ -187,6 +187,12 @@
         android:entries="@array/dtmf_tone_entries"
         android:entryValues="@array/dtmf_tone_values"/>
 
+    <CheckBoxPreference
+        android:key="button_call_recording"
+        android:title="@string/call_recording_title"
+        android:persistent="true"
+        android:summary="@string/call_recording_summary"/>
+
     <CheckBoxPreference
         android:key="button_noise_suppression_key"
         android:title="@string/noise_suppression_title"

src/com/android/phone/CallNotifier.java

@@ -167,6 +167,8 @@ public class CallNotifier extends Handler
     private boolean mVoicePrivacyState = false;
     private boolean mIsCdmaRedialCall = false;
 
+    private Call.State mLastCallState = null;
+
     // Emergency call tone and vibrate:
     private int mIsEmergencyToneOn;
     private int mCurrentEmergencyToneState = EMERGENCY_TONE_OFF;
@@ -909,7 +911,19 @@ private void onPhoneStateChanged(AsyncResult r) {
                         mInCallRingbackTonePlayer.stopTone();
                         mInCallRingbackTonePlayer = null;
                     }
+                    if (PhoneUtils.PhoneSettings.callRecordingEnabled(mApplication)) {
+                        if (callState == Call.State.ACTIVE && callState != mLastCallState) {
+                            log("onPhoneStateChanged: State ACTIVE - startRecording, last state was: " + mLastCallState);
+                            Call call = PhoneUtils.getCurrentCall(fgPhone);
+                            Connection c = PhoneUtils.getConnection(fgPhone, call);
+                            PhoneUtils.startRecording(c.getAddress(), c.isIncoming() ? "in":"out");
+                        } else if (callState != Call.State.ACTIVE && mLastCallState == Call.State.ACTIVE) {
+                            log("onPhoneStateChanged: State not ACTIVE - stopRecording");
+                            PhoneUtils.stopRecording();
+                        }
+                    }
                 }
+                mLastCallState = callState;
             }
         }
     }

src/com/android/phone/PhoneUtils.java

@@ -29,6 +29,7 @@
 import android.content.pm.PackageManager;
 import android.graphics.drawable.Drawable;
 import android.media.AudioManager;
+import android.media.MediaRecorder;
 import android.net.Uri;
 import android.net.sip.SipManager;
 import android.os.AsyncResult;
@@ -65,7 +66,11 @@
 import com.android.internal.telephony.cdma.CdmaConnection;
 import com.android.internal.telephony.sip.SipPhone;
 
+import java.io.File;
+import java.io.IOException;
+import java.text.SimpleDateFormat;
 import java.util.ArrayList;
+import java.util.Calendar;
 import java.util.Hashtable;
 import java.util.Iterator;
 import java.util.List;
@@ -98,9 +103,13 @@ public class PhoneUtils {
     static final int AUDIO_RINGING = 1;  /** audio behaviour while ringing */
     static final int AUDIO_OFFHOOK = 2;  /** audio behaviour while in call. */
 
+    private static MediaRecorder recorder = null;
+
     /** Speaker state, persisting between wired headset connection events */
     private static boolean sIsSpeakerEnabled = false;
 
+    private static boolean sIsFirstCall = true;
+
     /** Hash table to store mute (Boolean) values based upon the connection.*/
     private static Hashtable<Connection, Boolean> sConnectionMuteTable =
         new Hashtable<Connection, Boolean>();
@@ -430,6 +439,10 @@ static boolean keepProximitySensorOn(Context context) {
             return PreferenceManager.getDefaultSharedPreferences(context)
                     .getBoolean("keep_proximity_sensor_on", false);
         }
+        static boolean callRecordingEnabled(Context context) {
+            return PreferenceManager.getDefaultSharedPreferences(context)
+                       .getBoolean("button_call_recording", false);
+        }
     };
 
     static boolean hangupRingingCall(Call ringing) {
@@ -2078,6 +2091,71 @@ static boolean getMute() {
         }
     }
 
+    private static File createRecordingTempFile(String path) {
+        File dir = new File(path);
+        if (!dir.exists()) {
+            try {
+                dir.mkdirs();
+            } catch (Exception e) {
+                Log.e("PhoneUtils", "unable to create directory " + dir + ": " + e);
+                return null;
+            }
+        } else if (!dir.canWrite()) {
+            Log.e("PhoneUtils", "no write permission for directory: " + dir);
+            return null;
+        }
+        try {
+            return File.createTempFile("call", ".tmp", dir);
+        } catch (IOException e) {
+            Log.e("PhoneUtils", "unable to create temp file in " + dir + ": " + e);
+            return null;
+        }
+    }
+
+    static void startRecording(String address, String inOut) {
+        String dirName = "/sdcard/CallRecordings";
+        log("startRecording");
+        if (recorder == null) {
+            log("startRecording: create new recorder");
+            File recording = null;
+            recorder = new MediaRecorder();
+            recorder.setAudioSource(MediaRecorder.AudioSource.VOICE_RECOGNITION);
+            recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
+            recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);
+            recording = createRecordingTempFile(dirName);
+            if (recording == null) {
+                recorder.release();
+                recorder = null;
+                return;
+            }
+            // name recording filename based on call data
+            Calendar cl = Calendar.getInstance();
+            SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd-HHmmss-(");
+            String newRecordingName = dirName + "/" + sdf.format(cl.getTime()) + address + ")-" + inOut + ".m4a";
+            recording.renameTo(new File(newRecordingName));
+            recorder.setOutputFile(newRecordingName);
+            try {
+                recorder.prepare();
+                recorder.start();
+            } catch (IOException e) {
+                Log.e("PhoneUtils", "io problems while preparing [" +
+                newRecordingName + "]: " + e.getMessage());
+                recorder.release();
+                recorder = null;
+            }
+        }
+    }
+
+    static void stopRecording() {
+        log("stopRecording");
+        if (recorder != null) {
+            log("stopRecording: release old recorder");
+            recorder.stop();
+            recorder.release();
+            recorder = null;
+        }
+    }
+
     /* package */ static void setAudioMode() {
         setAudioMode(PhoneApp.getInstance().mCM);
     }
@@ -2556,7 +2634,16 @@ private static int checkCnapSpecialCases(String n) {
     private static boolean activateSpeakerIfDocked(Phone phone) {
         if (DBG) log("activateSpeakerIfDocked()...");
 
+        /* TODO: hack for Defy+ libaudio on Milestone (first call is mute),
+           should be removed when a proper fix is ready */
+        if (sIsFirstCall) {
+            sIsFirstCall = false;
+            turnOnSpeaker(phone.getContext(), true, false);
+            restoreSpeakerMode(phone.getContext());
+        }
+
         boolean activated = false;
+
         if (PhoneApp.mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED) {
             if (DBG) log("activateSpeakerIfDocked(): In a dock -> may need to turn on speaker.");
             PhoneApp app = PhoneApp.getInstance();