(ImsMedia) Added startDtmf() and stopDtmf() APIs

Bug: 236381818
Test: atest ImsMediaJavaUnitTests
Change-Id: Ieb04de0f170f1c517ce9cdd1db437bb7d7e7ca65

2 files changed, 30 insertions, 0 deletions

diff --git a/framework/src/android/telephony/imsmedia/IImsAudioSession.aidl b/framework/src/android/telephony/imsmedia/IImsAudioSession.aidl
index 8013b6c5..58556bd8 100644
--- a/framework/src/android/telephony/imsmedia/IImsAudioSession.aidl
+++ b/framework/src/android/telephony/imsmedia/IImsAudioSession.aidl
@@ -33,6 +33,8 @@ interface IImsAudioSession {
     oneway void deleteConfig(in AudioConfig config);
     oneway void confirmConfig(in AudioConfig config);
     oneway void sendDtmf(char dtmfDigit, int duration);
+    oneway void startDtmf(char dtmfDigit);
+    oneway void stopDtmf();
     oneway void sendHeaderExtension(in List<RtpHeaderExtension> extensions);
     oneway void setMediaQualityThreshold(in MediaQualityThreshold threshold);
 }
diff --git a/framework/src/android/telephony/imsmedia/ImsAudioSession.java b/framework/src/android/telephony/imsmedia/ImsAudioSession.java
index 08edde6e..360da834 100644
--- a/framework/src/android/telephony/imsmedia/ImsAudioSession.java
+++ b/framework/src/android/telephony/imsmedia/ImsAudioSession.java
@@ -20,6 +20,7 @@ import android.os.IBinder;
 import android.os.RemoteException;
 import android.telephony.ims.RtpHeaderExtension;
 import android.util.Log;
+
 import java.util.List;
 
 /**
@@ -150,6 +151,33 @@ public class ImsAudioSession implements ImsMediaSession {
     }
 
     /**
+     * Start sending DTMF digit until the stopDtmf() API is received.
+     * If the implementation is currently sending a DTMF tone for which
+     * stopDtmf() is not received yet, then that digit must be stopped first
+     *
+     * @param dtmfDigit single char having one of 12 values: 0-9, *, #
+     */
+    public void startDtmf(final char dtmfDigit) {
+        try {
+            miSession.startDtmf(dtmfDigit);
+        } catch (RemoteException e) {
+            Log.e(TAG, "Failed to start DTMF: " + e);
+        }
+    }
+
+    /**
+     * Stop sending the last DTMF digit started by startDtmf().
+     * stopDtmf() without preceding startDtmf() must be ignored.
+     */
+    public void stopDtmf() {
+        try {
+            miSession.stopDtmf();
+        } catch (RemoteException e) {
+            Log.e(TAG, "Failed to stop DTMF: " + e);
+        }
+    }
+
+    /**
      * Send RTP header extension to the other party in the next RTP packet.
      *
      * @param extensions List of RTP header extensions to be transmitted