Send Sms Memory Availability notification to ImsService

- Send Memory Availability notification to Ims SMS Service
- Add onMemoryAvailble Api to IImsMmtelFeature.aidl
- Bug: b/240883268

Test: Tested Memory full and Not Full conditions in Pixel6
Change-Id: Iad053fd97e652254e697c3de0b96bb33bb5307d8

core/api/system-current.txt

@@ -16029,6 +16029,7 @@ package android.telephony.ims.stub {
     method public void acknowledgeSms(int, @IntRange(from=0, to=65535) int, int, @NonNull byte[]);
     method public void acknowledgeSmsReport(int, @IntRange(from=0, to=65535) int, int);
     method public String getSmsFormat();
+    method public void onMemoryAvailable(int);
     method public void onReady();
     method @Deprecated public final void onSendSmsResult(int, @IntRange(from=0, to=65535) int, int, int) throws java.lang.RuntimeException;
     method public final void onSendSmsResultError(int, @IntRange(from=0, to=65535) int, int, int, int) throws java.lang.RuntimeException;

telephony/java/android/telephony/ims/aidl/IImsMmTelFeature.aidl

@@ -64,6 +64,7 @@ interface IImsMmTelFeature {
     void setSmsListener(IImsSmsListener l);
     oneway void sendSms(in int token, int messageRef, String format, String smsc, boolean retry,
             in byte[] pdu);
+    oneway void onMemoryAvailable(int token);
     oneway void acknowledgeSms(int token, int messageRef, int result);
     oneway void acknowledgeSmsWithPdu(int token, int messageRef, int result, in byte[] pdu);
     oneway void acknowledgeSmsReport(int token, int messageRef, int result);

telephony/java/android/telephony/ims/feature/MmTelFeature.java

@@ -268,6 +268,12 @@ public class MmTelFeature extends ImsFeature {
                     .sendSms(token, messageRef, format, smsc, retry, pdu), "sendSms");
         }
 
+        @Override
+        public void onMemoryAvailable(int token) {
+            executeMethodAsyncNoException(() -> MmTelFeature.this
+                    .onMemoryAvailable(token), "onMemoryAvailable");
+        }
+
         @Override
         public void acknowledgeSms(int token, int messageRef, int result) {
             executeMethodAsyncNoException(() -> MmTelFeature.this
@@ -1088,6 +1094,10 @@ public class MmTelFeature extends ImsFeature {
         getSmsImplementation().sendSms(token, messageRef, format, smsc, isRetry, pdu);
     }
 
+    private void onMemoryAvailable(int token) {
+        getSmsImplementation().onMemoryAvailable(token);
+    }
+
     private void acknowledgeSms(int token, int messageRef,
             @ImsSmsImplBase.DeliverStatusResult int result) {
         getSmsImplementation().acknowledgeSms(token, messageRef, result);

telephony/java/android/telephony/ims/stub/ImsSmsImplBase.java

@@ -170,6 +170,20 @@ public class ImsSmsImplBase {
         }
     }
 
+    /**
+     * This method will be triggered by the platform when memory becomes available to receive SMS
+     * after a memory full event. This method should be implemented by IMS providers to
+     * send RP-SMMA notification from SMS Relay Layer to server over IMS as per section 7.3.2 of
+     * TS 124.11. Once the RP-SMMA Notification is sent to the network. The network will deliver all
+     * the pending messages which failed due to Unavailability of Memory.
+     *
+     * @param token unique token generated in {@link ImsSmsDispatcher#onMemoryAvailable(void)} that
+     *  should be used when triggering callbacks for this specific message.
+     */
+    public void onMemoryAvailable(int token) {
+        // Base Implementation - Should be overridden
+    }
+
     /**
      * This method will be triggered by the platform after
      * {@link #onSmsReceived(int, String, byte[])} has been called to deliver the result to the IMS