CSD: add callback interface for com with native

Interface currently supports the reporting of the momentary exposure
warning.

Test: manual
Bug: 257238734

Change-Id: I39f043660ee05a4d6454267270ebb49a6dc3ab20

Android.bp

@@ -404,6 +404,7 @@ java_defaults {
         "framework-permission-aidl-java",
         "spatializer-aidl-java",
         "audiopolicy-types-aidl-java",
+        "sounddose-aidl-java",
     ],
 }
 

core/jni/android_media_AudioSystem.cpp

@@ -2868,6 +2868,15 @@ static jboolean android_media_AudioSystem_canBeSpatialized(JNIEnv *env, jobject
     return canBeSpatialized;
 }
 
+static jint android_media_AudioSystem_registerSoundDoseCallback(JNIEnv *env, jobject thiz,
+                                                                    jobject jISoundDoseCallback) {
+    sp<media::ISoundDoseCallback> nISoundDoseCallback = interface_cast<media::ISoundDoseCallback>(
+            ibinderForJavaObject(env, jISoundDoseCallback));
+
+    return static_cast<jint>(
+            check_AudioSystem_Command(AudioSystem::registerSoundDoseCallback(nISoundDoseCallback)));
+}
+
 // keep these values in sync with AudioSystem.java
 #define DIRECT_NOT_SUPPORTED 0
 #define DIRECT_OFFLOAD_SUPPORTED 1
@@ -3104,6 +3113,8 @@ static const JNINativeMethod gMethods[] =
           "(Landroid/media/AudioAttributes;Landroid/media/AudioFormat;"
           "[Landroid/media/AudioDeviceAttributes;)Z",
           (void *)android_media_AudioSystem_canBeSpatialized},
+         {"registerSoundDoseCallback", "(Landroid/media/ISoundDoseCallback;)I",
+          (void *)android_media_AudioSystem_registerSoundDoseCallback},
          {"getDirectPlaybackSupport",
           "(Landroid/media/AudioFormat;Landroid/media/AudioAttributes;)I",
           (void *)android_media_AudioSystem_getDirectPlaybackSupport},

media/java/android/media/AudioSystem.java

@@ -2258,6 +2258,14 @@ public class AudioSystem
                                               AudioFormat format,
                                               AudioDeviceAttributes[] devices);
 
+    /**
+     * @hide
+     * Register the sound dose callback with the audio server.
+     *
+     * @return {@link #SUCCESS} if the callback was registered successfully.
+     */
+    public static native int registerSoundDoseCallback(ISoundDoseCallback callback);
+
     /**
      * @hide
      * @param attributes audio attributes describing the playback use case

services/core/java/com/android/server/audio/AudioSystemAdapter.java

@@ -21,6 +21,7 @@ import android.annotation.Nullable;
 import android.media.AudioAttributes;
 import android.media.AudioDeviceAttributes;
 import android.media.AudioSystem;
+import android.media.ISoundDoseCallback;
 import android.media.audiopolicy.AudioMix;
 import android.os.SystemClock;
 import android.util.Log;
@@ -494,6 +495,15 @@ public class AudioSystemAdapter implements AudioSystem.RoutingUpdateCallback,
         return AudioSystem.removeUserIdDeviceAffinities(userId);
     }
 
+    /**
+     * Same as {@link AudioSystem#registerSoundDoseCallback(ISoundDoseCallback)}
+     * @param callback
+     * @return
+     */
+    public int registerSoundDoseCallback(ISoundDoseCallback callback) {
+        return AudioSystem.registerSoundDoseCallback(callback);
+    }
+
     /**
      * Part of AudioService dump
      * @param pw

services/core/java/com/android/server/audio/SoundDoseHelper.java

@@ -27,6 +27,7 @@ import android.app.PendingIntent;
 import android.content.Context;
 import android.content.Intent;
 import android.media.AudioSystem;
+import android.media.ISoundDoseCallback;
 import android.os.Binder;
 import android.os.Message;
 import android.os.SystemClock;
@@ -131,6 +132,14 @@ public class SoundDoseHelper {
 
     private final Context mContext;
 
+    private final ISoundDoseCallback.Stub mSoundDoseCallback = new ISoundDoseCallback.Stub() {
+        @Override
+        public void onMomentaryExposure(float currentMel, int deviceId) {
+            Log.w(TAG, "DeviceId " + deviceId + " triggered momentary exposure with value: "
+                    + currentMel);
+        }
+    };
+
     SoundDoseHelper(@NonNull AudioService audioService, Context context,
             @NonNull AudioHandler audioHandler,
             @NonNull SettingsAdapter settings,
@@ -145,6 +154,7 @@ public class SoundDoseHelper {
         mSafeMediaVolumeState = mSettings.getGlobalInt(audioService.getContentResolver(),
                 Settings.Global.AUDIO_SAFE_VOLUME_STATE, 0);
         if (USE_CSD_FOR_SAFE_HEARING) {
+            AudioSystem.registerSoundDoseCallback(mSoundDoseCallback);
             mSafeMediaVolumeState = SAFE_MEDIA_VOLUME_DISABLED;
         }