Added test to check for AAC_LC offload

Added test to check if offloading of AAC_LC codec works. It
is done only for Wear devices since there is a known issue on
phones.

Bug: 271055403
Test: m cts
in cts-tradefed: run cts -m CtsMediaAudioTestCases -t android.media.audio.cts.AudioTrackOffloadTest

Change-Id: I558da3e3cb470558a73c0265302713e97d10125f
(cherry picked from commit fc47777)

Author: Sundeep Gopalaswamy

tests/tests/media/audio/res/raw/sine40dblong_44k_128kbps_LC.m4a

@@ -22,6 +22,7 @@
 
 import android.annotation.Nullable;
 import android.annotation.RawRes;
+import android.content.pm.PackageManager;
 import android.content.res.AssetFileDescriptor;
 import android.media.AudioAttributes;
 import android.media.AudioFormat;
@@ -59,6 +60,19 @@ public class AudioTrackOffloadTest extends CtsAndroidTestCase {
 
     private static final AudioAttributes DEFAULT_ATTR = new AudioAttributes.Builder().build();
 
+    // flag to indicate if AAC related tests need to be run or not.
+    private boolean mTestAacSupport = false;
+
+    @Override
+    protected void setUp() throws Exception {
+        super.setUp();
+        boolean isWatch = getContext().getPackageManager()
+                            .hasSystemFeature(PackageManager.FEATURE_WATCH);
+        if (isWatch) {
+            mTestAacSupport = true;
+        }
+    }
+
     public void testIsOffloadSupportedNullFormat() throws Exception {
         try {
             final boolean offloadableFormat = AudioManager.isOffloadedPlaybackSupported(null,
@@ -125,6 +139,15 @@ public void testOpusAudioTrackOffload() throws Exception {
                 getAudioFormatWithEncoding(AudioFormat.ENCODING_OPUS));
     }
 
+    public void testAacLCAudioTrackOffload() throws Exception {
+        if (!mTestAacSupport) {
+            return;
+        }
+        testAudioTrackOffload(R.raw.sine40dblong_44k_128kbps_LC,
+                /* bitRateInkbps= */ 128,
+                getAudioFormatWithEncoding(AudioFormat.ENCODING_AAC_LC));
+    }
+
     @CddTest(requirement="5.5.4")
     public void testGaplessMP3AudioTrackOffload() throws Exception {
         // sine882hz3s has a gapless delay of 576 and padding of 756.