Add Mpeg4H263DecoderTest to mts test_suite

Also add compile_multilib as mts build requires that

Bug: 183561217
Test: mts mts-media -m Mpeg4H263DecoderTest
Test: atest Mpeg4H263DecoderTest -- \
 --enable-module-dynamic-download=true

Change-Id: Iee84b22e262772ecc8efedf086bda1a025010790
diff --git a/media/codecs/m4v_h263/dec/test/Android.bp b/media/codecs/m4v_h263/dec/test/Android.bp
index 9459ed1..6eed66f 100644
--- a/media/codecs/m4v_h263/dec/test/Android.bp
+++ b/media/codecs/m4v_h263/dec/test/Android.bp
@@ -28,7 +28,24 @@
 cc_test {
     name: "Mpeg4H263DecoderTest",
     gtest: true,
-    test_suites: ["device-tests"],
+
+    test_suites: [
+        "device-tests",
+        "mts",
+    ],
+
+    // Support multilib variants (using different suffix per sub-architecture), which is needed on
+    // build targets with secondary architectures, as the MTS test suite packaging logic flattens
+    // all test artifacts into a single `testcases` directory.
+    compile_multilib: "both",
+    multilib: {
+        lib32: {
+            suffix: "32",
+        },
+        lib64: {
+            suffix: "64",
+        },
+    },
 
     srcs: [
         "Mpeg4H263DecoderTest.cpp",
diff --git a/media/codecs/m4v_h263/dec/test/AndroidTest.xml b/media/codecs/m4v_h263/dec/test/AndroidTest.xml
index f572b0c..8bb4d1c 100755
--- a/media/codecs/m4v_h263/dec/test/AndroidTest.xml
+++ b/media/codecs/m4v_h263/dec/test/AndroidTest.xml
@@ -15,9 +15,10 @@
 -->
 <configuration description="Test module config for Mpeg4H263 Decoder unit tests">
     <option name="test-suite-tag" value="Mpeg4H263DecoderTest" />
-    <target_preparer class="com.android.tradefed.targetprep.PushFilePreparer">
+    <target_preparer class="com.android.compatibility.common.tradefed.targetprep.FilePusher">
         <option name="cleanup" value="true" />
         <option name="push" value="Mpeg4H263DecoderTest->/data/local/tmp/Mpeg4H263DecoderTest" />
+        <option name="append-bitness" value="true" />
         <option name="push-file"
             key="https://storage.googleapis.com/android_media/frameworks/av/media/libstagefright/codecs/m4v_h263/dec/test/Mpeg4H263Decoder-1.1.zip?unzip=true"
             value="/data/local/tmp/Mpeg4H263DecoderTestRes/" />