diff --git a/media/codecs/g711/decoder/Android.bp b/media/codecs/g711/decoder/Android.bp
index 377833f..efff60b 100644
--- a/media/codecs/g711/decoder/Android.bp
+++ b/media/codecs/g711/decoder/Android.bp
@@ -36,6 +36,7 @@
         cfi: true,
     },
     apex_available: ["com.android.media.swcodec"],
+    min_sdk_version: "29",
 
     target: {
         darwin: {
diff --git a/media/libeffects/preprocessing/PreProcessing.cpp b/media/libeffects/preprocessing/PreProcessing.cpp
index 5fab5be..c7afe2f 100644
--- a/media/libeffects/preprocessing/PreProcessing.cpp
+++ b/media/libeffects/preprocessing/PreProcessing.cpp
@@ -1240,9 +1240,9 @@
             memcpy(outBuffer->s16,
                   session->outBuf,
                   fr * session->outChannelCount * sizeof(int16_t));
-            memcpy(session->outBuf,
-                  session->outBuf + fr * session->outChannelCount,
-                  (session->framesOut - fr) * session->outChannelCount * sizeof(int16_t));
+            memmove(session->outBuf,
+                    session->outBuf + fr * session->outChannelCount,
+                    (session->framesOut - fr) * session->outChannelCount * sizeof(int16_t));
             session->framesOut -= fr;
             framesWr += fr;
         }
@@ -1303,9 +1303,9 @@
                                                         session->procFrame->data_,
                                                         &frOut);
             }
-            memcpy(session->inBuf,
-                   session->inBuf + frIn * session->inChannelCount,
-                   (session->framesIn - frIn) * session->inChannelCount * sizeof(int16_t));
+            memmove(session->inBuf,
+                    session->inBuf + frIn * session->inChannelCount,
+                    (session->framesIn - frIn) * session->inChannelCount * sizeof(int16_t));
             session->framesIn -= frIn;
         } else {
             size_t fr = session->frameCount - session->framesIn;
@@ -1381,9 +1381,9 @@
         memcpy(outBuffer->s16 + framesWr * session->outChannelCount,
               session->outBuf,
               fr * session->outChannelCount * sizeof(int16_t));
-        memcpy(session->outBuf,
-              session->outBuf + fr * session->outChannelCount,
-              (session->framesOut - fr) * session->outChannelCount * sizeof(int16_t));
+        memmove(session->outBuf,
+                session->outBuf + fr * session->outChannelCount,
+                (session->framesOut - fr) * session->outChannelCount * sizeof(int16_t));
         session->framesOut -= fr;
         outBuffer->frameCount += fr;
 
@@ -1837,9 +1837,9 @@
                                                         session->revFrame->data_,
                                                         &frOut);
             }
-            memcpy(session->revBuf,
-                   session->revBuf + frIn * session->inChannelCount,
-                   (session->framesRev - frIn) * session->inChannelCount * sizeof(int16_t));
+            memmove(session->revBuf,
+                    session->revBuf + frIn * session->inChannelCount,
+                    (session->framesRev - frIn) * session->inChannelCount * sizeof(int16_t));
             session->framesRev -= frIn;
         } else {
             size_t fr = session->frameCount - session->framesRev;
diff --git a/media/libmedia/Android.bp b/media/libmedia/Android.bp
index 0b41b42..e276508 100644
--- a/media/libmedia/Android.bp
+++ b/media/libmedia/Android.bp
@@ -30,6 +30,7 @@
         "//apex_available:platform",
         "com.android.media",
     ],
+    min_sdk_version: "29",
 }
 
 filegroup {
diff --git a/media/ndk/include/media/NdkMediaCodec.h b/media/ndk/include/media/NdkMediaCodec.h
index 8fb6a87..80d5d50 100644
--- a/media/ndk/include/media/NdkMediaCodec.h
+++ b/media/ndk/include/media/NdkMediaCodec.h
@@ -114,12 +114,12 @@
         int32_t actionCode,
         const char *detail);
 
-struct AMediaCodecOnAsyncNotifyCallback {
+typedef struct AMediaCodecOnAsyncNotifyCallback {
       AMediaCodecOnAsyncInputAvailable  onAsyncInputAvailable;
       AMediaCodecOnAsyncOutputAvailable onAsyncOutputAvailable;
       AMediaCodecOnAsyncFormatChanged   onAsyncFormatChanged;
       AMediaCodecOnAsyncError           onAsyncError;
-};
+} AMediaCodecOnAsyncNotifyCallback;
 
 #if __ANDROID_API__ >= 21