diff --git a/media/ndk/Android.bp b/media/ndk/Android.bp
index 755d6e6..ee4def5 100644
--- a/media/ndk/Android.bp
+++ b/media/ndk/Android.bp
@@ -116,7 +116,10 @@
 
     export_header_lib_headers: ["jni_headers"],
 
-    export_include_dirs: ["include"],
+    export_include_dirs: [
+        "include",
+        "include_platform",
+    ],
 
     export_shared_lib_headers: [
         "libgui",
diff --git a/media/ndk/NdkMediaCodec.cpp b/media/ndk/NdkMediaCodec.cpp
index d771095..1055dc4 100644
--- a/media/ndk/NdkMediaCodec.cpp
+++ b/media/ndk/NdkMediaCodec.cpp
@@ -19,7 +19,7 @@
 //#define LOG_NDEBUG 0
 #define LOG_TAG "NdkMediaCodec"
 
-#include <media/NdkMediaCodec.h>
+#include <media/NdkMediaCodecPlatform.h>
 #include <media/NdkMediaError.h>
 #include <media/NdkMediaFormatPriv.h>
 #include "NdkMediaCryptoPriv.h"
@@ -312,7 +312,11 @@
 
 extern "C" {
 
-static AMediaCodec * createAMediaCodec(const char *name, bool name_is_type, bool encoder) {
+static AMediaCodec * createAMediaCodec(const char *name,
+                                       bool name_is_type,
+                                       bool encoder,
+                                       pid_t pid = android::MediaCodec::kNoPid,
+                                       uid_t uid = android::MediaCodec::kNoUid) {
     AMediaCodec *mData = new AMediaCodec();
     mData->mLooper = new ALooper;
     mData->mLooper->setName("NDK MediaCodec_looper");
@@ -326,9 +330,20 @@
         return NULL;
     }
     if (name_is_type) {
-        mData->mCodec = android::MediaCodec::CreateByType(mData->mLooper, name, encoder);
+        mData->mCodec = android::MediaCodec::CreateByType(
+                mData->mLooper,
+                name,
+                encoder,
+                nullptr /* err */,
+                pid,
+                uid);
     } else {
-        mData->mCodec = android::MediaCodec::CreateByComponentName(mData->mLooper, name);
+        mData->mCodec = android::MediaCodec::CreateByComponentName(
+                mData->mLooper,
+                name,
+                nullptr /* err */,
+                pid,
+                uid);
     }
     if (mData->mCodec == NULL) {  // failed to create codec
         AMediaCodec_delete(mData);
@@ -348,17 +363,38 @@
 
 EXPORT
 AMediaCodec* AMediaCodec_createCodecByName(const char *name) {
-    return createAMediaCodec(name, false, false);
+    return createAMediaCodec(name, false /* name_is_type */, false /* encoder */);
 }
 
 EXPORT
 AMediaCodec* AMediaCodec_createDecoderByType(const char *mime_type) {
-    return createAMediaCodec(mime_type, true, false);
+    return createAMediaCodec(mime_type, true /* name_is_type */, false /* encoder */);
 }
 
 EXPORT
 AMediaCodec* AMediaCodec_createEncoderByType(const char *name) {
-    return createAMediaCodec(name, true, true);
+    return createAMediaCodec(name, true /* name_is_type */, true /* encoder */);
+}
+
+EXPORT
+AMediaCodec* AMediaCodec_createCodecByNameForClient(const char *name,
+                                                    pid_t pid,
+                                                    uid_t uid) {
+    return createAMediaCodec(name, false /* name_is_type */, false /* encoder */, pid, uid);
+}
+
+EXPORT
+AMediaCodec* AMediaCodec_createDecoderByTypeForClient(const char *mime_type,
+                                                      pid_t pid,
+                                                      uid_t uid) {
+    return createAMediaCodec(mime_type, true /* name_is_type */, false /* encoder */, pid, uid);
+}
+
+EXPORT
+AMediaCodec* AMediaCodec_createEncoderByTypeForClient(const char *name,
+                                                      pid_t pid,
+                                                      uid_t uid) {
+    return createAMediaCodec(name, true /* name_is_type */, true /* encoder */, pid, uid);
 }
 
 EXPORT
diff --git a/media/ndk/include_platform/media/NdkMediaCodecPlatform.h b/media/ndk/include_platform/media/NdkMediaCodecPlatform.h
new file mode 100644
index 0000000..608346d
--- /dev/null
+++ b/media/ndk/include_platform/media/NdkMediaCodecPlatform.h
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _NDK_MEDIA_CODEC_PLATFORM_H
+#define _NDK_MEDIA_CODEC_PLATFORM_H
+
+#include <stdint.h>
+#include <sys/cdefs.h>
+
+#include <media/NdkMediaCodec.h>
+
+__BEGIN_DECLS
+
+/**
+ * Special uid and pid values used with AMediaCodec_createCodecByNameForClient,
+ * AMediaCodec_createDecoderByTypeForClient and AMediaCodec_createEncoderByTypeForClient.
+ *
+ * Introduced in API 31.
+ */
+enum {
+    /**
+     * Uid value to indicate using calling uid.
+     */
+    AMEDIACODEC_CALLING_UID = -1,
+    /**
+     * Pid value to indicate using calling pid.
+     */
+    AMEDIACODEC_CALLING_PID = -1,
+};
+
+#if __ANDROID_API__ >= 31
+
+/**
+ * Create codec by name on behalf of a client.
+ *
+ * The usage is similar to AMediaCodec_createCodecByName(), except that the codec instance
+ * will be attributed to the client of {uid, pid}, instead of the caller.
+ *
+ * Only certain privileged users are allowed to specify {uid, pid} that's different from the
+ * caller's. Without the privilege, this API will behave the same as
+ * AMediaCodec_createCodecByName().
+ *
+ * Available since API level 31.
+ */
+AMediaCodec* AMediaCodec_createCodecByNameForClient(const char *name,
+                                                    pid_t pid,
+                                                    uid_t uid) __INTRODUCED_IN(31);
+
+/**
+ * Create codec by mime type on behalf of a client.
+ *
+ * The usage is similar to AMediaCodec_createDecoderByType(), except that the codec instance
+ * will be attributed to the client of {uid, pid}, instead of the caller.
+ *
+ * Only certain privileged users are allowed to specify {uid, pid} that's different from the
+ * caller's. Without the privilege, this API will behave the same as
+ * AMediaCodec_createDecoderByType().
+ *
+ * Available since API level 31.
+ */
+AMediaCodec* AMediaCodec_createDecoderByTypeForClient(const char *mime_type,
+                                                      pid_t pid,
+                                                      uid_t uid) __INTRODUCED_IN(31);
+
+/**
+ * Create encoder by name on behalf of a client.
+ *
+ * The usage is similar to AMediaCodec_createEncoderByType(), except that the codec instance
+ * will be attributed to the client of {uid, pid}, instead of the caller.
+ *
+ * Only certain privileged users are allowed to specify {uid, pid} that's different from the
+ * caller's. Without the privilege, this API will behave the same as
+ * AMediaCodec_createEncoderByType().
+ *
+ * Available since API level 31.
+ */
+AMediaCodec* AMediaCodec_createEncoderByTypeForClient(const char *mime_type,
+                                                      pid_t pid,
+                                                      uid_t uid) __INTRODUCED_IN(31);
+
+#endif // __ANDROID_API__ >= 31
+
+__END_DECLS
+
+#endif //_NDK_MEDIA_CODEC_PLATFORM_H
+
+/** @} */
diff --git a/media/ndk/libmediandk.map.txt b/media/ndk/libmediandk.map.txt
index 44c3e52..96f1710 100644
--- a/media/ndk/libmediandk.map.txt
+++ b/media/ndk/libmediandk.map.txt
@@ -165,8 +165,11 @@
     AMediaCodecCryptoInfo_setPattern; # introduced=24
     AMediaCodec_configure;
     AMediaCodec_createCodecByName;
+    AMediaCodec_createCodecByNameForClient; # apex #introduced = 31
     AMediaCodec_createDecoderByType;
+    AMediaCodec_createDecoderByTypeForClient; # apex #introduced = 31
     AMediaCodec_createEncoderByType;
+    AMediaCodec_createEncoderByTypeForClient; # apex #introduced = 31
     AMediaCodec_delete;
     AMediaCodec_dequeueInputBuffer;
     AMediaCodec_dequeueOutputBuffer;