diff --git a/include/media/stagefright/foundation/ABuffer.h b/include/media/stagefright/foundation/ABuffer.h
index 28f0aed..602f7ab 100644
--- a/include/media/stagefright/foundation/ABuffer.h
+++ b/include/media/stagefright/foundation/ABuffer.h
@@ -42,6 +42,9 @@
 
     void setRange(size_t offset, size_t size);
 
+    // create buffer from dup of some memory block
+    static sp<ABuffer> CreateAsCopy(const void *data, size_t capacity);
+
     void setInt32Data(int32_t data) { mInt32Data = data; }
     int32_t int32Data() const { return mInt32Data; }
 
diff --git a/media/libstagefright/foundation/ABuffer.cpp b/media/libstagefright/foundation/ABuffer.cpp
index 6173db4..c93c7e8 100644
--- a/media/libstagefright/foundation/ABuffer.cpp
+++ b/media/libstagefright/foundation/ABuffer.cpp
@@ -40,6 +40,14 @@
       mOwnsData(false) {
 }
 
+// static
+sp<ABuffer> ABuffer::CreateAsCopy(const void *data, size_t capacity)
+{
+    sp<ABuffer> res = new ABuffer(capacity);
+    memcpy(res->data(), data, capacity);
+    return res;
+}
+
 ABuffer::~ABuffer() {
     if (mOwnsData) {
         if (mData != NULL) {