diff --git a/apex/Android.bp b/apex/Android.bp
index 259558c..c1ef3d8 100644
--- a/apex/Android.bp
+++ b/apex/Android.bp
@@ -44,8 +44,15 @@
 
     // Use a custom AndroidManifest.xml used for API targeting.
     androidManifest: ":com.android.media-androidManifest",
+
+    // IMPORTANT: For the APEX to be installed on Android 10 (API 29),
+    // min_sdk_version should be 29. This enables the build system to make
+    // sure the package compatible to Android 10 in two ways:
+    // - build the APEX package compatible to Android 10
+    //   so that the package can be installed.
+    // - build artifacts (lib/javalib/bin) against Android 10 SDK
+    //   so that the artifacts can run.
     min_sdk_version: "29",
-    legacy_android10_support: true,
 }
 
 apex {
@@ -84,8 +91,15 @@
 
     // Use a custom AndroidManifest.xml used for API targeting.
     androidManifest: ":com.android.media.swcodec-androidManifest",
+
+    // IMPORTANT: For the APEX to be installed on Android 10 (API 29),
+    // min_sdk_version should be 29. This enables the build system to make
+    // sure the package compatible to Android 10 in two ways:
+    // - build the APEX package compatible to Android 10
+    //   so that the package can be installed.
+    // - build artifacts (lib/javalib/bin) against Android 10 SDK
+    //   so that the artifacts can run.
     min_sdk_version: "29",
-    legacy_android10_support: true,
 }
 
 prebuilt_etc {
diff --git a/camera/ndk/impl/ACameraMetadata.cpp b/camera/ndk/impl/ACameraMetadata.cpp
index 1bbb9c2..446ca4f 100644
--- a/camera/ndk/impl/ACameraMetadata.cpp
+++ b/camera/ndk/impl/ACameraMetadata.cpp
@@ -139,12 +139,20 @@
     const int STREAM_WIDTH_OFFSET = 1;
     const int STREAM_HEIGHT_OFFSET = 2;
     const int STREAM_DURATION_OFFSET = 3;
+
     camera_metadata_entry entry = mData->find(tag);
-    if (entry.count == 0 || entry.count % 4 || entry.type != TYPE_INT64) {
+
+    if (entry.count == 0) {
+        // Duration keys can be missing when corresponding capture feature is not supported
+        return;
+    }
+
+    if (entry.count % 4 || entry.type != TYPE_INT64) {
         ALOGE("%s: malformed duration key %d! count %zu, type %d",
                 __FUNCTION__, tag, entry.count, entry.type);
         return;
     }
+
     Vector<int64_t> filteredDurations;
     filteredDurations.setCapacity(entry.count * 2);
 
diff --git a/media/libaaudio/src/utility/FixedBlockAdapter.cpp b/media/libaaudio/src/utility/FixedBlockAdapter.cpp
index 63495f0..b55f827 100644
--- a/media/libaaudio/src/utility/FixedBlockAdapter.cpp
+++ b/media/libaaudio/src/utility/FixedBlockAdapter.cpp
@@ -18,22 +18,17 @@
 
 #include "FixedBlockAdapter.h"
 
-FixedBlockAdapter::~FixedBlockAdapter() {
-    close();
-}
-
 int32_t FixedBlockAdapter::open(int32_t bytesPerFixedBlock)
 {
     mSize = bytesPerFixedBlock;
-    mStorage = new uint8_t[bytesPerFixedBlock];
+    mStorage = std::make_unique<uint8_t[]>(bytesPerFixedBlock);
     mPosition = 0;
     return 0;
 }
 
 int32_t FixedBlockAdapter::close()
 {
-    delete[] mStorage;
-    mStorage = nullptr;
+    mStorage.reset();
     mSize = 0;
     mPosition = 0;
     return 0;
diff --git a/media/libaaudio/src/utility/FixedBlockAdapter.h b/media/libaaudio/src/utility/FixedBlockAdapter.h
index 7008b25..4dc7e68 100644
--- a/media/libaaudio/src/utility/FixedBlockAdapter.h
+++ b/media/libaaudio/src/utility/FixedBlockAdapter.h
@@ -17,6 +17,7 @@
 #ifndef AAUDIO_FIXED_BLOCK_ADAPTER_H
 #define AAUDIO_FIXED_BLOCK_ADAPTER_H
 
+#include <memory>
 #include <stdio.h>
 
 /**
@@ -37,7 +38,7 @@
     FixedBlockAdapter(FixedBlockProcessor &fixedBlockProcessor)
     : mFixedBlockProcessor(fixedBlockProcessor) {}
 
-    virtual ~FixedBlockAdapter();
+    virtual ~FixedBlockAdapter() = default;
 
     /**
      * Allocate internal resources needed for buffering data.
@@ -63,7 +64,7 @@
 
 protected:
     FixedBlockProcessor  &mFixedBlockProcessor;
-    uint8_t              *mStorage = nullptr;    // Store data here while assembling buffers.
+    std::unique_ptr<uint8_t[]> mStorage;         // Store data here while assembling buffers.
     int32_t               mSize = 0;             // Size in bytes of the fixed size buffer.
     int32_t               mPosition = 0;         // Offset of the last byte read or written.
 };
diff --git a/media/libaaudio/src/utility/FixedBlockReader.cpp b/media/libaaudio/src/utility/FixedBlockReader.cpp
index 21ea70e..7931fa0 100644
--- a/media/libaaudio/src/utility/FixedBlockReader.cpp
+++ b/media/libaaudio/src/utility/FixedBlockReader.cpp
@@ -39,7 +39,7 @@
     if (bytesToRead > dataAvailable) {
         bytesToRead = dataAvailable;
     }
-    memcpy(buffer, mStorage + mPosition, bytesToRead);
+    memcpy(buffer, &mStorage[mPosition], bytesToRead);
     mPosition += bytesToRead;
     return bytesToRead;
 }
@@ -60,7 +60,7 @@
             bytesLeft -= mSize;
         } else {
             // Just need a partial block so we have to use storage.
-            result = mFixedBlockProcessor.onProcessFixedBlock(mStorage, mSize);
+            result = mFixedBlockProcessor.onProcessFixedBlock(mStorage.get(), mSize);
             mPosition = 0;
         }
     }
diff --git a/media/libaaudio/src/utility/FixedBlockWriter.cpp b/media/libaaudio/src/utility/FixedBlockWriter.cpp
index 2ce8046..afb83c1 100644
--- a/media/libaaudio/src/utility/FixedBlockWriter.cpp
+++ b/media/libaaudio/src/utility/FixedBlockWriter.cpp
@@ -30,7 +30,7 @@
     if (bytesToStore > roomAvailable) {
         bytesToStore = roomAvailable;
     }
-    memcpy(mStorage + mPosition, buffer, bytesToStore);
+    memcpy(&mStorage[mPosition], buffer, bytesToStore);
     mPosition += bytesToStore;
     return bytesToStore;
 }
@@ -46,7 +46,7 @@
         bytesLeft -= bytesWritten;
         // If storage full then flush it out
         if (mPosition == mSize) {
-            result = mFixedBlockProcessor.onProcessFixedBlock(mStorage, mSize);
+            result = mFixedBlockProcessor.onProcessFixedBlock(mStorage.get(), mSize);
             mPosition = 0;
         }
     }
diff --git a/media/libstagefright/codecs/amrwb/Android.bp b/media/libstagefright/codecs/amrwb/Android.bp
index 88cf7f2..d8cb568 100644
--- a/media/libstagefright/codecs/amrwb/Android.bp
+++ b/media/libstagefright/codecs/amrwb/Android.bp
@@ -1,6 +1,7 @@
 cc_library_static {
     name: "libstagefright_amrwbdec",
     vendor_available: true,
+    host_supported: true,
 
     srcs: [
         "src/agc2_amr_wb.cpp",
@@ -44,8 +45,6 @@
         "src/weight_amrwb_lpc.cpp",
     ],
 
-    header_libs: ["libstagefright_headers"],
-
     export_include_dirs: [
         "src",
         "include",
@@ -63,12 +62,19 @@
             "signed-integer-overflow",
         ],
     },
+
+    target: {
+        darwin: {
+            enabled: false,
+        },
+    },
 }
 
 //###############################################################################
 cc_test {
     name: "libstagefright_amrwbdec_test",
     gtest: false,
+    host_supported: true,
 
     srcs: ["test/amrwbdec_test.cpp"],
 
@@ -88,4 +94,10 @@
             "signed-integer-overflow",
         ],
     },
+
+    target: {
+        darwin: {
+            enabled: false,
+        },
+    },
 }
diff --git a/media/libstagefright/codecs/amrwb/fuzzer/Android.bp b/media/libstagefright/codecs/amrwb/fuzzer/Android.bp
new file mode 100644
index 0000000..46f77e3
--- /dev/null
+++ b/media/libstagefright/codecs/amrwb/fuzzer/Android.bp
@@ -0,0 +1,35 @@
+/******************************************************************************
+ *
+ * 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.
+ *
+ *****************************************************************************
+ * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
+ */
+
+cc_fuzz {
+    name: "amrwb_dec_fuzzer",
+    host_supported: true,
+    srcs: [
+        "amrwb_dec_fuzzer.cpp",
+    ],
+    static_libs: [
+        "libstagefright_amrwbdec",
+    ],
+    target: {
+        darwin: {
+            enabled: false,
+        },
+    },
+}
diff --git a/media/libstagefright/codecs/amrwb/fuzzer/README.md b/media/libstagefright/codecs/amrwb/fuzzer/README.md
new file mode 100644
index 0000000..de45784
--- /dev/null
+++ b/media/libstagefright/codecs/amrwb/fuzzer/README.md
@@ -0,0 +1,61 @@
+# Fuzzer for libstagefright_amrwbdec decoder
+
+## Plugin Design Considerations
+The fuzzer plugin for AMR-WB is designed based on the understanding of the
+codec and tries to achieve the following:
+
+##### Maximize code coverage
+The configuration parameters are not hardcoded, but instead selected based on
+incoming data. This ensures more code paths are reached by the fuzzer.
+
+AMR-WB supports the following parameters:
+1. Quality (parameter name: `quality`)
+2. Mode (parameter name: `mode`)
+
+| Parameter| Valid Values| Configured Value|
+|------------- |-------------| ----- |
+| `quality` | 0. `Bad Quality` 1. `Good quality` | Bit 0 (LSB) of 1st byte of data. |
+| `mode`   | 0. `MODE_7k` 1. `MODE_9k` 2. `MODE_12k` 3. `MODE_14k`  4. `MODE_16k ` 5. `MODE_18k` 6. `MODE_20k` 7. `MODE_23k` 8. `MODE_24k` 9. `MRDTX`  | Bits 3, 4, 5 and 6 of 1st byte of data. |
+
+This also ensures that the plugin is always deterministic for any given input.
+
+##### Maximize utilization of input data
+The plugin feeds the entire input data to the codec using a loop.
+If the decode operation was successful, the input is advanced by the frame size
+which is based on `mode` and `quality` selected.
+If the decode operation was un-successful, the input is still advanced by frame size so
+that the fuzzer can proceed to feed the next frame.
+
+This ensures that the plugin tolerates any kind of input (empty, huge,
+malformed, etc) and doesnt `exit()` on any input and thereby increasing the
+chance of identifying vulnerabilities.
+
+## Build
+
+This describes steps to build amrwb_dec_fuzzer binary.
+
+### Android
+
+#### Steps to build
+Build the fuzzer
+```
+  $ mm -j$(nproc) amrwb_dec_fuzzer
+```
+
+#### Steps to run
+Create a directory CORPUS_DIR and copy some amrwb files to that folder
+Push this directory to device.
+
+To run on device
+```
+  $ adb sync data
+  $ adb shell /data/fuzz/arm64/amrwb_dec_fuzzer/amrwb_dec_fuzzer CORPUS_DIR
+```
+To run on host
+```
+  $ $ANDROID_HOST_OUT/fuzz/x86_64/amrwb_dec_fuzzer/amrwb_dec_fuzzer CORPUS_DIR
+```
+
+## References:
+ * http://llvm.org/docs/LibFuzzer.html
+ * https://github.com/google/oss-fuzz
diff --git a/media/libstagefright/codecs/amrwb/fuzzer/amrwb_dec_fuzzer.cpp b/media/libstagefright/codecs/amrwb/fuzzer/amrwb_dec_fuzzer.cpp
new file mode 100644
index 0000000..6dc0270
--- /dev/null
+++ b/media/libstagefright/codecs/amrwb/fuzzer/amrwb_dec_fuzzer.cpp
@@ -0,0 +1,110 @@
+/******************************************************************************
+ *
+ * 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.
+ *
+ *****************************************************************************
+ * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
+ */
+#include <malloc.h>
+#include <string.h>
+#include <algorithm>
+#include "pvamrwbdecoder.h"
+#include "pvamrwbdecoder_api.h"
+
+// Constants for AMR-WB.
+constexpr int32_t kSamplesPerFrame = 320;
+constexpr int32_t kBitsPerSample = 16;
+constexpr int32_t kMaxSourceDataUnitSize = KAMRWB_NB_BITS_MAX * sizeof(int16_t);
+constexpr int32_t kOutputBufferSize = kSamplesPerFrame * kBitsPerSample / 8;
+constexpr int32_t kFrameSizes[16] = {17, 23, 32, 36, 40, 46, 50, 58,
+                                     60, 17, 23, 32, 36, 40, 46, 50};
+
+class Codec {
+ public:
+  Codec() = default;
+  ~Codec() { deInitDecoder(); }
+  bool initDecoder();
+  void decodeFrames(const uint8_t *data, size_t size);
+  void deInitDecoder();
+
+ private:
+  void *mAmrHandle = nullptr;
+  int16_t *mDecoderCookie = nullptr;
+  void *mDecoderBuffer = nullptr;
+};
+
+bool Codec::initDecoder() {
+  mDecoderBuffer = malloc(pvDecoder_AmrWbMemRequirements());
+  if (mDecoderBuffer) {
+    pvDecoder_AmrWb_Init(&mAmrHandle, mDecoderBuffer, &mDecoderCookie);
+    return true;
+  } else {
+    return false;
+  }
+}
+
+void Codec::deInitDecoder() {
+  if (mDecoderBuffer) {
+    free(mDecoderBuffer);
+    mDecoderBuffer = nullptr;
+  }
+  mAmrHandle = nullptr;
+  mDecoderCookie = nullptr;
+}
+
+void Codec::decodeFrames(const uint8_t *data, size_t size) {
+  while (size > 0) {
+    uint8_t modeByte = *data;
+    bool quality = modeByte & 0x01;
+    int16 mode = ((modeByte >> 3) & 0x0f);
+    ++data;
+    --size;
+    int32_t frameSize = kFrameSizes[mode];
+    int16_t inputSampleBuf[kMaxSourceDataUnitSize];
+    uint8_t *inputBuf = new uint8_t[frameSize];
+    if (!inputBuf) {
+      return;
+    }
+    int32_t minSize = std::min((int32_t)size, frameSize);
+    memcpy(inputBuf, data, minSize);
+    int16 frameMode = mode;
+    int16 frameType;
+    RX_State_wb rx_state;
+    mime_unsorting(inputBuf, inputSampleBuf, &frameType, &frameMode, quality, &rx_state);
+
+    int16_t numSamplesOutput;
+    int16_t outputBuf[kOutputBufferSize];
+    pvDecoder_AmrWb(frameMode, inputSampleBuf, outputBuf, &numSamplesOutput, mDecoderBuffer,
+                    frameType, mDecoderCookie);
+    data += minSize;
+    size -= minSize;
+    delete[] inputBuf;
+  }
+}
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
+  if (size < 2) {
+    return 0;
+  }
+  Codec *codec = new Codec();
+  if (!codec) {
+    return 0;
+  }
+  if (codec->initDecoder()) {
+    codec->decodeFrames(data, size);
+  }
+  delete codec;
+  return 0;
+}