diff --git a/camera/common/1.0/default/Android.bp b/camera/common/1.0/default/Android.bp
index f4390b2..3b8b239 100644
--- a/camera/common/1.0/default/Android.bp
+++ b/camera/common/1.0/default/Android.bp
@@ -8,7 +8,7 @@
         "CameraParameters.cpp",
         "VendorTagDescriptor.cpp",
         "HandleImporter.cpp",
-        "Exif.cpp"
+        "Exif.cpp",
     ],
     cflags: [
         "-Werror",
@@ -17,6 +17,7 @@
     ],
     shared_libs: [
         "liblog",
+        "libgralloctypes",
         "libhardware",
         "libcamera_metadata",
         "android.hardware.graphics.mapper@2.0",
@@ -25,6 +26,5 @@
         "libexif",
     ],
     include_dirs: ["system/media/private/camera/include"],
-    export_include_dirs : ["include"]
+    export_include_dirs: ["include"],
 }
-
diff --git a/camera/common/1.0/default/HandleImporter.cpp b/camera/common/1.0/default/HandleImporter.cpp
index 40cb4e0..05a552c 100644
--- a/camera/common/1.0/default/HandleImporter.cpp
+++ b/camera/common/1.0/default/HandleImporter.cpp
@@ -16,6 +16,8 @@
 
 #define LOG_TAG "HandleImporter"
 #include "HandleImporter.h"
+
+#include <gralloctypes/Gralloc4.h>
 #include <log/log.h>
 
 namespace android {
@@ -25,6 +27,9 @@
 namespace V1_0 {
 namespace helper {
 
+using aidl::android::hardware::graphics::common::PlaneLayout;
+using aidl::android::hardware::graphics::common::PlaneLayoutComponent;
+using aidl::android::hardware::graphics::common::PlaneLayoutComponentType;
 using MapperErrorV2 = android::hardware::graphics::mapper::V2_0::Error;
 using MapperErrorV3 = android::hardware::graphics::mapper::V3_0::Error;
 using MapperErrorV4 = android::hardware::graphics::mapper::V4_0::Error;
@@ -118,6 +123,79 @@
     return layout;
 }
 
+template <>
+YCbCrLayout HandleImporter::lockYCbCrInternal<IMapperV4, MapperErrorV4>(
+        const sp<IMapperV4> mapper, buffer_handle_t& buf, uint64_t cpuUsage,
+        const IMapper::Rect& accessRegion) {
+    hidl_handle acquireFenceHandle;
+    auto buffer = const_cast<native_handle_t*>(buf);
+    YCbCrLayout layout = {};
+    void* mapped = nullptr;
+
+    typename IMapperV4::Rect accessRegionV4 = {accessRegion.left, accessRegion.top,
+                                               accessRegion.width, accessRegion.height};
+    mapper->lock(buffer, cpuUsage, accessRegionV4, acquireFenceHandle,
+                 [&](const auto& tmpError, const auto& tmpPtr) {
+                     if (tmpError == MapperErrorV4::NONE) {
+                         mapped = tmpPtr;
+                     } else {
+                         ALOGE("%s: failed to lock error %d!", __FUNCTION__, tmpError);
+                     }
+                 });
+
+    if (mapped == nullptr) {
+        return layout;
+    }
+
+    hidl_vec<uint8_t> encodedPlaneLayouts;
+    mapper->get(buffer, gralloc4::MetadataType_PlaneLayouts,
+                [&](const auto& tmpError, const auto& tmpEncodedPlaneLayouts) {
+                    if (tmpError == MapperErrorV4::NONE) {
+                        encodedPlaneLayouts = tmpEncodedPlaneLayouts;
+                    } else {
+                        ALOGE("%s: failed to get plane layouts %d!", __FUNCTION__, tmpError);
+                    }
+                });
+
+    std::vector<PlaneLayout> planeLayouts;
+    gralloc4::decodePlaneLayouts(encodedPlaneLayouts, &planeLayouts);
+
+    for (const auto& planeLayout : planeLayouts) {
+        for (const auto& planeLayoutComponent : planeLayout.components) {
+            const auto& type = planeLayoutComponent.type;
+
+            if (!gralloc4::isStandardPlaneLayoutComponentType(type)) {
+                continue;
+            }
+
+            uint8_t* data = reinterpret_cast<uint8_t*>(mapped);
+            data += planeLayout.offsetInBytes;
+            data += planeLayoutComponent.offsetInBits / 8;
+
+            switch (static_cast<PlaneLayoutComponentType>(type.value)) {
+                case PlaneLayoutComponentType::Y:
+                    layout.y = data;
+                    layout.yStride = planeLayout.strideInBytes;
+                    break;
+                case PlaneLayoutComponentType::CB:
+                    layout.cb = data;
+                    layout.cStride = planeLayout.strideInBytes;
+                    layout.chromaStep = planeLayout.sampleIncrementInBits / 8;
+                    break;
+                case PlaneLayoutComponentType::CR:
+                    layout.cr = data;
+                    layout.cStride = planeLayout.strideInBytes;
+                    layout.chromaStep = planeLayout.sampleIncrementInBits / 8;
+                    break;
+                default:
+                    break;
+            }
+        }
+    }
+
+    return layout;
+}
+
 template<class M, class E>
 int HandleImporter::unlockInternal(const sp<M> mapper, buffer_handle_t& buf) {
     int releaseFence = -1;
@@ -306,13 +384,7 @@
     }
 
     if (mMapperV4 != nullptr) {
-        // No device currently supports IMapper 4.0 so it is safe to just return an error code here.
-        //
-        // This will be supported by a combination of lock and BufferMetadata getters. We are going
-        // to refactor all the IAllocator/IMapper versioning code into a shared library. We will
-        // then add the IMapper 4.0 lockYCbCr support then.
-        ALOGE("%s: MapperV4 doesn't support lockYCbCr directly!", __FUNCTION__);
-        return {};
+        return lockYCbCrInternal<IMapperV4, MapperErrorV4>(mMapperV4, buf, cpuUsage, accessRegion);
     }
 
     if (mMapperV3 != nullptr) {
diff --git a/camera/device/1.0/default/Android.bp b/camera/device/1.0/default/Android.bp
index e6e6485..da70577 100644
--- a/camera/device/1.0/default/Android.bp
+++ b/camera/device/1.0/default/Android.bp
@@ -20,15 +20,15 @@
         "android.hidl.memory@1.0",
         "libcutils",
         "liblog",
+        "libgralloctypes",
         "libhardware",
         "libcamera_metadata",
     ],
     static_libs: [
-        "android.hardware.camera.common@1.0-helper"
+        "android.hardware.camera.common@1.0-helper",
     ],
     header_libs: [
         "media_plugin_headers",
     ],
-    export_include_dirs: ["."]
+    export_include_dirs: ["."],
 }
-
diff --git a/camera/device/3.2/default/Android.bp b/camera/device/3.2/default/Android.bp
index 878878d..be2de07 100644
--- a/camera/device/3.2/default/Android.bp
+++ b/camera/device/3.2/default/Android.bp
@@ -2,9 +2,11 @@
     name: "camera.device@3.2-impl",
     defaults: ["hidl_defaults"],
     proprietary: true,
-    srcs: ["CameraDevice.cpp",
-           "CameraDeviceSession.cpp",
-           "convert.cpp"],
+    srcs: [
+        "CameraDevice.cpp",
+        "CameraDeviceSession.cpp",
+        "convert.cpp",
+    ],
     shared_libs: [
         "libhidlbase",
         "libutils",
@@ -15,15 +17,16 @@
         "android.hardware.graphics.mapper@3.0",
         "android.hardware.graphics.mapper@4.0",
         "liblog",
+        "libgralloctypes",
         "libhardware",
         "libcamera_metadata",
-        "libfmq"
+        "libfmq",
     ],
     static_libs: [
-        "android.hardware.camera.common@1.0-helper"
+        "android.hardware.camera.common@1.0-helper",
     ],
     export_include_dirs: ["."],
     export_shared_lib_headers: [
         "libfmq",
-    ]
+    ],
 }
diff --git a/camera/device/3.3/default/Android.bp b/camera/device/3.3/default/Android.bp
index 7d51434..0aa0dd7 100644
--- a/camera/device/3.3/default/Android.bp
+++ b/camera/device/3.3/default/Android.bp
@@ -2,9 +2,11 @@
     name: "camera.device@3.3-impl",
     defaults: ["hidl_defaults"],
     proprietary: true,
-    srcs: ["CameraDevice.cpp",
-           "CameraDeviceSession.cpp",
-           "convert.cpp"],
+    srcs: [
+        "CameraDevice.cpp",
+        "CameraDeviceSession.cpp",
+        "convert.cpp",
+    ],
     shared_libs: [
         "libhidlbase",
         "libutils",
@@ -17,15 +19,16 @@
         "android.hardware.graphics.mapper@3.0",
         "android.hardware.graphics.mapper@4.0",
         "liblog",
+        "libgralloctypes",
         "libhardware",
         "libcamera_metadata",
-        "libfmq"
+        "libfmq",
     ],
     static_libs: [
-        "android.hardware.camera.common@1.0-helper"
+        "android.hardware.camera.common@1.0-helper",
     ],
     export_include_dirs: ["."],
     export_shared_lib_headers: [
         "libfmq",
-    ]
+    ],
 }
diff --git a/camera/device/3.4/default/Android.bp b/camera/device/3.4/default/Android.bp
index 59e8329..982dce1 100644
--- a/camera/device/3.4/default/Android.bp
+++ b/camera/device/3.4/default/Android.bp
@@ -17,13 +17,13 @@
 cc_library_headers {
     name: "camera.device@3.4-impl_headers",
     vendor: true,
-    export_include_dirs: ["include/device_v3_4_impl"]
+    export_include_dirs: ["include/device_v3_4_impl"],
 }
 
 cc_library_headers {
     name: "camera.device@3.4-external-impl_headers",
     vendor: true,
-    export_include_dirs: ["include/ext_device_v3_4_impl"]
+    export_include_dirs: ["include/ext_device_v3_4_impl"],
 }
 
 cc_library_shared {
@@ -34,7 +34,7 @@
     srcs: [
         "CameraDevice.cpp",
         "CameraDeviceSession.cpp",
-        "convert.cpp"
+        "convert.cpp",
     ],
     shared_libs: [
         "libhidlbase",
@@ -50,6 +50,7 @@
         "android.hardware.graphics.mapper@3.0",
         "android.hardware.graphics.mapper@4.0",
         "liblog",
+        "libgralloctypes",
         "libhardware",
         "libcamera_metadata",
         "libfmq",
@@ -87,6 +88,7 @@
         "android.hardware.graphics.mapper@3.0",
         "android.hardware.graphics.mapper@4.0",
         "liblog",
+        "libgralloctypes",
         "libhardware",
         "libcamera_metadata",
         "libfmq",
@@ -94,7 +96,7 @@
         "libyuv",
         "libjpeg",
         "libexif",
-        "libtinyxml2"
+        "libtinyxml2",
     ],
     static_libs: [
         "android.hardware.camera.common@1.0-helper",
diff --git a/camera/device/3.5/default/Android.bp b/camera/device/3.5/default/Android.bp
index 1c307ee..d106b4b 100644
--- a/camera/device/3.5/default/Android.bp
+++ b/camera/device/3.5/default/Android.bp
@@ -17,13 +17,13 @@
 cc_library_headers {
     name: "camera.device@3.5-impl_headers",
     vendor: true,
-    export_include_dirs: ["include/device_v3_5_impl"]
+    export_include_dirs: ["include/device_v3_5_impl"],
 }
 
 cc_library_headers {
     name: "camera.device@3.5-external-impl_headers",
     vendor: true,
-    export_include_dirs: ["include/ext_device_v3_5_impl"]
+    export_include_dirs: ["include/ext_device_v3_5_impl"],
 }
 
 cc_library_shared {
@@ -51,6 +51,7 @@
         "android.hardware.graphics.mapper@3.0",
         "android.hardware.graphics.mapper@4.0",
         "liblog",
+        "libgralloctypes",
         "libhardware",
         "libcamera_metadata",
     ],
@@ -85,6 +86,7 @@
         "android.hardware.graphics.mapper@3.0",
         "android.hardware.graphics.mapper@4.0",
         "liblog",
+        "libgralloctypes",
         "libhardware",
         "libcamera_metadata",
         "libfmq",
@@ -92,7 +94,7 @@
         "libyuv",
         "libjpeg",
         "libexif",
-        "libtinyxml2"
+        "libtinyxml2",
     ],
     static_libs: [
         "android.hardware.camera.common@1.0-helper",
diff --git a/camera/device/3.6/default/Android.bp b/camera/device/3.6/default/Android.bp
index a2ddebd..2871e2a 100644
--- a/camera/device/3.6/default/Android.bp
+++ b/camera/device/3.6/default/Android.bp
@@ -17,7 +17,7 @@
 cc_library_headers {
     name: "camera.device@3.6-external-impl_headers",
     vendor: true,
-    export_include_dirs: ["include/ext_device_v3_6_impl"]
+    export_include_dirs: ["include/ext_device_v3_6_impl"],
 }
 
 cc_library_shared {
@@ -48,6 +48,7 @@
         "android.hardware.graphics.mapper@3.0",
         "android.hardware.graphics.mapper@4.0",
         "liblog",
+        "libgralloctypes",
         "libhardware",
         "libcamera_metadata",
         "libfmq",
@@ -55,7 +56,7 @@
         "libyuv",
         "libjpeg",
         "libexif",
-        "libtinyxml2"
+        "libtinyxml2",
     ],
     static_libs: [
         "android.hardware.camera.common@1.0-helper",
diff --git a/current.txt b/current.txt
index e29370d..4b5f168 100644
--- a/current.txt
+++ b/current.txt
@@ -605,6 +605,7 @@
 fb382e986c10b8fbb797a8546e8f9ea6d1107bfe6f3fb7e57f6bbbf1f807a906 android.hardware.neuralnetworks@1.2::IDevice
 40e71cd693de5b832325c5d8f081f2ff20a7ba2b89d401cee5b4b3eb0e241681 android.hardware.neuralnetworks@1.2::IPreparedModel
 ee1a0dee5be00a6fe2d4d3270068c78016dcb194d768fe07ed894ea20904037f android.hardware.neuralnetworks@1.2::types
+882b1c042ff842d7c52a794fab60bf6c599ef6b100ce99fa1772615096811d05 android.hardware.neuralnetworks@1.2::types # b/155508675
 a785a57447a81e9c130eef6904c3a5c256076c6a04588c40620ebd6fa2660d77 android.hardware.radio@1.2::types
 1a6e2bd289f22931c526b21916910f1d4c436b7acb9556e4243de4ce8e6cc2e4 android.hardware.soundtrigger@2.0::ISoundTriggerHwCallback
 fd65298e1e09e0e3c781ab18305920d757dbe55a3b459ce17814ec5cf6dfee99 android.hardware.wifi@1.0::IWifiP2pIface
@@ -718,6 +719,7 @@
 ee9dc34b9925b8367b1111c72bd6d9d375432735e451572ca5a665d8516a7744 android.hardware.neuralnetworks@1.3::IPreparedModel
 eee3430cc86c97c7b407495863d8fb61da6f1a64b7721e77b9b4909b11b174e9 android.hardware.neuralnetworks@1.3::IPreparedModelCallback
 acf84925f8ee0a651f2ec547ac334034de266479b93af5434f6c1f25e66aba96 android.hardware.neuralnetworks@1.3::types
+07801d19ca8a4f20543dae6b4d0c4d8b87e5161d3c431e973a1839cb7915a666 android.hardware.neuralnetworks@1.3::types # b/155508675
 b454df853441c12f6e425e8a60dd29fda20f5e6e39b93d1103e4b37495db38aa android.hardware.radio@1.5::IRadio
 fcbb0742a88215ee7a6d7ce0825d253eb2b50391fc6c8c48667f9fd7f6d4549e android.hardware.radio@1.5::IRadioIndication
 b809193970a91ca637a4b0184767315601d32e3ef3d5992ffbc7a8d14a14f015 android.hardware.radio@1.5::IRadioResponse
diff --git a/neuralnetworks/1.2/types.hal b/neuralnetworks/1.2/types.hal
index 2c3c599..9eff7ff 100644
--- a/neuralnetworks/1.2/types.hal
+++ b/neuralnetworks/1.2/types.hal
@@ -3872,6 +3872,8 @@
      *
      * Outputs:
      * * 0: A tensor of the same {@link OperandType} as input0.
+     *      If all dimensions are reduced and keep_dims is false, the output
+     *      shape is [1].
      */
     REDUCE_ALL = 75,
 
@@ -3897,6 +3899,8 @@
      *
      * Outputs:
      * * 0: A tensor of the same {@link OperandType} as input0.
+     *      If all dimensions are reduced and keep_dims is false, the output
+     *      shape is [1].
      */
     REDUCE_ANY = 76,
 
@@ -3924,6 +3928,8 @@
      *
      * Outputs:
      * * 0: A tensor of the same {@link OperandType} as input0.
+     *      If all dimensions are reduced and keep_dims is false, the output
+     *      shape is [1].
      *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
      *      the scale and zeroPoint must be the same as input0.
      */
@@ -3953,6 +3959,8 @@
      *
      * Outputs:
      * * 0: A tensor of the same {@link OperandType} as input0.
+     *      If all dimensions are reduced and keep_dims is false, the output
+     *      shape is [1].
      *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} tensor,
      *      the scale and zeroPoint must be the same as input0.
      */
@@ -3980,6 +3988,8 @@
      *
      * Outputs:
      * * 0: A tensor of the same {@link OperandType} as input0.
+     *      If all dimensions are reduced and keep_dims is false, the output
+     *      shape is [1].
      */
     REDUCE_PROD = 79,
 
@@ -4005,6 +4015,8 @@
      *
      * Outputs:
      * * 0: A tensor of the same {@link OperandType} as input0.
+     *      If all dimensions are reduced and keep_dims is false, the output
+     *      shape is [1].
      */
     REDUCE_SUM = 80,
 
diff --git a/neuralnetworks/1.3/types.hal b/neuralnetworks/1.3/types.hal
index 56930c2..83cf442 100644
--- a/neuralnetworks/1.3/types.hal
+++ b/neuralnetworks/1.3/types.hal
@@ -4096,6 +4096,8 @@
      *
      * Outputs:
      * * 0: A tensor of the same {@link OperandType} as input0.
+     *      If all dimensions are reduced and keep_dims is false, the output
+     *      shape is [1].
      */
     REDUCE_ALL = @1.2::OperationType:REDUCE_ALL,
 
@@ -4121,6 +4123,8 @@
      *
      * Outputs:
      * * 0: A tensor of the same {@link OperandType} as input0.
+     *      If all dimensions are reduced and keep_dims is false, the output
+     *      shape is [1].
      */
     REDUCE_ANY = @1.2::OperationType:REDUCE_ANY,
 
@@ -4149,6 +4153,8 @@
      *
      * Outputs:
      * * 0: A tensor of the same {@link OperandType} as input0.
+     *      If all dimensions are reduced and keep_dims is false, the output
+     *      shape is [1].
      *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} and
      *      {@link OperandType::TENSOR_QUANT8_ASYMM_SIGNED} tensor,
      *      the scale and zeroPoint must be the same as input0.
@@ -4180,6 +4186,8 @@
      *
      * Outputs:
      * * 0: A tensor of the same {@link OperandType} as input0.
+     *      If all dimensions are reduced and keep_dims is false, the output
+     *      shape is [1].
      *      For a {@link OperandType::TENSOR_QUANT8_ASYMM} and
      *      {@link OperandType::TENSOR_QUANT8_ASYMM_SIGNED} tensor,
      *      the scale and zeroPoint must be the same as input0.
@@ -4208,6 +4216,8 @@
      *
      * Outputs:
      * * 0: A tensor of the same {@link OperandType} as input0.
+     *      If all dimensions are reduced and keep_dims is false, the output
+     *      shape is [1].
      */
     REDUCE_PROD = @1.2::OperationType:REDUCE_PROD,
 
@@ -4233,6 +4243,8 @@
      *
      * Outputs:
      * * 0: A tensor of the same {@link OperandType} as input0.
+     *      If all dimensions are reduced and keep_dims is false, the output
+     *      shape is [1].
      */
     REDUCE_SUM = @1.2::OperationType:REDUCE_SUM,