diff --git a/media/bufferpool/2.0/Android.bp b/media/bufferpool/2.0/Android.bp
index 0d1fe27..930b026 100644
--- a/media/bufferpool/2.0/Android.bp
+++ b/media/bufferpool/2.0/Android.bp
@@ -40,6 +40,12 @@
     defaults: ["libstagefright_bufferpool@2.0-default"],
     vendor_available: true,
     min_sdk_version: "29",
+    apex_available: [
+        "//apex_available:platform",
+        "com.android.media.swcodec",
+        "test_com.android.media.swcodec",
+    ],
+
     // TODO: b/147147992
     double_loadable: true,
     cflags: [
diff --git a/media/codec2/components/tests/Android.bp b/media/codec2/components/tests/Android.bp
index 3c68eee..be2abf2 100644
--- a/media/codec2/components/tests/Android.bp
+++ b/media/codec2/components/tests/Android.bp
@@ -9,44 +9,13 @@
 
 cc_defaults {
     name: "C2SoftCodecTest-defaults",
+    defaults: [ "libcodec2-static-defaults" ],
     gtest: true,
     host_supported: false,
     srcs: [
         "C2SoftCodecTest.cpp",
     ],
 
-    static_libs: [
-        "liblog",
-        "libion",
-        "libfmq",
-        "libbase",
-        "libutils",
-        "libcutils",
-        "libcodec2",
-        "libhidlbase",
-        "libdmabufheap",
-        "libcodec2_vndk",
-        "libnativewindow",
-        "libcodec2_soft_common",
-        "libsfplugin_ccodec_utils",
-        "libstagefright_foundation",
-        "libstagefright_bufferpool@2.0.1",
-        "android.hardware.graphics.mapper@2.0",
-        "android.hardware.graphics.mapper@3.0",
-        "android.hardware.media.bufferpool@2.0",
-        "android.hardware.graphics.allocator@2.0",
-        "android.hardware.graphics.allocator@3.0",
-        "android.hardware.graphics.bufferqueue@2.0",
-    ],
-
-    shared_libs: [
-        "libui",
-        "libdl",
-        "libhardware",
-        "libvndksupport",
-        "libprocessgroup",
-    ],
-
     cflags: [
         "-Wall",
         "-Werror",
diff --git a/media/codec2/fuzzer/Android.bp b/media/codec2/fuzzer/Android.bp
index bd1fac6..3adc212 100644
--- a/media/codec2/fuzzer/Android.bp
+++ b/media/codec2/fuzzer/Android.bp
@@ -28,43 +28,12 @@
 cc_defaults {
     name: "C2Fuzzer-defaults",
 
+    defaults: [ "libcodec2-static-defaults" ],
+
     srcs: [
         "C2Fuzzer.cpp",
     ],
 
-    static_libs: [
-        "liblog",
-        "libion",
-        "libfmq",
-        "libbase",
-        "libutils",
-        "libcutils",
-        "libcodec2",
-        "libhidlbase",
-        "libdmabufheap",
-        "libcodec2_vndk",
-        "libnativewindow",
-        "libcodec2_soft_common",
-        "libsfplugin_ccodec_utils",
-        "libstagefright_foundation",
-        "libstagefright_bufferpool@2.0.1",
-        "android.hardware.graphics.mapper@2.0",
-        "android.hardware.graphics.mapper@3.0",
-        "android.hardware.media.bufferpool@2.0",
-        "android.hardware.graphics.allocator@2.0",
-        "android.hardware.graphics.allocator@3.0",
-        "android.hardware.graphics.bufferqueue@2.0",
-    ],
-
-    shared_libs: [
-        "libui",
-        "libdl",
-        "libbinder",
-        "libhardware",
-        "libvndksupport",
-        "libprocessgroup",
-    ],
-
     cflags: [
         "-Wall",
         "-Werror",
diff --git a/media/codec2/vndk/Android.bp b/media/codec2/vndk/Android.bp
index be81c84..27cd1f8 100644
--- a/media/codec2/vndk/Android.bp
+++ b/media/codec2/vndk/Android.bp
@@ -73,11 +73,12 @@
         "libbase",
         "libcutils",
         "libdl",
+        "libdmabufheap",
+        "libfmq",
+        "libgralloctypes",
         "libhardware",
         "libhidlbase",
         "libion",
-        "libdmabufheap",
-        "libfmq",
         "liblog",
         "libnativewindow",
         "libstagefright_foundation",
@@ -92,6 +93,44 @@
     ],
 }
 
+// public dependency for statically linking to libcodec2_vndk for unit tests
+cc_defaults {
+    name: "libcodec2-static-defaults",
+
+    static_libs: [
+        "liblog",
+        "libion",
+        "libfmq",
+        "libbase",
+        "libutils",
+        "libcutils",
+        "libcodec2",
+        "libhidlbase",
+        "libdmabufheap",
+        "libcodec2_vndk",
+        "libnativewindow",
+        "libcodec2_soft_common",
+        "libsfplugin_ccodec_utils",
+        "libstagefright_foundation",
+        "libstagefright_bufferpool@2.0.1",
+        "libgralloctypes",
+        "android.hardware.graphics.mapper@2.0",
+        "android.hardware.graphics.mapper@3.0",
+        "android.hardware.media.bufferpool@2.0",
+        "android.hardware.graphics.allocator@2.0",
+        "android.hardware.graphics.allocator@3.0",
+        "android.hardware.graphics.bufferqueue@2.0",
+    ],
+
+    shared_libs: [
+        "libui",
+        "libdl",
+        "libhardware",
+        "libvndksupport",
+        "libprocessgroup",
+    ],
+}
+
 // public dependency for implementing Codec 2 components
 cc_defaults {
     name: "libcodec2-impl-defaults",
diff --git a/media/codec2/vndk/C2AllocatorGralloc.cpp b/media/codec2/vndk/C2AllocatorGralloc.cpp
index 6a7f19c..b5200a5 100644
--- a/media/codec2/vndk/C2AllocatorGralloc.cpp
+++ b/media/codec2/vndk/C2AllocatorGralloc.cpp
@@ -20,8 +20,10 @@
 
 #include <mutex>
 
+#include <aidl/android/hardware/graphics/common/PlaneLayoutComponentType.h>
 #include <android/hardware/graphics/common/1.2/types.h>
 #include <cutils/native_handle.h>
+#include <gralloctypes/Gralloc4.h>
 #include <hardware/gralloc.h>
 #include <ui/GraphicBufferAllocator.h>
 #include <ui/GraphicBufferMapper.h>
@@ -29,6 +31,7 @@
 
 #include <C2AllocatorGralloc.h>
 #include <C2Buffer.h>
+#include <C2Debug.h>
 #include <C2PlatformSupport.h>
 
 using ::android::hardware::hidl_handle;
@@ -230,8 +233,89 @@
     }
 };
 
+static
+c2_status_t Gralloc4Mapper_lock(native_handle_t *handle, uint64_t usage, const Rect& bounds,
+        C2PlanarLayout *layout, uint8_t **addr) {
+    GraphicBufferMapper &mapper = GraphicBufferMapper::get();
+
+    std::vector<ui::PlaneLayout> planes;
+    // this method is only supported on Gralloc 4 or later
+    status_t err = mapper.getPlaneLayouts(handle, &planes);
+    if (err != NO_ERROR || planes.empty()) {
+        return C2_CANNOT_DO;
+    }
+
+    uint8_t *pointer = nullptr;
+    err = mapper.lock(handle, usage, bounds, (void **)&pointer, nullptr, nullptr);
+    if (err != NO_ERROR || pointer == nullptr) {
+        return C2_CORRUPTED;
+    }
+
+    using aidl::android::hardware::graphics::common::PlaneLayoutComponentType;
+    using aidl::android::hardware::graphics::common::PlaneLayoutComponent;
+
+    layout->type = C2PlanarLayout::TYPE_YUV;
+    layout->numPlanes = 0;
+    layout->rootPlanes = 0;
+
+    for (const ui::PlaneLayout &plane : planes) {
+        layout->rootPlanes++;
+        uint32_t lastOffsetInBits = 0;
+        uint32_t rootIx = 0;
+
+        for (const PlaneLayoutComponent &component : plane.components) {
+            if (!gralloc4::isStandardPlaneLayoutComponentType(component.type)) {
+                return C2_CANNOT_DO;
+            }
+
+            uint32_t rightShiftBits = component.offsetInBits - lastOffsetInBits;
+            uint32_t allocatedDepthInBits = component.sizeInBits + rightShiftBits;
+            C2PlanarLayout::plane_index_t planeId;
+            C2PlaneInfo::channel_t channel;
+
+            switch (static_cast<PlaneLayoutComponentType>(component.type.value)) {
+                case PlaneLayoutComponentType::Y:
+                    planeId = C2PlanarLayout::PLANE_Y;
+                    channel = C2PlaneInfo::CHANNEL_Y;
+                    break;
+                case PlaneLayoutComponentType::CB:
+                    planeId = C2PlanarLayout::PLANE_U;
+                    channel = C2PlaneInfo::CHANNEL_CB;
+                    break;
+                case PlaneLayoutComponentType::CR:
+                    planeId = C2PlanarLayout::PLANE_V;
+                    channel = C2PlaneInfo::CHANNEL_CR;
+                    break;
+                default:
+                    return C2_CORRUPTED;
+            }
+
+            addr[planeId] = pointer + plane.offsetInBytes + (component.offsetInBits / 8);
+            layout->planes[planeId] = {
+                channel,                                                // channel
+                static_cast<int32_t>(plane.sampleIncrementInBits / 8),  // colInc
+                static_cast<int32_t>(plane.strideInBytes),              // rowInc
+                static_cast<uint32_t>(plane.horizontalSubsampling),     // mColSampling
+                static_cast<uint32_t>(plane.verticalSubsampling),       // mRowSampling
+                allocatedDepthInBits,                                   // allocatedDepth (bits)
+                static_cast<uint32_t>(component.sizeInBits),            // bitDepth (bits)
+                rightShiftBits,                                         // rightShift (bits)
+                C2PlaneInfo::NATIVE,                                    // endianness
+                rootIx,                                                 // rootIx
+                static_cast<uint32_t>(component.offsetInBits / 8),      // offset (bytes)
+            };
+
+            layout->numPlanes++;
+            lastOffsetInBits = component.offsetInBits + component.sizeInBits;
+            rootIx++;
+        }
+    }
+    return C2_OK;
+}
+
 } // unnamed namespace
 
+
 native_handle_t *UnwrapNativeCodec2GrallocHandle(const C2Handle *const handle) {
     return C2HandleGralloc::UnwrapNativeHandle(handle);
 }
@@ -385,6 +469,10 @@
                 mBuffer, mWidth, mHeight, mFormat, mGrallocUsage,
                 mStride, generation, igbp_id, igbp_slot);
     }
+
+    // 'NATIVE' on Android means LITTLE_ENDIAN
+    constexpr C2PlaneInfo::endianness_t kEndianness = C2PlaneInfo::NATIVE;
+
     switch (mFormat) {
         case static_cast<uint32_t>(PixelFormat4::RGBA_1010102): {
             // TRICKY: this is used for media as YUV444 in the case when it is queued directly to a
@@ -646,7 +734,7 @@
                 16,                             // allocatedDepth
                 10,                             // bitDepth
                 6,                              // rightShift
-                C2PlaneInfo::LITTLE_END,        // endianness
+                kEndianness,                    // endianness
                 C2PlanarLayout::PLANE_Y,        // rootIx
                 0,                              // offset
             };
@@ -659,7 +747,7 @@
                 16,                             // allocatedDepth
                 10,                             // bitDepth
                 6,                              // rightShift
-                C2PlaneInfo::LITTLE_END,        // endianness
+                kEndianness,                    // endianness
                 C2PlanarLayout::PLANE_U,        // rootIx
                 0,                              // offset
             };
@@ -672,7 +760,7 @@
                 16,                             // allocatedDepth
                 10,                             // bitDepth
                 6,                              // rightShift
-                C2PlaneInfo::LITTLE_END,        // endianness
+                kEndianness,                    // endianness
                 C2PlanarLayout::PLANE_U,        // rootIx
                 2,                              // offset
             };
@@ -680,9 +768,15 @@
         }
 
         default: {
-            // We don't know what it is, but let's try to lock it.
+            // We don't know what it is, let's try to lock it with gralloc4
             android_ycbcr ycbcrLayout;
+            c2_status_t status = Gralloc4Mapper_lock(
+                    const_cast<native_handle_t*>(mBuffer), grallocUsage, rect, layout, addr);
+            if (status == C2_OK) {
+                break;
+            }
 
+            // fallback to lockYCbCr
             status_t err = GraphicBufferMapper::get().lockYCbCr(
                     const_cast<native_handle_t*>(mBuffer), grallocUsage, rect, &ycbcrLayout);
             if (err == OK && ycbcrLayout.y && ycbcrLayout.cb && ycbcrLayout.cr
diff --git a/media/codecs/mp3dec/Android.bp b/media/codecs/mp3dec/Android.bp
index 1ab0511..6659ea5 100644
--- a/media/codecs/mp3dec/Android.bp
+++ b/media/codecs/mp3dec/Android.bp
@@ -47,6 +47,10 @@
     name: "libstagefright_mp3dec",
     vendor_available: true,
     min_sdk_version: "29",
+    apex_available: [
+        "//apex_available:platform",
+        "com.android.media.swcodec",
+    ],
 
     host_supported:true,
     srcs: [
diff --git a/media/extractors/Android.bp b/media/extractors/Android.bp
index 66585da..f654ecd 100644
--- a/media/extractors/Android.bp
+++ b/media/extractors/Android.bp
@@ -28,13 +28,15 @@
         "liblog",
     ],
 
-    // extractors are supposed to work on Q(29)
+    // extractors are expected to run on Q(29)
     min_sdk_version: "29",
+    apex_available: [
+        "//apex_available:platform",
+        "com.android.media",
+    ],
 
     relative_install_path: "extractors",
 
-    compile_multilib: "first",
-
     cflags: [
         "-Werror",
         "-Wall",
diff --git a/media/libaudioclient/Android.bp b/media/libaudioclient/Android.bp
index be39527..33e2848 100644
--- a/media/libaudioclient/Android.bp
+++ b/media/libaudioclient/Android.bp
@@ -11,6 +11,10 @@
     name: "libaudioclient_headers",
     vendor_available: true,
     min_sdk_version: "29",
+    apex_available: [
+        "//apex_available:platform",
+        "com.android.media",
+    ],
     host_supported: true,
 
     header_libs: [
diff --git a/media/libaudioclient/fuzzer/audioflinger_fuzzer.cpp b/media/libaudioclient/fuzzer/audioflinger_fuzzer.cpp
index 4c89249..7667501 100644
--- a/media/libaudioclient/fuzzer/audioflinger_fuzzer.cpp
+++ b/media/libaudioclient/fuzzer/audioflinger_fuzzer.cpp
@@ -315,7 +315,7 @@
     attributionSource.packageName = std::string(mFdp.ConsumeRandomLengthString().c_str());
     attributionSource.token = sp<BBinder>::make();
     sp<AudioRecord> record = new AudioRecord(attributionSource);
-    record->set(AUDIO_SOURCE_DEFAULT, sampleRate, format, channelMask, frameCount, nullptr, nullptr,
+    record->set(AUDIO_SOURCE_DEFAULT, sampleRate, format, channelMask, frameCount, nullptr,
                 notificationFrames, false, sessionId,
                 fast ? AudioRecord::TRANSFER_CALLBACK : AudioRecord::TRANSFER_DEFAULT, flags,
                 getuid(), getpid(), &attributes, AUDIO_PORT_HANDLE_NONE);
diff --git a/media/libaudioclient/tests/test_create_audiorecord.cpp b/media/libaudioclient/tests/test_create_audiorecord.cpp
index 1cbcb71..2e0883b 100644
--- a/media/libaudioclient/tests/test_create_audiorecord.cpp
+++ b/media/libaudioclient/tests/test_create_audiorecord.cpp
@@ -98,14 +98,14 @@
         attributes.source = inputSource;
 
         sp<AudioRecord> record = new AudioRecord(attributionSource);
+        const auto emptyCallback = sp<AudioRecord::IAudioRecordCallback>::make();
 
         record->set(AUDIO_SOURCE_DEFAULT,
                    sampleRate,
                    format,
                    channelMask,
                    frameCount,
-                   fast ? callback : nullptr,
-                   nullptr,
+                   fast ? emptyCallback : nullptr,
                    notificationFrames,
                    false,
                    sessionId,
diff --git a/media/libaudioclient/tests/test_create_audiotrack.cpp b/media/libaudioclient/tests/test_create_audiotrack.cpp
index cf9b925..e7231d3 100644
--- a/media/libaudioclient/tests/test_create_audiotrack.cpp
+++ b/media/libaudioclient/tests/test_create_audiotrack.cpp
@@ -19,6 +19,7 @@
 #include <string.h>
 #include <unistd.h>
 
+#include <android/content/AttributionSourceState.h>
 #include <binder/MemoryBase.h>
 #include <binder/MemoryDealer.h>
 #include <binder/MemoryHeapBase.h>
@@ -108,17 +109,15 @@
         memset(&attributes, 0, sizeof(attributes));
         attributes.content_type = contentType;
         attributes.usage = usage;
-
         sp<AudioTrack> track = new AudioTrack();
-
+        const auto emptyCallback = sp<AudioTrack::IAudioTrackCallback>::make();
         track->set(AUDIO_STREAM_DEFAULT,
                    sampleRate,
                    format,
                    channelMask,
                    frameCount,
                    flags,
-                   (fast || offload) ? callback : nullptr,
-                   nullptr,
+                   (fast || offload) ? emptyCallback : nullptr,
                    notificationFrames,
                    sharedBuffer,
                    false,
@@ -126,8 +125,7 @@
                    ((fast && sharedBuffer == 0) || offload) ?
                            AudioTrack::TRANSFER_CALLBACK : AudioTrack::TRANSFER_DEFAULT,
                    offload ? &offloadInfo : nullptr,
-                   getuid(),
-                   getpid(),
+                   AttributionSourceState(),
                    &attributes,
                    false,
                    1.0f,
diff --git a/media/libaudioclient/tests/test_create_utils.cpp b/media/libaudioclient/tests/test_create_utils.cpp
index 8aa1f13..caf5227 100644
--- a/media/libaudioclient/tests/test_create_utils.cpp
+++ b/media/libaudioclient/tests/test_create_utils.cpp
@@ -68,10 +68,6 @@
     return true;
 }
 
-void callback(int event __unused, void* user __unused, void *info __unused)
-{
-}
-
 int main(int argc, char **argv, test_func_t testFunc)
 {
     FILE *inputFile = nullptr;
diff --git a/media/libaudioclient/tests/test_create_utils.h b/media/libaudioclient/tests/test_create_utils.h
index 2ad646e..9a6f9fa 100644
--- a/media/libaudioclient/tests/test_create_utils.h
+++ b/media/libaudioclient/tests/test_create_utils.h
@@ -31,7 +31,6 @@
 
 bool checkVersion(FILE *inputFile, const char *version);
 
-void callback(int event, void* user, void *info);
 
 typedef int (*test_func_t)(FILE *inputFile, int outputFileFd);
 
diff --git a/media/libaudiofoundation/Android.bp b/media/libaudiofoundation/Android.bp
index 727b86f..159f898 100644
--- a/media/libaudiofoundation/Android.bp
+++ b/media/libaudiofoundation/Android.bp
@@ -11,6 +11,10 @@
     name: "libaudiofoundation_headers",
     vendor_available: true,
     min_sdk_version: "29",
+    apex_available: [
+        "//apex_available:platform",
+        "com.android.media",
+    ],
 
     export_include_dirs: ["include"],
     header_libs: [
diff --git a/media/libaudiohal/Android.bp b/media/libaudiohal/Android.bp
index 5fe74f9..5f63e8d 100644
--- a/media/libaudiohal/Android.bp
+++ b/media/libaudiohal/Android.bp
@@ -27,6 +27,7 @@
         "libaudiohal@5.0",
         "libaudiohal@6.0",
         "libaudiohal@7.0",
+        "libaudiohal@7.1",
     ],
 
     shared_libs: [
diff --git a/media/libaudiohal/FactoryHalHidl.cpp b/media/libaudiohal/FactoryHalHidl.cpp
index c19d2c2..804edcc 100644
--- a/media/libaudiohal/FactoryHalHidl.cpp
+++ b/media/libaudiohal/FactoryHalHidl.cpp
@@ -31,6 +31,7 @@
 /** Supported HAL versions, in order of preference.
  */
 const char* sAudioHALVersions[] = {
+    "7.1",
     "7.0",
     "6.0",
     "5.0",
diff --git a/media/libaudiohal/impl/Android.bp b/media/libaudiohal/impl/Android.bp
index d6576f5..ed7e50b 100644
--- a/media/libaudiohal/impl/Android.bp
+++ b/media/libaudiohal/impl/Android.bp
@@ -7,22 +7,33 @@
     default_applicable_licenses: ["frameworks_av_license"],
 }
 
-cc_defaults {
-    name: "libaudiohal_default",
-
+filegroup {
+    name: "audio_core_hal_client_sources",
     srcs: [
         "DeviceHalLocal.cpp",
         "DevicesFactoryHalHybrid.cpp",
         "DevicesFactoryHalLocal.cpp",
-        "StreamHalLocal.cpp",
-
-        "ConversionHelperHidl.cpp",
         "DeviceHalHidl.cpp",
         "DevicesFactoryHalHidl.cpp",
+        "StreamHalLocal.cpp",
+        "StreamHalHidl.cpp",
+    ],
+}
+
+filegroup {
+    name: "audio_effect_hal_client_sources",
+    srcs: [
         "EffectBufferHalHidl.cpp",
         "EffectHalHidl.cpp",
         "EffectsFactoryHalHidl.cpp",
-        "StreamHalHidl.cpp",
+    ],
+}
+
+cc_defaults {
+    name: "libaudiohal_default",
+
+    srcs: [
+        "ConversionHelperHidl.cpp",
     ],
 
     cflags: [
@@ -66,6 +77,10 @@
 cc_library_shared {
     name: "libaudiohal@4.0",
     defaults: ["libaudiohal_default"],
+    srcs: [
+        ":audio_core_hal_client_sources",
+        ":audio_effect_hal_client_sources",
+    ],
     shared_libs: [
         "android.hardware.audio.common@4.0",
         "android.hardware.audio.common@4.0-util",
@@ -84,6 +99,10 @@
 cc_library_shared {
     name: "libaudiohal@5.0",
     defaults: ["libaudiohal_default"],
+    srcs: [
+        ":audio_core_hal_client_sources",
+        ":audio_effect_hal_client_sources",
+    ],
     shared_libs: [
         "android.hardware.audio.common@5.0",
         "android.hardware.audio.common@5.0-util",
@@ -102,6 +121,10 @@
 cc_library_shared {
     name: "libaudiohal@6.0",
     defaults: ["libaudiohal_default"],
+    srcs: [
+        ":audio_core_hal_client_sources",
+        ":audio_effect_hal_client_sources",
+    ],
     shared_libs: [
         "android.hardware.audio.common@6.0",
         "android.hardware.audio.common@6.0-util",
@@ -120,6 +143,10 @@
 cc_library_shared {
     name: "libaudiohal@7.0",
     defaults: ["libaudiohal_default"],
+    srcs: [
+        ":audio_core_hal_client_sources",
+        ":audio_effect_hal_client_sources",
+    ],
     shared_libs: [
         "android.hardware.audio.common@7.0",
         "android.hardware.audio.common@7.0-util",
@@ -134,3 +161,25 @@
         "-include common/all-versions/VersionMacro.h",
     ]
 }
+
+cc_library_shared {
+    name: "libaudiohal@7.1",
+    defaults: ["libaudiohal_default"],
+    srcs: [
+        ":audio_core_hal_client_sources",
+    ],
+    shared_libs: [
+        "android.hardware.audio.common@7.0",
+        "android.hardware.audio.common@7.0-util",
+        "android.hardware.audio@7.0",
+        "android.hardware.audio@7.1",
+        "android.hardware.audio@7.0-util",
+    ],
+    cflags: [
+        "-DMAJOR_VERSION=7",
+        "-DMINOR_VERSION=1",
+        "-DCOMMON_TYPES_MINOR_VERSION=0",
+        "-DCORE_TYPES_MINOR_VERSION=0",
+        "-include common/all-versions/VersionMacro.h",
+    ]
+}
diff --git a/media/libaudiohal/impl/ConversionHelperHidl.cpp b/media/libaudiohal/impl/ConversionHelperHidl.cpp
index 0503698..1d34814 100644
--- a/media/libaudiohal/impl/ConversionHelperHidl.cpp
+++ b/media/libaudiohal/impl/ConversionHelperHidl.cpp
@@ -24,10 +24,9 @@
 #include "ConversionHelperHidl.h"
 
 namespace android {
-namespace CPP_VERSION {
 
-using namespace ::android::hardware::audio::common::CPP_VERSION;
-using namespace ::android::hardware::audio::CPP_VERSION;
+using namespace ::android::hardware::audio::common::COMMON_TYPES_CPP_VERSION;
+using namespace ::android::hardware::audio::CORE_TYPES_CPP_VERSION;
 
 // static
 status_t ConversionHelperHidl::keysFromHal(const String8& keys, hidl_vec<hidl_string> *hidlKeys) {
@@ -129,5 +128,4 @@
     ALOGE("%s %p %s: %s (from rpc)", mClassName, this, funcName, description);
 }
 
-}  // namespace CPP_VERSION
 }  // namespace android
diff --git a/media/libaudiohal/impl/ConversionHelperHidl.h b/media/libaudiohal/impl/ConversionHelperHidl.h
index 2909013..9368551 100644
--- a/media/libaudiohal/impl/ConversionHelperHidl.h
+++ b/media/libaudiohal/impl/ConversionHelperHidl.h
@@ -17,22 +17,21 @@
 #ifndef ANDROID_HARDWARE_CONVERSION_HELPER_HIDL_H
 #define ANDROID_HARDWARE_CONVERSION_HELPER_HIDL_H
 
-#include PATH(android/hardware/audio/FILE_VERSION/types.h)
+#include PATH(android/hardware/audio/CORE_TYPES_FILE_VERSION/types.h)
 #include <hidl/HidlSupport.h>
 #include <system/audio.h>
 #include <utils/String8.h>
 #include <utils/String16.h>
 #include <utils/Vector.h>
 
-using ::android::hardware::audio::CPP_VERSION::ParameterValue;
-using CoreResult = ::android::hardware::audio::CPP_VERSION::Result;
+using ::android::hardware::audio::CORE_TYPES_CPP_VERSION::ParameterValue;
+using CoreResult = ::android::hardware::audio::CORE_TYPES_CPP_VERSION::Result;
 
 using ::android::hardware::Return;
 using ::android::hardware::hidl_string;
 using ::android::hardware::hidl_vec;
 
 namespace android {
-namespace CPP_VERSION {
 
 class ConversionHelperHidl {
   protected:
@@ -85,7 +84,6 @@
     void emitError(const char* funcName, const char* description);
 };
 
-}  // namespace CPP_VERSION
 }  // namespace android
 
 #endif // ANDROID_HARDWARE_CONVERSION_HELPER_HIDL_H
diff --git a/media/libaudiohal/impl/DeviceHalHidl.cpp b/media/libaudiohal/impl/DeviceHalHidl.cpp
index 209094c..8b09d76 100644
--- a/media/libaudiohal/impl/DeviceHalHidl.cpp
+++ b/media/libaudiohal/impl/DeviceHalHidl.cpp
@@ -31,27 +31,40 @@
 #include <util/CoreUtils.h>
 
 #include "DeviceHalHidl.h"
-#include "EffectHalHidl.h"
 #include "ParameterUtils.h"
 #include "StreamHalHidl.h"
 
-using ::android::hardware::audio::common::CPP_VERSION::implementation::HidlUtils;
+using ::android::hardware::audio::common::COMMON_TYPES_CPP_VERSION::implementation::HidlUtils;
 using ::android::hardware::audio::common::utils::EnumBitfield;
-using ::android::hardware::audio::CPP_VERSION::implementation::CoreUtils;
+using ::android::hardware::audio::CORE_TYPES_CPP_VERSION::implementation::CoreUtils;
 using ::android::hardware::hidl_string;
 using ::android::hardware::hidl_vec;
 
 namespace android {
-namespace CPP_VERSION {
 
-using namespace ::android::hardware::audio::common::CPP_VERSION;
-using namespace ::android::hardware::audio::CPP_VERSION;
+using namespace ::android::hardware::audio::common::COMMON_TYPES_CPP_VERSION;
+using namespace ::android::hardware::audio::CORE_TYPES_CPP_VERSION;
 
-using EffectHalHidl = ::android::effect::CPP_VERSION::EffectHalHidl;
+DeviceHalHidl::DeviceHalHidl(const sp<::android::hardware::audio::CPP_VERSION::IDevice>& device)
+        : ConversionHelperHidl("Device"), mDevice(device) {
+}
 
-DeviceHalHidl::DeviceHalHidl(const sp<IDevice>& device)
-        : ConversionHelperHidl("Device"), mDevice(device),
-          mPrimaryDevice(IPrimaryDevice::castFrom(device)) {
+DeviceHalHidl::DeviceHalHidl(
+        const sp<::android::hardware::audio::CPP_VERSION::IPrimaryDevice>& device)
+        : ConversionHelperHidl("Device"),
+#if MAJOR_VERSION <= 6 || (MAJOR_VERSION == 7 && MINOR_VERSION == 0)
+          mDevice(device),
+#endif
+          mPrimaryDevice(device) {
+#if MAJOR_VERSION == 7 && MINOR_VERSION == 1
+    auto getDeviceRet = mPrimaryDevice->getDevice();
+    if (getDeviceRet.isOk()) {
+        mDevice = getDeviceRet;
+    } else {
+        ALOGE("Call to IPrimaryDevice.getDevice has failed: %s",
+                getDeviceRet.description().c_str());
+    }
+#endif
 }
 
 DeviceHalHidl::~DeviceHalHidl() {
@@ -220,12 +233,17 @@
         return status;
     }
     Result retval = Result::NOT_INITIALIZED;
+#if MAJOR_VERSION == 7 && MINOR_VERSION == 1
+    Return<void> ret = mDevice->openOutputStream_7_1(
+#else
     Return<void> ret = mDevice->openOutputStream(
+#endif
             handle, hidlDevice, hidlConfig, hidlFlags,
 #if MAJOR_VERSION >= 4
             {} /* metadata */,
 #endif
-            [&](Result r, const sp<IStreamOut>& result, const AudioConfig& suggestedConfig) {
+            [&](Result r, const sp<::android::hardware::audio::CPP_VERSION::IStreamOut>& result,
+                    const AudioConfig& suggestedConfig) {
                 retval = r;
                 if (retval == Result::OK) {
                     *outStream = new StreamOutHalHidl(result);
@@ -293,9 +311,14 @@
         sinkMetadata.tracks[0].destination.device(std::move(hidlOutputDevice));
     }
 #endif
+#if MAJOR_VERSION == 7 && MINOR_VERSION == 1
+    Return<void> ret = mDevice->openInputStream_7_1(
+#else
     Return<void> ret = mDevice->openInputStream(
+#endif
             handle, hidlDevice, hidlConfig, hidlFlags, sinkMetadata,
-            [&](Result r, const sp<IStreamIn>& result, const AudioConfig& suggestedConfig) {
+            [&](Result r, const sp<::android::hardware::audio::CPP_VERSION::IStreamIn>& result,
+                    const AudioConfig& suggestedConfig) {
                 retval = r;
                 if (retval == Result::OK) {
                     *inStream = new StreamInHalHidl(result);
@@ -443,8 +466,7 @@
         audio_port_handle_t device, sp<EffectHalInterface> effect) {
     if (mDevice == 0) return NO_INIT;
     return processReturn("addDeviceEffect", mDevice->addDeviceEffect(
-            static_cast<AudioPortHandle>(device),
-            static_cast<EffectHalHidl*>(effect.get())->effectId()));
+            static_cast<AudioPortHandle>(device), effect->effectId()));
 }
 #else
 status_t DeviceHalHidl::addDeviceEffect(
@@ -458,8 +480,7 @@
         audio_port_handle_t device, sp<EffectHalInterface> effect) {
     if (mDevice == 0) return NO_INIT;
     return processReturn("removeDeviceEffect", mDevice->removeDeviceEffect(
-            static_cast<AudioPortHandle>(device),
-            static_cast<EffectHalHidl*>(effect.get())->effectId()));
+            static_cast<AudioPortHandle>(device), effect->effectId()));
 }
 #else
 status_t DeviceHalHidl::removeDeviceEffect(
@@ -491,5 +512,4 @@
     return processReturn("dump", ret);
 }
 
-} // namespace CPP_VERSION
 } // namespace android
diff --git a/media/libaudiohal/impl/DeviceHalHidl.h b/media/libaudiohal/impl/DeviceHalHidl.h
index 9fd0ac0..104db40 100644
--- a/media/libaudiohal/impl/DeviceHalHidl.h
+++ b/media/libaudiohal/impl/DeviceHalHidl.h
@@ -20,15 +20,11 @@
 #include PATH(android/hardware/audio/FILE_VERSION/IDevice.h)
 #include PATH(android/hardware/audio/FILE_VERSION/IPrimaryDevice.h)
 #include <media/audiohal/DeviceHalInterface.h>
+#include <media/audiohal/EffectHalInterface.h>
 
 #include "ConversionHelperHidl.h"
 
-using ::android::hardware::audio::CPP_VERSION::IDevice;
-using ::android::hardware::audio::CPP_VERSION::IPrimaryDevice;
-using ::android::hardware::Return;
-
 namespace android {
-namespace CPP_VERSION {
 
 class DeviceHalHidl : public DeviceHalInterface, public ConversionHelperHidl
 {
@@ -140,11 +136,14 @@
 
   private:
     friend class DevicesFactoryHalHidl;
-    sp<IDevice> mDevice;
-    sp<IPrimaryDevice> mPrimaryDevice;  // Null if it's not a primary device.
+    sp<::android::hardware::audio::CPP_VERSION::IDevice> mDevice;
+    sp<::android::hardware::audio::CPP_VERSION::IPrimaryDevice> mPrimaryDevice;
+    // Null if it's not a primary device.
 
     // Can not be constructed directly by clients.
-    explicit DeviceHalHidl(const sp<IDevice>& device);
+    explicit DeviceHalHidl(const sp<::android::hardware::audio::CPP_VERSION::IDevice>& device);
+    explicit DeviceHalHidl(
+            const sp<::android::hardware::audio::CPP_VERSION::IPrimaryDevice>& device);
 
     // The destructor automatically closes the device.
     virtual ~DeviceHalHidl();
@@ -152,7 +151,6 @@
     template <typename HalPort> status_t getAudioPortImpl(HalPort *port);
 };
 
-} // namespace CPP_VERSION
 } // namespace android
 
 #endif // ANDROID_HARDWARE_DEVICE_HAL_HIDL_H
diff --git a/media/libaudiohal/impl/DeviceHalLocal.cpp b/media/libaudiohal/impl/DeviceHalLocal.cpp
index e0304af..1384c1e 100644
--- a/media/libaudiohal/impl/DeviceHalLocal.cpp
+++ b/media/libaudiohal/impl/DeviceHalLocal.cpp
@@ -23,7 +23,6 @@
 #include "StreamHalLocal.h"
 
 namespace android {
-namespace CPP_VERSION {
 
 DeviceHalLocal::DeviceHalLocal(audio_hw_device_t *dev)
         : mDev(dev) {
@@ -245,5 +244,4 @@
     mDev->close_input_stream(mDev, stream_in);
 }
 
-} // namespace CPP_VERSION
 } // namespace android
diff --git a/media/libaudiohal/impl/DeviceHalLocal.h b/media/libaudiohal/impl/DeviceHalLocal.h
index ee1d2c5..b06e253 100644
--- a/media/libaudiohal/impl/DeviceHalLocal.h
+++ b/media/libaudiohal/impl/DeviceHalLocal.h
@@ -21,7 +21,6 @@
 #include <media/audiohal/DeviceHalInterface.h>
 
 namespace android {
-namespace CPP_VERSION {
 
 class DeviceHalLocal : public DeviceHalInterface
 {
@@ -148,7 +147,6 @@
     virtual ~DeviceHalLocal();
 };
 
-} // namespace CPP_VERSION
 } // namespace android
 
 #endif // ANDROID_HARDWARE_DEVICE_HAL_LOCAL_H
diff --git a/media/libaudiohal/impl/DevicesFactoryHalHidl.cpp b/media/libaudiohal/impl/DevicesFactoryHalHidl.cpp
index 1c0eacb..f475729 100644
--- a/media/libaudiohal/impl/DevicesFactoryHalHidl.cpp
+++ b/media/libaudiohal/impl/DevicesFactoryHalHidl.cpp
@@ -31,14 +31,13 @@
 #include "DevicesFactoryHalHidl.h"
 
 using ::android::hardware::audio::CPP_VERSION::IDevice;
-using ::android::hardware::audio::CPP_VERSION::Result;
+using ::android::hardware::audio::CORE_TYPES_CPP_VERSION::Result;
 using ::android::hardware::Return;
 using ::android::hardware::Void;
 using ::android::hidl::manager::V1_0::IServiceManager;
 using ::android::hidl::manager::V1_0::IServiceNotification;
 
 namespace android {
-namespace CPP_VERSION {
 
 class ServiceNotificationListener : public IServiceNotification {
   public:
@@ -115,14 +114,37 @@
     if (status != OK) return status;
     Result retval = Result::NOT_INITIALIZED;
     for (const auto& factory : factories) {
-        Return<void> ret = factory->openDevice(
-                hidlId,
-                [&](Result r, const sp<IDevice>& result) {
-                    retval = r;
-                    if (retval == Result::OK) {
-                        *device = new DeviceHalHidl(result);
-                    }
-                });
+        Return<void> ret;
+        if (strcmp(name, AUDIO_HARDWARE_MODULE_ID_PRIMARY) == 0) {
+            // In V7.1 it's not possible to cast IDevice back to IPrimaryDevice,
+            // thus openPrimaryDevice must be used.
+#if MAJOR_VERSION == 7 && MINOR_VERSION == 1
+            ret = factory->openPrimaryDevice_7_1(
+#else
+            ret = factory->openPrimaryDevice(
+#endif
+                    [&](Result r,
+                        const sp<::android::hardware::audio::CPP_VERSION::IPrimaryDevice>& result) {
+                        retval = r;
+                        if (retval == Result::OK) {
+                            *device = new DeviceHalHidl(result);
+                        }
+                    });
+        } else {
+#if MAJOR_VERSION == 7 && MINOR_VERSION == 1
+            ret = factory->openDevice_7_1(
+#else
+            ret = factory->openDevice(
+#endif
+                    hidlId,
+                    [&](Result r,
+                        const sp<::android::hardware::audio::CPP_VERSION::IDevice>& result) {
+                        retval = r;
+                        if (retval == Result::OK) {
+                            *device = new DeviceHalHidl(result);
+                        }
+                    });
+        }
         if (!ret.isOk()) return FAILED_TRANSACTION;
         switch (retval) {
             // Device was found and was initialized successfully.
@@ -178,7 +200,8 @@
     return NO_ERROR;
 }
 
-void DevicesFactoryHalHidl::addDeviceFactory(sp<IDevicesFactory> factory, bool needToNotify) {
+void DevicesFactoryHalHidl::addDeviceFactory(
+        sp<::android::hardware::audio::CPP_VERSION::IDevicesFactory> factory, bool needToNotify) {
     // It is assumed that the DevicesFactoryHalInterface instance is owned
     // by AudioFlinger and thus have the same lifespan.
     factory->linkToDeath(HalDeathHandler::getInstance(), 0 /*cookie*/);
@@ -198,10 +221,10 @@
     }
 }
 
-std::vector<sp<IDevicesFactory>> DevicesFactoryHalHidl::copyDeviceFactories() {
+std::vector<sp<::android::hardware::audio::CPP_VERSION::IDevicesFactory>>
+        DevicesFactoryHalHidl::copyDeviceFactories() {
     std::lock_guard<std::mutex> lock(mLock);
     return mDeviceFactories;
 }
 
-} // namespace CPP_VERSION
 } // namespace android
diff --git a/media/libaudiohal/impl/DevicesFactoryHalHidl.h b/media/libaudiohal/impl/DevicesFactoryHalHidl.h
index b46259b..ffd229d 100644
--- a/media/libaudiohal/impl/DevicesFactoryHalHidl.h
+++ b/media/libaudiohal/impl/DevicesFactoryHalHidl.h
@@ -30,7 +30,6 @@
 using ::android::hardware::audio::CPP_VERSION::IDevicesFactory;
 
 namespace android {
-namespace CPP_VERSION {
 
 class DevicesFactoryHalHidl : public DevicesFactoryHalInterface
 {
@@ -61,7 +60,6 @@
     virtual ~DevicesFactoryHalHidl() = default;
 };
 
-} // namespace CPP_VERSION
 } // namespace android
 
 #endif // ANDROID_HARDWARE_DEVICES_FACTORY_HAL_HIDL_H
diff --git a/media/libaudiohal/impl/DevicesFactoryHalHybrid.cpp b/media/libaudiohal/impl/DevicesFactoryHalHybrid.cpp
index cde8d85..d684c27 100644
--- a/media/libaudiohal/impl/DevicesFactoryHalHybrid.cpp
+++ b/media/libaudiohal/impl/DevicesFactoryHalHybrid.cpp
@@ -22,7 +22,6 @@
 #include "DevicesFactoryHalLocal.h"
 
 namespace android {
-namespace CPP_VERSION {
 
 DevicesFactoryHalHybrid::DevicesFactoryHalHybrid(sp<IDevicesFactory> hidlFactory)
         : mLocalFactory(new DevicesFactoryHalLocal()),
@@ -51,11 +50,9 @@
     return INVALID_OPERATION;
 }
 
-} // namespace CPP_VERSION
-
 extern "C" __attribute__((visibility("default"))) void* createIDevicesFactory() {
     auto service = hardware::audio::CPP_VERSION::IDevicesFactory::getService();
-    return service ? new CPP_VERSION::DevicesFactoryHalHybrid(service) : nullptr;
+    return service ? new DevicesFactoryHalHybrid(service) : nullptr;
 }
 
 } // namespace android
diff --git a/media/libaudiohal/impl/DevicesFactoryHalHybrid.h b/media/libaudiohal/impl/DevicesFactoryHalHybrid.h
index 5baefa4b..221584c 100644
--- a/media/libaudiohal/impl/DevicesFactoryHalHybrid.h
+++ b/media/libaudiohal/impl/DevicesFactoryHalHybrid.h
@@ -25,7 +25,6 @@
 using ::android::hardware::audio::CPP_VERSION::IDevicesFactory;
 
 namespace android {
-namespace CPP_VERSION {
 
 class DevicesFactoryHalHybrid : public DevicesFactoryHalInterface
 {
@@ -49,7 +48,6 @@
     sp<DevicesFactoryHalInterface> mHidlFactory;
 };
 
-} // namespace CPP_VERSION
 } // namespace android
 
 #endif // ANDROID_HARDWARE_DEVICES_FACTORY_HAL_HYBRID_H
diff --git a/media/libaudiohal/impl/DevicesFactoryHalLocal.cpp b/media/libaudiohal/impl/DevicesFactoryHalLocal.cpp
index af67ff5..13a9acd 100644
--- a/media/libaudiohal/impl/DevicesFactoryHalLocal.cpp
+++ b/media/libaudiohal/impl/DevicesFactoryHalLocal.cpp
@@ -26,7 +26,6 @@
 #include "DevicesFactoryHalLocal.h"
 
 namespace android {
-namespace CPP_VERSION {
 
 static status_t load_audio_interface(const char *if_name, audio_hw_device_t **dev)
 {
@@ -67,5 +66,4 @@
     return rc;
 }
 
-} // namespace CPP_VERSION
 } // namespace android
diff --git a/media/libaudiohal/impl/DevicesFactoryHalLocal.h b/media/libaudiohal/impl/DevicesFactoryHalLocal.h
index d2b9104..a0da125 100644
--- a/media/libaudiohal/impl/DevicesFactoryHalLocal.h
+++ b/media/libaudiohal/impl/DevicesFactoryHalLocal.h
@@ -24,7 +24,6 @@
 #include "DeviceHalLocal.h"
 
 namespace android {
-namespace CPP_VERSION {
 
 class DevicesFactoryHalLocal : public DevicesFactoryHalInterface
 {
@@ -54,7 +53,6 @@
     virtual ~DevicesFactoryHalLocal() {}
 };
 
-} // namespace CPP_VERSION
 } // namespace android
 
 #endif // ANDROID_HARDWARE_DEVICES_FACTORY_HAL_LOCAL_H
diff --git a/media/libaudiohal/impl/EffectBufferHalHidl.cpp b/media/libaudiohal/impl/EffectBufferHalHidl.cpp
index 5367972..65297af 100644
--- a/media/libaudiohal/impl/EffectBufferHalHidl.cpp
+++ b/media/libaudiohal/impl/EffectBufferHalHidl.cpp
@@ -31,7 +31,6 @@
 
 namespace android {
 namespace effect {
-namespace CPP_VERSION {
 
 // static
 uint64_t EffectBufferHalHidl::makeUniqueId() {
@@ -144,5 +143,4 @@
 }
 
 } // namespace effect
-} // namespace CPP_VERSION
 } // namespace android
diff --git a/media/libaudiohal/impl/EffectBufferHalHidl.h b/media/libaudiohal/impl/EffectBufferHalHidl.h
index 4826813..a9df68b 100644
--- a/media/libaudiohal/impl/EffectBufferHalHidl.h
+++ b/media/libaudiohal/impl/EffectBufferHalHidl.h
@@ -28,7 +28,6 @@
 
 namespace android {
 namespace effect {
-namespace CPP_VERSION {
 
 using namespace ::android::hardware::audio::effect::CPP_VERSION;
 
@@ -74,7 +73,6 @@
     status_t init();
 };
 
-} // namespace CPP_VERSION
 } // namespace effect
 } // namespace android
 
diff --git a/media/libaudiohal/impl/EffectHalHidl.cpp b/media/libaudiohal/impl/EffectHalHidl.cpp
index 51ad146..1bb1e5f 100644
--- a/media/libaudiohal/impl/EffectHalHidl.cpp
+++ b/media/libaudiohal/impl/EffectHalHidl.cpp
@@ -36,7 +36,6 @@
 
 namespace android {
 namespace effect {
-namespace CPP_VERSION {
 
 using namespace ::android::hardware::audio::common::CPP_VERSION;
 using namespace ::android::hardware::audio::effect::CPP_VERSION;
@@ -310,6 +309,5 @@
     return result;
 }
 
-} // namespace CPP_VERSION
 } // namespace effect
 } // namespace android
diff --git a/media/libaudiohal/impl/EffectHalHidl.h b/media/libaudiohal/impl/EffectHalHidl.h
index 8e46638..07745db 100644
--- a/media/libaudiohal/impl/EffectHalHidl.h
+++ b/media/libaudiohal/impl/EffectHalHidl.h
@@ -28,7 +28,6 @@
 
 namespace android {
 namespace effect {
-namespace CPP_VERSION {
 
 using namespace ::android::hardware::audio::effect::CPP_VERSION;
 
@@ -63,7 +62,7 @@
 
     virtual status_t dump(int fd);
 
-    uint64_t effectId() const { return mEffectId; }
+    virtual uint64_t effectId() const { return mEffectId; }
 
   private:
     friend class EffectsFactoryHalHidl;
@@ -96,7 +95,6 @@
     status_t setProcessBuffers();
 };
 
-} // namespace CPP_VERSION
 } // namespace effect
 } // namespace android
 
diff --git a/media/libaudiohal/impl/EffectsFactoryHalHidl.cpp b/media/libaudiohal/impl/EffectsFactoryHalHidl.cpp
index ffe0d72..90954b2 100644
--- a/media/libaudiohal/impl/EffectsFactoryHalHidl.cpp
+++ b/media/libaudiohal/impl/EffectsFactoryHalHidl.cpp
@@ -33,7 +33,6 @@
 
 namespace android {
 namespace effect {
-namespace CPP_VERSION {
 
 using namespace ::android::hardware::audio::common::CPP_VERSION;
 using namespace ::android::hardware::audio::effect::CPP_VERSION;
@@ -204,12 +203,11 @@
     return EffectBufferHalHidl::mirror(external, size, buffer);
 }
 
-} // namespace CPP_VERSION
 } // namespace effect
 
 extern "C" __attribute__((visibility("default"))) void* createIEffectsFactory() {
     auto service = hardware::audio::effect::CPP_VERSION::IEffectsFactory::getService();
-    return service ? new effect::CPP_VERSION::EffectsFactoryHalHidl(service) : nullptr;
+    return service ? new effect::EffectsFactoryHalHidl(service) : nullptr;
 }
 
 } // namespace android
diff --git a/media/libaudiohal/impl/EffectsFactoryHalHidl.h b/media/libaudiohal/impl/EffectsFactoryHalHidl.h
index ff26d9f..7491133 100644
--- a/media/libaudiohal/impl/EffectsFactoryHalHidl.h
+++ b/media/libaudiohal/impl/EffectsFactoryHalHidl.h
@@ -24,10 +24,9 @@
 
 namespace android {
 namespace effect {
-namespace CPP_VERSION {
 
 using ::android::hardware::hidl_vec;
-using ::android::CPP_VERSION::ConversionHelperHidl;
+using ::android::ConversionHelperHidl;
 using namespace ::android::hardware::audio::effect::CPP_VERSION;
 
 class EffectsFactoryHalHidl : public EffectsFactoryHalInterface, public ConversionHelperHidl
@@ -70,7 +69,6 @@
     status_t queryAllDescriptors();
 };
 
-} // namespace CPP_VERSION
 } // namespace effect
 } // namespace android
 
diff --git a/media/libaudiohal/impl/ParameterUtils.h b/media/libaudiohal/impl/ParameterUtils.h
index 9cab72e..b5dcb9d 100644
--- a/media/libaudiohal/impl/ParameterUtils.h
+++ b/media/libaudiohal/impl/ParameterUtils.h
@@ -16,17 +16,16 @@
 
 #pragma once
 
-#include PATH(android/hardware/audio/FILE_VERSION/types.h)
+#include PATH(android/hardware/audio/CORE_TYPES_FILE_VERSION/types.h)
 #include <hidl/HidlSupport.h>
 
-using ::android::hardware::audio::CPP_VERSION::ParameterValue;
-using ::android::hardware::audio::CPP_VERSION::Result;
+using ::android::hardware::audio::CORE_TYPES_CPP_VERSION::ParameterValue;
+using ::android::hardware::audio::CORE_TYPES_CPP_VERSION::Result;
 using ::android::hardware::Return;
 using ::android::hardware::hidl_vec;
 using ::android::hardware::hidl_string;
 
 namespace android {
-namespace CPP_VERSION {
 namespace utils {
 
 #if MAJOR_VERSION == 2
@@ -56,5 +55,4 @@
 #endif
 
 } // namespace utils
-} // namespace CPP_VERSION
 } // namespace android
diff --git a/media/libaudiohal/impl/StreamHalHidl.cpp b/media/libaudiohal/impl/StreamHalHidl.cpp
index e63aded..703d302 100644
--- a/media/libaudiohal/impl/StreamHalHidl.cpp
+++ b/media/libaudiohal/impl/StreamHalHidl.cpp
@@ -23,29 +23,26 @@
 #include <mediautils/SchedulingPolicyService.h>
 #include <utils/Log.h>
 
-#include PATH(android/hardware/audio/FILE_VERSION/IStreamOutCallback.h)
+#include PATH(android/hardware/audio/CORE_TYPES_FILE_VERSION/IStreamOutCallback.h)
 #include <HidlUtils.h>
 #include <util/CoreUtils.h>
 
 #include "DeviceHalHidl.h"
-#include "EffectHalHidl.h"
 #include "ParameterUtils.h"
 #include "StreamHalHidl.h"
 
-using ::android::hardware::audio::common::CPP_VERSION::implementation::HidlUtils;
-using ::android::hardware::audio::CPP_VERSION::implementation::CoreUtils;
+using ::android::hardware::audio::common::COMMON_TYPES_CPP_VERSION::implementation::HidlUtils;
+using ::android::hardware::audio::CORE_TYPES_CPP_VERSION::implementation::CoreUtils;
 using ::android::hardware::MQDescriptorSync;
 using ::android::hardware::Return;
 using ::android::hardware::Void;
 
 namespace android {
-namespace CPP_VERSION {
 
-using EffectHalHidl = ::android::effect::CPP_VERSION::EffectHalHidl;
 using ReadCommand = ::android::hardware::audio::CPP_VERSION::IStreamIn::ReadCommand;
 
-using namespace ::android::hardware::audio::common::CPP_VERSION;
-using namespace ::android::hardware::audio::CPP_VERSION;
+using namespace ::android::hardware::audio::common::COMMON_TYPES_CPP_VERSION;
+using namespace ::android::hardware::audio::CORE_TYPES_CPP_VERSION;
 
 StreamHalHidl::StreamHalHidl(IStream *stream)
         : ConversionHelperHidl("Stream"),
@@ -137,14 +134,12 @@
 
 status_t StreamHalHidl::addEffect(sp<EffectHalInterface> effect) {
     if (!mStream) return NO_INIT;
-    return processReturn("addEffect", mStream->addEffect(
-                    static_cast<EffectHalHidl*>(effect.get())->effectId()));
+    return processReturn("addEffect", mStream->addEffect(effect->effectId()));
 }
 
 status_t StreamHalHidl::removeEffect(sp<EffectHalInterface> effect) {
     if (!mStream) return NO_INIT;
-    return processReturn("removeEffect", mStream->removeEffect(
-                    static_cast<EffectHalHidl*>(effect.get())->effectId()));
+    return processReturn("removeEffect", mStream->removeEffect(effect->effectId()));
 }
 
 status_t StreamHalHidl::standby() {
@@ -328,7 +323,8 @@
 
 }  // namespace
 
-StreamOutHalHidl::StreamOutHalHidl(const sp<IStreamOut>& stream)
+StreamOutHalHidl::StreamOutHalHidl(
+        const sp<::android::hardware::audio::CPP_VERSION::IStreamOut>& stream)
         : StreamHalHidl(stream.get()), mStream(stream), mWriterClient(0), mEfGroup(nullptr) {
 }
 
@@ -644,7 +640,11 @@
 #elif MAJOR_VERSION >= 4
 status_t StreamOutHalHidl::updateSourceMetadata(
         const StreamOutHalInterface::SourceMetadata& sourceMetadata) {
-    CPP_VERSION::SourceMetadata hidlMetadata;
+#if MAJOR_VERSION == 4
+    ::android::hardware::audio::CORE_TYPES_CPP_VERSION::SourceMetadata hidlMetadata;
+#else
+    ::android::hardware::audio::common::COMMON_TYPES_CPP_VERSION::SourceMetadata hidlMetadata;
+#endif
     if (status_t status = CoreUtils::sourceMetadataFromHalV7(
                     sourceMetadata.tracks, true /*ignoreNonVendorTags*/, &hidlMetadata);
             status != OK) {
@@ -755,7 +755,7 @@
                     static_cast<TimestretchFallbackMode>(playbackRate.mFallbackMode)}));
 }
 
-#include PATH(android/hardware/audio/FILE_VERSION/IStreamOutEventCallback.h)
+#include PATH(android/hardware/audio/CORE_TYPES_FILE_VERSION/IStreamOutEventCallback.h)
 
 namespace {
 
@@ -820,7 +820,8 @@
 }
 
 
-StreamInHalHidl::StreamInHalHidl(const sp<IStreamIn>& stream)
+StreamInHalHidl::StreamInHalHidl(
+        const sp<::android::hardware::audio::CPP_VERSION::IStreamIn>& stream)
         : StreamHalHidl(stream.get()), mStream(stream), mReaderClient(0), mEfGroup(nullptr) {
 }
 
@@ -1033,7 +1034,11 @@
 
 status_t StreamInHalHidl::updateSinkMetadata(const
         StreamInHalInterface::SinkMetadata& sinkMetadata) {
-    CPP_VERSION::SinkMetadata hidlMetadata;
+#if MAJOR_VERSION == 4
+    ::android::hardware::audio::CORE_TYPES_CPP_VERSION::SinkMetadata hidlMetadata;
+#else
+    ::android::hardware::audio::common::COMMON_TYPES_CPP_VERSION::SinkMetadata hidlMetadata;
+#endif
     if (status_t status = CoreUtils::sinkMetadataFromHalV7(
                     sinkMetadata.tracks, true /*ignoreNonVendorTags*/, &hidlMetadata);
             status != OK) {
@@ -1068,5 +1073,4 @@
 }
 #endif
 
-} // namespace CPP_VERSION
 } // namespace android
diff --git a/media/libaudiohal/impl/StreamHalHidl.h b/media/libaudiohal/impl/StreamHalHidl.h
index 6f5dd04..97ad87d 100644
--- a/media/libaudiohal/impl/StreamHalHidl.h
+++ b/media/libaudiohal/impl/StreamHalHidl.h
@@ -19,20 +19,19 @@
 
 #include <atomic>
 
-#include PATH(android/hardware/audio/FILE_VERSION/IStream.h)
+#include PATH(android/hardware/audio/CORE_TYPES_FILE_VERSION/IStream.h)
 #include PATH(android/hardware/audio/FILE_VERSION/IStreamIn.h)
 #include PATH(android/hardware/audio/FILE_VERSION/IStreamOut.h)
 #include <fmq/EventFlag.h>
 #include <fmq/MessageQueue.h>
+#include <media/audiohal/EffectHalInterface.h>
 #include <media/audiohal/StreamHalInterface.h>
 #include <mediautils/Synchronization.h>
 
 #include "ConversionHelperHidl.h"
 #include "StreamPowerLog.h"
 
-using ::android::hardware::audio::CPP_VERSION::IStream;
-using ::android::hardware::audio::CPP_VERSION::IStreamIn;
-using ::android::hardware::audio::CPP_VERSION::IStreamOut;
+using ::android::hardware::audio::CORE_TYPES_CPP_VERSION::IStream;
 using ::android::hardware::EventFlag;
 using ::android::hardware::MessageQueue;
 using ::android::hardware::Return;
@@ -42,7 +41,6 @@
 using WriteStatus = ::android::hardware::audio::CPP_VERSION::IStreamOut::WriteStatus;
 
 namespace android {
-namespace CPP_VERSION {
 
 class DeviceHalHidl;
 
@@ -199,7 +197,7 @@
 
     mediautils::atomic_wp<StreamOutHalInterfaceCallback> mCallback;
     mediautils::atomic_wp<StreamOutHalInterfaceEventCallback> mEventCallback;
-    const sp<IStreamOut> mStream;
+    const sp<::android::hardware::audio::CPP_VERSION::IStreamOut> mStream;
     std::unique_ptr<CommandMQ> mCommandMQ;
     std::unique_ptr<DataMQ> mDataMQ;
     std::unique_ptr<StatusMQ> mStatusMQ;
@@ -207,7 +205,7 @@
     EventFlag* mEfGroup;
 
     // Can not be constructed directly by clients.
-    StreamOutHalHidl(const sp<IStreamOut>& stream);
+    StreamOutHalHidl(const sp<::android::hardware::audio::CPP_VERSION::IStreamOut>& stream);
 
     virtual ~StreamOutHalHidl();
 
@@ -255,7 +253,7 @@
     typedef MessageQueue<uint8_t, hardware::kSynchronizedReadWrite> DataMQ;
     typedef MessageQueue<ReadStatus, hardware::kSynchronizedReadWrite> StatusMQ;
 
-    const sp<IStreamIn> mStream;
+    const sp<::android::hardware::audio::CPP_VERSION::IStreamIn> mStream;
     std::unique_ptr<CommandMQ> mCommandMQ;
     std::unique_ptr<DataMQ> mDataMQ;
     std::unique_ptr<StatusMQ> mStatusMQ;
@@ -263,7 +261,7 @@
     EventFlag* mEfGroup;
 
     // Can not be constructed directly by clients.
-    StreamInHalHidl(const sp<IStreamIn>& stream);
+    StreamInHalHidl(const sp<::android::hardware::audio::CPP_VERSION::IStreamIn>& stream);
 
     virtual ~StreamInHalHidl();
 
@@ -273,7 +271,6 @@
     status_t prepareForReading(size_t bufferSize);
 };
 
-} // namespace CPP_VERSION
 } // namespace android
 
 #endif // ANDROID_HARDWARE_STREAM_HAL_HIDL_H
diff --git a/media/libaudiohal/impl/StreamHalLocal.cpp b/media/libaudiohal/impl/StreamHalLocal.cpp
index 11fac61..477f510 100644
--- a/media/libaudiohal/impl/StreamHalLocal.cpp
+++ b/media/libaudiohal/impl/StreamHalLocal.cpp
@@ -27,7 +27,6 @@
 #include "StreamHalLocal.h"
 
 namespace android {
-namespace CPP_VERSION {
 
 StreamHalLocal::StreamHalLocal(audio_stream_t *stream, sp<DeviceHalLocal> device)
         : mDevice(device),
@@ -518,7 +517,4 @@
 }
 #endif
 
-} // namespace CPP_VERSION
 } // namespace android
-
-
diff --git a/media/libaudiohal/impl/StreamHalLocal.h b/media/libaudiohal/impl/StreamHalLocal.h
index 493c521..e6e5037 100644
--- a/media/libaudiohal/impl/StreamHalLocal.h
+++ b/media/libaudiohal/impl/StreamHalLocal.h
@@ -21,7 +21,6 @@
 #include "StreamPowerLog.h"
 
 namespace android {
-namespace CPP_VERSION {
 
 class DeviceHalLocal;
 
@@ -246,7 +245,6 @@
     void doUpdateSinkMetadataV7(const SinkMetadata& sinkMetadata);
 };
 
-} // namespace CPP_VERSION
 } // namespace android
 
 #endif // ANDROID_HARDWARE_STREAM_HAL_LOCAL_H
diff --git a/media/libaudiohal/impl/StreamPowerLog.h b/media/libaudiohal/impl/StreamPowerLog.h
index f6a554b..c08ee47 100644
--- a/media/libaudiohal/impl/StreamPowerLog.h
+++ b/media/libaudiohal/impl/StreamPowerLog.h
@@ -24,7 +24,6 @@
 #include <system/audio.h>
 
 namespace android {
-namespace CPP_VERSION {
 
 class StreamPowerLog {
 public:
@@ -99,7 +98,6 @@
     size_t mFrameSize;
 };
 
-} // namespace CPP_VERSION
 } // namespace android
 
 #endif // ANDROID_HARDWARE_STREAM_POWER_LOG_H
diff --git a/media/libaudiohal/include/media/audiohal/EffectHalInterface.h b/media/libaudiohal/include/media/audiohal/EffectHalInterface.h
index 03165bd..2969c92 100644
--- a/media/libaudiohal/include/media/audiohal/EffectHalInterface.h
+++ b/media/libaudiohal/include/media/audiohal/EffectHalInterface.h
@@ -57,6 +57,9 @@
 
     virtual status_t dump(int fd) = 0;
 
+    // Unique effect ID to use with the core HAL.
+    virtual uint64_t effectId() const = 0;
+
   protected:
     // Subclasses can not be constructed directly by clients.
     EffectHalInterface() {}
diff --git a/media/libeffects/downmix/Android.bp b/media/libeffects/downmix/Android.bp
index b26d028..abe622d 100644
--- a/media/libeffects/downmix/Android.bp
+++ b/media/libeffects/downmix/Android.bp
@@ -24,6 +24,10 @@
     vendor: true,
     srcs: ["EffectDownmix.cpp"],
 
+    export_include_dirs: [
+        ".",
+    ],
+
     shared_libs: [
         "libaudioutils",
         "libcutils",
diff --git a/media/libeffects/downmix/tests/Android.bp b/media/libeffects/downmix/tests/Android.bp
index 4940117..392a6fa 100644
--- a/media/libeffects/downmix/tests/Android.bp
+++ b/media/libeffects/downmix/tests/Android.bp
@@ -18,9 +18,6 @@
     gtest: true,
     host_supported: true,
     vendor: true,
-    include_dirs: [
-        "frameworks/av/media/libeffects/downmix",
-    ],
     header_libs: [
         "libaudioeffects",
     ],
@@ -51,9 +48,6 @@
     name:"downmixtest",
     host_supported: false,
     proprietary: true,
-    include_dirs: [
-        "frameworks/av/media/libeffects/downmix",
-    ],
 
     header_libs: [
         "libaudioeffects",
diff --git a/media/libeffects/lvm/benchmarks/Android.bp b/media/libeffects/lvm/benchmarks/Android.bp
index 8a25b85..c21c5f2 100644
--- a/media/libeffects/lvm/benchmarks/Android.bp
+++ b/media/libeffects/lvm/benchmarks/Android.bp
@@ -29,9 +29,6 @@
     name: "reverb_benchmark",
     vendor: true,
     host_supported: true,
-    include_dirs: [
-        "frameworks/av/media/libeffects/lvm/wrapper/Reverb",
-    ],
     srcs: ["reverb_benchmark.cpp"],
     static_libs: [
         "libreverb",
diff --git a/media/libeffects/lvm/tests/Android.bp b/media/libeffects/lvm/tests/Android.bp
index 9939ed1..7d7f8b9 100644
--- a/media/libeffects/lvm/tests/Android.bp
+++ b/media/libeffects/lvm/tests/Android.bp
@@ -18,10 +18,6 @@
         "EffectReverbTest.cpp",
         "EffectTestHelper.cpp",
     ],
-    include_dirs: [
-        "frameworks/av/media/libeffects/lvm/lib/Common/lib",
-        "frameworks/av/media/libeffects/lvm/wrapper/Reverb",
-    ],
     static_libs: [
         "libaudioutils",
         "libreverb",
@@ -108,10 +104,6 @@
     proprietary: true,
     gtest: false,
 
-    include_dirs: [
-        "frameworks/av/media/libeffects/lvm/wrapper/Reverb",
-    ],
-
     header_libs: [
         "libaudioeffects",
     ],
diff --git a/media/libeffects/lvm/wrapper/Android.bp b/media/libeffects/lvm/wrapper/Android.bp
index e169e3c..1287514 100644
--- a/media/libeffects/lvm/wrapper/Android.bp
+++ b/media/libeffects/lvm/wrapper/Android.bp
@@ -89,6 +89,8 @@
 
     local_include_dirs: ["Reverb"],
 
+    export_include_dirs: ["Reverb"],
+
     header_libs: [
         "libhardware_headers",
         "libaudioeffects",
diff --git a/media/libheadtracking/Android.bp b/media/libheadtracking/Android.bp
index b0563e2..1d41889 100644
--- a/media/libheadtracking/Android.bp
+++ b/media/libheadtracking/Android.bp
@@ -14,6 +14,7 @@
       "HeadTrackingProcessor.cpp",
       "ModeSelector.cpp",
       "Pose.cpp",
+      "PoseBias.cpp",
       "PoseDriftCompensator.cpp",
       "PoseRateLimiter.cpp",
       "QuaternionUtil.cpp",
@@ -67,6 +68,7 @@
         "HeadTrackingProcessor-test.cpp",
         "ModeSelector-test.cpp",
         "Pose-test.cpp",
+        "PoseBias-test.cpp",
         "PoseDriftCompensator-test.cpp",
         "PoseRateLimiter-test.cpp",
         "QuaternionUtil-test.cpp",
diff --git a/media/libheadtracking/HeadTrackingProcessor.cpp b/media/libheadtracking/HeadTrackingProcessor.cpp
index f2f15df..71fae8a 100644
--- a/media/libheadtracking/HeadTrackingProcessor.cpp
+++ b/media/libheadtracking/HeadTrackingProcessor.cpp
@@ -17,7 +17,7 @@
 #include "media/HeadTrackingProcessor.h"
 
 #include "ModeSelector.h"
-#include "PoseDriftCompensator.h"
+#include "PoseBias.h"
 #include "QuaternionUtil.h"
 #include "ScreenHeadFusion.h"
 #include "StillnessDetector.h"
@@ -33,14 +33,6 @@
   public:
     HeadTrackingProcessorImpl(const Options& options, HeadTrackingMode initialMode)
         : mOptions(options),
-          mHeadPoseDriftCompensator(PoseDriftCompensator::Options{
-                  .translationalDriftTimeConstant = options.translationalDriftTimeConstant,
-                  .rotationalDriftTimeConstant = options.rotationalDriftTimeConstant,
-          }),
-          mScreenPoseDriftCompensator(PoseDriftCompensator::Options{
-                  .translationalDriftTimeConstant = options.translationalDriftTimeConstant,
-                  .rotationalDriftTimeConstant = options.rotationalDriftTimeConstant,
-          }),
           mHeadStillnessDetector(StillnessDetector::Options{
                   .defaultValue = false,
                   .windowDuration = options.autoRecenterWindowDuration,
@@ -65,7 +57,7 @@
                             const Twist3f& headTwist) override {
         Pose3f predictedWorldToHead =
                 worldToHead * integrate(headTwist, mOptions.predictionDuration);
-        mHeadPoseDriftCompensator.setInput(timestamp, predictedWorldToHead);
+        mHeadPoseBias.setInput(predictedWorldToHead);
         mHeadStillnessDetector.setInput(timestamp, predictedWorldToHead);
         mWorldToHeadTimestamp = timestamp;
     }
@@ -78,7 +70,7 @@
         }
 
         Pose3f worldToLogicalScreen = worldToScreen * Pose3f(rotateY(-mPhysicalToLogicalAngle));
-        mScreenPoseDriftCompensator.setInput(timestamp, worldToLogicalScreen);
+        mScreenPoseBias.setInput(worldToLogicalScreen);
         mScreenStillnessDetector.setInput(timestamp, worldToLogicalScreen);
         mWorldToScreenTimestamp = timestamp;
     }
@@ -94,7 +86,7 @@
     void calculate(int64_t timestamp) override {
         // Handle the screen first, since it might trigger a recentering of the head.
         if (mWorldToScreenTimestamp.has_value()) {
-            const Pose3f worldToLogicalScreen = mScreenPoseDriftCompensator.getOutput();
+            const Pose3f worldToLogicalScreen = mScreenPoseBias.getOutput();
             bool screenStable = mScreenStillnessDetector.calculate(timestamp);
             mModeSelector.setScreenStable(mWorldToScreenTimestamp.value(), screenStable);
             // Whenever the screen is unstable, recenter the head pose.
@@ -107,11 +99,11 @@
 
         // Handle head.
         if (mWorldToHeadTimestamp.has_value()) {
-            Pose3f worldToHead = mHeadPoseDriftCompensator.getOutput();
+            Pose3f worldToHead = mHeadPoseBias.getOutput();
             // Auto-recenter.
             if (mHeadStillnessDetector.calculate(timestamp)) {
                 recenter(true, false);
-                worldToHead = mHeadPoseDriftCompensator.getOutput();
+                worldToHead = mHeadPoseBias.getOutput();
             }
 
             mScreenHeadFusion.setWorldToHeadPose(mWorldToHeadTimestamp.value(), worldToHead);
@@ -142,11 +134,11 @@
 
     void recenter(bool recenterHead, bool recenterScreen) override {
         if (recenterHead) {
-            mHeadPoseDriftCompensator.recenter();
+            mHeadPoseBias.recenter();
             mHeadStillnessDetector.reset();
         }
         if (recenterScreen) {
-            mScreenPoseDriftCompensator.recenter();
+            mScreenPoseBias.recenter();
             mScreenStillnessDetector.reset();
         }
 
@@ -169,8 +161,8 @@
     std::optional<int64_t> mWorldToHeadTimestamp;
     std::optional<int64_t> mWorldToScreenTimestamp;
     Pose3f mHeadToStagePose;
-    PoseDriftCompensator mHeadPoseDriftCompensator;
-    PoseDriftCompensator mScreenPoseDriftCompensator;
+    PoseBias mHeadPoseBias;
+    PoseBias mScreenPoseBias;
     StillnessDetector mHeadStillnessDetector;
     StillnessDetector mScreenStillnessDetector;
     ScreenHeadFusion mScreenHeadFusion;
diff --git a/media/libheadtracking/PoseBias-test.cpp b/media/libheadtracking/PoseBias-test.cpp
new file mode 100644
index 0000000..9f42a2c
--- /dev/null
+++ b/media/libheadtracking/PoseBias-test.cpp
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2022 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.
+ */
+
+#include <gtest/gtest.h>
+
+#include "PoseBias.h"
+#include "QuaternionUtil.h"
+#include "TestUtil.h"
+
+namespace android {
+namespace media {
+namespace {
+
+using Eigen::Quaternionf;
+using Eigen::Vector3f;
+
+TEST(PoseBias, Initial) {
+    PoseBias bias;
+    EXPECT_EQ(bias.getOutput(), Pose3f());
+}
+
+TEST(PoseBias, Basic) {
+    Pose3f pose1({1, 2, 3}, Quaternionf::UnitRandom());
+    Pose3f pose2({4, 5, 6}, Quaternionf::UnitRandom());
+
+    PoseBias bias;
+    bias.setInput(pose1);
+    EXPECT_EQ(pose1, bias.getOutput());
+    bias.recenter();
+    EXPECT_EQ(bias.getOutput(), Pose3f());
+    bias.setInput(pose2);
+    EXPECT_EQ(bias.getOutput(), pose1.inverse() * pose2);
+    bias.recenter();
+    EXPECT_EQ(bias.getOutput(), Pose3f());
+}
+
+}  // namespace
+}  // namespace media
+}  // namespace android
diff --git a/media/libheadtracking/PoseBias.cpp b/media/libheadtracking/PoseBias.cpp
new file mode 100644
index 0000000..33afca6
--- /dev/null
+++ b/media/libheadtracking/PoseBias.cpp
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2022 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.
+ */
+
+#include "PoseBias.h"
+
+namespace android {
+namespace media {
+
+void PoseBias::setInput(const Pose3f& input) {
+    mLastWorldToInput = input;
+}
+
+void PoseBias::recenter() {
+    mBiasToWorld = mLastWorldToInput.inverse();
+}
+
+Pose3f PoseBias::getOutput() const {
+    return mBiasToWorld * mLastWorldToInput;
+}
+
+}  // namespace media
+}  // namespace android
diff --git a/media/libheadtracking/PoseBias.h b/media/libheadtracking/PoseBias.h
new file mode 100644
index 0000000..9acb49d
--- /dev/null
+++ b/media/libheadtracking/PoseBias.h
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2022 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.
+ */
+#pragma once
+
+#include "media/Pose.h"
+
+namespace android {
+namespace media {
+
+/**
+ * Biasing for a stream of poses.
+ *
+ * This filter takes a stream of poses and at any time during the stream, can change the frame of
+ * reference for the stream to be that of the last pose received, via the recenter() operation.
+ *
+ * Typical usage:
+ * PoseBias bias;
+ *
+ * bias.setInput(...);
+ * output = bias.getOutput();
+ * bias.setInput(...);
+ * output = bias.getOutput();
+ * bias.setInput(...);
+ * output = bias.getOutput();
+ * bias.recenter();  // Reference frame is now equal to the last input.
+ * output = bias.getOutput();  // This is now the identity pose.
+ *
+ * There doesn't need to be a 1:1 correspondence between setInput() and getOutput() calls.
+ * The initial bias point is identity.
+ *
+ * This implementation is thread-compatible, but not thread-safe.
+ */
+class PoseBias {
+  public:
+    void setInput(const Pose3f& input);
+
+    void recenter();
+
+    Pose3f getOutput() const;
+
+  private:
+    Pose3f mLastWorldToInput;
+    Pose3f mBiasToWorld;
+};
+
+}  // namespace media
+}  // namespace android
diff --git a/media/libheadtracking/PoseProcessingGraph.png b/media/libheadtracking/PoseProcessingGraph.png
index 2b4ea68..325b667 100644
--- a/media/libheadtracking/PoseProcessingGraph.png
+++ b/media/libheadtracking/PoseProcessingGraph.png
Binary files differ
diff --git a/media/libheadtracking/README.md b/media/libheadtracking/README.md
index 5ec157b..44f7bb2 100644
--- a/media/libheadtracking/README.md
+++ b/media/libheadtracking/README.md
@@ -115,11 +115,9 @@
 #### World
 
 It is sometimes convenient to use an intermediate frame when dealing with
-head-to-screen transforms. The “world” frame is an arbitrary frame of reference
-in the physical world, relative to which we can measure the head pose and screen
-pose. In (very common) cases when we can’t establish such an absolute frame, we
-can take each measurement relative to a separate, arbitrary frame and high-pass
-the result.
+head-to-screen transforms. The “world” frame is a frame of reference in the
+physical world, relative to which we can measure the head pose and screen pose.
+It is arbitrary, but expected to be stable (fixed).
 
 ## Processing Description
 
@@ -133,15 +131,10 @@
 The Predictor block gets pose + twist (pose derivative) and extrapolates to
 obtain a predicted head pose (w/ given latency).
 
-### Drift / Bias Compensator
+### Bias
 
-The Drift / Bias Compensator blocks serve two purposes:
-
-- Compensate for floating reference axes by applying a high-pass filter, which
-  slowly pulls the pose toward identity.
-- Establish the reference frame for the poses by having the ability to set the
-  current pose as the reference for future poses (recentering). Effectively,
-  this is resetting the filter state to identity.
+The Bias blocks establish the reference frame for the poses by having the
+ability to set the current pose as the reference for future poses (recentering).
 
 ### Orientation Compensation
 
@@ -157,7 +150,7 @@
 module may indicate that the user is likely not in front of the screen via the
 “valid” output.
 
-## Stillness Detector
+### Stillness Detector
 
 The stillness detector blocks detect when their incoming pose stream has been
 stable for a given amount of time (allowing for a configurable amount of error).
diff --git a/media/libheadtracking/SensorPoseProvider.cpp b/media/libheadtracking/SensorPoseProvider.cpp
index 0e96b03..f3f9b77 100644
--- a/media/libheadtracking/SensorPoseProvider.cpp
+++ b/media/libheadtracking/SensorPoseProvider.cpp
@@ -351,7 +351,7 @@
                 Eigen::Vector3f rotation = {event.head_tracker.rx, event.head_tracker.ry,
                                             event.head_tracker.rz};
                 Eigen::Vector3f twist = {event.head_tracker.vx, event.head_tracker.vy,
-                                         event.head_tracker.rz};
+                                         event.head_tracker.vz};
                 Eigen::Quaternionf quat = rotationVectorToQuaternion(rotation);
                 bool isNewReference =
                         !discontinutyCount->has_value() ||
diff --git a/media/libheadtracking/include/media/HeadTrackingProcessor.h b/media/libheadtracking/include/media/HeadTrackingProcessor.h
index 2af560e..1744be3 100644
--- a/media/libheadtracking/include/media/HeadTrackingProcessor.h
+++ b/media/libheadtracking/include/media/HeadTrackingProcessor.h
@@ -38,8 +38,6 @@
     struct Options {
         float maxTranslationalVelocity = std::numeric_limits<float>::infinity();
         float maxRotationalVelocity = std::numeric_limits<float>::infinity();
-        float translationalDriftTimeConstant = std::numeric_limits<float>::infinity();
-        float rotationalDriftTimeConstant = std::numeric_limits<float>::infinity();
         int64_t freshnessTimeout = std::numeric_limits<int64_t>::max();
         float predictionDuration = 0;
         int64_t autoRecenterWindowDuration = std::numeric_limits<int64_t>::max();
diff --git a/media/libheadtracking/include/media/Twist.h b/media/libheadtracking/include/media/Twist.h
index e2fc203..291cea3 100644
--- a/media/libheadtracking/include/media/Twist.h
+++ b/media/libheadtracking/include/media/Twist.h
@@ -56,6 +56,16 @@
                mRotationalVelocity.isApprox(other.mRotationalVelocity, prec);
     }
 
+    template<typename T>
+    Twist3f operator*(const T& s) const {
+        return Twist3f(mTranslationalVelocity * s, mRotationalVelocity * s);
+    }
+
+    template<typename T>
+    Twist3f operator/(const T& s) const {
+        return Twist3f(mTranslationalVelocity / s, mRotationalVelocity / s);
+    }
+
   private:
     Eigen::Vector3f mTranslationalVelocity;
     Eigen::Vector3f mRotationalVelocity;
diff --git a/media/libmedia/Android.bp b/media/libmedia/Android.bp
index 4a2523f..2dd5784 100644
--- a/media/libmedia/Android.bp
+++ b/media/libmedia/Android.bp
@@ -19,6 +19,10 @@
     name: "libmedia_headers",
     vendor_available: true,
     min_sdk_version: "29",
+    apex_available: [
+        "//apex_available:platform",
+        "com.android.media.swcodec",
+    ],
 
     export_include_dirs: ["include"],
     header_libs: [
@@ -214,6 +218,11 @@
     name: "libmedia_midiiowrapper",
 
     min_sdk_version: "29",
+    apex_available: [
+        "//apex_available:platform",
+        "com.android.media",
+    ],
+
 
     srcs: ["MidiIoWrapper.cpp"],
 
@@ -441,6 +450,6 @@
 
     apex_available: [
         "//apex_available:platform",
-        "com.android.media"
+        "com.android.media",
     ],
 }
diff --git a/media/libmediaformatshaper/Android.bp b/media/libmediaformatshaper/Android.bp
index bdd1465..7e8f351 100644
--- a/media/libmediaformatshaper/Android.bp
+++ b/media/libmediaformatshaper/Android.bp
@@ -95,10 +95,10 @@
 
     min_sdk_version: "29",
 
-    apex_available: [
-        "//apex_available:platform",
-        "com.android.media",
-    ],
+    // the library lives only in the module
+    // framework accesses with dlopen() and uses "libmediaformatshaper_headers" so both
+    // sides track to the interface.
+    apex_available: ["com.android.media"],
 
     version_script: "exports.lds",
 
diff --git a/media/libmediaplayerservice/nuplayer/AWakeLock.cpp b/media/libmediaplayerservice/nuplayer/AWakeLock.cpp
index af9cf45..c3bd207 100644
--- a/media/libmediaplayerservice/nuplayer/AWakeLock.cpp
+++ b/media/libmediaplayerservice/nuplayer/AWakeLock.cpp
@@ -62,7 +62,8 @@
             binder::Status status = mPowerManager->acquireWakeLock(
                     binder, POWERMANAGER_PARTIAL_WAKE_LOCK,
                     String16("AWakeLock"), String16("media"),
-                    {} /* workSource */, {} /* historyTag */, -1 /* displayId */);
+                    {} /* workSource */, {} /* historyTag */, -1 /* displayId */,
+                    nullptr /* callback */);
             IPCThreadState::self()->restoreCallingIdentity(token);
             if (status.isOk()) {
                 mWakeLockToken = binder;
diff --git a/media/libstagefright/codecs/common/Android.bp b/media/libstagefright/codecs/common/Android.bp
index 08691e7..affc837 100644
--- a/media/libstagefright/codecs/common/Android.bp
+++ b/media/libstagefright/codecs/common/Android.bp
@@ -21,6 +21,10 @@
     name: "libstagefright_enc_common",
     vendor_available: true,
     min_sdk_version: "29",
+    apex_available: [
+        "//apex_available:platform",
+        "com.android.media.swcodec",
+    ],
 
     srcs: ["cmnMemory.c"],
 
diff --git a/media/libstagefright/flac/dec/Android.bp b/media/libstagefright/flac/dec/Android.bp
index 665aae1..83fcc01 100644
--- a/media/libstagefright/flac/dec/Android.bp
+++ b/media/libstagefright/flac/dec/Android.bp
@@ -21,6 +21,12 @@
     name: "libstagefright_flacdec",
     vendor_available: true,
     min_sdk_version: "29",
+    apex_available: [
+        "//apex_available:platform",
+        "com.android.media",
+        "com.android.media.swcodec",
+    ],
+
     host_supported: true,
 
     srcs: [
diff --git a/media/libstagefright/foundation/Android.bp b/media/libstagefright/foundation/Android.bp
index 5f86c22..1b31392 100644
--- a/media/libstagefright/foundation/Android.bp
+++ b/media/libstagefright/foundation/Android.bp
@@ -23,6 +23,11 @@
     vendor_available: true,
     host_supported: true,
     min_sdk_version: "29",
+    apex_available: [
+        "//apex_available:platform",
+        "com.android.media",
+        "com.android.media.swcodec",
+    ],
 }
 
 cc_defaults {
@@ -130,12 +135,19 @@
     name: "libstagefright_foundation",
     defaults: ["libstagefright_foundation_defaults"],
     min_sdk_version: "29",
+    apex_available: [
+        "//apex_available:platform",
+        "com.android.media",
+        "com.android.media.swcodec",
+    ],
 }
 
 cc_library_static {
     name: "libstagefright_foundation_without_imemory",
     defaults: ["libstagefright_foundation_defaults"],
     min_sdk_version: "29",
+    apex_available: ["com.android.media"],
+
 
     cflags: [
         "-Wno-multichar",
diff --git a/media/libstagefright/id3/Android.bp b/media/libstagefright/id3/Android.bp
index 3f5ba47..bea3e34 100644
--- a/media/libstagefright/id3/Android.bp
+++ b/media/libstagefright/id3/Android.bp
@@ -20,6 +20,11 @@
 cc_library_static {
     name: "libstagefright_id3",
     min_sdk_version: "29",
+    apex_available: [
+        "//apex_available:platform",
+        "com.android.media",
+    ],
+
 
     srcs: ["ID3.cpp"],
 
diff --git a/services/audiopolicy/common/managerdefinitions/src/Serializer.cpp b/services/audiopolicy/common/managerdefinitions/src/Serializer.cpp
index 69cad9b..d446e96 100644
--- a/services/audiopolicy/common/managerdefinitions/src/Serializer.cpp
+++ b/services/audiopolicy/common/managerdefinitions/src/Serializer.cpp
@@ -876,10 +876,10 @@
         ALOGE("%s: No version found in root node %s", __func__, rootName);
         return BAD_VALUE;
     }
-    if (version == "7.0") {
+    if (version == "7.0" || version == "7.1") {
         mChannelMasksSeparator = mSamplingRatesSeparator = mFlagsSeparator = " ";
     } else if (version != "1.0") {
-        ALOGE("%s: Version does not match; expected \"1.0\" or \"7.0\" got \"%s\"",
+        ALOGE("%s: Version does not match; expected \"1.0\", \"7.0\", or \"7.1\" got \"%s\"",
                 __func__, version.c_str());
         return BAD_VALUE;
     }
diff --git a/services/audiopolicy/service/AudioPolicyInterfaceImpl.cpp b/services/audiopolicy/service/AudioPolicyInterfaceImpl.cpp
index aba8884..87a350f 100644
--- a/services/audiopolicy/service/AudioPolicyInterfaceImpl.cpp
+++ b/services/audiopolicy/service/AudioPolicyInterfaceImpl.cpp
@@ -166,6 +166,7 @@
                         AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE));
         return Status::ok();
     }
+    Mutex::Autolock _l(mLock);
     AutoCallerClear acc;
     *_aidl_return = VALUE_OR_RETURN_BINDER_STATUS(
             legacy2aidl_audio_policy_dev_state_t_AudioPolicyDeviceState(
diff --git a/services/audiopolicy/service/SpatializerPoseController.cpp b/services/audiopolicy/service/SpatializerPoseController.cpp
index 440a7ff..6a3c9d1 100644
--- a/services/audiopolicy/service/SpatializerPoseController.cpp
+++ b/services/audiopolicy/service/SpatializerPoseController.cpp
@@ -40,25 +40,11 @@
 // This is how fast, in rad/s, we allow rotation angle to shift during rate-limiting.
 constexpr float kMaxRotationalVelocity = 8;
 
-// This should be set to the typical time scale that the translation sensors used drift in. This
-// means, loosely, for how long we can trust the reading to be "accurate enough". This would
-// determine the time constants used for high-pass filtering those readings. If the value is set
-// too high, we may experience drift. If it is set too low, we may experience poses tending toward
-// identity too fast.
-constexpr auto kTranslationalDriftTimeConstant = 40s;
-
-// This should be set to the typical time scale that the rotation sensors used drift in. This
-// means, loosely, for how long we can trust the reading to be "accurate enough". This would
-// determine the time constants used for high-pass filtering those readings. If the value is set
-// too high, we may experience drift. If it is set too low, we may experience poses tending toward
-// identity too fast.
-constexpr auto kRotationalDriftTimeConstant = 60s;
-
 // This is how far into the future we predict the head pose, using linear extrapolation based on
 // twist (velocity). It should be set to a value that matches the characteristic durations of moving
 // one's head. The higher we set this, the more latency we are able to reduce, but setting this too
 // high will result in high prediction errors whenever the head accelerates (changes velocity).
-constexpr auto kPredictionDuration = 10ms;
+constexpr auto kPredictionDuration = 50ms;
 
 // After losing this many consecutive samples from either sensor, we would treat the measurement as
 // stale;
@@ -100,9 +86,6 @@
       mProcessor(createHeadTrackingProcessor(HeadTrackingProcessor::Options{
               .maxTranslationalVelocity = kMaxTranslationalVelocity / kTicksPerSecond,
               .maxRotationalVelocity = kMaxRotationalVelocity / kTicksPerSecond,
-              .translationalDriftTimeConstant =
-                      double(Ticks(kTranslationalDriftTimeConstant).count()),
-              .rotationalDriftTimeConstant = double(Ticks(kRotationalDriftTimeConstant).count()),
               .freshnessTimeout = Ticks(sensorPeriod * kMaxLostSamples).count(),
               .predictionDuration = Ticks(kPredictionDuration).count(),
               .autoRecenterWindowDuration = Ticks(kAutoRecenterWindowDuration).count(),
@@ -253,7 +236,8 @@
                                        const std::optional<Twist3f>& twist, bool isNewReference) {
     std::lock_guard lock(mMutex);
     if (sensor == mHeadSensor) {
-        mProcessor->setWorldToHeadPose(timestamp, pose, twist.value_or(Twist3f()));
+        mProcessor->setWorldToHeadPose(timestamp, pose,
+                                       twist.value_or(Twist3f()) / kTicksPerSecond);
         if (isNewReference) {
             mProcessor->recenter(true, false);
         }
diff --git a/services/mediacodec/Android.bp b/services/mediacodec/Android.bp
index bf4d524..4488efb 100644
--- a/services/mediacodec/Android.bp
+++ b/services/mediacodec/Android.bp
@@ -19,6 +19,7 @@
     name: "mediaswcodec",
     vendor_available: true,
     min_sdk_version: "29",
+    apex_available: ["com.android.media.swcodec"],
 
     srcs: [
         "main_swcodecservice.cpp",
diff --git a/services/mediacodec/registrant/Android.bp b/services/mediacodec/registrant/Android.bp
index d10e339..12cc32a 100644
--- a/services/mediacodec/registrant/Android.bp
+++ b/services/mediacodec/registrant/Android.bp
@@ -10,6 +10,12 @@
 cc_library {
     name: "libmedia_codecserviceregistrant",
     vendor_available: true,
+    min_sdk_version: "29",
+    apex_available: [
+        "//apex_available:platform",
+        "com.android.media.swcodec",
+    ],
+
     srcs: [
         "CodecServiceRegistrant.cpp",
     ],
diff --git a/services/minijail/Android.bp b/services/minijail/Android.bp
index 038197f..decc5fe 100644
--- a/services/minijail/Android.bp
+++ b/services/minijail/Android.bp
@@ -28,6 +28,11 @@
     defaults: ["libavservices_minijail_defaults"],
     vendor_available: true,
     min_sdk_version: "29",
+    apex_available: [
+        "//apex_available:platform",
+        "com.android.media.swcodec",
+    ],
+
     export_include_dirs: ["."],
 }