diff --git a/media/bufferpool/aidl/aidl_api/android.hardware.media.bufferpool2/current/android/hardware/media/bufferpool2/IClientManager.aidl b/media/bufferpool/aidl/aidl_api/android.hardware.media.bufferpool2/current/android/hardware/media/bufferpool2/IClientManager.aidl
index 5899a40..298cb13 100644
--- a/media/bufferpool/aidl/aidl_api/android.hardware.media.bufferpool2/current/android/hardware/media/bufferpool2/IClientManager.aidl
+++ b/media/bufferpool/aidl/aidl_api/android.hardware.media.bufferpool2/current/android/hardware/media/bufferpool2/IClientManager.aidl
@@ -35,6 +35,7 @@
 @VintfStability
 interface IClientManager {
   android.hardware.media.bufferpool2.IClientManager.Registration registerSender(in android.hardware.media.bufferpool2.IAccessor bufferPool);
+  android.hardware.media.bufferpool2.IClientManager.Registration registerPassiveSender(in android.hardware.media.bufferpool2.IAccessor bufferPool);
   @VintfStability
   parcelable Registration {
     long connectionId;
diff --git a/media/bufferpool/aidl/android/hardware/media/bufferpool2/IClientManager.aidl b/media/bufferpool/aidl/android/hardware/media/bufferpool2/IClientManager.aidl
index a3054cb..2bc77bc 100644
--- a/media/bufferpool/aidl/android/hardware/media/bufferpool2/IClientManager.aidl
+++ b/media/bufferpool/aidl/android/hardware/media/bufferpool2/IClientManager.aidl
@@ -40,7 +40,8 @@
     /**
      * Sets up a buffer receiving communication node for the specified
      * buffer pool. A manager must create a IConnection to the buffer
-     * pool if it does not already have a connection.
+     * pool if it does not already have a connection. To transfer buffers
+     * using the interface, the sender must initiates transfer.
      *
      * @param bufferPool a buffer pool which is specified with the IAccessor.
      *     The specified buffer pool is the owner of received buffers.
@@ -52,4 +53,21 @@
      *     ResultStatus::CRITICAL_ERROR   - Other errors.
      */
     Registration registerSender(in IAccessor bufferPool);
+
+    /**
+     * Sets up a buffer receiving communication node for the specified
+     * buffer pool. A manager must create a IConnection to the buffer
+     * pool if it does not already have a connection. To transfer buffers
+     * using the interface, the receiver must initiates transfer(on demand).
+     *
+     * @param bufferPool a buffer pool which is specified with the IAccessor.
+     *     The specified buffer pool is the owner of received buffers.
+     * @return the Id of the communication node to the buffer pool.
+     *     This id is used in FMQ to notify IAccessor that a buffer has been
+     *     sent to that connection during transfers.
+     * @throws ServiceSpecificException with one of the following values:
+     *     ResultStatus::NO_MEMORY        - Memory allocation failure occurred.
+     *     ResultStatus::CRITICAL_ERROR   - Other errors.
+     */
+    Registration registerPassiveSender(in IAccessor bufferPool);
 }
diff --git a/media/bufferpool/aidl/default/ClientManager.cpp b/media/bufferpool/aidl/default/ClientManager.cpp
index de1db50..138790d 100644
--- a/media/bufferpool/aidl/default/ClientManager.cpp
+++ b/media/bufferpool/aidl/default/ClientManager.cpp
@@ -422,6 +422,14 @@
     return ::ndk::ScopedAStatus::ok();
 }
 
+::ndk::ScopedAStatus ClientManager::registerPassiveSender(
+        const std::shared_ptr<IAccessor>& in_bufferPool, Registration* _aidl_return) {
+    // TODO
+    (void) in_bufferPool;
+    (void) _aidl_return;
+    return ::ndk::ScopedAStatus::fromServiceSpecificError(ResultStatus::NOT_FOUND);
+}
+
 // Methods for local use.
 std::shared_ptr<ClientManager> ClientManager::sInstance;
 std::mutex ClientManager::sInstanceLock;
diff --git a/media/bufferpool/aidl/default/include/bufferpool2/ClientManager.h b/media/bufferpool/aidl/default/include/bufferpool2/ClientManager.h
index bff75ba..4b0916f 100644
--- a/media/bufferpool/aidl/default/include/bufferpool2/ClientManager.h
+++ b/media/bufferpool/aidl/default/include/bufferpool2/ClientManager.h
@@ -34,6 +34,11 @@
         ::aidl::android::hardware::media::bufferpool2::IClientManager::Registration* _aidl_return)
         override;
 
+    ::ndk::ScopedAStatus registerPassiveSender(
+        const std::shared_ptr<IAccessor>& in_bufferPool,
+        ::aidl::android::hardware::media::bufferpool2::IClientManager::Registration* _aidl_return)
+        override;
+
     /** Gets an instance. */
     static std::shared_ptr<ClientManager> getInstance();
 
diff --git a/media/c2/aidl/aidl_api/android.hardware.media.c2/current/android/hardware/media/c2/IComponent.aidl b/media/c2/aidl/aidl_api/android.hardware.media.c2/current/android/hardware/media/c2/IComponent.aidl
index 4439bc5..0a7e3c4 100644
--- a/media/c2/aidl/aidl_api/android.hardware.media.c2/current/android/hardware/media/c2/IComponent.aidl
+++ b/media/c2/aidl/aidl_api/android.hardware.media.c2/current/android/hardware/media/c2/IComponent.aidl
@@ -51,12 +51,18 @@
     long blockPoolId;
     android.hardware.media.c2.IConfigurable configurable;
   }
-  parcelable C2AidlGbAllocator {
-    android.hardware.media.c2.IGraphicBufferAllocator igba;
+  parcelable GbAllocator {
     ParcelFileDescriptor waitableFd;
+    android.hardware.media.c2.IGraphicBufferAllocator igba;
   }
-  union BlockPoolAllocator {
+  parcelable PooledGbAllocator {
+    ParcelFileDescriptor waitableFd;
+    long receiverId;
+    android.hardware.media.c2.IPooledGraphicBufferAllocator ipgba;
+  }
+  parcelable BlockPoolAllocator {
     int allocatorId;
-    android.hardware.media.c2.IComponent.C2AidlGbAllocator allocator;
+    @nullable android.hardware.media.c2.IComponent.GbAllocator gbAllocator;
+    @nullable android.hardware.media.c2.IComponent.PooledGbAllocator pooledGbAllocator;
   }
 }
diff --git a/media/c2/aidl/aidl_api/android.hardware.media.c2/current/android/hardware/media/c2/IPooledGraphicBufferAllocator.aidl b/media/c2/aidl/aidl_api/android.hardware.media.c2/current/android/hardware/media/c2/IPooledGraphicBufferAllocator.aidl
new file mode 100644
index 0000000..1a8c66d
--- /dev/null
+++ b/media/c2/aidl/aidl_api/android.hardware.media.c2/current/android/hardware/media/c2/IPooledGraphicBufferAllocator.aidl
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2024 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.media.c2;
+@VintfStability
+interface IPooledGraphicBufferAllocator {
+  android.hardware.media.c2.IPooledGraphicBufferAllocator.Allocation allocate(in android.hardware.media.c2.IPooledGraphicBufferAllocator.Description desc);
+  boolean deallocate(in int id);
+  parcelable Allocation {
+    int bufferId;
+    @nullable ParcelFileDescriptor fence;
+  }
+  parcelable Description {
+    int widthPixels;
+    int heightPixels;
+    int format;
+    long usage;
+  }
+}
diff --git a/media/c2/aidl/android/hardware/media/c2/IComponent.aidl b/media/c2/aidl/android/hardware/media/c2/IComponent.aidl
index 6bd30b4..6bcb5ff 100644
--- a/media/c2/aidl/android/hardware/media/c2/IComponent.aidl
+++ b/media/c2/aidl/android/hardware/media/c2/IComponent.aidl
@@ -23,6 +23,7 @@
 import android.hardware.media.c2.IInputSink;
 import android.hardware.media.c2.IInputSurface;
 import android.hardware.media.c2.IInputSurfaceConnection;
+import android.hardware.media.c2.IPooledGraphicBufferAllocator;
 import android.hardware.media.c2.WorkBundle;
 import android.os.ParcelFileDescriptor;
 
@@ -56,20 +57,36 @@
      * graphic blocks. the waitable fd is used to create a specific type of
      * C2Fence which can be used for waiting until to allocate is not blocked.
      */
-    parcelable C2AidlGbAllocator {
-        IGraphicBufferAllocator igba;
+    parcelable GbAllocator {
         ParcelFileDescriptor waitableFd;
+        IGraphicBufferAllocator igba;
     }
 
     /**
+     * C2AIDL allocator interface based on media.bufferpool2 along with a waitable fd.
+     *
+     * The interface is used from a specific type of C2BlockPool to allocate
+     * graphic blocks. the waitable fd is used to create a specific type of
+     * C2Fence which can be used for waiting until to allocate is not blocked.
+     * receiverId is id of receiver IConnection of media.bufferpool2.
+     */
+    parcelable PooledGbAllocator {
+        ParcelFileDescriptor waitableFd;
+        long receiverId;
+        IPooledGraphicBufferAllocator ipgba;
+    }
+
+
+    /**
      * Allocator for C2BlockPool.
      *
      * C2BlockPool will use a C2Allocator which is specified by an id.
-     * or C2AIDL allocator interface directly.
+     * Based on allocator id, allocator is specified.
      */
-    union BlockPoolAllocator {
+    parcelable BlockPoolAllocator {
         int allocatorId;
-        C2AidlGbAllocator allocator;
+        @nullable GbAllocator gbAllocator;
+        @nullable PooledGbAllocator pooledGbAllocator;
     }
 
     /**
diff --git a/media/c2/aidl/android/hardware/media/c2/IPooledGraphicBufferAllocator.aidl b/media/c2/aidl/android/hardware/media/c2/IPooledGraphicBufferAllocator.aidl
new file mode 100644
index 0000000..b599d52
--- /dev/null
+++ b/media/c2/aidl/android/hardware/media/c2/IPooledGraphicBufferAllocator.aidl
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2024 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.
+ */
+
+package android.hardware.media.c2;
+
+import android.os.ParcelFileDescriptor;
+
+/**
+ * Interface for decoder output buffer allocator for HAL process
+ *
+ * A graphic buffer for decoder output is allocated by the interface.
+ */
+@VintfStability
+interface IPooledGraphicBufferAllocator {
+    /**
+     * A graphic buffer allocation.
+     *
+     * bufferId is id of buffer from a media.bufferpool2. The buffer is
+     * android.hardware.HardwareBuffer.
+     * fence is provided in order to signal readiness of the buffer I/O inside
+     * underlying Graphics subsystem. This is called a sync fence throughout Android framework.
+     */
+    parcelable Allocation {
+        int bufferId;
+        @nullable ParcelFileDescriptor fence;
+    }
+
+    /**
+     * Parameters for a graphic buffer allocation.
+     *
+     * Refer to AHardwareBuffer_Desc(libnativewindow) for details.
+     */
+    parcelable Description {
+        int widthPixels;
+        int heightPixels;
+        int format; // AHardwareBuffer_Format
+        long usage; // AHardwareBuffer_UsageFlags
+    }
+
+    /**
+     * Allocate a graphic buffer.
+     * deallocate() must be called after the allocated buffer is no longer needed.
+     *
+     * @param desc Allocation parameters.
+     * @return an id of a buffer, the id is created from media.bufferpool2 in order for
+     *     caching and recycling,
+     *     If underlying allocator is blocked, c2::Status::Blocked will be returned.
+     *     Waitable fd must be obtained using the ndk object locally. The waitable fd must
+     *     be passed to the receiver during BlockPool creation request via AIDL.
+     * @throws ServiceSpecificException with one of the following values:
+     *   - `c2::Status::BAD_STATE` - The client is not in running states.
+     *   - `c2::Status::BLOCKED`   - Underlying graphics system is blocked.
+     *   - `c2::Status::CORRUPTED` - Some unknown error occurred.
+     */
+    Allocation allocate(in Description desc);
+
+    /**
+     * De-allocate a graphic buffer by graphic buffer's unique id.
+     *
+     * @param id buffer id.
+     * @return {@code true} when de-allocate happened, {@code false} otherwise.
+     */
+    boolean deallocate(in int id);
+}