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diff --git a/xcore/swapped_buffer.h b/xcore/swapped_buffer.h
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+++ b/xcore/swapped_buffer.h
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+/*
+ * swapped_buffer.h - swapped buffer
+ *
+ *  Copyright (c) 2015 Intel Corporation
+ *
+ * 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.
+ *
+ * Author: Wind Yuan <feng.yuan@intel.com>
+ */
+
+#ifndef XCAM_SWAPPED_BUFFER_H
+#define XCAM_SWAPPED_BUFFER_H
+
+#include <xcam_std.h>
+#include <buffer_pool.h>
+
+namespace XCam {
+
+class SwappedBuffer
+    : public virtual BufferProxy
+{
+public:
+    enum SwapFlags {
+        SwapNone = 0,
+        SwapY    = 1,
+        SwapUV   = 2,
+    };
+
+    enum SwapOffsets {
+        SwapYOffset0 = 0,
+        SwapYOffset1 = 1,
+        SwapUVOffset0 = 2,
+        SwapUVOffset1 = 3,
+    };
+
+    enum InitOrder {
+        OrderYMask = 0x000F,
+        OrderY0Y1 = 0x0001,
+        OrderY1Y0 = 0x0002,
+        OrderUVMask = 0x0F00,
+        OrderUV0UV1 = 0x0100,
+        OrderUV1UV0 = 0x0200,
+    };
+
+protected:
+    explicit SwappedBuffer (
+        const VideoBufferInfo &info, const SmartPtr<BufferData> &data);
+
+public:
+    virtual ~SwappedBuffer ();
+    void set_swap_info (uint32_t flags, uint32_t* offsets);
+
+    SmartPtr<SwappedBuffer> swap_clone (
+        SmartPtr<SwappedBuffer> self, uint32_t flags);
+
+protected:
+    virtual SmartPtr<SwappedBuffer> create_new_swap_buffer (
+        const VideoBufferInfo &info, SmartPtr<BufferData> &data);
+
+    bool swap_new_buffer_info (
+        const VideoBufferInfo &in, uint32_t flags, VideoBufferInfo &out);
+
+private:
+    XCAM_DEAD_COPY (SwappedBuffer);
+
+protected:
+    uint32_t                   _swap_flags;
+    uint32_t                   _swap_offsets[XCAM_VIDEO_MAX_COMPONENTS * 2];
+};
+
+}
+
+#endif //XCAM_SWAPPED_BUFFER_H