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diff --git a/include/avsys-audio-shm.h b/include/avsys-audio-shm.h
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+/*
+ * avsystem
+ *
+ * Copyright (c) 2000 - 2011 Samsung Electronics Co., Ltd. All rights reserved.
+ *
+ * Contact: Jonghyuk Choi <jhchoi.choi@samsung.com>
+ *
+ * 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.
+ *
+ */
+
+#ifndef __AVSYS_AUDIO_SHM_H__
+#define __AVSYS_AUDIO_SHM_H__
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+typedef enum {
+ AVSYS_AUDIO_SHM_IDEN_HANDLE,
+ AVSYS_AUDIO_SHM_IDEN_PATH,
+ AVSYS_AUDIO_SHM_IDEN_LVOLUME,
+ AVSYS_AUDIO_SHM_IDEN_CNT
+} avsys_audio_shm_iden_t;
+
+int avsys_audio_create_shm(const avsys_audio_shm_iden_t iden);
+int avsys_audio_remove_shm(const avsys_audio_shm_iden_t iden);
+int avsys_audio_get_shm(const avsys_audio_shm_iden_t iden, void **ptr);
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif /* __AVSYS_AUDIO_SHM_H__ */