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diff --git a/media/libeffects/lvm/lib/StereoWidening/src/LVCS_BypassMix.h b/media/libeffects/lvm/lib/StereoWidening/src/LVCS_BypassMix.h
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+/*
+ * Copyright (C) 2004-2010 NXP Software
+ * Copyright (C) 2010 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.
+ */
+
+/************************************************************************************
+
+ $Author: beq07716 $
+ $Revision: 1001 $
+ $Date: 2010-06-28 13:23:02 +0200 (Mon, 28 Jun 2010) $
+
+*************************************************************************************/
+
+#ifndef __LVCS_BYPASSMIX_H__
+#define __LVCS_BYPASSMIX_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+
+/************************************************************************************/
+/* */
+/* Includes */
+/* */
+/************************************************************************************/
+
+#include "LVC_Mixer.h"
+
+
+/************************************************************************************/
+/* */
+/* Structures */
+/* */
+/************************************************************************************/
+
+/* Bypass mixer structure */
+typedef struct
+{
+ /* Mixer settings */
+ LVMixer3_2St_st Mixer_Instance; /* Mixer instance */
+ LVM_UINT16 Output_Shift; /* Correcting gain output shift */
+
+} LVCS_BypassMix_t;
+
+
+/* Output gain type */
+typedef struct
+{
+ /* Output gain settings, Gain = (Loss/32768) * 2^Shift */
+ LVM_UINT16 Shift; /* Left shifts required */
+ LVM_UINT16 Loss; /* Loss required */
+ LVM_UINT16 UnprocLoss; /* Unprocessed path loss */
+} Gain_t;
+
+
+/************************************************************************************/
+/* */
+/* Function prototypes */
+/* */
+/************************************************************************************/
+
+LVCS_ReturnStatus_en LVCS_BypassMixInit(LVCS_Handle_t hInstance,
+ LVCS_Params_t *pParams);
+
+
+LVCS_ReturnStatus_en LVCS_BypassMixer(LVCS_Handle_t hInstance,
+ const LVM_INT16 *pProcessed,
+ const LVM_INT16 *unProcessed,
+ LVM_INT16 *pOutData,
+ LVM_UINT16 NumSamples);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* BYPASSMIX_H */