xref: /frameworks/av/media/libeffects/lvm/lib/Common/lib/Mixer.h

/*
 * 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.
 */

#ifndef __MIXER_H__
#define __MIXER_H__


#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */


#include "LVM_Types.h"

/**********************************************************************************
   INSTANCE MEMORY TYPE DEFINITION
***********************************************************************************/

typedef struct
{
    LVM_INT32   Alpha;                    /* Time constant. Set by calling application.  Can be changed at any time */
    LVM_INT32   Target;                   /* Target value.  Set by calling application.  Can be changed at any time */
    LVM_INT32   Current;                  /* Current value.  Set by the mixer function. */
    LVM_INT16   CallbackSet;              /* Boolean.  Should be set by calling application each time the target value is updated */
    LVM_INT16   CallbackParam;            /* Parameter that will be used in the calback function */
    void        *pCallbackHandle;         /* Pointer to the instance of the callback function */
    void        *pGeneralPurpose;         /* Pointer for general purpose usage */
    LVM_Callback pCallBack;               /* Pointer to the callback function */
} Mix_1St_Cll_t;

typedef struct
{
    LVM_INT32   Alpha1;
    LVM_INT32   Target1;
    LVM_INT32   Current1;
    LVM_INT16   CallbackSet1;
    LVM_INT16   CallbackParam1;
    void        *pCallbackHandle1;
    void        *pGeneralPurpose1;
    LVM_Callback pCallBack1;

    LVM_INT32   Alpha2;                   /* Warning the address of this location is passed as a pointer to Mix_1St_Cll_t in some functions */
    LVM_INT32   Target2;
    LVM_INT32   Current2;
    LVM_INT16   CallbackSet2;
    LVM_INT16   CallbackParam2;
    void        *pCallbackHandle2;
    void        *pGeneralPurpose2;
    LVM_Callback pCallBack2;

} Mix_2St_Cll_t;


/*** General functions ************************************************************/

LVM_UINT32 LVM_Mixer_TimeConstant(LVM_UINT32   tc,
                                  LVM_UINT16   Fs,
                                  LVM_UINT16   NumChannels);


void MixSoft_1St_D32C31_WRA(    Mix_1St_Cll_t       *pInstance,
                                const LVM_INT32     *src,
                                      LVM_INT32     *dst,
                                      LVM_INT16     n);

void MixSoft_2St_D32C31_SAT(    Mix_2St_Cll_t       *pInstance,
                                const LVM_INT32     *src1,
                                const LVM_INT32     *src2,
                                      LVM_INT32     *dst,
                                      LVM_INT16     n);

void MixInSoft_D32C31_SAT(      Mix_1St_Cll_t       *pInstance,
                                const LVM_INT32     *src,
                                      LVM_INT32     *dst,
                                      LVM_INT16     n);

/**********************************************************************************
   FUNCTION PROTOTYPES (LOW LEVEL SUBFUNCTIONS)
***********************************************************************************/

void Core_MixSoft_1St_D32C31_WRA(   Mix_1St_Cll_t       *pInstance,
                                    const LVM_INT32     *src,
                                          LVM_INT32     *dst,
                                          LVM_INT16     n);

void Core_MixHard_2St_D32C31_SAT(   Mix_2St_Cll_t       *pInstance,
                                    const LVM_INT32     *src1,
                                    const LVM_INT32     *src2,
                                          LVM_INT32     *dst,
                                          LVM_INT16     n);

void Core_MixInSoft_D32C31_SAT(     Mix_1St_Cll_t       *pInstance,
                                    const LVM_INT32     *src,
                                          LVM_INT32     *dst,
                                          LVM_INT16     n);
#ifdef __cplusplus
}
#endif /* __cplusplus */


/**********************************************************************************/

#endif /* __MIXER_H__ */