amf_agclimitercore.h

ADI SHARC DSP 音频算法标准模块库

#ifndef _AMF_AGCLIMITERCORE_
#define _AMF_AGCLIMITERCORE_

// Copyright(c) 2005 Analog Devices, Inc. All Rights Reserved.
// This software is proprietary and confidential to Analog Devices, Inc. and its licensors.

// File    : $Id: //depot/development/visualaudio/modules/2.5.0/SHARC/Include/AMF_AGCLimiterCore.h#3 $ 
// Part of : VisualAudio V2.5.0 
// Updated : $Date: 2006/10/12 $ by $Author: Fernando $




#include "AudioProcessing.h"

#ifdef __ECC__

#include "VA_GeneralHelperFunctions.h"

typedef struct {
    
    AMF_Module b;
    
    // Parameters:
    float threshold, gain, slope, kneeDepth, sharpnessFactor;
    float attackCoef, decayCoef;
     
    // State:
    float envState;
    
} AMF_AGCLimiterCore;

extern const AMF_ModuleClass AMFClassAGCLimiterCore;

float AMF_AGCLimiterCore_TranslateEnvFollowerT60(float T60Milliseconds, float samplingRate);

float AMF_AGCLimiterCore_TranslateSlope(float ratio);

float AMF_AGCLimiterCore_TranslateSharpnessFactor(float kneeDepth);

#else

// ASM declarations for offsets from start of instance (must be kept in synch with C version)
#define AMF_AGCLimiterCore_Threshold             AMF_Module_SIZE  // defined in AudioProcessing.h
#define AMF_AGCLimiterCore_Gain                 (AMF_Module_SIZE+1)
#define AMF_AGCLimiterCore_Slope                (AMF_Module_SIZE+2)
#define AMF_AGCLimiterCore_KneeDepth            (AMF_Module_SIZE+3)
#define AMF_AGCLimiterCore_SharpnessFactor        (AMF_Module_SIZE+4)
#define AMF_AGCLimiterCore_AttackCoef            (AMF_Module_SIZE+5)
#define AMF_AGCLimiterCore_DecayCoef            (AMF_Module_SIZE+6)
#define AMF_AGCLimiterCore_EnvState                (AMF_Module_SIZE+7)

#endif


#endif