amf_biquadcascade64_s.h

来自「ADI SHARC DSP 音频算法标准模块库」· C头文件 代码 · 共 48 行

// Copyright(c) 2003 Analog Devices, Inc. All Rights Reserved. ADI Confidential.

#include "AudioProcessing.h"

#ifdef __ECC__

// C declarations

typedef struct {
    AMF_Module b;
    
    // Parameters:
    int numSections; 
    int pm *coefs;
    /*
    coef layout:
    etc...
    filter1 n0    (non-delayed numerator coef)
     filter1 n1    (1st-delayed numerator coef)
     filter1 n2    (2nd-delayed numerator coef)
     filter1 d1    (1st-delayed denominator coef, negated)
     filter1 d2    (2nd-delayed denominator coef, negated)
    filter2 n0    (non-delayed numerator coef)
     filter2 n1    (1st-delayed numerator coef)
     filter2 n2    (2nd-delayed numerator coef)
     filter2 d1    (1st-delayed denominator coef, negated)
     filter2 d2    (2nd-delayed denominator coef, negated)
    etc...
    */
    
    // State:
    float *state1; // input delays
    float *state2; // output delays
} AMF_BiquadCascade64_S;

extern const AMF_ModuleClass AMFClassBiquadCascade64_S;

#else

// ASM declarations for offsets from start of instance (must be kept in synch with C version)
#define AMF_BiquadCascade64_S_NumSections    AMF_Module_SIZE  // defined in AMFModules.h
#define AMF_BiquadCascade64_S_Coefs     (AMF_Module_SIZE+1)  // defined in AMFModules.h
#define AMF_BiquadCascade64_S_State1     (AMF_Module_SIZE+2)
#define AMF_BiquadCascade64_S_State2     (AMF_Module_SIZE+3)

#endif