amf_fir.h

ADI SHARC DSP 音频算法标准模块库

#ifndef _AMF_FIR_
#define _AMF_FIR_

// 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_FIR.h#3 $ 
// Part of : VisualAudio V2.5.0 
// Updated : $Date: 2006/10/12 $ by $Author: Fernando $




#include "AudioProcessing.h"

#ifdef __ECC__

// C declarations

typedef struct {
    
    AMF_Module b;
    
    // Parameters:
    int filterSize;
    float *coefs;
    
    // State:
    float pm *stateBuffer;    // length: filterSize+2 (to get around a problem between SIMD and circular buffers)
    float pm *statePtr;     // where the state delayline write ptr ended up after last tick

} AMF_FIR;

extern const AMF_ModuleClass AMFClassFIR;

#else


// ASM declarations for offsets from start of instance (must be kept in synch with C version)
#define AMF_FIR_FilterSize         AMF_Module_SIZE        // defined in AudioProcessing.h
#define AMF_FIR_Coefs             (AMF_Module_SIZE+1)
#define AMF_FIR_StateBuffer     (AMF_Module_SIZE+2)
#define AMF_FIR_StatePtr        (AMF_Module_SIZE+3)

#endif


#endif