amf_agcnmultiplier_s.c

ADI SHARC DSP 音频算法标准模块库

// 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/Source/AMF_AGCNMultiplier_S.c#3 $ 
// Part of : VisualAudio V2.5.0 
// Updated : $Date: 2006/10/12 $ by $Author: Fernando $



#include "AMF_AGCNMultiplier_S.h"

void AMF_AGCNMultiplier_S_Render(AMF_AGCNMultiplier_S * restrict instance,float * restrict * buffers,int tickSize);
void AMF_AGCNMultiplier_S_Bypass(AMF_AGCNMultiplier_S * restrict instance,float * restrict * buffers,int tickSize);

// NOTE: The C version of this function is for reference only (it is
//       intended just to show the general algorithm that the module
//       uses), and it may not have been fully tested
#if 0
#pragma optimize_for_speed
SEG_MOD_FAST_CODE  void AMF_AGCNMultiplier_S_Render(AMF_AGCNMultiplier_S * restrict instance,float * restrict * buffers,int tickSize) {
    int numInputs = instance->b.inputPinCount;
    int i,j,k;
    float *inMul = buffers[0];
    float *stereoIn;
    float *out;
    for (k=1; k<numInputs; k++) {
        stereoIn = buffers[k];
        out = buffers[k + numInputs - 1];
        for (i=0,j=0; i<tickSize; i++,j+=2) {
            out[j] = inMul[i] * stereoIn[j];
            out[j+1] = inMul[i] * stereoIn[j+1];
        }
    }
}
#endif

// custom bypass
// copies inputs to outputs, without multiplying
#pragma optimize_for_speed
SEG_MOD_FAST_CODE  void AMF_AGCNMultiplier_S_Bypass(AMF_AGCNMultiplier_S * restrict instance,float * restrict * buffers,int tickSize) {
    int numInputs = instance->b.inputPinCount;
    int i,j,k;
    float *stereoIn;
    float *out;
    for (k=1; k<numInputs; k++) {
        stereoIn = buffers[k];
        out = buffers[k + numInputs - 1];
        for (i=0,j=0; i<tickSize; i++,j+=2) {
            out[j] = stereoIn[j];
            out[j+1] = stereoIn[j+1];
        }
    }
}

SEG_MOD_SLOW_CONST const AMF_ModuleVariableClass AMFClassAGCNMultiplier_S = 
{
    
    /* Flags */
    AMFModuleClassFlag_VARIABLE_PIN_COUNT,
     
    /* Render function */
    (AMF_RenderFunction) AMF_AGCNMultiplier_S_Render, 
    
    /* Default bypass */
    (AMF_RenderFunction) AMF_AGCNMultiplier_S_Bypass
       
};