amf_agcrmsn.c

ADI SHARC DSP 音频算法标准模块库

// Copyright(c) 2006 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/Packs/ControlRatePack/2.5.0/SHARC/Source/AMF_AGCRmsN.c#2 $ 
// Part of : VisualAudio V2.5.0 
// Updated : $Date: 2007/07/02 $ by $Author: Kishore $

// Automatically generated VisualAudio render function AMF_AGCRmsN_Render

#include <math.h>
#include "AMF_AGCRmsN.h"


#if 0

void AMF_AGCRmsN_Render(AMF_AGCRmsN * restrict instance, float * restrict * buffers, int tickSize)
{
  
  int numIn;
  int channel;
  int sample;
  float *in, *out;
  float recipN = instance->recipN;  // 1/N
  
  numIn = 2;

   out = buffers[numIn];

	/*************************************
	* Calculate RMS sample-by-sample for
	* N inputs
   	**************************************/

	for (sample = 0; sample < tickSize; sample++)
    {
    
    	out[sample] = 0.0;  
    }

	for (channel = 0; channel < numIn; channel++)
    {
		
		in = buffers[channel]; 

		/*************************************
		* Calculate enery sample-by-sample for 
		* N inputs
   		**************************************/
	  for (sample = 0; sample < tickSize; sample++)
        {
			
          out[sample]  += in[sample] * in[sample];
        }
					
    }  
    for (sample = 0; sample < tickSize; sample++)
    {
    
    	out[sample] = sqrtf (out[sample]*recipN );  
    	
    }
   
  
}
#endif


SEG_MOD_SLOW_CONST const AMF_ModuleVariableClass AMFClassAGCRmsN = {

  /* Flags */
  AMFModuleClassFlag_VARIABLE_PIN_COUNT ,

  /* Render function */
  (AMF_RenderFunction) AMF_AGCRmsN_Render,

  /* Bypass function */
  (AMF_RenderFunction) 0

};