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


#include "AMF_ScalerN.h"
#include "AMF_Scaler.h"
#include <stdlib.h>



void AMF_ScalerN_Render(AMF_ScalerN * 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

SEG_MOD_FAST_CODE void
AMF_ScalerN_Render (AMF_ScalerN * restrict instance, float * restrict * buffers, int tickSize)
{
  // Function code for the N channel audio scaler.  //
  // This utilizes the optimized render function AMF_Scaler_Render()
  AMF_Scaler S = { AMF_Module_NULL_INIT };
  int numChannels;
  int channel;
  float *ptrs[2];
  float amp;

  numChannels = instance->b.inputPinCount;
  
  for (channel = 0; channel < numChannels; channel++)
  {
	// Setup the data structure for the underlying AMF_Scaler object
    S.amp = instance->amp[channel];
	// Input buffer
	ptrs[0] = buffers[channel];
	// Output buffer
	ptrs[1] = buffers[numChannels + channel];

	AMF_Scaler_Render (&S, ptrs, tickSize);
  }

}

SEG_MOD_SLOW_CONST const AMF_ModuleClass AMFClassScalerN = {
    
    /* Flags */
    0,
     
    /* Render function */
    (AMF_RenderFunction)AMF_ScalerN_Render,  // render function 
    
    /* Default bypass */
    (void *)0,
    
    /* Input descriptor - 1 input, and it is mono. */
    1, 0,

    /* Output descriptor - 1 output, and it is mono. */
    1, 0,
};