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



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

void AMF_TestGenImpulseTrain_Render(AMF_TestGenImpulseTrain * restrict instance,float * restrict * buffers,int tickSize);

SEG_MOD_FAST_CODE  void AMF_TestGenImpulseTrain_Render(AMF_TestGenImpulseTrain * restrict instance,float * restrict * buffers,int tickSize) {
    int i;
    float *out = buffers[0];
    float phaseinc, phase;

    phase = instance->phase;
    phaseinc = instance->phaseInc;
    
    for (i=0; i<tickSize; i++) {
        phase += phaseinc;
        if (phase > 1.0) {
            out[i] = 1.0;
            phase -= 1.0;
        } else if (phase < 0.0) {
            out[i] = 1.0;
            phase += 1.0;
        } else out[i]=0.0;
    }
    instance->phase = phase;
}

SEG_MOD_SLOW_CONST const AMF_ModuleClass AMFClassTestGenImpulseTrain = {
    
    /* Flags */
    0,
     
    /* Render function */
    (AMF_RenderFunction)AMF_TestGenImpulseTrain_Render,

    /* Default bypass */
    (void *)0,
    
    /* Input descriptor - no inputs. */
    0, 0,

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