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Rename some variables for clarity

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This commit is contained in:
Chris Robinson
2018-04-27 00:41:02 -07:00
parent 1e0728af64
commit 492c75cb7b
1 changed files with 29 additions and 31 deletions
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Alc/filters/nfc.c
+29 -31
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@@ -2,6 +2,7 @@
#include "config.h"
#include "nfc.h"
#include "alMain.h"
#include <string.h>
@@ -223,19 +224,18 @@ void NfcFilterAdjust(NfcFilter *nfc, const float w0)
void NfcFilterProcess1(NfcFilter *nfc, float *restrict dst, const float *restrict src, const int count)
{
const float b0 = nfc->first.coeffs[0];
const float a0 = nfc->first.coeffs[1];
const float gain = nfc->first.coeffs[0];
const float b1 = nfc->first.coeffs[1];
const float a1 = nfc->first.coeffs[2];
float z1 = nfc->first.history[0];
int i;
ASSUME(count > 0);
for(i = 0;i < count;i++)
{
float out = src[i] * b0;
float y;
y = out - (a1*z1);
out = y + (a0*z1);
float y = src[i]*gain - a1*z1;
float out = y + b1*z1;
z1 += y;
dst[i] = out;
@@ -245,22 +245,21 @@ void NfcFilterProcess1(NfcFilter *nfc, float *restrict dst, const float *restric
void NfcFilterProcess2(NfcFilter *nfc, float *restrict dst, const float *restrict src, const int count)
{
const float b0 = nfc->second.coeffs[0];
const float a00 = nfc->second.coeffs[1];
const float a01 = nfc->second.coeffs[2];
const float a10 = nfc->second.coeffs[3];
const float a11 = nfc->second.coeffs[4];
const float gain = nfc->second.coeffs[0];
const float b1 = nfc->second.coeffs[1];
const float b2 = nfc->second.coeffs[2];
const float a1 = nfc->second.coeffs[3];
const float a2 = nfc->second.coeffs[4];
float z1 = nfc->second.history[0];
float z2 = nfc->second.history[1];
int i;
ASSUME(count > 0);
for(i = 0;i < count;i++)
{
float out = src[i] * b0;
float y;
y = out - (a10*z1) - (a11*z2);
out = y + (a00*z1) + (a01*z2);
float y = src[i]*gain - a1*z1 - a2*z2;
float out = y + b1*z1 + b2*z2;
z2 += z1;
z1 += y;
@@ -272,30 +271,29 @@ void NfcFilterProcess2(NfcFilter *nfc, float *restrict dst, const float *restric
void NfcFilterProcess3(NfcFilter *nfc, float *restrict dst, const float *restrict src, const int count)
{
const float b0 = nfc->third.coeffs[0];
const float a00 = nfc->third.coeffs[1];
const float a01 = nfc->third.coeffs[2];
const float a02 = nfc->third.coeffs[3];
const float a10 = nfc->third.coeffs[4];
const float a11 = nfc->third.coeffs[5];
const float a12 = nfc->third.coeffs[6];
const float gain = nfc->third.coeffs[0];
const float b1 = nfc->third.coeffs[1];
const float b2 = nfc->third.coeffs[2];
const float b3 = nfc->third.coeffs[3];
const float a1 = nfc->third.coeffs[4];
const float a2 = nfc->third.coeffs[5];
const float a3 = nfc->third.coeffs[6];
float z1 = nfc->third.history[0];
float z2 = nfc->third.history[1];
float z3 = nfc->third.history[2];
int i;
ASSUME(count > 0);
for(i = 0;i < count;i++)
{
float out = src[i] * b0;
float y;
y = out - (a10*z1) - (a11*z2);
out = y + (a00*z1) + (a01*z2);
float y = src[i]*gain - a1*z1 - a2*z2;
float out = y + b1*z1 + b2*z2;
z2 += z1;
z1 += y;
y = out - (a12*z3);
out = y + (a02*z3);
y = out - a3*z3;
out = y + b3*z3;
z3 += y;
dst[i] = out;