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authorJason Parker <jparker@digium.com>2006-12-05 20:15:37 +0000
committerJason Parker <jparker@digium.com>2006-12-05 20:15:37 +0000
commit87f81679ee28efd8ca30a0462bc37741724918b8 (patch)
treeddee686c81ed490fcfdf3e78bd03050e650d2528 /main/fskmodem.c
parent33c09cbcfaf2b2062ee01053aabdcf26ed267fca (diff)
Expand on r48273 (from issue 8506), to translate more of the fskmodem stuff to English.
r48273 dealt with the comments and such, this deals with the code itself. (This couldn't have been easily done if it weren't for 48273 - thanks again for that merbanan) git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@48276 65c4cc65-6c06-0410-ace0-fbb531ad65f3
Diffstat (limited to 'main/fskmodem.c')
-rw-r--r--main/fskmodem.c34
1 files changed, 17 insertions, 17 deletions
diff --git a/main/fskmodem.c b/main/fskmodem.c
index aca562807..97a98801d 100644
--- a/main/fskmodem.c
+++ b/main/fskmodem.c
@@ -104,7 +104,7 @@ static double coef_out[NBW][8] = {
/*! Band-pass filter for MARK frequency */
-static inline float filtroM(fsk_data *fskd,float in)
+static inline float filterM(fsk_data *fskd,float in)
{
int i, j;
double s;
@@ -123,7 +123,7 @@ static inline float filtroM(fsk_data *fskd,float in)
}
/*! Band-pass filter for SPACE frequency */
-static inline float filtroS(fsk_data *fskd,float in)
+static inline float filterS(fsk_data *fskd,float in)
{
int i, j;
double s;
@@ -142,7 +142,7 @@ static inline float filtroS(fsk_data *fskd,float in)
}
/*! Low-pass filter for demodulated data */
-static inline float filtroL(fsk_data *fskd,float in)
+static inline float filterL(fsk_data *fskd,float in)
{
int i, j;
double s;
@@ -164,18 +164,18 @@ static inline float filtroL(fsk_data *fskd,float in)
return s;
}
-static inline int demodulador(fsk_data *fskd, float *retval, float x)
+static inline int demodulator(fsk_data *fskd, float *retval, float x)
{
float xS,xM;
fskd->cola_in[fskd->pcola] = x;
- xS = filtroS(fskd,x);
- xM = filtroM(fskd,x);
+ xS = filterS(fskd,x);
+ xM = filterM(fskd,x);
- fskd->cola_filtro[fskd->pcola] = xM-xS;
+ fskd->cola_filter[fskd->pcola] = xM-xS;
- x = filtroL(fskd,xM*xM - xS*xS);
+ x = filterL(fskd,xM*xM - xS*xS);
fskd->cola_demod[fskd->pcola++] = x;
fskd->pcola &= (NCOLA-1);
@@ -197,7 +197,7 @@ static int get_bit_raw(fsk_data *fskd, short *buffer, int *len)
spb2 = spb/2.;
for (f = 0;;) {
- if (demodulador(fskd, &x, GET_SAMPLE))
+ if (demodulator(fskd, &x, GET_SAMPLE))
return -1;
if ((x * fskd->x0) < 0) { /* Transition */
if (!f) {
@@ -219,7 +219,7 @@ static int get_bit_raw(fsk_data *fskd, short *buffer, int *len)
return f;
}
-int fsk_serie(fsk_data *fskd, short *buffer, int *len, int *outbyte)
+int fsk_serial(fsk_data *fskd, short *buffer, int *len, int *outbyte)
{
int a;
int i,j,n1,r;
@@ -242,9 +242,9 @@ int fsk_serie(fsk_data *fskd, short *buffer, int *len, int *outbyte)
just start sending a start bit with nothing preceding it at the beginning
of a transmission (what a LOSING design), we cant do it this elegantly */
/*
- if (demodulador(zap,&x1)) return(-1);
+ if (demodulator(zap,&x1)) return(-1);
for(;;) {
- if (demodulador(zap,&x2)) return(-1);
+ if (demodulator(zap,&x2)) return(-1);
if (x1>0 && x2<0) break;
x1 = x2;
}
@@ -253,7 +253,7 @@ int fsk_serie(fsk_data *fskd, short *buffer, int *len, int *outbyte)
beginning of a start bit in the TDD sceanario. It just looks for sufficient
level to maybe, perhaps, guess, maybe that its maybe the beginning of
a start bit, perhaps. This whole thing stinks! */
- if (demodulador(fskd, &fskd->x1, GET_SAMPLE))
+ if (demodulator(fskd, &fskd->x1, GET_SAMPLE))
return -1;
samples++;
for(;;) {
@@ -263,7 +263,7 @@ search_startbit2:
return 0;
}
samples++;
- if (demodulador(fskd, &fskd->x2, GET_SAMPLE))
+ if (demodulator(fskd, &fskd->x2, GET_SAMPLE))
return(-1);
#if 0
printf("x2 = %5.5f ", fskd->x2);
@@ -279,7 +279,7 @@ search_startbit3:
return 0;
}
for(;i;i--) {
- if (demodulador(fskd, &fskd->x1, GET_SAMPLE))
+ if (demodulator(fskd, &fskd->x1, GET_SAMPLE))
return(-1);
#if 0
printf("x1 = %5.5f ", fskd->x1);
@@ -320,7 +320,7 @@ getbyte:
a >>= j;
/* We read parity bit (if exists) and check parity */
- if (fskd->paridad) {
+ if (fskd->parity) {
olen = *len;
i = get_bit_raw(fskd, buffer, len);
buffer += (olen - *len);
@@ -328,7 +328,7 @@ getbyte:
return(-1);
if (i)
n1++;
- if (fskd->paridad == 1) { /* parity=1 (even) */
+ if (fskd->parity == 1) { /* parity=1 (even) */
if (n1&1)
a |= 0x100; /* error */
} else { /* parity=2 (odd) */