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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@37345 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Tilghman Lesher
2006-07-10 19:05:48 +00:00
parent 4a3e227291
commit 229ab7d9cf
11 changed files with 353 additions and 384 deletions
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135
tdd.c
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@@ -63,20 +63,28 @@ static float tddsb = 176.0; /* 45.5 baud */
static int tdd_decode_baudot(struct tdd_state *tdd,unsigned char data) /* covert baudot into ASCII */
{
static char ltrs[32]={'<','E','\n','A',' ','S','I','U',
'\n','D','R','J','N','F','C','K',
'T','Z','L','W','H','Y','P','Q',
'O','B','G','^','M','X','V','^'};
static char figs[32]={'<','3','\n','-',' ',',','8','7',
'\n','$','4','\'',',','<EFBFBD>',':','(',
'5','+',')','2','<EFBFBD>','6','0','1',
'9','7','<EFBFBD>','^','.','/','=','^'};
int d;
d=0; /* return 0 if not decodeable */
static char ltrs[32] = { '<','E','\n','A',' ','S','I','U',
'\n','D','R','J','N','F','C','K',
'T','Z','L','W','H','Y','P','Q',
'O','B','G','^','M','X','V','^' };
static char figs[32] = { '<','3','\n','-',' ',',','8','7',
'\n','$','4','\'',',','<EFBFBD>',':','(',
'5','+',')','2','<EFBFBD>','6','0','1',
'9','7','<EFBFBD>','^','.','/','=','^' };
int d = 0; /* return 0 if not decodeable */
switch (data) {
case 0x1f : tdd->modo=0; break;
case 0x1b : tdd->modo=1; break;
default: if (tdd->modo==0) d=ltrs[data]; else d=figs[data]; break;
case 0x1f:
tdd->modo = 0;
break;
case 0x1b:
tdd->modo = 1;
break;
default:
if (tdd->modo == 0)
d = ltrs[data];
else
d = figs[data];
break;
}
return d;
}
@@ -96,16 +104,16 @@ struct tdd_state *tdd_new(void)
tdd = malloc(sizeof(struct tdd_state));
if (tdd) {
memset(tdd, 0, sizeof(struct tdd_state));
tdd->fskd.spb = 176; /* 45.5 baud */
tdd->fskd.hdlc = 0; /* Async */
tdd->fskd.nbit = 5; /* 5 bits */
tdd->fskd.nstop = 1.5; /* 1.5 stop bits */
tdd->fskd.paridad = 0; /* No parity */
tdd->fskd.bw=0; /* Filter 75 Hz */
tdd->fskd.f_mark_idx = 0; /* 1400 Hz */
tdd->fskd.f_space_idx = 1; /* 1800 Hz */
tdd->fskd.pcola = 0; /* No clue */
tdd->fskd.cont = 0; /* Digital PLL reset */
tdd->fskd.spb = 176; /* 45.5 baud */
tdd->fskd.hdlc = 0; /* Async */
tdd->fskd.nbit = 5; /* 5 bits */
tdd->fskd.nstop = 1.5; /* 1.5 stop bits */
tdd->fskd.paridad = 0; /* No parity */
tdd->fskd.bw=0; /* Filter 75 Hz */
tdd->fskd.f_mark_idx = 0; /* 1400 Hz */
tdd->fskd.f_space_idx = 1; /* 1800 Hz */
tdd->fskd.pcola = 0; /* No clue */
tdd->fskd.cont = 0; /* Digital PLL reset */
tdd->fskd.x0 = 0.0;
tdd->fskd.state = 0;
tdd->pos = 0;
@@ -119,10 +127,8 @@ int ast_tdd_gen_ecdisa(unsigned char *outbuf, int len)
{
int pos = 0;
int cnt;
while(len) {
cnt = len;
if (cnt > sizeof(ecdisa))
cnt = sizeof(ecdisa);
while (len) {
cnt = len > sizeof(ecdisa) ? sizeof(ecdisa) : len;
memcpy(outbuf + pos, ecdisa, cnt);
pos += cnt;
len -= cnt;
@@ -146,14 +152,14 @@ int tdd_feed(struct tdd_state *tdd, unsigned char *ubuf, int len)
memset(buf, 0, 2 * len + tdd->oldlen);
memcpy(buf, tdd->oldstuff, tdd->oldlen);
mylen += tdd->oldlen/2;
for (x=0;x<len;x++)
buf[x+tdd->oldlen/2] = AST_MULAW(ubuf[x]);
for (x = 0; x < len; x++)
buf[x + tdd->oldlen / 2] = AST_MULAW(ubuf[x]);
c = res = 0;
while(mylen >= 1320) { /* has to have enough to work on */
while (mylen >= 1320) { /* has to have enough to work on */
olen = mylen;
res = fsk_serie(&tdd->fskd, buf, &mylen, &b);
if (mylen < 0) {
ast_log(LOG_ERROR, "fsk_serie made mylen < 0 (%d) (olen was %d)\n", mylen,olen);
ast_log(LOG_ERROR, "fsk_serie made mylen < 0 (%d) (olen was %d)\n", mylen, olen);
free(obuf);
return -1;
}
@@ -178,7 +184,7 @@ int tdd_feed(struct tdd_state *tdd, unsigned char *ubuf, int len)
} else
tdd->oldlen = 0;
free(obuf);
if (res) {
if (res) {
tdd->mode = 2; /* put it in mode where it
reliably puts teleprinter in correct shift mode */
return(c);
@@ -243,7 +249,7 @@ static inline float tdd_getcarrier(float *cr, float *ci, int bit)
int z; \
unsigned char b = (byte); \
PUT_TDD_BAUD(0); /* Start bit */ \
for (z=0;z<5;z++) { \
for (z = 0; z < 5; z++) { \
PUT_TDD_BAUD(b & 1); \
b >>= 1; \
} \
@@ -267,57 +273,48 @@ int tdd_generate(struct tdd_state *tdd, unsigned char *buf, const char *str)
#if 0
printf("%c",c); fflush(stdout);
#endif
if (c == 0) /* send null */
{
if (c == 0) { /* send null */
PUT_TDD(0);
continue;
}
if (c == '\r') /* send c/r */
{
}
if (c == '\r') { /* send c/r */
PUT_TDD(8);
continue;
}
if (c == '\n') /* send c/r and l/f */
{
}
if (c == '\n') { /* send c/r and l/f */
PUT_TDD(8);
PUT_TDD(2);
continue;
}
if (c == ' ') /* send space */
{
}
if (c == ' ') { /* send space */
PUT_TDD(4);
continue;
}
for(i = 0; i < 31; i++)
{
if (lstr[i] == c) break;
}
if (i < 31) /* if we found it */
{
if (tdd->mode) /* if in figs mode, change it */
{
}
for (i = 0; i < 31; i++) {
if (lstr[i] == c)
break;
}
if (i < 31) { /* if we found it */
if (tdd->mode) { /* if in figs mode, change it */
PUT_TDD(31); /* Send LTRS */
tdd->mode = 0;
}
}
PUT_TDD(i);
continue;
}
for(i = 0; i < 31; i++)
{
if (fstr[i] == c) break;
}
if (i < 31) /* if we found it */
{
if (tdd->mode != 1) /* if in ltrs mode, change it */
{
PUT_TDD(27); /* send FIGS */
}
for (i = 0; i < 31; i++) {
if (fstr[i] == c)
break;
}
if (i < 31) { /* if we found it */
if (tdd->mode != 1) { /* if in ltrs mode, change it */
PUT_TDD(27); /* send FIGS */
tdd->mode = 1;
}
PUT_TDD(i); /* send byte */
}
PUT_TDD(i); /* send byte */
continue;
}
}
}
}
return bytes;
}