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dmrconfig/util.c

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/*
* Auxiliary functions.
*
* Copyright (C) 2018 Serge Vakulenko, KK6ABQ
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <time.h>
#ifdef MINGW32
# include <windows.h>
#else
# include <sys/stat.h>
#endif
#include "util.h"
//
// CTCSS tones, Hz*10.
//
#define NCTCSS 50
static const int CTCSS_TONES [NCTCSS] = {
670, 693, 719, 744, 770, 797, 825, 854, 885, 915,
948, 974, 1000, 1035, 1072, 1109, 1148, 1188, 1230, 1273,
1318, 1365, 1413, 1462, 1514, 1567, 1598, 1622, 1655, 1679,
1713, 1738, 1773, 1799, 1835, 1862, 1899, 1928, 1966, 1995,
2035, 2065, 2107, 2181, 2257, 2291, 2336, 2418, 2503, 2541,
};
//
// DCS codes.
//
#define NDCS (104+1)
static const int DCS_CODES[NDCS] = {
23, 25, 26, 31, 32, 36, 43, 47, 51, 53,
54, 65, 71, 72, 73, 74, 114, 115, 116, 122,
125, 131, 132, 134, 143, 145, 152, 155, 156, 162,
165, 172, 174, 205, 212, 223, 225, 226, 243, 244,
245, 246, 251, 252, 255, 261, 263, 265, 266, 271,
274, 306, 311, 315, 325, 331, 332, 343, 346, 351,
356, 364, 365, 371, 411, 412, 413, 423, 431, 432,
445, 446, 452, 454, 455, 462, 464, 465, 466, 503,
506, 516, 523, 526, 532, 546, 565, 606, 612, 624,
627, 631, 632, 654, 662, 664, 703, 712, 723, 731,
732, 734, 743, 754,
17, // For RD-5R
};
//
// Check for a regular file.
//
int is_file(char *filename)
{
#ifdef MINGW32
// Treat COM* as a device.
return strncasecmp(filename, "com", 3) != 0;
#else
struct stat st;
if (stat(filename, &st) < 0) {
// File not exist: treat it as a regular file.
return 1;
}
return (st.st_mode & S_IFMT) == S_IFREG;
#endif
}
//
// Print data in hex format.
//
void print_hex(const unsigned char *data, int len)
{
int i;
printf("%02x", (unsigned char) data[0]);
for (i=1; i<len; i++)
printf("-%02x", (unsigned char) data[i]);
}
//
// Delay in milliseconds.
//
void mdelay(unsigned msec)
{
#ifdef MINGW32
Sleep(msec);
#else
usleep(msec * 1000);
#endif
}
//
// Round double value to integer.
//
static int iround(double x)
{
if (x >= 0)
return (int)(x + 0.5);
return -(int)(-x + 0.5);
}
//
// Get a binary value of the parameter: On/Off,
// Ignore case.
// For invlid value, print a message and halt.
//
int on_off(char *param, char *value)
{
if (strcasecmp("On", value) == 0)
return 1;
if (strcasecmp("Off", value) == 0)
return 0;
fprintf(stderr, "Bad value for %s: %s\n", param, value);
exit(-1);
}
//
// Get integer value, or "Off" as 0,
// Ignore case.
//
int atoi_off(const char *value)
{
if (strcasecmp("Off", value) == 0)
return 0;
return atoi(value);
}
//
// Copy a text string to memory image.
// Clear unused part with spaces.
//
void copy_str(unsigned char *dest, const char *src, int nbytes)
{
int i;
for (i=0; i<nbytes; i++) {
*dest++ = (*src ? *src++ : ' ');
}
}
//
// Find a string in a table of size nelem, ignoring case.
// Return -1 when not found.
//
int string_in_table(const char *value, const char *tab[], int nelem)
{
int i;
for (i=0; i<nelem; i++) {
if (strcasecmp(tab[i], value) == 0) {
return i;
}
}
return -1;
}
//
// Print description of the parameter.
//
void print_options(FILE *out, const char **tab, int num, const char *info)
{
int i;
fprintf(out, "\n");
if (info)
fprintf(out, "# %s\n", info);
fprintf(out, "# Options:");
for (i=0; i<num; i++) {
if (i > 0)
fprintf(out, ",");
fprintf(out, " %s", tab[i]);
}
fprintf(out, "\n");
}
//
// Write Unicode symbol to file.
// Convert to UTF-8 encoding:
// 00000000.0xxxxxxx -> 0xxxxxxx
// 00000xxx.xxyyyyyy -> 110xxxxx, 10yyyyyy
// xxxxyyyy.yyzzzzzz -> 1110xxxx, 10yyyyyy, 10zzzzzz
//
void putc_utf8(unsigned short ch, FILE *out)
{
if (ch < 0x80) {
putc (ch, out);
} else if (ch < 0x800) {
putc (ch >> 6 | 0xc0, out);
putc ((ch & 0x3f) | 0x80, out);
} else {
putc (ch >> 12 | 0xe0, out);
putc (((ch >> 6) & 0x3f) | 0x80, out);
putc ((ch & 0x3f) | 0x80, out);
}
}
//
// Print utf16 text as utf8.
// For short texts, replace space with underscore.
//
void print_unicode(FILE *out, const unsigned short *text, unsigned nchars, int fill_flag)
{
unsigned i, ch;
for (i=0; i<nchars && *text; i++) {
ch = *text++;
if (ch == '\t')
ch = ' ';
if (nchars <= 16 && ch == ' ')
ch = '_';
putc_utf8(ch, out);
}
if (fill_flag) {
for (; i<nchars; i++) {
putc(' ', out);
}
}
}
//
// Print ASCII text until 0xff.
// For short texts, replace space with underscore.
//
void print_ascii(FILE *out, const unsigned char *text, unsigned nchars, int fill_flag)
{
unsigned i, ch;
for (i=0; i<nchars && *text != 0xff && *text != 0; i++) {
ch = *text++;
if (ch == '\t')
ch = ' ';
if (fill_flag && ch == ' ')
ch = '_';
putc(ch, out);
}
if (fill_flag) {
for (; i<nchars; i++) {
putc(' ', out);
}
}
}
//
// Get local time in format: YYYYMMDDhhmmss
//
void get_timestamp(char p[16])
{
time_t now = time(NULL);
struct tm *local = localtime(&now);
if (! local) {
perror("localtime");
exit(-1);
}
if (!strftime(p, 16, "%Y%m%d%H%M%S", local)) {
perror("strftime");
exit(-1);
}
}
//
// Fetch Unicode symbol from UTF-8 string.
// Advance string pointer.
//
int utf8_to_unicode(const char **p)
{
int c1, c2, c3;
c1 = (unsigned char) *(*p)++;
if (! (c1 & 0x80))
return c1;
c2 = (unsigned char) *(*p)++;
if (! (c1 & 0x20))
return (c1 & 0x1f) << 6 | (c2 & 0x3f);
c3 = (unsigned char) *(*p)++;
return (c1 & 0x0f) << 12 | (c2 & 0x3f) << 6 | (c3 & 0x3f);
}
//
// Decode UTF-8 string into UCS-2 string, at most nsym characters.
// Replace underscore by space.
//
void utf8_decode(unsigned short *dst, const char *src, unsigned nsym)
{
if (src[0] == '-' && src[1] == 0)
src = "";
for (; nsym > 0; nsym--) {
int ch = utf8_to_unicode(&src);
if (ch == '_')
ch = ' ';
*dst++ = ch;
if (ch == 0) {
// Clear the remaining bytes.
while (--nsym > 0)
*dst++ = 0;
break;
}
}
}
//
// Copy ASCII string, at most nsym characters.
// Replace underscore by space.
// Fill the rest with 0xff.
//
void ascii_decode(unsigned char *dst, const char *src, unsigned nsym)
{
if (src[0] == '-' && src[1] == 0)
src = "";
for (; nsym > 0; nsym--) {
int ch = *src++;
if (ch == 0) {
// Clear the remaining bytes.
while (nsym-- > 0)
*dst++ = 0xff;
break;
}
if (ch == '_')
ch = ' ';
*dst++ = ch;
}
}
//
// Convert tone string to BCD format.
// Four possible formats:
// nnn.n - CTCSS frequency
// DnnnN - DCS normal
// DnnnI - DCS inverted
// '-' - Disabled
//
int encode_tone(char *str)
{
unsigned val, tag, a, b, c, d;
if (*str == '-') {
// Disabled
return 0xffff;
} else if (*str == 'D' || *str == 'd') {
//
// DCS tone
//
char *e;
val = strtoul(++str, &e, 10);
// Find a valid index in DCS table.
int i;
for (i=0; i<NDCS; i++)
if (DCS_CODES[i] == val)
break;
if (i >= NDCS) {
return -1;
}
a = 0;
b = val / 100;
c = val / 10 % 10;
d = val % 10;
if (*e == 'N' || *e == 'n') {
tag = 2;
} else if (*e == 'I' || *e == 'i') {
tag = 3;
} else {
return -1;
}
} else if (*str >= '0' && *str <= '9') {
//
// CTCSS tone
//
float hz;
if (sscanf(str, "%f", &hz) != 1)
return -1;
// Round to integer.
val = hz * 10.0 + 0.5;
// Find a valid index in CTCSS table.
int i;
for (i=0; i<NCTCSS; i++)
if (CTCSS_TONES[i] == val)
break;
if (i >= NCTCSS)
return -1;
a = val / 1000;
b = val / 100 % 10;
c = val / 10 % 10;
d = val % 10;
tag = 0;
} else {
return -1;
}
return (a << 12) | (b << 8) | (c << 4) | d | (tag << 14);
}
//
// Print frequency (BCD value).
//
void print_freq(FILE *out, unsigned data)
{
fprintf(out, "%d%d%d.%d%d%d", (data >> 28) & 15, (data >> 24) & 15,
(data >> 20) & 15, (data >> 16) & 15,
(data >> 12) & 15, (data >> 8) & 15);
if ((data & 0xff) == 0) {
fputs(" ", out);
} else {
fprintf(out, "%d", (data >> 4) & 15);
if ((data & 0x0f) == 0) {
fputs(" ", out);
} else {
fprintf(out, "%d", data & 15);
}
}
}
//
// Convert frequency in MHz from floating point to
// a binary coded decimal format (8 digits).
//
unsigned mhz_to_bcd(double mhz)
{
unsigned hz = iround(mhz * 1000000.0);
return ((hz / 100000000) % 10) << 28 |
((hz / 10000000) % 10) << 24 |
((hz / 1000000) % 10) << 20 |
((hz / 100000) % 10) << 16 |
((hz / 10000) % 10) << 12 |
((hz / 1000) % 10) << 8 |
((hz / 100) % 10) << 4 |
((hz / 10) % 10);
}
//
// Convert a 4-byte frequency value from binary coded decimal
// to integer format (in Hertz).
//
int freq_to_hz(unsigned bcd)
{
int a = (bcd >> 28) & 15;
int b = (bcd >> 24) & 15;
int c = (bcd >> 20) & 15;
int d = (bcd >> 16) & 15;
int e = (bcd >> 12) & 15;
int f = (bcd >> 8) & 15;
int g = (bcd >> 4) & 15;
int h = bcd & 15;
return (((((((a*10 + b) * 10 + c) * 10 + d) * 10 + e) * 10 + f) * 10 + g) * 10 + h) * 10;
}
//
// Print frequency as MHz.
//
void print_mhz(FILE *out, unsigned hz)
{
if (hz % 1000000 == 0)
fprintf(out, "%-8u", hz / 1000000);
else if (hz % 100000 == 0)
fprintf(out, "%-8.1f", hz / 1000000.0);
else if (hz % 10000 == 0)
fprintf(out, "%-8.2f", hz / 1000000.0);
else if (hz % 1000 == 0)
fprintf(out, "%-8.3f", hz / 1000000.0);
else if (hz % 100 == 0)
fprintf(out, "%-8.4f", hz / 1000000.0);
else
fprintf(out, "%-8.5f", hz / 1000000.0);
}
//
// Print the transmit offset or frequency.
//
void print_offset(FILE *out, unsigned rx_bcd, unsigned tx_bcd)
{
int rx_hz = freq_to_hz(rx_bcd);
int tx_hz = freq_to_hz(tx_bcd);
int delta = tx_hz - rx_hz;
if (delta == 0) {
fprintf(out, "+0 ");
} else if (delta > 0 && delta/50000 <= 255) {
fprintf(out, "+");
print_mhz(out, delta);
} else if (delta < 0 && -delta/50000 <= 255) {
fprintf(out, "-");
print_mhz(out, -delta);
} else {
fprintf(out, " ");
print_mhz(out, tx_hz);
}
}
//
// Compare channel index for qsort().
//
int compare_index(const void *pa, const void *pb)
{
unsigned short a = *(unsigned short*) pa;
unsigned short b = *(unsigned short*) pb;
if (a == 0)
return (b != 0);
if (b == 0)
return -1;
if (a < b)
return -1;
if (a > b)
return 1;
return 0;
}
//
// Print CTSS or DCS tone.
//
void print_tone(FILE *out, unsigned data)
{
if (data == 0xffff) {
fprintf(out, "- ");
return;
}
unsigned tag = data >> 14;
unsigned a = (data >> 12) & 3;
unsigned b = (data >> 8) & 15;
unsigned c = (data >> 4) & 15;
unsigned d = data & 15;
switch (tag) {
default:
// CTCSS
if (a == 0)
fprintf(out, "%d%d.%d ", b, c, d);
else
fprintf(out, "%d%d%d.%d", a, b, c, d);
break;
case 2:
// DCS-N
fprintf(out, "D%d%d%dN", b, c, d);
break;
case 3:
// DCS-I
fprintf(out, "D%d%d%dI", b, c, d);
break;
}
}
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