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dddvb/lib/ddzap.c

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C
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#include <linux/dvb/frontend.h>
#include "src/libdddvb.h"
#include <stdio.h>
#include <string.h>
#include <getopt.h>
#include <stdint.h>
#include <unistd.h>
static uint32_t root2gold(uint32_t root)
{
uint32_t x, g;
for (g = 0, x = 1; g < 0x3ffff; g++) {
if (root == x)
return g;
x = (((x ^ (x >> 7)) & 1) << 17) | (x >> 1);
}
return 0xffffffff;
}
int main(int argc, char **argv)
{
struct dddvb *dd;
struct dddvb_fe *fe;
struct dddvb_params p;
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uint32_t bandwidth = 8000000, frequency = 0, symbol_rate = 0, pol = DDDVB_UNDEF;
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uint32_t id = DDDVB_UNDEF, pls = DDDVB_UNDEF, num = DDDVB_UNDEF;
enum fe_code_rate fec = FEC_AUTO;
enum fe_delivery_system delsys = ~0;
char *config = "config/";
while (1) {
int cur_optind = optind ? optind : 1;
int option_index = 0;
int c;
static struct option long_options[] = {
{"config", required_argument, 0, 'c'},
{"frequency", required_argument, 0, 'f'},
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{"bandwidth", required_argument, 0, 'b'},
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{"symbolrate", required_argument, 0, 's'},
{"delsys", required_argument, 0, 'd'},
{"id", required_argument, 0, 'i'},
{"pls", required_argument, 0, 'g'},
{"root", required_argument, 0, 'r'},
{"num", required_argument, 0, 'n'},
{"help", no_argument , 0, 'h'},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv,
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"c:i:f:s:d:p:hg:r:n:b:",
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long_options, &option_index);
if (c==-1)
break;
switch (c) {
case 'c':
config = strdup(optarg);
break;
case 'f':
frequency = strtoul(optarg, NULL, 0);
break;
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case 'b':
bandwidth = strtoul(optarg, NULL, 0);
break;
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case 's':
symbol_rate = strtoul(optarg, NULL, 0);
break;
case 'g':
pls = strtoul(optarg, NULL, 0);
break;
case 'r':
pls = root2gold(strtoul(optarg, NULL, 0));
break;
case 'i':
id = strtoul(optarg, NULL, 0);
break;
case 'n':
num = strtoul(optarg, NULL, 0);
break;
case 'd':
if (!strcmp(optarg, "C"))
delsys = SYS_DVBC_ANNEX_A;
if (!strcmp(optarg, "S"))
delsys = SYS_DVBS;
if (!strcmp(optarg, "S2"))
delsys = SYS_DVBS2;
if (!strcmp(optarg, "T"))
delsys = SYS_DVBT;
if (!strcmp(optarg, "T2"))
delsys = SYS_DVBT2;
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if (!strcmp(optarg, "J83B"))
delsys = SYS_DVBC_ANNEX_B;
if (!strcmp(optarg, "ISDBC"))
delsys = SYS_ISDBC;
if (!strcmp(optarg, "ISDBT"))
delsys = SYS_ISDBT;
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break;
case 'p':
if (!strcmp(optarg, "h"))
pol = 1;
if (!strcmp(optarg, "v"))
pol = 0;
break;
case 'h':
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printf("ddzap [-d delivery_system] [-p polarity] [-c config_dir] [-f frequency(Hz)]\n"
" [-b bandwidth(Hz)] [-s symbol_rate(Hz)]\n"
" [-g gold_code] [-r root_code] [-i id] [-n device_num]\n"
"\n"
" delivery_system = C,S,S2,T,T2,J83B,ISDBC,ISDBT\n"
" polarity = h,v\n"
" polarity = h,v\n"
"\n");
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exit(-1);
default:
break;
}
}
if (optind < argc) {
printf("Warning: unused arguments\n");
}
if (delsys == ~0) {
printf("You have to choose a delivery system: -d (C|S|S2|T|T2)\n");
exit(-1);
}
switch (delsys) {
case SYS_DVBC_ANNEX_A:
if (!symbol_rate)
symbol_rate = 6900000;
break;
}
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dd = dddvb_init(config, 0);//0xffff);
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if (!dd) {
printf("dddvb_init failed\n");
exit(-1);
}
printf("dvbnum = %u\n", dd->dvbfe_num);
if (num != DDDVB_UNDEF)
fe = dddvb_fe_alloc_num(dd, delsys, num);
else
fe = dddvb_fe_alloc(dd, delsys);
if (!fe) {
printf("dddvb_fe_alloc failed\n");
exit(-1);
}
dddvb_param_init(&p);
dddvb_set_frequency(&p, frequency);
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dddvb_set_bandwidth(&p, bandwidth);
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dddvb_set_symbol_rate(&p, symbol_rate);
dddvb_set_polarization(&p, pol);
dddvb_set_delsys(&p, delsys);
dddvb_set_id(&p, id);
dddvb_set_pls(&p, pls);
dddvb_dvb_tune(fe, &p);
while (1) {
fe_status_t stat;
int64_t str, cnr;
stat = dddvb_get_stat(fe);
str = dddvb_get_strength(fe);
cnr = dddvb_get_cnr(fe);
printf("stat=%02x, str=%lld.%03llddB, snr=%lld.%03llddB \n",
stat, str/1000, abs(str%1000), cnr/1000, abs(cnr%1000));
sleep(1);
}
}