add libdddvb

2025-12-27 07:31:08 +01:00 · 2018-09-17 13:45:26 +02:00
parent 010cdf1ce8
commit 0d8987862f
18 changed files with 2168 additions and 17 deletions
--- a/lib/ddzap.c
+++ b/lib/ddzap.c
@@ -0,0 +1,152 @@
+#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;
+	uint32_t frequency = 0, symbol_rate = 0, pol = DDDVB_UNDEF;
+	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'},
+			{"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, 
+				"c:i:f:s:d:p:hg:r:n:",
+				long_options, &option_index);
+		if (c==-1)
+ 			break;
+		
+		switch (c) {
+		case 'c':
+			config = strdup(optarg);
+			break;
+		case 'f':
+			frequency = strtoul(optarg, NULL, 0);
+			break;
+		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;
+			break;
+		case 'p':
+			if (!strcmp(optarg, "h"))
+				pol = 1;
+			if (!strcmp(optarg, "v"))
+				pol = 0;
+			break;
+		case 'h':
+			printf("no help yet\n");
+			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;
+	}
+
+	dd = dddvb_init(config, 0xffff);
+	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);
+	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);
+	}
+}