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-rw-r--r--etisnoop.cpp154
1 files changed, 153 insertions, 1 deletions
diff --git a/etisnoop.cpp b/etisnoop.cpp
index 3876a78..19d4c3a 100644
--- a/etisnoop.cpp
+++ b/etisnoop.cpp
@@ -1,6 +1,7 @@
/*
Copyright (C) 2014 CSP Innovazione nelle ICT s.c.a r.l. (http://www.csp.it/)
Copyright (C) 2014 Matthias P. Braendli (http://www.opendigitalradio.org)
+ Copyright (C) 2015 Data Path
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@@ -21,6 +22,9 @@
Authors:
Sergio Sagliocco <sergio.sagliocco@csp.it>
Matthias P. Braendli <matthias@mpb.li>
+ / | |- ')|) |-|_ _ (|,_ .| _ ,_ \
+ Data Path \(|(||_(|/_| (||_||(a)_||||(|||.(_()|||/
+
*/
@@ -1701,6 +1705,154 @@ void decodeFIG(FIGalyser &figs,
}
}
break;
+ case 11: // FIG 0/11 Region definition
+ { // ETSI EN 300 401 8.1.16.1
+ Lat_Lng gps_pos = {0, 0};
+ signed short Latitude_coarse, Longitude_coarse;
+ unsigned short Region_Id, Extent_Latitude, Extent_Longitude, key;
+ unsigned char i = 1, j, k, GATy, Rfu, Length_TII_list, Rfa, MainId, Length_SubId_list, SubId;
+ signed char bit_pos;
+ char tmpbuf[256];
+ bool GE_flag;
+
+ while (i < (figlen - 1)) {
+ // iterate over Region definition
+ GATy = f[i] >> 4;
+ GE_flag = (f[i] >> 3) & 0x01;
+ Region_Id = ((unsigned short)(f[i] & 0x07) << 8) | ((unsigned short)f[i+1]);
+ key = ((unsigned short)oe << 12) | ((unsigned short)pd << 11) | Region_Id;
+ i += 2;
+ if (GATy == 0) {
+ // TII list
+ sprintf(desc, "GATy=%d Geographical area defined by a TII list, G/E flag=%d %s coverage area, RegionId=0x%X, database key=0x%X",
+ GATy, GE_flag, GE_flag?"Global":"Ensemble", Region_Id, key);
+ if (i < figlen) {
+ Rfu = f[i] >> 5;
+ if (Rfu != 0) {
+ sprintf(tmpbuf, ", Rfu=%d invalid value", Rfu);
+ strcat(desc, tmpbuf);
+ }
+ Length_TII_list = f[i] & 0x1F;
+ sprintf(tmpbuf, ", Length of TII list=%d", Length_TII_list);
+ strcat(desc, tmpbuf);
+ if (Length_TII_list == 0) {
+ strcat(desc, ", CEI");
+ }
+ printbuf(desc, indent+1, NULL, 0);
+ i++;
+
+ for(j = 0;(i < (figlen - 1)) && (j < Length_TII_list); j++) {
+ // iterate over Transmitter group
+ Rfa = f[i] >> 7;
+ MainId = f[i] & 0x7F;
+ if (Rfa != 0) {
+ sprintf(desc, "Rfa=%d invalid value, MainId=0x%X",
+ Rfa, MainId);
+ }
+ else {
+ sprintf(desc, "MainId=0x%X", MainId);
+ }
+ // check MainId value
+ if ((Mode_Identity == 1) || (Mode_Identity == 2) || (Mode_Identity == 4)) {
+ if (MainId > 69) {
+ // The coding range shall be 0 to 69 for transmission modes I, II and IV
+ sprintf(tmpbuf, " invalid value for transmission mode %d", Mode_Identity);
+ strcat(desc, tmpbuf);
+ }
+ }
+ else if (Mode_Identity == 3) {
+ if (MainId > 5) {
+ // The coding range shall be 0 to 5 for transmission modes I, II and IV
+ sprintf(tmpbuf, " invalid value for transmission mode %d", Mode_Identity);
+ strcat(desc, tmpbuf);
+ }
+ }
+ Rfa = f[i+1] >> 5;
+ if (Rfa != 0) {
+ sprintf(tmpbuf, ", Rfa=%d invalid value", Rfa);
+ strcat(desc, tmpbuf);
+ }
+ Length_SubId_list = f[i+1] & 0x1F;
+ sprintf(tmpbuf, ", Length of SubId=%d", Length_SubId_list);
+ strcat(desc, tmpbuf);
+ printbuf(desc, indent+2, NULL, 0);
+ i += 2;
+
+ bit_pos = 3;
+ SubId = 0;
+ for(k = 0;(i < figlen) && (k < Length_SubId_list); k++) {
+ // iterate SubId
+ // b7-3, b2-0 b7-6, b5-1, b0 b7-4, b3-0 b7, b6-2, b1-0 b7-5, b4-0, b7-3
+ if (bit_pos >= 0) {
+ SubId |= (f[i] >> bit_pos) & 0x1F;
+ sprintf(desc, "SubId=0x%X", SubId);
+ // check SubId value
+ if ((SubId == 0) || (SubId > 23)) {
+ strcat(desc, " invalid value");
+ }
+ printbuf(desc, indent+3, NULL, 0);
+ bit_pos -= 5;
+ SubId = 0;
+ }
+ if (bit_pos < 0) {
+ SubId = (f[i] << abs(bit_pos)) & 0x1F;
+ bit_pos += 8;
+ i++;
+ }
+ }
+ if (bit_pos > 3) {
+ // jump padding
+ i++;
+ }
+ if (k < Length_SubId_list) {
+ sprintf(desc, "%d SubId missing, fig length too short !", (Length_SubId_list - k));
+ printbuf(desc, indent+3, NULL, 0);
+ }
+ }
+ if (j < Length_TII_list) {
+ sprintf(desc, "%d Transmitter group missing, fig length too short !", (Length_TII_list - j));
+ printbuf(desc, indent+2, NULL, 0);
+ }
+ }
+ }
+ else if (GATy == 1) {
+ // Coordinates
+ sprintf(desc, "GATy=%d Geographical area defined as a spherical rectangle by the geographical co-ordinates of one corner and its latitude and longitude extents, G/E flag=%d %s coverage area, RegionId=0x%X, database key=0x%X",
+ GATy, GE_flag, GE_flag?"Global":"Ensemble", Region_Id, key);
+ if (i < (figlen - 6)) {
+ Latitude_coarse = ((signed short)f[i] << 8) | ((unsigned short)f[i+1]);
+ Longitude_coarse = ((signed short)f[i+2] << 8) | ((unsigned short)f[i+3]);
+ gps_pos.latitude = ((double)Latitude_coarse) * 90 / 32768;
+ gps_pos.longitude = ((double)Latitude_coarse) * 180 / 32768;
+ sprintf(tmpbuf, ", Lat Lng coarse=0x%X 0x%X => %f, %f",
+ Latitude_coarse, Longitude_coarse, gps_pos.latitude, gps_pos.longitude);
+ strcat(desc, tmpbuf);
+ Extent_Latitude = ((unsigned short)f[i+4] << 4) | ((unsigned short)(f[i+5] >> 4));
+ Extent_Longitude = ((unsigned short)(f[i+5] & 0x0F) << 8) | ((unsigned short)f[i+6]);
+ gps_pos.latitude += ((double)Extent_Latitude) * 90 / 32768;
+ gps_pos.longitude += ((double)Extent_Longitude) * 180 / 32768;
+ sprintf(tmpbuf, ", Extent Lat Lng=0x%X 0x%X => %f, %f",
+ Extent_Latitude, Extent_Longitude, gps_pos.latitude, gps_pos.longitude);
+ strcat(desc, tmpbuf);
+ }
+ else {
+ sprintf(tmpbuf, ", Coordinates missing, fig length too short !");
+ strcat(desc, tmpbuf);
+ }
+ printbuf(desc, indent+1, NULL, 0);
+ i += 7;
+ }
+ else {
+ // Rfu
+ sprintf(desc, "GATy=%d reserved for future use of the geographical, G/E flag=%d %s coverage area, RegionId=0x%X, database key=0x%X, stop Region definition iteration %d/%d",
+ GATy, GE_flag, GE_flag?"Global":"Ensemble", Region_Id, key, i, figlen);
+ printbuf(desc, indent+1, NULL, 0);
+ // stop Region definition iteration
+ i = figlen;
+ }
+ }
+ }
+ break;
case 13: // FIG 0/13 User application information
{ // ETSI EN 300 401 8.1.20
uint32_t SId;
@@ -2286,7 +2438,7 @@ void decodeFIG(FIGalyser &figs,
sprintf(desc, "M/S=%d %sidentifier, MainId=0x%X",
MS, MS?"Sub-":"Main ", MainId);
// check MainId value
- if ((Mode_Identity == 1) || (Mode_Identity == 2) || (MainId == 4)) {
+ if ((Mode_Identity == 1) || (Mode_Identity == 2) || (Mode_Identity == 4)) {
if (MainId > 69) {
// The coding range shall be 0 to 69 for transmission modes I, II and IV
sprintf(tmpbuf, " invalid value for transmission mode %d", Mode_Identity);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-11 05:42:05 +0000