1586 lines
44 KiB
C
1586 lines
44 KiB
C
/* Radiocom 2000 protocol handling
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*
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* (C) 2017 by Andreas Eversberg <jolly@eversberg.eu>
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* All Rights Reserved
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#define CHAN r2000->sender.kanal
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <time.h>
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#include "../libsample/sample.h"
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#include "../libdebug/debug.h"
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#include "../libmncc/cause.h"
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#include "r2000.h"
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//#include "transaction.h"
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#include "frame.h"
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#include "dsp.h"
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#define CUT_OFF_EMPHASIS_R2000 300 //FIXME: use real cut-off / time constant
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#define PAGE_TRIES 3 /* how many times trying to page */
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#define IDENT_TIME 3.0 /* time to wait for identity response */
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#define ALERT_TIME 60.0 /* time to wait for party to answer */
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#define DIAL1_TIME 1.0 /* time to wait for party to dial digits 1..10 */
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#define DIAL2_TIME 0.5 /* time to wait for party to dial digits 11..20 */
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#define SUSPEND_TIME 1.0 /* time to wait for suspend response */
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#define SUPER_TIME1 4.0 /* time to release if not receiving initial supervisory signal */
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#define SUPER_TIME2 20.0 /* time to release after loosing supervisory signal */
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#define RELEASE_TIME 2.0 /* time to wait for release response */
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/* Call reference for calls from station mobile to network
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This offset of 0x400000000 is required for MNCC interface. */
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static int new_callref = 0x40000000;
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/* definiton of bands and channels */
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#define CHANNEL_SPACING 0.0125
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static struct r2000_bands {
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int number;
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const char *name;
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double dl_f0; /* first downlink channel (0) */
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int channels; /* number of channels (including 0) */
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double duplex; /* duplex distance (uplink below downlink) */
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} r2000_bands[] = {
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{ 1, "UHF", 424.8000, 256, 10.0 },
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{ 3, "VHF A/B", 169.8000, 296, 4.6 },
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{ 4, "VHF 5/6/1", 176.5000, 176, -8.0 },
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{ 5, "VHF 5/6/2", 178.7000, 192, -8.0 },
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{ 6, "VHF 5/6/3", 181.1000, 192, -8.0 },
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{ 7, "VHF 7/8/1", 200.5000, 176, 8.0 },
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{ 8, "VHF 7/8/2", 202.7000, 192, 8.0 },
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{ 9, "VHF 7/8/3", 205.1000, 192, 8.0 },
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{ 10, "VHF 9/10/1", 208.5000, 176, -8.0 },
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{ 11, "VHF 9/10/2", 210.7000, 192, -8.0 },
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{ 12, "VHF 9/10/3", 213.1000, 192, -8.0 },
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{ 0, NULL, 0.0, 0, 0.0 }
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};
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void r2000_band_list(void)
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{
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int i;
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printf("Bande\tName\t\tChannels\tDownlink\t\tUplink\n");
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printf("--------------------------------------------------------------------------\n");
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for (i = 0; r2000_bands[i].name; i++) {
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printf("%d\t%s%s\t0 .. %d\t%.4f..%.4f MHz\t%5.1f MHz\n",
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r2000_bands[i].number,
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r2000_bands[i].name,
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(strlen(r2000_bands[i].name) >= 8) ? "" : "\t",
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r2000_bands[i].channels - 1,
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r2000_bands[i].dl_f0,
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r2000_bands[i].dl_f0 + CHANNEL_SPACING * (double)(r2000_bands[i].channels - 1),
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-r2000_bands[i].duplex);
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}
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}
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/* Convert band+channel number to frequency number of base station.
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Set 'uplink' to 1 to get frequency of station mobile. */
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double r2000_channel2freq(int band, int channel, int uplink)
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{
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int i;
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double freq;
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for (i = 0; r2000_bands[i].name; i++) {
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if (r2000_bands[i].number == band)
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break;
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}
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if (!r2000_bands[i].name) {
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PDEBUG(DR2000, DEBUG_NOTICE, "Given band number is invalid! (use '-B list' for valid bands)\n");
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return 0.0;
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}
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if (channel < 0 || channel > r2000_bands[i].channels - 1) {
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PDEBUG(DR2000, DEBUG_NOTICE, "Given channel number %d invalid! (use '-B list' for valid channels)\n", channel);
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return 0.0;
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}
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if (uplink == 2)
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return -r2000_bands[i].duplex * 1e6;
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freq = r2000_bands[i].dl_f0 + CHANNEL_SPACING * (double)(channel);
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if (uplink)
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freq -= r2000_bands[i].duplex;
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return freq * 1e6;
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}
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const char *r2000_state_name(enum r2000_state state)
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{
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static char invalid[16];
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switch (state) {
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case STATE_NULL:
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return "(NULL)";
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case STATE_IDLE:
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return "IDLE";
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case STATE_INSCRIPTION:
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return "INSCRIPTION";
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case STATE_OUT_ASSIGN:
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return "OUT ASSIGN";
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case STATE_IN_ASSIGN:
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return "IN ASSIGN";
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case STATE_RECALL_ASSIGN:
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return "RECALL ASSIGN";
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case STATE_OUT_IDENT:
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return "OUT IDENT";
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case STATE_IN_IDENT:
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return "IN IDENT";
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case STATE_RECALL_IDENT:
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return "RECALL IDENT";
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case STATE_OUT_DIAL1:
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return "OUT DIAL1";
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case STATE_OUT_DIAL2:
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return "OUT DIAL2";
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case STATE_SUSPEND:
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return "SUSPEND";
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case STATE_RECALL_WAIT:
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return "RECALL WAIT";
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case STATE_IN_ALERT:
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return "IN ALERT";
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case STATE_OUT_ALERT:
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return "OUT ALERT";
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case STATE_RECALL_ALERT:
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return "RECALL ALERT";
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case STATE_ACTIVE:
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return "ACTIVE";
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case STATE_RELEASE_CC:
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return "RELEASE CC";
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case STATE_RELEASE_TC:
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return "RELEASE TC";
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}
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sprintf(invalid, "invalid(%d)", state);
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return invalid;
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}
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static const char *print_subscriber_subscr(r2000_subscriber_t *subscr);
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void r2000_display_status(void)
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{
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sender_t *sender;
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r2000_t *r2000;
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display_status_start();
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for (sender = sender_head; sender; sender = sender->next) {
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r2000 = (r2000_t *) sender;
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display_status_channel(r2000->sender.kanal, chan_type_short_name(r2000->sysinfo.chan_type), r2000_state_name(r2000->state));
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if (r2000->state != STATE_IDLE) {
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char result[32];
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sprintf(result, "%s", print_subscriber_subscr(&r2000->subscriber));
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display_status_subscriber(result, NULL);
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}
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}
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display_status_end();
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}
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static struct r2000_channels {
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enum r2000_chan_type chan_type;
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const char *short_name;
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const char *long_name;
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} r2000_channels[] = {
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{ CHAN_TYPE_CC, "CC", "control channel" },
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{ CHAN_TYPE_TC, "TC", "taffic channel" },
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{ CHAN_TYPE_CC_TC, "CC/TC","combined control & taffic channel" },
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{ 0, NULL, NULL }
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};
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void r2000_channel_list(void)
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{
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int i;
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printf("Type\t\tDescription\n");
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printf("------------------------------------------------------------------------\n");
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for (i = 0; r2000_channels[i].long_name; i++)
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printf("%s%s\t%s\n", r2000_channels[i].short_name, (strlen(r2000_channels[i].short_name) >= 8) ? "" : "\t", r2000_channels[i].long_name);
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}
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int r2000_channel_by_short_name(const char *short_name)
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{
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int i;
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for (i = 0; r2000_channels[i].short_name; i++) {
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if (!strcasecmp(r2000_channels[i].short_name, short_name)) {
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PDEBUG(DR2000, DEBUG_INFO, "Selecting channel '%s' = %s\n", r2000_channels[i].short_name, r2000_channels[i].long_name);
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return r2000_channels[i].chan_type;
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}
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}
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return -1;
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}
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const char *chan_type_short_name(enum r2000_chan_type chan_type)
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{
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int i;
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for (i = 0; r2000_channels[i].short_name; i++) {
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if (r2000_channels[i].chan_type == chan_type)
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return r2000_channels[i].short_name;
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}
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return "invalid";
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}
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const char *chan_type_long_name(enum r2000_chan_type chan_type)
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{
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int i;
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for (i = 0; r2000_channels[i].long_name; i++) {
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if (r2000_channels[i].chan_type == chan_type)
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return r2000_channels[i].long_name;
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}
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return "invalid";
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}
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static void r2000_new_state(r2000_t *r2000, enum r2000_state new_state)
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{
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if (r2000->state == new_state)
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return;
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PDEBUG_CHAN(DR2000, DEBUG_DEBUG, "State change: %s -> %s\n", r2000_state_name(r2000->state), r2000_state_name(new_state));
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r2000->state = new_state;
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r2000_display_status();
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r2000->tx_frame_count = 0;
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}
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/* used to print station mobile data */
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static const char *print_subscriber_frame(frame_t *frame)
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{
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static char result[32];
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sprintf(result, "%d,%03d,%05d", frame->sm_type, frame->sm_relais, frame->sm_mor);
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return result;
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}
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static const char *print_subscriber_subscr(r2000_subscriber_t *subscr)
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{
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static char result[32];
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sprintf(result, "%d,%03d,%05d", subscr->type, subscr->relais, subscr->mor);
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return result;
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}
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/* convert station mobile id to 9 digits caller data */
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static const char *subscriber2string(r2000_subscriber_t *subscr)
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{
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static char result[32];
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sprintf(result, "%d%03d%05d", subscr->type, subscr->relais, subscr->mor);
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return result;
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}
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/* convert 9-digits dial string to station mobile data */
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static int string2subscriber(const char *dialstring, r2000_subscriber_t *subscr)
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{
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char check[6];
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int type, relais, mor;
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int i;
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if (strlen(dialstring) != 9) {
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PDEBUG(DR2000, DEBUG_NOTICE, "Wrong number of digits, use 9 digits: TRRRXXXXX (T=type, R=relais, X=mobile number)\n");
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return -1;
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}
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for (i = 0; i < (int)strlen(dialstring); i++) {
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if (dialstring[i] < '0' || dialstring[i] > '9') {
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PDEBUG(DR2000, DEBUG_NOTICE, "Invalid digit in dial string, use only 0..9.\n");
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return -1;
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}
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}
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memcpy(check, dialstring, 1);
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check[1] = '\0';
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type = atoi(check);
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if (type < 1 || type > 511) {
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PDEBUG(DR2000, DEBUG_NOTICE, "Invalid station type in dial string, use 0..7 as station mobile type.\n");
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return -1;
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}
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memcpy(check, dialstring + 1, 3);
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check[3] = '\0';
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relais = atoi(check);
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if (relais < 1 || relais > 511) {
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PDEBUG(DR2000, DEBUG_NOTICE, "Invalid relais number in dial string, use 000..511 as relais number.\n");
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return -1;
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}
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memcpy(check, dialstring + 4, 5);
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check[5] = '\0';
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mor = atoi(check);
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if (mor > 65535) {
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PDEBUG(DR2000, DEBUG_NOTICE, "Invalid mobile number in dial string, use 00000..65535 as mobile number.\n");
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return -1;
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}
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subscr->type = type;
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subscr->relais = relais;
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subscr->mor = mor;
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return 0;
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}
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static int match_voie(r2000_t *r2000, frame_t *frame, uint8_t voie)
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{
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if (frame->voie == 0 && voie == 1) {
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PDEBUG_CHAN(DR2000, DEBUG_NOTICE, "Frame for control channel, but expecting traffic channel, ignoring. (maybe radio noise)\n");
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return 0;
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}
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if (frame->voie == 1 && voie == 0) {
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PDEBUG_CHAN(DR2000, DEBUG_NOTICE, "Frame for traffic channel, but expecting control channel, ignoring. (maybe radio noise)\n");
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return 0;
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}
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return 1;
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}
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static int match_channel(r2000_t *r2000, frame_t *frame)
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{
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if (frame->channel != r2000->sender.kanal) {
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PDEBUG_CHAN(DR2000, DEBUG_NOTICE, "Frame for different channel %d received, ignoring.\n", frame->channel);
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return 0;
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}
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return 1;
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}
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static int match_relais(r2000_t *r2000, frame_t *frame)
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{
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if (frame->relais != r2000->sysinfo.relais) {
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PDEBUG_CHAN(DR2000, DEBUG_NOTICE, "Frame for different relais %d received, ignoring.\n", frame->relais);
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return 0;
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}
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return 1;
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}
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static int match_subscriber(r2000_t *r2000, frame_t *frame)
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{
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/* ignore dialing messages, because subscriber info is not used in there */
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if (frame->message == 19 || frame->message == 20)
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return 1;
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if (r2000->subscriber.relais != frame->sm_relais
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|| r2000->subscriber.mor != frame->sm_mor) {
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PDEBUG_CHAN(DR2000, DEBUG_NOTICE, "Frame for different subscriber '%s' received, ignoring.\n", print_subscriber_frame(frame));
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return 0;
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}
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return 1;
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}
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/* convert nconv to supervisory digit to be transmitted to phone */
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uint8_t r2000_encode_super(r2000_t *r2000)
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{
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uint8_t super, nconv, relais;
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nconv = r2000->sysinfo.nconv;
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relais = r2000->sysinfo.relais & 0xf;
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/* LSB first */
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super = ((nconv << 2) & 0x04)
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| (nconv & 0x02)
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| ((nconv >> 2) & 0x01)
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| ((relais << 6) & 0x40)
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| ((relais << 4) & 0x20)
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| ((relais << 2) & 0x10)
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| (relais & 0x08);
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PDEBUG_CHAN(DDSP, DEBUG_INFO, "TX Supervisory: NCONV: %d relais (4 lowest bits): %d\n", nconv, relais);
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return super ^ 0x7f;
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}
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static void r2000_timeout(struct timer *timer);
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/* Create transceiver instance and link to a list. */
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int r2000_create(int band, int channel, enum r2000_chan_type chan_type, const char *audiodev, int use_sdr, int samplerate, double rx_gain, int pre_emphasis, int de_emphasis, const char *write_rx_wave, const char *write_tx_wave, const char *read_rx_wave, const char *read_tx_wave, uint16_t relais, uint8_t deport, uint8_t agi, uint8_t sm_power, uint8_t taxe, uint8_t crins, int destruction, uint8_t nconv, int recall, int loopback)
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{
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sender_t *sender;
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r2000_t *r2000 = NULL;
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int rc;
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/* check channel matching and set deviation factor */
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if (r2000_channel2freq(band, channel, 0) == 0.0)
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return -EINVAL;
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for (sender = sender_head; sender; sender = sender->next) {
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r2000 = (r2000_t *)sender;
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if ((r2000->sysinfo.chan_type == CHAN_TYPE_CC || r2000->sysinfo.chan_type == CHAN_TYPE_CC_TC)
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&& (chan_type == CHAN_TYPE_CC || chan_type == CHAN_TYPE_CC_TC)) {
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PDEBUG(DCNETZ, DEBUG_NOTICE, "More than one control channel is not supported, please define other channels as traffic channels!\n");
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return -EINVAL;
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}
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}
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r2000 = calloc(1, sizeof(r2000_t));
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if (!r2000) {
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PDEBUG(DR2000, DEBUG_ERROR, "No memory!\n");
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return -ENOMEM;
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}
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PDEBUG(DR2000, DEBUG_DEBUG, "Creating 'Radiocom 2000' instance for channel = %d (sample rate %d).\n", channel, samplerate);
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/* init general part of transceiver */
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rc = sender_create(&r2000->sender, channel, r2000_channel2freq(band, channel, 0), r2000_channel2freq(band, channel, 1), audiodev, use_sdr, samplerate, rx_gain, 0, 0, write_rx_wave, write_tx_wave, read_rx_wave, read_tx_wave, loopback, PAGING_SIGNAL_NONE);
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if (rc < 0) {
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PDEBUG(DR2000, DEBUG_ERROR, "Failed to init transceiver process!\n");
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goto error;
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}
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timer_init(&r2000->timer, r2000_timeout, r2000);
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r2000->sysinfo.relais = relais;
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r2000->sysinfo.chan_type = chan_type;
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r2000->sysinfo.deport = deport;
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r2000->sysinfo.agi = agi;
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r2000->sysinfo.sm_power = sm_power;
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r2000->sysinfo.taxe = taxe;
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r2000->sysinfo.crins = crins;
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r2000->sysinfo.nconv = nconv;
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r2000->sysinfo.recall = recall;
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if (crins == 3 && destruction != 2342) {
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PDEBUG(DR2000, DEBUG_ERROR, "Crins is 3, but destruction is not confirmed, please fix!\n");
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abort();
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}
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r2000->compandor = 1;
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r2000->pre_emphasis = pre_emphasis;
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r2000->de_emphasis = de_emphasis;
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rc = init_emphasis(&r2000->estate, samplerate, CUT_OFF_EMPHASIS_R2000);
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if (rc < 0)
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goto error;
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|
/* init audio processing */
|
|
rc = dsp_init_sender(r2000);
|
|
if (rc < 0) {
|
|
PDEBUG(DR2000, DEBUG_ERROR, "Failed to init audio processing!\n");
|
|
goto error;
|
|
}
|
|
|
|
/* go into idle state */
|
|
r2000_go_idle(r2000);
|
|
|
|
PDEBUG(DR2000, DEBUG_NOTICE, "Created channel #%d of type '%s' = %s\n", channel, chan_type_short_name(chan_type), chan_type_long_name(chan_type));
|
|
|
|
return 0;
|
|
|
|
error:
|
|
r2000_destroy(&r2000->sender);
|
|
|
|
return rc;
|
|
}
|
|
|
|
void r2000_check_channels(void)
|
|
{
|
|
sender_t *sender;
|
|
r2000_t *r2000;
|
|
int cc = 0, tc = 0, combined = 0;
|
|
|
|
for (sender = sender_head; sender; sender = sender->next) {
|
|
r2000 = (r2000_t *) sender;
|
|
if (r2000->sysinfo.chan_type == CHAN_TYPE_CC)
|
|
cc = 1;
|
|
if (r2000->sysinfo.chan_type == CHAN_TYPE_TC)
|
|
tc = 1;
|
|
if (r2000->sysinfo.chan_type == CHAN_TYPE_CC_TC) {
|
|
cc = 1;
|
|
tc = 1;
|
|
combined = 1;
|
|
}
|
|
}
|
|
if (cc && !tc) {
|
|
PDEBUG(DR2000, DEBUG_NOTICE, "*** Selected channel(s) can be used for control only.\n");
|
|
PDEBUG(DR2000, DEBUG_NOTICE, "*** No call is possible at all!\n");
|
|
PDEBUG(DR2000, DEBUG_NOTICE, "*** Use combined 'CC/TC' instead!\n");
|
|
}
|
|
if (tc && !cc) {
|
|
PDEBUG(DR2000, DEBUG_NOTICE, "*** Selected channel(s) can be used for traffic only.\n");
|
|
PDEBUG(DR2000, DEBUG_NOTICE, "*** No register/call is possible at all!\n");
|
|
PDEBUG(DR2000, DEBUG_NOTICE, "*** Use combined 'CC/TC' instead!\n");
|
|
}
|
|
if (combined) {
|
|
PDEBUG(DR2000, DEBUG_NOTICE, "*** Selected (non standard) combined 'CC/TC'.\n");
|
|
PDEBUG(DR2000, DEBUG_NOTICE, "Phones might reject this, but non of my phones does, so it's ok.\n");
|
|
}
|
|
}
|
|
|
|
/* Destroy transceiver instance and unlink from list. */
|
|
void r2000_destroy(sender_t *sender)
|
|
{
|
|
r2000_t *r2000 = (r2000_t *) sender;
|
|
|
|
PDEBUG(DR2000, DEBUG_DEBUG, "Destroying 'Radiocom 2000' instance for channel = %d.\n", sender->kanal);
|
|
dsp_cleanup_sender(r2000);
|
|
timer_exit(&r2000->timer);
|
|
sender_destroy(&r2000->sender);
|
|
free(r2000);
|
|
}
|
|
|
|
/* go idle and return to frame mode */
|
|
void r2000_go_idle(r2000_t *r2000)
|
|
{
|
|
timer_stop(&r2000->timer);
|
|
|
|
if (r2000->callref) {
|
|
PDEBUG(DR2000, DEBUG_ERROR, "Going idle, but still having callref, please fix!\n");
|
|
call_up_release(r2000->callref, CAUSE_NORMAL);
|
|
r2000->callref = 0;
|
|
}
|
|
|
|
if (r2000->sysinfo.chan_type == CHAN_TYPE_TC) {
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, "Entering IDLE state, no transmission at relais %d on %s.\n", r2000->sysinfo.relais, chan_type_long_name(r2000->sysinfo.chan_type));
|
|
r2000_set_dsp_mode(r2000, DSP_MODE_OFF, -1);
|
|
} else {
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, "Entering IDLE state, sending idle frames of relais %d on %s.\n", r2000->sysinfo.relais, chan_type_long_name(r2000->sysinfo.chan_type));
|
|
r2000_set_dsp_mode(r2000, DSP_MODE_FRAME, (r2000->sender.loopback) ? r2000_encode_super(r2000) : -1);
|
|
}
|
|
r2000_new_state(r2000, STATE_IDLE);
|
|
|
|
// r2000_set_dsp_mode(r2000, DSP_MODE_AUDIO, r2000_encode_super(r2000));
|
|
}
|
|
|
|
/* release towards station mobile */
|
|
void r2000_release(r2000_t *r2000)
|
|
{
|
|
if (r2000->state == STATE_IDLE
|
|
|| r2000->state == STATE_OUT_ASSIGN
|
|
|| r2000->state == STATE_IN_ASSIGN
|
|
|| r2000->state == STATE_RECALL_ASSIGN
|
|
|| r2000->state == STATE_RECALL_WAIT) {
|
|
/* release on CC */
|
|
r2000_new_state(r2000, STATE_RELEASE_CC);
|
|
timer_start(&r2000->timer, RELEASE_TIME);
|
|
} else {
|
|
/* release on TC */
|
|
r2000_new_state(r2000, STATE_RELEASE_TC);
|
|
timer_start(&r2000->timer, RELEASE_TIME);
|
|
}
|
|
r2000_set_dsp_mode(r2000, DSP_MODE_FRAME, -1);
|
|
}
|
|
|
|
static void r2000_page(r2000_t *r2000, int try, enum r2000_state state)
|
|
{
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, "Entering paging state (try %d), sending 'Appel' to '%s'.\n", try, print_subscriber_subscr(&r2000->subscriber));
|
|
r2000_new_state(r2000, state);
|
|
r2000->page_try = try;
|
|
}
|
|
|
|
static r2000_t *get_free_chan(enum r2000_chan_type chan_type)
|
|
{
|
|
sender_t *sender;
|
|
r2000_t *r2000, *combined = NULL;
|
|
|
|
for (sender = sender_head; sender; sender = sender->next) {
|
|
r2000 = (r2000_t *) sender;
|
|
/* only search for idle channel */
|
|
if (r2000->state != STATE_IDLE)
|
|
continue;
|
|
/* found exactly what we want */
|
|
if (r2000->sysinfo.chan_type == chan_type)
|
|
return r2000;
|
|
/* use combined channel as alternative */
|
|
if (!combined && r2000->sysinfo.chan_type == CHAN_TYPE_CC_TC)
|
|
combined = r2000;
|
|
}
|
|
|
|
/* return alternative, if any */
|
|
return combined;
|
|
}
|
|
|
|
/* try to move call to given channel, release callref, if not possible */
|
|
static r2000_t *move_call_to_chan(r2000_t *old_r2000, enum r2000_chan_type chan_type)
|
|
{
|
|
r2000_t *new_r2000 = get_free_chan(chan_type);
|
|
|
|
/* no free channel, reuse combined channel, if possible, or release call */
|
|
if (!new_r2000 && old_r2000->sysinfo.chan_type == CHAN_TYPE_CC_TC) {
|
|
PDEBUG(DR2000, DEBUG_NOTICE, "No %s found, straying on %s!\n", chan_type_long_name(chan_type), chan_type_long_name(old_r2000->sysinfo.chan_type));
|
|
return old_r2000;
|
|
}
|
|
if (!new_r2000) {
|
|
PDEBUG(DR2000, DEBUG_NOTICE, "Cannot move us to %s, because there is no free channel!\n", chan_type_long_name(chan_type));
|
|
if (old_r2000->callref) {
|
|
PDEBUG(DR2000, DEBUG_NOTICE, "Failed to assign channel, releasing towards network\n");
|
|
call_up_release(old_r2000->callref, CAUSE_NOCHANNEL);
|
|
old_r2000->callref = 0;
|
|
}
|
|
r2000_release(old_r2000);
|
|
return NULL;
|
|
}
|
|
|
|
/* move subscriber */
|
|
memcpy(&new_r2000->subscriber, &old_r2000->subscriber, sizeof(r2000_subscriber_t));
|
|
|
|
/* move callref */
|
|
new_r2000->callref = old_r2000->callref;
|
|
|
|
/* move dsp mode */
|
|
r2000_set_dsp_mode(new_r2000, old_r2000->dsp_mode, -1);
|
|
|
|
/* move call state */
|
|
r2000_new_state(new_r2000, old_r2000->state);
|
|
|
|
/* cleanup old channel */
|
|
old_r2000->callref = 0;
|
|
r2000_go_idle(old_r2000);
|
|
|
|
return new_r2000;
|
|
}
|
|
|
|
/*
|
|
* idle process
|
|
*/
|
|
|
|
/* trasmit beacon */
|
|
static void tx_idle(r2000_t __attribute__((unused)) *r2000, frame_t *frame)
|
|
{
|
|
frame->voie = 1;
|
|
frame->message = 1;
|
|
}
|
|
|
|
/*
|
|
* registration process
|
|
*/
|
|
|
|
/* receive registration */
|
|
static void rx_idle(r2000_t *r2000, frame_t *frame)
|
|
{
|
|
if (!match_voie(r2000, frame, 0))
|
|
return;
|
|
if (!match_channel(r2000, frame))
|
|
return;
|
|
if (!match_relais(r2000, frame))
|
|
return;
|
|
|
|
switch(frame->message) {
|
|
case 0:
|
|
/* inscription */
|
|
r2000->subscriber.type = frame->sm_type;
|
|
r2000->subscriber.relais = frame->sm_relais;
|
|
r2000->subscriber.mor = frame->sm_mor;
|
|
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, "Received inscription from station mobile '%s'\n", print_subscriber_subscr(&r2000->subscriber));
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, " -> Mobile Type: %d'\n", r2000->subscriber.type);
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, " -> Home Relais: %d'\n", r2000->subscriber.relais);
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, " -> Mobile ID: %d'\n", r2000->subscriber.mor);
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, " (Use '%s' as dial string to call the station mobile.)'\n", subscriber2string(&r2000->subscriber));
|
|
|
|
r2000_new_state(r2000, STATE_INSCRIPTION);
|
|
break;
|
|
case 1:
|
|
case 3:
|
|
/* call request */
|
|
r2000->subscriber.type = frame->sm_type;
|
|
r2000->subscriber.relais = frame->sm_relais;
|
|
r2000->subscriber.mor = frame->sm_mor;
|
|
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, "Received outgoing call from station mobile '%s'\n", print_subscriber_frame(frame));
|
|
|
|
r2000_t *tc = get_free_chan(CHAN_TYPE_TC);
|
|
if (!tc) {
|
|
PDEBUG_CHAN(DR2000, DEBUG_NOTICE, "Rejecting mobile originated call, no free traffic channel\n");
|
|
r2000_release(r2000);
|
|
return;
|
|
}
|
|
r2000_new_state(r2000, STATE_OUT_ASSIGN);
|
|
break;
|
|
default:
|
|
PDEBUG_CHAN(DR2000, DEBUG_DEBUG, "Dropping frame %s in state %s\n", r2000_frame_name(frame->message, SM_TO_REL), r2000_state_name(r2000->state));
|
|
}
|
|
}
|
|
|
|
/* confirm registration */
|
|
static void tx_inscription(r2000_t *r2000, frame_t *frame)
|
|
{
|
|
frame->voie = 1;
|
|
frame->message = 0;
|
|
frame->sm_type = r2000->subscriber.type;
|
|
frame->sm_relais = r2000->subscriber.relais;
|
|
frame->sm_mor = r2000->subscriber.mor;
|
|
frame->crins = r2000->sysinfo.crins;
|
|
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, "Sending inscription acknowledge\n");
|
|
|
|
r2000_go_idle(r2000);
|
|
}
|
|
|
|
/*
|
|
* channel assignment process
|
|
*/
|
|
|
|
/* confirm dialing, assign outgoing call */
|
|
static void tx_out_assign(r2000_t *r2000, frame_t *frame)
|
|
{
|
|
/* NOTE: We can only send this frame once, because afterwards we
|
|
* have moved to the new channel already!
|
|
*/
|
|
|
|
/* move us to tc */
|
|
r2000_t *tc = move_call_to_chan(r2000, CHAN_TYPE_TC);
|
|
if (!tc) {
|
|
tx_idle(r2000, frame);
|
|
return;
|
|
}
|
|
|
|
frame->voie = 1;
|
|
frame->message = 5;
|
|
frame->sm_type = r2000->subscriber.type;
|
|
frame->sm_relais = r2000->subscriber.relais;
|
|
frame->sm_mor = r2000->subscriber.mor;
|
|
frame->chan_assign = tc->sender.kanal;
|
|
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, "Sending outgoing assignment from channel %d to %d\n", r2000->sender.kanal, tc->sender.kanal);
|
|
|
|
r2000_new_state(tc, (tc->state == STATE_OUT_ASSIGN) ? STATE_OUT_IDENT : STATE_RECALL_IDENT);
|
|
timer_start(&tc->timer, IDENT_TIME);
|
|
}
|
|
|
|
/* page phone, assign incoming call */
|
|
static void tx_in_assign(r2000_t *r2000, frame_t *frame)
|
|
{
|
|
/* NOTE: We can only send this frame once, because afterwards we
|
|
* have moved to the new channel already!
|
|
*/
|
|
|
|
/* move us to tc */
|
|
r2000_t *tc = move_call_to_chan(r2000, CHAN_TYPE_TC);
|
|
if (!tc) {
|
|
tx_idle(r2000, frame);
|
|
return;
|
|
}
|
|
|
|
frame->voie = 1;
|
|
frame->message = 3;
|
|
frame->sm_type = r2000->subscriber.type;
|
|
frame->sm_relais = r2000->subscriber.relais;
|
|
frame->sm_mor = r2000->subscriber.mor;
|
|
frame->chan_assign = tc->sender.kanal;
|
|
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, "Sending incoming assignment from channel %d to %d\n", r2000->sender.kanal, tc->sender.kanal);
|
|
|
|
r2000_new_state(tc, STATE_IN_IDENT);
|
|
timer_start(&tc->timer, IDENT_TIME);
|
|
}
|
|
|
|
/*
|
|
* identity process
|
|
*/
|
|
|
|
/* identity request on assigned channel */
|
|
static void tx_ident(r2000_t *r2000, frame_t *frame)
|
|
{
|
|
frame->voie = 0;
|
|
frame->message = 16;
|
|
frame->sm_type = r2000->subscriber.type;
|
|
frame->sm_relais = r2000->subscriber.relais;
|
|
frame->sm_mor = r2000->subscriber.mor;
|
|
|
|
if (r2000->tx_frame_count == 1)
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, "Sending identity requrest\n");
|
|
}
|
|
|
|
/* receive identity response */
|
|
static void rx_ident(r2000_t *r2000, frame_t *frame)
|
|
{
|
|
if (!match_voie(r2000, frame, 1))
|
|
return;
|
|
if (!match_channel(r2000, frame))
|
|
return;
|
|
if (!match_relais(r2000, frame))
|
|
return;
|
|
if (!match_subscriber(r2000, frame))
|
|
return;
|
|
|
|
switch(frame->message) {
|
|
case 16:
|
|
/* identity response */
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, "Received identity response from station mobile '%s'\n", print_subscriber_frame(frame));
|
|
|
|
switch (r2000->state) {
|
|
case STATE_IN_IDENT:
|
|
/* alert the phone */
|
|
r2000_new_state(r2000, STATE_IN_ALERT);
|
|
timer_start(&r2000->timer, ALERT_TIME);
|
|
call_up_alerting(r2000->callref);
|
|
break;
|
|
case STATE_RECALL_IDENT:
|
|
/* alert the phone */
|
|
r2000_new_state(r2000, STATE_RECALL_ALERT);
|
|
timer_start(&r2000->timer, ALERT_TIME);
|
|
break;
|
|
case STATE_OUT_IDENT:
|
|
/* request dial string */
|
|
r2000_new_state(r2000, STATE_OUT_DIAL1);
|
|
timer_start(&r2000->timer, DIAL1_TIME);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
PDEBUG_CHAN(DR2000, DEBUG_DEBUG, "Dropping frame %s in state %s\n", r2000_frame_name(frame->message, SM_TO_REL), r2000_state_name(r2000->state));
|
|
}
|
|
}
|
|
|
|
/* no identity response from phone */
|
|
static void timeout_out_ident(r2000_t *r2000)
|
|
{
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, "Timeout receiving identity (outgoing call)\n");
|
|
|
|
r2000_go_idle(r2000);
|
|
}
|
|
|
|
static void timeout_in_ident(r2000_t *r2000)
|
|
{
|
|
if (r2000->state == STATE_IN_IDENT)
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, "Timeout receiving identity (incoming call)\n");
|
|
else
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, "Timeout receiving identity (recalling outgoing call)\n");
|
|
|
|
/* move us back to cc */
|
|
r2000 = move_call_to_chan(r2000, CHAN_TYPE_CC);
|
|
if (!r2000)
|
|
return;
|
|
|
|
/* page again ... */
|
|
if (--r2000->page_try) {
|
|
r2000_page(r2000, r2000->page_try, (r2000->state == STATE_IN_IDENT) ? STATE_IN_ASSIGN: STATE_RECALL_ASSIGN);
|
|
return;
|
|
}
|
|
|
|
/* ... or release */
|
|
PDEBUG_CHAN(DR2000, DEBUG_NOTICE, "Phone does not response, releasing towards network\n");
|
|
call_up_release(r2000->callref, CAUSE_OUTOFORDER);
|
|
r2000->callref = 0;
|
|
r2000_release(r2000);
|
|
}
|
|
|
|
/*
|
|
* alerting process (mobile rings)
|
|
*/
|
|
|
|
static void tx_invitation(r2000_t *r2000, frame_t *frame, uint16_t invitation, uint8_t nconv)
|
|
{
|
|
frame->voie = 0;
|
|
frame->message = 17;
|
|
frame->sm_type = r2000->subscriber.type;
|
|
frame->sm_relais = r2000->subscriber.relais;
|
|
frame->sm_mor = r2000->subscriber.mor;
|
|
frame->invitation = invitation;
|
|
frame->nconv = nconv;
|
|
}
|
|
|
|
/* alert the phone */
|
|
static void tx_alert(r2000_t *r2000, frame_t *frame)
|
|
{
|
|
tx_invitation(r2000, frame, 3, r2000->sysinfo.nconv);
|
|
|
|
if (r2000->tx_frame_count == 1)
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, "Sending answer invitation to station mobile\n");
|
|
}
|
|
|
|
static int setup_call(r2000_t *r2000)
|
|
{
|
|
int callref = ++new_callref;
|
|
int rc;
|
|
|
|
/* make call toward network */
|
|
PDEBUG(DR2000, DEBUG_INFO, "Setup call to network.\n");
|
|
/* must set callref, since MNCC may directly call call_down_answer to trigger recall, nested in call_up_setup */
|
|
r2000->callref = callref;
|
|
rc = call_up_setup(callref, subscriber2string(&r2000->subscriber), r2000->subscriber.dialing);
|
|
if (rc < 0) {
|
|
PDEBUG(DR2000, DEBUG_NOTICE, "Call rejected (cause %d), releasing.\n", -rc);
|
|
r2000->callref = 0;
|
|
r2000_release(r2000);
|
|
return rc;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* receive answer */
|
|
static void rx_alert(r2000_t *r2000, frame_t *frame)
|
|
{
|
|
if (!match_voie(r2000, frame, 1))
|
|
return;
|
|
if (!match_channel(r2000, frame))
|
|
return;
|
|
if (!match_relais(r2000, frame))
|
|
return;
|
|
if (!match_subscriber(r2000, frame))
|
|
return;
|
|
|
|
switch(frame->message) {
|
|
case 17:
|
|
/* answer */
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, "Received answer from station mobile '%s'\n", print_subscriber_frame(frame));
|
|
|
|
switch (r2000->state) {
|
|
case STATE_IN_ALERT:
|
|
/* answer incomming call */
|
|
PDEBUG(DR2000, DEBUG_INFO, "Answer call to network.\n");
|
|
call_up_answer(r2000->callref, subscriber2string(&r2000->subscriber));
|
|
break;
|
|
case STATE_OUT_ALERT:
|
|
/* setup call, possible r2000_release() is called there! */
|
|
if (setup_call(r2000) < 0)
|
|
return;
|
|
break;
|
|
default:
|
|
/* answer after recall, stop recall tone */
|
|
call_tone_recall(r2000->callref, 0);
|
|
break;
|
|
}
|
|
/* go active */
|
|
timer_stop(&r2000->timer);
|
|
r2000_new_state(r2000, STATE_ACTIVE);
|
|
r2000_set_dsp_mode(r2000, DSP_MODE_AUDIO_TX, r2000_encode_super(r2000));
|
|
/* start supervisory timer */
|
|
timer_start(&r2000->timer, SUPER_TIME1);
|
|
break;
|
|
default:
|
|
PDEBUG_CHAN(DR2000, DEBUG_DEBUG, "Dropping frame %s in state %s\n", r2000_frame_name(frame->message, SM_TO_REL), r2000_state_name(r2000->state));
|
|
}
|
|
}
|
|
|
|
/* no answer */
|
|
static void timeout_alert(r2000_t *r2000)
|
|
{
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, "Timeout while alerting\n");
|
|
|
|
PDEBUG_CHAN(DR2000, DEBUG_NOTICE, "Phone does not response, releasing towards network\n");
|
|
if (r2000->callref) {
|
|
call_up_release(r2000->callref, CAUSE_NOANSWER);
|
|
r2000->callref = 0;
|
|
}
|
|
r2000_release(r2000);
|
|
}
|
|
|
|
/*
|
|
* dialing process (mobile dials)
|
|
*/
|
|
|
|
/* request digits from the phone */
|
|
static void tx_out_dial(r2000_t *r2000, frame_t *frame)
|
|
{
|
|
tx_invitation(r2000, frame, 10, 0);
|
|
|
|
if (r2000->tx_frame_count == 1)
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, "Sending dialing invitation to station mobile\n");
|
|
}
|
|
|
|
/* receive digits */
|
|
static void rx_out_dial1(r2000_t *r2000, frame_t *frame)
|
|
{
|
|
int i;
|
|
|
|
if (!match_voie(r2000, frame, 1))
|
|
return;
|
|
if (!match_channel(r2000, frame))
|
|
return;
|
|
if (!match_relais(r2000, frame))
|
|
return;
|
|
|
|
switch(frame->message) {
|
|
case 19:
|
|
/* digits */
|
|
for (i = 0; i < 10; i++)
|
|
r2000->subscriber.dialing[i] = frame->digit[i] + '0';
|
|
r2000->subscriber.dialing[10] = '\0';
|
|
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, "Received digits 1..10 from station mobile: %s\n", r2000->subscriber.dialing);
|
|
|
|
r2000_new_state(r2000, STATE_OUT_DIAL2);
|
|
timer_start(&r2000->timer, DIAL2_TIME);
|
|
break;
|
|
default:
|
|
PDEBUG_CHAN(DR2000, DEBUG_DEBUG, "Dropping frame %s in state %s\n", r2000_frame_name(frame->message, SM_TO_REL), r2000_state_name(r2000->state));
|
|
}
|
|
}
|
|
|
|
/* no digits */
|
|
static void timeout_out_dial1(r2000_t *r2000)
|
|
{
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, "Timeout while receiving digits (outgoing call)\n");
|
|
|
|
r2000_release(r2000);
|
|
}
|
|
|
|
/* receive digits */
|
|
static void rx_out_dial2(r2000_t *r2000, frame_t *frame)
|
|
{
|
|
int i;
|
|
|
|
if (!match_voie(r2000, frame, 1))
|
|
return;
|
|
if (!match_channel(r2000, frame))
|
|
return;
|
|
if (!match_relais(r2000, frame))
|
|
return;
|
|
|
|
switch(frame->message) {
|
|
case 20:
|
|
/* digits */
|
|
for (i = 0; i < 10; i++)
|
|
r2000->subscriber.dialing[i + 10] = frame->digit[i] + '0';
|
|
r2000->subscriber.dialing[20] = '\0';
|
|
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, "Received digits 11..20 from station mobile: %s\n", r2000->subscriber.dialing);
|
|
|
|
if (r2000->sysinfo.recall) {
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, "Suspending call until called party has answered\n");
|
|
r2000_new_state(r2000, STATE_SUSPEND);
|
|
timer_start(&r2000->timer, SUSPEND_TIME);
|
|
} else {
|
|
r2000_new_state(r2000, STATE_OUT_ALERT);
|
|
timer_start(&r2000->timer, ALERT_TIME);
|
|
}
|
|
break;
|
|
default:
|
|
PDEBUG_CHAN(DR2000, DEBUG_DEBUG, "Dropping frame %s in state %s\n", r2000_frame_name(frame->message, SM_TO_REL), r2000_state_name(r2000->state));
|
|
}
|
|
}
|
|
|
|
/* no additional digits */
|
|
static void timeout_out_dial2(r2000_t *r2000)
|
|
{
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, "Phone does not send digits 11..20\n");
|
|
|
|
if (r2000->sysinfo.recall) {
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, "Suspending call until called party has answered\n");
|
|
r2000_new_state(r2000, STATE_SUSPEND);
|
|
timer_start(&r2000->timer, SUSPEND_TIME);
|
|
} else {
|
|
r2000_new_state(r2000, STATE_OUT_ALERT);
|
|
timer_start(&r2000->timer, ALERT_TIME);
|
|
}
|
|
}
|
|
|
|
/* release after dialing */
|
|
static void tx_suspend(r2000_t *r2000, frame_t *frame)
|
|
{
|
|
frame->voie = 0;
|
|
frame->message = 26;
|
|
frame->sm_type = r2000->subscriber.type;
|
|
frame->sm_relais = r2000->subscriber.relais;
|
|
frame->sm_mor = r2000->subscriber.mor;
|
|
|
|
if (r2000->tx_frame_count == 1)
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, "Sending suspend frame\n");
|
|
}
|
|
|
|
/* release response */
|
|
static void rx_suspend(r2000_t *r2000, frame_t *frame)
|
|
{
|
|
if (!match_voie(r2000, frame, 1))
|
|
return;
|
|
if (!match_channel(r2000, frame))
|
|
return;
|
|
if (!match_relais(r2000, frame))
|
|
return;
|
|
if (!match_subscriber(r2000, frame))
|
|
return;
|
|
|
|
switch(frame->message) {
|
|
case 26:
|
|
/* suspend ack */
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, "Received suspend response from station mobile '%s'\n", print_subscriber_frame(frame));
|
|
|
|
timer_stop(&r2000->timer);
|
|
/* move us back to cc */
|
|
r2000 = move_call_to_chan(r2000, CHAN_TYPE_CC);
|
|
if (!r2000)
|
|
return;
|
|
r2000_new_state(r2000, STATE_RECALL_WAIT);
|
|
/* setup call, possible r2000_release() is called there! */
|
|
if (setup_call(r2000) < 0)
|
|
return;
|
|
break;
|
|
default:
|
|
PDEBUG_CHAN(DR2000, DEBUG_DEBUG, "Dropping frame %s in state %s\n", r2000_frame_name(frame->message, SM_TO_REL), r2000_state_name(r2000->state));
|
|
}
|
|
}
|
|
|
|
/* response to accept frame */
|
|
static void timeout_suspend(r2000_t *r2000)
|
|
{
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, "Phone does not respond to suspend frame\n");
|
|
|
|
r2000_release(r2000);
|
|
}
|
|
|
|
/*
|
|
* process during active call
|
|
*/
|
|
|
|
static void timeout_active(r2000_t *r2000)
|
|
{
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, "Timeout after loosing supervisory signal, releasing call\n");
|
|
|
|
call_up_release(r2000->callref, CAUSE_TEMPFAIL);
|
|
r2000->callref = 0;
|
|
r2000_release(r2000);
|
|
}
|
|
|
|
/*
|
|
* release process
|
|
*/
|
|
|
|
static void tx_release_cc(r2000_t *r2000, frame_t *frame)
|
|
{
|
|
frame->voie = 1;
|
|
frame->message = 9;
|
|
frame->sm_type = r2000->subscriber.type;
|
|
frame->sm_relais = r2000->subscriber.relais;
|
|
frame->sm_mor = r2000->subscriber.mor;
|
|
|
|
if (r2000->tx_frame_count == 1)
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, "Sending release towards station mobile\n");
|
|
}
|
|
|
|
static void timeout_release_cc(r2000_t *r2000)
|
|
{
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, "Done sending release, going idle\n");
|
|
|
|
r2000_go_idle(r2000);
|
|
}
|
|
|
|
static void tx_release_tc(r2000_t *r2000, frame_t *frame)
|
|
{
|
|
frame->voie = 0;
|
|
frame->message = 24;
|
|
frame->sm_type = r2000->subscriber.type;
|
|
frame->sm_relais = r2000->subscriber.relais;
|
|
frame->sm_mor = r2000->subscriber.mor;
|
|
|
|
if (r2000->tx_frame_count == 1)
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, "Sending release towards station mobile\n");
|
|
|
|
}
|
|
|
|
static void timeout_release_tc(r2000_t *r2000)
|
|
{
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, "Timeout while sending release, going idle\n");
|
|
|
|
r2000_go_idle(r2000);
|
|
}
|
|
|
|
/* FSK processing requests next frame after transmission of previous
|
|
frame has been finished. */
|
|
const char *r2000_get_frame(r2000_t *r2000)
|
|
{
|
|
frame_t frame;
|
|
const char *bits;
|
|
int debug = 1;
|
|
|
|
r2000->tx_frame_count++;
|
|
|
|
memset(&frame, 0, sizeof(frame));
|
|
frame.channel = r2000->sender.kanal;
|
|
frame.relais = r2000->sysinfo.relais;
|
|
frame.deport = r2000->sysinfo.deport;
|
|
frame.agi = r2000->sysinfo.agi;
|
|
frame.sm_power = r2000->sysinfo.sm_power;
|
|
frame.taxe = r2000->sysinfo.taxe;
|
|
|
|
switch (r2000->state) {
|
|
case STATE_IDLE:
|
|
case STATE_RECALL_WAIT:
|
|
tx_idle(r2000, &frame);
|
|
debug = 0;
|
|
break;
|
|
case STATE_INSCRIPTION:
|
|
tx_inscription(r2000, &frame);
|
|
break;
|
|
case STATE_OUT_ASSIGN:
|
|
case STATE_RECALL_ASSIGN:
|
|
tx_out_assign(r2000, &frame);
|
|
break;
|
|
case STATE_IN_ASSIGN:
|
|
tx_in_assign(r2000, &frame);
|
|
break;
|
|
case STATE_OUT_IDENT:
|
|
case STATE_RECALL_IDENT:
|
|
case STATE_IN_IDENT:
|
|
tx_ident(r2000, &frame);
|
|
break;
|
|
case STATE_OUT_DIAL1:
|
|
case STATE_OUT_DIAL2:
|
|
tx_out_dial(r2000, &frame);
|
|
break;
|
|
case STATE_SUSPEND:
|
|
tx_suspend(r2000, &frame);
|
|
break;
|
|
case STATE_IN_ALERT:
|
|
case STATE_OUT_ALERT:
|
|
case STATE_RECALL_ALERT:
|
|
tx_alert(r2000, &frame);
|
|
break;
|
|
case STATE_RELEASE_CC:
|
|
tx_release_cc(r2000, &frame);
|
|
break;
|
|
case STATE_RELEASE_TC:
|
|
tx_release_tc(r2000, &frame);
|
|
break;
|
|
default:
|
|
/* in case there is no handling, change to audio mode */
|
|
/* this should not happen, but prevents an endless loop
|
|
* when the DSP tries to get next frame. */
|
|
r2000_set_dsp_mode(r2000, DSP_MODE_AUDIO_TX_RX, -1);
|
|
}
|
|
|
|
/* frame sending aborted (e.g. due to audio) */
|
|
if (r2000->dsp_mode != DSP_MODE_FRAME)
|
|
return NULL;
|
|
|
|
bits = encode_frame(&frame, debug);
|
|
|
|
PDEBUG_CHAN(DR2000, DEBUG_DEBUG, "Sending frame %s.\n", r2000_frame_name(frame.message, REL_TO_SM));
|
|
return bits;
|
|
}
|
|
|
|
void r2000_receive_frame(r2000_t *r2000, const char *bits, double quality, double level)
|
|
{
|
|
frame_t frame;
|
|
int rc;
|
|
|
|
PDEBUG_CHAN(DDSP, DEBUG_INFO, "RX Level: %.0f%% Quality=%.0f\n", level * 100.0, quality * 100.0);
|
|
|
|
rc = decode_frame(&frame, bits);
|
|
if (rc < 0) {
|
|
PDEBUG_CHAN(DR2000, (r2000->sender.loopback) ? DEBUG_NOTICE : DEBUG_DEBUG, "Received invalid frame.\n");
|
|
return;
|
|
}
|
|
|
|
if (r2000->sender.loopback)
|
|
PDEBUG_CHAN(DR2000, DEBUG_NOTICE, "Received frame %s\n", r2000_frame_name(frame.message, REL_TO_SM));
|
|
else
|
|
PDEBUG_CHAN(DR2000, DEBUG_DEBUG, "Received frame %s\n", r2000_frame_name(frame.message, SM_TO_REL));
|
|
|
|
if (r2000->sender.loopback)
|
|
return;
|
|
|
|
/* release */
|
|
if (frame.message == 6 || frame.message == 24) {
|
|
if (r2000->state == STATE_IDLE)
|
|
return;
|
|
if (!match_voie(r2000, &frame, (frame.message < 16) ? 0 : 1))
|
|
return;
|
|
if (!match_channel(r2000, &frame))
|
|
return;
|
|
if (!match_relais(r2000, &frame))
|
|
return;
|
|
if (!match_subscriber(r2000, &frame))
|
|
return;
|
|
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, "Received release from station mobile\n");
|
|
|
|
if (r2000->callref) {
|
|
call_up_release(r2000->callref, CAUSE_NORMAL);
|
|
r2000->callref = 0;
|
|
}
|
|
r2000_go_idle(r2000);
|
|
return;
|
|
}
|
|
|
|
switch (r2000->state) {
|
|
case STATE_IDLE:
|
|
rx_idle(r2000, &frame);
|
|
break;
|
|
case STATE_OUT_IDENT:
|
|
case STATE_RECALL_IDENT:
|
|
case STATE_IN_IDENT:
|
|
rx_ident(r2000, &frame);
|
|
break;
|
|
case STATE_OUT_DIAL1:
|
|
rx_out_dial1(r2000, &frame);
|
|
break;
|
|
case STATE_OUT_DIAL2:
|
|
rx_out_dial2(r2000, &frame);
|
|
break;
|
|
case STATE_SUSPEND:
|
|
rx_suspend(r2000, &frame);
|
|
break;
|
|
case STATE_IN_ALERT:
|
|
case STATE_OUT_ALERT:
|
|
case STATE_RECALL_ALERT:
|
|
rx_alert(r2000, &frame);
|
|
break;
|
|
default:
|
|
PDEBUG_CHAN(DR2000, DEBUG_DEBUG, "Dropping frame %s in state %s\n", r2000_frame_name(frame.message, SM_TO_REL), r2000_state_name(r2000->state));
|
|
}
|
|
}
|
|
|
|
void r2000_receive_super(r2000_t *r2000, uint8_t super, double quality, double level)
|
|
{
|
|
uint8_t nconv, relais;
|
|
|
|
/* invert, if received from base station */
|
|
if (r2000->sender.loopback)
|
|
super ^= 0x7f;
|
|
|
|
/* decode supervisory digit (nconv is LSB first) */
|
|
nconv = ((super >> 2) & 0x01)
|
|
| (super & 0x02)
|
|
| ((super << 2) & 0x04);
|
|
relais = ((super >> 6) & 0x01)
|
|
| ((super >> 4) & 0x02)
|
|
| ((super >> 2) & 0x04)
|
|
| (super & 0x08);
|
|
|
|
PDEBUG_CHAN(DDSP, DEBUG_INFO, "RX Supervisory: NCONV: %d Relais (4 lowest bits): %d RX Level: %.0f%% Quality=%.0f\n", nconv, relais, level * 100.0, quality * 100.0);
|
|
|
|
if (r2000->sender.loopback)
|
|
return;
|
|
if (r2000->state != STATE_ACTIVE)
|
|
return;
|
|
|
|
if (relais != (r2000->sysinfo.relais & 0xf)
|
|
|| nconv != r2000->sysinfo.nconv)
|
|
return;
|
|
|
|
/* unmute RX audio if not already */
|
|
r2000_set_dsp_mode(r2000, DSP_MODE_AUDIO_TX_RX, -1);
|
|
|
|
/* reset supervisory timer */
|
|
timer_start(&r2000->timer, SUPER_TIME2);
|
|
}
|
|
|
|
/* Timeout handling */
|
|
static void r2000_timeout(struct timer *timer)
|
|
{
|
|
r2000_t *r2000 = (r2000_t *)timer->priv;
|
|
|
|
switch (r2000->state) {
|
|
case STATE_OUT_IDENT:
|
|
timeout_out_ident(r2000);
|
|
break;
|
|
case STATE_IN_IDENT:
|
|
case STATE_RECALL_IDENT:
|
|
timeout_in_ident(r2000);
|
|
break;
|
|
case STATE_OUT_DIAL1:
|
|
timeout_out_dial1(r2000);
|
|
break;
|
|
case STATE_OUT_DIAL2:
|
|
timeout_out_dial2(r2000);
|
|
break;
|
|
case STATE_SUSPEND:
|
|
timeout_suspend(r2000);
|
|
break;
|
|
case STATE_IN_ALERT:
|
|
case STATE_OUT_ALERT:
|
|
case STATE_RECALL_ALERT:
|
|
timeout_alert(r2000);
|
|
break;
|
|
case STATE_ACTIVE:
|
|
timeout_active(r2000);
|
|
break;
|
|
case STATE_RELEASE_CC:
|
|
timeout_release_cc(r2000);
|
|
break;
|
|
case STATE_RELEASE_TC:
|
|
timeout_release_tc(r2000);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* call states received from call control
|
|
*/
|
|
|
|
/* Call control starts call towards station mobile. */
|
|
int call_down_setup(int callref, const char __attribute__((unused)) *caller_id, enum number_type __attribute__((unused)) caller_type, const char *dialing)
|
|
{
|
|
sender_t *sender;
|
|
r2000_t *r2000, *tc;
|
|
r2000_subscriber_t subscr;
|
|
|
|
memset(&subscr, 0, sizeof(subscr));
|
|
|
|
/* 1. convert number to station mobile identification, return INVALNUMBER */
|
|
if (string2subscriber(dialing, &subscr)) {
|
|
PDEBUG(DR2000, DEBUG_NOTICE, "Outgoing call to invalid number '%s', rejecting!\n", dialing);
|
|
return -CAUSE_INVALNUMBER;
|
|
}
|
|
|
|
/* 2. check if given number is already in a call, return BUSY */
|
|
for (sender = sender_head; sender; sender = sender->next) {
|
|
r2000 = (r2000_t *) sender;
|
|
if (r2000->state != STATE_IDLE
|
|
&& r2000->subscriber.relais == subscr.relais
|
|
&& r2000->subscriber.mor == subscr.mor)
|
|
break;
|
|
}
|
|
if (sender) {
|
|
PDEBUG(DR2000, DEBUG_NOTICE, "Outgoing call to busy number, rejecting!\n");
|
|
return -CAUSE_BUSY;
|
|
}
|
|
|
|
/* 3. check if all paging (control) channels are busy, return NOCHANNEL */
|
|
r2000 = get_free_chan(CHAN_TYPE_CC);
|
|
if (!r2000) {
|
|
PDEBUG(DR2000, DEBUG_NOTICE, "Outgoing call, but no free control channel, rejecting!\n");
|
|
return -CAUSE_NOCHANNEL;
|
|
}
|
|
tc = get_free_chan(CHAN_TYPE_TC);
|
|
if (!tc) {
|
|
PDEBUG(DR2000, DEBUG_NOTICE, "Outgoing call, but no free traffic channel, rejecting!\n");
|
|
return -CAUSE_NOCHANNEL;
|
|
}
|
|
|
|
PDEBUG(DR2000, DEBUG_INFO, "Call to station mobile, paging station id '%s'\n", print_subscriber_subscr(&subscr));
|
|
|
|
/* 4. trying to page station mobile */
|
|
memcpy(&r2000->subscriber, &subscr, sizeof(r2000_subscriber_t));
|
|
r2000->callref = callref;
|
|
r2000_page(r2000, PAGE_TRIES, STATE_IN_ASSIGN);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Call control answers call toward station mobile. */
|
|
void call_down_answer(int callref)
|
|
{
|
|
sender_t *sender;
|
|
r2000_t *r2000;
|
|
|
|
for (sender = sender_head; sender; sender = sender->next) {
|
|
r2000 = (r2000_t *) sender;
|
|
if (r2000->callref == callref)
|
|
break;
|
|
}
|
|
if (!sender) {
|
|
PDEBUG(DR2000, DEBUG_NOTICE, "Outgoing answer, but no callref!\n");
|
|
call_up_release(callref, CAUSE_INVALCALLREF);
|
|
return;
|
|
}
|
|
|
|
switch (r2000->state) {
|
|
case STATE_RECALL_WAIT:
|
|
PDEBUG_CHAN(DR2000, DEBUG_INFO, "Call has been answered by network, recalling station mobile.\n");
|
|
r2000_page(r2000, PAGE_TRIES, STATE_RECALL_ASSIGN);
|
|
call_tone_recall(callref, 1);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Call control sends disconnect (with tones).
|
|
* An active call stays active, so tones and annoucements can be received
|
|
* by station mobile.
|
|
*/
|
|
void call_down_disconnect(int callref, int __attribute__((unused)) cause)
|
|
{
|
|
sender_t *sender;
|
|
r2000_t *r2000;
|
|
|
|
PDEBUG(DR2000, DEBUG_INFO, "Call has been disconnected by network.\n");
|
|
|
|
for (sender = sender_head; sender; sender = sender->next) {
|
|
r2000 = (r2000_t *) sender;
|
|
if (r2000->callref == callref)
|
|
break;
|
|
}
|
|
if (!sender) {
|
|
PDEBUG(DR2000, DEBUG_NOTICE, "Outgoing disconnect, but no callref!\n");
|
|
call_up_release(callref, CAUSE_INVALCALLREF);
|
|
return;
|
|
}
|
|
|
|
/* Release when not active and not waiting for answer */
|
|
if (r2000->state == STATE_ACTIVE)
|
|
return;
|
|
switch (r2000->state) {
|
|
default:
|
|
PDEBUG_CHAN(DR2000, DEBUG_NOTICE, "Outgoing disconnect, during call setup, releasing!\n");
|
|
r2000->callref = 0;
|
|
r2000_release(r2000);
|
|
break;
|
|
}
|
|
|
|
call_up_release(callref, cause);
|
|
}
|
|
|
|
/* Call control releases call toward station mobile. */
|
|
void call_down_release(int callref, int __attribute__((unused)) cause)
|
|
{
|
|
sender_t *sender;
|
|
r2000_t *r2000;
|
|
|
|
PDEBUG(DR2000, DEBUG_INFO, "Call has been released by network, releasing call.\n");
|
|
|
|
for (sender = sender_head; sender; sender = sender->next) {
|
|
r2000 = (r2000_t *) sender;
|
|
if (r2000->callref == callref)
|
|
break;
|
|
}
|
|
if (!sender) {
|
|
PDEBUG(DR2000, DEBUG_NOTICE, "Outgoing release, but no callref!\n");
|
|
/* don't send release, because caller already released */
|
|
return;
|
|
}
|
|
|
|
r2000->callref = 0;
|
|
|
|
switch (r2000->state) {
|
|
case STATE_ACTIVE:
|
|
PDEBUG_CHAN(DR2000, DEBUG_NOTICE, "Outgoing release, during ringing, releasing!\n");
|
|
r2000_release(r2000);
|
|
break;
|
|
default:
|
|
PDEBUG_CHAN(DR2000, DEBUG_NOTICE, "Outgoing release, during call setup, releasing!\n");
|
|
r2000_release(r2000);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Receive audio from call instance. */
|
|
void call_down_audio(int callref, sample_t *samples, int count)
|
|
{
|
|
sender_t *sender;
|
|
r2000_t *r2000;
|
|
|
|
for (sender = sender_head; sender; sender = sender->next) {
|
|
r2000 = (r2000_t *) sender;
|
|
if (r2000->callref == callref)
|
|
break;
|
|
}
|
|
if (!sender)
|
|
return;
|
|
|
|
if (r2000->dsp_mode == DSP_MODE_AUDIO_TX
|
|
|| r2000->dsp_mode == DSP_MODE_AUDIO_TX_RX) {
|
|
sample_t up[(int)((double)count * r2000->sender.srstate.factor + 0.5) + 10];
|
|
if (r2000->compandor)
|
|
compress_audio(&r2000->cstate, samples, count);
|
|
count = samplerate_upsample(&r2000->sender.srstate, samples, count, up);
|
|
jitter_save(&r2000->sender.dejitter, up, count);
|
|
}
|
|
}
|
|
|
|
void dump_info(void) {}
|
|
|