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comparison rvinterf/asyncshell/tchplay.c @ 1029:333015c662bc

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fc-shell: tch play implemented
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 31 May 2016 01:53:04 +0000
parents
children 194967e11b2b
comparison
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1028:71bbddbcc6a1 1029:333015c662bc
1 /*
2 * TCH uplink play-from-file functionality
3 */
4
5 #include <sys/types.h>
6 #include <stdio.h>
7 #include <string.h>
8 #include <strings.h>
9 #include <stdlib.h>
10 #include "pktmux.h"
11 #include "tch_feature.h"
12
13 extern u_char rvi_msg[];
14 extern int rvi_msg_len;
15
16 extern void async_msg_output();
17
18 static FILE *gsm_data_file;
19 static int queued_frames;
20
21 #define QUEUE_LIMIT 3
22
23 static void
24 sync_msgout(msg)
25 char *msg;
26 {
27 printf("%s\n", msg);
28 }
29
30 static void
31 fill_uplink(msgout)
32 void (*msgout)();
33 {
34 u_char sendpkt[35];
35 int cc;
36
37 sendpkt[0] = RVT_TCH_HEADER;
38 sendpkt[1] = TCH_ULBITS_REQ;
39 while (queued_frames < QUEUE_LIMIT) {
40 cc = fread(sendpkt + 2, 1, 33, gsm_data_file);
41 if (cc < 33) {
42 if (cc)
43 msgout("TCH UL: extra bytes at the end of the file");
44 msgout("TCH UL: file play finished");
45 gsm_data_file = 0;
46 return;
47 }
48 send_pkt_to_target(sendpkt, 35);
49 queued_frames++;
50 }
51 }
52
53 void
54 tch_ulbits_conf()
55 {
56 if (queued_frames > 0)
57 queued_frames--;
58 if (gsm_data_file)
59 fill_uplink(async_msg_output);
60 }
61
62 static void
63 cmd_tch_play_start(filename)
64 char *filename;
65 {
66 if (gsm_data_file) {
67 printf("error: tch play session already in progress\n");
68 return;
69 }
70 gsm_data_file = fopen(filename, "r");
71 if (!gsm_data_file) {
72 perror(filename);
73 return;
74 }
75 printf("Starting TCH UL play from file\n");
76 tch_rx_control(1);
77 fill_uplink(sync_msgout);
78 }
79
80 static void
81 cmd_tch_play_stop()
82 {
83 if (!gsm_data_file) {
84 printf("error: no tch play session in progress\n");
85 return;
86 }
87 fclose(gsm_data_file);
88 gsm_data_file = 0;
89 printf("TCH UL play from file terminated\n");
90 }
91
92 void
93 cmd_tch_play(argc, argv)
94 char **argv;
95 {
96 if (argc < 2) {
97 printf("error: too few arguments\n");
98 return;
99 }
100 if (strcmp(argv[1], "stop"))
101 cmd_tch_play_start(argv[1]);
102 else
103 cmd_tch_play_stop();
104 }
105
106 void
107 show_tch_play_status()
108 {
109 printf("TCH UL play from file: %s\n",
110 gsm_data_file ? "RUNNING" : "not running");
111 printf("Outstanding UL frames: %d\n", queued_frames);
112 }