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common: Add pre and de emphasis, if the radio does not support it

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Connect to the oscillator of the transmitter - good girl!
You need to enable pre emphasis in this case.

Connect to the discriminator of the receiver - good boy!
You need to enable de emphasis in this case.
This commit is contained in:
Andreas Eversberg
2016-04-23 18:50:11 +02:00
parent 5062628e52
commit 4356c93afa
20 changed files with 256 additions and 19 deletions
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20
src/common/main_common.c
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@@ -36,6 +36,8 @@ int use_mncc_sock = 0;
int send_patterns = 1;
int loopback = 0;
int rt_prio = 0;
int do_pre_emphasis = 0;
int do_de_emphasis = 0;
const char *read_wave = NULL;
const char *write_wave = NULL;
@@ -66,6 +68,12 @@ void print_help_common(const char *arg0, const char *ext_usage)
printf(" Loopback test: 1 = internal | 2 = external | 3 = echo\n");
printf(" -r --realtime <prio>\n");
printf(" Set prio: 0 to diable, 99 for maximum (default = %d)\n", rt_prio);
printf(" -E --pre-emphasis\n");
printf(" Enable pre-emphasis, if you directly connect to the oscillator of the\n");
printf(" transmitter. (No pre-emphasis done by the transmitter.)\n");
printf(" -e --de-emphasis\n");
printf(" Enable de-emphasis, if you directly connect to the discriminator of\n");
printf(" the receiver. (No de-emphasis done by the receiver.)\n");
printf(" -W --write-wave <file>\n");
printf(" Write received audio to given wav audio file.\n");
printf(" -R --read-wave <file>\n");
@@ -84,12 +92,14 @@ static struct option long_options_common[] = {
{"send-patterns", 0, 0, 'p'},
{"loopback", 1, 0, 'L'},
{"realtime", 1, 0, 'r'},
{"pre-emphasis", 0, 0, 'E'},
{"de-emphasis", 0, 0, 'e'},
{"write-wave", 1, 0, 'W'},
{"read-wave", 1, 0, 'R'},
{0, 0, 0, 0}
};
const char *optstring_common = "hD:k:d:s:c:l:mp:L:r:W:R:";
const char *optstring_common = "hD:k:d:s:c:l:mp:L:r:EeW:R:";
struct option *long_options;
char *optstring;
@@ -159,6 +169,14 @@ void opt_switch_common(int c, char *arg0, int *skip_args)
rt_prio = atoi(optarg);
*skip_args += 2;
break;
case 'E':
do_pre_emphasis = 1;
*skip_args += 1;
break;
case 'e':
do_de_emphasis = 1;
*skip_args += 1;
break;
case 'W':
write_wave = strdup(optarg);
*skip_args += 2;