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Radio: Add option to change volume of transmission/reception

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This commit is contained in:
Andreas Eversberg
2019-07-05 21:50:24 +02:00
parent 1eac087935
commit 41ee8239df
3 changed files with 33 additions and 3 deletions
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9
src/radio/main.c
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@@ -63,6 +63,7 @@ static double bandwidth = 0.0;
static double deviation = 75000.0;
static double modulation_index = 1.0;
static double time_constant_us = 50.0;
static double volume = 1.0;
static int stereo = 0;
static int rds = 0;
static int rds2 = 0;
@@ -138,6 +139,8 @@ void print_help(const char *arg0)
printf(" modulation. Give 0 to disbale. (default = %.0f uS)\n", time_constant_us);
printf(" VHF broadcast 50 uS in Europe and 75 uS in the United States.\n");
printf(" Other radio FM should use 530 uS, to cover complete speech spectrum.\n");
printf(" -V --volume %.3f\n", volume);
printf(" Change volume of radio side. (Gains transmission, dampens reception)\n");
printf(" -S --stereo\n");
printf(" Enables stereo carrier for frequency modulated UHF broadcast.\n");
printf(" It uses the 'Pilot-tone' system.\n");
@@ -169,6 +172,7 @@ static void add_options(void)
option_add('D', "deviation", 1);
option_add('I', "modulation-index", 1);
option_add('E', "emphasis", 1);
option_add('V', "volume", 1);
option_add('S', "stereo", 0);
option_add(OPT_FAST_MATH, "fast-math", 0);
option_add(OPT_LIMESDR, "limesdr", 0);
@@ -238,6 +242,9 @@ static int handle_options(int short_option, int argi, char **argv)
case 'E':
time_constant_us = atof(argv[argi]);
break;
case 'V':
volume = atof(argv[argi]);
break;
case 'S':
stereo = 1;
break;
@@ -348,7 +355,7 @@ int main(int argc, char *argv[])
/* now we have latency and sample rate */
latspl = samplerate * latency / 1000;
rc = radio_init(&radio, latspl, samplerate, tx_wave_file, rx_wave_file, (tx) ? tx_audiodev : NULL, (rx) ? rx_audiodev : NULL, modulation, bandwidth, deviation, modulation_index, time_constant_us, stereo, rds, rds2);
rc = radio_init(&radio, latspl, samplerate, tx_wave_file, rx_wave_file, (tx) ? tx_audiodev : NULL, (rx) ? rx_audiodev : NULL, modulation, bandwidth, deviation, modulation_index, time_constant_us, volume, stereo, rds, rds2);
if (rc < 0) {
fprintf(stderr, "Failed to initialize radio with given options, exitting!\n");
exit(0);