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Code Issues Activity

add master volume and calibration mode (also, *bug on the last one)

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This commit is contained in:
KubaPro010
2025-01-31 15:35:09 +01:00
parent 09b30852ab
commit 0c9222393c
2 changed files with 48 additions and 4 deletions
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2
.vscode/.server-controller-port.log vendored
View File

@@ -1,5 +1,5 @@
{
"port": 13452,
"time": 1738158496504,
"time": 1738326357935,
"version": "0.0.3"
}

50
src/fm95.c
View File

@@ -38,6 +38,7 @@
#include <pulse/error.h>
#include <alsa/asoundlib.h>
#define MASTER_VOLUME 1.0f // Volume of everything combined
#define MONO_VOLUME 0.45f // L+R Signal
#define PILOT_VOLUME 0.09f // 19 KHz Pilot
#define STEREO_VOLUME 0.45f // L-R signal
@@ -88,6 +89,7 @@ void show_help(char *name) {
" -S,--ssb Force SSB [default: %d]\n"
" -D,--dsb Force DSB [default: %d]\n"
" -R,--preemp Override preemphasis [default: %.2f µs]\n"
" -V,--calibrate Enable Calibration mode [default: off]"
,name
,DEFAULT_STEREO^1
,DEFAULT_STEREO
@@ -152,6 +154,8 @@ int main(int argc, char **argv) {
int alsa_output = DEFAULT_ALSA_OUTPUT;
float preemphasis_tau = DEFAULT_PREEMPHASIS_TAU;
int calibration_mode = 0;
// #region Parse Arguments
int opt;
const char *short_opt = "msi:o:apM:C:f:F:L:c:l:PgSDR:hv";
@@ -174,7 +178,8 @@ int main(int argc, char **argv) {
{"ge", no_argument, NULL, 'g'},
{"ssb", no_argument, NULL, 'S'},
{"dsb", no_argument, NULL, 'D'},
{"preemp", no_argument, NULL, 'R'},
{"preemp", required_argument, NULL, 'R'},
{"calibrate", no_argument, NULL, 'V'},
{"help", no_argument, NULL, 'h'},
{"version", no_argument, NULL, 'v'},
@@ -397,6 +402,44 @@ int main(int argc, char **argv) {
}
}
// #endregion
if(calibration_mode) {
Oscillator osc;
init_oscillator(&osc, 400, SAMPLE_RATE);
signal(SIGINT, stop);
signal(SIGTERM, stop);
int pulse_error;
float output[BUFFER_SIZE]; // MPX, this goes to the output
while(to_run) {
for (int i = 0; i < BUFFER_SIZE; i++) {
output[i] = get_oscillator_sin_sample(&osc)*MASTER_VOLUME;
}
if(alsa_output == 0) {
if (pa_simple_write(output_device, output, sizeof(output), &pulse_error) < 0) {
fprintf(stderr, "Error writing to output device: %s\n", pa_strerror(pulse_error));
to_run = 0;
break;
}
} else {
snd_pcm_writei(output_handle, output, sizeof(output));
}
}
printf("Cleaning up...\n");
pa_simple_free(input_device);
if(strlen(audio_mpx_device) != 0) pa_simple_free(mpx_device);
if(strlen(audio_sca_device) != 0) pa_simple_free(sca_device);
if(alsa_output == 0) {
pa_simple_free(output_device);
} else {
snd_pcm_drain(output_handle);
snd_pcm_close(output_handle);
snd_pcm_hw_params_free(output_params);
}
return 0;
}
// #region Setup Filters/Modulaltors/Oscillators
Oscillator osc;
if(polar_stereo) {
@@ -435,8 +478,8 @@ int main(int argc, char **argv) {
int pulse_error;
float audio_stereo_input[BUFFER_SIZE*2]; // Input from device, interleaved stereo
float mpx_in[BUFFER_SIZE]; // Input from MPX device
float sca_in[BUFFER_SIZE]; // Input from SCA device
float mpx_in[BUFFER_SIZE] = {0}; // Input from MPX device
float sca_in[BUFFER_SIZE] = {0}; // Input from SCA device
float left[BUFFER_SIZE+64], right[BUFFER_SIZE+64]; // Audio, same thing as in input but uninterleaved, ai told be there could be a buffer overflow here
float output[BUFFER_SIZE]; // MPX, this goes to the output
while (to_run) {
@@ -522,6 +565,7 @@ int main(int argc, char **argv) {
}
if(strlen(audio_mpx_device) != 0) output[i] += current_mpx_in*MPX_VOLUME;
if(strlen(audio_sca_device) != 0) output[i] += modulate_fm(&sca_mod, hard_clip(current_sca_in, sca_clipper_threshold))*SCA_VOLUME;
output[i] *= MASTER_VOLUME;
}
if(alsa_output == 0) {