radio95/fm95
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stereoize rds2

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This commit is contained in:
KubaPro010
2025-03-22 20:47:48 +01:00
parent 424ece55a3
commit 29e285adf4
2 changed files with 21 additions and 61 deletions
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2
.vscode/.server-controller-port.log vendored
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@@ -1,5 +1,5 @@
{
"port": 13452,
"time": 1742563941525,
"time": 1742672637302,
"version": "0.0.3"
}

80
src/fm95.c
View File

@@ -70,8 +70,7 @@ void show_help(char *name) {
" -i,--input Override input device [default: %s]\n"
" -o,--output Override output device [default: %s]\n"
" -M,--mpx Override MPX input device [default: %s]\n"
" -r,--rds Override RDS input device [default: %s]\n"
" -T,--rds2 Override RDS2 input device [default: %s]\n"
" -r,--rds Override RDS95 input device [default: %s]\n"
" -C,--sca Override the SCA input device [default: %s]\n"
" -f,--sca_freq Override the SCA frequency [default: %.1f]\n"
" -F,--sca_dev Override the SCA deviation [default: %.2f]\n"
@@ -122,7 +121,6 @@ int main(int argc, char **argv) {
pa_simple *mpx_device = NULL;
pa_simple *rds_device = NULL;
pa_simple *rds2_device = NULL;
pa_simple *sca_device = NULL;
pa_simple *input_device;
@@ -148,11 +146,6 @@ int main(int argc, char **argv) {
#else
char audio_rds_device[64] = RDS_DEVICE;
#endif
#ifndef RDS2_DEVICE
char audio_rds2_device[64] = "\0";
#else
char audio_rds2_device[64] = RDS2_DEVICE;
#endif
#ifndef SCA_DEVICE
char audio_sca_device[64] = "\0";
#else
@@ -168,7 +161,7 @@ int main(int argc, char **argv) {
// #region Parse Arguments
int opt;
const char *short_opt = "s::i:o:M:r:T:C:f:F:L:c:P::R:VA:v:h";
const char *short_opt = "s::i:o:M:r:C:f:F:L:c:P::R:VA:v:h";
struct option long_opt[] =
{
{"stereo", optional_argument, NULL, 's'},
@@ -176,7 +169,6 @@ int main(int argc, char **argv) {
{"output", required_argument, NULL, 'o'},
{"mpx", required_argument, NULL, 'M'},
{"rds", required_argument, NULL, 'r'},
{"rds2", required_argument, NULL, 'T'},
{"sca", required_argument, NULL, 'C'},
{"sca_freq", required_argument, NULL, 'f'},
{"sca_dev", required_argument, NULL, 'F'},
@@ -213,9 +205,6 @@ int main(int argc, char **argv) {
case 'r': // RDS in
memcpy(audio_rds_device, optarg, 63);
break;
case 'T': // RDS2 in
memcpy(audio_rds2_device, optarg, 63);
break;
case 'C': //SCA in
memcpy(audio_sca_device, optarg, 63);
break;
@@ -259,7 +248,6 @@ int main(int argc, char **argv) {
int mpx_on = (strlen(audio_mpx_device) != 0);
int rds_on = (strlen(audio_rds_device) != 0);
int rds2_on = (rds_on && strlen(audio_rds2_device) != 0);
int sca_on = (strlen(audio_sca_device) != 0);
// #region Setup devices
@@ -327,7 +315,7 @@ int main(int argc, char **argv) {
}
}
if(rds_on) {
printf("Connecting to RDS device... (%s)\n", audio_rds_device);
printf("Connecting to RDS95 device... (%s)\n", audio_rds_device);
rds_device = pa_simple_new(
NULL,
@@ -335,7 +323,7 @@ int main(int argc, char **argv) {
PA_STREAM_RECORD,
audio_rds_device,
"RDS Input",
&mono_format,
&stereo_format,
NULL,
&input_buffer_atr,
&opentime_pulse_error
@@ -347,28 +335,7 @@ int main(int argc, char **argv) {
return 1;
}
}
if(rds2_on) {
printf("Connecting to RDS2 device... (%s)\n", audio_rds2_device);
rds2_device = pa_simple_new(
NULL,
"fm95",
PA_STREAM_RECORD,
audio_rds2_device,
"RDS2 Input",
&mono_format,
NULL,
&input_buffer_atr,
&opentime_pulse_error
);
if (!rds2_device) {
fprintf(stderr, "Error: cannot open RDS device: %s\n", pa_strerror(opentime_pulse_error));
pa_simple_free(input_device);
if(mpx_on) pa_simple_free(mpx_device);
if(rds_on) pa_simple_free(rds_device);
return 1;
}
}
if(sca_on) {
printf("Connecting to SCA device... (%s)\n", audio_sca_device);
@@ -388,7 +355,6 @@ int main(int argc, char **argv) {
pa_simple_free(input_device);
if(mpx_on) pa_simple_free(mpx_device);
if(rds_on) pa_simple_free(rds_device);
if(rds2_on) pa_simple_free(rds2_device);
return 1;
}
}
@@ -411,7 +377,6 @@ int main(int argc, char **argv) {
pa_simple_free(input_device);
if(mpx_on) pa_simple_free(mpx_device);
if(rds_on) pa_simple_free(rds_device);
if(rds2_on) pa_simple_free(rds2_device);
if(sca_on) pa_simple_free(sca_device);
return 1;
}
@@ -440,7 +405,6 @@ int main(int argc, char **argv) {
pa_simple_free(input_device);
if(mpx_on) pa_simple_free(mpx_device);
if(rds_on) pa_simple_free(rds_device);
if(rds2_on) pa_simple_free(rds2_device);
if(sca_on) pa_simple_free(sca_device);
pa_simple_free(output_device);
return 0;
@@ -463,13 +427,15 @@ int main(int argc, char **argv) {
int pulse_error;
static float audio_stereo_input[BUFFER_SIZE*2]; // Input from device, interleaved stereo
static float mpx_in[BUFFER_SIZE] = {0}; // Input from MPX device
static float rds_in[BUFFER_SIZE] = {0}; // Input from RDS device
static float rds2_in[BUFFER_SIZE] = {0}; // Input from RDS2 device
static float sca_in[BUFFER_SIZE] = {0}; // Input from SCA device
static float left[BUFFER_SIZE], right[BUFFER_SIZE]; // Audio, same thing as in input but uninterleaved
static float output[BUFFER_SIZE]; // MPX, this goes to the output
float audio_stereo_input[BUFFER_SIZE*2];
float rds1_rds2_in[BUFFER_SIZE*2] = {0};
float rds1_in[BUFFER_SIZE] = {0};
float rds2_in[BUFFER_SIZE] = {0};
float mpx_in[BUFFER_SIZE] = {0};
float sca_in[BUFFER_SIZE] = {0};
float left[BUFFER_SIZE], right[BUFFER_SIZE];
float output[BUFFER_SIZE];
while (to_run) {
if (pa_simple_read(input_device, audio_stereo_input, sizeof(audio_stereo_input), &pulse_error) < 0) {
fprintf(stderr, "Error reading from input device: %s\n", pa_strerror(pulse_error));
@@ -485,18 +451,12 @@ int main(int argc, char **argv) {
}
}
if(rds_on) {
if (pa_simple_read(rds_device, rds_in, sizeof(rds_in), &pulse_error) < 0) {
fprintf(stderr, "Error reading from RDS device: %s\n", pa_strerror(pulse_error));
to_run = 0;
break;
}
}
if(rds2_on) {
if (pa_simple_read(rds2_device, rds2_in, sizeof(rds2_in), &pulse_error) < 0) {
fprintf(stderr, "Error reading from RDS2 device: %s\n", pa_strerror(pulse_error));
if (pa_simple_read(rds_device, rds1_rds2_in, sizeof(rds1_rds2_in), &pulse_error) < 0) {
fprintf(stderr, "Error reading from RDS95 device: %s\n", pa_strerror(pulse_error));
to_run = 0;
break;
}
uninterleave(rds1_rds2_in, rds1_in, rds2_in, BUFFER_SIZE*2);
}
if(sca_on) {
if (pa_simple_read(sca_device, sca_in, sizeof(sca_in), &pulse_error) < 0) {
@@ -510,7 +470,7 @@ int main(int argc, char **argv) {
float l_in = left[i];
float r_in = right[i];
float current_mpx_in = mpx_in[i];
float current_rds_in = rds_in[i];
float current_rds_in = rds1_in[i];
float current_rds2_in = rds2_in[i];
float current_sca_in = sca_in[i];
@@ -519,10 +479,10 @@ int main(int argc, char **argv) {
ready_l = hard_clip(ready_l*audio_volume, clipper_threshold);
ready_r = hard_clip(ready_r*audio_volume, clipper_threshold);
float mono = (ready_l + ready_r) / 2.0f; // Stereo to Mono
float mono = (ready_l + ready_r) / 2.0f;
output[i] = mono*MONO_VOLUME;
if(stereo) {
float stereo = (ready_l - ready_r) / 2.0f; // Also Stereo to Mono but a bit diffrent
float stereo = (ready_l - ready_r) / 2.0f;
float stereo_carrier = get_oscillator_sin_multiplier_ni(&osc, polar_stereo ? 1 : 2);
if(polar_stereo) {
@@ -536,7 +496,7 @@ int main(int argc, char **argv) {
if(rds_on && polar_stereo == 0) {
float rds_carrier = get_oscillator_sin_multiplier_ni(&osc, 3);
output[i] += (current_rds_in*rds_carrier)*RDS_VOLUME;
if(rds2_on && !sca_on) {
if(!sca_on) {
float rds2_carrier_66 = get_oscillator_cos_multiplier_ni(&osc, 3.5f); // 66.5 KHz
output[i] += (current_rds2_in*rds2_carrier_66)*RDS2_VOLUME;
}