radio95/rds95
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This commit is contained in:
kuba
2025-03-11 17:36:35 +01:00
parent 6fce11d110
commit ce9ec1eab9
1 changed files with 27 additions and 24 deletions
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src/rds95.c
+25 -22
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@@ -12,10 +12,10 @@
#define NUM_MPX_FRAMES 512 #define NUM_MPX_FRAMES 512
static volatile uint8_t stop_rds; static uint8_t stop_rds;
static void stop() { static void stop() {
printf("Received a stopping signal\n"); printf("Received an stopping signal\n");
stop_rds = 1; stop_rds = 1;
} }
@@ -62,7 +62,6 @@ static void show_help(char *name) {
int main(int argc, char **argv) { int main(int argc, char **argv) {
char control_pipe[51] = "\0"; char control_pipe[51] = "\0";
struct rds_params_t rds_params = { struct rds_params_t rds_params = {
.ps = "radio95", .ps = "radio95",
.rt1 = "", .rt1 = "",
@@ -154,12 +153,21 @@ int main(int argc, char **argv) {
} }
} }
/* Initialize pthread stuff */
pthread_attr_init(&attr);
/* Gracefully stop the encoder on SIGINT or SIGTERM */
signal(SIGINT, stop);
signal(SIGTERM, stop);
/* Initialize the RDS modulator */
init_rds_encoder(rds_params);
/* PASIMPLE format */ /* PASIMPLE format */
format.format = PA_SAMPLE_FLOAT32NE; format.format = PA_SAMPLE_FLOAT32NE;
format.channels = 1; format.channels = 1;
format.rate = RDS_SAMPLE_RATE; format.rate = RDS_SAMPLE_RATE;
int pulse_error;
device = pa_simple_new( device = pa_simple_new(
NULL, // Default PulseAudio server NULL, // Default PulseAudio server
"rds95", // Application name "rds95", // Application name
@@ -169,35 +177,26 @@ int main(int argc, char **argv) {
&format, // Sample format &format, // Sample format
NULL, // Default channel map NULL, // Default channel map
NULL, // Default buffering attributes NULL, // Default buffering attributes
&pulse_error // Error variable NULL // Error variable
); );
if (device == NULL) { if (device == NULL) {
fprintf(stderr, "Error: cannot open sound device. (%s : %d)\n", pa_strerror(pulse_error), pulse_error); fprintf(stderr, "Error: cannot open sound device.\n");
return 1; goto exit;
} }
pthread_attr_init(&attr); /* Initialize the control pipe reader */
signal(SIGINT, stop);
signal(SIGTERM, stop);
init_rds_encoder(rds_params);
if (control_pipe[0]) { if (control_pipe[0]) {
if (open_control_pipe(control_pipe) == 0) { if (open_control_pipe(control_pipe) == 0) {
fprintf(stdout, "Reading control commands on %s.\n", control_pipe); fprintf(stderr, "Reading control commands on %s.\n", control_pipe);
/* Create control pipe polling worker */
int r; int r;
r = pthread_create(&control_pipe_thread, &attr, control_pipe_worker, NULL); r = pthread_create(&control_pipe_thread, &attr, control_pipe_worker, NULL);
if (r != 0) { if (r < 0) {
fprintf(stderr, "Could not create control pipe thread.\n"); fprintf(stderr, "Could not create control pipe thread.\n");
control_pipe[0] = 0; control_pipe[0] = 0;
goto exit;
pthread_attr_destroy(&attr);
exit_rds_encoder();
pa_simple_free(device);
return 1;
} else { } else {
fprintf(stdout, "Created control pipe thread.\n"); fprintf(stderr, "Created control pipe thread.\n");
} }
} else { } else {
fprintf(stderr, "Failed to open control pipe: %s.\n", control_pipe); fprintf(stderr, "Failed to open control pipe: %s.\n", control_pipe);
@@ -205,6 +204,8 @@ int main(int argc, char **argv) {
} }
} }
int pulse_error;
float mpx_buffer[NUM_MPX_FRAMES]; float mpx_buffer[NUM_MPX_FRAMES];
while(!stop_rds) { while(!stop_rds) {
@@ -218,11 +219,13 @@ int main(int argc, char **argv) {
} }
} }
exit:
if (control_pipe[0]) { if (control_pipe[0]) {
/* shut down threads */ /* shut down threads */
fprintf(stderr, "Waiting for pipe thread to shut down.\n"); fprintf(stderr, "Waiting for pipe thread to shut down.\n");
pthread_join(control_pipe_thread, NULL); pthread_join(control_pipe_thread, NULL);
} }
pthread_attr_destroy(&attr); pthread_attr_destroy(&attr);
exit_rds_encoder(); exit_rds_encoder();
pa_simple_free(device); pa_simple_free(device);