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Implementation of C-Netz (German mobile telephone system)

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This commit is contained in:
Andreas Eversberg
2016-02-16 18:56:55 +01:00
parent 4b3e3385b5
commit 16acdbf59d
28 changed files with 10428 additions and 12 deletions
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24
src/common/sender.c
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@@ -30,6 +30,7 @@
sender_t *sender_head = NULL;
static sender_t **sender_tailp = &sender_head;
int cant_recover = 0;
/* Init transceiver instance and link to list of transceivers. */
int sender_create(sender_t *sender, const char *sounddev, int samplerate, int pre_emphasis, int de_emphasis, const char *write_wave, const char *read_wave, int kanal, int loopback, double loss_volume, int use_pilot_signal)
@@ -139,7 +140,7 @@ static void gen_pilotton(sender_t *sender, int16_t *samples, int length)
}
/* Handle audio streaming of one transceiver. */
void process_sender(sender_t *sender, int latspl)
void process_sender(sender_t *sender, int *quit, int latspl)
{
int16_t samples[latspl], pilot[latspl];
int rc, count;
@@ -147,8 +148,15 @@ void process_sender(sender_t *sender, int latspl)
count = sound_get_inbuffer(sender->sound);
if (count < 0) {
PDEBUG(DSENDER, DEBUG_ERROR, "Failed to get samples in buffer (rc = %d)!\n", count);
if (count == -EPIPE)
if (count == -EPIPE) {
if (cant_recover) {
cant_recover:
PDEBUG(DSENDER, DEBUG_ERROR, "Cannot recover due to measurements, quitting!\n");
*quit = 1;
return;
}
PDEBUG(DSENDER, DEBUG_ERROR, "Trying to recover!\n");
}
return;
}
if (count < latspl) {
@@ -189,8 +197,11 @@ void process_sender(sender_t *sender, int latspl)
}
if (rc < 0) {
PDEBUG(DSENDER, DEBUG_ERROR, "Failed to write TX data to sound device (rc = %d)\n", rc);
if (rc == -EPIPE)
if (rc == -EPIPE) {
if (cant_recover)
goto cant_recover;
PDEBUG(DSENDER, DEBUG_ERROR, "Trying to recover!\n");
}
return;
}
if (sender->loopback == 1) {
@@ -204,8 +215,11 @@ void process_sender(sender_t *sender, int latspl)
//printf("count=%d time= %.4f\n", count, (double)count * 1000 / sender->samplerate);
if (count < 0) {
PDEBUG(DSENDER, DEBUG_ERROR, "Failed to read from sound device (rc = %d)!\n", count);
if (count == -EPIPE)
if (count == -EPIPE) {
if (cant_recover)
goto cant_recover;
PDEBUG(DSENDER, DEBUG_ERROR, "Trying to recover!\n");
}
return;
}
if (count) {
@@ -236,7 +250,7 @@ void main_loop(int *quit, int latency)
sender = sender_head;
while (sender) {
latspl = sender->samplerate * latency / 1000;
process_sender(sender, latspl);
process_sender(sender, quit, latspl);
sender = sender->next;
}