static void kradpulse_capture_cb(pa_stream *stream, size_t length, void *userdata) {
krad_pulse_t *kradpulse = (krad_pulse_t *)userdata;
pa_usec_t usec;
int neg;
const void *samples;
int c, s;
pa_stream_get_latency(stream, &usec, &neg);
//printf(" latency %8d us wanted %d frames\n", (int)usec, length / 4 / 2 );
pa_stream_peek(stream, &samples, &length);
if ((krad_ringbuffer_write_space (kradpulse->kradaudio->input_ringbuffer[1]) >= length / 2 ) && (krad_ringbuffer_write_space (kradpulse->kradaudio->input_ringbuffer[0]) >= length / 2 )) {
memcpy(kradpulse->capture_interleaved_samples, samples, length);
pa_stream_drop(stream);
for (s = 0; s < length / 4 / 2; s++) {
for (c = 0; c < 2; c++) {
kradpulse->capture_samples[c][s] = kradpulse->capture_interleaved_samples[s * 2 + c];
}
}
for (c = 0; c < 2; c++) {
krad_ringbuffer_write (kradpulse->kradaudio->input_ringbuffer[c], (char *)kradpulse->capture_samples[c], (length / 2) );
}
for (c = 0; c < 2; c++) {
compute_peak(kradpulse->kradaudio, KINPUT, &kradpulse->capture_interleaved_samples[c], c, length / 4 / 2 , 1);
}
}
if (kradpulse->kradaudio->process_callback != NULL) {
kradpulse->kradaudio->process_callback(length / 4 / 2, kradpulse->kradaudio->userdata);
}
}
static void *krad_transmitter_transmission_thread (void *arg) {
krad_transmission_t *krad_transmission = (krad_transmission_t *)arg;
krad_system_set_thread_name ("kr_tx_txmtr");
int r;
int e;
int ret;
int wait_time;
uint64_t last_position;
uint32_t new_bytes_avail;
uint32_t space_avail;
uint32_t drop_count;
krad_transmission_receiver_t *krad_transmission_receiver;
r = 0;
e = 0;
ret = 0;
wait_time = 2;
last_position = 0;
new_bytes_avail = 0;
space_avail = 0;
drop_count = 0;
krad_transmission_receiver = NULL;
printk ("Krad Transmitter: transmission thread starting for %s", krad_transmission->sysname);
while (krad_transmission->active == 1) {
if (krad_transmission->new_data == 1) {
if (krad_transmission->new_sync_point == 1) {
krad_transmission->sync_point = krad_transmission->position;
krad_transmission->new_sync_point = 0;
}
space_avail = krad_ringbuffer_write_space (krad_transmission->transmission_ringbuffer);
new_bytes_avail = krad_ringbuffer_read_space (krad_transmission->ringbuffer);
if (space_avail < new_bytes_avail) {
drop_count = new_bytes_avail - space_avail;
krad_ringbuffer_read_advance (krad_transmission->transmission_ringbuffer, drop_count);
}
krad_ringbuffer_read (krad_transmission->ringbuffer,
(char *)krad_transmission->transmission_buffer,
new_bytes_avail);
krad_ringbuffer_write (krad_transmission->transmission_ringbuffer,
(char *)krad_transmission->transmission_buffer,
new_bytes_avail);
krad_transmission->position += new_bytes_avail;
if (krad_transmission->position > DEFAULT_RING_SIZE) {
krad_transmission->horizon = krad_transmission->position - DEFAULT_RING_SIZE;
}
krad_ringbuffer_get_read_vector (krad_transmission->transmission_ringbuffer,
&krad_transmission->tx_vec[0]);
krad_transmission->new_data = 0;
}
ret = epoll_wait (krad_transmission->connections_efd, krad_transmission->transmission_events,
KRAD_TRANSMITTER_MAXEVENTS, wait_time);
if (ret < 0) {
if ((ret < 0) && (errno == EINTR)) {
continue;
}
printke ("Krad Transmitter: Failed on epoll wait %s", strerror(errno));
krad_transmission->active = 2;
break;
}
if (ret > 0) {
for (e = 0; e < ret; e++) {
krad_transmission_receiver =
(krad_transmission_receiver_t *)krad_transmission->transmission_events[e].data.ptr;
if (krad_transmission_receiver->noob == 1) {
krad_transmission_receiver->noob = 0;
krad_transmission->receivers++;
}
if ((krad_transmission->transmission_events[e].events & EPOLLERR) ||
(krad_transmission->transmission_events[e].events & EPOLLHUP) ||
(krad_transmission->transmission_events[e].events & EPOLLHUP)) {
if (krad_transmission->transmission_events[e].events & EPOLLHUP) {
printke ("Krad Transmitter: transmitter transmission receiver connection hangup");
}
if (krad_transmission->transmission_events[e].events & EPOLLERR) {
printke ("Krad Transmitter: transmitter transmission receiver connection error");
}
if (krad_transmission->transmission_events[e].events & EPOLLHUP) {
printk ("Krad Transmitter: client disconnected %d", krad_transmission_receiver->fd);
}
krad_transmitter_receiver_destroy (krad_transmission_receiver);
continue;
}
if (krad_transmission->transmission_events[e].events & EPOLLOUT) {
krad_transmitter_transmission_transmit (krad_transmission, krad_transmission_receiver);
}
}
}
if ((last_position != krad_transmission->position) && (krad_transmission->ready_receiver_count > 0)) {
last_position = krad_transmission->position;
for (r = 0; r < TOTAL_RECEIVERS; r++) {
if ((krad_transmission->krad_transmitter->krad_transmission_receivers[r].krad_transmission == krad_transmission) && (krad_transmission->krad_transmitter->krad_transmission_receivers[r].active == 1) && (krad_transmission->krad_transmitter->krad_transmission_receivers[r].ready == 1)) {
krad_transmission_receiver = &krad_transmission->krad_transmitter->krad_transmission_receivers[r];
krad_transmitter_transmission_transmit (krad_transmission, krad_transmission_receiver);
}
}
}
}
krad_transmission->active = 3;
printk ("Krad Transmitter: transmission thread exiting for %s", krad_transmission->sysname);
return NULL;
}
