24 #include <semaphore.h>
25 #include <jack/jack.h>
38 #define FIFO_PACKETS_NUM 16
64 jack_nframes_t latency, cycle_delay;
73 cycle_delay = jack_frames_since_cycle_start(self->client);
77 av_gettime() / 1000000.0 - (
double) cycle_delay / self->sample_rate,
89 pkt_data = (
float *) pkt.
data;
93 for (i = 0; i <
self->nports; i++) {
94 latency += jack_port_get_total_latency(self->client, self->ports[i]);
95 buffer = jack_port_get_buffer(self->ports[i], self->buffer_size);
96 for (j = 0; j <
self->buffer_size; j++)
97 pkt_data[j * self->nports + i] = buffer[j];
101 pkt.
pts = (cycle_time - (double) latency / (self->nports * self->sample_rate)) * 1000000.0;
105 sem_post(&self->packet_count);
127 int test, pkt_size =
self->buffer_size *
self->nports *
sizeof(float);
145 jack_status_t status;
150 self->client = jack_client_open(context->
filename, JackNullOption, &status);
156 sem_init(&self->packet_count, 0, 0);
158 self->sample_rate = jack_get_sample_rate(self->client);
159 self->ports =
av_malloc(self->nports *
sizeof(*self->ports));
160 self->buffer_size = jack_get_buffer_size(self->client);
163 for (i = 0; i <
self->nports; i++) {
165 snprintf(str,
sizeof(str),
"input_%d", i + 1);
166 self->ports[i] = jack_port_register(self->client, str,
167 JACK_DEFAULT_AUDIO_TYPE,
169 if (!self->ports[i]) {
172 jack_client_close(self->client);
183 period = (double) self->buffer_size / self->sample_rate;
184 o = 2 *
M_PI * 1.5 * period;
185 self->timefilter =
ff_timefilter_new (1.0 / self->sample_rate, sqrt(2 * o), o * o);
192 jack_client_close(self->client);
214 jack_deactivate(self->client);
215 jack_client_close(self->client);
217 sem_destroy(&self->packet_count);
255 struct timespec timeout = {0, 0};
262 if (!self->activated) {
263 if (!jack_activate(self->client)) {
266 "JACK client registered and activated (rate=%dHz, buffer_size=%d frames)\n",
267 self->sample_rate, self->buffer_size);
276 if (sem_timedwait(&self->packet_count, &timeout)) {
277 if (errno == ETIMEDOUT) {
279 "Input error: timed out when waiting for JACK process callback output\n");
290 if (self->pkt_xrun) {
295 if (self->jack_xrun) {
316 #define OFFSET(x) offsetof(JackData, x)
337 .priv_class = &jack_indev_class,