void open_client(std::string const & server_name, std::string const & name, uint32_t input_port_count,
uint32_t output_port_count, uint32_t blocksize)
{
blocksize_ = blocksize;
/* open client */
client = server_name.empty() ? jack_client_open(name.c_str(), JackNoStartServer, &status)
: jack_client_open(name.c_str(), jack_options_t(JackNoStartServer | JackServerName),
&status, server_name.c_str());
boost::atomic_thread_fence(boost::memory_order_release); // ensure visibility on other threads
if (status & JackServerFailed)
throw std::runtime_error("Unable to connect to JACK server");
if (status & JackNameNotUnique) {
const char * client_name = jack_get_client_name(client);
std::cout << "unique client name: " << client_name << std::endl;
}
/* initialize callbacks */
jack_set_thread_init_callback (client, jack_thread_init_callback, this);
jack_set_process_callback (client, jack_process_callback, this);
jack_set_xrun_callback(client, jack_xrun_callback, this);
jack_on_info_shutdown(client, (JackInfoShutdownCallback)jack_on_info_shutdown_callback, NULL);
/* register ports */
input_ports.clear();
for (uint32_t i = 0; i != input_port_count; ++i) {
std::string portname ("input_");
portname += std::to_string(i+1);
jack_port_t * port =
jack_port_register(client, portname.c_str(), JACK_DEFAULT_AUDIO_TYPE, JackPortIsInput, 0);
input_ports.push_back(port);
}
input_channels = input_port_count;
super::input_samples.resize(input_port_count);
output_ports.clear();
for (uint32_t i = 0; i != output_port_count; ++i) {
std::string portname ("output_");
portname += std::to_string(i+1);
jack_port_t * port =
jack_port_register(client, portname.c_str(), JACK_DEFAULT_AUDIO_TYPE, JackPortIsOutput, 0);
output_ports.push_back(port);
}
output_channels = output_port_count;
super::output_samples.resize(output_port_count);
samplerate_ = jack_get_sample_rate(client);
jack_frames = jack_get_buffer_size(client);
if (jack_frames % blocksize_)
throw std::runtime_error("Jack buffer size is not a multiple of blocksize");
}
gboolean cbox_jackio_start(struct cbox_io_impl *impl, struct cbox_command_target *fb, GError **error)
{
struct cbox_jack_io_impl *jii = (struct cbox_jack_io_impl *)impl;
struct cbox_io *io = jii->ioi.pio;
if (io->cb->on_transport_sync)
jack_set_sync_callback(jii->client, sync_cb, jii);
jack_set_process_callback(jii->client, process_cb, jii);
jack_set_port_registration_callback(jii->client, port_connect_cb, jii);
jack_on_info_shutdown(jii->client, client_shutdown_cb, jii);
if (io->cb->on_started)
io->cb->on_started(io->cb->user_data);
jack_activate(jii->client);
if (cbox_config_has_section(cbox_io_section))
port_autoconnect(jii, NULL, fb);
return TRUE;
}