/* Called from output thread context */ static void sink_input_attach_cb(pa_sink_input *i) { struct userdata *u; pa_sink_input_assert_ref(i); pa_sink_input_assert_io_context(i); pa_assert_se(u = i->userdata); u->rtpoll_item_read = pa_rtpoll_item_new_asyncmsgq_read( i->sink->thread_info.rtpoll, PA_RTPOLL_LATE, u->asyncmsgq); pa_memblockq_set_prebuf(u->memblockq, pa_sink_input_get_max_request(i)*2); pa_memblockq_set_maxrewind(u->memblockq, pa_sink_input_get_max_rewind(i)); }
void pa_thread_mq_init(pa_thread_mq *q, pa_mainloop_api *mainloop, pa_rtpoll *rtpoll) { pa_assert(q); pa_assert(mainloop); q->mainloop = mainloop; pa_assert_se(q->inq = pa_asyncmsgq_new(0)); pa_assert_se(q->outq = pa_asyncmsgq_new(0)); pa_assert_se(pa_asyncmsgq_read_before_poll(q->outq) == 0); pa_assert_se(q->read_event = mainloop->io_new(mainloop, pa_asyncmsgq_read_fd(q->outq), PA_IO_EVENT_INPUT, asyncmsgq_read_cb, q)); pa_asyncmsgq_write_before_poll(q->inq); pa_assert_se(q->write_event = mainloop->io_new(mainloop, pa_asyncmsgq_write_fd(q->inq), PA_IO_EVENT_INPUT, asyncmsgq_write_cb, q)); pa_rtpoll_item_new_asyncmsgq_read(rtpoll, PA_RTPOLL_EARLY, q->inq); pa_rtpoll_item_new_asyncmsgq_write(rtpoll, PA_RTPOLL_LATE, q->outq); }
int pa__init(pa_module*m) { struct userdata *u = NULL; pa_sample_spec ss; pa_channel_map map; pa_modargs *ma = NULL; jack_status_t status; const char *server_name, *client_name; uint32_t channels = 0; pa_bool_t do_connect = TRUE; unsigned i; const char **ports = NULL, **p; pa_sink_new_data data; pa_assert(m); jack_set_error_function(jack_error_func); if (!(ma = pa_modargs_new(m->argument, valid_modargs))) { pa_log("Failed to parse module arguments."); goto fail; } if (pa_modargs_get_value_boolean(ma, "connect", &do_connect) < 0) { pa_log("Failed to parse connect= argument."); goto fail; } server_name = pa_modargs_get_value(ma, "server_name", NULL); client_name = pa_modargs_get_value(ma, "client_name", "PulseAudio JACK Sink"); m->userdata = u = pa_xnew0(struct userdata, 1); u->core = m->core; u->module = m; u->saved_frame_time_valid = FALSE; u->rtpoll = pa_rtpoll_new(); pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll); /* The queue linking the JACK thread and our RT thread */ u->jack_msgq = pa_asyncmsgq_new(0); /* The msgq from the JACK RT thread should have an even higher * priority than the normal message queues, to match the guarantee * all other drivers make: supplying the audio device with data is * the top priority -- and as long as that is possible we don't do * anything else */ u->rtpoll_item = pa_rtpoll_item_new_asyncmsgq_read(u->rtpoll, PA_RTPOLL_EARLY-1, u->jack_msgq); if (!(u->client = jack_client_open(client_name, server_name ? JackServerName : JackNullOption, &status, server_name))) { pa_log("jack_client_open() failed."); goto fail; } ports = jack_get_ports(u->client, NULL, JACK_DEFAULT_AUDIO_TYPE, JackPortIsPhysical|JackPortIsInput); channels = 0; for (p = ports; *p; p++) channels++; if (!channels) channels = m->core->default_sample_spec.channels; if (pa_modargs_get_value_u32(ma, "channels", &channels) < 0 || channels <= 0 || channels > PA_CHANNELS_MAX) { pa_log("Failed to parse channels= argument."); goto fail; } if (channels == m->core->default_channel_map.channels) map = m->core->default_channel_map; else pa_channel_map_init_extend(&map, channels, PA_CHANNEL_MAP_ALSA); if (pa_modargs_get_channel_map(ma, NULL, &map) < 0 || map.channels != channels) { pa_log("Failed to parse channel_map= argument."); goto fail; } pa_log_info("Successfully connected as '%s'", jack_get_client_name(u->client)); u->channels = ss.channels = (uint8_t) channels; ss.rate = jack_get_sample_rate(u->client); ss.format = PA_SAMPLE_FLOAT32NE; pa_assert(pa_sample_spec_valid(&ss)); for (i = 0; i < ss.channels; i++) { if (!(u->port[i] = jack_port_register(u->client, pa_channel_position_to_string(map.map[i]), JACK_DEFAULT_AUDIO_TYPE, JackPortIsOutput|JackPortIsTerminal, 0))) { pa_log("jack_port_register() failed."); goto fail; } } pa_sink_new_data_init(&data); data.driver = __FILE__; data.module = m; pa_sink_new_data_set_name(&data, pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME)); pa_sink_new_data_set_sample_spec(&data, &ss); pa_sink_new_data_set_channel_map(&data, &map); pa_proplist_sets(data.proplist, PA_PROP_DEVICE_API, "jack"); if (server_name) pa_proplist_sets(data.proplist, PA_PROP_DEVICE_STRING, server_name); pa_proplist_setf(data.proplist, PA_PROP_DEVICE_DESCRIPTION, "Jack sink (%s)", jack_get_client_name(u->client)); pa_proplist_sets(data.proplist, "jack.client_name", jack_get_client_name(u->client)); if (pa_modargs_get_proplist(ma, "sink_properties", data.proplist, PA_UPDATE_REPLACE) < 0) { pa_log("Invalid properties"); pa_sink_new_data_done(&data); goto fail; } u->sink = pa_sink_new(m->core, &data, PA_SINK_LATENCY); pa_sink_new_data_done(&data); if (!u->sink) { pa_log("Failed to create sink."); goto fail; } u->sink->parent.process_msg = sink_process_msg; u->sink->userdata = u; pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq); pa_sink_set_rtpoll(u->sink, u->rtpoll); pa_sink_set_max_request(u->sink, jack_get_buffer_size(u->client) * pa_frame_size(&u->sink->sample_spec)); jack_set_process_callback(u->client, jack_process, u); jack_on_shutdown(u->client, jack_shutdown, u); jack_set_thread_init_callback(u->client, jack_init, u); jack_set_buffer_size_callback(u->client, jack_buffer_size, u); if (!(u->thread = pa_thread_new(thread_func, u))) { pa_log("Failed to create thread."); goto fail; } if (jack_activate(u->client)) { pa_log("jack_activate() failed"); goto fail; } if (do_connect) { for (i = 0, p = ports; i < ss.channels; i++, p++) { if (!*p) { pa_log("Not enough physical output ports, leaving unconnected."); break; } pa_log_info("Connecting %s to %s", jack_port_name(u->port[i]), *p); if (jack_connect(u->client, jack_port_name(u->port[i]), *p)) { pa_log("Failed to connect %s to %s, leaving unconnected.", jack_port_name(u->port[i]), *p); break; } } } pa_sink_put(u->sink); free(ports); pa_modargs_free(ma); return 0; fail: if (ma) pa_modargs_free(ma); free(ports); pa__done(m); return -1; }