2 This file is part of PulseAudio.
4 Copyright 2006 Lennart Poettering
6 PulseAudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU Lesser General Public License as published
8 by the Free Software Foundation; either version 2.1 of the License,
9 or (at your option) any later version.
11 PulseAudio is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with PulseAudio; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
35 #include <jack/jack.h>
37 #include <pulse/xmalloc.h>
39 #include <pulsecore/core-error.h>
40 #include <pulsecore/source.h>
41 #include <pulsecore/module.h>
42 #include <pulsecore/core-util.h>
43 #include <pulsecore/modargs.h>
44 #include <pulsecore/log.h>
45 #include <pulsecore/thread.h>
46 #include <pulsecore/thread-mq.h>
47 #include <pulsecore/rtpoll.h>
48 #include <pulsecore/sample-util.h>
50 #include "module-jack-source-symdef.h"
52 /* See module-jack-sink for a few comments how this module basically
55 PA_MODULE_AUTHOR("Lennart Poettering");
56 PA_MODULE_DESCRIPTION("JACK Source");
57 PA_MODULE_VERSION(PACKAGE_VERSION);
58 PA_MODULE_LOAD_ONCE(TRUE);
60 "source_name=<name of source> "
61 "server_name=<jack server name> "
62 "client_name=<jack client name> "
63 "channels=<number of channels> "
64 "connect=<connect ports?>"
65 "channel_map=<channel map>");
67 #define DEFAULT_SOURCE_NAME "jack_in"
76 jack_port_t* port[PA_CHANNELS_MAX];
77 jack_client_t *client;
79 pa_thread_mq thread_mq;
80 pa_asyncmsgq *jack_msgq;
82 pa_rtpoll_item *rtpoll_item;
86 jack_nframes_t saved_frame_time;
87 pa_bool_t saved_frame_time_valid;
90 static const char* const valid_modargs[] = {
101 SOURCE_MESSAGE_POST = PA_SOURCE_MESSAGE_MAX,
102 SOURCE_MESSAGE_ON_SHUTDOWN
105 static int source_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
106 struct userdata *u = PA_SOURCE(o)->userdata;
110 case SOURCE_MESSAGE_POST:
112 /* Handle the new block from the JACK thread */
114 pa_assert(chunk->length > 0);
116 if (u->source->thread_info.state == PA_SOURCE_RUNNING)
117 pa_source_post(u->source, chunk);
119 u->saved_frame_time = (jack_nframes_t) offset;
120 u->saved_frame_time_valid = TRUE;
124 case SOURCE_MESSAGE_ON_SHUTDOWN:
125 pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
128 case PA_SOURCE_MESSAGE_GET_LATENCY: {
129 jack_nframes_t l, ft, d;
132 /* This is the "worst-case" latency */
133 l = jack_port_get_total_latency(u->client, u->port[0]);
135 if (u->saved_frame_time_valid) {
136 /* Adjust the worst case latency by the time that
137 * passed since we last handed data to JACK */
139 ft = jack_frame_time(u->client);
140 d = ft > u->saved_frame_time ? ft - u->saved_frame_time : 0;
144 /* Convert it to usec */
145 n = l * pa_frame_size(&u->source->sample_spec);
146 *((pa_usec_t*) data) = pa_bytes_to_usec(n, &u->source->sample_spec);
152 return pa_source_process_msg(o, code, data, offset, chunk);
155 static int jack_process(jack_nframes_t nframes, void *arg) {
157 struct userdata *u = arg;
158 const void *buffer[PA_CHANNELS_MAX];
160 jack_nframes_t frame_time;
165 for (c = 0; c < u->channels; c++)
166 pa_assert_se(buffer[c] = jack_port_get_buffer(u->port[c], nframes));
168 /* We interleave the data and pass it on to the other RT thread */
170 pa_memchunk_reset(&chunk);
171 chunk.length = nframes * pa_frame_size(&u->source->sample_spec);
172 chunk.memblock = pa_memblock_new(u->core->mempool, chunk.length);
173 p = pa_memblock_acquire(chunk.memblock);
174 pa_interleave(buffer, u->channels, p, sizeof(float), nframes);
175 pa_memblock_release(chunk.memblock);
177 frame_time = jack_frame_time(u->client);
179 pa_asyncmsgq_post(u->jack_msgq, PA_MSGOBJECT(u->source), SOURCE_MESSAGE_POST, NULL, frame_time, &chunk, NULL);
181 pa_memblock_unref(chunk.memblock);
186 static void thread_func(void *userdata) {
187 struct userdata *u = userdata;
191 pa_log_debug("Thread starting up");
193 if (u->core->realtime_scheduling)
194 pa_make_realtime(u->core->realtime_priority);
196 pa_thread_mq_install(&u->thread_mq);
197 pa_rtpoll_install(u->rtpoll);
202 if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0)
210 /* If this was no regular exit from the loop we have to continue
211 * processing messages until we received PA_MESSAGE_SHUTDOWN */
212 pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
213 pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
216 pa_log_debug("Thread shutting down");
219 static void jack_error_func(const char*t) {
222 s = pa_xstrndup(t, strcspn(t, "\n\r"));
223 pa_log_warn("JACK error >%s<", s);
227 static void jack_init(void *arg) {
228 struct userdata *u = arg;
230 pa_log_info("JACK thread starting up.");
232 if (u->core->realtime_scheduling)
233 pa_make_realtime(u->core->realtime_priority+4);
236 static void jack_shutdown(void* arg) {
237 struct userdata *u = arg;
239 pa_log_info("JACK thread shutting down..");
240 pa_asyncmsgq_post(u->jack_msgq, PA_MSGOBJECT(u->source), SOURCE_MESSAGE_ON_SHUTDOWN, NULL, 0, NULL, NULL);
243 int pa__init(pa_module*m) {
244 struct userdata *u = NULL;
247 pa_modargs *ma = NULL;
248 jack_status_t status;
249 const char *server_name, *client_name;
250 uint32_t channels = 0;
251 pa_bool_t do_connect = TRUE;
253 const char **ports = NULL, **p;
254 pa_source_new_data data;
258 jack_set_error_function(jack_error_func);
260 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
261 pa_log("Failed to parse module arguments.");
265 if (pa_modargs_get_value_boolean(ma, "connect", &do_connect) < 0) {
266 pa_log("Failed to parse connect= argument.");
270 server_name = pa_modargs_get_value(ma, "server_name", NULL);
271 client_name = pa_modargs_get_value(ma, "client_name", "PulseAudio JACK Source");
273 m->userdata = u = pa_xnew0(struct userdata, 1);
276 u->saved_frame_time_valid = FALSE;
277 u->rtpoll = pa_rtpoll_new();
278 pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll);
280 u->jack_msgq = pa_asyncmsgq_new(0);
281 u->rtpoll_item = pa_rtpoll_item_new_asyncmsgq_read(u->rtpoll, PA_RTPOLL_EARLY-1, u->jack_msgq);
283 if (!(u->client = jack_client_open(client_name, server_name ? JackServerName : JackNullOption, &status, server_name))) {
284 pa_log("jack_client_open() failed.");
288 ports = jack_get_ports(u->client, NULL, NULL, JackPortIsPhysical|JackPortIsOutput);
291 for (p = ports; *p; p++)
295 channels = m->core->default_sample_spec.channels;
297 if (pa_modargs_get_value_u32(ma, "channels", &channels) < 0 ||
299 channels >= PA_CHANNELS_MAX) {
300 pa_log("failed to parse channels= argument.");
304 if (channels == m->core->default_channel_map.channels)
305 map = m->core->default_channel_map;
307 pa_channel_map_init_extend(&map, channels, PA_CHANNEL_MAP_ALSA);
309 if (pa_modargs_get_channel_map(ma, NULL, &map) < 0 || map.channels != channels) {
310 pa_log("failed to parse channel_map= argument.");
314 pa_log_info("Successfully connected as '%s'", jack_get_client_name(u->client));
316 u->channels = ss.channels = (uint8_t) channels;
317 ss.rate = jack_get_sample_rate(u->client);
318 ss.format = PA_SAMPLE_FLOAT32NE;
320 pa_assert(pa_sample_spec_valid(&ss));
322 for (i = 0; i < ss.channels; i++) {
323 if (!(u->port[i] = jack_port_register(u->client, pa_channel_position_to_string(map.map[i]), JACK_DEFAULT_AUDIO_TYPE, JackPortIsInput|JackPortIsTerminal, 0))) {
324 pa_log("jack_port_register() failed.");
329 pa_source_new_data_init(&data);
330 data.driver = __FILE__;
332 pa_source_new_data_set_name(&data, pa_modargs_get_value(ma, "source_name", DEFAULT_SOURCE_NAME));
333 pa_source_new_data_set_sample_spec(&data, &ss);
334 pa_source_new_data_set_channel_map(&data, &map);
335 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_API, "jack");
337 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_STRING, server_name);
338 pa_proplist_setf(data.proplist, PA_PROP_DEVICE_DESCRIPTION, "Jack source (%s)", jack_get_client_name(u->client));
339 pa_proplist_sets(data.proplist, "jack.client_name", jack_get_client_name(u->client));
341 u->source = pa_source_new(m->core, &data, PA_SOURCE_LATENCY);
342 pa_source_new_data_done(&data);
345 pa_log("Failed to create source.");
349 u->source->parent.process_msg = source_process_msg;
350 u->source->userdata = u;
352 pa_source_set_asyncmsgq(u->source, u->thread_mq.inq);
353 pa_source_set_rtpoll(u->source, u->rtpoll);
355 jack_set_process_callback(u->client, jack_process, u);
356 jack_on_shutdown(u->client, jack_shutdown, u);
357 jack_set_thread_init_callback(u->client, jack_init, u);
359 if (!(u->thread = pa_thread_new(thread_func, u))) {
360 pa_log("Failed to create thread.");
364 if (jack_activate(u->client)) {
365 pa_log("jack_activate() failed");
370 for (i = 0, p = ports; i < ss.channels; i++, p++) {
373 pa_log("Not enough physical output ports, leaving unconnected.");
377 pa_log_info("Connecting %s to %s", jack_port_name(u->port[i]), *p);
379 if (jack_connect(u->client, *p, jack_port_name(u->port[i]))) {
380 pa_log("Failed to connect %s to %s, leaving unconnected.", jack_port_name(u->port[i]), *p);
387 pa_source_put(u->source);
405 int pa__get_n_used(pa_module *m) {
409 pa_assert_se(u = m->userdata);
411 return pa_source_linked_by(u->source);
414 void pa__done(pa_module*m) {
418 if (!(u = m->userdata))
422 jack_client_close(u->client);
425 pa_source_unlink(u->source);
428 pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL);
429 pa_thread_free(u->thread);
432 pa_thread_mq_done(&u->thread_mq);
435 pa_source_unref(u->source);
438 pa_rtpoll_item_free(u->rtpoll_item);
441 pa_asyncmsgq_unref(u->jack_msgq);
444 pa_rtpoll_free(u->rtpoll);