4 This file is part of PulseAudio.
6 Copyright 2006 Lennart Poettering
8 PulseAudio is free software; you can redistribute it and/or modify
9 it under the terms of the GNU Lesser General Public License as published
10 by the Free Software Foundation; either version 2 of the License,
11 or (at your option) any later version.
13 PulseAudio is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with PulseAudio; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
37 #include <jack/jack.h>
39 #include <pulse/xmalloc.h>
41 #include <pulsecore/core-error.h>
42 #include <pulsecore/source.h>
43 #include <pulsecore/module.h>
44 #include <pulsecore/core-util.h>
45 #include <pulsecore/modargs.h>
46 #include <pulsecore/log.h>
47 #include <pulsecore/thread.h>
48 #include <pulsecore/thread-mq.h>
49 #include <pulsecore/rtpoll.h>
50 #include <pulsecore/sample-util.h>
52 #include "module-jack-source-symdef.h"
54 /* See module-jack-sink for a few comments how this module basically
57 PA_MODULE_AUTHOR("Lennart Poettering");
58 PA_MODULE_DESCRIPTION("JACK Source");
59 PA_MODULE_VERSION(PACKAGE_VERSION);
60 PA_MODULE_LOAD_ONCE(TRUE);
62 "source_name=<name of source> "
63 "server_name=<jack server name> "
64 "client_name=<jack client name> "
65 "channels=<number of channels> "
66 "connect=<connect ports?>"
67 "channel_map=<channel map>");
69 #define DEFAULT_SOURCE_NAME "jack_in"
78 jack_port_t* port[PA_CHANNELS_MAX];
79 jack_client_t *client;
81 pa_thread_mq thread_mq;
82 pa_asyncmsgq *jack_msgq;
84 pa_rtpoll_item *rtpoll_item;
88 jack_nframes_t saved_frame_time;
89 pa_bool_t saved_frame_time_valid;
92 static const char* const valid_modargs[] = {
103 SOURCE_MESSAGE_POST = PA_SOURCE_MESSAGE_MAX,
104 SOURCE_MESSAGE_ON_SHUTDOWN
107 static int source_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
108 struct userdata *u = PA_SOURCE(o)->userdata;
112 case SOURCE_MESSAGE_POST:
114 /* Handle the new block from the JACK thread */
116 pa_assert(chunk->length > 0);
118 if (u->source->thread_info.state == PA_SOURCE_RUNNING)
119 pa_source_post(u->source, chunk);
121 u->saved_frame_time = offset;
122 u->saved_frame_time_valid = TRUE;
126 case SOURCE_MESSAGE_ON_SHUTDOWN:
127 pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
130 case PA_SOURCE_MESSAGE_GET_LATENCY: {
131 jack_nframes_t l, ft, d;
134 /* This is the "worst-case" latency */
135 l = jack_port_get_total_latency(u->client, u->port[0]);
137 if (u->saved_frame_time_valid) {
138 /* Adjust the worst case latency by the time that
139 * passed since we last handed data to JACK */
141 ft = jack_frame_time(u->client);
142 d = ft > u->saved_frame_time ? ft - u->saved_frame_time : 0;
146 /* Convert it to usec */
147 n = l * pa_frame_size(&u->source->sample_spec);
148 *((pa_usec_t*) data) = pa_bytes_to_usec(n, &u->source->sample_spec);
154 return pa_source_process_msg(o, code, data, offset, chunk);
157 static int jack_process(jack_nframes_t nframes, void *arg) {
159 struct userdata *u = arg;
160 const void *buffer[PA_CHANNELS_MAX];
162 jack_nframes_t frame_time;
167 for (c = 0; c < u->channels; c++)
168 pa_assert(buffer[c] = jack_port_get_buffer(u->port[c], nframes));
170 /* We interleave the data and pass it on to the other RT thread */
172 pa_memchunk_reset(&chunk);
173 chunk.length = nframes * pa_frame_size(&u->source->sample_spec);
174 chunk.memblock = pa_memblock_new(u->core->mempool, chunk.length);
175 p = pa_memblock_acquire(chunk.memblock);
176 pa_interleave(buffer, u->channels, p, sizeof(float), nframes);
177 pa_memblock_release(chunk.memblock);
179 frame_time = jack_frame_time(u->client);
181 pa_asyncmsgq_post(u->jack_msgq, PA_MSGOBJECT(u->source), SOURCE_MESSAGE_POST, NULL, frame_time, &chunk, NULL);
183 pa_memblock_unref(chunk.memblock);
188 static void thread_func(void *userdata) {
189 struct userdata *u = userdata;
193 pa_log_debug("Thread starting up");
195 if (u->core->realtime_scheduling)
196 pa_make_realtime(u->core->realtime_priority);
198 pa_thread_mq_install(&u->thread_mq);
199 pa_rtpoll_install(u->rtpoll);
204 if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0)
212 /* If this was no regular exit from the loop we have to continue
213 * processing messages until we received PA_MESSAGE_SHUTDOWN */
214 pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
215 pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
218 pa_log_debug("Thread shutting down");
221 static void jack_error_func(const char*t) {
224 s = pa_xstrndup(t, strcspn(t, "\n\r"));
225 pa_log_warn("JACK error >%s<", s);
229 static void jack_init(void *arg) {
230 struct userdata *u = arg;
232 pa_log_info("JACK thread starting up.");
234 if (u->core->realtime_scheduling)
235 pa_make_realtime(u->core->realtime_priority+4);
238 static void jack_shutdown(void* arg) {
239 struct userdata *u = arg;
241 pa_log_info("JACK thread shutting down..");
242 pa_asyncmsgq_post(u->jack_msgq, PA_MSGOBJECT(u->source), SOURCE_MESSAGE_ON_SHUTDOWN, NULL, 0, NULL, NULL);
245 int pa__init(pa_module*m) {
246 struct userdata *u = NULL;
249 pa_modargs *ma = NULL;
250 jack_status_t status;
251 const char *server_name, *client_name;
252 uint32_t channels = 0;
253 pa_bool_t do_connect = TRUE;
255 const char **ports = NULL, **p;
256 pa_source_new_data data;
260 jack_set_error_function(jack_error_func);
262 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
263 pa_log("Failed to parse module arguments.");
267 if (pa_modargs_get_value_boolean(ma, "connect", &do_connect) < 0) {
268 pa_log("Failed to parse connect= argument.");
272 server_name = pa_modargs_get_value(ma, "server_name", NULL);
273 client_name = pa_modargs_get_value(ma, "client_name", "PulseAudio JACK Source");
275 u = pa_xnew0(struct userdata, 1);
279 u->saved_frame_time_valid = FALSE;
281 u->rtpoll = pa_rtpoll_new();
282 pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll);
284 u->jack_msgq = pa_asyncmsgq_new(0);
285 u->rtpoll_item = pa_rtpoll_item_new_asyncmsgq_read(u->rtpoll, PA_RTPOLL_EARLY-1, u->jack_msgq);
287 if (!(u->client = jack_client_open(client_name, server_name ? JackServerName : JackNullOption, &status, server_name))) {
288 pa_log("jack_client_open() failed.");
292 ports = jack_get_ports(u->client, NULL, NULL, JackPortIsPhysical|JackPortIsOutput);
295 for (p = ports; *p; p++)
299 channels = m->core->default_sample_spec.channels;
301 if (pa_modargs_get_value_u32(ma, "channels", &channels) < 0 || channels <= 0 || channels >= PA_CHANNELS_MAX) {
302 pa_log("failed to parse channels= argument.");
306 pa_assert_se(pa_channel_map_init_auto(&map, channels, PA_CHANNEL_MAP_AUX));
307 pa_channel_map_init_auto(&map, channels, PA_CHANNEL_MAP_ALSA);
308 if (pa_modargs_get_channel_map(ma, NULL, &map) < 0 || map.channels != channels) {
309 pa_log("failed to parse channel_map= argument.");
313 pa_log_info("Successfully connected as '%s'", jack_get_client_name(u->client));
315 ss.channels = u->channels = channels;
316 ss.rate = jack_get_sample_rate(u->client);
317 ss.format = PA_SAMPLE_FLOAT32NE;
319 pa_assert(pa_sample_spec_valid(&ss));
321 for (i = 0; i < ss.channels; i++) {
322 if (!(u->port[i] = jack_port_register(u->client, pa_channel_position_to_string(map.map[i]), JACK_DEFAULT_AUDIO_TYPE, JackPortIsInput|JackPortIsTerminal, 0))) {
323 pa_log("jack_port_register() failed.");
328 pa_source_new_data_init(&data);
329 data.driver = __FILE__;
331 pa_source_new_data_set_name(&data, pa_modargs_get_value(ma, "source_name", DEFAULT_SOURCE_NAME));
332 pa_source_new_data_set_sample_spec(&data, &ss);
333 pa_source_new_data_set_channel_map(&data, &map);
334 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_API, "jack");
336 pa_proplist_sets(data.proplist, PA_PROP_DEVICE_STRING, server_name);
337 pa_proplist_setf(data.proplist, PA_PROP_DEVICE_DESCRIPTION, "Jack source (%s)", jack_get_client_name(u->client));
338 pa_proplist_sets(data.proplist, "jack.client_name", jack_get_client_name(u->client));
340 u->source = pa_source_new(m->core, &data, PA_SOURCE_LATENCY);
341 pa_source_new_data_done(&data);
344 pa_log("Failed to create source.");
348 u->source->parent.process_msg = source_process_msg;
349 u->source->userdata = u;
351 pa_source_set_asyncmsgq(u->source, u->thread_mq.inq);
352 pa_source_set_rtpoll(u->source, u->rtpoll);
354 jack_set_process_callback(u->client, jack_process, u);
355 jack_on_shutdown(u->client, jack_shutdown, u);
356 jack_set_thread_init_callback(u->client, jack_init, u);
358 if (!(u->thread = pa_thread_new(thread_func, u))) {
359 pa_log("Failed to create thread.");
363 if (jack_activate(u->client)) {
364 pa_log("jack_activate() failed");
369 for (i = 0, p = ports; i < ss.channels; i++, p++) {
372 pa_log("not enough physical output ports, leaving unconnected.");
376 pa_log_info("connecting %s to %s", jack_port_name(u->port[i]), *p);
378 if (jack_connect(u->client, *p, jack_port_name(u->port[i]))) {
379 pa_log("failed to connect %s to %s, leaving unconnected.", jack_port_name(u->port[i]), *p);
386 pa_source_put(u->source);
404 void pa__done(pa_module*m) {
408 if (!(u = m->userdata))
412 jack_client_close(u->client);
415 pa_source_unlink(u->source);
418 pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL);
419 pa_thread_free(u->thread);
422 pa_thread_mq_done(&u->thread_mq);
425 pa_source_unref(u->source);
428 pa_rtpoll_item_free(u->rtpoll_item);
431 pa_asyncmsgq_unref(u->jack_msgq);
434 pa_rtpoll_free(u->rtpoll);