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 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(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 u
= pa_xnew0(struct userdata
, 1);
277 u
->saved_frame_time_valid
= FALSE
;
279 u
->rtpoll
= pa_rtpoll_new();
280 pa_thread_mq_init(&u
->thread_mq
, m
->core
->mainloop
, u
->rtpoll
);
282 u
->jack_msgq
= pa_asyncmsgq_new(0);
283 u
->rtpoll_item
= pa_rtpoll_item_new_asyncmsgq_read(u
->rtpoll
, PA_RTPOLL_EARLY
-1, u
->jack_msgq
);
285 if (!(u
->client
= jack_client_open(client_name
, server_name
? JackServerName
: JackNullOption
, &status
, server_name
))) {
286 pa_log("jack_client_open() failed.");
290 ports
= jack_get_ports(u
->client
, NULL
, NULL
, JackPortIsPhysical
|JackPortIsOutput
);
293 for (p
= ports
; *p
; p
++)
297 channels
= m
->core
->default_sample_spec
.channels
;
299 if (pa_modargs_get_value_u32(ma
, "channels", &channels
) < 0 || channels
<= 0 || channels
>= PA_CHANNELS_MAX
) {
300 pa_log("failed to parse channels= argument.");
304 pa_channel_map_init_extend(&map
, channels
, PA_CHANNEL_MAP_ALSA
);
305 if (pa_modargs_get_channel_map(ma
, NULL
, &map
) < 0 || map
.channels
!= channels
) {
306 pa_log("failed to parse channel_map= argument.");
310 pa_log_info("Successfully connected as '%s'", jack_get_client_name(u
->client
));
312 u
->channels
= ss
.channels
= (uint8_t) channels
;
313 ss
.rate
= jack_get_sample_rate(u
->client
);
314 ss
.format
= PA_SAMPLE_FLOAT32NE
;
316 pa_assert(pa_sample_spec_valid(&ss
));
318 for (i
= 0; i
< ss
.channels
; i
++) {
319 if (!(u
->port
[i
] = jack_port_register(u
->client
, pa_channel_position_to_string(map
.map
[i
]), JACK_DEFAULT_AUDIO_TYPE
, JackPortIsInput
|JackPortIsTerminal
, 0))) {
320 pa_log("jack_port_register() failed.");
325 pa_source_new_data_init(&data
);
326 data
.driver
= __FILE__
;
328 pa_source_new_data_set_name(&data
, pa_modargs_get_value(ma
, "source_name", DEFAULT_SOURCE_NAME
));
329 pa_source_new_data_set_sample_spec(&data
, &ss
);
330 pa_source_new_data_set_channel_map(&data
, &map
);
331 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_API
, "jack");
333 pa_proplist_sets(data
.proplist
, PA_PROP_DEVICE_STRING
, server_name
);
334 pa_proplist_setf(data
.proplist
, PA_PROP_DEVICE_DESCRIPTION
, "Jack source (%s)", jack_get_client_name(u
->client
));
335 pa_proplist_sets(data
.proplist
, "jack.client_name", jack_get_client_name(u
->client
));
337 u
->source
= pa_source_new(m
->core
, &data
, PA_SOURCE_LATENCY
);
338 pa_source_new_data_done(&data
);
341 pa_log("Failed to create source.");
345 u
->source
->parent
.process_msg
= source_process_msg
;
346 u
->source
->userdata
= u
;
348 pa_source_set_asyncmsgq(u
->source
, u
->thread_mq
.inq
);
349 pa_source_set_rtpoll(u
->source
, u
->rtpoll
);
351 jack_set_process_callback(u
->client
, jack_process
, u
);
352 jack_on_shutdown(u
->client
, jack_shutdown
, u
);
353 jack_set_thread_init_callback(u
->client
, jack_init
, u
);
355 if (!(u
->thread
= pa_thread_new(thread_func
, u
))) {
356 pa_log("Failed to create thread.");
360 if (jack_activate(u
->client
)) {
361 pa_log("jack_activate() failed");
366 for (i
= 0, p
= ports
; i
< ss
.channels
; i
++, p
++) {
369 pa_log("not enough physical output ports, leaving unconnected.");
373 pa_log_info("connecting %s to %s", jack_port_name(u
->port
[i
]), *p
);
375 if (jack_connect(u
->client
, *p
, jack_port_name(u
->port
[i
]))) {
376 pa_log("failed to connect %s to %s, leaving unconnected.", jack_port_name(u
->port
[i
]), *p
);
383 pa_source_put(u
->source
);
401 void pa__done(pa_module
*m
) {
405 if (!(u
= m
->userdata
))
409 jack_client_close(u
->client
);
412 pa_source_unlink(u
->source
);
415 pa_asyncmsgq_send(u
->thread_mq
.inq
, NULL
, PA_MESSAGE_SHUTDOWN
, NULL
, 0, NULL
);
416 pa_thread_free(u
->thread
);
419 pa_thread_mq_done(&u
->thread_mq
);
422 pa_source_unref(u
->source
);
425 pa_rtpoll_item_free(u
->rtpoll_item
);
428 pa_asyncmsgq_unref(u
->jack_msgq
);
431 pa_rtpoll_free(u
->rtpoll
);