4 This file is part of polypaudio.
6 polypaudio 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 polypaudio 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 polypaudio; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
37 #include <jack/jack.h>
39 #include <polyp/xmalloc.h>
41 #include <polypcore/iochannel.h>
42 #include <polypcore/source.h>
43 #include <polypcore/module.h>
44 #include <polypcore/util.h>
45 #include <polypcore/modargs.h>
46 #include <polypcore/log.h>
47 #include <polyp/mainloop-api.h>
49 #include "module-jack-source-symdef.h"
51 PA_MODULE_AUTHOR("Lennart Poettering")
52 PA_MODULE_DESCRIPTION("Jack Source")
53 PA_MODULE_VERSION(PACKAGE_VERSION)
55 "source_name=<name of source> "
56 "server_name=<jack server name> "
57 "client_name=<jack client name> "
58 "channels=<number of channels> "
59 "connect=<connect ports?>"
60 "channel_map=<channel map>")
62 #define DEFAULT_SOURCE_NAME "jack_in"
72 jack_port_t* port[PA_CHANNELS_MAX];
73 jack_client_t *client;
75 pthread_mutex_t mutex;
78 void * buffer[PA_CHANNELS_MAX];
79 jack_nframes_t frames_posted;
83 pa_io_event *io_event;
85 jack_nframes_t frames_in_buffer;
86 jack_nframes_t timestamp;
89 static const char* const valid_modargs[] = {
99 static void stop_source(struct userdata *u) {
102 jack_client_close(u->client);
104 u->core->mainloop->io_free(u->io_event);
106 pa_source_disconnect(u->source);
107 pa_source_unref(u->source);
109 pa_module_unload_request(u->module);
112 static void io_event_cb(pa_mainloop_api *m, pa_io_event *e, int fd, pa_io_event_flags_t flags, void *userdata) {
113 struct userdata *u = userdata;
117 assert(flags == PA_IO_EVENT_INPUT);
119 assert(u->pipe_fds[0] == fd);
123 if (u->quit_requested) {
125 u->quit_requested = 0;
129 pthread_mutex_lock(&u->mutex);
131 if (u->frames_posted > 0) {
133 jack_nframes_t frame_idx;
136 fs = pa_frame_size(&u->source->sample_spec);
138 chunk.memblock = pa_memblock_new(chunk.length = u->frames_posted * fs, u->core->memblock_stat);
141 for (frame_idx = 0; frame_idx < u->frames_posted; frame_idx ++) {
144 for (c = 0; c < u->channels; c++) {
145 float *s = ((float*) u->buffer[c]) + frame_idx;
146 float *d = ((float*) ((uint8_t*) chunk.memblock->data + chunk.index)) + (frame_idx * u->channels) + c;
152 pa_source_post(u->source, &chunk);
153 pa_memblock_unref(chunk.memblock);
155 u->frames_posted = 0;
157 pthread_cond_signal(&u->cond);
160 pthread_mutex_unlock(&u->mutex);
163 static void request_post(struct userdata *u) {
167 assert(u->pipe_fds[1] >= 0);
168 write(u->pipe_fds[1], &c, 1);
171 static void jack_shutdown(void *arg) {
172 struct userdata *u = arg;
175 u->quit_requested = 1;
179 static int jack_process(jack_nframes_t nframes, void *arg) {
180 struct userdata *u = arg;
183 if (jack_transport_query(u->client, NULL) == JackTransportRolling) {
186 pthread_mutex_lock(&u->mutex);
188 u->frames_posted = nframes;
190 for (c = 0; c < u->channels; c++) {
191 u->buffer[c] = jack_port_get_buffer(u->port[c], nframes);
192 assert(u->buffer[c]);
197 pthread_cond_wait(&u->cond, &u->mutex);
199 u->frames_in_buffer = nframes;
200 u->timestamp = jack_get_current_transport_frame(u->client);
202 pthread_mutex_unlock(&u->mutex);
208 static pa_usec_t source_get_latency_cb(pa_source *s) {
210 jack_nframes_t n, l, d;
215 if (jack_transport_query(u->client, NULL) != JackTransportRolling)
218 n = jack_get_current_transport_frame(u->client);
220 if (n < u->timestamp)
223 d = n - u->timestamp;
224 l = jack_port_get_total_latency(u->client, u->port[0]);
226 return pa_bytes_to_usec((l + d) * pa_frame_size(&s->sample_spec), &s->sample_spec);
229 static void jack_error_func(const char*t) {
230 pa_log_warn(__FILE__": JACK error >%s<", t);
233 int pa__init(pa_core *c, pa_module*m) {
234 struct userdata *u = NULL;
237 pa_modargs *ma = NULL;
238 jack_status_t status;
239 const char *server_name, *client_name;
240 uint32_t channels = 0;
243 const char **ports = NULL, **p;
248 jack_set_error_function(jack_error_func);
250 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
251 pa_log(__FILE__": failed to parse module arguments.");
255 if (pa_modargs_get_value_boolean(ma, "connect", &connect) < 0) {
256 pa_log(__FILE__": failed to parse connect= argument.");
260 server_name = pa_modargs_get_value(ma, "server_name", NULL);
261 client_name = pa_modargs_get_value(ma, "client_name", "polypaudio");
263 u = pa_xnew0(struct userdata, 1);
267 u->pipe_fds[0] = u->pipe_fds[1] = -1;
269 pthread_mutex_init(&u->mutex, NULL);
270 pthread_cond_init(&u->cond, NULL);
272 if (pipe(u->pipe_fds) < 0) {
273 pa_log(__FILE__": pipe() failed: %s", strerror(errno));
277 pa_make_nonblock_fd(u->pipe_fds[1]);
279 if (!(u->client = jack_client_open(client_name, server_name ? JackServerName : JackNullOption, &status, server_name))) {
280 pa_log(__FILE__": jack_client_open() failed.");
284 ports = jack_get_ports(u->client, NULL, NULL, JackPortIsPhysical|JackPortIsOutput);
287 for (p = ports; *p; p++)
291 channels = c->default_sample_spec.channels;
293 if (pa_modargs_get_value_u32(ma, "channels", &channels) < 0 || channels <= 0 || channels >= PA_CHANNELS_MAX) {
294 pa_log(__FILE__": failed to parse channels= argument.");
298 pa_channel_map_init_auto(&map, channels, PA_CHANNEL_MAP_ALSA);
299 if (pa_modargs_get_channel_map(ma, &map) < 0 || map.channels != channels) {
300 pa_log(__FILE__": failed to parse channel_map= argument.");
304 pa_log_info(__FILE__": Successfully connected as '%s'", jack_get_client_name(u->client));
306 ss.channels = u->channels = channels;
307 ss.rate = jack_get_sample_rate(u->client);
308 ss.format = PA_SAMPLE_FLOAT32NE;
310 assert(pa_sample_spec_valid(&ss));
312 for (i = 0; i < ss.channels; i++) {
313 if (!(u->port[i] = jack_port_register(u->client, pa_channel_position_to_string(map.map[i]), JACK_DEFAULT_AUDIO_TYPE, JackPortIsInput|JackPortIsTerminal, 0))) {
314 pa_log(__FILE__": jack_port_register() failed.");
319 if (!(u->source = pa_source_new(c, __FILE__, pa_modargs_get_value(ma, "source_name", DEFAULT_SOURCE_NAME), 0, &ss, &map))) {
320 pa_log(__FILE__": failed to create source.");
324 u->source->userdata = u;
325 pa_source_set_owner(u->source, m);
326 u->source->description = pa_sprintf_malloc("Jack source (%s)", jack_get_client_name(u->client));
327 u->source->get_latency = source_get_latency_cb;
329 jack_set_process_callback(u->client, jack_process, u);
330 jack_on_shutdown(u->client, jack_shutdown, u);
332 if (jack_activate(u->client)) {
333 pa_log(__FILE__": jack_activate() failed");
338 for (i = 0, p = ports; i < ss.channels; i++, p++) {
341 pa_log(__FILE__": not enough physical output ports, leaving unconnected.");
345 pa_log_info(__FILE__": connecting %s to %s", jack_port_name(u->port[i]), *p);
347 if (jack_connect(u->client, *p, jack_port_name(u->port[i]))) {
348 pa_log(__FILE__": failed to connect %s to %s, leaving unconnected.", jack_port_name(u->port[i]), *p);
355 u->io_event = c->mainloop->io_new(c->mainloop, u->pipe_fds[0], PA_IO_EVENT_INPUT, io_event_cb, u);
373 void pa__done(pa_core *c, pa_module*m) {
377 if (!(u = m->userdata))
381 jack_client_close(u->client);
384 c->mainloop->io_free(u->io_event);
387 pa_source_disconnect(u->source);
388 pa_source_unref(u->source);
391 if (u->pipe_fds[0] >= 0)
392 close(u->pipe_fds[0]);
393 if (u->pipe_fds[1] >= 0)
394 close(u->pipe_fds[1]);
396 pthread_mutex_destroy(&u->mutex);
397 pthread_cond_destroy(&u->cond);