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 <polypcore/iochannel.h>
40 #include <polypcore/sink.h>
41 #include <polypcore/module.h>
42 #include <polypcore/util.h>
43 #include <polypcore/modargs.h>
44 #include <polypcore/xmalloc.h>
45 #include <polypcore/log.h>
46 #include <polyp/mainloop-api.h>
48 #include "module-jack-sink-symdef.h"
50 PA_MODULE_AUTHOR("Lennart Poettering")
51 PA_MODULE_DESCRIPTION("Jack Sink")
52 PA_MODULE_VERSION(PACKAGE_VERSION)
54 "sink_name=<name of sink> "
55 "server_name=<jack server name> "
56 "client_name=<jack client name> "
57 "channels=<number of channels> "
58 "connect=<connect ports?> "
59 "channel_map=<channel map>")
61 #define DEFAULT_SINK_NAME "jack_out"
71 jack_port_t* port[PA_CHANNELS_MAX];
72 jack_client_t *client;
74 pthread_mutex_t mutex;
77 void * buffer[PA_CHANNELS_MAX];
78 jack_nframes_t frames_requested;
82 pa_io_event *io_event;
84 jack_nframes_t frames_in_buffer;
85 jack_nframes_t timestamp;
88 static const char* const valid_modargs[] = {
98 static void stop_sink(struct userdata *u) {
101 jack_client_close(u->client);
103 u->core->mainloop->io_free(u->io_event);
105 pa_sink_disconnect(u->sink);
106 pa_sink_unref(u->sink);
108 pa_module_unload_request(u->module);
111 static void io_event_cb(pa_mainloop_api *m, pa_io_event *e, int fd, pa_io_event_flags_t flags, void *userdata) {
112 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_requested > 0) {
133 jack_nframes_t frame_idx;
136 fs = pa_frame_size(&u->sink->sample_spec);
138 pa_sink_render_full(u->sink, u->frames_requested * fs, &chunk);
140 for (frame_idx = 0; frame_idx < u->frames_requested; frame_idx ++) {
143 for (c = 0; c < u->channels; c++) {
144 float *s = ((float*) ((uint8_t*) chunk.memblock->data + chunk.index)) + (frame_idx * u->channels) + c;
145 float *d = ((float*) u->buffer[c]) + frame_idx;
151 pa_memblock_unref(chunk.memblock);
153 u->frames_requested = 0;
155 pthread_cond_signal(&u->cond);
158 pthread_mutex_unlock(&u->mutex);
161 static void request_render(struct userdata *u) {
165 assert(u->pipe_fds[1] >= 0);
166 write(u->pipe_fds[1], &c, 1);
169 static void jack_shutdown(void *arg) {
170 struct userdata *u = arg;
173 u->quit_requested = 1;
177 static int jack_process(jack_nframes_t nframes, void *arg) {
178 struct userdata *u = arg;
181 if (jack_transport_query(u->client, NULL) == JackTransportRolling) {
184 pthread_mutex_lock(&u->mutex);
186 u->frames_requested = nframes;
188 for (c = 0; c < u->channels; c++) {
189 u->buffer[c] = jack_port_get_buffer(u->port[c], nframes);
190 assert(u->buffer[c]);
195 pthread_cond_wait(&u->cond, &u->mutex);
197 u->frames_in_buffer = nframes;
198 u->timestamp = jack_get_current_transport_frame(u->client);
200 pthread_mutex_unlock(&u->mutex);
206 static pa_usec_t sink_get_latency_cb(pa_sink *s) {
208 jack_nframes_t n, l, d;
213 if (jack_transport_query(u->client, NULL) != JackTransportRolling)
216 n = jack_get_current_transport_frame(u->client);
218 if (n < u->timestamp)
221 d = n - u->timestamp;
222 l = jack_port_get_total_latency(u->client, u->port[0]) + u->frames_in_buffer;
227 return pa_bytes_to_usec((l - d) * pa_frame_size(&s->sample_spec), &s->sample_spec);
230 static void jack_error_func(const char*t) {
231 pa_log_warn(__FILE__": JACK error >%s<", t);
234 int pa__init(pa_core *c, pa_module*m) {
235 struct userdata *u = NULL;
238 pa_modargs *ma = NULL;
239 jack_status_t status;
240 const char *server_name, *client_name;
241 uint32_t channels = 0;
244 const char **ports = NULL, **p;
249 jack_set_error_function(jack_error_func);
251 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
252 pa_log(__FILE__": failed to parse module arguments.");
256 if (pa_modargs_get_value_boolean(ma, "connect", &connect) < 0) {
257 pa_log(__FILE__": failed to parse connect= argument.");
261 server_name = pa_modargs_get_value(ma, "server_name", NULL);
262 client_name = pa_modargs_get_value(ma, "client_name", "polypaudio");
264 u = pa_xnew0(struct userdata, 1);
268 u->pipe_fds[0] = u->pipe_fds[1] = -1;
270 pthread_mutex_init(&u->mutex, NULL);
271 pthread_cond_init(&u->cond, NULL);
273 if (pipe(u->pipe_fds) < 0) {
274 pa_log(__FILE__": pipe() failed: %s", strerror(errno));
278 pa_make_nonblock_fd(u->pipe_fds[1]);
280 if (!(u->client = jack_client_open(client_name, server_name ? JackServerName : JackNullOption, &status, server_name))) {
281 pa_log(__FILE__": jack_client_open() failed.");
285 ports = jack_get_ports(u->client, NULL, NULL, JackPortIsPhysical|JackPortIsInput);
288 for (p = ports; *p; p++)
292 channels = c->default_sample_spec.channels;
294 if (pa_modargs_get_value_u32(ma, "channels", &channels) < 0 || channels <= 0 || channels >= PA_CHANNELS_MAX) {
295 pa_log(__FILE__": failed to parse channels= argument.");
299 pa_channel_map_init_auto(&map, channels);
300 if (pa_modargs_get_channel_map(ma, &map) < 0 || map.channels != channels) {
301 pa_log(__FILE__": failed to parse channel_map= argument.");
305 pa_log_info(__FILE__": Successfully connected as '%s'", jack_get_client_name(u->client));
307 ss.channels = u->channels = channels;
308 ss.rate = jack_get_sample_rate(u->client);
309 ss.format = PA_SAMPLE_FLOAT32NE;
311 assert(pa_sample_spec_valid(&ss));
313 for (i = 0; i < ss.channels; i++) {
314 if (!(u->port[i] = jack_port_register(u->client, pa_channel_position_to_string(map.map[i]), JACK_DEFAULT_AUDIO_TYPE, JackPortIsOutput|JackPortIsTerminal, 0))) {
315 pa_log(__FILE__": jack_port_register() failed.");
320 if (!(u->sink = pa_sink_new(c, __FILE__, pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME), 0, &ss, &map))) {
321 pa_log(__FILE__": failed to create sink.");
325 u->sink->userdata = u;
326 pa_sink_set_owner(u->sink, m);
327 u->sink->description = pa_sprintf_malloc("Jack sink (%s)", jack_get_client_name(u->client));
328 u->sink->get_latency = sink_get_latency_cb;
330 jack_set_process_callback(u->client, jack_process, u);
331 jack_on_shutdown(u->client, jack_shutdown, u);
333 if (jack_activate(u->client)) {
334 pa_log(__FILE__": jack_activate() failed");
339 for (i = 0, p = ports; i < ss.channels; i++, p++) {
342 pa_log(__FILE__": not enough physical output ports, leaving unconnected.");
346 pa_log_info(__FILE__": connecting %s to %s", jack_port_name(u->port[i]), *p);
348 if (jack_connect(u->client, jack_port_name(u->port[i]), *p)) {
349 pa_log(__FILE__": failed to connect %s to %s, leaving unconnected.", jack_port_name(u->port[i]), *p);
356 u->io_event = c->mainloop->io_new(c->mainloop, u->pipe_fds[0], PA_IO_EVENT_INPUT, io_event_cb, u);
374 void pa__done(pa_core *c, pa_module*m) {
378 if (!(u = m->userdata))
382 jack_client_close(u->client);
385 c->mainloop->io_free(u->io_event);
388 pa_sink_disconnect(u->sink);
389 pa_sink_unref(u->sink);
392 if (u->pipe_fds[0] >= 0)
393 close(u->pipe_fds[0]);
394 if (u->pipe_fds[1] >= 0)
395 close(u->pipe_fds[1]);
397 pthread_mutex_destroy(&u->mutex);
398 pthread_cond_destroy(&u->cond);