2 * Asynchronous Interface to PulseAudio
4 * (c) 2014 Martin Mares <mj@ucw.cz>
10 #include <ucw/clists.h>
11 #include <ucw/mainloop.h>
12 #include <ucw/stkstring.h>
20 enum pulse_state pulse_state;
21 #define PULSE_STATE(s) do { pulse_state = s; DBG("Pulse: " #s); } while (0)
23 clist pulse_client_list, pulse_sink_list, pulse_sink_input_list;
25 static pa_context *pulse_ctx;
26 static struct main_timer pulse_connect_timer;
28 #define SET_STRING(_field, _val) do { if (!_field || strcmp(_field, _val)) { xfree(_field); _field = xstrdup(_val); } } while (0)
30 /*** Tracking of currently running asynchronous operations ***/
38 static clist pulse_op_list;
40 static struct pulse_op *pulse_op_new(void)
42 struct pulse_op *op = xmalloc_zero(sizeof(*op));
43 clist_add_tail(&pulse_op_list, &op->n);
47 static void pulse_op_done(struct pulse_op *op)
50 pa_operation_unref(op->o);
55 static void pulse_op_cancel_all(void)
58 while (op = (struct pulse_op *) clist_head(&pulse_op_list))
60 DBG("Pulse: Cancelling pending operation");
61 pa_operation_cancel(op->o);
66 #define PULSE_ASYNC_RUN(name, ...) do { struct pulse_op *_op = pulse_op_new(); _op->o = name(pulse_ctx, __VA_ARGS__, _op); } while (0)
67 #define PULSE_ASYNC_INIT_RUN(name, ...) do { struct pulse_op *_op = pulse_op_new(); _op->is_init = 1; _op->o = name(pulse_ctx, __VA_ARGS__, _op); } while (0)
69 static void pulse_success_cb(pa_context *ctx UNUSED, int success, void *userdata)
72 msg(L_ERROR, "Pulse: Failure reported");
73 pulse_op_done(userdata);
76 /*** Debugging dumps ***/
80 msg(L_DEBUG, "## Server: default_sink=%s", pulse_default_sink_name);
82 CLIST_FOR_EACH(struct pulse_client *, c, pulse_client_list)
83 msg(L_DEBUG, "## Client #%d: %s host=%s", c->idx, c->name, c->host);
85 CLIST_FOR_EACH(struct pulse_sink *, s, pulse_sink_list)
86 msg(L_DEBUG, "## Sink #%d: %s channels=%u volume=%u base_vol=%u mute=%u",
87 s->idx, s->name, s->channels, s->volume, s->base_volume, s->mute);
89 CLIST_FOR_EACH(struct pulse_sink_input *, s, pulse_sink_input_list)
90 msg(L_DEBUG, "## Sink input #%d: %s client=%d sink=%d channels=%u volume=%u mute=%u",
91 s->idx, s->name, s->client_idx, s->sink_idx, s->channels, s->volume, s->mute);
94 static void pulse_dump_proplist(pa_proplist *pl UNUSED)
97 void *iterator = NULL;
100 while (key = pa_proplist_iterate(pl, &iterator))
102 const char *val = pa_proplist_gets(pl, key);
103 DBG(" %s = %s", key, val);
108 /*** Server state ***/
110 char *pulse_default_sink_name;
112 static void pulse_server_cb(pa_context *ctx UNUSED, const pa_server_info *i, void *userdata)
114 struct pulse_op *op = userdata;
116 DBG("Pulse: SERVER default_sink=%s", i->default_sink_name);
117 SET_STRING(pulse_default_sink_name, i->default_sink_name);
121 PULSE_STATE(PS_ONLINE);
122 msg(L_INFO, "PulseAudio is ready");
128 void pulse_server_set_default_sink(const char *name)
130 PULSE_ASYNC_RUN(pa_context_set_default_sink, name, pulse_success_cb);
133 /*** Sink inputs ***/
135 #define HASH_NODE struct pulse_sink_input
136 #define HASH_PREFIX(x) pulse_sink_input_##x
137 #define HASH_KEY_ATOMIC idx
138 #define HASH_WANT_CLEANUP
139 #define HASH_WANT_LOOKUP
140 #define HASH_WANT_REMOVE
141 #define HASH_ZERO_FILL
142 #include <ucw/hashtable.h>
144 static void pulse_sink_input_cb(pa_context *ctx UNUSED, const pa_sink_input_info *i, int eol, void *userdata)
146 struct pulse_op *op = userdata;
152 PULSE_STATE(PS_GET_SERVER);
153 PULSE_ASYNC_INIT_RUN(pa_context_get_server_info, pulse_server_cb);
159 DBG("Pulse: SINK INPUT #%u: %s client=%d sink=%d chans=%d has_vol=%d vol_rw=%d volume=%u mute=%d",
160 i->index, i->name, i->client, i->sink, i->channel_map.channels, i->has_volume, i->volume_writable, i->volume.values[0], i->mute);
161 pulse_dump_proplist(i->proplist);
163 struct pulse_sink_input *s = pulse_sink_input_lookup(i->index);
164 if (!clist_is_linked(&s->n))
165 clist_add_tail(&pulse_sink_input_list, &s->n);
166 SET_STRING(s->name, i->name);
167 s->client_idx = i->client;
168 s->sink_idx = i->sink;
169 s->channels = i->channel_map.channels;
170 s->volume = pa_cvolume_avg(&i->volume);
175 static void pulse_sink_input_gone(int idx)
177 DBG("Pulse: REMOVE SINK INPUT #%d", idx);
178 struct pulse_sink_input *s = pulse_sink_input_lookup(idx);
180 pulse_sink_input_remove(s);
184 void pulse_sink_input_set_volume(int idx, pa_cvolume *cvol)
186 PULSE_ASYNC_RUN(pa_context_set_sink_input_volume, idx, cvol, pulse_success_cb);
189 void pulse_sink_input_set_mute(int idx, bool mute)
191 PULSE_ASYNC_RUN(pa_context_set_sink_input_mute, idx, mute, pulse_success_cb);
196 #define HASH_NODE struct pulse_sink
197 #define HASH_PREFIX(x) pulse_sink_##x
198 #define HASH_KEY_ATOMIC idx
199 #define HASH_WANT_CLEANUP
200 #define HASH_WANT_LOOKUP
201 #define HASH_WANT_REMOVE
202 #define HASH_ZERO_FILL
203 #include <ucw/hashtable.h>
205 static void pulse_sink_cb(pa_context *ctx UNUSED, const pa_sink_info *i, int eol, void *userdata)
207 struct pulse_op *op = userdata;
213 PULSE_STATE(PS_GET_SINK_INPUTS);
214 PULSE_ASYNC_INIT_RUN(pa_context_get_sink_input_info_list, pulse_sink_input_cb);
220 DBG("Pulse: SINK #%u: %s (%s) flags=%08x channels=%u volume=%u mute=%d base_vol=%u state=%u",
221 i->index, i->name, i->description, i->flags, i->channel_map.channels, i->volume.values[0], i->mute, i->base_volume, i->state);
222 pulse_dump_proplist(i->proplist);
224 struct pulse_sink *s = pulse_sink_lookup(i->index);
225 if (!clist_is_linked(&s->n))
226 clist_add_tail(&pulse_sink_list, &s->n);
227 SET_STRING(s->name, i->name);
228 s->channels = i->channel_map.channels;
229 s->volume = pa_cvolume_avg(&i->volume);
230 s->base_volume = i->base_volume;
235 static void pulse_sink_gone(int idx)
237 DBG("Pulse: REMOVE SINK #%d", idx);
238 struct pulse_sink *s = pulse_sink_lookup(idx);
240 pulse_sink_remove(s);
244 struct pulse_sink *pulse_sink_by_name(const char *name)
246 CLIST_FOR_EACH(struct pulse_sink *, s, pulse_sink_list)
247 if (!strcmp(s->name, name))
252 void pulse_sink_set_volume(int idx, pa_cvolume *cvol)
254 PULSE_ASYNC_RUN(pa_context_set_sink_volume_by_index, idx, cvol, pulse_success_cb);
257 void pulse_sink_set_mute(int idx, bool mute)
259 PULSE_ASYNC_RUN(pa_context_set_sink_mute_by_index, idx, mute, pulse_success_cb);
264 #define HASH_NODE struct pulse_client
265 #define HASH_PREFIX(x) pulse_client_##x
266 #define HASH_KEY_ATOMIC idx
267 #define HASH_WANT_CLEANUP
268 #define HASH_WANT_LOOKUP
269 #define HASH_WANT_REMOVE
270 #define HASH_ZERO_FILL
271 #include <ucw/hashtable.h>
273 static void pulse_client_cb(pa_context *ctx UNUSED, const pa_client_info *i, int eol, void *userdata)
275 struct pulse_op *op = userdata;
281 PULSE_STATE(PS_GET_SINKS);
282 PULSE_ASYNC_INIT_RUN(pa_context_get_sink_info_list, pulse_sink_cb);
288 char *host = stk_strdup(pa_proplist_gets(i->proplist, "application.process.host") ? : "?");
289 DBG("Pulse: CLIENT #%u: %s mod=%u drv=%s host=%s",
290 i->index, i->name, i->owner_module, i->driver, host);
291 pulse_dump_proplist(i->proplist);
293 struct pulse_client *c = pulse_client_lookup(i->index);
294 if (!clist_is_linked(&c->n))
295 clist_add_tail(&pulse_client_list, &c->n);
296 SET_STRING(c->name, i->name);
297 SET_STRING(c->host, host);
301 static void pulse_client_gone(int idx)
303 DBG("Pulse: REMOVE CLIENT #%d", idx);
304 struct pulse_client *c = pulse_client_lookup(idx);
306 pulse_client_remove(c);
310 struct pulse_client *pulse_client_by_idx(int idx)
312 return pulse_client_lookup(idx);
317 static void pulse_subscribe_done_cb(pa_context *ctx UNUSED, int success, void *userdata)
319 pulse_op_done(userdata);
322 msg(L_ERROR, "pa_context_subscribe failed: success=%d", success);
324 PULSE_STATE(PS_GET_CLIENTS);
325 PULSE_ASYNC_INIT_RUN(pa_context_get_client_info_list, pulse_client_cb);
328 static void pulse_event_cb(pa_context *ctx UNUSED, pa_subscription_event_type_t type, uint32_t idx, void *userdata UNUSED)
330 DBG("Pulse: SUBSCRIBE EVENT type=%08x idx=%u", type, idx);
332 uns object = type & PA_SUBSCRIPTION_EVENT_FACILITY_MASK;
333 uns action = type & PA_SUBSCRIPTION_EVENT_TYPE_MASK;
336 case PA_SUBSCRIPTION_EVENT_CLIENT:
337 if (action == PA_SUBSCRIPTION_EVENT_NEW || action == PA_SUBSCRIPTION_EVENT_CHANGE)
338 PULSE_ASYNC_RUN(pa_context_get_client_info, idx, pulse_client_cb);
339 else if (action == PA_SUBSCRIPTION_EVENT_REMOVE)
340 pulse_client_gone(idx);
342 case PA_SUBSCRIPTION_EVENT_SINK:
343 if (action == PA_SUBSCRIPTION_EVENT_NEW || action == PA_SUBSCRIPTION_EVENT_CHANGE)
344 PULSE_ASYNC_RUN(pa_context_get_sink_info_by_index, idx, pulse_sink_cb);
345 else if (action == PA_SUBSCRIPTION_EVENT_REMOVE)
346 pulse_sink_gone(idx);
348 case PA_SUBSCRIPTION_EVENT_SINK_INPUT:
349 if (action == PA_SUBSCRIPTION_EVENT_NEW || action == PA_SUBSCRIPTION_EVENT_CHANGE)
350 PULSE_ASYNC_RUN(pa_context_get_sink_input_info, idx, pulse_sink_input_cb);
351 else if (action == PA_SUBSCRIPTION_EVENT_REMOVE)
352 pulse_sink_input_gone(idx);
354 case PA_SUBSCRIPTION_EVENT_SERVER:
355 if (action == PA_SUBSCRIPTION_EVENT_CHANGE)
356 PULSE_ASYNC_RUN(pa_context_get_server_info, pulse_server_cb);
361 /*** Server state ***/
363 static void pulse_shutdown(void)
365 DBG("Pulse: Shutting down");
366 pulse_client_cleanup();
367 pulse_sink_cleanup();
368 pulse_sink_input_cleanup();
371 static void pulse_state_cb(pa_context *ctx, void *userdata UNUSED)
373 int state = pa_context_get_state(ctx);
374 DBG("Pulse: State callback, new state = %d", state);
375 if (state == PA_CONTEXT_READY)
377 if (pulse_state == PS_OFFLINE)
379 PULSE_STATE(PS_SUBSCRIBE);
380 pa_context_set_subscribe_callback(ctx, pulse_event_cb, NULL);
381 PULSE_ASYNC_INIT_RUN(pa_context_subscribe, PA_SUBSCRIPTION_MASK_ALL, pulse_subscribe_done_cb);
386 if (pulse_state != PS_OFFLINE)
388 msg(L_INFO, "Lost connection to PulseAudio");
389 PULSE_STATE(PS_OFFLINE);
390 pulse_op_cancel_all();
394 if (state == PA_CONTEXT_FAILED && !timer_is_active(&pulse_connect_timer))
395 timer_add_rel(&pulse_connect_timer, 2000);
399 static void pulse_connect(struct main_timer *t)
401 msg(L_DEBUG, "Connecting to PulseAudio");
404 clist_init(&pulse_op_list);
405 clist_init(&pulse_client_list);
406 clist_init(&pulse_sink_list);
407 clist_init(&pulse_sink_input_list);
410 pulse_sink_input_init();
413 pa_context_unref(pulse_ctx);
414 pulse_ctx = pa_context_new(&pmain_api, "ursaryd");
416 pa_context_set_state_callback(pulse_ctx, pulse_state_cb, NULL);
417 pa_context_connect(pulse_ctx, NULL, PA_CONTEXT_NOAUTOSPAWN, NULL);
420 void pulse_init(void)
424 pulse_connect_timer.handler = pulse_connect;
425 timer_add_rel(&pulse_connect_timer, 0);