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(__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(__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 CLIST_FOR_EACH(struct pulse_client *, c, pulse_client_list)
81 DBG("## Client #%d: %s host=%s", c->idx, c->name, c->host);
83 CLIST_FOR_EACH(struct pulse_sink *, s, pulse_sink_list)
84 DBG("## Sink #%d: %s channels=%u volume=%u base_vol=%u mute=%u",
85 s->idx, s->name, s->channels, s->volume, s->base_volume, s->mute);
87 CLIST_FOR_EACH(struct pulse_sink_input *, s, pulse_sink_input_list)
88 DBG("## Sink input #%d: %s client=%d sink=%d channels=%u volume=%u mute=%u",
89 s->idx, s->name, s->client_idx, s->sink_idx, s->channels, s->volume, s->mute);
92 static void pulse_dump_proplist(pa_proplist *pl UNUSED)
95 void *iterator = NULL;
98 while (key = pa_proplist_iterate(pl, &iterator))
100 const char *val = pa_proplist_gets(pl, key);
101 DBG(" %s = %s", key, val);
106 /*** Sink inputs ***/
108 #define HASH_NODE struct pulse_sink_input
109 #define HASH_PREFIX(x) pulse_sink_input_##x
110 #define HASH_KEY_ATOMIC idx
111 #define HASH_WANT_CLEANUP
112 #define HASH_WANT_LOOKUP
113 #define HASH_WANT_REMOVE
114 #define HASH_ZERO_FILL
115 #include <ucw/hashtable.h>
117 static void pulse_sink_input_cb(pa_context *ctx UNUSED, const pa_sink_input_info *i, int eol, void *userdata)
119 struct pulse_op *op = userdata;
125 PULSE_STATE(PS_ONLINE);
126 msg(L_INFO, "PulseAudio is ready");
133 DBG("Pulse: SINK INPUT #%u: %s client=%d sink=%d chans=%d has_vol=%d vol_rw=%d volume=%u mute=%d",
134 i->index, i->name, i->client, i->sink, i->channel_map.channels, i->has_volume, i->volume_writable, i->volume.values[0], i->mute);
135 pulse_dump_proplist(i->proplist);
137 struct pulse_sink_input *s = pulse_sink_input_lookup(i->index);
138 if (!clist_is_linked(&s->n))
139 clist_add_tail(&pulse_sink_input_list, &s->n);
140 SET_STRING(s->name, i->name);
141 s->client_idx = i->client;
142 s->sink_idx = i->sink;
143 s->channels = i->channel_map.channels;
144 s->volume = pa_cvolume_avg(&i->volume);
149 static void pulse_sink_input_gone(int idx)
151 DBG("Pulse: REMOVE SINK INPUT #%d", idx);
152 struct pulse_sink_input *s = pulse_sink_input_lookup(idx);
154 pulse_sink_input_remove(s);
158 void pulse_sink_input_set_volume(int idx, pa_cvolume *cvol)
160 PULSE_ASYNC_RUN(pa_context_set_sink_input_volume, pulse_ctx, idx, cvol, pulse_success_cb);
163 void pulse_sink_input_set_mute(int idx, bool mute)
165 PULSE_ASYNC_RUN(pa_context_set_sink_input_mute, pulse_ctx, idx, mute, pulse_success_cb);
170 #define HASH_NODE struct pulse_sink
171 #define HASH_PREFIX(x) pulse_sink_##x
172 #define HASH_KEY_ATOMIC idx
173 #define HASH_WANT_CLEANUP
174 #define HASH_WANT_LOOKUP
175 #define HASH_WANT_REMOVE
176 #define HASH_ZERO_FILL
177 #include <ucw/hashtable.h>
179 static void pulse_sink_cb(pa_context *ctx, const pa_sink_info *i, int eol, void *userdata)
181 struct pulse_op *op = userdata;
187 PULSE_STATE(PS_GET_SINK_INPUTS);
188 PULSE_ASYNC_INIT_RUN(pa_context_get_sink_input_info_list, ctx, pulse_sink_input_cb);
194 DBG("Pulse: SINK #%u: %s (%s) flags=%08x channels=%u volume=%u mute=%d base_vol=%u state=%u",
195 i->index, i->name, i->description, i->flags, i->channel_map.channels, i->volume.values[0], i->mute, i->base_volume, i->state);
196 pulse_dump_proplist(i->proplist);
198 struct pulse_sink *s = pulse_sink_lookup(i->index);
199 if (!clist_is_linked(&s->n))
200 clist_add_tail(&pulse_sink_list, &s->n);
201 SET_STRING(s->name, i->name);
202 s->channels = i->channel_map.channels;
203 s->volume = pa_cvolume_avg(&i->volume);
204 s->base_volume = i->base_volume;
209 static void pulse_sink_gone(int idx)
211 DBG("Pulse: REMOVE SINK #%d", idx);
212 struct pulse_sink *s = pulse_sink_lookup(idx);
214 pulse_sink_remove(s);
218 struct pulse_sink *pulse_sink_by_name(const char *name)
220 CLIST_FOR_EACH(struct pulse_sink *, s, pulse_sink_list)
221 if (!strcmp(s->name, name))
226 void pulse_sink_set_volume(int idx, pa_cvolume *cvol)
228 PULSE_ASYNC_RUN(pa_context_set_sink_volume_by_index, pulse_ctx, idx, cvol, pulse_success_cb);
231 void pulse_sink_set_mute(int idx, bool mute)
233 PULSE_ASYNC_RUN(pa_context_set_sink_mute_by_index, pulse_ctx, idx, mute, pulse_success_cb);
238 #define HASH_NODE struct pulse_client
239 #define HASH_PREFIX(x) pulse_client_##x
240 #define HASH_KEY_ATOMIC idx
241 #define HASH_WANT_CLEANUP
242 #define HASH_WANT_LOOKUP
243 #define HASH_WANT_REMOVE
244 #define HASH_ZERO_FILL
245 #include <ucw/hashtable.h>
247 static void pulse_client_cb(pa_context *ctx, const pa_client_info *i, int eol, void *userdata)
249 struct pulse_op *op = userdata;
255 PULSE_STATE(PS_GET_SINKS);
256 PULSE_ASYNC_INIT_RUN(pa_context_get_sink_info_list, ctx, pulse_sink_cb);
262 char *host = stk_strdup(pa_proplist_gets(i->proplist, "application.process.host") ? : "?");
263 DBG("Pulse: CLIENT #%u: %s mod=%u drv=%s host=%s",
264 i->index, i->name, i->owner_module, i->driver, host);
265 pulse_dump_proplist(i->proplist);
267 struct pulse_client *c = pulse_client_lookup(i->index);
268 if (!clist_is_linked(&c->n))
269 clist_add_tail(&pulse_client_list, &c->n);
270 SET_STRING(c->name, i->name);
271 SET_STRING(c->host, host);
275 static void pulse_client_gone(int idx)
277 DBG("Pulse: REMOVE CLIENT #%d", idx);
278 struct pulse_client *c = pulse_client_lookup(idx);
280 pulse_client_remove(c);
284 struct pulse_client *pulse_client_by_idx(int idx)
286 return pulse_client_lookup(idx);
291 static void pulse_subscribe_done_cb(pa_context *ctx, int success, void *userdata)
293 pulse_op_done(userdata);
296 msg(L_ERROR, "pa_context_subscribe failed: success=%d", success);
298 PULSE_STATE(PS_GET_CLIENTS);
299 PULSE_ASYNC_INIT_RUN(pa_context_get_client_info_list, ctx, pulse_client_cb);
302 static void pulse_event_cb(pa_context *ctx, pa_subscription_event_type_t type, uint32_t idx, void *userdata UNUSED)
304 DBG("Pulse: SUBSCRIBE EVENT type=%08x idx=%u", type, idx);
306 uns object = type & PA_SUBSCRIPTION_EVENT_FACILITY_MASK;
307 uns action = type & PA_SUBSCRIPTION_EVENT_TYPE_MASK;
310 case PA_SUBSCRIPTION_EVENT_CLIENT:
311 if (action == PA_SUBSCRIPTION_EVENT_NEW || action == PA_SUBSCRIPTION_EVENT_CHANGE)
312 PULSE_ASYNC_RUN(pa_context_get_client_info, ctx, idx, pulse_client_cb);
313 else if (action == PA_SUBSCRIPTION_EVENT_REMOVE)
314 pulse_client_gone(idx);
316 case PA_SUBSCRIPTION_EVENT_SINK:
317 if (action == PA_SUBSCRIPTION_EVENT_NEW || action == PA_SUBSCRIPTION_EVENT_CHANGE)
318 PULSE_ASYNC_RUN(pa_context_get_sink_info_by_index, ctx, idx, pulse_sink_cb);
319 else if (action == PA_SUBSCRIPTION_EVENT_REMOVE)
320 pulse_sink_gone(idx);
322 case PA_SUBSCRIPTION_EVENT_SINK_INPUT:
323 if (action == PA_SUBSCRIPTION_EVENT_NEW || action == PA_SUBSCRIPTION_EVENT_CHANGE)
324 PULSE_ASYNC_RUN(pa_context_get_sink_input_info, ctx, idx, pulse_sink_input_cb);
325 else if (action == PA_SUBSCRIPTION_EVENT_REMOVE)
326 pulse_sink_input_gone(idx);
331 /*** Server state ***/
333 static void pulse_shutdown(void)
335 DBG("Pulse: Shutting down");
336 pulse_client_cleanup();
337 pulse_sink_cleanup();
338 pulse_sink_input_cleanup();
341 static void pulse_state_cb(pa_context *ctx, void *userdata UNUSED)
343 int state = pa_context_get_state(ctx);
344 DBG("Pulse: State callback, new state = %d", state);
345 if (state == PA_CONTEXT_READY)
347 if (pulse_state == PS_OFFLINE)
349 PULSE_STATE(PS_SUBSCRIBE);
350 pa_context_set_subscribe_callback(ctx, pulse_event_cb, NULL);
351 PULSE_ASYNC_INIT_RUN(pa_context_subscribe, ctx, PA_SUBSCRIPTION_MASK_ALL, pulse_subscribe_done_cb);
356 if (pulse_state != PS_OFFLINE)
358 msg(L_INFO, "Lost connection to PulseAudio");
359 PULSE_STATE(PS_OFFLINE);
360 pulse_op_cancel_all();
364 if (state == PA_CONTEXT_FAILED && !timer_is_active(&pulse_connect_timer))
365 timer_add_rel(&pulse_connect_timer, 2000);
369 static void pulse_connect(struct main_timer *t)
371 msg(L_DEBUG, "Connecting to PulseAudio");
374 clist_init(&pulse_op_list);
375 clist_init(&pulse_client_list);
376 clist_init(&pulse_sink_list);
377 clist_init(&pulse_sink_input_list);
380 pulse_sink_input_init();
383 pa_context_unref(pulse_ctx);
384 pulse_ctx = pa_context_new(&pmain_api, "ursaryd");
386 pa_context_set_state_callback(pulse_ctx, pulse_state_cb, NULL);
387 pa_context_connect(pulse_ctx, NULL, PA_CONTEXT_NOAUTOSPAWN, NULL);
390 void pulse_init(void)
394 pulse_connect_timer.handler = pulse_connect;
395 timer_add_rel(&pulse_connect_timer, 0);