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>
18 #include <pulse/pulseaudio.h>
22 enum pulse_state pulse_state;
23 #define PULSE_STATE(s) do { pulse_state = s; DBG("Pulse: " #s); } while (0)
25 clist pulse_client_list, pulse_sink_list, pulse_sink_input_list;
27 static pa_context *pulse_ctx;
28 static struct main_timer pulse_connect_timer;
30 #define SET_STRING(_field, _val) do { if (!_field || strcmp(_field, _val)) { xfree(_field); _field = xstrdup(_val); } } while (0)
32 /*** Tracking of currently running asynchronous operations ***/
40 static clist pulse_op_list;
42 static struct pulse_op *pulse_op_new(void)
44 struct pulse_op *op = xmalloc_zero(sizeof(*op));
45 clist_add_tail(&pulse_op_list, &op->n);
49 static void pulse_op_done(struct pulse_op *op)
52 pa_operation_unref(op->o);
57 static void pulse_op_cancel_all(void)
60 while (op = (struct pulse_op *) clist_head(&pulse_op_list))
62 DBG("Pulse: Cancelling pending operation");
63 pa_operation_cancel(op->o);
68 #define PULSE_ASYNC_RUN(name, ...) do { struct pulse_op *_op = pulse_op_new(); _op->o = name(__VA_ARGS__, _op); } while (0)
69 #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)
71 static void pulse_success_cb(pa_context *ctx UNUSED, int success, void *userdata)
74 msg(L_ERROR, "Pulse: Failure reported");
75 pulse_op_done(userdata);
78 /*** Debugging dumps ***/
82 CLIST_FOR_EACH(struct pulse_client *, c, pulse_client_list)
83 DBG("## Client #%d: %s host=%s", c->idx, c->name, c->host);
85 CLIST_FOR_EACH(struct pulse_sink *, s, pulse_sink_list)
86 DBG("## 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 DBG("## 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 /*** Sink inputs ***/
110 #define HASH_NODE struct pulse_sink_input
111 #define HASH_PREFIX(x) pulse_sink_input_##x
112 #define HASH_KEY_ATOMIC idx
113 #define HASH_WANT_CLEANUP
114 #define HASH_WANT_LOOKUP
115 #define HASH_WANT_REMOVE
116 #define HASH_ZERO_FILL
117 #include <ucw/hashtable.h>
119 static void pulse_sink_input_cb(pa_context *ctx UNUSED, const pa_sink_input_info *i, int eol, void *userdata)
121 struct pulse_op *op = userdata;
127 PULSE_STATE(PS_ONLINE);
134 DBG("Pulse: SINK INPUT #%u: %s client=%d sink=%d chans=%d has_vol=%d vol_rw=%d volume=%u mute=%d",
135 i->index, i->name, i->client, i->sink, i->channel_map.channels, i->has_volume, i->volume_writable, i->volume.values[0], i->mute);
136 pulse_dump_proplist(i->proplist);
138 struct pulse_sink_input *s = pulse_sink_input_lookup(i->index);
139 if (!clist_is_linked(&s->n))
140 clist_add_tail(&pulse_sink_input_list, &s->n);
141 SET_STRING(s->name, i->name);
142 s->client_idx = i->client;
143 s->sink_idx = i->sink;
144 s->channels = i->channel_map.channels;
145 s->volume = pa_cvolume_avg(&i->volume);
150 static void pulse_sink_input_gone(int idx)
152 DBG("Pulse: REMOVE SINK INPUT #%d", idx);
153 struct pulse_sink_input *s = pulse_sink_input_lookup(idx);
155 pulse_sink_input_remove(s);
159 void pulse_sink_input_set_volume(int idx, pa_cvolume *cvol)
161 PULSE_ASYNC_RUN(pa_context_set_sink_input_volume, pulse_ctx, idx, cvol, pulse_success_cb);
164 void pulse_sink_input_set_mute(int idx, bool mute)
166 PULSE_ASYNC_RUN(pa_context_set_sink_input_mute, pulse_ctx, idx, mute, pulse_success_cb);
171 #define HASH_NODE struct pulse_sink
172 #define HASH_PREFIX(x) pulse_sink_##x
173 #define HASH_KEY_ATOMIC idx
174 #define HASH_WANT_CLEANUP
175 #define HASH_WANT_LOOKUP
176 #define HASH_WANT_REMOVE
177 #define HASH_ZERO_FILL
178 #include <ucw/hashtable.h>
180 static void pulse_sink_cb(pa_context *ctx, const pa_sink_info *i, int eol, void *userdata)
182 struct pulse_op *op = userdata;
188 PULSE_STATE(PS_GET_SINK_INPUTS);
189 PULSE_ASYNC_INIT_RUN(pa_context_get_sink_input_info_list, ctx, pulse_sink_input_cb);
195 DBG("Pulse: SINK #%u: %s (%s) flags=%08x channels=%u volume=%u mute=%d base_vol=%u state=%u",
196 i->index, i->name, i->description, i->flags, i->channel_map.channels, i->volume.values[0], i->mute, i->base_volume, i->state);
197 pulse_dump_proplist(i->proplist);
199 struct pulse_sink *s = pulse_sink_lookup(i->index);
200 if (!clist_is_linked(&s->n))
201 clist_add_tail(&pulse_sink_list, &s->n);
202 SET_STRING(s->name, i->name);
203 s->channels = i->channel_map.channels;
204 s->volume = pa_cvolume_avg(&i->volume);
205 s->base_volume = i->base_volume;
210 static void pulse_sink_gone(int idx)
212 DBG("Pulse: REMOVE SINK #%d", idx);
213 struct pulse_sink *s = pulse_sink_lookup(idx);
215 pulse_sink_remove(s);
219 struct pulse_sink *pulse_sink_by_name(const char *name)
221 CLIST_FOR_EACH(struct pulse_sink *, s, pulse_sink_list)
222 if (!strcmp(s->name, name))
227 void pulse_sink_set_volume(int idx, pa_cvolume *cvol)
229 PULSE_ASYNC_RUN(pa_context_set_sink_volume_by_index, pulse_ctx, idx, cvol, pulse_success_cb);
232 void pulse_sink_set_mute(int idx, bool mute)
234 PULSE_ASYNC_RUN(pa_context_set_sink_mute_by_index, pulse_ctx, idx, mute, pulse_success_cb);
239 #define HASH_NODE struct pulse_client
240 #define HASH_PREFIX(x) pulse_client_##x
241 #define HASH_KEY_ATOMIC idx
242 #define HASH_WANT_CLEANUP
243 #define HASH_WANT_LOOKUP
244 #define HASH_WANT_REMOVE
245 #define HASH_ZERO_FILL
246 #include <ucw/hashtable.h>
248 static void pulse_client_cb(pa_context *ctx, const pa_client_info *i, int eol, void *userdata)
250 struct pulse_op *op = userdata;
256 PULSE_STATE(PS_GET_SINKS);
257 PULSE_ASYNC_INIT_RUN(pa_context_get_sink_info_list, ctx, pulse_sink_cb);
263 char *host = stk_strdup(pa_proplist_gets(i->proplist, "application.process.host") ? : "?");
264 DBG("Pulse: CLIENT #%u: %s mod=%u drv=%s host=%s",
265 i->index, i->name, i->owner_module, i->driver, host);
266 pulse_dump_proplist(i->proplist);
268 struct pulse_client *c = pulse_client_lookup(i->index);
269 if (!clist_is_linked(&c->n))
270 clist_add_tail(&pulse_client_list, &c->n);
271 SET_STRING(c->name, i->name);
272 SET_STRING(c->host, host);
276 static void pulse_client_gone(int idx)
278 DBG("Pulse: REMOVE CLIENT #%d", idx);
279 struct pulse_client *c = pulse_client_lookup(idx);
281 pulse_client_remove(c);
285 struct pulse_client *pulse_client_by_idx(int idx)
287 return pulse_client_lookup(idx);
292 static void pulse_subscribe_done_cb(pa_context *ctx, int success, void *userdata)
294 pulse_op_done(userdata);
297 msg(L_ERROR, "pa_context_subscribe failed: success=%d", success);
299 PULSE_STATE(PS_GET_CLIENTS);
300 PULSE_ASYNC_INIT_RUN(pa_context_get_client_info_list, ctx, pulse_client_cb);
303 static void pulse_event_cb(pa_context *ctx, pa_subscription_event_type_t type, uint32_t idx, void *userdata UNUSED)
305 DBG("Pulse: SUBSCRIBE EVENT type=%08x idx=%u", type, idx);
307 uns object = type & PA_SUBSCRIPTION_EVENT_FACILITY_MASK;
308 uns action = type & PA_SUBSCRIPTION_EVENT_TYPE_MASK;
311 case PA_SUBSCRIPTION_EVENT_CLIENT:
312 if (action == PA_SUBSCRIPTION_EVENT_NEW || action == PA_SUBSCRIPTION_EVENT_CHANGE)
313 PULSE_ASYNC_RUN(pa_context_get_client_info, ctx, idx, pulse_client_cb);
314 else if (action == PA_SUBSCRIPTION_EVENT_REMOVE)
315 pulse_client_gone(idx);
317 case PA_SUBSCRIPTION_EVENT_SINK:
318 if (action == PA_SUBSCRIPTION_EVENT_NEW || action == PA_SUBSCRIPTION_EVENT_CHANGE)
319 PULSE_ASYNC_RUN(pa_context_get_sink_info_by_index, ctx, idx, pulse_sink_cb);
320 else if (action == PA_SUBSCRIPTION_EVENT_REMOVE)
321 pulse_sink_gone(idx);
323 case PA_SUBSCRIPTION_EVENT_SINK_INPUT:
324 if (action == PA_SUBSCRIPTION_EVENT_NEW || action == PA_SUBSCRIPTION_EVENT_CHANGE)
325 PULSE_ASYNC_RUN(pa_context_get_sink_input_info, ctx, idx, pulse_sink_input_cb);
326 else if (action == PA_SUBSCRIPTION_EVENT_REMOVE)
327 pulse_sink_input_gone(idx);
332 /*** Server state ***/
334 static void pulse_shutdown(void)
336 DBG("Pulse: Shutting down");
337 pulse_client_cleanup();
338 pulse_sink_cleanup();
339 pulse_sink_input_cleanup();
342 static void pulse_state_cb(pa_context *ctx, void *userdata UNUSED)
344 int state = pa_context_get_state(ctx);
345 DBG("Pulse: State callback, new state = %d", state);
346 if (state == PA_CONTEXT_READY)
348 if (pulse_state == PS_OFFLINE)
350 PULSE_STATE(PS_SUBSCRIBE);
351 pa_context_set_subscribe_callback(ctx, pulse_event_cb, NULL);
352 PULSE_ASYNC_INIT_RUN(pa_context_subscribe, ctx, PA_SUBSCRIPTION_MASK_ALL, pulse_subscribe_done_cb);
357 if (pulse_state != PS_OFFLINE)
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 DBG("Pulse: Connecting");
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);