-static void output_free(struct output *o);
-static int output_create_sink_input(struct output *o);
-
-static void adjust_rates(struct userdata *u) {
- struct output *o;
- pa_usec_t max_sink_latency = 0, min_total_latency = (pa_usec_t) -1, target_latency, avg_total_latency = 0;
- uint32_t base_rate;
- uint32_t idx;
- unsigned n = 0;
-
- pa_assert(u);
- pa_sink_assert_ref(u->sink);
-
- if (pa_idxset_size(u->outputs) <= 0)
- return;
-
- if (!PA_SINK_IS_OPENED(pa_sink_get_state(u->sink)))
- return;
-
- for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx)) {
- pa_usec_t sink_latency;
-
- if (!o->sink_input || !PA_SINK_IS_OPENED(pa_sink_get_state(o->sink)))
- continue;
-
- o->total_latency = pa_sink_input_get_latency(o->sink_input, &sink_latency);
- o->total_latency += sink_latency;
-
- if (sink_latency > max_sink_latency)
- max_sink_latency = sink_latency;
-
- if (min_total_latency == (pa_usec_t) -1 || o->total_latency < min_total_latency)
- min_total_latency = o->total_latency;
-
- avg_total_latency += o->total_latency;
- n++;
- }
-
- if (min_total_latency == (pa_usec_t) -1)
- return;
-
- avg_total_latency /= n;
-
- target_latency = max_sink_latency > min_total_latency ? max_sink_latency : min_total_latency;
-
- pa_log_info("[%s] avg total latency is %0.2f msec.", u->sink->name, (double) avg_total_latency / PA_USEC_PER_MSEC);
- pa_log_info("[%s] target latency is %0.2f msec.", u->sink->name, (double) target_latency / PA_USEC_PER_MSEC);
-
- base_rate = u->sink->sample_spec.rate;
-
- for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx)) {
- uint32_t r = base_rate;
-
- if (!o->sink_input || !PA_SINK_IS_OPENED(pa_sink_get_state(o->sink)))
- continue;
-
- if (o->total_latency < target_latency)
- r -= (uint32_t) ((((double) (target_latency - o->total_latency))/(double)u->adjust_time)*(double)r/PA_USEC_PER_SEC);
- else if (o->total_latency > target_latency)
- r += (uint32_t) ((((double) (o->total_latency - target_latency))/(double)u->adjust_time)*(double)r/PA_USEC_PER_SEC);
-
- if (r < (uint32_t) (base_rate*0.9) || r > (uint32_t) (base_rate*1.1)) {
- pa_log_warn("[%s] sample rates too different, not adjusting (%u vs. %u).", pa_proplist_gets(o->sink_input->proplist, PA_PROP_MEDIA_NAME), base_rate, r);
- pa_sink_input_set_rate(o->sink_input, base_rate);
- } else {
- pa_log_info("[%s] new rate is %u Hz; ratio is %0.3f; latency is %0.0f usec.", pa_proplist_gets(o->sink_input->proplist, PA_PROP_MEDIA_NAME), r, (double) r / base_rate, (float) o->total_latency);
- pa_sink_input_set_rate(o->sink_input, r);
- }
- }
-
- pa_asyncmsgq_send(u->sink->asyncmsgq, PA_MSGOBJECT(u->sink), SINK_MESSAGE_UPDATE_LATENCY, NULL, (int64_t) avg_total_latency, NULL);
-}
-
-static void time_callback(pa_mainloop_api*a, pa_time_event* e, const struct timeval *tv, void *userdata) {
- struct userdata *u = userdata;
- struct timeval n;
-
- pa_assert(u);
- pa_assert(a);
- pa_assert(u->time_event == e);
-
- adjust_rates(u);
-
- pa_gettimeofday(&n);
- n.tv_sec += (time_t) u->adjust_time;
- u->sink->core->mainloop->time_restart(e, &n);
-}
-
-static void process_render_null(struct userdata *u, pa_usec_t now) {
- size_t ate = 0;
- pa_assert(u);
-
- if (u->thread_info.in_null_mode)
- u->thread_info.timestamp = now;
-
- while (u->thread_info.timestamp < now + u->block_usec) {
- pa_memchunk chunk;
-
- pa_sink_render(u->sink, u->sink->thread_info.max_request, &chunk);
- pa_memblock_unref(chunk.memblock);
-
- u->thread_info.counter += chunk.length;
-
-/* pa_log_debug("Ate %lu bytes.", (unsigned long) chunk.length); */
- u->thread_info.timestamp += pa_bytes_to_usec(chunk.length, &u->sink->sample_spec);
-
- ate += chunk.length;
-
- if (ate >= u->sink->thread_info.max_request)
- break;
- }
-
-/* pa_log_debug("Ate in sum %lu bytes (of %lu)", (unsigned long) ate, (unsigned long) nbytes); */
-
- pa_smoother_put(u->thread_info.smoother, now,
- pa_bytes_to_usec(u->thread_info.counter, &u->sink->sample_spec) - (u->thread_info.timestamp - now));
-}
-
-static void thread_func(void *userdata) {
- struct userdata *u = userdata;
-
- pa_assert(u);
-
- pa_log_debug("Thread starting up");
-
- if (u->core->realtime_scheduling)
- pa_make_realtime(u->core->realtime_priority+1);
-
- pa_thread_mq_install(&u->thread_mq);
- pa_rtpoll_install(u->rtpoll);
-
- u->thread_info.timestamp = pa_rtclock_usec();
- u->thread_info.in_null_mode = FALSE;
-
- for (;;) {
- int ret;
-
- if (PA_SINK_IS_OPENED(u->sink->thread_info.state))
- if (u->sink->thread_info.rewind_requested)
- pa_sink_process_rewind(u->sink, 0);
-
- /* If no outputs are connected, render some data and drop it immediately. */
- if (PA_SINK_IS_OPENED(u->sink->thread_info.state) && !u->thread_info.active_outputs) {
- pa_usec_t now;
-
- now = pa_rtclock_usec();
-
- if (!u->thread_info.in_null_mode || u->thread_info.timestamp <= now)
- process_render_null(u, now);
-
- pa_rtpoll_set_timer_absolute(u->rtpoll, u->thread_info.timestamp);
- u->thread_info.in_null_mode = TRUE;
- } else {
- pa_rtpoll_set_timer_disabled(u->rtpoll);
- u->thread_info.in_null_mode = FALSE;
- }
-
- /* Hmm, nothing to do. Let's sleep */
- if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0) {
- pa_log_info("pa_rtpoll_run() = %i", ret);
- goto fail;
- }
-
- if (ret == 0)
- goto finish;
- }
-
-fail:
- /* If this was no regular exit from the loop we have to continue
- * processing messages until we received PA_MESSAGE_SHUTDOWN */
- pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
- pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
-
-finish:
- pa_log_debug("Thread shutting down");
-}
-
-/* Called from I/O thread context */
-static void render_memblock(struct userdata *u, struct output *o, size_t length) {
- pa_assert(u);
- pa_assert(o);
-
- /* We are run by the sink thread, on behalf of an output (o). The
- * output is waiting for us, hence it is safe to access its
- * mainblockq and asyncmsgq directly. */
-
- /* If we are not running, we cannot produce any data */
- if (!pa_atomic_load(&u->thread_info.running))
- return;
-
- /* Maybe there's some data in the requesting output's queue
- * now? */
- while (pa_asyncmsgq_process_one(o->inq) > 0)
- ;
-
- /* Ok, now let's prepare some data if we really have to */
- while (!pa_memblockq_is_readable(o->memblockq)) {
- struct output *j;
- pa_memchunk chunk;
-
- /* Render data! */
- pa_sink_render(u->sink, length, &chunk);
-
- u->thread_info.counter += chunk.length;
-
- /* OK, let's send this data to the other threads */
- for (j = u->thread_info.active_outputs; j; j = j->next)
-
- /* Send to other outputs, which are not the requesting
- * one */
-
- if (j != o)
- pa_asyncmsgq_post(j->inq, PA_MSGOBJECT(j->sink_input), SINK_INPUT_MESSAGE_POST, NULL, 0, &chunk, NULL);
-
- /* And place it directly into the requesting output's queue */
- if (o)
- pa_memblockq_push_align(o->memblockq, &chunk);
-
- pa_memblock_unref(chunk.memblock);
- }
-}
-
-/* Called from I/O thread context */
-static void request_memblock(struct output *o, size_t length) {
- pa_assert(o);
- pa_sink_input_assert_ref(o->sink_input);
- pa_sink_assert_ref(o->userdata->sink);
-
- /* If another thread already prepared some data we received
- * the data over the asyncmsgq, hence let's first process
- * it. */
- while (pa_asyncmsgq_process_one(o->inq) > 0)
- ;
-
- /* Check whether we're now readable */
- if (pa_memblockq_is_readable(o->memblockq))
- return;
-
- /* OK, we need to prepare new data, but only if the sink is actually running */
- if (pa_atomic_load(&o->userdata->thread_info.running))
- pa_asyncmsgq_send(o->outq, PA_MSGOBJECT(o->userdata->sink), SINK_MESSAGE_NEED, o, (int64_t) length, NULL);
-}
-
-/* Called from I/O thread context */
-static int sink_input_pop_cb(pa_sink_input *i, size_t nbytes, pa_memchunk *chunk) {
- struct output *o;
-
- pa_sink_input_assert_ref(i);
- pa_assert_se(o = i->userdata);
-
- /* If necessary, get some new data */
- request_memblock(o, nbytes);
-
- if (pa_memblockq_peek(o->memblockq, chunk) < 0)
- return -1;
-
- pa_memblockq_drop(o->memblockq, chunk->length);
- return 0;
-}
-
-/* Called from I/O thread context */
-static void sink_input_process_rewind_cb(pa_sink_input *i, size_t nbytes) {
- struct output *o;
-
- pa_sink_input_assert_ref(i);
- pa_assert_se(o = i->userdata);
-
- pa_memblockq_rewind(o->memblockq, nbytes);
-}
-
-/* Called from I/O thread context */
-static void sink_input_update_max_rewind_cb(pa_sink_input *i, size_t nbytes) {
- struct output *o;
-
- pa_sink_input_assert_ref(i);
- pa_assert_se(o = i->userdata);
-
- pa_memblockq_set_maxrewind(o->memblockq, nbytes);
-}
-
-/* Called from I/O thread context */
-static void sink_input_update_max_request_cb(pa_sink_input *i, size_t nbytes) {
- struct output *o;
-
- pa_sink_input_assert_ref(i);
- pa_assert_se(o = i->userdata);
-
- if (pa_atomic_load(&o->max_request) == (int) nbytes)
- return;
-
- pa_atomic_store(&o->max_request, (int) nbytes);
-
- pa_asyncmsgq_post(o->outq, PA_MSGOBJECT(o->userdata->sink), SINK_MESSAGE_UPDATE_MAX_REQUEST, NULL, 0, NULL, NULL);
-}
-
-/* Called from I/O thread context */
-static void sink_input_attach_cb(pa_sink_input *i) {
- struct output *o;
-
- pa_sink_input_assert_ref(i);
- pa_assert_se(o = i->userdata);
-
- /* Set up the queue from the sink thread to us */
- pa_assert(!o->inq_rtpoll_item_read && !o->outq_rtpoll_item_write);
-
- o->inq_rtpoll_item_read = pa_rtpoll_item_new_asyncmsgq_read(
- i->sink->rtpoll,
- PA_RTPOLL_LATE, /* This one is not that important, since we check for data in _peek() anyway. */
- o->inq);
-
- o->outq_rtpoll_item_write = pa_rtpoll_item_new_asyncmsgq_write(
- i->sink->rtpoll,
- PA_RTPOLL_EARLY,
- o->outq);
-}
-
-/* Called from I/O thread context */
-static void sink_input_detach_cb(pa_sink_input *i) {
- struct output *o;
-
- pa_sink_input_assert_ref(i);
- pa_assert_se(o = i->userdata);
-
- /* Shut down the queue from the sink thread to us */
- pa_assert(o->inq_rtpoll_item_read && o->outq_rtpoll_item_write);
-
- pa_rtpoll_item_free(o->inq_rtpoll_item_read);
- o->inq_rtpoll_item_read = NULL;
-
- pa_rtpoll_item_free(o->outq_rtpoll_item_write);
- o->outq_rtpoll_item_write = NULL;
-}
-
-/* Called from main context */
-static void sink_input_kill_cb(pa_sink_input *i) {
- struct output *o;
-
- pa_sink_input_assert_ref(i);
- pa_assert(o = i->userdata);
-
- pa_module_unload_request(o->userdata->module, TRUE);
- output_free(o);
-}
-
-/* Called from IO thread context */
-static void sink_input_state_change_cb(pa_sink_input *i, pa_sink_input_state_t state) {
- struct userdata *u;
-
- pa_sink_input_assert_ref(i);
- pa_assert_se(u = i->userdata);
-
- /* If we are added for the first time, ask for a rewinding so that
- * we are heard right-away. */
- if (PA_SINK_INPUT_IS_LINKED(state) &&
- i->thread_info.state == PA_SINK_INPUT_INIT)
- pa_sink_input_request_rewind(i, 0, FALSE, TRUE);
-}
-
-/* Called from thread context */
-static int sink_input_process_msg(pa_msgobject *obj, int code, void *data, int64_t offset, pa_memchunk *chunk) {
- struct output *o = PA_SINK_INPUT(obj)->userdata;
-
- switch (code) {
-
- case PA_SINK_INPUT_MESSAGE_GET_LATENCY: {
- pa_usec_t *r = data;
-
- *r = pa_bytes_to_usec(pa_memblockq_get_length(o->memblockq), &o->sink_input->sample_spec);
-
- /* Fall through, the default handler will add in the extra
- * latency added by the resampler */
- break;
- }
-
- case SINK_INPUT_MESSAGE_POST:
-
- if (PA_SINK_IS_OPENED(o->sink_input->sink->thread_info.state))
- pa_memblockq_push_align(o->memblockq, chunk);
- else
- pa_memblockq_flush_write(o->memblockq);
-
- return 0;
- }
-
- return pa_sink_input_process_msg(obj, code, data, offset, chunk);
-}
-
-/* Called from main context */
-static void disable_output(struct output *o) {
- pa_assert(o);
-
- if (!o->sink_input)
- return;
-
- pa_sink_input_unlink(o->sink_input);
- pa_asyncmsgq_send(o->userdata->sink->asyncmsgq, PA_MSGOBJECT(o->userdata->sink), SINK_MESSAGE_REMOVE_OUTPUT, o, 0, NULL);
- pa_sink_input_unref(o->sink_input);
- o->sink_input = NULL;
-}
-
-/* Called from main context */
-static void enable_output(struct output *o) {
- pa_assert(o);
-
- if (o->sink_input)
- return;
-
- if (output_create_sink_input(o) >= 0) {
-
- pa_memblockq_flush_write(o->memblockq);
-
- pa_sink_input_put(o->sink_input);
-
- if (o->userdata->sink && PA_SINK_IS_LINKED(pa_sink_get_state(o->userdata->sink)))
- pa_asyncmsgq_send(o->userdata->sink->asyncmsgq, PA_MSGOBJECT(o->userdata->sink), SINK_MESSAGE_ADD_OUTPUT, o, 0, NULL);
- }
-}
-
-/* Called from main context */
-static void suspend(struct userdata *u) {
- struct output *o;
- uint32_t idx;
-
- pa_assert(u);
-
- /* Let's suspend by unlinking all streams */
- for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx))
- disable_output(o);
-
- pa_log_info("Device suspended...");
-}
-
-/* Called from main context */
-static void unsuspend(struct userdata *u) {
- struct output *o;
- uint32_t idx;
-
- pa_assert(u);
-
- /* Let's resume */
- for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx)) {
-
- pa_sink_suspend(o->sink, FALSE);
-
- if (PA_SINK_IS_OPENED(pa_sink_get_state(o->sink)))
- enable_output(o);
- }
-
- pa_log_info("Resumed successfully...");
-}
-
-/* Called from main context */
-static int sink_set_state(pa_sink *sink, pa_sink_state_t state) {
- struct userdata *u;
-
- pa_sink_assert_ref(sink);
- pa_assert_se(u = sink->userdata);
-
- /* Please note that in contrast to the ALSA modules we call
- * suspend/unsuspend from main context here! */
-
- switch (state) {
- case PA_SINK_SUSPENDED:
- pa_assert(PA_SINK_IS_OPENED(pa_sink_get_state(u->sink)));
-
- suspend(u);
- break;
-
- case PA_SINK_IDLE:
- case PA_SINK_RUNNING:
-
- if (pa_sink_get_state(u->sink) == PA_SINK_SUSPENDED)
- unsuspend(u);
-
- break;
-
- case PA_SINK_UNLINKED:
- case PA_SINK_INIT:
- ;
- }
-
- return 0;
-}
-
-/* Called from IO context */
-static void update_max_request(struct userdata *u) {
- size_t max_request = 0;
- struct output *o;
-
- for (o = u->thread_info.active_outputs; o; o = o->next) {
- size_t mr = (size_t) pa_atomic_load(&o->max_request);
-
- if (mr > max_request)
- max_request = mr;
- }
-
- if (max_request <= 0)
- max_request = pa_usec_to_bytes(u->block_usec, &u->sink->sample_spec);
-
- pa_sink_set_max_request(u->sink, max_request);
-}
-
-/* Called from thread context of the io thread */
-static int sink_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
- struct userdata *u = PA_SINK(o)->userdata;
-
- switch (code) {
-
- case PA_SINK_MESSAGE_SET_STATE:
- pa_atomic_store(&u->thread_info.running, PA_PTR_TO_UINT(data) == PA_SINK_RUNNING);
-
- if (PA_PTR_TO_UINT(data) == PA_SINK_SUSPENDED)
- pa_smoother_pause(u->thread_info.smoother, pa_rtclock_usec());
- else
- pa_smoother_resume(u->thread_info.smoother, pa_rtclock_usec());
-
- break;
-
- case PA_SINK_MESSAGE_GET_LATENCY: {
- pa_usec_t x, y, c, *delay = data;
-
- x = pa_rtclock_usec();
- y = pa_smoother_get(u->thread_info.smoother, x);
-
- c = pa_bytes_to_usec(u->thread_info.counter, &u->sink->sample_spec);
-
- if (y < c)
- *delay = c - y;
- else
- *delay = 0;
-
- return 0;
- }
-
- case SINK_MESSAGE_ADD_OUTPUT: {
- struct output *op = data;
-
- PA_LLIST_PREPEND(struct output, u->thread_info.active_outputs, op);
-
- pa_assert(!op->outq_rtpoll_item_read && !op->inq_rtpoll_item_write);
-
- op->outq_rtpoll_item_read = pa_rtpoll_item_new_asyncmsgq_read(
- u->rtpoll,
- PA_RTPOLL_EARLY-1, /* This item is very important */
- op->outq);
- op->inq_rtpoll_item_write = pa_rtpoll_item_new_asyncmsgq_write(
- u->rtpoll,
- PA_RTPOLL_EARLY,
- op->inq);
-
- update_max_request(u);
- return 0;
- }
-
- case SINK_MESSAGE_REMOVE_OUTPUT: {
- struct output *op = data;
-
- PA_LLIST_REMOVE(struct output, u->thread_info.active_outputs, op);
-
- pa_assert(op->outq_rtpoll_item_read && op->inq_rtpoll_item_write);
-
- pa_rtpoll_item_free(op->outq_rtpoll_item_read);
- op->outq_rtpoll_item_read = NULL;
-
- pa_rtpoll_item_free(op->inq_rtpoll_item_write);
- op->inq_rtpoll_item_write = NULL;
-
- update_max_request(u);
- return 0;
- }
-
- case SINK_MESSAGE_NEED:
- render_memblock(u, (struct output*) data, (size_t) offset);
- return 0;
-
- case SINK_MESSAGE_UPDATE_LATENCY: {
- pa_usec_t x, y, latency = (pa_usec_t) offset;
-
- x = pa_rtclock_usec();
- y = pa_bytes_to_usec(u->thread_info.counter, &u->sink->sample_spec);
-
- if (y > latency)
- y -= latency;
- else
- y = 0;
-
- pa_smoother_put(u->thread_info.smoother, x, y);
- return 0;
- }
-
- case SINK_MESSAGE_UPDATE_MAX_REQUEST:
-
- update_max_request(u);
- break;
- }
-
- return pa_sink_process_msg(o, code, data, offset, chunk);
-}
-
-static void update_description(struct userdata *u) {
- pa_bool_t first = TRUE;
- char *t;
- struct output *o;
- uint32_t idx;
-
- pa_assert(u);
-
- if (pa_idxset_isempty(u->outputs)) {
- pa_sink_set_description(u->sink, "Simultaneous output");
- return;
- }
-
- t = pa_xstrdup("Simultaneous output to");
-
- for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx)) {
- char *e;
-
- if (first) {
- e = pa_sprintf_malloc("%s %s", t, pa_strnull(pa_proplist_gets(o->sink->proplist, PA_PROP_DEVICE_DESCRIPTION)));
- first = FALSE;
- } else
- e = pa_sprintf_malloc("%s, %s", t, pa_strnull(pa_proplist_gets(o->sink->proplist, PA_PROP_DEVICE_DESCRIPTION)));
-
- pa_xfree(t);
- t = e;
- }
-
- pa_sink_set_description(u->sink, t);
- pa_xfree(t);
-}
-
-static int output_create_sink_input(struct output *o) {
- pa_sink_input_new_data data;
-
- pa_assert(o);
-
- if (o->sink_input)
- return 0;
-
- pa_sink_input_new_data_init(&data);
- data.sink = o->sink;
- data.driver = __FILE__;
- pa_proplist_setf(data.proplist, PA_PROP_MEDIA_NAME, "Simultaneous output on %s", pa_strnull(pa_proplist_gets(o->sink->proplist, PA_PROP_DEVICE_DESCRIPTION)));
- pa_proplist_sets(data.proplist, PA_PROP_MEDIA_ROLE, "filter");
- pa_sink_input_new_data_set_sample_spec(&data, &o->userdata->sink->sample_spec);
- pa_sink_input_new_data_set_channel_map(&data, &o->userdata->sink->channel_map);
- data.module = o->userdata->module;
- data.resample_method = o->userdata->resample_method;
-
- o->sink_input = pa_sink_input_new(o->userdata->core, &data, PA_SINK_INPUT_VARIABLE_RATE|PA_SINK_INPUT_DONT_MOVE);
-
- pa_sink_input_new_data_done(&data);
-
- if (!o->sink_input)
- return -1;
-
- o->sink_input->parent.process_msg = sink_input_process_msg;
- o->sink_input->pop = sink_input_pop_cb;
- o->sink_input->process_rewind = sink_input_process_rewind_cb;
- o->sink_input->state_change = sink_input_state_change_cb;
- o->sink_input->update_max_rewind = sink_input_update_max_rewind_cb;
- o->sink_input->update_max_request = sink_input_update_max_request_cb;
- o->sink_input->attach = sink_input_attach_cb;
- o->sink_input->detach = sink_input_detach_cb;
- o->sink_input->kill = sink_input_kill_cb;
- o->sink_input->userdata = o;
-
- pa_sink_input_set_requested_latency(o->sink_input, REQUEST_LATENCY_USEC);
-
- return 0;
-}
-
-static struct output *output_new(struct userdata *u, pa_sink *sink) {
- struct output *o;
- pa_sink_state_t state;
-
- pa_assert(u);
- pa_assert(sink);
- pa_assert(u->sink);
-
- o = pa_xnew(struct output, 1);
- o->userdata = u;
- o->inq = pa_asyncmsgq_new(0);
- o->outq = pa_asyncmsgq_new(0);
- o->inq_rtpoll_item_write = o->inq_rtpoll_item_read = NULL;
- o->outq_rtpoll_item_write = o->outq_rtpoll_item_read = NULL;
- o->sink = sink;
- o->sink_input = NULL;
- o->memblockq = pa_memblockq_new(
- 0,
- MEMBLOCKQ_MAXLENGTH,
- MEMBLOCKQ_MAXLENGTH,
- pa_frame_size(&u->sink->sample_spec),
- 1,
- 0,
- 0,
- NULL);
- pa_atomic_store(&o->max_request, 0);
- PA_LLIST_INIT(struct output, o);
-
- pa_assert_se(pa_idxset_put(u->outputs, o, NULL) == 0);
-
- state = pa_sink_get_state(u->sink);
-
- if (state != PA_SINK_INIT)
- pa_asyncmsgq_send(u->sink->asyncmsgq, PA_MSGOBJECT(u->sink), SINK_MESSAGE_ADD_OUTPUT, o, 0, NULL);
- else {
- /* If the sink is not yet started, we need to do the activation ourselves */
- PA_LLIST_PREPEND(struct output, u->thread_info.active_outputs, o);
-
- o->outq_rtpoll_item_read = pa_rtpoll_item_new_asyncmsgq_read(
- u->rtpoll,
- PA_RTPOLL_EARLY-1, /* This item is very important */
- o->outq);
- o->inq_rtpoll_item_write = pa_rtpoll_item_new_asyncmsgq_write(
- u->rtpoll,
- PA_RTPOLL_EARLY,
- o->inq);
- }
-
- if (PA_SINK_IS_OPENED(state) || state == PA_SINK_INIT) {
- pa_sink_suspend(sink, FALSE);
-
- if (PA_SINK_IS_OPENED(pa_sink_get_state(sink)))
- if (output_create_sink_input(o) < 0)
- goto fail;
- }
-
- update_description(u);
-
- return o;
-
-fail:
-
- if (o) {
- pa_idxset_remove_by_data(u->outputs, o, NULL);
-
- if (o->sink_input) {
- pa_sink_input_unlink(o->sink_input);
- pa_sink_input_unref(o->sink_input);
- }
-
- if (o->memblockq)
- pa_memblockq_free(o->memblockq);
-
- if (o->inq)
- pa_asyncmsgq_unref(o->inq);
-
- if (o->outq)
- pa_asyncmsgq_unref(o->outq);
-
- pa_xfree(o);
- }
-
- return NULL;
-}
-
-static pa_bool_t is_suitable_sink(struct userdata *u, pa_sink *s) {
- const char *t;
-
- pa_sink_assert_ref(s);
-
- if (!(s->flags & PA_SINK_HARDWARE))
- return FALSE;
-
- if (s == u->sink)
- return FALSE;
-
- if ((t = pa_proplist_gets(s->proplist, PA_PROP_DEVICE_CLASS)))
- if (strcmp(t, "sound"))
- return FALSE;
-
- return TRUE;
-}
-
-static pa_hook_result_t sink_put_hook_cb(pa_core *c, pa_sink *s, struct userdata* u) {
- struct output *o;
-
- pa_core_assert_ref(c);
- pa_sink_assert_ref(s);
- pa_assert(u);
- pa_assert(u->automatic);
-
- if (!is_suitable_sink(u, s))
- return PA_HOOK_OK;
-
- pa_log_info("Configuring new sink: %s", s->name);
-
- if (!(o = output_new(u, s))) {
- pa_log("Failed to create sink input on sink '%s'.", s->name);
- return PA_HOOK_OK;
- }
-
- if (o->sink_input)
- pa_sink_input_put(o->sink_input);
-
- return PA_HOOK_OK;
-}
-
-static struct output* find_output(struct userdata *u, pa_sink *s) {
- struct output *o;
- uint32_t idx;
-
- pa_assert(u);
- pa_assert(s);
-
- if (u->sink == s)
- return NULL;
-
- for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx))
- if (o->sink == s)
- return o;
-
- return NULL;
-}
-
-static pa_hook_result_t sink_unlink_hook_cb(pa_core *c, pa_sink *s, struct userdata* u) {
- struct output *o;
-
- pa_assert(c);
- pa_sink_assert_ref(s);
- pa_assert(u);
-
- if (!(o = find_output(u, s)))
- return PA_HOOK_OK;
-
- pa_log_info("Unconfiguring sink: %s", s->name);
-
- output_free(o);
-
- return PA_HOOK_OK;
-}
-
-static pa_hook_result_t sink_state_changed_hook_cb(pa_core *c, pa_sink *s, struct userdata* u) {
- struct output *o;
- pa_sink_state_t state;
-
- if (!(o = find_output(u, s)))
- return PA_HOOK_OK;
-
- state = pa_sink_get_state(s);
-
- if (PA_SINK_IS_OPENED(state) && PA_SINK_IS_OPENED(pa_sink_get_state(u->sink)) && !o->sink_input)
- enable_output(o);
-
- if (state == PA_SINK_SUSPENDED && o->sink_input)
- disable_output(o);
-
- return PA_HOOK_OK;
-}
-