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Diffstat (limited to 'src/modules/module-combine-sink.c')
| -rw-r--r-- | src/modules/module-combine-sink.c | 1581 |
1 files changed, 1581 insertions, 0 deletions
diff --git a/src/modules/module-combine-sink.c b/src/modules/module-combine-sink.c new file mode 100644 index 0000000..685e240 --- /dev/null +++ b/src/modules/module-combine-sink.c @@ -0,0 +1,1581 @@ +/*** + This file is part of PulseAudio. + + Copyright 2004-2008 Lennart Poettering + + PulseAudio is free software; you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as published + by the Free Software Foundation; either version 2.1 of the License, + or (at your option) any later version. + + PulseAudio is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with PulseAudio; if not, see <http://www.gnu.org/licenses/>. +***/ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <stdio.h> +#include <errno.h> + +#include <pulse/rtclock.h> +#include <pulse/timeval.h> +#include <pulse/util.h> +#include <pulse/xmalloc.h> + +#include <pulsecore/macro.h> +#include <pulsecore/module.h> +#include <pulsecore/llist.h> +#include <pulsecore/sink.h> +#include <pulsecore/sink-input.h> +#include <pulsecore/memblockq.h> +#include <pulsecore/log.h> +#include <pulsecore/core-rtclock.h> +#include <pulsecore/core-util.h> +#include <pulsecore/modargs.h> +#include <pulsecore/namereg.h> +#include <pulsecore/thread.h> +#include <pulsecore/thread-mq.h> +#include <pulsecore/rtpoll.h> +#include <pulsecore/time-smoother.h> +#include <pulsecore/strlist.h> + +PA_MODULE_AUTHOR("Lennart Poettering"); +PA_MODULE_DESCRIPTION("Combine multiple sinks to one"); +PA_MODULE_VERSION(PACKAGE_VERSION); +PA_MODULE_LOAD_ONCE(false); +PA_MODULE_USAGE( + "sink_name=<name for the sink> " + "sink_properties=<properties for the sink> " + "slaves=<slave sinks> " + "adjust_time=<how often to readjust rates in s> " + "resample_method=<method> " + "format=<sample format> " + "rate=<sample rate> " + "channels=<number of channels> " + "channel_map=<channel map>"); + +#define DEFAULT_SINK_NAME "combined" + +#define MEMBLOCKQ_MAXLENGTH (1024*1024*16) + +#define DEFAULT_ADJUST_TIME_USEC (10*PA_USEC_PER_SEC) + +#define BLOCK_USEC (PA_USEC_PER_MSEC * 200) + +static const char* const valid_modargs[] = { + "sink_name", + "sink_properties", + "slaves", + "adjust_time", + "resample_method", + "format", + "rate", + "channels", + "channel_map", + NULL +}; + +struct output { + struct userdata *userdata; + + pa_sink *sink; + pa_sink_input *sink_input; + bool ignore_state_change; + + /* This message queue is only for POST messages, i.e. the messages that + * carry audio data from the sink thread to the output thread. The POST + * messages need to be handled in a separate queue, because the queue is + * processed not only in the output thread mainloop, but also inside the + * sink input pop() callback. Processing other messages (such as + * SET_REQUESTED_LATENCY) is not safe inside the pop() callback; at least + * one reason why it's not safe is that messages that generate rewind + * requests (such as SET_REQUESTED_LATENCY) cause crashes when processed + * in the pop() callback. */ + pa_asyncmsgq *audio_inq; + + /* This message queue is for all other messages than POST from the sink + * thread to the output thread (currently "all other messages" means just + * the SET_REQUESTED_LATENCY message). */ + pa_asyncmsgq *control_inq; + + /* Message queue from the output thread to the sink thread. */ + pa_asyncmsgq *outq; + + pa_rtpoll_item *audio_inq_rtpoll_item_read, *audio_inq_rtpoll_item_write; + pa_rtpoll_item *control_inq_rtpoll_item_read, *control_inq_rtpoll_item_write; + pa_rtpoll_item *outq_rtpoll_item_read, *outq_rtpoll_item_write; + + pa_memblockq *memblockq; + + /* For communication of the stream latencies to the main thread */ + pa_usec_t total_latency; + + /* For communication of the stream parameters to the sink thread */ + pa_atomic_t max_request; + pa_atomic_t max_latency; + pa_atomic_t min_latency; + + PA_LLIST_FIELDS(struct output); +}; + +struct userdata { + pa_core *core; + pa_module *module; + pa_sink *sink; + + pa_thread *thread; + pa_thread_mq thread_mq; + pa_rtpoll *rtpoll; + + pa_time_event *time_event; + pa_usec_t adjust_time; + + bool automatic; + bool auto_desc; + + pa_strlist *unlinked_slaves; + + pa_hook_slot *sink_put_slot, *sink_unlink_slot, *sink_state_changed_slot; + + pa_resample_method_t resample_method; + + pa_usec_t block_usec; + pa_usec_t default_min_latency; + pa_usec_t default_max_latency; + + pa_idxset* outputs; /* managed in main context */ + + struct { + PA_LLIST_HEAD(struct output, active_outputs); /* managed in IO thread context */ + pa_atomic_t running; /* we cache that value here, so that every thread can query it cheaply */ + pa_usec_t timestamp; + bool in_null_mode; + pa_smoother *smoother; + uint64_t counter; + } thread_info; +}; + +enum { + SINK_MESSAGE_ADD_OUTPUT = PA_SINK_MESSAGE_MAX, + SINK_MESSAGE_REMOVE_OUTPUT, + SINK_MESSAGE_NEED, + SINK_MESSAGE_UPDATE_LATENCY, + SINK_MESSAGE_UPDATE_MAX_REQUEST, + SINK_MESSAGE_UPDATE_LATENCY_RANGE +}; + +enum { + SINK_INPUT_MESSAGE_POST = PA_SINK_INPUT_MESSAGE_MAX, + SINK_INPUT_MESSAGE_SET_REQUESTED_LATENCY +}; + +static void output_disable(struct output *o); +static void output_enable(struct output *o); +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(u->sink->state)) + return; + + PA_IDXSET_FOREACH(o, u->outputs, idx) { + pa_usec_t sink_latency; + + if (!o->sink_input || !PA_SINK_IS_OPENED(o->sink->state)) + 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++; + + pa_log_debug("[%s] total=%0.2fms sink=%0.2fms ", o->sink->name, (double) o->total_latency / PA_USEC_PER_MSEC, (double) sink_latency / PA_USEC_PER_MSEC); + + if (o->total_latency > 10*PA_USEC_PER_SEC) + pa_log_warn("[%s] Total latency of output is very high (%0.2fms), most likely the audio timing in one of your drivers is broken.", o->sink->name, (double) o->total_latency / PA_USEC_PER_MSEC); + } + + if (min_total_latency == (pa_usec_t) -1) + return; + + avg_total_latency /= n; + + target_latency = PA_MAX(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; + + PA_IDXSET_FOREACH(o, u->outputs, idx) { + uint32_t new_rate = base_rate; + uint32_t current_rate; + + if (!o->sink_input || !PA_SINK_IS_OPENED(o->sink->state)) + continue; + + current_rate = o->sink_input->sample_spec.rate; + + if (o->total_latency != target_latency) + new_rate += (uint32_t) (((double) o->total_latency - (double) target_latency) / (double) u->adjust_time * (double) new_rate); + + if (new_rate < (uint32_t) (base_rate*0.8) || new_rate > (uint32_t) (base_rate*1.25)) { + pa_log_warn("[%s] sample rates too different, not adjusting (%u vs. %u).", o->sink_input->sink->name, base_rate, new_rate); + new_rate = base_rate; + } else { + if (base_rate < new_rate + 20 && new_rate < base_rate + 20) + new_rate = base_rate; + /* Do the adjustment in small steps; 2‰ can be considered inaudible */ + if (new_rate < (uint32_t) (current_rate*0.998) || new_rate > (uint32_t) (current_rate*1.002)) { + pa_log_info("[%s] new rate of %u Hz not within 2‰ of %u Hz, forcing smaller adjustment", o->sink_input->sink->name, new_rate, current_rate); + new_rate = PA_CLAMP(new_rate, (uint32_t) (current_rate*0.998), (uint32_t) (current_rate*1.002)); + } + pa_log_info("[%s] new rate is %u Hz; ratio is %0.3f; latency is %0.2f msec.", o->sink_input->sink->name, new_rate, (double) new_rate / base_rate, (double) o->total_latency / PA_USEC_PER_MSEC); + } + pa_sink_input_set_rate(o->sink_input, new_rate); + } + + 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 *t, void *userdata) { + struct userdata *u = userdata; + + pa_assert(u); + pa_assert(a); + pa_assert(u->time_event == e); + + adjust_rates(u); + + if (u->sink->state == PA_SINK_SUSPENDED) { + u->core->mainloop->time_free(e); + u->time_event = NULL; + } else + pa_core_rttime_restart(u->core, e, pa_rtclock_now() + u->adjust_time); +} + +static void process_render_null(struct userdata *u, pa_usec_t now) { + size_t ate = 0; + + pa_assert(u); + pa_assert(u->sink->thread_info.state == PA_SINK_RUNNING); + + 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_thread_make_realtime(u->core->realtime_priority+1); + + pa_thread_mq_install(&u->thread_mq); + + u->thread_info.timestamp = pa_rtclock_now(); + u->thread_info.in_null_mode = false; + + for (;;) { + int ret; + + if (PA_UNLIKELY(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 (u->sink->thread_info.state == PA_SINK_RUNNING && !u->thread_info.active_outputs) { + pa_usec_t now; + + now = pa_rtclock_now(); + + 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)) < 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 combine sink 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->audio_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 */ + PA_LLIST_FOREACH(j, u->thread_info.active_outputs) { + if (j == o) + continue; + + pa_asyncmsgq_post(j->audio_inq, PA_MSGOBJECT(j->sink_input), SINK_INPUT_MESSAGE_POST, NULL, 0, &chunk, NULL); + } + + /* And place it directly into the requesting output's queue */ + 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->audio_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); + + /* pa_log("%s q size is %u + %u (%u/%u)", */ + /* i->sink->name, */ + /* pa_memblockq_get_nblocks(o->memblockq), */ + /* pa_memblockq_get_nblocks(i->thread_info.render_memblockq), */ + /* pa_memblockq_get_maxrewind(o->memblockq), */ + /* pa_memblockq_get_maxrewind(i->thread_info.render_memblockq)); */ + + 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_log_debug("Sink input update max request %lu", (unsigned long) nbytes); + pa_asyncmsgq_post(o->outq, PA_MSGOBJECT(o->userdata->sink), SINK_MESSAGE_UPDATE_MAX_REQUEST, NULL, 0, NULL, NULL); +} + +/* Called from thread context */ +static void sink_input_update_sink_latency_range_cb(pa_sink_input *i) { + struct output *o; + pa_usec_t min, max, fix; + + pa_assert(i); + + pa_sink_input_assert_ref(i); + pa_assert_se(o = i->userdata); + + fix = i->sink->thread_info.fixed_latency; + if (fix > 0) { + min = fix; + max = fix; + } else { + min = i->sink->thread_info.min_latency; + max = i->sink->thread_info.max_latency; + } + + if ((pa_atomic_load(&o->min_latency) == (int) min) && + (pa_atomic_load(&o->max_latency) == (int) max)) + return; + + pa_atomic_store(&o->min_latency, (int) min); + pa_atomic_store(&o->max_latency, (int) max); + pa_log_debug("Sink input update latency range %lu %lu", (unsigned long) min, (unsigned long) max); + pa_asyncmsgq_post(o->outq, PA_MSGOBJECT(o->userdata->sink), SINK_MESSAGE_UPDATE_LATENCY_RANGE, NULL, 0, NULL, NULL); +} + +/* Called from I/O thread context */ +static void sink_input_attach_cb(pa_sink_input *i) { + struct output *o; + pa_usec_t fix, min, max; + size_t nbytes; + + 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->audio_inq_rtpoll_item_read); + pa_assert(!o->control_inq_rtpoll_item_read); + pa_assert(!o->outq_rtpoll_item_write); + + o->audio_inq_rtpoll_item_read = pa_rtpoll_item_new_asyncmsgq_read( + i->sink->thread_info.rtpoll, + PA_RTPOLL_LATE, /* This one is not that important, since we check for data in _peek() anyway. */ + o->audio_inq); + + o->control_inq_rtpoll_item_read = pa_rtpoll_item_new_asyncmsgq_read( + i->sink->thread_info.rtpoll, + PA_RTPOLL_NORMAL, + o->control_inq); + + o->outq_rtpoll_item_write = pa_rtpoll_item_new_asyncmsgq_write( + i->sink->thread_info.rtpoll, + PA_RTPOLL_EARLY, + o->outq); + + pa_sink_input_request_rewind(i, 0, false, true, true); + + nbytes = pa_sink_input_get_max_request(i); + pa_atomic_store(&o->max_request, (int) nbytes); + pa_log_debug("attach max request %lu", (unsigned long) nbytes); + + fix = i->sink->thread_info.fixed_latency; + if (fix > 0) { + min = max = fix; + } else { + min = i->sink->thread_info.min_latency; + max = i->sink->thread_info.max_latency; + } + pa_atomic_store(&o->min_latency, (int) min); + pa_atomic_store(&o->max_latency, (int) max); + pa_log_debug("attach latency range %lu %lu", (unsigned long) min, (unsigned long) max); + + /* We register the output. That means that the sink will start to pass data to + * this output. */ + pa_asyncmsgq_send(o->userdata->sink->asyncmsgq, PA_MSGOBJECT(o->userdata->sink), SINK_MESSAGE_ADD_OUTPUT, o, 0, NULL); +} + +/* 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); + + /* We unregister the output. That means that the sink doesn't + * pass any further data to this output */ + pa_asyncmsgq_send(o->userdata->sink->asyncmsgq, PA_MSGOBJECT(o->userdata->sink), SINK_MESSAGE_REMOVE_OUTPUT, o, 0, NULL); + + if (o->audio_inq_rtpoll_item_read) { + pa_rtpoll_item_free(o->audio_inq_rtpoll_item_read); + o->audio_inq_rtpoll_item_read = NULL; + } + + if (o->control_inq_rtpoll_item_read) { + pa_rtpoll_item_free(o->control_inq_rtpoll_item_read); + o->control_inq_rtpoll_item_read = NULL; + } + + if (o->outq_rtpoll_item_write) { + 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_se(o = i->userdata); + + pa_module_unload_request(o->userdata->module, true); + pa_idxset_remove_by_data(o->userdata->outputs, o, NULL); + output_free(o); +} + +/* 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, true); + + return 0; + + case SINK_INPUT_MESSAGE_SET_REQUESTED_LATENCY: { + pa_usec_t latency = (pa_usec_t) offset; + + pa_sink_input_set_requested_latency_within_thread(o->sink_input, latency); + + return 0; + } + } + + return pa_sink_input_process_msg(obj, code, data, offset, chunk); +} + +/* 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 */ + PA_IDXSET_FOREACH(o, u->outputs, idx) + output_disable(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 */ + PA_IDXSET_FOREACH(o, u->outputs, idx) + output_enable(o); + + if (!u->time_event && u->adjust_time > 0) + u->time_event = pa_core_rttime_new(u->core, pa_rtclock_now() + u->adjust_time, time_callback, u); + + pa_log_info("Resumed successfully..."); +} + +/* Called from main context */ +static int sink_set_state_in_main_thread_cb(pa_sink *sink, pa_sink_state_t state, pa_suspend_cause_t suspend_cause) { + struct userdata *u; + + pa_sink_assert_ref(sink); + pa_assert_se(u = sink->userdata); + + /* It may be that only the suspend cause is changing, in which + * case there's nothing to do. */ + if (state == u->sink->state) + return 0; + + /* 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(u->sink->state)); + + suspend(u); + break; + + case PA_SINK_IDLE: + case PA_SINK_RUNNING: + + if (u->sink->state == PA_SINK_SUSPENDED) + unsuspend(u); + + break; + + case PA_SINK_UNLINKED: + case PA_SINK_INIT: + case PA_SINK_INVALID_STATE: + ; + } + + return 0; +} + +/* Called from the IO thread. */ +static int sink_set_state_in_io_thread_cb(pa_sink *s, pa_sink_state_t new_state, pa_suspend_cause_t new_suspend_cause) { + struct userdata *u; + bool running; + + pa_assert(s); + pa_assert_se(u = s->userdata); + + /* It may be that only the suspend cause is changing, in which case there's + * nothing to do. */ + if (new_state == s->thread_info.state) + return 0; + + running = new_state == PA_SINK_RUNNING; + pa_atomic_store(&u->thread_info.running, running); + + if (running) + pa_smoother_resume(u->thread_info.smoother, pa_rtclock_now(), true); + else + pa_smoother_pause(u->thread_info.smoother, pa_rtclock_now()); + + return 0; +} + +/* Called from IO context */ +static void update_max_request(struct userdata *u) { + size_t max_request = 0; + struct output *o; + + pa_assert(u); + pa_sink_assert_io_context(u->sink); + + /* Collects the max_request values of all streams and sets the + * largest one locally */ + + PA_LLIST_FOREACH(o, u->thread_info.active_outputs) { + 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_log_debug("Sink update max request %lu", (unsigned long) max_request); + pa_sink_set_max_request_within_thread(u->sink, max_request); +} + +/* Called from IO context */ +static void update_latency_range(struct userdata *u) { + pa_usec_t min_latency = 0, max_latency = (pa_usec_t) -1; + struct output *o; + + pa_assert(u); + pa_sink_assert_io_context(u->sink); + + /* Collects the latency_range values of all streams and sets + * the max of min and min of max locally */ + PA_LLIST_FOREACH(o, u->thread_info.active_outputs) { + pa_usec_t min = (size_t) pa_atomic_load(&o->min_latency); + pa_usec_t max = (size_t) pa_atomic_load(&o->max_latency); + + if (min > min_latency) + min_latency = min; + if (max_latency == (pa_usec_t) -1 || max < max_latency) + max_latency = max; + } + if (max_latency == (pa_usec_t) -1) { + /* No outputs, use default limits. */ + min_latency = u->default_min_latency; + max_latency = u->default_max_latency; + } + + /* As long as we don't support rewinding, we should limit the max latency + * to a conservative value. */ + if (max_latency > u->default_max_latency) + max_latency = u->default_max_latency; + + /* Never ever try to set lower max latency than min latency, it just + * doesn't make sense. */ + if (max_latency < min_latency) + max_latency = min_latency; + + pa_log_debug("Sink update latency range %" PRIu64 " %" PRIu64, min_latency, max_latency); + pa_sink_set_latency_range_within_thread(u->sink, min_latency, max_latency); +} + +/* Called from thread context of the io thread */ +static void output_add_within_thread(struct output *o) { + pa_assert(o); + pa_sink_assert_io_context(o->sink); + + PA_LLIST_PREPEND(struct output, o->userdata->thread_info.active_outputs, o); + + pa_assert(!o->outq_rtpoll_item_read); + pa_assert(!o->audio_inq_rtpoll_item_write); + pa_assert(!o->control_inq_rtpoll_item_write); + + o->outq_rtpoll_item_read = pa_rtpoll_item_new_asyncmsgq_read( + o->userdata->rtpoll, + PA_RTPOLL_EARLY-1, /* This item is very important */ + o->outq); + o->audio_inq_rtpoll_item_write = pa_rtpoll_item_new_asyncmsgq_write( + o->userdata->rtpoll, + PA_RTPOLL_EARLY, + o->audio_inq); + o->control_inq_rtpoll_item_write = pa_rtpoll_item_new_asyncmsgq_write( + o->userdata->rtpoll, + PA_RTPOLL_NORMAL, + o->control_inq); +} + +/* Called from thread context of the io thread */ +static void output_remove_within_thread(struct output *o) { + pa_assert(o); + pa_sink_assert_io_context(o->sink); + + PA_LLIST_REMOVE(struct output, o->userdata->thread_info.active_outputs, o); + + if (o->outq_rtpoll_item_read) { + pa_rtpoll_item_free(o->outq_rtpoll_item_read); + o->outq_rtpoll_item_read = NULL; + } + + if (o->audio_inq_rtpoll_item_write) { + pa_rtpoll_item_free(o->audio_inq_rtpoll_item_write); + o->audio_inq_rtpoll_item_write = NULL; + } + + if (o->control_inq_rtpoll_item_write) { + pa_rtpoll_item_free(o->control_inq_rtpoll_item_write); + o->control_inq_rtpoll_item_write = NULL; + } +} + +/* Called from sink I/O thread context */ +static void sink_update_requested_latency(pa_sink *s) { + struct userdata *u; + struct output *o; + + pa_sink_assert_ref(s); + pa_assert_se(u = s->userdata); + + u->block_usec = pa_sink_get_requested_latency_within_thread(s); + + if (u->block_usec == (pa_usec_t) -1) + u->block_usec = s->thread_info.max_latency; + + pa_log_debug("Sink update requested latency %0.2f", (double) u->block_usec / PA_USEC_PER_MSEC); + + /* Just hand this one over to all sink_inputs */ + PA_LLIST_FOREACH(o, u->thread_info.active_outputs) { + pa_asyncmsgq_post(o->control_inq, PA_MSGOBJECT(o->sink_input), SINK_INPUT_MESSAGE_SET_REQUESTED_LATENCY, NULL, + u->block_usec, NULL, NULL); + } +} + + +/* 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_GET_LATENCY: { + pa_usec_t x, y, c; + int64_t *delay = data; + + x = pa_rtclock_now(); + y = pa_smoother_get(u->thread_info.smoother, x); + + c = pa_bytes_to_usec(u->thread_info.counter, &u->sink->sample_spec); + + *delay = (int64_t)c - y; + + return 0; + } + + case SINK_MESSAGE_ADD_OUTPUT: + output_add_within_thread(data); + update_max_request(u); + update_latency_range(u); + return 0; + + case SINK_MESSAGE_REMOVE_OUTPUT: + output_remove_within_thread(data); + update_max_request(u); + update_latency_range(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_now(); + 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; + + case SINK_MESSAGE_UPDATE_LATENCY_RANGE: + update_latency_range(u); + break; + +} + + return pa_sink_process_msg(o, code, data, offset, chunk); +} + +static void update_description(struct userdata *u) { + bool first = true; + char *t; + struct output *o; + uint32_t idx; + + pa_assert(u); + + if (!u->auto_desc) + return; + + if (pa_idxset_isempty(u->outputs)) { + pa_sink_set_description(u->sink, "Simultaneous output"); + return; + } + + t = pa_xstrdup("Simultaneous output to"); + + PA_IDXSET_FOREACH(o, 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) { + struct userdata *u; + pa_sink_input_new_data data; + + pa_assert(o); + + if (o->sink_input) + return 0; + + u = o->userdata; + + pa_sink_input_new_data_init(&data); + pa_sink_input_new_data_set_sink(&data, o->sink, false, true); + 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, &u->sink->sample_spec); + pa_sink_input_new_data_set_channel_map(&data, &u->sink->channel_map); + data.module = u->module; + data.resample_method = u->resample_method; + data.flags = PA_SINK_INPUT_VARIABLE_RATE|PA_SINK_INPUT_DONT_MOVE|PA_SINK_INPUT_NO_CREATE_ON_SUSPEND; + + pa_sink_input_new(&o->sink_input, u->core, &data); + + 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->update_max_rewind = sink_input_update_max_rewind_cb; + o->sink_input->update_max_request = sink_input_update_max_request_cb; + o->sink_input->update_sink_latency_range = sink_input_update_sink_latency_range_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, pa_sink_get_requested_latency(u->sink)); + + return 0; +} + +/* Called from main context */ +static struct output *output_new(struct userdata *u, pa_sink *sink) { + struct output *o; + + pa_assert(u); + pa_assert(sink); + pa_assert(u->sink); + + o = pa_xnew0(struct output, 1); + o->userdata = u; + + o->audio_inq = pa_asyncmsgq_new(0); + if (!o->audio_inq) { + pa_log("pa_asyncmsgq_new() failed."); + goto fail; + } + + o->control_inq = pa_asyncmsgq_new(0); + if (!o->control_inq) { + pa_log("pa_asyncmsgq_new() failed."); + goto fail; + } + + o->outq = pa_asyncmsgq_new(0); + if (!o->outq) { + pa_log("pa_asyncmsgq_new() failed."); + goto fail; + } + + o->sink = sink; + o->memblockq = pa_memblockq_new( + "module-combine-sink output memblockq", + 0, + MEMBLOCKQ_MAXLENGTH, + MEMBLOCKQ_MAXLENGTH, + &u->sink->sample_spec, + 1, + 0, + 0, + &u->sink->silence); + + pa_assert_se(pa_idxset_put(u->outputs, o, NULL) == 0); + update_description(u); + + return o; + +fail: + output_free(o); + + return NULL; +} + +/* Called from main context */ +static void output_free(struct output *o) { + pa_assert(o); + + output_disable(o); + update_description(o->userdata); + + if (o->audio_inq_rtpoll_item_read) + pa_rtpoll_item_free(o->audio_inq_rtpoll_item_read); + if (o->audio_inq_rtpoll_item_write) + pa_rtpoll_item_free(o->audio_inq_rtpoll_item_write); + + if (o->control_inq_rtpoll_item_read) + pa_rtpoll_item_free(o->control_inq_rtpoll_item_read); + if (o->control_inq_rtpoll_item_write) + pa_rtpoll_item_free(o->control_inq_rtpoll_item_write); + + if (o->outq_rtpoll_item_read) + pa_rtpoll_item_free(o->outq_rtpoll_item_read); + if (o->outq_rtpoll_item_write) + pa_rtpoll_item_free(o->outq_rtpoll_item_write); + + if (o->audio_inq) + pa_asyncmsgq_unref(o->audio_inq); + + if (o->control_inq) + pa_asyncmsgq_unref(o->control_inq); + + if (o->outq) + pa_asyncmsgq_unref(o->outq); + + if (o->memblockq) + pa_memblockq_free(o->memblockq); + + pa_xfree(o); +} + +/* Called from main context */ +static void output_enable(struct output *o) { + pa_assert(o); + + if (o->sink_input) + return; + + /* This might cause the sink to be resumed. The state change hook + * of the sink might hence be called from here, which might then + * cause us to be called in a loop. Make sure that state changes + * for this output don't cause this loop by setting a flag here */ + o->ignore_state_change = true; + + if (output_create_sink_input(o) >= 0) { + + if (o->sink->state != PA_SINK_INIT) { + /* Enable the sink input. That means that the sink + * is now asked for new data. */ + pa_sink_input_put(o->sink_input); + } + } + + o->ignore_state_change = false; +} + +/* Called from main context */ +static void output_disable(struct output *o) { + pa_assert(o); + + if (!o->sink_input) + return; + + /* We disable the sink input. That means that the sink is + * not asked for new data anymore */ + pa_sink_input_unlink(o->sink_input); + + /* Now deallocate the stream */ + pa_sink_input_unref(o->sink_input); + o->sink_input = NULL; + + /* Finally, drop all queued data */ + pa_memblockq_flush_write(o->memblockq, true); + pa_asyncmsgq_flush(o->audio_inq, false); + pa_asyncmsgq_flush(o->control_inq, false); + pa_asyncmsgq_flush(o->outq, false); +} + +/* Called from main context */ +static void output_verify(struct output *o) { + pa_assert(o); + + if (PA_SINK_IS_OPENED(o->userdata->sink->state)) + output_enable(o); + else + output_disable(o); +} + +/* Called from main context */ +static bool is_suitable_sink(struct userdata *u, pa_sink *s) { + const char *t; + + pa_sink_assert_ref(s); + + if (s == u->sink) + return false; + + if (!(s->flags & PA_SINK_HARDWARE)) + return false; + + if (!(s->flags & PA_SINK_LATENCY)) + return false; + + if ((t = pa_proplist_gets(s->proplist, PA_PROP_DEVICE_CLASS))) + if (!pa_streq(t, "sound")) + return false; + + return true; +} + +/* Called from main context */ +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); + + if (u->automatic) { + if (!is_suitable_sink(u, s)) + return PA_HOOK_OK; + } else { + /* Check if the sink is a previously unlinked slave (non-automatic mode) */ + pa_strlist *l = u->unlinked_slaves; + + while (l && !pa_streq(pa_strlist_data(l), s->name)) + l = pa_strlist_next(l); + + if (!l) + return PA_HOOK_OK; + + u->unlinked_slaves = pa_strlist_remove(u->unlinked_slaves, s->name); + } + + 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; + } + + output_verify(o); + + return PA_HOOK_OK; +} + +/* Called from main context */ +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; + + PA_IDXSET_FOREACH(o, u->outputs, idx) + if (o->sink == s) + return o; + + return NULL; +} + +/* Called from main context */ +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); + + if (!u->automatic) + u->unlinked_slaves = pa_strlist_prepend(u->unlinked_slaves, s->name); + + pa_idxset_remove_by_data(u->outputs, o, NULL); + output_free(o); + + return PA_HOOK_OK; +} + +/* Called from main context */ +static pa_hook_result_t sink_state_changed_hook_cb(pa_core *c, pa_sink *s, struct userdata* u) { + struct output *o; + + if (!(o = find_output(u, s))) + return PA_HOOK_OK; + + /* This state change might be triggered because we are creating a + * stream here, in that case we don't want to create it a second + * time here and enter a loop */ + if (o->ignore_state_change) + return PA_HOOK_OK; + + output_verify(o); + + return PA_HOOK_OK; +} + +int pa__init(pa_module*m) { + struct userdata *u; + pa_modargs *ma = NULL; + const char *slaves, *rm; + int resample_method = PA_RESAMPLER_TRIVIAL; + pa_sample_spec ss; + pa_channel_map map; + struct output *o; + uint32_t idx; + pa_sink_new_data data; + uint32_t adjust_time_sec; + size_t nbytes; + + pa_assert(m); + + if (!(ma = pa_modargs_new(m->argument, valid_modargs))) { + pa_log("failed to parse module arguments"); + goto fail; + } + + if ((rm = pa_modargs_get_value(ma, "resample_method", NULL))) { + if ((resample_method = pa_parse_resample_method(rm)) < 0) { + pa_log("invalid resample method '%s'", rm); + goto fail; + } + } + + m->userdata = u = pa_xnew0(struct userdata, 1); + u->core = m->core; + u->module = m; + u->rtpoll = pa_rtpoll_new(); + + if (pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll) < 0) { + pa_log("pa_thread_mq_init() failed."); + goto fail; + } + + u->resample_method = resample_method; + u->outputs = pa_idxset_new(NULL, NULL); + u->thread_info.smoother = pa_smoother_new( + PA_USEC_PER_SEC, + PA_USEC_PER_SEC*2, + true, + true, + 10, + pa_rtclock_now(), + true); + + adjust_time_sec = DEFAULT_ADJUST_TIME_USEC / PA_USEC_PER_SEC; + if (pa_modargs_get_value_u32(ma, "adjust_time", &adjust_time_sec) < 0) { + pa_log("Failed to parse adjust_time value"); + goto fail; + } + + if (adjust_time_sec != DEFAULT_ADJUST_TIME_USEC / PA_USEC_PER_SEC) + u->adjust_time = adjust_time_sec * PA_USEC_PER_SEC; + else + u->adjust_time = DEFAULT_ADJUST_TIME_USEC; + + slaves = pa_modargs_get_value(ma, "slaves", NULL); + u->automatic = !slaves; + + ss = m->core->default_sample_spec; + map = m->core->default_channel_map; + + /* Check the specified slave sinks for sample_spec and channel_map to use for the combined sink */ + if (!u->automatic) { + const char*split_state = NULL; + char *n = NULL; + pa_sample_spec slaves_spec; + pa_channel_map slaves_map; + bool is_first_slave = true; + + pa_sample_spec_init(&slaves_spec); + + while ((n = pa_split(slaves, ",", &split_state))) { + pa_sink *slave_sink; + + if (!(slave_sink = pa_namereg_get(m->core, n, PA_NAMEREG_SINK))) { + pa_log("Invalid slave sink '%s'", n); + pa_xfree(n); + goto fail; + } + + pa_xfree(n); + + if (is_first_slave) { + slaves_spec = slave_sink->sample_spec; + slaves_map = slave_sink->channel_map; + is_first_slave = false; + } else { + if (slaves_spec.format != slave_sink->sample_spec.format) + slaves_spec.format = PA_SAMPLE_INVALID; + + if (slaves_spec.rate < slave_sink->sample_spec.rate) + slaves_spec.rate = slave_sink->sample_spec.rate; + + if (!pa_channel_map_equal(&slaves_map, &slave_sink->channel_map)) + slaves_spec.channels = 0; + } + } + + if (!is_first_slave) { + if (slaves_spec.format != PA_SAMPLE_INVALID) + ss.format = slaves_spec.format; + + ss.rate = slaves_spec.rate; + + if (slaves_spec.channels > 0) { + map = slaves_map; + ss.channels = slaves_map.channels; + } + } + } + + if ((pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_DEFAULT) < 0)) { + pa_log("Invalid sample specification."); + goto fail; + } + + pa_sink_new_data_init(&data); + data.namereg_fail = false; + data.driver = __FILE__; + data.module = m; + pa_sink_new_data_set_name(&data, pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME)); + pa_sink_new_data_set_sample_spec(&data, &ss); + pa_sink_new_data_set_channel_map(&data, &map); + pa_proplist_sets(data.proplist, PA_PROP_DEVICE_CLASS, "filter"); + + if (slaves) + pa_proplist_sets(data.proplist, "combine.slaves", slaves); + + if (pa_modargs_get_proplist(ma, "sink_properties", data.proplist, PA_UPDATE_REPLACE) < 0) { + pa_log("Invalid properties"); + pa_sink_new_data_done(&data); + goto fail; + } + + /* Check proplist for a description & fill in a default value if not */ + u->auto_desc = false; + if (NULL == pa_proplist_gets(data.proplist, PA_PROP_DEVICE_DESCRIPTION)) { + u->auto_desc = true; + pa_proplist_sets(data.proplist, PA_PROP_DEVICE_DESCRIPTION, "Simultaneous Output"); + } + + u->sink = pa_sink_new(m->core, &data, PA_SINK_LATENCY|PA_SINK_DYNAMIC_LATENCY); + pa_sink_new_data_done(&data); + + if (!u->sink) { + pa_log("Failed to create sink"); + goto fail; + } + + u->sink->parent.process_msg = sink_process_msg; + u->sink->set_state_in_main_thread = sink_set_state_in_main_thread_cb; + u->sink->set_state_in_io_thread = sink_set_state_in_io_thread_cb; + u->sink->update_requested_latency = sink_update_requested_latency; + u->sink->userdata = u; + + pa_sink_set_rtpoll(u->sink, u->rtpoll); + pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq); + + nbytes = pa_usec_to_bytes(BLOCK_USEC, &u->sink->sample_spec); + pa_sink_set_max_request(u->sink, nbytes); + pa_sink_set_latency_range(u->sink, 0, BLOCK_USEC); + /* pulse clamps the range, get the real values */ + u->default_min_latency = u->sink->thread_info.min_latency; + u->default_max_latency = u->sink->thread_info.max_latency; + u->block_usec = u->sink->thread_info.max_latency; + + + if (!u->automatic) { + const char*split_state; + char *n = NULL; + pa_assert(slaves); + + /* The slaves have been specified manually */ + + split_state = NULL; + while ((n = pa_split(slaves, ",", &split_state))) { + pa_sink *slave_sink; + + if (!(slave_sink = pa_namereg_get(m->core, n, PA_NAMEREG_SINK)) || slave_sink == u->sink) { + pa_log("Invalid slave sink '%s'", n); + pa_xfree(n); + goto fail; + } + + pa_xfree(n); + + if (!output_new(u, slave_sink)) { + pa_log("Failed to create slave sink input on sink '%s'.", slave_sink->name); + goto fail; + } + } + + if (pa_idxset_size(u->outputs) <= 1) + pa_log_warn("No slave sinks specified."); + + u->sink_put_slot = NULL; + + } else { + pa_sink *s; + + /* We're in automatic mode, we add every sink that matches our needs */ + + PA_IDXSET_FOREACH(s, m->core->sinks, idx) { + + if (!is_suitable_sink(u, s)) + continue; + + if (!output_new(u, s)) { + pa_log("Failed to create sink input on sink '%s'.", s->name); + goto fail; + } + } + } + + u->sink_put_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_PUT], PA_HOOK_LATE, (pa_hook_cb_t) sink_put_hook_cb, u); + u->sink_unlink_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_UNLINK], PA_HOOK_EARLY, (pa_hook_cb_t) sink_unlink_hook_cb, u); + u->sink_state_changed_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_STATE_CHANGED], PA_HOOK_NORMAL, (pa_hook_cb_t) sink_state_changed_hook_cb, u); + + if (!(u->thread = pa_thread_new("combine", thread_func, u))) { + pa_log("Failed to create thread."); + goto fail; + } + + /* Activate the sink and the sink inputs */ + pa_sink_put(u->sink); + + PA_IDXSET_FOREACH(o, u->outputs, idx) + output_verify(o); + + if (u->adjust_time > 0) + u->time_event = pa_core_rttime_new(m->core, pa_rtclock_now() + u->adjust_time, time_callback, u); + + pa_modargs_free(ma); + + return 0; + +fail: + + if (ma) + pa_modargs_free(ma); + + pa__done(m); + + return -1; +} + +void pa__done(pa_module*m) { + struct userdata *u; + + pa_assert(m); + + if (!(u = m->userdata)) + return; + + pa_strlist_free(u->unlinked_slaves); + + if (u->sink_put_slot) + pa_hook_slot_free(u->sink_put_slot); + + if (u->sink_unlink_slot) + pa_hook_slot_free(u->sink_unlink_slot); + + if (u->sink_state_changed_slot) + pa_hook_slot_free(u->sink_state_changed_slot); + + if (u->outputs) + pa_idxset_free(u->outputs, (pa_free_cb_t) output_free); + + if (u->sink) + pa_sink_unlink(u->sink); + + if (u->thread) { + pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL); + pa_thread_free(u->thread); + } + + pa_thread_mq_done(&u->thread_mq); + + if (u->sink) + pa_sink_unref(u->sink); + + if (u->rtpoll) + pa_rtpoll_free(u->rtpoll); + + if (u->time_event) + u->core->mainloop->time_free(u->time_event); + + if (u->thread_info.smoother) + pa_smoother_free(u->thread_info.smoother); + + pa_xfree(u); +} |