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pulseaudio/src/modules/module-combine.c
Lennart Poettering 00797b8b6e core: add a suspend cause flags field
2009-06-05 19:05:07 +02:00

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/***
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, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <errno.h>
#include <pulse/timeval.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-util.h>
#include <pulsecore/modargs.h>
#include <pulsecore/namereg.h>
#include <pulsecore/mutex.h>
#include <pulsecore/thread.h>
#include <pulsecore/thread-mq.h>
#include <pulsecore/rtpoll.h>
#include <pulsecore/rtclock.h>
#include <pulsecore/core-error.h>
#include <pulsecore/time-smoother.h>
#include "module-combine-symdef.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=<seconds> "
"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 10
#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;
pa_asyncmsgq *inq, /* Message queue from the sink thread to this sink input */
*outq; /* Message queue from this sink input to the sink thread */
pa_rtpoll_item *inq_rtpoll_item_read, *inq_rtpoll_item_write;
pa_rtpoll_item *outq_rtpoll_item_read, *outq_rtpoll_item_write;
pa_memblockq *memblockq;
pa_usec_t total_latency;
pa_atomic_t max_request;
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;
uint32_t adjust_time;
pa_bool_t automatic;
pa_hook_slot *sink_put_slot, *sink_unlink_slot, *sink_state_changed_slot;
pa_resample_method_t resample_method;
struct timeval adjust_timestamp;
pa_usec_t block_usec;
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;
pa_bool_t 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
};
enum {
SINK_INPUT_MESSAGE_POST = PA_SINK_INPUT_MESSAGE_MAX,
};
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_se(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, 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, PA_SUSPEND_IDLE);
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:
case PA_SINK_INVALID_STATE:
;
}
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_within_thread(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(), TRUE);
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;
pa_sink_input_new(&o->sink_input, 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, BLOCK_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, PA_SUSPEND_IDLE);
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;
}
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;
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_xnew(struct userdata, 1);
u->core = m->core;
u->module = m;
u->sink = NULL;
u->time_event = NULL;
u->adjust_time = DEFAULT_ADJUST_TIME;
u->rtpoll = pa_rtpoll_new();
pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll);
u->thread = NULL;
u->resample_method = resample_method;
u->outputs = pa_idxset_new(NULL, NULL);
memset(&u->adjust_timestamp, 0, sizeof(u->adjust_timestamp));
u->sink_put_slot = u->sink_unlink_slot = u->sink_state_changed_slot = NULL;
PA_LLIST_HEAD_INIT(struct output, u->thread_info.active_outputs);
pa_atomic_store(&u->thread_info.running, FALSE);
u->thread_info.in_null_mode = FALSE;
u->thread_info.counter = 0;
u->thread_info.smoother = pa_smoother_new(
PA_USEC_PER_SEC,
PA_USEC_PER_SEC*2,
TRUE,
TRUE,
10,
0,
FALSE);
if (pa_modargs_get_value_u32(ma, "adjust_time", &u->adjust_time) < 0) {
pa_log("Failed to parse adjust_time value");
goto fail;
}
slaves = pa_modargs_get_value(ma, "slaves", NULL);
u->automatic = !slaves;
ss = m->core->default_sample_spec;
map = m->core->default_channel_map;
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_DESCRIPTION, "Simultaneous Output");
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;
}
u->sink = pa_sink_new(m->core, &data, PA_SINK_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 = sink_set_state;
u->sink->userdata = u;
pa_sink_set_rtpoll(u->sink, u->rtpoll);
pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq);
u->block_usec = BLOCK_USEC;
pa_sink_set_max_request(u->sink, pa_usec_to_bytes(u->block_usec, &u->sink->sample_spec));
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 */
for (s = pa_idxset_first(m->core->sinks, &idx); s; s = pa_idxset_next(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(thread_func, u))) {
pa_log("Failed to create thread.");
goto fail;
}
/* Activate the sink and the sink inputs */
pa_sink_put(u->sink);
for (o = pa_idxset_first(u->outputs, &idx); o; o = pa_idxset_next(u->outputs, &idx))
if (o->sink_input)
pa_sink_input_put(o->sink_input);
if (u->adjust_time > 0) {
struct timeval tv;
pa_gettimeofday(&tv);
tv.tv_sec += (time_t) u->adjust_time;
u->time_event = m->core->mainloop->time_new(m->core->mainloop, &tv, time_callback, u);
}
pa_modargs_free(ma);
return 0;
fail:
if (ma)
pa_modargs_free(ma);
pa__done(m);
return -1;
}
static void output_free(struct output *o) {
pa_assert(o);
disable_output(o);
pa_assert_se(pa_idxset_remove_by_data(o->userdata->outputs, o, NULL));
update_description(o->userdata);
if (o->inq_rtpoll_item_read)
pa_rtpoll_item_free(o->inq_rtpoll_item_read);
if (o->inq_rtpoll_item_write)
pa_rtpoll_item_free(o->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->inq)
pa_asyncmsgq_unref(o->inq);
if (o->outq)
pa_asyncmsgq_unref(o->outq);
if (o->memblockq)
pa_memblockq_free(o->memblockq);
pa_xfree(o);
}
void pa__done(pa_module*m) {
struct userdata *u;
struct output *o;
pa_assert(m);
if (!(u = m->userdata))
return;
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) {
while ((o = pa_idxset_first(u->outputs, NULL)))
output_free(o);
pa_idxset_free(u->outputs, NULL, NULL);
}
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);
}
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