int main(int argc, char *argv[]) {
pa_asyncmsgq *q;
pa_thread *t;
pa_assert_se(q = pa_asyncmsgq_new(0));
pa_assert_se(t = pa_thread_new("test", the_thread, q));
pa_log_info("Operation A post");
pa_asyncmsgq_post(q, NULL, OPERATION_A, NULL, 0, NULL, NULL);
pa_thread_yield();
pa_log_info("Operation B post");
pa_asyncmsgq_post(q, NULL, OPERATION_B, NULL, 0, NULL, NULL);
pa_thread_yield();
pa_log_info("Operation C send");
pa_asyncmsgq_send(q, NULL, OPERATION_C, NULL, 0, NULL);
pa_thread_yield();
pa_log_info("Quit post");
pa_asyncmsgq_post(q, NULL, QUIT, NULL, 0, NULL, NULL);
pa_thread_free(t);
pa_asyncmsgq_unref(q);
return 0;
}
/* Called from thread context */
static int sink_input_pop_cb(pa_sink_input *i, size_t length, pa_memchunk *chunk) {
connection *c;
pa_sink_input_assert_ref(i);
c = CONNECTION(i->userdata);
connection_assert_ref(c);
pa_assert(chunk);
if (pa_memblockq_peek(c->input_memblockq, chunk) < 0) {
c->playback.underrun = true;
if (c->dead && pa_sink_input_safe_to_remove(i))
pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(c), CONNECTION_MESSAGE_UNLINK_CONNECTION, NULL, 0, NULL, NULL);
return -1;
} else {
size_t m;
chunk->length = PA_MIN(length, chunk->length);
c->playback.underrun = false;
pa_memblockq_drop(c->input_memblockq, chunk->length);
m = pa_memblockq_pop_missing(c->input_memblockq);
if (m > 0)
if (pa_atomic_add(&c->playback.missing, (int) m) <= 0)
pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(c), CONNECTION_MESSAGE_REQUEST_DATA, NULL, 0, NULL, NULL);
return 0;
}
}
/* Called from input thread context */
static void source_output_push_cb(pa_source_output *o, const pa_memchunk *chunk) {
struct userdata *u;
pa_memchunk copy;
pa_source_output_assert_ref(o);
pa_source_output_assert_io_context(o);
pa_assert_se(u = o->userdata);
if (u->skip > chunk->length) {
u->skip -= chunk->length;
return;
}
if (u->skip > 0) {
copy = *chunk;
copy.index += u->skip;
copy.length -= u->skip;
u->skip = 0;
chunk = ©
}
pa_asyncmsgq_post(u->asyncmsgq, PA_MSGOBJECT(u->sink_input), SINK_INPUT_MESSAGE_POST, NULL, 0, chunk, NULL);
u->send_counter += (int64_t) chunk->length;
}
static void do_work(connection *c) {
connection_assert_ref(c);
if (c->dead)
return;
if (pa_iochannel_is_readable(c->io))
if (do_read(c) < 0)
goto fail;
if (!c->sink_input && pa_iochannel_is_hungup(c->io))
goto fail;
if (pa_iochannel_is_writable(c->io))
if (do_write(c) < 0)
goto fail;
return;
fail:
if (c->sink_input) {
/* If there is a sink input, we first drain what we already have read before shutting down the connection */
c->dead = TRUE;
pa_iochannel_free(c->io);
c->io = NULL;
pa_asyncmsgq_post(c->sink_input->sink->asyncmsgq, PA_MSGOBJECT(c->sink_input), SINK_INPUT_MESSAGE_DISABLE_PREBUF, NULL, 0, NULL, NULL);
} else
connection_unlink(c);
}
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);
pa_thread_mq_install(&u->thread_mq);
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 ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0)
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");
}
static int jack_buffer_size(jack_nframes_t nframes, void *arg) {
struct userdata *u = arg;
pa_log_info("JACK buffer size changed.");
pa_asyncmsgq_post(u->jack_msgq, PA_MSGOBJECT(u->sink), SINK_MESSAGE_BUFFER_SIZE, NULL, nframes, NULL, NULL);
return 0;
}
static void thread_func(void *userdata) {
struct userdata *u = userdata;
int ret;
pa_usec_t now;
pa_assert(u);
pa_log_debug("Thread starting up");
pa_thread_mq_install(&u->thread_mq);
u->timestamp = pa_rtclock_now();
for (;;) {
if (u->sink->thread_info.state == PA_SINK_RUNNING) {
now = pa_rtclock_now();
if (u->sink->thread_info.rewind_requested) {
if (u->sink->thread_info.rewind_nbytes > 0) {
process_rewind(u, now);
} else {
pa_sink_process_rewind(u->sink, 0);
}
}
if (u->timestamp <= now) {
pa_log_debug("thread_func: calling process_render");
process_render(u, now);
}
pa_rtpoll_set_timer_absolute(u->rtpoll, u->timestamp);
} else {
pa_rtpoll_set_timer_disabled(u->rtpoll);
}
if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0) {
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");
}
static void on_close(void*userdata) {
struct userdata *u = userdata;
pa_assert(u);
pa_log_debug("Connection closed, informing IO thread...");
pa_asyncmsgq_post(u->thread_mq.inq, PA_MSGOBJECT(u->sink), SINK_MESSAGE_RIP_SOCKET, NULL, 0, NULL, NULL);
}
static void thread_func(void *userdata) {
struct userdata *u = userdata;
pa_assert(u);
pa_log_debug("Thread starting up");
pa_thread_mq_install(&u->thread_mq);
for(;;){
struct pollfd *pollfd;
int ret;
pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
/* Render some data and write it to the fifo */
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 (pollfd->revents) {
if (process_render(u) < 0)
goto fail;
pollfd->revents = 0;
}
}
/* Hmm, nothing to do. Let's sleep */
pollfd->events = (short) (u->sink->thread_info.state == PA_SINK_RUNNING ? POLLOUT : 0);
if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0)
goto fail;
if (ret == 0)
goto finish;
pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
if (pollfd->revents & ~POLLOUT) {
pa_log("FIFO shutdown.");
goto fail;
}
}
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);
pa_log_debug("Shutting down Xen...");
xen_cleanup();
finish:
pa_log_debug("Thread shutting down");
}
static int do_write(struct userdata *u) {
ssize_t r;
pa_assert(u);
if (!pa_iochannel_is_writable(u->io))
return 0;
if (u->write_data) {
pa_assert(u->write_index < u->write_length);
if ((r = pa_iochannel_write(u->io, (uint8_t*) u->write_data + u->write_index, u->write_length - u->write_index)) <= 0) {
pa_log("write() failed: %s", pa_cstrerror(errno));
return -1;
}
u->write_index += (size_t) r;
pa_assert(u->write_index <= u->write_length);
if (u->write_index == u->write_length) {
pa_xfree(u->write_data);
u->write_data = NULL;
u->write_index = u->write_length = 0;
}
}
if (!u->write_data && u->state == STATE_PREPARE) {
int so_sndbuf = 0;
socklen_t sl = sizeof(int);
/* OK, we're done with sending all control data we need to, so
* let's hand the socket over to the IO thread now */
pa_assert(u->fd < 0);
u->fd = pa_iochannel_get_send_fd(u->io);
pa_iochannel_set_noclose(u->io, TRUE);
pa_iochannel_free(u->io);
u->io = NULL;
pa_make_tcp_socket_low_delay(u->fd);
if (getsockopt(u->fd, SOL_SOCKET, SO_SNDBUF, &so_sndbuf, &sl) < 0)
pa_log_warn("getsockopt(SO_SNDBUF) failed: %s", pa_cstrerror(errno));
else {
pa_log_debug("SO_SNDBUF is %zu.", (size_t) so_sndbuf);
pa_sink_set_max_request(u->sink, PA_MAX((size_t) so_sndbuf, u->block_size));
}
pa_log_debug("Connection authenticated, handing fd to IO thread...");
pa_asyncmsgq_post(u->thread_mq.inq, PA_MSGOBJECT(u->sink), SINK_MESSAGE_PASS_SOCKET, NULL, 0, NULL, NULL);
u->state = STATE_RUNNING;
}
return 0;
}
static int do_read(connection *c) {
pa_memchunk chunk;
ssize_t r;
size_t l;
void *p;
size_t space = 0;
connection_assert_ref(c);
if (!c->sink_input || (l = (size_t) pa_atomic_load(&c->playback.missing)) <= 0)
return 0;
if (c->playback.current_memblock) {
space = pa_memblock_get_length(c->playback.current_memblock) - c->playback.memblock_index;
if (space <= 0) {
pa_memblock_unref(c->playback.current_memblock);
c->playback.current_memblock = NULL;
}
}
if (!c->playback.current_memblock) {
pa_assert_se(c->playback.current_memblock = pa_memblock_new(c->protocol->core->mempool, (size_t) -1));
c->playback.memblock_index = 0;
space = pa_memblock_get_length(c->playback.current_memblock);
}
if (l > space)
l = space;
p = pa_memblock_acquire(c->playback.current_memblock);
r = pa_iochannel_read(c->io, (uint8_t*) p + c->playback.memblock_index, l);
pa_memblock_release(c->playback.current_memblock);
if (r <= 0) {
if (r < 0 && (errno == EINTR || errno == EAGAIN))
return 0;
pa_log_debug("read(): %s", r == 0 ? "EOF" : pa_cstrerror(errno));
return -1;
}
chunk.memblock = c->playback.current_memblock;
chunk.index = c->playback.memblock_index;
chunk.length = (size_t) r;
c->playback.memblock_index += (size_t) r;
pa_asyncmsgq_post(c->sink_input->sink->asyncmsgq, PA_MSGOBJECT(c->sink_input), SINK_INPUT_MESSAGE_POST_DATA, NULL, 0, &chunk, NULL);
pa_atomic_sub(&c->playback.missing, (int) r);
return 0;
}
/* Called from thread context */
static void source_output_push_cb(pa_source_output *o, const pa_memchunk *chunk) {
connection *c;
pa_source_output_assert_ref(o);
c = CONNECTION(o->userdata);
pa_assert(c);
pa_assert(chunk);
pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(c), CONNECTION_MESSAGE_POST_DATA, NULL, 0, chunk, NULL);
}
/* Called from input thread context */
static void source_output_process_rewind_cb(pa_source_output *o, size_t nbytes) {
struct userdata *u;
pa_source_output_assert_ref(o);
pa_source_output_assert_io_context(o);
pa_assert_se(u = o->userdata);
pa_asyncmsgq_post(u->asyncmsgq, PA_MSGOBJECT(u->sink_input), SINK_INPUT_MESSAGE_REWIND, NULL, (int64_t) nbytes, NULL, NULL);
u->send_counter -= (int64_t) nbytes;
}
/* Called from output thread context */
static void sink_input_update_max_request_cb(pa_sink_input *i, size_t nbytes) {
struct userdata *u;
pa_sink_input_assert_ref(i);
pa_sink_input_assert_io_context(i);
pa_assert_se(u = i->userdata);
pa_memblockq_set_prebuf(u->memblockq, nbytes*2);
pa_log_info("Max request changed");
pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(u->sink_input), SINK_INPUT_MESSAGE_MAX_REQUEST_CHANGED, NULL, 0, NULL, NULL);
}
static void thread_func(void *userdata) {
struct userdata *u = userdata;
pa_assert(u);
pa_assert(u->sink || u->source);
pa_log_debug("Thread starting up");
if (u->core->realtime_scheduling)
pa_make_realtime(u->core->realtime_priority);
pa_thread_mq_install(&u->thread_mq);
for (;;) {
int ret;
pa_bool_t need_timer = FALSE;
if (u->sink) {
if (PA_UNLIKELY(u->sink->thread_info.rewind_requested))
pa_sink_process_rewind(u->sink, 0);
if (PA_SINK_IS_OPENED(u->sink->thread_info.state)) {
do_write(u);
need_timer = TRUE;
}
}
if (u->source && PA_SOURCE_IS_OPENED(u->source->thread_info.state)) {
do_read(u);
need_timer = TRUE;
}
if (need_timer)
pa_rtpoll_set_timer_relative(u->rtpoll, u->poll_timeout);
else
pa_rtpoll_set_timer_disabled(u->rtpoll);
/* Hmm, nothing to do. Let's sleep */
if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0)
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");
}
static void thread_func(void *userdata) {
struct userdata *u = userdata;
pa_assert(u);
pa_log_debug("Thread starting up");
pa_thread_mq_install(&u->thread_mq);
u->timestamp = pa_rtclock_now();
for (;;) {
int ret;
/* Generate some null data */
if (PA_SOURCE_IS_OPENED(u->source->thread_info.state)) {
pa_usec_t now;
pa_memchunk chunk;
now = pa_rtclock_now();
if ((chunk.length = pa_usec_to_bytes(now - u->timestamp, &u->source->sample_spec)) > 0) {
chunk.memblock = pa_memblock_new(u->core->mempool, (size_t) -1); /* or chunk.length? */
chunk.index = 0;
pa_source_post(u->source, &chunk);
pa_memblock_unref(chunk.memblock);
u->timestamp = now;
}
pa_rtpoll_set_timer_absolute(u->rtpoll, u->timestamp + u->latency_time * PA_USEC_PER_MSEC);
} else
pa_rtpoll_set_timer_disabled(u->rtpoll);
/* Hmm, nothing to do. Let's sleep */
if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0)
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 main context */
int pa_source_output_set_rate(pa_source_output *o, uint32_t rate) {
pa_source_output_assert_ref(o);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
pa_return_val_if_fail(o->thread_info.resampler, -PA_ERR_BADSTATE);
if (o->sample_spec.rate == rate)
return 0;
o->sample_spec.rate = rate;
pa_asyncmsgq_post(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_SET_RATE, PA_UINT_TO_PTR(rate), 0, NULL, NULL);
pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
return 0;
}
static void thread_func(void *userdata) {
struct userdata *u = userdata;
pa_assert(u);
pa_log_debug("Thread starting up");
pa_thread_mq_install(&u->thread_mq);
u->timestamp = pa_rtclock_now();
for (;;) {
pa_usec_t now = 0;
int ret;
if (PA_SINK_IS_OPENED(u->sink->thread_info.state))
now = pa_rtclock_now();
if (PA_UNLIKELY(u->sink->thread_info.rewind_requested))
process_rewind(u, now);
/* Render some data and drop it immediately */
if (PA_SINK_IS_OPENED(u->sink->thread_info.state)) {
if (u->timestamp <= now)
process_render(u, now);
pa_rtpoll_set_timer_absolute(u->rtpoll, u->timestamp);
} else
pa_rtpoll_set_timer_disabled(u->rtpoll);
/* Hmm, nothing to do. Let's sleep */
if ((ret = pa_rtpoll_run(u->rtpoll)) < 0)
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");
}
static void thread_func(void *userdata) {
struct userdata *u = userdata;
pa_assert(u);
pa_log_debug("Thread starting up");
pa_thread_mq_install(&u->thread_mq);
pa_rtpoll_install(u->rtpoll);
pa_rtclock_get(&u->timestamp);
for (;;) {
int ret;
/* Render some data and drop it immediately */
if (u->sink->thread_info.state == PA_SINK_RUNNING) {
struct timeval now;
pa_rtclock_get(&now);
if (pa_timeval_cmp(&u->timestamp, &now) <= 0) {
pa_sink_skip(u->sink, u->block_size);
pa_timeval_add(&u->timestamp, pa_bytes_to_usec(u->block_size, &u->sink->sample_spec));
}
pa_rtpoll_set_timer_absolute(u->rtpoll, &u->timestamp);
} else
pa_rtpoll_set_timer_disabled(u->rtpoll);
/* Hmm, nothing to do. Let's sleep */
if ((ret = pa_rtpoll_run(u->rtpoll, 1)) < 0)
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");
}
static void process_error(struct example_sink_userdata *u)
{
pa_assert(u);
pa_asyncmsgq_post(
u->thread_mq.outq,
PA_MSGOBJECT(u->module->core),
PA_CORE_MESSAGE_UNLOAD_MODULE,
u->module,
0,
NULL,
NULL);
pa_asyncmsgq_wait_for(
u->thread_mq.inq,
PA_MESSAGE_SHUTDOWN);
}
static void thread_func (void *userdata)
{
struct userdata *u = userdata;
pa_assert(u);
pa_thread_mq_install(&u->thread_mq);
u->timestamp = pa_rtclock_now();
for(;;) {
int ret;
if (PA_SINK_IS_OPENED(u->sink->thread_info.state)) {
pa_usec_t now;
now = pa_rtclock_now();
if (u->sink->thread_info.rewind_requested) {
pa_log ("rewind requested......");
}
if (u->timestamp <= now) ;
//process_render(u, now);
pa_rtpoll_set_timer_absolute(u->rtpoll, u->timestamp);
} else
pa_rtpoll_set_timer_disabled(u->rtpoll);
ret = pa_rtpoll_run(u->rtpoll, TRUE);
if (ret < 0)
goto fail;
if (ret == 0)
goto finish;
}
fail:
/* something went wrong. Tell core to unload module */
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");
}
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);
pa_thread_mq_install(&u->thread_mq);
u->timestamp = pa_rtclock_now();
for (;;) {
int ret;
if (PA_SOURCE_IS_OPENED(u->source->thread_info.state)) {
thread_read(u);
pa_rtpoll_set_timer_absolute(u->rtpoll, u->timestamp);
} else
pa_rtpoll_set_timer_disabled(u->rtpoll);
/* Sleep */
if ((ret = pa_rtpoll_run(u->rtpoll)) < 0)
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.");
}
static int sink_input_pop_cb(pa_sink_input *i, size_t nbytes, pa_memchunk *chunk) {
memblockq_stream *u;
pa_sink_input_assert_ref(i);
pa_assert(chunk);
u = MEMBLOCKQ_STREAM(i->userdata);
memblockq_stream_assert_ref(u);
if (!u->memblockq)
return -1;
if (pa_memblockq_peek(u->memblockq, chunk) < 0) {
if (pa_sink_input_safe_to_remove(i)) {
pa_memblockq_free(u->memblockq);
u->memblockq = NULL;
pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(u), MEMBLOCKQ_STREAM_MESSAGE_UNLINK, NULL, 0, NULL, NULL);
}
return -1;
}
/* If there's no memblock, there's going to be data in the memblockq after
* a gap with length chunk->length. Drop the the gap and peek the actual
* data. There should always be some data coming - hence the assert. The
* gap will occur if the memblockq is rewound beyond index 0.*/
if (!chunk->memblock) {
pa_memblockq_drop(u->memblockq, chunk->length);
pa_assert_se(pa_memblockq_peek(u->memblockq, chunk) >= 0);
}
chunk->length = PA_MIN(chunk->length, nbytes);
pa_memblockq_drop(u->memblockq, chunk->length);
return 0;
}
static void on_connection(int fd, void*userdata) {
int so_sndbuf = 0;
socklen_t sl = sizeof(int);
struct userdata *u = userdata;
pa_assert(u);
pa_assert(u->fd < 0);
u->fd = fd;
if (getsockopt(u->fd, SOL_SOCKET, SO_SNDBUF, &so_sndbuf, &sl) < 0)
pa_log_warn("getsockopt(SO_SNDBUF) failed: %s", pa_cstrerror(errno));
else {
pa_log_debug("SO_SNDBUF is %zu.", (size_t) so_sndbuf);
pa_sink_set_max_request(u->sink, PA_MAX((size_t) so_sndbuf, u->block_size));
}
/* Set the initial volume */
sink_set_volume_cb(u->sink);
pa_log_debug("Connection authenticated, handing fd to IO thread...");
pa_asyncmsgq_post(u->thread_mq.inq, PA_MSGOBJECT(u->sink), SINK_MESSAGE_PASS_SOCKET, NULL, 0, NULL, NULL);
}
static void thread_func(void *userdata) {
struct userdata *u = userdata;
int read_type = 0;
pa_assert(u);
pa_log_debug("Thread starting up");
pa_thread_mq_install(&u->thread_mq);
for (;;) {
int ret;
struct pollfd *pollfd;
pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
/* Try to read some data and pass it on to the source driver */
if (u->source->thread_info.state == PA_SOURCE_RUNNING && pollfd->revents) {
ssize_t l;
void *p;
if (!u->memchunk.memblock) {
u->memchunk.memblock = pa_memblock_new(u->core->mempool, pa_pipe_buf(u->fd));
u->memchunk.index = u->memchunk.length = 0;
}
pa_assert(pa_memblock_get_length(u->memchunk.memblock) > u->memchunk.index);
p = pa_memblock_acquire(u->memchunk.memblock);
l = pa_read(u->fd, (uint8_t*) p + u->memchunk.index, pa_memblock_get_length(u->memchunk.memblock) - u->memchunk.index, &read_type);
pa_memblock_release(u->memchunk.memblock);
pa_assert(l != 0); /* EOF cannot happen, since we opened the fifo for both reading and writing */
if (l < 0) {
if (errno == EINTR)
continue;
else if (errno != EAGAIN) {
pa_log("Failed to read data from FIFO: %s", pa_cstrerror(errno));
goto fail;
}
} else {
u->memchunk.length = (size_t) l;
pa_source_post(u->source, &u->memchunk);
u->memchunk.index += (size_t) l;
if (u->memchunk.index >= pa_memblock_get_length(u->memchunk.memblock)) {
pa_memblock_unref(u->memchunk.memblock);
pa_memchunk_reset(&u->memchunk);
}
pollfd->revents = 0;
}
}
/* Hmm, nothing to do. Let's sleep */
pollfd->events = (short) (u->source->thread_info.state == PA_SOURCE_RUNNING ? POLLIN : 0);
if ((ret = pa_rtpoll_run(u->rtpoll)) < 0)
goto fail;
if (ret == 0)
goto finish;
pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
if (pollfd->revents & ~POLLIN) {
pa_log("FIFO shutdown.");
goto fail;
}
}
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");
}
static void thread_func(void *userdata) {
struct userdata *u = userdata;
int write_type = 0, read_type = 0;
short revents = 0;
pa_assert(u);
pa_log_debug("Thread starting up");
if (u->core->realtime_scheduling)
pa_make_realtime(u->core->realtime_priority);
pa_thread_mq_install(&u->thread_mq);
for (;;) {
int ret;
/* pa_log("loop"); */
if (PA_UNLIKELY(u->sink && u->sink->thread_info.rewind_requested))
pa_sink_process_rewind(u->sink, 0);
/* Render some data and write it to the dsp */
if (u->sink && PA_SINK_IS_OPENED(u->sink->thread_info.state) && ((revents & POLLOUT) || u->use_mmap || u->use_getospace)) {
if (u->use_mmap) {
if ((ret = mmap_write(u)) < 0)
goto fail;
revents &= ~POLLOUT;
if (ret > 0)
continue;
} else {
ssize_t l;
pa_bool_t loop = FALSE, work_done = FALSE;
l = (ssize_t) u->out_fragment_size;
if (u->use_getospace) {
audio_buf_info info;
if (ioctl(u->fd, SNDCTL_DSP_GETOSPACE, &info) < 0) {
pa_log_info("Device doesn't support SNDCTL_DSP_GETOSPACE: %s", pa_cstrerror(errno));
u->use_getospace = FALSE;
} else {
l = info.bytes;
/* We loop only if GETOSPACE worked and we
* actually *know* that we can write more than
* one fragment at a time */
loop = TRUE;
}
}
/* Round down to multiples of the fragment size,
* because OSS needs that (at least some versions
* do) */
l = (l/(ssize_t) u->out_fragment_size) * (ssize_t) u->out_fragment_size;
/* Hmm, so poll() signalled us that we can read
* something, but GETOSPACE told us there was nothing?
* Hmm, make the best of it, try to read some data, to
* avoid spinning forever. */
if (l <= 0 && (revents & POLLOUT)) {
l = (ssize_t) u->out_fragment_size;
loop = FALSE;
}
while (l > 0) {
void *p;
ssize_t t;
if (u->memchunk.length <= 0)
pa_sink_render(u->sink, (size_t) l, &u->memchunk);
pa_assert(u->memchunk.length > 0);
p = pa_memblock_acquire(u->memchunk.memblock);
t = pa_write(u->fd, (uint8_t*) p + u->memchunk.index, u->memchunk.length, &write_type);
pa_memblock_release(u->memchunk.memblock);
/* pa_log("wrote %i bytes of %u", t, l); */
pa_assert(t != 0);
if (t < 0) {
if (errno == EINTR)
continue;
else if (errno == EAGAIN) {
pa_log_debug("EAGAIN");
revents &= ~POLLOUT;
break;
} else {
pa_log("Failed to write data to DSP: %s", pa_cstrerror(errno));
goto fail;
}
} else {
u->memchunk.index += (size_t) t;
u->memchunk.length -= (size_t) t;
if (u->memchunk.length <= 0) {
pa_memblock_unref(u->memchunk.memblock);
pa_memchunk_reset(&u->memchunk);
}
l -= t;
revents &= ~POLLOUT;
work_done = TRUE;
}
if (!loop)
break;
}
if (work_done)
continue;
}
}
/* Try to read some data and pass it on to the source driver. */
if (u->source && PA_SOURCE_IS_OPENED(u->source->thread_info.state) && ((revents & POLLIN) || u->use_mmap || u->use_getispace)) {
if (u->use_mmap) {
if ((ret = mmap_read(u)) < 0)
goto fail;
revents &= ~POLLIN;
if (ret > 0)
continue;
} else {
void *p;
ssize_t l;
pa_memchunk memchunk;
pa_bool_t loop = FALSE, work_done = FALSE;
l = (ssize_t) u->in_fragment_size;
if (u->use_getispace) {
audio_buf_info info;
if (ioctl(u->fd, SNDCTL_DSP_GETISPACE, &info) < 0) {
pa_log_info("Device doesn't support SNDCTL_DSP_GETISPACE: %s", pa_cstrerror(errno));
u->use_getispace = FALSE;
} else {
l = info.bytes;
loop = TRUE;
}
}
l = (l/(ssize_t) u->in_fragment_size) * (ssize_t) u->in_fragment_size;
if (l <= 0 && (revents & POLLIN)) {
l = (ssize_t) u->in_fragment_size;
loop = FALSE;
}
while (l > 0) {
ssize_t t;
size_t k;
pa_assert(l > 0);
memchunk.memblock = pa_memblock_new(u->core->mempool, (size_t) -1);
k = pa_memblock_get_length(memchunk.memblock);
if (k > (size_t) l)
k = (size_t) l;
k = (k/u->frame_size)*u->frame_size;
p = pa_memblock_acquire(memchunk.memblock);
t = pa_read(u->fd, p, k, &read_type);
pa_memblock_release(memchunk.memblock);
pa_assert(t != 0); /* EOF cannot happen */
/* pa_log("read %i bytes of %u", t, l); */
if (t < 0) {
pa_memblock_unref(memchunk.memblock);
if (errno == EINTR)
continue;
else if (errno == EAGAIN) {
pa_log_debug("EAGAIN");
revents &= ~POLLIN;
break;
} else {
pa_log("Failed to read data from DSP: %s", pa_cstrerror(errno));
goto fail;
}
} else {
memchunk.index = 0;
memchunk.length = (size_t) t;
pa_source_post(u->source, &memchunk);
pa_memblock_unref(memchunk.memblock);
l -= t;
revents &= ~POLLIN;
work_done = TRUE;
}
if (!loop)
break;
}
if (work_done)
continue;
}
}
/* pa_log("loop2 revents=%i", revents); */
if (u->rtpoll_item) {
struct pollfd *pollfd;
pa_assert(u->fd >= 0);
pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
pollfd->events = (short)
(((u->source && PA_SOURCE_IS_OPENED(u->source->thread_info.state)) ? POLLIN : 0) |
((u->sink && PA_SINK_IS_OPENED(u->sink->thread_info.state)) ? POLLOUT : 0));
}
/* Hmm, nothing to do. Let's sleep */
if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0)
goto fail;
if (ret == 0)
goto finish;
if (u->rtpoll_item) {
struct pollfd *pollfd;
pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
if (pollfd->revents & ~(POLLOUT|POLLIN)) {
pa_log("DSP shutdown.");
goto fail;
}
revents = pollfd->revents;
} else
revents = 0;
}
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");
}
static void thread_func(void *userdata) {
struct userdata *u = userdata;
int write_type = 0;
pa_memchunk silence;
uint32_t silence_overhead = 0;
double silence_ratio = 0;
pa_assert(u);
pa_log_debug("Thread starting up");
pa_thread_mq_install(&u->thread_mq);
pa_smoother_set_time_offset(u->smoother, pa_rtclock_now());
/* Create a chunk of memory that is our encoded silence sample. */
pa_memchunk_reset(&silence);
for (;;) {
int ret;
if (PA_UNLIKELY(u->sink->thread_info.rewind_requested))
pa_sink_process_rewind(u->sink, 0);
if (u->rtpoll_item) {
struct pollfd *pollfd;
pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
/* Render some data and write it to the fifo */
if (/*PA_SINK_IS_OPENED(u->sink->thread_info.state) && */pollfd->revents) {
pa_usec_t usec;
int64_t n;
void *p;
if (!silence.memblock) {
pa_memchunk silence_tmp;
pa_memchunk_reset(&silence_tmp);
silence_tmp.memblock = pa_memblock_new(u->core->mempool, 4096);
silence_tmp.length = 4096;
p = pa_memblock_acquire(silence_tmp.memblock);
memset(p, 0, 4096);
pa_memblock_release(silence_tmp.memblock);
pa_raop_client_encode_sample(u->raop, &silence_tmp, &silence);
pa_assert(0 == silence_tmp.length);
silence_overhead = silence_tmp.length - 4096;
silence_ratio = silence_tmp.length / 4096;
pa_memblock_unref(silence_tmp.memblock);
}
for (;;) {
ssize_t l;
if (u->encoded_memchunk.length <= 0) {
if (u->encoded_memchunk.memblock)
pa_memblock_unref(u->encoded_memchunk.memblock);
if (PA_SINK_IS_OPENED(u->sink->thread_info.state)) {
size_t rl;
/* We render real data */
if (u->raw_memchunk.length <= 0) {
if (u->raw_memchunk.memblock)
pa_memblock_unref(u->raw_memchunk.memblock);
pa_memchunk_reset(&u->raw_memchunk);
/* Grab unencoded data */
pa_sink_render(u->sink, u->block_size, &u->raw_memchunk);
}
pa_assert(u->raw_memchunk.length > 0);
/* Encode it */
rl = u->raw_memchunk.length;
u->encoding_overhead += u->next_encoding_overhead;
pa_raop_client_encode_sample(u->raop, &u->raw_memchunk, &u->encoded_memchunk);
u->next_encoding_overhead = (u->encoded_memchunk.length - (rl - u->raw_memchunk.length));
u->encoding_ratio = u->encoded_memchunk.length / (rl - u->raw_memchunk.length);
} else {
/* We render some silence into our memchunk */
memcpy(&u->encoded_memchunk, &silence, sizeof(pa_memchunk));
pa_memblock_ref(silence.memblock);
/* Calculate/store some values to be used with the smoother */
u->next_encoding_overhead = silence_overhead;
u->encoding_ratio = silence_ratio;
}
}
pa_assert(u->encoded_memchunk.length > 0);
p = pa_memblock_acquire(u->encoded_memchunk.memblock);
l = pa_write(u->fd, (uint8_t*) p + u->encoded_memchunk.index, u->encoded_memchunk.length, &write_type);
pa_memblock_release(u->encoded_memchunk.memblock);
pa_assert(l != 0);
if (l < 0) {
if (errno == EINTR)
continue;
else if (errno == EAGAIN) {
/* OK, we filled all socket buffers up
* now. */
goto filled_up;
} else {
pa_log("Failed to write data to FIFO: %s", pa_cstrerror(errno));
goto fail;
}
} else {
u->offset += l;
u->encoded_memchunk.index += l;
u->encoded_memchunk.length -= l;
pollfd->revents = 0;
if (u->encoded_memchunk.length > 0) {
/* we've completely written the encoded data, so update our overhead */
u->encoding_overhead += u->next_encoding_overhead;
/* OK, we wrote less that we asked for,
* hence we can assume that the socket
* buffers are full now */
goto filled_up;
}
}
}
filled_up:
/* At this spot we know that the socket buffers are
* fully filled up. This is the best time to estimate
* the playback position of the server */
n = u->offset - u->encoding_overhead;
#ifdef SIOCOUTQ
{
int l;
if (ioctl(u->fd, SIOCOUTQ, &l) >= 0 && l > 0)
n -= (l / u->encoding_ratio);
}
#endif
usec = pa_bytes_to_usec(n, &u->sink->sample_spec);
if (usec > u->latency)
usec -= u->latency;
else
usec = 0;
pa_smoother_put(u->smoother, pa_rtclock_now(), usec);
}
/* Hmm, nothing to do. Let's sleep */
pollfd->events = POLLOUT; /*PA_SINK_IS_OPENED(u->sink->thread_info.state) ? POLLOUT : 0;*/
}
if ((ret = pa_rtpoll_run(u->rtpoll)) < 0)
goto fail;
if (ret == 0)
goto finish;
if (u->rtpoll_item) {
struct pollfd* pollfd;
pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
if (pollfd->revents & ~POLLOUT) {
if (u->sink->thread_info.state != PA_SINK_SUSPENDED) {
pa_log("FIFO shutdown.");
goto fail;
}
/* We expect this to happen on occasion if we are not sending data.
It's perfectly natural and normal and natural */
if (u->rtpoll_item)
pa_rtpoll_item_free(u->rtpoll_item);
u->rtpoll_item = NULL;
}
}
}
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:
if (silence.memblock)
pa_memblock_unref(silence.memblock);
pa_log_debug("Thread shutting down");
}
static void jack_shutdown(void* arg) {
struct userdata *u = arg;
pa_log_info("JACK thread shutting down.");
pa_asyncmsgq_post(u->jack_msgq, PA_MSGOBJECT(u->sink), SINK_MESSAGE_ON_SHUTDOWN, NULL, 0, NULL, NULL);
}
static void thread_func(void *userdata) {
struct userdata *u = userdata;
pa_proplist *proplist;
pa_assert(u);
pa_log_debug("Thread starting up");
pa_thread_mq_install(u->thread_mq);
proplist = tunnel_new_proplist(u);
u->context = pa_context_new_with_proplist(u->thread_mainloop_api,
"PulseAudio",
proplist);
pa_proplist_free(proplist);
if (!u->context) {
pa_log("Failed to create libpulse context");
goto fail;
}
if (u->cookie_file && pa_context_load_cookie_from_file(u->context, u->cookie_file) != 0) {
pa_log_error("Can not load cookie file!");
goto fail;
}
pa_context_set_state_callback(u->context, context_state_cb, u);
if (pa_context_connect(u->context,
u->remote_server,
PA_CONTEXT_NOAUTOSPAWN,
NULL) < 0) {
pa_log("Failed to connect libpulse context");
goto fail;
}
for (;;) {
int ret;
if (pa_mainloop_iterate(u->thread_mainloop, 1, &ret) < 0) {
if (ret == 0)
goto finish;
else
goto fail;
}
if (PA_UNLIKELY(u->sink->thread_info.rewind_requested))
pa_sink_process_rewind(u->sink, 0);
if (u->connected &&
pa_stream_get_state(u->stream) == PA_STREAM_READY &&
PA_SINK_IS_LINKED(u->sink->thread_info.state)) {
size_t writable;
writable = pa_stream_writable_size(u->stream);
if (writable > 0) {
if(u->transcode.encoding != -1) {
pa_memchunk memchunk;
const void *p;
size_t nbBytes;
unsigned char *cbits;
pa_sink_render_full(u->sink, u->transcode.frame_size*u->transcode.channels*u->transcode.sample_size, &memchunk);
pa_assert(memchunk.length > 0);
pa_assert(memchunk.length >= u->transcode.frame_size*u->transcode.channels);
pa_log_debug("received memchunk length: %zu bytes", memchunk.length );
/* we have new data to write */
p = pa_memblock_acquire(memchunk.memblock);
nbBytes = pa_transcode_encode(&u->transcode, (uint8_t*) p + memchunk.index, &cbits);
pa_log_debug("encoded length: %zu bytes", nbBytes);
/* TODO: Use pa_stream_begin_write() to reduce copying. */
ret = pa_stream_write_compressed(u->stream,
(uint8_t*) cbits,
nbBytes,
NULL, /**< A cleanup routine for the data or NULL to request an internal copy */
0, /** offset */
PA_SEEK_RELATIVE, u->transcode.frame_size*u->transcode.channels*u->transcode.sample_size);
pa_memblock_release(memchunk.memblock);
pa_memblock_unref(memchunk.memblock);
if(nbBytes > 0) free(cbits);
if (ret != 0) {
pa_log_error("Could not write data into the stream ... ret = %i", ret);
u->thread_mainloop_api->quit(u->thread_mainloop_api, TUNNEL_THREAD_FAILED_MAINLOOP);
}
}
else {
pa_memchunk memchunk;
const void *p;
pa_sink_render_full(u->sink, writable, &memchunk);
pa_assert(memchunk.length > 0);
/* we have new data to write */
p = pa_memblock_acquire(memchunk.memblock);
/* TODO: Use pa_stream_begin_write() to reduce copying. */
ret = pa_stream_write(u->stream,
(uint8_t*) p + memchunk.index,
memchunk.length,
NULL, /**< A cleanup routine for the data or NULL to request an internal copy */
0, /** offset */
PA_SEEK_RELATIVE);
pa_memblock_release(memchunk.memblock);
pa_memblock_unref(memchunk.memblock);
if (ret != 0) {
pa_log_error("Could not write data into the stream ... ret = %i", ret);
u->thread_mainloop_api->quit(u->thread_mainloop_api, TUNNEL_THREAD_FAILED_MAINLOOP);
}
}
}
}
}
fail:
pa_asyncmsgq_post(u->thread_mq->outq, PA_MSGOBJECT(u->module->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
pa_asyncmsgq_wait_for(u->thread_mq->inq, PA_MESSAGE_SHUTDOWN);
finish:
if (u->stream) {
pa_stream_disconnect(u->stream);
pa_stream_unref(u->stream);
u->stream = NULL;
}
if (u->context) {
pa_context_disconnect(u->context);
pa_context_unref(u->context);
u->context = NULL;
}
pa_log_debug("Thread shutting down");
}
static int sink_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *memchunk) {
struct userdata *u = PA_SINK(o)->userdata;
switch (code) {
case SINK_MESSAGE_RENDER:
/* Handle the request from the JACK thread */
if (u->sink->thread_info.state == PA_SINK_RUNNING) {
pa_memchunk chunk;
size_t nbytes;
void *p;
pa_assert(offset > 0);
nbytes = (size_t) offset * pa_frame_size(&u->sink->sample_spec);
pa_sink_render_full(u->sink, nbytes, &chunk);
p = (uint8_t*) pa_memblock_acquire(chunk.memblock) + chunk.index;
pa_deinterleave(p, u->buffer, u->channels, sizeof(float), (unsigned) offset);
pa_memblock_release(chunk.memblock);
pa_memblock_unref(chunk.memblock);
} else {
unsigned c;
pa_sample_spec ss;
/* Humm, we're not RUNNING, hence let's write some silence */
ss = u->sink->sample_spec;
ss.channels = 1;
for (c = 0; c < u->channels; c++)
pa_silence_memory(u->buffer[c], (size_t) offset * pa_sample_size(&ss), &ss);
}
u->frames_in_buffer = (jack_nframes_t) offset;
u->saved_frame_time = * (jack_nframes_t*) data;
u->saved_frame_time_valid = TRUE;
return 0;
case SINK_MESSAGE_BUFFER_SIZE:
pa_sink_set_max_request_within_thread(u->sink, (size_t) offset * pa_frame_size(&u->sink->sample_spec));
return 0;
case SINK_MESSAGE_ON_SHUTDOWN:
pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
return 0;
case PA_SINK_MESSAGE_GET_LATENCY: {
jack_nframes_t l, ft, d;
size_t n;
/* This is the "worst-case" latency */
l = jack_port_get_total_latency(u->client, u->port[0]) + u->frames_in_buffer;
if (u->saved_frame_time_valid) {
/* Adjust the worst case latency by the time that
* passed since we last handed data to JACK */
ft = jack_frame_time(u->client);
d = ft > u->saved_frame_time ? ft - u->saved_frame_time : 0;
l = l > d ? l - d : 0;
}
/* Convert it to usec */
n = l * pa_frame_size(&u->sink->sample_spec);
*((pa_usec_t*) data) = pa_bytes_to_usec(n, &u->sink->sample_spec);
return 0;
}
}
return pa_sink_process_msg(o, code, data, offset, memchunk);
}