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 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 w, r;
r = pa_smoother_get(u->smoother, pa_rtclock_now());
w = pa_bytes_to_usec((uint64_t) u->offset + u->memchunk.length, &u->sink->sample_spec);
*((int64_t*) data) = (int64_t)w - r;
return 0;
}
case SINK_MESSAGE_PASS_SOCKET: {
struct pollfd *pollfd;
pa_assert(!u->rtpoll_item);
u->rtpoll_item = pa_rtpoll_item_new(u->rtpoll, PA_RTPOLL_NEVER, 1);
pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
pollfd->fd = u->fd;
pollfd->events = pollfd->revents = 0;
return 0;
}
}
return pa_sink_process_msg(o, code, data, offset, chunk);
}
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:
switch ((pa_sink_state_t) PA_PTR_TO_UINT(data)) {
case PA_SINK_SUSPENDED:
pa_assert(PA_SINK_IS_OPENED(u->sink->thread_info.state));
pa_smoother_pause(u->smoother, pa_rtclock_now());
break;
case PA_SINK_IDLE:
case PA_SINK_RUNNING:
if (u->sink->thread_info.state == PA_SINK_SUSPENDED)
pa_smoother_resume(u->smoother, pa_rtclock_now(), TRUE);
break;
case PA_SINK_UNLINKED:
case PA_SINK_INIT:
case PA_SINK_INVALID_STATE:
;
}
break;
case PA_SINK_MESSAGE_GET_LATENCY: {
pa_usec_t w, r;
r = pa_smoother_get(u->smoother, pa_rtclock_now());
w = pa_bytes_to_usec((uint64_t) u->offset + u->memchunk.length, &u->sink->sample_spec);
*((pa_usec_t*) data) = w > r ? w - r : 0;
return 0;
}
case SINK_MESSAGE_PASS_SOCKET: {
struct pollfd *pollfd;
pa_assert(!u->rtpoll_item);
u->rtpoll_item = pa_rtpoll_item_new(u->rtpoll, PA_RTPOLL_NEVER, 1);
pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
pollfd->fd = u->fd;
pollfd->events = pollfd->revents = 0;
return 0;
}
}
return pa_sink_process_msg(o, code, data, offset, chunk);
}
int main(int argc, char *argv[]) {
pa_rtpoll *p;
pa_rtpoll_item *i, *w;
struct pollfd *pollfd;
p = pa_rtpoll_new();
i = pa_rtpoll_item_new(p, PA_RTPOLL_EARLY, 1);
pa_rtpoll_item_set_before_callback(i, before);
pa_rtpoll_item_set_after_callback(i, after);
pollfd = pa_rtpoll_item_get_pollfd(i, NULL);
pollfd->fd = 0;
pollfd->events = POLLIN;
w = pa_rtpoll_item_new(p, PA_RTPOLL_NORMAL, 0);
pa_rtpoll_item_set_before_callback(w, worker);
pa_rtpoll_set_timer_relative(p, 10000000); /* 10 s */
pa_rtpoll_run(p, 1);
pa_rtpoll_item_free(i);
i = pa_rtpoll_item_new(p, PA_RTPOLL_EARLY, 1);
pa_rtpoll_item_set_before_callback(i, before);
pa_rtpoll_item_set_after_callback(i, after);
pollfd = pa_rtpoll_item_get_pollfd(i, NULL);
pollfd->fd = 0;
pollfd->events = POLLIN;
pa_rtpoll_run(p, 1);
pa_rtpoll_item_free(i);
pa_rtpoll_item_free(w);
pa_rtpoll_free(p);
return 0;
}
static void build_pollfd(struct userdata *u) {
struct pollfd *pollfd;
pa_assert(u);
pa_assert(!u->rtpoll_item);
u->rtpoll_item = pa_rtpoll_item_new(u->rtpoll, PA_RTPOLL_NEVER, 1);
pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
pollfd->fd = u->fd;
pollfd->events = 0;
pollfd->revents = 0;
}
/* Called from I/O thread context */
static int rtpoll_work_cb(pa_rtpoll_item *i) {
pa_memchunk chunk;
int64_t k, j, delta;
struct timeval now = { 0, 0 };
struct session *s;
struct pollfd *p;
pa_assert_se(s = pa_rtpoll_item_get_userdata(i));
p = pa_rtpoll_item_get_pollfd(i, NULL);
if (p->revents & (POLLERR|POLLNVAL|POLLHUP|POLLOUT)) {
pa_log("poll() signalled bad revents.");
return -1;
}
if ((p->revents & POLLIN) == 0)
return 0;
p->revents = 0;
if (pa_rtp_recv(&s->rtp_context, &chunk, s->userdata->module->core->mempool, &now) < 0)
return 0;
if (s->sdp_info.payload != s->rtp_context.payload ||
!PA_SINK_IS_OPENED(s->sink_input->sink->thread_info.state)) {
pa_memblock_unref(chunk.memblock);
return 0;
}
if (!s->first_packet) {
s->first_packet = TRUE;
s->ssrc = s->rtp_context.ssrc;
s->offset = s->rtp_context.timestamp;
if (s->ssrc == s->userdata->module->core->cookie)
pa_log_warn("Detected RTP packet loop!");
} else {
if (s->ssrc != s->rtp_context.ssrc) {
pa_memblock_unref(chunk.memblock);
return 0;
}
}
/* Check whether there was a timestamp overflow */
k = (int64_t) s->rtp_context.timestamp - (int64_t) s->offset;
j = (int64_t) 0x100000000LL - (int64_t) s->offset + (int64_t) s->rtp_context.timestamp;
if ((k < 0 ? -k : k) < (j < 0 ? -j : j))
delta = k;
else
delta = j;
pa_memblockq_seek(s->memblockq, delta * (int64_t) s->rtp_context.frame_size, PA_SEEK_RELATIVE, TRUE);
if (now.tv_sec == 0) {
PA_ONCE_BEGIN {
pa_log_warn("Using artificial time instead of timestamp");
} PA_ONCE_END;
pa_rtclock_get(&now);
} else
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 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:
switch ((pa_sink_state_t) PA_PTR_TO_UINT(data)) {
case PA_SINK_SUSPENDED:
pa_assert(PA_SINK_IS_OPENED(u->sink->thread_info.state));
pa_smoother_pause(u->smoother, pa_rtclock_now());
/* Issue a FLUSH if we are connected */
if (u->fd >= 0) {
pa_raop_flush(u->raop);
}
break;
case PA_SINK_IDLE:
case PA_SINK_RUNNING:
if (u->sink->thread_info.state == PA_SINK_SUSPENDED) {
pa_smoother_resume(u->smoother, pa_rtclock_now(), true);
/* The connection can be closed when idle, so check to
see if we need to reestablish it */
if (u->fd < 0)
pa_raop_connect(u->raop);
else
pa_raop_flush(u->raop);
}
break;
case PA_SINK_UNLINKED:
case PA_SINK_INIT:
case PA_SINK_INVALID_STATE:
;
}
break;
case PA_SINK_MESSAGE_GET_LATENCY: {
pa_usec_t w, r;
r = pa_smoother_get(u->smoother, pa_rtclock_now());
w = pa_bytes_to_usec((u->offset - u->encoding_overhead + (u->encoded_memchunk.length / u->encoding_ratio)), &u->sink->sample_spec);
*((pa_usec_t*) data) = w > r ? w - r : 0;
return 0;
}
case SINK_MESSAGE_PASS_SOCKET: {
struct pollfd *pollfd;
pa_assert(!u->rtpoll_item);
u->rtpoll_item = pa_rtpoll_item_new(u->rtpoll, PA_RTPOLL_NEVER, 1);
pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
pollfd->fd = u->fd;
pollfd->events = POLLOUT;
/*pollfd->events = */pollfd->revents = 0;
if (u->sink->thread_info.state == PA_SINK_SUSPENDED) {
/* Our stream has been suspended so we just flush it.... */
pa_raop_flush(u->raop);
}
return 0;
}
case SINK_MESSAGE_RIP_SOCKET: {
if (u->fd >= 0) {
pa_close(u->fd);
u->fd = -1;
} else
/* FIXME */
pa_log("We should not get to this state. Cannot rip socket if not connected.");
if (u->sink->thread_info.state == PA_SINK_SUSPENDED) {
pa_log_debug("RTSP control connection closed, but we're suspended so let's not worry about it... we'll open it again later");
if (u->rtpoll_item)
pa_rtpoll_item_free(u->rtpoll_item);
u->rtpoll_item = NULL;
} else {
/* Question: is this valid here: or should we do some sort of:
return pa_sink_process_msg(PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL);
?? */
pa_module_unload_request(u->module, true);
}
return 0;
}
}
return pa_sink_process_msg(o, code, data, offset, chunk);
}
int pa__init(pa_module *m) {
struct userdata *u = NULL;
const char *p;
int fd = -1;
int buffer_size;
int mode;
int record = 1, playback = 1;
pa_sample_spec ss;
pa_channel_map map;
pa_modargs *ma = NULL;
char *t;
struct pollfd *pollfd;
pa_assert(m);
if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
pa_log("failed to parse module arguments.");
goto fail;
}
if (pa_modargs_get_value_boolean(ma, "record", &record) < 0 || pa_modargs_get_value_boolean(ma, "playback", &playback) < 0) {
pa_log("record= and playback= expect numeric argument.");
goto fail;
}
if (!playback && !record) {
pa_log("neither playback nor record enabled for device.");
goto fail;
}
mode = (playback&&record) ? O_RDWR : (playback ? O_WRONLY : (record ? O_RDONLY : 0));
buffer_size = 16384;
if (pa_modargs_get_value_s32(ma, "buffer_size", &buffer_size) < 0) {
pa_log("failed to parse buffer size argument");
goto fail;
}
ss = m->core->default_sample_spec;
if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_DEFAULT) < 0) {
pa_log("failed to parse sample specification");
goto fail;
}
if ((fd = open(p = pa_modargs_get_value(ma, "device", DEFAULT_DEVICE), mode | O_NONBLOCK)) < 0)
goto fail;
pa_log_info("device opened in %s mode.", mode == O_WRONLY ? "O_WRONLY" : (mode == O_RDONLY ? "O_RDONLY" : "O_RDWR"));
if (pa_solaris_auto_format(fd, mode, &ss) < 0)
goto fail;
if (pa_solaris_set_buffer(fd, buffer_size) < 0)
goto fail;
u = pa_xmalloc(sizeof(struct userdata));
u->core = m->core;
u->fd = fd;
pa_memchunk_reset(&u->memchunk);
/* We use this to get a reasonable chunk size */
u->page_size = PA_PAGE_SIZE;
u->frame_size = pa_frame_size(&ss);
u->buffer_size = buffer_size;
u->written_bytes = 0;
u->read_bytes = 0;
u->module = m;
m->userdata = u;
pa_thread_mq_init(&u->thread_mq, m->core->mainloop);
u->rtpoll = pa_rtpoll_new();
pa_rtpoll_item_new_asyncmsgq(u->rtpoll, PA_RTPOLL_EARLY, u->thread_mq.inq);
pa_rtpoll_set_timer_periodic(u->rtpoll, pa_bytes_to_usec(u->buffer_size / 10, &ss));
u->rtpoll_item = pa_rtpoll_item_new(u->rtpoll, PA_RTPOLL_NEVER, 1);
pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
pollfd->fd = fd;
pollfd->events = 0;
pollfd->revents = 0;
if (mode != O_WRONLY) {
u->source = pa_source_new(m->core, __FILE__, pa_modargs_get_value(ma, "source_name", DEFAULT_SOURCE_NAME), 0, &ss, &map);
pa_assert(u->source);
u->source->userdata = u;
u->source->parent.process_msg = source_process_msg;
pa_source_set_module(u->source, m);
pa_source_set_description(u->source, t = pa_sprintf_malloc("Solaris PCM on '%s'", p));
pa_xfree(t);
pa_source_set_asyncmsgq(u->source, u->thread_mq.inq);
pa_source_set_rtpoll(u->source, u->rtpoll);
u->source->flags = PA_SOURCE_HARDWARE|PA_SOURCE_LATENCY|PA_SOURCE_HW_VOLUME_CTRL;
u->source->refresh_volume = 1;
} else
u->source = NULL;
if (mode != O_RDONLY) {
u->sink = pa_sink_new(m->core, __FILE__, pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME), 0, &ss, &map);
pa_assert(u->sink);
u->sink->userdata = u;
u->sink->parent.process_msg = sink_process_msg;
pa_sink_set_module(u->sink, m);
pa_sink_set_description(u->sink, t = pa_sprintf_malloc("Solaris PCM on '%s'", p));
pa_xfree(t);
pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq);
pa_sink_set_rtpoll(u->sink, u->rtpoll);
u->sink->flags = PA_SINK_HARDWARE|PA_SINK_LATENCY|PA_SINK_HW_VOLUME_CTRL;
u->sink->refresh_volume = 1;
u->sink->refresh_mute = 1;
} else
u->sink = NULL;
pa_assert(u->source || u->sink);
u->sig = pa_signal_new(SIGPOLL, sig_callback, u);
pa_assert(u->sig);
ioctl(u->fd, I_SETSIG, S_MSG);
if (!(u->thread = pa_thread_new(thread_func, u))) {
pa_log("Failed to create thread.");
goto fail;
}
/* Read mixer settings */
if (u->source)
pa_asyncmsgq_send(u->thread_mq.inq, PA_MSGOBJECT(u->source), PA_SOURCE_MESSAGE_GET_VOLUME, &u->source->volume, 0, NULL);
if (u->sink) {
pa_asyncmsgq_send(u->thread_mq.inq, PA_MSGOBJECT(u->sink), PA_SINK_MESSAGE_GET_VOLUME, &u->sink->volume, 0, NULL);
pa_asyncmsgq_send(u->thread_mq.inq, PA_MSGOBJECT(u->sink), PA_SINK_MESSAGE_GET_MUTE, &u->sink->muted, 0, NULL);
}
if (u->sink)
pa_sink_put(u->sink);
if (u->source)
pa_source_put(u->source);
pa_modargs_free(ma);
return 0;
fail:
if (u)
pa__done(m);
else if (fd >= 0)
close(fd);
if (ma)
pa_modargs_free(ma);
return -1;
}
int pa__init(pa_module * m)
{
struct userdata *u;
pa_sample_spec ss;
pa_channel_map map;
pa_modargs *ma;
struct pollfd *pollfd;
pa_sink_new_data data_sink;
pa_source_new_data data_source;
pa_assert(m);
pa_log("vchan module loading");
if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
pa_log("Failed to parse module arguments.");
goto fail;
}
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 format specification or channel map");
goto fail;
}
u = pa_xnew0(struct userdata, 1);
u->core = m->core;
u->module = m;
m->userdata = u;
pa_memchunk_reset(&u->memchunk_sink);
pa_memchunk_reset(&u->memchunk_source);
u->rtpoll = pa_rtpoll_new();
pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll);
if ((do_conn(u)) < 0) {
pa_log("get_early_allocated_vchan: %s",
pa_cstrerror(errno));
goto fail;
}
/* SINK preparation */
pa_sink_new_data_init(&data_sink);
data_sink.driver = __FILE__;
data_sink.module = m;
pa_sink_new_data_set_name(&data_sink,
pa_modargs_get_value(ma,
"sink_name",
DEFAULT_SINK_NAME));
pa_proplist_sets(data_sink.proplist,
PA_PROP_DEVICE_STRING, DEFAULT_SINK_NAME);
pa_proplist_setf(data_sink.proplist,
PA_PROP_DEVICE_DESCRIPTION,
"Qubes VCHAN sink");
pa_sink_new_data_set_sample_spec(&data_sink, &ss);
pa_sink_new_data_set_channel_map(&data_sink, &map);
if (pa_modargs_get_proplist
(ma, "sink_properties", data_sink.proplist, PA_UPDATE_REPLACE) < 0) {
pa_log("Invalid properties");
pa_sink_new_data_done(&data_sink);
goto fail;
}
u->sink = pa_sink_new(m->core, &data_sink, PA_SINK_LATENCY);
pa_sink_new_data_done(&data_sink);
if (!u->sink) {
pa_log("Failed to create sink.");
goto fail;
}
u->sink->parent.process_msg = sink_process_msg;
u->sink->userdata = u;
pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq);
pa_sink_set_rtpoll(u->sink, u->rtpoll);
pa_sink_set_max_request(u->sink, VCHAN_BUF);
pa_sink_set_fixed_latency(u->sink,
pa_bytes_to_usec
(VCHAN_BUF,
&u->sink->sample_spec));
u->play_rtpoll_item = pa_rtpoll_item_new(u->rtpoll, PA_RTPOLL_NEVER, 1);
pollfd = pa_rtpoll_item_get_pollfd(u->play_rtpoll_item, NULL);
pollfd->fd = libvchan_fd_for_select(u->play_ctrl);
pollfd->events = POLLIN;
pollfd->revents = 0;
/* SOURCE preparation */
pa_source_new_data_init(&data_source);
data_source.driver = __FILE__;
data_source.module = m;
pa_source_new_data_set_name(&data_source, pa_modargs_get_value(ma, "source_name", DEFAULT_SOURCE_NAME));
pa_proplist_sets(data_source.proplist, PA_PROP_DEVICE_STRING, DEFAULT_SOURCE_NAME);
pa_proplist_setf(data_source.proplist, PA_PROP_DEVICE_DESCRIPTION, "Qubes VCHAN source");
pa_source_new_data_set_sample_spec(&data_source, &ss);
pa_source_new_data_set_channel_map(&data_source, &map);
if (pa_modargs_get_proplist(ma, "source_properties", data_source.proplist, PA_UPDATE_REPLACE) < 0) {
pa_log("Invalid properties");
pa_source_new_data_done(&data_source);
goto fail;
}
u->source = pa_source_new(m->core, &data_source, PA_SOURCE_LATENCY);
pa_source_new_data_done(&data_source);
if (!u->source) {
pa_log("Failed to create source.");
goto fail;
}
u->source->parent.process_msg = source_process_msg;
u->source->userdata = u;
pa_source_set_asyncmsgq(u->source, u->thread_mq.inq);
pa_source_set_rtpoll(u->source, u->rtpoll);
pa_source_set_fixed_latency(u->source, pa_bytes_to_usec(PIPE_BUF, &u->source->sample_spec));
u->rec_rtpoll_item = pa_rtpoll_item_new(u->rtpoll, PA_RTPOLL_NEVER, 1);
pollfd = pa_rtpoll_item_get_pollfd(u->rec_rtpoll_item, NULL);
pollfd->fd = libvchan_fd_for_select(u->rec_ctrl);
pollfd->events = POLLIN;
pollfd->revents = 0;
#if PA_CHECK_VERSION(0,9,22)
if (!(u->thread = pa_thread_new("vchan-sink", thread_func, u))) {
#else
if (!(u->thread = pa_thread_new(thread_func, u))) {
#endif
pa_log("Failed to create thread.");
goto fail;
}
pa_sink_put(u->sink);
pa_source_put(u->source);
pa_modargs_free(ma);
return 0;
fail:
if (ma)
pa_modargs_free(ma);
pa__done(m);
return -1;
}
int pa__get_n_used(pa_module * m)
{
struct userdata *u;
pa_assert(m);
pa_assert_se(u = m->userdata);
return pa_sink_linked_by(u->sink);
}
void pa__done(pa_module * m)
{
struct userdata *u;
pa_assert(m);
if (!(u = m->userdata))
return;
if (u->sink)
pa_sink_unlink(u->sink);
if (u->source)
pa_source_unlink(u->source);
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->source)
pa_source_unref(u->source);
if (u->memchunk_sink.memblock)
pa_memblock_unref(u->memchunk_sink.memblock);
if (u->memchunk_source.memblock)
pa_memblock_unref(u->memchunk_source.memblock);
if (u->play_rtpoll_item)
pa_rtpoll_item_free(u->play_rtpoll_item);
if (u->rec_rtpoll_item)
pa_rtpoll_item_free(u->rec_rtpoll_item);
if (u->rtpoll)
pa_rtpoll_free(u->rtpoll);
if (u->play_ctrl)
libvchan_close(u->play_ctrl);
if (u->rec_ctrl)
libvchan_close(u->rec_ctrl);
pa_xfree(u);
}
static void thread_func(void *userdata) {
struct userdata *u = userdata;
unsigned short revents = 0;
int ret, err;
audio_info_t info;
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);
pa_smoother_set_time_offset(u->smoother, pa_rtclock_now());
for (;;) {
/* Render some data and write it to the dsp */
if (PA_UNLIKELY(u->sink->thread_info.rewind_requested))
process_rewind(u);
if (u->sink && PA_SINK_IS_OPENED(u->sink->thread_info.state)) {
pa_usec_t xtime0, ysleep_interval, xsleep_interval;
uint64_t buffered_bytes;
err = ioctl(u->fd, AUDIO_GETINFO, &info);
if (err < 0) {
pa_log("AUDIO_GETINFO ioctl failed: %s", pa_cstrerror(errno));
goto fail;
}
if (info.play.error) {
pa_log_debug("buffer under-run!");
AUDIO_INITINFO(&info);
info.play.error = 0;
if (ioctl(u->fd, AUDIO_SETINFO, &info) < 0)
pa_log("AUDIO_SETINFO: %s", pa_cstrerror(errno));
pa_smoother_reset(u->smoother, pa_rtclock_now(), true);
}
for (;;) {
void *p;
ssize_t w;
size_t len;
int write_type = 1;
/*
* Since we cannot modify the size of the output buffer we fake it
* by not filling it more than u->buffer_size.
*/
xtime0 = pa_rtclock_now();
buffered_bytes = get_playback_buffered_bytes(u);
if (buffered_bytes >= (uint64_t)u->buffer_size)
break;
len = u->buffer_size - buffered_bytes;
len -= len % u->frame_size;
if (len < (size_t) u->minimum_request)
break;
if (!u->memchunk.length)
pa_sink_render(u->sink, u->sink->thread_info.max_request, &u->memchunk);
len = PA_MIN(u->memchunk.length, len);
p = pa_memblock_acquire(u->memchunk.memblock);
w = pa_write(u->fd, (uint8_t*) p + u->memchunk.index, len, &write_type);
pa_memblock_release(u->memchunk.memblock);
if (w <= 0) {
if (errno == EINTR) {
continue;
} else if (errno == EAGAIN) {
/* We may have realtime priority so yield the CPU to ensure that fd can become writable again. */
pa_log_debug("EAGAIN with %llu bytes buffered.", buffered_bytes);
break;
} else {
pa_log("Failed to write data to DSP: %s", pa_cstrerror(errno));
goto fail;
}
} else {
pa_assert(w % u->frame_size == 0);
u->written_bytes += w;
u->memchunk.index += w;
u->memchunk.length -= w;
if (u->memchunk.length <= 0) {
pa_memblock_unref(u->memchunk.memblock);
pa_memchunk_reset(&u->memchunk);
}
}
}
ysleep_interval = pa_bytes_to_usec(buffered_bytes / 2, &u->sink->sample_spec);
xsleep_interval = pa_smoother_translate(u->smoother, xtime0, ysleep_interval);
pa_rtpoll_set_timer_absolute(u->rtpoll, xtime0 + PA_MIN(xsleep_interval, ysleep_interval));
} else
pa_rtpoll_set_timer_disabled(u->rtpoll);
/* 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)) {
pa_memchunk memchunk;
void *p;
ssize_t r;
size_t len;
err = ioctl(u->fd, AUDIO_GETINFO, &info);
pa_assert(err >= 0);
if (info.record.error) {
pa_log_debug("buffer overflow!");
AUDIO_INITINFO(&info);
info.record.error = 0;
if (ioctl(u->fd, AUDIO_SETINFO, &info) < 0)
pa_log("AUDIO_SETINFO: %s", pa_cstrerror(errno));
}
err = ioctl(u->fd, I_NREAD, &len);
pa_assert(err >= 0);
if (len > 0) {
memchunk.memblock = pa_memblock_new(u->core->mempool, len);
pa_assert(memchunk.memblock);
p = pa_memblock_acquire(memchunk.memblock);
r = pa_read(u->fd, p, len, NULL);
pa_memblock_release(memchunk.memblock);
if (r < 0) {
pa_memblock_unref(memchunk.memblock);
if (errno == EAGAIN)
break;
else {
pa_log("Failed to read data from DSP: %s", pa_cstrerror(errno));
goto fail;
}
} else {
u->read_bytes += r;
memchunk.index = 0;
memchunk.length = r;
pa_source_post(u->source, &memchunk);
pa_memblock_unref(memchunk.memblock);
revents &= ~POLLIN;
}
}
}
if (u->rtpoll_item) {
struct pollfd *pollfd;
pa_assert(u->fd >= 0);
pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
pollfd->events = (u->source && PA_SOURCE_IS_OPENED(u->source->thread_info.state)) ? POLLIN : 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:
/* We have to continue processing messages until we receive the
* SHUTDOWN message */
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_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());
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 (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;
for (;;) {
ssize_t l;
void *p;
if (u->memchunk.length <= 0)
pa_sink_render(u->sink, u->block_size, &u->memchunk);
pa_assert(u->memchunk.length > 0);
p = pa_memblock_acquire(u->memchunk.memblock);
l = pa_write(u->fd, (uint8_t*) p + u->memchunk.index, u->memchunk.length, &write_type);
pa_memblock_release(u->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->memchunk.index += (size_t) l;
u->memchunk.length -= (size_t) l;
if (u->memchunk.length <= 0) {
pa_memblock_unref(u->memchunk.memblock);
pa_memchunk_reset(&u->memchunk);
}
pollfd->revents = 0;
if (u->memchunk.length > 0)
/* 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;
#ifdef SIOCOUTQ
{
int l;
if (ioctl(u->fd, SIOCOUTQ, &l) >= 0 && l > 0)
n -= l;
}
#endif
usec = pa_bytes_to_usec((uint64_t) 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 = (short) (PA_SINK_IS_OPENED(u->sink->thread_info.state) ? POLLOUT : 0);
}
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) {
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 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;
unsigned short revents = 0;
int ret;
pa_assert(u);
pa_log_debug("Thread starting up");
if (u->core->high_priority)
pa_make_realtime();
pa_thread_mq_install(&u->thread_mq);
pa_rtpoll_install(u->rtpoll);
for (;;) {
/* Render some data and write it to the dsp */
if (u->sink && PA_SINK_OPENED(u->sink->thread_info.state)) {
audio_info_t info;
int err;
size_t len;
err = ioctl(u->fd, AUDIO_GETINFO, &info);
pa_assert(err >= 0);
/*
* Since we cannot modify the size of the output buffer we fake it
* by not filling it more than u->buffer_size.
*/
len = u->buffer_size;
len -= u->written_bytes - (info.play.samples * u->frame_size);
/* The sample counter can sometimes go backwards :( */
if (len > u->buffer_size)
len = 0;
if (info.play.error) {
pa_log_debug("Solaris buffer underflow!");
clear_underflow(u);
}
len -= len % u->frame_size;
while (len) {
void *p;
ssize_t r;
if (!u->memchunk.length)
pa_sink_render(u->sink, len, &u->memchunk);
pa_assert(u->memchunk.length);
p = pa_memblock_acquire(u->memchunk.memblock);
r = pa_write(u->fd, (uint8_t*) p + u->memchunk.index, u->memchunk.length, NULL);
pa_memblock_release(u->memchunk.memblock);
if (r < 0) {
if (errno == EINTR)
continue;
else if (errno != EAGAIN) {
pa_log("Failed to read data from DSP: %s", pa_cstrerror(errno));
goto fail;
}
} else {
pa_assert(r % u->frame_size == 0);
u->memchunk.index += r;
u->memchunk.length -= r;
if (u->memchunk.length <= 0) {
pa_memblock_unref(u->memchunk.memblock);
pa_memchunk_reset(&u->memchunk);
}
len -= r;
u->written_bytes += r;
}
}
}
/* Try to read some data and pass it on to the source driver */
if (u->source && PA_SOURCE_OPENED(u->source->thread_info.state) && ((revents & POLLIN))) {
pa_memchunk memchunk;
int err;
size_t l;
void *p;
ssize_t r;
audio_info_t info;
err = ioctl(u->fd, AUDIO_GETINFO, &info);
pa_assert(err >= 0);
if (info.record.error) {
pa_log_debug("Solaris buffer overflow!");
clear_overflow(u);
}
err = ioctl(u->fd, I_NREAD, &l);
pa_assert(err >= 0);
if (l > 0) {
/* This is to make sure it fits in the memory pool. Also, a page
should be the most efficient transfer size. */
if (l > u->page_size)
l = u->page_size;
memchunk.memblock = pa_memblock_new(u->core->mempool, l);
pa_assert(memchunk.memblock);
p = pa_memblock_acquire(memchunk.memblock);
r = pa_read(u->fd, p, l, NULL);
pa_memblock_release(memchunk.memblock);
if (r < 0) {
pa_memblock_unref(memchunk.memblock);
if (errno != EAGAIN) {
pa_log("Failed to read data from DSP: %s", pa_cstrerror(errno));
goto fail;
}
} else {
memchunk.index = 0;
memchunk.length = r;
pa_source_post(u->source, &memchunk);
pa_memblock_unref(memchunk.memblock);
u->read_bytes += r;
revents &= ~POLLIN;
}
}
}
if (u->fd >= 0) {
struct pollfd *pollfd;
pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
pollfd->events =
((u->source && PA_SOURCE_OPENED(u->source->thread_info.state)) ? POLLIN : 0);
}
/* Hmm, nothing to do. Let's sleep */
if ((ret = pa_rtpoll_run(u->rtpoll, 1)) < 0)
goto fail;
if (ret == 0)
goto finish;
if (u->fd >= 0) {
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:
/* We have to continue processing messages until we receive the
* SHUTDOWN message */
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");
}
int pa__init(pa_module *m) {
struct userdata *u;
struct stat st;
pa_sample_spec ss;
pa_channel_map map;
pa_modargs *ma;
struct pollfd *pollfd;
pa_source_new_data data;
pa_assert(m);
if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
pa_log("Failed to parse module arguments.");
goto fail;
}
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 format specification or channel map");
goto fail;
}
m->userdata = u = pa_xnew0(struct userdata, 1);
u->core = m->core;
u->module = m;
pa_memchunk_reset(&u->memchunk);
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->filename = pa_runtime_path(pa_modargs_get_value(ma, "file", DEFAULT_FILE_NAME));
if (mkfifo(u->filename, 0666) < 0) {
pa_log("mkfifo('%s'): %s", u->filename, pa_cstrerror(errno));
goto fail;
}
if ((u->fd = pa_open_cloexec(u->filename, O_RDWR, 0)) < 0) {
pa_log("open('%s'): %s", u->filename, pa_cstrerror(errno));
goto fail;
}
pa_make_fd_nonblock(u->fd);
if (fstat(u->fd, &st) < 0) {
pa_log("fstat('%s'): %s", u->filename, pa_cstrerror(errno));
goto fail;
}
if (!S_ISFIFO(st.st_mode)) {
pa_log("'%s' is not a FIFO.", u->filename);
goto fail;
}
pa_source_new_data_init(&data);
data.driver = __FILE__;
data.module = m;
pa_source_new_data_set_name(&data, pa_modargs_get_value(ma, "source_name", DEFAULT_SOURCE_NAME));
pa_proplist_sets(data.proplist, PA_PROP_DEVICE_STRING, u->filename);
pa_proplist_setf(data.proplist, PA_PROP_DEVICE_DESCRIPTION, "Unix FIFO source %s", u->filename);
pa_source_new_data_set_sample_spec(&data, &ss);
pa_source_new_data_set_channel_map(&data, &map);
if (pa_modargs_get_proplist(ma, "source_properties", data.proplist, PA_UPDATE_REPLACE) < 0) {
pa_log("Invalid properties");
pa_source_new_data_done(&data);
goto fail;
}
u->source = pa_source_new(m->core, &data, PA_SOURCE_LATENCY);
pa_source_new_data_done(&data);
if (!u->source) {
pa_log("Failed to create source.");
goto fail;
}
u->source->parent.process_msg = source_process_msg;
u->source->userdata = u;
pa_source_set_asyncmsgq(u->source, u->thread_mq.inq);
pa_source_set_rtpoll(u->source, u->rtpoll);
pa_source_set_fixed_latency(u->source, pa_bytes_to_usec(pa_pipe_buf(u->fd), &u->source->sample_spec));
u->rtpoll_item = pa_rtpoll_item_new(u->rtpoll, PA_RTPOLL_NEVER, 1);
pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
pollfd->fd = u->fd;
pollfd->events = pollfd->revents = 0;
if (!(u->thread = pa_thread_new("pipe-source", thread_func, u))) {
pa_log("Failed to create thread.");
goto fail;
}
pa_source_put(u->source);
pa_modargs_free(ma);
return 0;
fail:
if (ma)
pa_modargs_free(ma);
pa__done(m);
return -1;
}
static void thread_func(void *userdata)
{
struct userdata *u = userdata;
char buf[2048]; // max ring buffer size
pa_assert(u);
pa_log_debug("Thread starting up");
pa_thread_mq_install(&u->thread_mq);
for (;;) {
struct pollfd *play_pollfd;
struct pollfd *rec_pollfd;
int ret;
play_pollfd = pa_rtpoll_item_get_pollfd(u->play_rtpoll_item, NULL);
rec_pollfd = pa_rtpoll_item_get_pollfd(u->rec_rtpoll_item, NULL);
if (play_pollfd->revents & POLLIN) {
if (libvchan_wait(u->play_ctrl) < 0)
goto fail;
play_pollfd->revents = 0;
}
if (rec_pollfd->revents & POLLIN) {
if (libvchan_wait(u->rec_ctrl) < 0)
goto fail;
rec_pollfd->revents = 0;
}
/* 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 (libvchan_buffer_space(u->play_ctrl)) {
if (process_sink_render(u) < 0)
goto fail;
}
}
if (u->source->thread_info.state == PA_SOURCE_RUNNING) {
while (libvchan_data_ready(u->rec_ctrl)) {
if (process_source_data(u) < 0)
goto fail;
}
} else {
/* discard the data */
if (libvchan_data_ready(u->rec_ctrl))
if (libvchan_read(u->rec_ctrl, buf, sizeof(buf)) < 0)
goto fail;
}
/* Hmm, nothing to do. Let's sleep */
play_pollfd->events = POLLIN;
rec_pollfd->events = POLLIN;
#if PA_CHECK_VERSION(6,0,0)
if ((ret = pa_rtpoll_run(u->rtpoll)) < 0)
#else
if ((ret = pa_rtpoll_run(u->rtpoll, true)) < 0)
#endif
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");
}
