pretending to play while we wait for the connection to timeout.  This
removes the need for timers, and thus removes the now unnecessary
timer_get_runtime_* function(s) from the timer code.

The changes made compared to the pre-patch shout plugin are:
* Block while connecting, timing out after 2 seconds.
* Close the device, and not just the connection, if play returns -1.
* Remove sd->last_err (it's always assigned before use).
* Some minor cleanups.

git-svn-id: https://svn.musicpd.org/mpd/trunk@6555 09075e82-0dd4-0310-85a5-a0d7c8717e4f

outputs, which is actually desired behaviour.  This way if the shout server
takes a while to respond, the shout output can block until connected
without messing up other audio outputs.

git-svn-id: https://svn.musicpd.org/mpd/trunk@6554 09075e82-0dd4-0310-85a5-a0d7c8717e4f

reducing the likelyhood of it blocking other outputs.

git-svn-id: https://svn.musicpd.org/mpd/trunk@6543 09075e82-0dd4-0310-85a5-a0d7c8717e4f

leave it in that state.  Likewise, if an audio output is in state
DEVICE_ON, and reopening the device due to a format change fails, change it
to state DEVICE_ENABLE.  This will prevent flushAudioBuffer from even
attempting to play audio on a closed device (even though it would fail
anyway).

git-svn-id: https://svn.musicpd.org/mpd/trunk@6529 09075e82-0dd4-0310-85a5-a0d7c8717e4f

git-svn-id: https://svn.musicpd.org/mpd/trunk@6527 09075e82-0dd4-0310-85a5-a0d7c8717e4f

top depending on !quit, which doesn't set it anywhere before the if (quit)
block is reached, and the inner one which doesn't set quit at all.  Since
it's a local variable and can't be modified externally, it'll never be hit.

git-svn-id: https://svn.musicpd.org/mpd/trunk@6524 09075e82-0dd4-0310-85a5-a0d7c8717e4f

This should resolve some of the timing issues experienced after switching from blocking to non-blocking shout api
* Wait ten seconds before declearing the shout server unreachable
* Fix a state where it would never attempt to connect if it had previously failed

It isn't perfect yet, but I'd like some testing on it from other setups


git-svn-id: https://svn.musicpd.org/mpd/trunk@6523 09075e82-0dd4-0310-85a5-a0d7c8717e4f

git-svn-id: https://svn.musicpd.org/mpd/trunk@6522 09075e82-0dd4-0310-85a5-a0d7c8717e4f

git-svn-id: https://svn.musicpd.org/mpd/trunk@6521 09075e82-0dd4-0310-85a5-a0d7c8717e4f

header.

git-svn-id: https://svn.musicpd.org/mpd/trunk@6520 09075e82-0dd4-0310-85a5-a0d7c8717e4f

git-svn-id: https://svn.musicpd.org/mpd/trunk@6519 09075e82-0dd4-0310-85a5-a0d7c8717e4f

state (when users press stop, previous snd_pcm_drop(), then
snd_pcm_drain() was called.  this would lockup dmix)


git-svn-id: https://svn.musicpd.org/mpd/trunk@6517 09075e82-0dd4-0310-85a5-a0d7c8717e4f

git-svn-id: https://svn.musicpd.org/mpd/trunk@6503 09075e82-0dd4-0310-85a5-a0d7c8717e4f

wait for it to complete an action which it never will.

git-svn-id: https://svn.musicpd.org/mpd/trunk@6488 09075e82-0dd4-0310-85a5-a0d7c8717e4f

git-svn-id: https://svn.musicpd.org/mpd/trunk@6487 09075e82-0dd4-0310-85a5-a0d7c8717e4f

SIGSTOP.

git-svn-id: https://svn.musicpd.org/mpd/trunk@6486 09075e82-0dd4-0310-85a5-a0d7c8717e4f

completely stopped.  Instead, send them SIGSTOP to pause the process until
they're needed again.  Then send them SIGCONT instead of re-spawning them.

git-svn-id: https://svn.musicpd.org/mpd/trunk@6485 09075e82-0dd4-0310-85a5-a0d7c8717e4f

git-svn-id: https://svn.musicpd.org/mpd/trunk@6483 09075e82-0dd4-0310-85a5-a0d7c8717e4f

some versions of shoutcast send "content-type" in all lowercase, and I
don't trust other servers to get the case right for the rest of the headers
we look for.

git-svn-id: https://svn.musicpd.org/mpd/trunk@6482 09075e82-0dd4-0310-85a5-a0d7c8717e4f

have any effect until the aac and mp4 input plugins actually support a
stream decoding API.

git-svn-id: https://svn.musicpd.org/mpd/trunk@6481 09075e82-0dd4-0310-85a5-a0d7c8717e4f

git-svn-id: https://svn.musicpd.org/mpd/trunk@6480 09075e82-0dd4-0310-85a5-a0d7c8717e4f

git-svn-id: https://svn.musicpd.org/mpd/trunk@6479 09075e82-0dd4-0310-85a5-a0d7c8717e4f

been redirected.  This prevents zeroconf from blocking daemonization, and
makes sure any errors get sent to the logs and not stdout.

git-svn-id: https://svn.musicpd.org/mpd/trunk@6477 09075e82-0dd4-0310-85a5-a0d7c8717e4f

mpdconf.example, and updating the zeroconf_* docs.

git-svn-id: https://svn.musicpd.org/mpd/trunk@6474 09075e82-0dd4-0310-85a5-a0d7c8717e4f

header.  While this is odd for an HTTP header, it's actually quite common
for streaming clients to send it without a space.  Some clients do send
with a space as well, but without one has always worked fine and may in
fact be more compatible.

git-svn-id: https://svn.musicpd.org/mpd/trunk@6472 09075e82-0dd4-0310-85a5-a0d7c8717e4f

silence a warning about an unused variable without using stupid checks for
HAVE_AVAHI || HAVE_BONJOUR.

git-svn-id: https://svn.musicpd.org/mpd/trunk@6471 09075e82-0dd4-0310-85a5-a0d7c8717e4f

git-svn-id: https://svn.musicpd.org/mpd/trunk@6470 09075e82-0dd4-0310-85a5-a0d7c8717e4f

git-svn-id: https://svn.musicpd.org/mpd/trunk@6469 09075e82-0dd4-0310-85a5-a0d7c8717e4f

git-svn-id: https://svn.musicpd.org/mpd/trunk@6468 09075e82-0dd4-0310-85a5-a0d7c8717e4f

git-svn-id: https://svn.musicpd.org/mpd/trunk@6467 09075e82-0dd4-0310-85a5-a0d7c8717e4f

git-svn-id: https://svn.musicpd.org/mpd/trunk@6464 09075e82-0dd4-0310-85a5-a0d7c8717e4f

git-svn-id: https://svn.musicpd.org/mpd/trunk@6463 09075e82-0dd4-0310-85a5-a0d7c8717e4f

git-svn-id: https://svn.musicpd.org/mpd/trunk@6462 09075e82-0dd4-0310-85a5-a0d7c8717e4f

git-svn-id: https://svn.musicpd.org/mpd/trunk@6461 09075e82-0dd4-0310-85a5-a0d7c8717e4f

I couldn't test mDNSResponder support on Linux, as Debian doesn't include it - but should work as well.

git-svn-id: https://svn.musicpd.org/mpd/trunk@6453 09075e82-0dd4-0310-85a5-a0d7c8717e4f

git-svn-id: https://svn.musicpd.org/mpd/trunk@6452 09075e82-0dd4-0310-85a5-a0d7c8717e4f

checks that are now used.

git-svn-id: https://svn.musicpd.org/mpd/trunk@6447 09075e82-0dd4-0310-85a5-a0d7c8717e4f

playback is stopped completely.  This means the player process will no
longer have to wake up 100 times per second to see if it's been told to
start playing (the main process will just spawn a new player process when
it needs to).  On the downside, this means an extra pair of forks() and the
re-initializing of the player and decode processes each time playback is
restarted.

git-svn-id: https://svn.musicpd.org/mpd/trunk@6446 09075e82-0dd4-0310-85a5-a0d7c8717e4f

git-svn-id: https://svn.musicpd.org/mpd/trunk@6445 09075e82-0dd4-0310-85a5-a0d7c8717e4f

git-svn-id: https://svn.musicpd.org/mpd/trunk@6444 09075e82-0dd4-0310-85a5-a0d7c8717e4f