This change aligns with iTunes behavior. It also means that a client that is
not long polling can use the revision number (cmsr) value to check for changes.
Also changes relative seeking behavior:
- seeking behind the the current track only switches to the previous
track, if we are not more than 3 seconds into the current track,
otherwise starts current track from the beginning
- seeking beyond the current track will start the next track from the
beginning
Implements Active-Remote, which is sent to the speaker, so it can use this
to tell us who it is when it makes dacp request with a device-volume update.
These commands are not used by Remote, but some Airplay speakers are
able to make them (e.g. my Sony STR-DN1040).
Also prepare being able to set the device volume property.
Some clients aren't really capable of authenticating + some users probably
don't want to enter a password for the web interface. This option allows
clients on for instance the local network to connect without authentication.
Make it easier to add new parameters later, get rid of redundant code, clean
up, align between httpd_xxx modules and introduce new bugs. Yes, the refactor
got a bit out of hand.
For people who want to avoid the web login, or want to get around pairing
problems. This is also added because commit #e59a1a1 means that all
Remotes are now subject to auth, not just those with a user-agent name that
starts with "Remote".
Commit 190e37e was wrong, we can't just update revision number every time, we
should not do it when we are called with 0 or 1 as revision-number. In those
cases we must return the revision number the client should use, which should
either be the current pending (if other clients are waiting) or the number
following what was used last time we were called with > 1 rev num.
Hopefully this fixes Hyperfine issues.
The bug affected Hyperfine Remote, which would not call back with a playstatusupdate
when it got a cmsr which had the same value as the previous (a value of 2)
- Result of operation is garbage or undefined in dacp_reply_cue_play
- Uninitialized argument value in dacp_reply_playqueuecontents
- Uninitialized argument value in queue_fetch_byposrelativetoitem
