The duration of a song can have fractions of seconds
(quote from http://www.upnp.org/schemas/av/didl-lite-v2.xsd):
The format of the duration string is:
H+:MM:SS[.F+], or H+:MM:SS[.F0/F1]
Where:
+H one or more digits to indicate elapsed hours,
MM exactly 2 digits to indicate minutes (00 to 59),
SS exactly 2 digits to indicate seconds (00 to 59),
F+ any number of digits (including no digits) to indicate fractions of seconds,
F0/F1 a fraction, with F0 and F1 at least one digit long,
and F0 < F1.
The string may be preceded by an optional + or - sign, and the
decimal point itself may be omitted if there are no fractional seconds digits.
Until now, a duration with fractions of seconds could not be parsed and
resulted in an unknown duration. Only durations in the format "H+:MM:SS"
were feasible. This commit enables to read durations in the first format,
i.e. "H+:MM:SS[.F+]"
Allows constructing the request first and set the URL later. This is
needed because curl_easy_escape() is needed to construct the URL,
which however needs the CURL "easy" handle created by the Request class.
This is another instance of the kludge we already have a few lines
above that. It works around a deadlock/race condition revealed by
commit 98a7c62d7a4f716d90af6d78e18d1a3b10bc54b3
The IcyMetaDataParser cannot be initialized already in OnHeaders(),
because it will be initialized late in that method; and there will not
be another OnHeaders() call, because streams with Icy metadata are not
seekable, thus there will not be another HTTP request.
This attribute shall be used only for IsInside() to make this safe
against a race condition described in #188:
> There is no requirement on the implementation that the ID of the
> created thread be available before the newly created thread starts
> executing.
http://pubs.opengroup.org/onlinepubs/009695399/functions/pthread_create.html):
This means that on some pthread implementations (e.g. Haiku), the
assert(thread.IsInside()) could fail.
Closes#188
Use the "==" operator instead of pthread_equal().
This allows us to eliminate two boolean flags which are there to avoid
race conditions, and made the thing so fragile that I got tons of
(correct) thread sanitizer warnings.
