Signed-off-by: Diego Biurrun <diego@biurrun.de>

Since all URLContexts have the same AVOptions, such AVOptions
will be applied on the outermost context only and removed from the
dict, while they probably make sense on all contexts.

This makes sure that rw_timeout gets propagated to the innermost
URLContext (to make sure it gets passed to the tcp protocol, when
opening a http connection for instance).

Alternatively, such matching options would be kept in the dict
and only removed after the ffurl_connect call.

Signed-off-by: Martin Storsjö <martin@martin.st>

If set non-zero, this limits duration of the retry_transfer_wrapper()
loop, thus affecting ffurl_read*(), ffurl_write(). As soon as
one single byte is successfully received/transmitted, the timer
restarts.

This has further changes by Michael Niedermayer and Martin Storsjö.

Signed-off-by: Martin Storsjö <martin@martin.st>

This way, the decisions about which protocols are available for use in
any given situations can be delegated to the caller.

Disallow other code to touch it directly, now it's only accessible
through a blacklisting/whitelisting function.

It needs to access the list of protocols directly, so it more properly
belongs there.

Instead of a linked list constructed at av_register_all(), store them
in a constant array of pointers.

Since no registration is necessary now, this removes some global state
from lavf. This will also allow the urlprotocol layer caller to limit
the available protocols in a simple and flexible way in the following
commits.

It is a remnant of the old interrupt callback API.

This was added in 9b07a2dc02 as an ABI hack to allow older
code built with lavf 52 to register protocols even if the size
of the URLProtocol struct was increased. Later, registering
protocols from outside of lavf was removed and this workaround
isn't needed any longer since lavf 53.

This removes an unchecked malloc and a memory leak for the cases
when this workaround actually was used - which it hasn't since
lavf 53.

Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Martin Storsjö <martin@martin.st>

This definition is in two files, since the definitions will move
to the private header at the next bump.

Signed-off-by: Martin Storsjö <martin@martin.st>

The interrupt callback has to be passed in during opening (setting it
after opening isn't enough), since a blocking open couldn't be
interrupted otherwise.

Options are passed down to procotols and also need to be available
during open() in most cases.

Signed-off-by: Anton Khirnov <anton@khirnov.net>

Not used anywhere yet, support for passing options from avio_open() will
follow.

Change all uses of these function to pass the relevant
callback on.

Signed-off-by: Anton Khirnov <anton@khirnov.net>

This is a better io interrupt callback function, which has an
opaque parameter, which is given to the interrupt callback.

This allows callers to precisely cancel IO for one single
AVFormatContext, without interrupt other ones in the same
process.

Note, it's not needed in AVIOContext, at the moment.

Signed-off-by: Anton Khirnov <anton@khirnov.net>

Add missing multiple inclusion guards; clean up #endif comments;
add missing library prefixes; keep guard names consistent.

The new function is more flexible than url_exist(), as it allows to
specify which access flags to check, and does not require an explicit
open of the checked resource.

Signed-off-by: Anton Khirnov <anton@khirnov.net>

There's no particular reason to pollute the namespace with a typedef for
it.

Signed-off-by: Mans Rullgard <mans@mansr.com>

Consistently apply this rule: the guard name is obtained from the
filename by stripping the leading "lib", converting '/' and '.'  to
'_' and uppercasing the resulting name. Guard names in the root
directory have to be prefixed by "FFMPEG_".

Originally committed as revision 15120 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 10765 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 9481 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 9356 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 9345 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8672 to svn://svn.ffmpeg.org/ffmpeg/trunk