This will allow fixing several bugs with the -shortest option
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Should make the default behaviour safer for careless callers that open
random untrusted files.

Bug-Id: CVE-2016-1897
Bug-Id: CVE-2016-1898

Some (de)muxers open additional files beyond the main IO context.
Currently, they call avio_open() directly, which prevents the caller
from using custom IO for such streams.

This commit adds callbacks to AVFormatContext that default to
avio_open2()/avio_close(), but can be overridden by the caller. All
muxers and demuxers using AVIO are switched to using those callbacks
instead of calling avio_open()/avio_close() directly.

(de)muxers that use the URLProtocol layer directly instead of AVIO
remain unconverted for now. This should be fixed in later commits.

Unbreak build from 7a5902c5.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

This currently works for most users because
avformat_open_input sets it, but this patch fixes any
applications not using that function.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

Don't prefix them ffio_url, which is misleading, sounding too
much like the urlprotocol layer (like ffurl_*).
Signed-off-by: Martin Storsjö <martin@martin.st>

This is not an API change; the fields were explicitly declared private
before.
Signed-off-by: Anton Khirnov <anton@khirnov.net>

When given a stream starting at dts=0, it would previously consider
s->offset as uninitialized and set an offset when the second packet
was written, ending up writing two packets with dts=0. By initializing
this field to AV_NOPTS_VALUE, we make sure that we only initialize it
once, on the first packet.
Signed-off-by: Martin Storsjö <martin@martin.st>

Those streams should never get any packets by definition.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Bradshaw <mbradshaw@sorensonmedia.com>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Bradshaw <mbradshaw@sorensonmedia.com>

Please help setting the category for all remaining AVClasses
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This will allow us to automatically generate manpages for them.

The old constants are more useful to the end user and have
orthogonal meanings to the new ones.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

This is similar to MP4Boxs -inter
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

And fix the error introduced when adding private option to avio.
See 32caa7b1

Deprecate AVFormatContext.mux_rate.

This will allow the caller to enumerate child contexts in a generic way
and since the API is recursive, it also allows for deeper nesting (e.g.
AVFormatContext->AVIOContext->URLContext)

This will also allow the new setting/reading API to transparently apply
to children contexts.

It allows to search for options only with AVClass, without allocating
the corresponding context.

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

Signed-off-by: Zohar Kelrich <lumimies@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Add support for demuxer private options.

This fixes the warning:
libavformat/options.c:62:1: warning: missing braces around initializer [-Wmissing-braces]

Instead of -fflags rtphint, set -movflags rtphint instead.
Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

AVClass is already initialized in  avformat_get_context_defaults.