I doubt that anyone ever would try to send a 1 byte packet
via the RTP protocol, but check just in case - it shouldn't
crash at least.
Signed-off-by: Martin Storsjö <martin@martin.st>

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

This seems to have been missed in 636ced8e.
Signed-off-by: Martin Storsjö <martin@martin.st>

AVIOContext has got an av_class member that only gets set if
opening the context using avio_open2, but not if allocating a
custom IO context. A caller that wants to read AVOptions from
an AVIOContext (recursively using AV_OPT_SEARCH_CHILDREN) may
not know if the AVIOContext actually has got a class set or not.
Signed-off-by: Martin Storsjö <martin@martin.st>

Mixing these with the rtp depacketizer functions in rtpdec.h is
no good.
Signed-off-by: Martin Storsjö <martin@martin.st>

This avoids having duplicate code where only the fd parameter
differs.
Signed-off-by: Martin Storsjö <martin@martin.st>

The fdset is a pollfd array nowadays, and it is already populated
at this point.
Signed-off-by: Martin Storsjö <martin@martin.st>

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

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

With the most annoying memory leak found by Derek Buitenhuis.

This allows the chained demuxer (or more precisely, the lavf
utility code) to better fill in timestamps on packets from
these, especially for cases where one stream is a raw ADTS
stream.
Signed-off-by: Martin Storsjö <martin@martin.st>

Add support for domain names, for multiple source addresses,
for exclusions, and for session level specification of addresses.
Signed-off-by: Martin Storsjö <martin@martin.st>

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

This allows us to explicitly fail if the caller tried to set
both inclusions and exclusions at the same time.
Signed-off-by: Martin Storsjö <martin@martin.st>

Previously this only allowed literal IP addresses. When these
are conveyed in a SDP file as in RFC4570, host names are allowed
as well.
Signed-off-by: Martin Storsjö <martin@martin.st>

Also fix some similar typos in comments and documentation.

This fixes memory leaks present since 2b3d041c.
Signed-off-by: Martin Storsjö <martin@martin.st>

Also parse segment durations as floating point, which is allowed
since HLS version 3.
Signed-off-by: Martin Storsjö <martin@martin.st>

Also parse segment durations as floating point, which is allowed
since HLS version 3.

This is based on a patch by Zhang Rui.
Signed-off-by: Martin Storsjö <martin@martin.st>

When first_timestamp was stored as-is, its actual time base
wasn't known later in the seek function.

Additionally, the logic (from 795d9594) for scaling it
based on stream_index is flawed - stream_index in the seek
function only specifies which stream the seek timestamp refers
to, but obviously doesn't say anything about which stream
first_timestamp belongs to.

In the cases where stream_index was >= 0 and all streams had the
same time base, this didn't matter in practice.

Seeking taking first_timestamp into account is problematic
when one variant is mpegts (with real timestamps) and one variant
is raw ADTS (with timestamps only being accumulated packet
duration), where the variants start at totally different timestamps.
Signed-off-by: Martin Storsjö <martin@martin.st>

Bug-Id: 452
Signed-off-by: Diego Biurrun <diego@biurrun.de>

Without the information, an application may choose audio from one
variant and video from another variant, which leads to fetching two
variants from the network. This enables av_find_best_stream() to find
matching audio and video streams, so that only one variant is fetched.
Signed-off-by: Martin Storsjö <martin@martin.st>

Also adjust the streams timestamps according to their start
timestamp when comparing. This helps getting correctly interleaved
packets if one stream lacks timestamps (such as a plain ADTS
stream when the other variants are full mpegts) when the others
have timestamps that don't start from zero.

This probably doesn't work properly if such a stream is
temporarily disabled (via the discard flags) and then reenabled,
and such streams are hard to correctly sync against the other
streams as well - but this works better than before at least.

The segment number restriction makes sure all variants advance
roughly at the same pace as well.
Signed-off-by: Martin Storsjö <martin@martin.st>

This makes sure we don't accidentally check discard flags
for the wrong stream.
Signed-off-by: Martin Storsjö <martin@martin.st>

If passing the end of one segment while initializing the
chained demuxer, the parent demuxer's streams aren't set up
yet, so we can't recheck the discard flags.
Signed-off-by: Martin Storsjö <martin@martin.st>

When a variant stream isn't mpegts but e.g. raw adts, the
default time base (90k) isn't correct.
Signed-off-by: Martin Storsjö <martin@martin.st>

This serves as a safeguard; normally we want to use the dts
comparison to interleave packets from all active variants. If that
dts comparison for some reason doesn't work as intended, make sure
that all packets in all variants for a certain sequence number have
been returned before moving on to the next one.
Signed-off-by: Martin Storsjö <martin@martin.st>

This avoids breaking some slightly incorrect (dts > pts) timestamps
in sample HLS streams from Apple.
Signed-off-by: Martin Storsjö <martin@martin.st>

Incomplete crypted files would lead to a read after buffer boundary
otherwise.

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org

Prevent read after buffer boundary on corrupted tag.

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org

Properly propagate seek errors from avio and the generic pcm seek.

And undo the wrong commit f1cb490d

CC: libav-stable@libav.org