Commit Graph

20 Commits

Author SHA1 Message Date
Michael Niedermayer
9696740af7 hls: Call avformat_find_stream_info() on the chained demuxers
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>
2013-07-30 12:31:08 +03:00
Martin Storsjö
06205b5efd hls: Free packets when skipping packets when seeking
This fixes memory leaks present since 2b3d041cdc.

Signed-off-by: Martin Storsjö <martin@martin.st>
2013-07-29 20:15:50 +03:00
Martin Storsjö
c441910399 hls: Store all durations in AV_TIME_BASE
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>
2013-07-29 20:15:50 +03:00
Martin Storsjö
e1d5b24476 hls: Store first_timestamp in units of AV_TIME_BASE
When first_timestamp was stored as-is, its actual time base
wasn't known later in the seek function.

Additionally, the logic (from 795d9594cf) 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>
2013-07-29 20:15:50 +03:00
LYF
c110cbf6b5 hls: Create an AVProgram for each variant
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>
2013-07-29 09:50:09 +03:00
Michael Niedermayer
9d64f23629 hls: Respect the different stream time bases when comparing dts
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>
2013-07-29 09:50:08 +03:00
Martin Storsjö
c11e33a3d9 hls: Set stream offset before opening a chained demuxer
This makes sure we don't accidentally check discard flags
for the wrong stream.

Signed-off-by: Martin Storsjö <martin@martin.st>
2013-07-29 09:50:06 +03:00
Michael Niedermayer
cdd2d73d31 hls: Don't check discard flags until the parent demuxer's streams actually exist
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>
2013-07-29 09:50:05 +03:00
Michael Niedermayer
82bf8c8783 hls: Copy the time base from the chained demuxer
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>
2013-07-29 09:50:03 +03:00
Martin Storsjö
eb33ba04e0 hls: Return all packets from a previous variant before moving on to the next one
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>
2013-07-29 09:50:02 +03:00
Reimar Döffinger
efa7f42020 Use the avstring.h locale-independent character type functions
Make sure the behavior does not change with the locale.

Signed-off-by: Martin Storsjö <martin@martin.st>
2013-03-07 15:16:36 +02:00
Diego Biurrun
511cf612ac miscellaneous typo fixes 2012-12-21 00:18:34 +01:00
Diego Biurrun
6774247a9d avformat: Drop pointless "format" from container long names 2012-07-30 13:59:06 +02:00
Martin Storsjö
8ebacfb598 hls: Proceed to the next segment at any error code
Previously, we returned any error code except AVERROR_EOF to the
caller - only if AVERROR_EOF or 0 was returned, we proceeded to
the next segment.

With some setups of web servers, using Connection: close in https
and GnuTLS, we don't get a clean error code at the end of segments.
In those cases, just proceed to the next segment.

Tested-by: Antti Seppälä <a.seppala@gmail.com>
Signed-off-by: Martin Storsjö <martin@martin.st>
2012-07-28 01:21:32 +03:00
Mans Rullgard
896bb0d742 Replace usleep() calls with av_usleep()
This reduces the dependency on unistd.h which is not available
on all systems.

Signed-off-by: Mans Rullgard <mans@mansr.com>
2012-06-22 17:15:36 +01:00
Martin Storsjö
a4f97be1a9 hls: Reset the AVIOContext when seeking
This avoids reading any old data in the AVIOContext buffer after
the seek, and indicates to the mpegts demuxer that we've seeked,
avoiding continuity check errors.

Signed-off-by: Martin Storsjö <martin@martin.st>
2012-02-20 11:10:02 +02:00
Panagiotis H.M. Issaris
2b3d041cdc applehttp: Do seeking within segments, too
Enhance seeking by demuxing until the requested timestamp is
reached within the segment selected by the seek code using the
playlist info.

Some mpegts streams don't have dts set for all packets though,
this seeking method doesn't work well for that case.

Signed-off-by: Martin Storsjö <martin@martin.st>
2012-02-19 23:03:42 +02:00
Alex Converse
c1df37e59b hls: Re-add legacy applehttp name to preserve interface compatibility. 2012-02-14 12:13:46 -08:00
Martin Storsjö
65cd7bf32f hls: Rename the functions and context
Signed-off-by: Martin Storsjö <martin@martin.st>
2012-02-14 20:05:32 +02:00
Martin Storsjö
2772258a98 libavformat: Rename the applehttp demuxer to hls
When this demuxer was created, there didn't seem to be any
consensus of a common short name for this protocol. Now
the consensus seems to be to call it hls.

Signed-off-by: Martin Storsjö <martin@martin.st>
2012-02-14 20:05:31 +02:00