Commit graph

70 commits

Author SHA1 Message Date
Junsoo Park
699f2ebb45 dashdemux2: Set timestamp relative to period start
These values will be referred to as timestamp relative to period start
so need to subtract period start time from the values.

Fixes a problem with determining the start position when playing Live content
with SegmentTimeline, presentationTimeOffset and a non-0 period start time.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3025>
2022-09-27 00:00:49 +00:00
Seungha Yang
a9144f5313 adaptivedemux2: Always wake up loop thread on unpause
Otherwise loop thread will sleep forever because
GstAdaptiveDemuxLoop.paused flag update is not signalled
when loop was marked as stopped already from other thread.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3057>
2022-09-21 09:26:22 +00:00
Jan Schmidt
a03f3df626 adaptivedemux2: Rework input download wakeups
Change the way streams are woken up to download more data.

Instead of checking the level on tracks that are being
output as data is dequeued, calculate a 'wakeup time'
at which it should download more data, and wake up
the stream when the global output position crosses
that threshold.

For efficiency, compute the earliest wakeup time
for all streams and store it on the period, so the
output loop can quickly check only a single value
to decide if something needs waking up.

Does the same buffering as the previous method,
but ensures that as we approach the end of
one period, the next period continues incrementally
downloading data so that it is fully buffered when
the period starts.

Fixes issues with multi-period VOD content where
download of the second period resumes only after
the first period is completely drained.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3055>
2022-09-20 19:48:17 +00:00
Edward Hervey
fdfa70997b hlsdemux2: Handle negative time mappings
Some servers can return playlists with "old" media playlists and different
Discont Sequence.

In those cases, the segment stream times would be negative when creating a new
time mapping. In order to properly handle such scenarios, shift the values to
stored accordingly to end up with non-negative reference stream time.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3054>
2022-09-20 14:34:34 +00:00
Edward Hervey
124f93a05d hlsdemux2: Fix crash on live playlist with single entry
If there is a single entry, we would end up computing a minimum distance of 0,
and would therefore read entries from after the segment array

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3024>
2022-09-14 15:14:08 +01:00
Jan Schmidt
e5e72ede26 adaptivedemux2: Always check bitrate in live
When advancing fragment in live, it's normal to return
GST_FLOW_EOS when playing at the live edge of the available
fragments. In that case, we still want to adjust bitrate
dynamically.

Fixes issue with dashdemux2 where the current bitrate of
each adaptation set is changed to the lowest one when
updating the mpd for a live stream.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3020>
2022-09-13 09:02:43 +00:00
Edward Hervey
855dabb578 dashdemux2: Remove bogus limitation checks for duration fields
Just like for the seconds field, there are no limitations on the hours and
minutes fields. The specification for xml schema duration fields doesn't forbid
specifying durations with only (huge) minutes or hours values.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2951>
2022-09-07 12:48:28 +00:00
Jan Schmidt
43209d0ee6 dashdemux2: Preserve current representation on live manifest updates
When updating a manifest during live playback, preserve the current
representation for each stream.

During update_fragment_info, if the current representation changed
because it couldn't be matched, trigger a caps change and new
header download.

This reverts commit e0e1db212f
and reapplies "dashdemux: Fix issue when manifest update sets slow start
without passing necessary header & caps changes downstream" with
changes.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2920>
2022-09-05 16:07:00 +00:00
Jan Alexander Steffens (heftig)
5ae3c9318d adaptivedemux2: Fix download helper with libsoup 3.0.x
libsoup 3.0.x dispatches using a single source attached when the session
is created, so we need to create the session with the same context that
our download thread is later using.

2.74 or 3.1 will dispatch a response using the context which sent the
request. However, for any context other than the one that created the
session, this will also create and destroy sources, so there's still
some slight performance benefit.

Fixes: https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/1384
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2913>
2022-08-18 20:16:18 +00:00
Jan Schmidt
ba8f14e922 adaptivedemux2: Implement send_event() vfunc
Handle select-streams and seek events in an element
level send_event() vfunc, so they can be received
before any source pads are created.

This allows preferred streams to be selected before
segment downloading starts.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2912>
2022-08-18 15:30:05 +01:00
Jan Schmidt
f4f1819416 adaptivedemux2: Fix for period switching in live streams
When playing live, it's possible that one stream reaches
the end of the available playback window and goes to sleep
waiting for a manifest update, and the manifest update
introduces a new period. In that case, the sleeping
stream needs to wake up and go 'properly' EOS before we
can advance the input to the new period.

Accordingly, make sure that a stream's last_ret value
is not marked as EOS if it's just sleeping waiting for a live
manifest update.

Also fix the output loop to go back and re-check if it's
time to switch to the next period after dequeuing and
discarding an EOS event.

https://livesim.dashif.org/livesim/periods_20/testpic_2s/Manifest.mpd

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2895>
2022-08-16 12:39:58 +00:00
Hosang Lee
3cd79c4262 mssdemux2: Use gsturi structure to form fragment urls
Utilize gsturi to form fragment url paths.
A token query may contain the string "manifest" and this would lead
to improper url creations.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2859>
2022-08-16 17:57:19 +09:00
Jan Schmidt
025e446470 hlsdemux2: Fix reference leak of variant stream
When switching back to the previous variant stream
in gst_hls_demux_change_playlist(), fix a couple of
paths that would leak a reference to the previous
variant.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2873>
2022-08-12 13:52:59 +00:00
Jan Schmidt
9db19a3b06 hlsdemux2: Don't leak the datetime in time map structs
Add a function to clean up GstHLSTimeMap structs
and free the ref on the optional associated GDateTime

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2873>
2022-08-12 13:52:59 +00:00
Jan Schmidt
a242428532 hlsdemux2: Fix typefind leak and invalid memory access
When typefinding aggregates incoming data to a pending
typefind buffer and then succeeds in typefinding, it
leaks the aggregated buffer, and leaves the caller
accessing an unreffed buffer.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2873>
2022-08-12 13:52:59 +00:00
Jan Schmidt
a6eb725413 hlsdemux2: m3u8: Fix memory leaks on parsing
Fix memory leaks when parsing of an m3u8 file is
incomplete, with EXTINF or EXT-X-PROGRAM-DATE-TIME
directives, but no segment url.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2873>
2022-08-12 13:52:59 +00:00
Jan Schmidt
0ff317f107 hlsdemux2: m3u8: Fix memory leak
Clear the GValue holding intermediate GstStructure field
data.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2873>
2022-08-12 13:52:59 +00:00
Jan Schmidt
fd64e8c7ed adaptivedemux2: Fix uninitialised memory usage in debug
Fix printing uninitialised memory by clearing the
GstAdaptiveDemuxClock structure when allocating.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2873>
2022-08-12 13:52:59 +00:00
Jan Schmidt
edf84a7119 hlsdemux2: Requeue header buffer when restarting fragment
When returning GST_ADAPTIVE_DEMUX_FLOW_RESTART_FRAGMENT
for the first segment data, we might need to requeue the
header.

This was leading to occasional prerolling stalls on
HLS live streams with renditions.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2849>
2022-08-08 15:52:22 +00:00
Jan Schmidt
91e43048cf hlsdemux2: Fix buffer leak when resynching
Unref the buffer in gst_hls_demux_handle_buffer() when
returning GST_ADAPTIVE_DEMUX_FLOW_LOST_SYNC

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2849>
2022-08-08 15:52:22 +00:00
Jan Schmidt
b7e662f400 adaptivedemux2: Fix a small race on shutdown
Make sure gst_adaptive_demux_loop_cancel_call()
never tries to operate on an invalidated main context. Make
sure to clear the main context pointer while holding the lock,
and to check it in gst_adaptive_demux_loop_cancel_call()

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2847>
2022-08-05 23:36:49 +01:00
Jan Schmidt
d60c2f46e2 adaptivedemux2-stream: Silence a compiler warning
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2839>
2022-08-04 14:49:49 +01:00
Jan Schmidt
1060f72f90 adaptivedemux2: Move internal FLOW_SWITCH return value.
Move the internal-only FLOW_SWITCH custom return value
to GST_FLOW_CUSTOM_SUCCESS+2 to avoid collision with
GST_ADAPTIVE_DEMUX_FLOW_LOST_SYNC

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2839>
2022-08-04 14:49:33 +01:00
Edward Hervey
0857f5af5f adaptivedemux2: Modify custom sync loss flow return
Make it a custom sucess and not an error

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2839>
2022-08-04 14:49:33 +01:00
Edward Hervey
6934362817 hlsdemux2: Always check DSN if required
We don't want to consider the candidate as being before the playlist if the DSN
don't match

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2839>
2022-08-04 14:49:27 +01:00
Edward Hervey
5d0b112c0c adaptivedemux2/hlsdemux2: Handle loss of sync when dowloading.
Media playlist updates and fragment downloads happen in an interleaved
fashion. When a media playlist update fails *while* a segment is being
downloaded, this means we lost synchronization.

Properly propagate and handle this

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2839>
2022-08-04 14:49:27 +01:00
Edward Hervey
6a9bdceb5e hlsdemux2: Fix initial playlist setup.
There is now only a single case where we setup the initial playlist to 0, which
is for the very first variant stream.

Rendition streams will have the initial playlist "synchronized" against the
variant stream media playlist.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2839>
2022-08-04 14:49:27 +01:00
Edward Hervey
9ca1dcd563 hlsdemux2: Handle loss of synchronization in live
Loss of synchronization happens when the updated media playlist has no
relationship to the previous ones. This could happen because of network issues,
server issues, etc...

When this happens, we take no chance and "reset" ourselves so that we can "seek
back to live" against the new updated playlists.

Since this happens at the "media playlist update" level, make sure the custom
flow return is propagated up.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2839>
2022-08-04 14:49:27 +01:00
Edward Hervey
abe5a06421 adaptivedemux2: Handle synchronously to lost sync
We are already in the main scheduler thread, therefore we can do the "seek back
to live" directly. This also avoids other pending actions to take place.

Also handle the loss of sync when doing manifest updates.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2839>
2022-08-04 14:49:27 +01:00
Edward Hervey
1aab9db803 hlsdemux2: Prune time maps when possible
Add a new method to prune unused time mappings (i.e. which aren't used by any
current media playlist).

Do that when doing flushing seeks. Could be used in other places later too.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2839>
2022-08-04 14:49:21 +01:00
Edward Hervey
c20ad629c7 hlsdemux2: Allow DSN mismatches when re-syncing playlists
Some providers provide completely incompatible DSN across bitrates/renditions,
but do keep MSN consistent.

If we fail to synchronize playlist with DSN, retry without the DSN taken into
account.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2839>
2022-08-04 14:49:12 +01:00
Jan Schmidt
da65a7b0ba adaptivedemux2: Fixes for period switching in the output loop
Close some race conditions in switching to the next period,
by ensuring the tracks are completely drained first and by
not outputting EOS events to the output source pad
if there is another period pending.

Fixes Manifest_MultiPeriod_1080p.mpd some more.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2838>
2022-08-04 13:43:57 +01:00
Jan Schmidt
de7e2c9b6b adaptivedemux2: stream: Set period has_next_period flag before EOS
Before sending EOS, update the period's has_next_period
flag and/or create the next period. This closes a race
where the output loop might receive the EOS event
and either push it downstream (causing premature EOS),
or receive it and try and switch to the next period
before that period is completely set up.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2838>
2022-08-04 13:43:51 +01:00
Jan Schmidt
1863082efa adaptivedemux2: period: Rename 'closed' flag to 'has_next_period'
The flag is used to tell the output loop that a
next period is present, since the output loop
can't call the gst_adaptive_demux_has_next_period()
method.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2838>
2022-08-04 13:43:36 +01:00
Jan Schmidt
e89d84a178 adaptivedemux2: Recheck for a pending track on drain
When a track is completely drained and EOS, but
there's a pending track on the slot loop again
to switch to that track.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2838>
2022-08-04 13:43:31 +01:00
Jan Schmidt
f33fe73bb7 adaptivedemux2: Check stream selected instead of state
When combining stream flows, ignore streams that
are not selected, instead of checking whether
the stream state has changed yet.

Fixes another issue with dashdemux2 where it fails to
change to the next period when playing content with
several video, audio and text streams, as with
Manifest_MultiPeriod_1080p.mpd when seeking to 730
just before the end of the first period.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2838>
2022-08-04 13:43:25 +01:00
Jan Schmidt
0af4a53bc2 adaptivedemux2: Ignore stopped stream flow state
When calculating the combined stream flow state
for a period, don't consider stopped streams.

Fixes switching to the next period in DASH streams
with multiple video/audio/subtitle streams.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2684>
2022-06-29 16:35:26 +01:00
Jan Schmidt
a369448b0c adaptivedemux2: Clean up stream parsebins on finalize
Remove the parsebin for a stream from the overall
bin when cleaning up the stream, to avoid
keeping around old ones when moving between periods

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2676>
2022-06-29 14:33:30 +00:00
Jan Schmidt
63d3ba4dfb adaptivedemux2: Fix memory leaks and use-after-free
Fix various small memory leaks, and an invalid
access to GstEvent after giving away the ref
via gst_pad_push_event()

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2676>
2022-06-29 14:33:30 +00:00
Jan Schmidt
4b7622b377 hlsdemux2: Fix potential segfault
Fix a potential segfault if we receive a ISO-FF stream
with moof before moov.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2676>
2022-06-29 14:33:30 +00:00
Jan Schmidt
b2944c36ca hlsdemux2: Fix memory leaks
Clean up various memory leaks

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2676>
2022-06-29 14:33:30 +00:00
Jan Schmidt
76e0333213 hlsdemux2: Free current_segment on finalize
Avoid a memory leak by making sure to release the
current segment on exit if non-NULL

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2676>
2022-06-29 14:33:30 +00:00
Jan Schmidt
61e4f058ef adaptivedemux2: track: Fix buffering time calc before output
Use the lowest track input time as the output
time when calculating track buffering levels
before anything has been dequeued.

Fixes multi-period DASH not advancing to the
next period in some cases.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2650>
2022-06-28 18:34:31 +00:00
Jan Schmidt
16a04f7697 adaptivedemux2: track: Add period number to most debug statements
Store the period number the track belongs to, and
add it in various debug statements

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2650>
2022-06-28 18:34:31 +00:00
Jan Schmidt
e1559d26d0 adaptivedemux2: stream: Don't take TRACKS_LOCK when sending EOS event
The stream tracks list can't change while we're
iterating it from the scheduling thread,
and the event handler immediately takes the
tracks lock, causing a deadlock.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2650>
2022-06-28 18:34:31 +00:00
Edward Hervey
e9f8c7d33a hlsdemux2: Improve media playlist updates
* When dealing with rendition streams, we attempt to synchronize the media
  playlist against the variant stream. This helps with speeding up the correct
  initial fragment search and avoids issues when streams at activated at a much
  later time.
* Also add checks for variant stream existence before attempting to use them

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2679>
2022-06-28 17:59:24 +00:00
Edward Hervey
0a658840da hlsdemux2: Only seek on selected streams
When handling seeks, there is no need to seek on unselected streams. If they
later get activated they will be properly seek onto

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2679>
2022-06-28 17:59:24 +00:00
Edward Hervey
34a7710762 hlsdemux2: Fix debug return statement
Due to latest commits res could have been NULL.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2679>
2022-06-28 17:59:24 +00:00
Edward Hervey
82bd65e711 hlsdemux2: No longer re-add segments from before the playlist
When updating playlists, there is a possibility that the playlists don't
perfectly align, but the last entry of the previous playlist is *just* before
the first entry of the new playlist.

In those cases, we still can transfer the timing information from one playlist
to another, but we do not want to return that segment as being the matching one.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2679>
2022-06-28 17:59:23 +00:00
Edward Hervey
b9effe04e3 hlsdemux2: Use variant stream as support for synchronizing playlists
When matching playlists, there is a possibility that rendition streams will not
have been updated in time (for example because that stream started later, or
playback was paused). This would cause several playback failures and seeking
failures.

In order to still fall back on our feet, attempt to synchronize that rendition
playlist against the current variant playlist. This will attempt to match the
stream time using SN/DNS/PDT/...

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2679>
2022-06-28 17:59:23 +00:00