Commit graph

63 commits

Author SHA1 Message Date
Edward Hervey
3d500636a9 adaptivedemux2: Don't use g_str_equal on potentially NULL strings
It is only meant to be used as a callback. The fallback macro uses strcmp which
doesn't handle NULL strings gracefully. Instead use g_strcmp0

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6392>
2024-03-19 13:25:41 +00:00
Edward Hervey
ab11c20d59 hlsdemux2: Avoid NULL pointer usage
The pending/current variant are both NULL when the demuxer is resetted.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6392>
2024-03-19 13:25:41 +00:00
Ruben Gonzalez
059965fe53 doc: Fix newline char between authors
Found running `gst-inspect-1.0 -a |& grep -v ":" | grep @`

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4682>
2023-05-20 05:48:23 +00:00
Rafał Dzięgiel
38028c9873 hlsdemux2: Make start-bitrate property work without connection-speed
Makes "start-bitrate" work without setting "connection-speed" property. Having
another property set as a requirement for this one to work is unexpected.

This commit allows to request some initial bitrate for first segment, then
go into adaptive streaming for the rest of media playback.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3895>
2023-02-17 17:48:40 +01:00
Edward Hervey
0639f117cb hlsdemux2: Remove enable-llhls property
This was only used for testing purposes

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3883>
2023-02-03 16:52:24 +00:00
Edward Hervey
eb1eb64506 hlsdemux2: Make sure simple media playlist is properly primed
By setting/propagating stream time initially

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3883>
2023-02-03 16:52:23 +00:00
Jan Schmidt
3d0e8aa07e adaptivedemux2: Fix manifest access during seeking query
Avoid a deadlock if a downstream seeking query happens while the scheduler
thread is holding the manifest lock (for example during a seek back to live).

Instead, do a more elaborate fix where the external calls that need access to a
'manifest' access a copy that's updated during a manually triggered manifest
update callback.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3883>
2023-02-03 16:52:23 +00:00
Jan Schmidt
6d7d3d93e6 hlsdemux2: Re-add support for fallback variant URLs
fallback variant URLs get accumulated into a list in the variant now. If there's
one available, switch to it after a variant update failure (failure to load the
variant 3 times)

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3883>
2023-02-03 16:52:23 +00:00
Jan Schmidt
d5b8929315 hlsdemux2: Demote log message
Don't complain loudly about replacing the current pending playlist, just log it
at debug level

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3883>
2023-02-03 16:52:23 +00:00
Jan Schmidt
2b93dae59a hlsdemux2: Handle async playlist loading failures
Add failed variant playlists to a list and failover to other variants until
there is none left

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3883>
2023-02-03 16:52:23 +00:00
Jan Schmidt
454779f094 hlsdemux2: Wait for playlist switch during seek.
When switching to/from an iframe variant to do seeking, wait for the target
playlist to load before handling the seek.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3883>
2023-02-03 16:52:23 +00:00
Jan Schmidt
9ae3978c72 hlsdemuxdemux2: Consider the hold-back when calculating seek range
When calculating the seek range for a live stream, use the same hold-back logic
as when choosing a starting segment, including low-latency segments if
enabled. Permits seeking closer to the live edge when re-synching or catching
up.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3883>
2023-02-03 16:52:23 +00:00
Jan Schmidt
083538df9e hlsdemux2: Continue reworking code for async playlist updates
Everything is working again now except for corner cases:
  - Failing over to another playlist after a load failure
  - Remembering playlist redirects and using that URI
    directly next time.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3883>
2023-02-03 16:52:23 +00:00
Jan Schmidt
7b3a1bac0a hlsdemux2: Add llhls-enabled property to streams
Tidying: Make the llhls-enabled setting configurable through a stream property
instead of set manually after construction.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3883>
2023-02-03 16:52:23 +00:00
Jan Schmidt
d5edd48f13 hlsdemux2: Add gst_hls_demux_stream_set_playlist_uri
Add a method that configures the new playlist URI for a stream.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3883>
2023-02-03 16:52:23 +00:00
Jan Schmidt
268a25b979 hlsdemux2: Use partial segment for playlist update interval
When playing LL-HLS playlists in LL-HLS mode, update the playlist more often (on
the partial segment interval) or else we end up downloading them in bursts and
playing further from the live edge than intended.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3883>
2023-02-03 16:52:22 +00:00
Jan Schmidt
42b0dd8c41 hlsdemux2: Split the stream object out
Move the stream object to a separate file to split the demux level behaviour
from the stream behaviour better.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3883>
2023-02-03 16:52:22 +00:00
Jan Schmidt
5baf5f4b1e hlsdemux2: Add a timestamp to the playlist
Store the timestamp for this playlist. If valid it represents the monotonic time
at which the data was retrieved, minus any proxy cache Age field.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3883>
2023-02-03 16:52:22 +00:00
Jan Schmidt
9edb2f6690 hlsdemux2: In live, match buffering to the hold back distance
When playing a live stream, make the recommended buffering threshold at most the
hold-back distance from live. If we start 3 seconds from the live edge, there's
no point trying to buffer more - we'll just hit the live edge and have to wait
for more data to be available anyway.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3883>
2023-02-03 16:52:22 +00:00
Jan Schmidt
1e6550f623 hlsdemux2: Resync stream time on partial segment boundaries
When resyncing stream times in a playlist, support at any partial segment
position, not just at full segment boundaries.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3883>
2023-02-03 16:52:22 +00:00
Jan Schmidt
cbb9cfe987 hlsdemux2: Cancel preload before fetching something else
When submitting a request for fragment or header that doesn't match any preload,
make sure there's not an ongoing preload for that data type, to avoid parallel
downloads using up bandwidth.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3883>
2023-02-03 16:52:22 +00:00
Jan Schmidt
44107d0c4b hlsdemux2: Implement the stream submit_request() vfunc
Implement the submit_request() vfunc for streams and fulfil requests from the
preload hint data if possible.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3883>
2023-02-03 16:52:22 +00:00
Jan Schmidt
cb27c05ca7 hlsdemux2: Add preloader helper.
Add a helper that submits and handles blocking preload requests for future
PART/MAP data from live playlists. Add handling in the hlsdemux stream to submit
preload requests when hitting the end of the available segments in a live
playlist.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3883>
2023-02-03 16:52:22 +00:00
Jan Schmidt
61516eadf6 hlsdemux2: Ignore partial segments when not live
Add some checks that LL-HLS support is enabled and that the current playlist is
live before proceeding to play any partial segments.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3883>
2023-02-03 16:52:22 +00:00
Jan Schmidt
401ca3ef44 hlsdemux2: Print playlist age in debug output
Store the timestamp when playlists are updated, and add some debug output to the
update_fragment_info that estimates how far from the live edge the fragment
currently is

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3883>
2023-02-03 16:52:22 +00:00
Jan Schmidt
43e042c4b7 hlsdemux2: Implement LL-HLS flag and part-hold-back/hold-back in live.
Add a flag to hlsdemux to enable or disable LL-HLS handling.

When LL-HLS is enabled and an LL-HLS playlist is loaded, use the part-hold-back
threshold to choose a starting segment.

For live streams that aren't LL-HLS, use the provided hold-back attribute, or
fall back to landing 3 segments from the end.

Make the gst_hls_media_playlist_seek() method able to choose a partial segment
within 2 target durations of the end of the playlist when requested.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3883>
2023-02-03 16:52:22 +00:00
Jan Schmidt
676fffd23c hlsdemux2: Fix segment advance on partial segments.
Fix the duration passed to gst_adaptive_demux2_stream_advance_fragment() when
advancing from a partial segment.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3883>
2023-02-03 16:52:21 +00:00
Jan Schmidt
e318bc3df5 hlsdemux2: Improve some debug output
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3883>
2023-02-03 16:52:21 +00:00
Jan Schmidt
3537614c2b hlsdemux2: Add and use gst_hls_media_playlist_find_position()
Add a function for synchronising current position with the contents of a
playlist that is specifically for that and can handle synchronising to a partial
segment.

gst_hls_media_playlist_seek() will be used only when performing external seek
requests, to find the best segment or partial segment at which to resume
playback.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3883>
2023-02-03 16:52:21 +00:00
Jan Schmidt
857541ae07 hlsdemux2: Fix some m3u8 segment leaks
Make sure unref m3u8 segments in some missed paths.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3883>
2023-02-03 16:52:21 +00:00
Jan Schmidt
7b9547a119 hlsdemux2: Allow starting at the partial_only segment
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3883>
2023-02-03 16:52:21 +00:00
Jan Schmidt
2c82fdf276 hlsdemux2: Use gst_hls_media_playlist_recalculate_stream_time()
Instead of recalculating stream times manually in a playlist, let the playlist
do it, so that it fixes up partial segment stream times too.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3883>
2023-02-03 16:52:21 +00:00
Jan Schmidt
d76aacfb82 hlsdemux2: LL-HLS improvements
Fixes for stream_time recalculation and handling in partial segments.

Disallow bitrate switching when in the middle of partial segments - only at a
full segment (or right before the first partial segment of a segment).

It's possible but more difficult to switch bitrates in the middle of a partial
segment group, since they are less likely to have aligned keyframes. In any
case, the seek code can't do that right now.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3883>
2023-02-03 16:52:21 +00:00
Jan Schmidt
b6abe94890 hlsdemux2: Continue implementing LL-HLS support
Somewhat working support for proceeding into the partial segments appearing at
the live edge of the playlist.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3883>
2023-02-03 16:52:21 +00:00
Jan Schmidt
92e849070f hlsdemux2: Mark locations where partial segments need handling
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3883>
2023-02-03 16:52:21 +00:00
Jan Schmidt
cfc62a69f7 hlsdemux2: Start adding partial_segment handling
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3883>
2023-02-03 16:52:21 +00:00
Jan Schmidt
023c67e166 hlsdemux: Consider starting stream time in presentation offset
When calculating the presentation offset for CMAF input in live
playback, subtract the stream_time of the fragment from the
calculated presentation offset, so that the first fragment
is played at running time zero.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3680>
2023-01-05 07:08:16 +00:00
Enrique Ocaña González
aafe07a802 hlsdemux2: Expose EXT-X-PROGRAM-DATE-TIME as tags.
This allows an application to use timestamps associated
with fragments.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1417>
2022-11-17 22:11:12 +00:00
Jan Schmidt
565f47b4f3 adaptivedemux2: Move stream_seek() to the Stream class
Move the last stream specific vfunc from the demux
class to the stream class.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3314>
2022-11-05 04:00:31 +11:00
Jan Schmidt
2fe641353d adaptivedemux2: Refactor stream methods into the stream
Unlike the legacy elements, GstAdaptiveDemuxStream is a GObject now,
so a bunch of things that were actually stream methods on the
parent demux object can directly become stream methods now.

Move the stream class out to a header of its own.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3314>
2022-11-05 04:00:31 +11:00
Jan Schmidt
6af3769511 hlsdemux2: Download new header when it changes
Check whether the init file / MAP data for a segment
is different to the current data and trigger an
update if so. Previously, the header would only
be checked in HLS after switching bitrate or
after a seek / first download.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3307>
2022-11-01 11:53:26 +00:00
Edward Hervey
33db765f45 adaptivedemux2: Improve minimum buffering threshold
Previously the minimum buffering threshold was hardcoded to a specific
value (10s). This is suboptimal this an actual value will depend on the actual
stream being played.

This commit sets the low watermark threshold in time to 0, which is an automatic
mode. Subclasses can provide a stream `recommended_buffering_threshold` when
update_stream_info() is called.

Currently implemented for HLS, where we recommended 1.5 average segment
duration. This will result in buffering being at 100% when the 2nd segment has
been downloaded (minus a bit already being consumed downstream)

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3240>
2022-10-31 16:16:50 +01:00
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
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
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
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