Commit graph

210 commits

Author SHA1 Message Date
Mathieu Duponchelle
bd70c73a8a dashdemux: implement get_presentation_offset.
To account for presentationTimeOffset as per section 7.2.1 .

https://bugzilla.gnome.org/show_bug.cgi?id=745455
2015-03-10 15:17:37 +01:00
Thiago Santos
81b555838a dashdemux: protect against malformed isombff format
Be more careful around malformed mpds that announce using
isombff profile but actually are regular mpds
2015-02-18 08:19:59 -03:00
Thiago Santos
a48a361256 dashdemux: depracate bandwidth-usage in favor of bitrate-limit
Bitrate-limit is already available in the baseclass and, even though
the bandwidth-usage name is better, hls and mss already used
bitrate-limit. This patch deprecates the bandwidth-usage and maps
it to the baseclass bitrate-limite.
2015-02-17 11:12:42 -03:00
Mathieu Duponchelle
7ca6d9634a dashdemux: Fix handling of live streams with timeshift buffers.
By implementing get_live_seek_range.

As shown by :

gst-validate-1.0 playbin \
uri=http://dev-iplatforms.kw.bbc.co.uk/dash/news24-avc3/news24.php

This patch handles live seeking, by setting a live seek range
comprised between now - timeShiftBufferDepth and now.

The inteersting thing with this stream is that one can actually
ask fragments up to availabilityStartTime, but it seems quite clear
in the spec that content is only guaranteed to exist up to
timeShiftBufferDepth.

One can test live seeking this way :

gst-validate-1.0 playbin \
uri=http://dev-iplatforms.kw.bbc.co.uk/dash/news24-avc3/news24.php \
--set-scenario seek_back.scenario

with scenario being:

description, seek=true
seek, playback-time=position+5.0, start="position-600.0",
flags=accurate+flush

This example will play the stream, wait for five seconds, then seek back
to a position 10 minutes earlier.

https://bugzilla.gnome.org/show_bug.cgi?id=744362
2015-02-12 22:47:26 +01:00
Thiago Santos
85bb450a44 dashdemux: use audio_%02u and video_%02u names for pads
Instead of using the default ghostpad%u naming. The audio_/video_
names are more common in demuxers
2015-01-26 18:03:40 -03:00
Thiago Santos
229a15b393 adaptivedemux: refactor chunk downloading flow
Add more power to the chunk_received function (renamed to data_received)
and also to the fragment_finish function.

The data_received function must parse/decrypt the data if necessary and
also push it using the new push_buffer function that is exposed now. The
default implementation gets data from the stream adapter (all available)
and pushes it.

The fragment_finish function must also advance the fragment. The default
implementation only advances the fragment.

This allows the subsegment handling in dashdemux to continuously download
the same file from the server instead of stopping at every subsegment
boundary and starting a new request
2015-01-19 15:30:04 -03:00
Sebastian Dröge
cd3930969a dashdemux: Fix compiler warning with clang
gstdashdemux.c:1330:13: error: implicit conversion from enumeration type 'enum _GstAdaptiveDemuxFlowReturn' to different enumeration type
      'GstFlowReturn' [-Werror,-Wenum-conversion]
      ret = GST_ADAPTIVE_DEMUX_FLOW_SUBSEGMENT_END;
          ~ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2015-01-19 11:23:52 +01:00
Thiago Santos
fb760a563c dashdemux: remove unused segment attribute
It was never used, only initialized
2015-01-16 17:07:22 -03:00
Thiago Santos
3055bb331a dashdemux: implement ISOBMFF profile handling
The ISOBMFF profile allows definind subsegments in a segment. At those
subsegment boundaries the client can switch from one representation to
another as they have aligned indexes.

To handle those the 'sidx' index is parsed from the stream and the
entries point to pts/offset of the samples in the stream. Knowing that
the entries are aligned in the different representation allows the client
to switch mid fragment. In this profile a single fragment is used per
representation and the subsegments are contained in this fragment.

To notify the superclass about the subsegment boundary the chunk_received
function returns a special flow return that indicates that. In this case,
the super class will check if a more suitable bitrate is available and will
change to the same subsegment in this new representation.

It also requires special handling of the position in the stream as the
fragment advancing is now done by incrementing the index of the subsegment.
It will only advance to the next fragment once all subsegments have been
downloaded.

https://bugzilla.gnome.org/show_bug.cgi?id=741248
2015-01-16 17:07:05 -03:00
Thiago Santos
f5b98f24c2 dashdemux: parse the sidx index from isobmff streams
Allows dashdemux to identify the subsegments in the stream and
switch bitrates when needed
2015-01-16 15:00:11 -03:00
David Waring
b03acbf584 dashdemux: Find current segment in the streams that have just been setup
Using demux->streams will just skip the whole loop as demux->streams will
always be NULL at that point

https://bugzilla.gnome.org/show_bug.cgi?id=741285
2014-12-09 21:08:10 -03:00
Thiago Santos
f48fa7e763 dashdemux: fix double unref of object
the datetime is already released by the end of the function
2014-12-02 15:52:54 -03:00
David Waring
95c3fdc193 dashdemux: Find the current period in a live stream
Start from the correct period on a live stream

https://bugzilla.gnome.org/show_bug.cgi?id=737421
2014-12-02 14:22:09 -03:00
David Waring
306ca0cdf6 dashdemux: Fix period selection for live streams
Fix period selection and properly error out when update cannot be done

https://bugzilla.gnome.org/show_bug.cgi?id=725298
2014-12-02 13:24:52 -03:00
Thiago Santos
f04d351cd9 dashdemux: replace the streams with the new mpd client's streams
Otherwise it won't update with the new segment info from the playlist
update
2014-11-30 21:56:25 -03:00
Thiago Santos
28d66ea589 dashdemux: when updating the manifest, set the uri
This will allow dashdemux to create the correct full path URIs to
continue downloading fragments
2014-11-30 21:56:25 -03:00
Thiago Santos
58a1b0d058 dashdemux: port to adaptive demux 2014-11-30 21:56:25 -03:00
Matthieu Bouron
1d733eacf7 dashdemux: do not override last known stream error
https://bugzilla.gnome.org/show_bug.cgi?id=736141
2014-11-07 19:52:00 -03:00
Thiago Santos
39ba21619e dashdemux: make sure flushes have the same seqnum as the seek event
They are part of the same operation and should preserve the seqnum
2014-11-07 19:16:47 -03:00
Thiago Santos
e60bdc553c dashdemux: simplify seek to eos handling
Remove redundant flush stop pushing and remove a goto to make
the code flow simpler
2014-11-07 19:09:15 -03:00
Matthieu Bouron
5ae991095d dashdemux: send missing FLUSH_STOP/EOS when no seeking period is found
https://bugzilla.gnome.org/show_bug.cgi?id=736800
2014-11-07 19:02:02 -03:00
Tim-Philipp Müller
f216b7bb11 Sprinkle some G_PARAM_DEPRECATED and #ifndef GST_REMOVE_DEPRECATED 2014-11-02 17:19:34 +00:00
David Waring
29f1f4533e dash: Use GstUri to join URIs 2014-09-29 12:22:19 +03:00
Matthieu Bouron
22c7559152 dashdemux: mark first buffer as discont after restarting a download task
Mark first buffer as discont after restarting a download task, so
downstream can reset its state to properly handle the new fragment.

Related issue: https://bugzilla.gnome.org/show_bug.cgi?id=736318

https://bugzilla.gnome.org/show_bug.cgi?id=736319
2014-09-24 13:30:20 -03:00
Thiago Santos
2273c15f15 dashdemux: push a time segment when restarting streaming
This should inform demuxers/decoders downstream that the stream is
about to start from a new position and they should flush accordingly

https://bugzilla.gnome.org/show_bug.cgi?id=736319
2014-09-24 12:35:37 -03:00
George Kiagiadakis
55032ae5fe dashdemux: synchronize with the download loop thread to signal it to continue
If EOS or ERROR happens before the download loop thread has reached its
g_cond_wait() call, then the g_cond_signal doesn't have any effect and
the download loop thread stucks later.

https://bugzilla.gnome.org/show_bug.cgi?id=735663
2014-09-18 13:38:25 -03:00
Thiago Santos
24c99712a8 dashdemux: fix clearing of eos state in pads
The internal pad still keeps its EOS flag and event as it can be assigned
after the flush-start/stop pair is sent. The EOS is assigned from the streaming
thread so this is racy.

To be sure to clear it, it has to be done after setting the source to READY to
be sure that its streaming thread isn't running.

https://bugzilla.gnome.org/show_bug.cgi?id=736012
2014-09-18 12:14:30 -03:00
Sebastian Dröge
1ce7d89868 dash: Actually retry 3 times as advertised instead of 2 2014-09-15 11:59:49 +03:00
Matthieu Bouron
4ed7c7919a dashdemux: improve position detection when a download restart
Query other src pads before falling back to the position of the last
known pushed segment (which can be far ahead in time).

https://bugzilla.gnome.org/show_bug.cgi?id=736421
2014-09-11 18:25:19 -03:00
Sebastian Dröge
51a9e13bf2 dashdemux: Don't send flush events to deactivated pads
https://bugzilla.gnome.org/show_bug.cgi?id=736012
2014-09-04 18:21:25 +03:00
Tim-Philipp Müller
334a71506c dashdemux: fix abort in error code path with newer glib
Don't forget to unlock mpd client again when erroring out.
Fixes abort when g_mutex_clear() is called on a locked mutex.
2014-08-21 16:25:55 +01:00
Thiago Santos
1cabb3b5a5 dashdemux: unref pad reference when removing internal source in error
Avoids leaking the pad in error situations
2014-08-19 17:17:33 -03:00
Thiago Santos
4afa05e567 dashdemux: read language from ContentComponent node as a fallback
If the language is not specified in the AdaptationSet, use the ContentComponent
node to get it. We only get it if there is only a single ContentComponent as
it doesn't seem clear on what to do if there are multiple entries

https://bugzilla.gnome.org/show_bug.cgi?id=732237
2014-08-19 16:02:52 -03:00
Matthieu Bouron
82fdb3aefc dashdemux: push language code tag
Language code tag is retrieved from the AdaptationSet language
property.

https://bugzilla.gnome.org/show_bug.cgi?id=732237
2014-08-19 15:34:01 -03:00
George Kiagiadakis
ea90ceac01 dashdemux: support downloading segments in reverse order
When a seek with a negative rate is requested, find the target
segment where gstsegment.stop belongs in and then download from
this segment backwards until the first segment.

This allows proper reverse playback.
2014-08-07 16:52:37 +03:00
Thiago Santos
24815a5feb dashdemux: return the error to the source immediately to stop faster
When flushing, this will prevent dashdemux from trying to download more
fragments or more chunks of the same fragment before stopping.

Also improves the error handling to not transform everything non-ok into
an error.

https://bugzilla.gnome.org/show_bug.cgi?id=734014
2014-08-01 10:37:15 -03:00
Sebastian Dröge
ae679506b1 dashdemux: Always use the redirect target to resolve relative URIs
But redownload the playlists from the original URI if it's not
a permanent redirect.
2014-05-28 12:47:51 +02:00
Thiago Santos
4c59f7df4c dashdemux: initialize the mutex and cond for fragment download 2014-05-12 16:27:37 -03:00
Thiago Santos
21b1d37023 dashdemux: remove unused stream uridownloader
The uridownloader for the stream fragments isn't used anymore.
2014-05-11 15:26:45 -03:00
Thiago Santos
a5b3ba09b8 dashdemux: deprecate max-buffering-time property
It is not used as dashdemux doesn't have a internal buffer
for fragments anymore
2014-05-07 01:00:50 -03:00
Thiago Santos
e9638fe3fd dashdemux: removing old unused code
The 'catch up mode' isn't needed anymore since dashdemux
is downloading and pushing from the same thread
2014-05-07 01:00:49 -03:00
Thiago Santos
5df2edf80c dashdemux: remember to set starting fragment to new fragments 2014-05-07 01:00:49 -03:00
Thiago Santos
733c7c0f16 dashdemux: handle a few more error cases
related to missing plugins, bad URI and a lockup on dealing with
errors from the source.
2014-05-07 01:00:49 -03:00
Thiago Santos
173c353716 dashdemux: Only set timestamp to the first buffer of fragments
Setting it to the other parts of the fragment is slightly wrong
and misleading as it isn't accurate enough.
2014-05-07 01:00:49 -03:00
Thiago Santos
f09dd7e7a5 dashdemux: handle error messages from the sources
Set up a message handling function to be able to catch errors
from the source element and signal the cond to allow the download
loop to retry the download.
2014-05-07 01:00:49 -03:00
Thiago Santos
15952dcd8e dashdemux: check for errors between downloads
To abort earlier in case of failures
2014-05-07 01:00:49 -03:00
Thiago Santos
b5998a4c3b dashdemux: Always accept the latency configure event
Upstream or internal elements are irrelevant and we should
always succeed.
2014-05-07 01:00:49 -03:00
Thiago Santos
d6671e73a6 dashdemux: measure download rate just like hlsdemux
new bitrate = (old bitrate + (last fragment bitrate * 3)) / 4
2014-05-07 01:00:49 -03:00
Thiago Santos
bed3d66605 dashdemux: remove uridownloader from fragments download
Instead, use a source element linked to a ghostpad to provide
smaller buffers and more granular control for downstream
buffering elements while also reducing startup latency
2014-05-07 01:00:49 -03:00
Sebastian Dröge
bb8227e279 dashdemux: Update for uri downloader API changes 2014-05-05 09:41:51 +02:00