Commit graph

154 commits

Author SHA1 Message Date
Thiago Santos 620af5b04b dash: mpdparser: plug leak in segmenttemplate parsing
Only copy the values from the parent if the current node doesn't
have that value, they were being copied from the parent and
then overwriten by the child node, leaking the parent's copy
2015-08-01 16:11:07 -03:00
Florin Apostol a7751aa967 dashdemux: gst_mpdparser_get_xml_prop_duration sets default value in case of parsing errors
The gst_mpdparser_get_xml_prop_duration function will set the
property_value to the default_value in case the parsing fails.

https://bugzilla.gnome.org/show_bug.cgi?id=752426
2015-07-27 12:37:09 -03:00
Florin Apostol 90b7c137b6 dahdemux: avoid overflows in computation of segment start time and duration
Used gst_util_uint64_scale to avoid overflows when segment start time
or duration is computed.

https://bugzilla.gnome.org/show_bug.cgi?id=752620
2015-07-24 10:09:19 -03:00
Alex Ashley 71a1e3669a dashdemux: add support for generating Protection events from ContentProtection elements
If a ContentProtection element is present in an AdaptationSet element,
send Protection events on the source pad, so that qtdemux can use this
information to correctly generate its source caps for DASH CENC
encrypted streams.

This allows qtdemux to support CENC encrypted DASH streams where the
content protection specific information is carried in the MPD file
rather than in pssh boxes in the initialisation segments.

This commit adds a new function to the adaptivedemux base class to allow
a GstEvent to be queued for a stream. The queue of events are sent the
next time a buffer is pushed for that stream.

https://bugzilla.gnome.org/show_bug.cgi?id=705991
2015-07-20 16:04:22 +01:00
Florin Apostol e12d3d9be2 dashdemux: default timescale is 1
default timescale value should be 1, not 0.

https://bugzilla.gnome.org/show_bug.cgi?id=752414
2015-07-16 20:05:58 +01:00
Florin Apostol 8b558d68cb dashdemux: free prop_string only after it's no longer needed
https://bugzilla.gnome.org/show_bug.cgi?id=752419
2015-07-16 19:57:40 +01:00
Sebastian Dröge a6507de48e mpdparse: g_slice_new() can't return NULL
It will abort() if allocation fails.
2015-07-10 13:26:51 +03:00
Sebastian Dröge 77b618ca77 mpdparser: Don't allow network access when reading the XML data 2015-07-10 13:20:26 +03:00
Sebastian Dröge cd47556351 mpdparser: Fix some memory leaks in the MPD parser and unit test 2015-07-08 23:15:14 +03:00
Sebastian Dröge a755fbb440 Revert "Revert "dashdemux: fixed gst_mpd_client_advance_segment to return GST_FLOW_EOS""
This reverts commit 4875ddf585.

This was based on a misunderstanding of the code.

https://bugzilla.gnome.org/show_bug.cgi?id=752085
2015-07-08 16:33:50 +03:00
Sebastian Dröge 4875ddf585 Revert "dashdemux: fixed gst_mpd_client_advance_segment to return GST_FLOW_EOS"
This reverts commit dfe37ffc59.

https://bugzilla.gnome.org/show_bug.cgi?id=752085
2015-07-07 19:51:39 +03:00
Sebastian Dröge 07d27d906a mpdparser: Fix off-by-one in has-next-segment calculation 2015-07-07 19:51:39 +03:00
Florin Apostol cc9885ef4e dashdemux: added parsing of bitstreamSwitching@AdaptationSet
https://bugzilla.gnome.org/show_bug.cgi?id=751170
2015-07-07 14:08:04 +03:00
Florin Apostol dfe37ffc59 dashdemux: fixed gst_mpd_client_advance_segment to return GST_FLOW_EOS
Fixed gst_mpd_client_advance_segment to return GST_FLOW_EOS if the
new index is out of range.

https://bugzilla.gnome.org/show_bug.cgi?id=751850
2015-07-07 13:30:07 +03:00
Florin Apostol 8551f74a05 dashdemux: fixed segment start when specified by SegmentTimeline
@t attribute in segment Timeline is relative to the period start.
Corrected the code to take this into account when computing segment
timestamp.

https://bugzilla.gnome.org/show_bug.cgi?id=751841
2015-07-05 13:54:00 -03:00
Florin Apostol 8e82129875 dashdemux: wrong segment duration computed by gst_mpd_client_setup_representation
Corrected computation of segment start and duration.

https://bugzilla.gnome.org/show_bug.cgi?id=751914
2015-07-05 13:31:38 -03:00
Florin Apostol 5151c42085 dashdemux: corrected search for audio languages
Corrected the initialisation of mimeType in
gst_mpdparser_get_list_and_nb_of_audio_language: the variable is used
in a loop, so it must be set to NULL at the beginning of each iteration.

https://bugzilla.gnome.org/show_bug.cgi?id=751911
2015-07-05 13:25:12 -03:00
Florin Apostol 0f37768626 dashdemux: corrected parsing of %u in segment templates
https://bugzilla.gnome.org/show_bug.cgi?id=751716
2015-06-30 15:24:28 +02:00
Florin Apostol e2d1126391 dashdemux: corrected recognition of $$$ in segment templates
fixed recognition of $$ after a $ that ends an identifier, eg $Time$$$

https://bugzilla.gnome.org/show_bug.cgi?id=751682
2015-06-29 19:28:56 -03:00
Florin Apostol e09cf2f3b6 dashdemux: corrected next fragment duration validation
Before returning the next fragment duration value, the
gst_mpd_client_get_next_fragment_duration function tries to validate it.
But the condition was incorrect.

https://bugzilla.gnome.org/show_bug.cgi?id=751539
2015-06-26 10:43:42 -03:00
Sebastian Dröge 626a8f0a74 dashdemux: Subtract the period start time from the presentation offset
We're interested in the offset between the period start timestamp and the
actual media timestamp so that we can properly correct for it. The absolute
presentation offset to timestamp 0 is useless as the only thing we really
care about is the offset between the current fragment timestamp and the
media timestamp.
2015-06-25 23:36:10 +02:00
Sebastian Dröge 95eb1aa49c dashdemux: Subtract the period start when seeking based on a template
Otherwise we will look for segments after the period usually. The seek
timestamp is relative to the start of the first period and we have to
select a segment relative to the current period's start.
2015-06-25 23:36:09 +02:00
Sebastian Dröge e671ad25a9 dashdemux: Include the period start in the fragment timestamps in all cases
We didn't do this for fragments that are generated on demand from a template,
only for the other cases when they were all generated upfront. This caused
fragment timestamps to start from 0 again for each new period.
2015-06-25 23:35:46 +02:00
Florin Apostol fa9b03186a dash: Correct check for valid timeShiftBufferDepth
If not set, the timeShiftBufferDepth has a default value of -1.
The standard says that this should be interpreted as infinite.

The gst_mpd_client_check_time_position function incorrectly compares
timeShiftBufferDepth with 0 instead of -1 to determine if it was set.

https://bugzilla.gnome.org/show_bug.cgi?id=751500
2015-06-25 16:27:18 +02:00
Florin Apostol dbf12ab760 dashdemux: Corrected duration argument for gst_mpd_client_add_media_segment call
The last parameter of gst_mpd_client_add_media_segment function is a
duration. But when called from gst_mpd_client_setup_representation, the
last argument was wrongly set to PeriodEnd

https://bugzilla.gnome.org/show_bug.cgi?id=751449
2015-06-25 10:16:24 +02:00
Florin Apostol 93f08347de dashdemux: incorrect use of period start
The period start information, calculated in gst_mpd_client_setup_media_presentation
function is stored in stream_period->start. The information read from
xml file and stored in stream_period->period->start is not changed.

If the xml file does not contain the period start information,
stream_period->period->start will be -1.

The function gst_mpd_client_get_next_segment_availability_end_time wants to
use period start time, but incorrectly uses stream_period->period->start
(value from xml file, which could be -1) instead of stream_period->start
(computed value)

https://bugzilla.gnome.org/show_bug.cgi?id=751465
2015-06-25 10:14:30 +02:00
Florin Apostol 8336d7a60b dashdemux: corrected computation of period's duration
According to ISO/IEC 23009-1:2014(E), chapter 5.3.2.1
"The Period extends until the PeriodStart of the next Period, or until
the end of the Media Presentation in the case of the last Period."

This means that a configured value for optional attribute period duration
should be ignored if the next period contains a start attribute or it is
the last period and the MPD contains a mediaPresentationDuration attribute.

https://bugzilla.gnome.org/show_bug.cgi?id=750797
2015-06-22 13:47:54 +02:00
Florin Apostol d268f812eb dashdemux: added warnings in gst_mpd_client_setup_streaming function
Added some warning messages in gst_mpd_client_setup_streaming to help
debug situations when the function will return FALSE.

Renamed a wrongly spelled variable.

https://bugzilla.gnome.org/show_bug.cgi?id=751149
2015-06-18 12:40:01 -03:00
Florin Apostol 9f56cc27ab dashdemux: fixed getting representation based on max bandwidth
The gst_mpdparser_get_rep_idx_with_max_bandwidth function assumes
representations are ordered by bandwidth and incorrectly returns the
first one when wanting the one with minimum bandwidth.

Corrected gst_mpdparser_get_rep_idx_with_max_bandwidth function to get the
correct representation in case max_bandwidth parameter is 0.

https://bugzilla.gnome.org/show_bug.cgi?id=751153
2015-06-18 11:29:45 -03:00
Florin Apostol b23e4452a2 dashdemux: fixed segfault for missing default namespace
Added a check for a_node->ns before accessing a_node->ns->href in
gst_mpdparser_get_xml_node_namespace. This could happen if the xml
is missing the default namespace.

https://bugzilla.gnome.org/show_bug.cgi?id=750866
2015-06-12 22:45:51 +02:00
Alex Ashley 5beeccdba2 dashdemux: fix error calculating large presentationTimeOffset values
If the presentationTimeOffset attribute of a DASH manifest contains
a value that is larger than 2^32, gstmpdparser incorrectly calculates
the stream's presentation time offset. This is due to two bugs:

1: Using gst_mpdparser_get_xml_prop_unsigned_integer rather than
   gst_mpdparser_get_xml_prop_unsigned_integer_64 to parse the
   attribute
2: gst_mpd_client_setup_representation multiplying the value by
   GST_SECOND and then dividing by timescale

https://bugzilla.gnome.org/show_bug.cgi?id=750804
2015-06-11 19:41:11 +02:00
Sebastian Dröge 9bcddde9bc mpdparser: Fix inverted logic introduced in last commit 2015-06-05 14:33:57 +02:00
Sebastian Dröge 15de547760 mpdparser: Calculate the number of segments we have when a segment template instead of a list is used
Otherwise we would just continue downloading new files forever until we get
404 for the first one, and then error out instead of going EOS.
2015-06-05 14:11:47 +02:00
Sebastian Dröge ec226e856d Revert "mpdparser: Don't consider streams with a known media presentation duration as live"
This reverts commit 37011e5198.

This change was actually completely unnecessary, the streams in question are
marked as static and are not considered live anyway.
2015-06-05 13:28:39 +02:00
Sebastian Dröge 37011e5198 mpdparser: Don't consider streams with a known media presentation duration as live 2015-06-05 13:21:55 +02:00
Sebastian Dröge 2b207c0b65 mpdparser: Don't crash in debug output if stream->segments is NULL 2015-06-04 15:58:46 +02:00
Sebastian Dröge 64a2dcf582 mpdparse: Clamp seek times to the availabilityStartTime
Otherwise we will seek to negative times, which are interpreted as unsigned
integers later.
2015-06-04 13:36:05 +02:00
Sebastian Dröge f9ada426d4 mpdparser: Improve debug output a bit when advancing segments 2015-06-04 13:13:39 +02:00
Sebastian Dröge 60047b6b92 mpdparser: Use 64 bit integer format strings when passing a 64 bit integer
Otherwise we'll only get half of its bits printed on 32 bit architectures.

For this, promote the %d-style format strings to something that accepts
64 bit integers with G_GINT64_MODIFIER.
2015-06-04 11:05:07 +02:00
Sebastian Dröge 1be223fdc3 mpdparse: Validate format strings before using them
Using format strings from an untrusted source without validation is
calling for problems, and at least allows to remotely crash your application.
If not worse.
2015-06-04 10:47:07 +02:00
Sebastian Dröge 88d8dfd9c6 mpdparser: Add the startNumber as offset to the segment index when using a template 2015-06-03 20:03:59 +02:00
David Waring c4ff5359aa dashdemux: Fix segfault introduced by segment iteration refactoring (2105a310).
The functions to get the next fragment, next fragment timestamp and to advance
to the next fragment need to work differently when stream->segments is NULL.
Use logic similar to that introduced by commit 2105a310 to perform these
functions.

https://bugzilla.gnome.org/show_bug.cgi?id=749684
2015-05-25 10:02:07 -03:00
Thiago Santos 0910540d58 dashdemux: use signed integet to represent segment index
We need to be able to represent -1 to check when we are EOS
on reverse playback and unsigned integer won't allow that.

CID #1298193
CID #1298194
CID #1298195

https://bugzilla.gnome.org/show_bug.cgi?id=749534
2015-05-25 09:02:30 -03:00
Thiago Santos f4789d0430 dashdemux: avoid busy-looping when waiting for new fragment
When all fragments have already been downloaded on a live stream
dashdemux would busy loop as the default implementation of
has_next_fragment would return TRUE. Implement it to correctly
signal if adaptivedemux should wait for the manifest update before
trying to get new fragments.
2015-05-13 13:39:32 -03:00
Thiago Santos 23ad922b64 dashdemux: Improve live stream manifest update repositioning
When updating the manifest the timestamps on it might have changed a little
due to rounding and timescale conversions. If the change makes the timestamp
of the current segment to go up it makes dashdemux reposition to the previous
one causing one extra unnecessary download.

So when repositioning add an extra 10 microseconds to cover for that rounding
issues and increase the chance of falling in the same segment.

Additionally, also improve the time used when the client is already after the
last segment. Instead of using the last segment starting timestamp use the
final timestamp to make it reposition to the next one and not to the one that
has already been downloaded.
2015-05-13 13:39:31 -03:00
Thiago Santos 7de9fbc122 dashdemux: add more protection when acessing gptrarray entries
The glib structure doesn't do range checking so we have to do it
ourselves.

Also adds some more debugging messages
2015-05-13 13:39:24 -03:00
Thiago Santos f298fca8ad dashdemux: remove unused functions
These functions of directly getting and setting segment indexes
are no longer useful as now we need 2 indexes: repeat and segment
index.

The only operations needed are advance_segment, going back to the
first one or seeking for a timestamp.
2015-05-13 13:39:18 -03:00
Thiago Santos d617139ee7 dashdemux: reuse seeking function to reduce repeated code
Instead of writing a seek routine, just use the mpdparser function.

Also remove function that is not needed anymore
2015-05-13 13:35:14 -03:00
Thiago Santos 57a2105a31 dashdemux: refactor segment iteration for better performance
Segments are now stored with their repeat counts instead of spanding
them to multiple segments. This caused advancing to the next segment
using a single index to have to iterate over the whole list every time.

This commit addresses this by storing both the segment index as well
as the repeat index and makes advancing to next segment just an
increment of the repeat or the segment index.
2015-05-13 13:35:14 -03:00
Thiago Santos 6344f86e44 dashdemux: improve mpd parsing for repeated segment entries
Use a single segment to represent it internally to avoid using too
much memory. This has the drawback of issuing a linear search to
find the correct segment to play but this can be fixed by using
binary searches or caching the current position and just looking
for the next one.

https://bugzilla.gnome.org/show_bug.cgi?id=748369
2015-05-13 13:35:14 -03:00