The smallest section ever needs to be at least 3 bytes (i.e. just the short
header).
Non-short headers need to be at least 11 bytes long (3 for the minimum header,
5 for the non-short header, and 4 for the CRC).
https://bugzilla.gnome.org/show_bug.cgi?id=775048
Short sections have 3 bytes of common header, while other sections
have 8 bytes of common header. If packetizing common header of short
section, we should stop after the first 3 bytes.
https://bugzilla.gnome.org/show_bug.cgi?id=735653
It was previously a mix and match of both variants, introducing just too much
confusion.
The prefix are from now on:
* GstMpegts for structures and type names (and not GstMpegTs)
* gst_mpegts_ for functions (and not gst_mpeg_ts_)
* GST_MPEGTS_ for enums/flags (and not GST_MPEG_TS_)
* GST_TYPE_MPEGTS_ for types (and not GST_TYPE_MPEG_TS_)
The rationale for chosing that is:
* the namespace is shorter/direct (it's mpegts, not mpeg_ts nor mpeg-ts)
* the namespace is one word under Gst
* it's shorter (yah)
ATSC has its own version of the EIT table (DVB also has one).
This patch adds parsing for the ATSC EIT table and also fixed
the section identification to mark it as the ATSC one.
The implementation aws refactored to reuse some common internal
structures from ETT.
Also adds its dumping function to ts-parser example
https://bugzilla.gnome.org/show_bug.cgi?id=730435
Adds the system time table structure and functions for convenient parsing of
it and for getting the UTC datetime that it represents. Also adds its
information dumping to the ts-parser example
https://bugzilla.gnome.org/show_bug.cgi?id=730435
ETT (extended text table) contains ATSC text information with descriptions
of virtual channels and events. The text can be internationalized and also
compressed.
https://bugzilla.gnome.org/show_bug.cgi?id=730435
Add a parsing function for MGT and also detect the EIT tables
for ATSC, the EIT pids are reported inside the MGT and we are still
only relying only on the table id for detecting it. In the future we
would want to also check the pid and compare with whatever the MGT
previously reported to confirm that it is indeed the EIT.
https://bugzilla.gnome.org/show_bug.cgi?id=730435
Make the ATSC section parse handle both TVCT and CVCT as they are
nearly the same struct (CVCT uses 2 reserved bits that are ignored
in TVCT).
This is changing the glib type and the struct name but TVCT wasn't
released in a stable package yet so there should be no problem.
Also includes some parsing fixes and changes short_name to be
directly stored as utf8 rather than utf16
https://bugzilla.gnome.org/show_bug.cgi?id=730642
So this is actually pointless. We'll just have to ignore
Coverity moaning on those.
Revert "mpegts: test for allocation failure"
This reverts commit 224cb81b8f.
While it's unlikely to get there, it silences the coverity warning
on the error code path that we test for NULL before freeing, when
all branches there are from locations where pmt cannot be NULL,
and removing the NULL check makes the code more vulnerable to a
hypothetical future branch from somewhere where it can be.
Coverity 1139852
- Length of NIT stream descriptors was not detected correct
- Reserved bits was not set according to EN 300 468, ISO/IEC 13818-1
- Also set output data size if the section was previously packetized
https://bugzilla.gnome.org/show_bug.cgi?id=723892
While it was a great idea, various g-i based bindings don't support
GArray with entries greater than sizeof(gpointer) :(
So let's just make everybody happy by just using GPtrArray.
And since we're breaking the API, also rename the various descriptor fields
to no longer have the descriptor_ prefix.
It does cost a bit more in terms of memory/cpu usage, but makes it usable
from bindings.
* Avoid repeating code everywhere, and instead provide all parsing
information in one go.
* Add BAT support
* Refine BAT/CAT identification (by adding PID checks)
Due to the variety of section types out there, we need to add
some checks when identifying section types.
We check here that the PID is also consistent with the table_id.
* Add a base page for the library
* Add pages for the base MPEG-TS section and descriptors
* Add pages for the known variants
* Add documentation on more fields/sections/types
* Remove some fixmes that were ... fixed
* In order to avoid future clashing between table_id for the various
mpeg-ts variants, use different enums.
* In order to keep everything clean(ish) and allow for cleaner growth,
split into different files (will need the same for descriptors later)
* Also ... implement free functions for all table types :)
Sorry for this :( But this makes it more in sync with expected type
naming in gobject (i.e. CamelCase and not CamelMAYBECase).
Also split descriptor type enums into the different variants:
* ISO H.222.0 / 13818-1 (i.e. standard mpeg-ts)
* DVB
* ATSC
* ISDB
* miscellaneous
This will avoid future clashes when specs use the same descriptor type
Exposes various MPEG-TS (ISO/IEC 13818-1) and DVB (EN 300 468) Section
Information as well as descriptors for usage by plugins and applications.
This replaces entirely the old GstStructure-based system for conveying
mpeg-ts information to applications and other plugins.
Parsing and validation is done on a "when-needed" basis. This ensures
the minimal overhead for elements and applications creating and using
sections and descriptors.
Since all information is made available, this also allows applications
to parse custom sections and descriptors.
Right now the library is targeted towards parsing, but the structures
could be used in the future to allow applications to create and inject
sections and descriptors (for usage by various mpeg-ts elements).
https://bugzilla.gnome.org/show_bug.cgi?id=702724
