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*~
Build
*.user
*.suo
*.ipch
*.sdf
*.opensdf
*.DS_Store
# Meson
/build
/subprojects
# hotdoc
docs/hotdoc/libs/generated_sitemap.txt

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include: "https://gitlab.freedesktop.org/gstreamer/gst-ci/raw/master/gitlab/ci_template.yml"

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ext/sctp/usrsctp/usrsctplib/

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Erik Walthinsen <omega@temple-baptist.com>
Matt Howell <mhowell@users.sourceforge.net>
Brent Bradburn <bbradburn@users.sourceforge.net>
Wim Taymans <wim.taymans@chello.be>
Richard Boulton <richard@tartarus.org>
Zaheer Abbas Merali <zaheerabbas at merali dot org>
David I. Lehn <dlehn@users.sourceforge.net>
Chris Emerson <chris@tartarus.org>
Jens Thiele <karme@unforgettable.com>
Thomas Nyberg <thomas@codefactory.se>
Bastien Nocera <hadess@hadess.net>
Christian Fredrik Kalager Schaller <Uraeus@linuxrising.org>
Thomas Vander Stichele <thomas@apestaart.org>
Andy Wingo <wingo@pobox.com>
Cameron Hutchison <camh@xdna.net>
David Schleef <ds@schleef.org>
Benjamin Otte <in7y118@public.uni-hamburg.de>
Ronald Bultje <rbultje@ronald.bitfreak.net>
Julien MOUTTE <julien@moutte.net>
Jan Schmidt <thaytan@mad.scientist.com>
Arwed v. Merkatz <v.merkatz@gmx.net>

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GStreamer is currently maintained by the consensus of a number
of people, including, but not limited to:
Jan Schmidt <thaytan@noraisin.net>
Wim Taymans <wim.taymans@gmail.com>
David Schleef <ds@schleef.org>
Tim-Philipp Müller <tim centricular net>
Sebastian Dröge <slomo@coaxion.net>
Maintainer-related issues should be addressed to:
gstreamer-devel@lists.freedesktop.org

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GStreamer 1.20 Release Notes
GStreamer 1.20 has not been released yet. It is scheduled for release
around October/November 2021.
1.19.x is the unstable development version that is being developed in
the git main branch and which will eventually result in 1.20, and 1.19.2
is the current development release in that series
It is expected that feature freeze will be in early October 2021,
followed by one or two 1.19.9x pre-releases and the new 1.20 stable
release around October/November 2021.
1.20 will be backwards-compatible to the stable 1.18, 1.16, 1.14, 1.12,
1.10, 1.8, 1.6,, 1.4, 1.2 and 1.0 release series.
See https://gstreamer.freedesktop.org/releases/1.20/ for the latest
version of this document.
Last updated: Wednesday 22 September 2021, 18:00 UTC (log)
Introduction
The GStreamer team is proud to announce a new major feature release in
the stable 1.x API series of your favourite cross-platform multimedia
framework!
As always, this release is again packed with many new features, bug
fixes and other improvements.
Highlights
- this section will be completed in due course
Major new features and changes
Noteworthy new features and API
- this section will be filled in in due course
New elements
- this section will be filled in in due course
New element features and additions
- this section will be filled in in due course
Plugin and library moves
- this section will be filled in in due course
- There were no plugin moves or library moves in this cycle.
Plugin removals
The following elements or plugins have been removed:
- this section will be filled in in due course
Miscellaneous API additions
- this section will be filled in in due course
Miscellaneous performance, latency and memory optimisations
- this section will be filled in in due course
Miscellaneous other changes and enhancements
- this section will be filled in in due course
Tracing framework and debugging improvements
- this section will be filled in in due course
Tools
- this section will be filled in in due course
GStreamer RTSP server
- this section will be filled in in due course
GStreamer VAAPI
- this section will be filled in in due course
GStreamer OMX
- this section will be filled in in due course
GStreamer Editing Services and NLE
- this section will be filled in in due course
GStreamer validate
- this section will be filled in in due course
GStreamer Python Bindings
- this section will be filled in in due course
GStreamer C# Bindings
- this section will be filled in in due course
GStreamer Rust Bindings and Rust Plugins
The GStreamer Rust bindings are released separately with a different
release cadence that’s tied to gtk-rs, but the latest release has
already been updated for the upcoming new GStreamer 1.20 API.
gst-plugins-rs, the module containing GStreamer plugins written in Rust,
has also seen lots of activity with many new elements and plugins.
What follows is a list of elements and plugins available in
gst-plugins-rs, so people don’t miss out on all those potentially useful
elements that have no C equivalent.
- FIXME: add new elements
Rust audio plugins
- audiornnoise: New element for audio denoising which implements the
noise removal algorithm of the Xiph RNNoise library, in Rust
- rsaudioecho: Port of the audioecho element from gst-plugins-good
rsaudioloudnorm: Live audio loudness normalization element based on
the FFmpeg af_loudnorm filter
- claxondec: FLAC lossless audio codec decoder element based on the
pure-Rust claxon implementation
- csoundfilter: Audio filter that can use any filter defined via the
Csound audio programming language
- lewtondec: Vorbis audio decoder element based on the pure-Rust
lewton implementation
Rust video plugins
- cdgdec/cdgparse: Decoder and parser for the CD+G video codec based
on a pure-Rust CD+G implementation, used for example by karaoke CDs
- cea608overlay: CEA-608 Closed Captions overlay element
- cea608tott: CEA-608 Closed Captions to timed-text (e.g. VTT or SRT
subtitles) converter
- tttocea608: CEA-608 Closed Captions from timed-text converter
- mccenc/mccparse: MacCaption Closed Caption format encoder and parser
- sccenc/sccparse: Scenarist Closed Caption format encoder and parser
- dav1dec: AV1 video decoder based on the dav1d decoder implementation
by the VLC project
- rav1enc: AV1 video encoder based on the fast and pure-Rust rav1e
encoder implementation
- rsflvdemux: Alternative to the flvdemux FLV demuxer element from
gst-plugins-good, not feature-equivalent yet
- rsgifenc/rspngenc: GIF/PNG encoder elements based on the pure-Rust
implementations by the image-rs project
Rust text plugins
- textwrap: Element for line-wrapping timed text (e.g. subtitles) for
better screen-fitting, including hyphenation support for some
languages
Rust network plugins
- reqwesthttpsrc: HTTP(S) source element based on the Rust
reqwest/hyper HTTP implementations and almost feature-equivalent
with the main GStreamer HTTP source souphttpsrc
- s3src/s3sink: Source/sink element for the Amazon S3 cloud storage
- awstranscriber: Live audio to timed text transcription element using
the Amazon AWS Transcribe API
Generic Rust plugins
- sodiumencrypter/sodiumdecrypter: Encryption/decryption element based
on libsodium/NaCl
- togglerecord: Recording element that allows to pause/resume
recordings easily and considers keyframe boundaries
- fallbackswitch/fallbacksrc: Elements for handling potentially
failing (network) sources, restarting them on errors/timeout and
showing a fallback stream instead
- threadshare: Set of elements that provide alternatives for various
existing GStreamer elements but allow to share the streaming threads
between each other to reduce the number of threads
- rsfilesrc/rsfilesink: File source/sink elements as replacements for
the existing filesrc/filesink elements
Build and Dependencies
- this section will be filled in in due course
gst-build
- this section will be filled in in due course
Cerbero
Cerbero is a meta build system used to build GStreamer plus dependencies
on platforms where dependencies are not readily available, such as
Windows, Android, iOS and macOS.
General improvements
- this section will be filled in in due course
macOS / iOS
- this section will be filled in in due course
Windows
- this section will be filled in in due course
Windows MSI installer
- this section will be filled in in due course
Linux
- this section will be filled in in due course
Android
- this section will be filled in in due course
Platform-specific changes and improvements
Android
- this section will be filled in in due course
macOS and iOS
- this section will be filled in in due course
Windows
- this section will be filled in in due course
Linux
- this section will be filled in in due course
Documentation improvements
- this section will be filled in in due course
Possibly Breaking Changes
- this section will be filled in in due course
- MPEG-TS SCTE-35 API changes (FIXME: flesh out)
- gst_parse_launch() and friends now error out on non-existing
properties on top-level bins where they would silently fail and
ignore those before.
Known Issues
- this section will be filled in in due course
- There are a couple of known WebRTC-related regressions/blockers:
- webrtc: DTLS setup with Chrome is broken
- webrtcbin: First keyframe is usually lost
Contributors
- this section will be filled in in due course
… and many others who have contributed bug reports, translations, sent
suggestions or helped testing.
Stable 1.20 branch
After the 1.20.0 release there will be several 1.20.x bug-fix releases
which will contain bug fixes which have been deemed suitable for a
stable branch, but no new features or intrusive changes will be added to
a bug-fix release usually. The 1.20.x bug-fix releases will be made from
the git 1.20 branch, which will be a stable branch.
1.20.0
1.20.0 is scheduled to be released around October/November 2021.
Schedule for 1.22
Our next major feature release will be 1.22, and 1.21 will be the
unstable development version leading up to the stable 1.22 release. The
development of 1.21/1.22 will happen in the git main branch.
The plan for the 1.22 development cycle is yet to be confirmed.
1.22 will be backwards-compatible to the stable 1.20, 1.18, 1.16, 1.14,
1.12, 1.10, 1.8, 1.6, 1.4, 1.2 and 1.0 release series.
------------------------------------------------------------------------
These release notes have been prepared by Tim-Philipp Müller with
contributions from …
License: CC BY-SA 4.0

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GStreamer 1.19.x development series
WHAT IT IS
----------
This is GStreamer, a framework for streaming media.
WHERE TO START
--------------
We have a website at
https://gstreamer.freedesktop.org
Our documentation, including tutorials, API reference and FAQ can be found at
https://gstreamer.freedesktop.org/documentation/
You can subscribe to our mailing lists:
https://lists.freedesktop.org/mailman/listinfo/gstreamer-announce
https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
We track bugs, feature requests and merge requests (patches) in GitLab at
https://gitlab.freedesktop.org/gstreamer/
You can join us on IRC - #gstreamer on irc.freenode.org
GStreamer 1.0 series
--------------------
Starring
GSTREAMER
The core around which all other modules revolve. Base functionality and
libraries, some essential elements, documentation, and testing.
BASE
A well-groomed and well-maintained collection of GStreamer plug-ins and
elements, spanning the range of possible types of elements one would want
to write for GStreamer.
And introducing, for the first time ever, on the development screen ...
THE GOOD
--- "Such ingratitude. After all the times I've saved your life."
A collection of plug-ins you'd want to have right next to you on the
battlefield. Shooting sharp and making no mistakes, these plug-ins have it
all: good looks, good code, and good licensing. Documented and dressed up
in tests. If you're looking for a role model to base your own plug-in on,
here it is.
If you find a plot hole or a badly lip-synced line of code in them,
let us know - it is a matter of honour for us to ensure Blondie doesn't look
like he's been walking 100 miles through the desert without water.
THE UGLY
--- "When you have to shoot, shoot. Don't talk."
There are times when the world needs a color between black and white.
Quality code to match the good's, but two-timing, backstabbing and ready to
sell your freedom down the river. These plug-ins might have a patent noose
around their neck, or a lock-up license, or any other problem that makes you
think twice about shipping them.
We don't call them ugly because we like them less. Does a mother love her
son less because he's not as pretty as the other ones ? No - she commends
him on his great personality. These plug-ins are the life of the party.
And we'll still step in and set them straight if you report any unacceptable
behaviour - because there are two kinds of people in the world, my friend:
those with a rope around their neck and the people who do the cutting.
THE BAD
--- "That an accusation?"
No perfectly groomed moustache or any amount of fine clothing is going to
cover up the truth - these plug-ins are Bad with a capital B.
They look fine on the outside, and might even appear to get the job done, but
at the end of the day they're a black sheep. Without a golden-haired angel
to watch over them, they'll probably land in an unmarked grave at the final
showdown.
Don't bug us about their quality - exercise your Free Software rights,
patch up the offender and send us the patch on the fastest steed you can
steal from the Confederates. Because you see, in this world, there's two
kinds of people, my friend: those with loaded guns and those who dig.
You dig.
The Lowdown
-----------
--- "I've never seen so many plug-ins wasted so badly."
GStreamer Plug-ins has grown so big that it's hard to separate the wheat from
the chaff. Also, distributors have brought up issues about the legal status
of some of the plug-ins we ship. To remedy this, we've divided the previous
set of available plug-ins into four modules:
- gst-plugins-base: a small and fixed set of plug-ins, covering a wide range
of possible types of elements; these are continuously kept up-to-date
with any core changes during the development series.
- We believe distributors can safely ship these plug-ins.
- People writing elements should base their code on these elements.
- These elements come with examples, documentation, and regression tests.
- gst-plugins-good: a set of plug-ins that we consider to have good quality
code, correct functionality, our preferred license (LGPL for the plug-in
code, LGPL or LGPL-compatible for the supporting library).
- We believe distributors can safely ship these plug-ins.
- People writing elements should base their code on these elements.
- gst-plugins-ugly: a set of plug-ins that have good quality and correct
functionality, but distributing them might pose problems. The license
on either the plug-ins or the supporting libraries might not be how we'd
like. The code might be widely known to present patent problems.
- Distributors should check if they want/can ship these plug-ins.
- People writing elements should base their code on these elements.
- gst-plugins-bad: a set of plug-ins that aren't up to par compared to the
rest. They might be close to being good quality, but they're missing
something - be it a good code review, some documentation, a set of tests,
a real live maintainer, or some actual wide use.
If the blanks are filled in they might be upgraded to become part of
either gst-plugins-good or gst-plugins-ugly, depending on the other factors.
- If the plug-ins break, you can't complain - instead, you can fix the
problem and send us a patch, or bribe someone into fixing them for you.
- New contributors can start here for things to work on.
PLATFORMS
---------
- Linux is of course fully supported
- FreeBSD is reported to work; other BSDs should work too; same for Solaris
- MacOS works, binary 1.x packages can be built using the cerbero build tool
- Windows works; binary 1.x packages can be built using the cerbero build tool
- MSys/MinGW builds
- Microsoft Visual Studio builds are also available and supported
- Android works, binary 1.x packages can be built using the cerbero build tool
- iOS works
INSTALLING FROM PACKAGES
------------------------
You should always prefer installing from packages first. GStreamer is
well-maintained for a number of distributions, including Fedora, Debian,
Ubuntu, Mandrake, Arch Linux, Gentoo, ...
Only in cases where you:
- want to hack on GStreamer
- want to verify that a bug has been fixed
- do not have a sane distribution
should you choose to build from source tarballs or git.
Find more information about the various packages at
https://gstreamer.freedesktop.org/download/
COMPILING FROM SOURCE TARBALLS
------------------------------
- again, make sure that you really need to install from source!
If GStreamer is one of your first projects ever that you build from source,
consider taking on an easier project.
- you need a recent version of Meson installed, see
http://mesonbuild.com/Getting-meson.html
and
https://gitlab.freedesktop.org/gstreamer/gst-build/blob/master/README.md
- run
meson build
ninja -C build
to build GStreamer.
- if you want to install it (not required, but what you usually want to do), run
ninja -C build install
- try out a simple test:
gst-launch-1.0 -v fakesrc num_buffers=5 ! fakesink
(If you didn't install GStreamer, run `./build/tools/gst-launch-1.0`)
If it outputs a bunch of messages from fakesrc and fakesink, everything is
ok.
If it did not work, keep in mind that you might need to adjust the
PATH and/or LD_LIBRARY_PATH environment variables to make the system
find GStreamer in the prefix where you installed (by default that is /usr/local).
- After this, you're ready to install gst-plugins, which will provide the
functionality you're probably looking for by now, so go on and read
that README.
COMPILING FROM GIT
------------------
You can build an uninstalled GStreamer from git for development or testing
purposes without affecting your system installation.
Get started with:
git clone https://gitlab.freedesktop.org/gstreamer/gst-build
meson build
ninja -C build
ninja -C build uninstalled
For more information, see the `gst-build` module and its documentation:
https://gitlab.freedesktop.org/gstreamer/gst-build/blob/master/README.md
PLUG-IN DEPENDENCIES AND LICENSES
---------------------------------
GStreamer is developed under the terms of the LGPL (see COPYING file for
details). Some of our plug-ins however rely on libraries which are available
under other licenses. This means that if you are distributing an application
which has a non-GPL compatible license (for instance a closed-source
application) with GStreamer, you have to make sure not to distribute GPL-linked
plug-ins.
When using GPL-linked plug-ins, GStreamer is for all practical reasons
under the GPL itself.
HISTORY
-------
The fundamental design comes from the video pipeline at Oregon Graduate
Institute, as well as some ideas from DirectMedia. It's based on plug-ins that
will provide the various codec and other functionality. The interface
hopefully is generic enough for various companies (ahem, Apple) to release
binary codecs for Linux, until such time as they get a clue and release the
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=================================
GStreamer Static Linking README
=================================
DRAFT, April 2013
I. INTRODUCTION
It is possible to link GStreamer libraries, plugins and applications
statically, both in case of free/libre/open-source software applications
and proprietary applications. On some platforms static linking may even
be required.
However, distributing statically linked binaries using GStreamer usually
requires additional effort to stay compliant with the GNU LGPL v2.1 license.
The purpose of this document is to draw attention to this fact, and to
summarise in layman's terms what we believe is required from anyone
distributing statically linked GStreamer binaries. Most of this also
applies to dynamically linked GStreamer binaries.
II. DISCLAIMER
This document is not legal advice, nor is it comprehensive. It may use
words in ways that do not match the definition or use in the license
text. It may even be outright wrong. Read the license text for all the
details, it is the only legally binding document in this respect.
This document is primarily concerned with the implications for the
distribution of binaries based on LGPL-licensed software as imposed by
the LGPL license, but there may be other restrictions to the distribution
of such binaries, such as terms and conditions of distribution channels
(e.g. "app stores").
III. THE SPIRIT OF THE LGPL LICENSE
The GNU LGPL v2.1 license allows use of such-licensed software by
proprietary applications, but still aims to ensure that at least the
LGPL-licensed software parts remain free under all circumstances. This
means any changes to LGPL-licensed source code must be documented and
be made available on request to those who received binaries of the
software. It also means that it must be possible to make changes to the
LGPL-licensed software parts and make the application use those, as far
as that is possible. And that recipients of an application using
LGPL-licensed software are made aware of their rights according to the
LGPL license.
In an environment where GStreamer libraries and plugins are used as
dynamically-loaded shared objects (DLL/.so/.dyn files), this is usually
not a big problem, because it is fairly easy to compile a modified version
of the GStreamer libraries or LGPL plugins, and the application will/should
just pick up and use the modified version automatically. All that is needed
is for the original, LGPL-licensed source code and source code modifications
to be made available, and for a way to build the libraries or plugins for
the platform required (usually that will be using the build system scripts
that come with GStreamer, and using the typical build environment on the
system in question, but where that is not the case the needed build scripts
and/or tools would need to be provided as well).
IV. THINGS YOU NEED TO DO
* You must tell users of your application that you are using LGPL-licensed
software, which LGPL-licensed software exactly, and you must provide them
with a copy of the license so they know their rights under the LGPL.
* You must provide (on request) all the source code and all the changes
or additions you have made to the LGPL-licensed software you are using.
For GStreamer code we would recommend that the changes be provided either
in form of a branch in a git repository, or as a set of "git format-patch"-
style patches against a GStreamer release or a snapshot of a GStreamer git
repository. The patches should ideally say what was changed and why it
was changed, and there should ideally be separate patches for independent
changes.
* You must provide a way for users of your application to make changes to
the LGPL-licensed parts of the code, and re-create a full application
binary with the changes (using the standard toolchain and tools of the
target platform; if you are using a custom toolchain or custom tools
you must provide these and document how to use them to create a new
application binary).
Note that this of course does not mean that the user is allowed to
re-distribute the changed application. Nor does it mean that you have
to provide your proprietary source code - it is sufficient to provide a
ready-made compiled object file that can be relinked into an application
binary with the re-compiled LGPL components.
V. THINGS TO LOOK OUT FOR
While most GStreamer plugins and the libraries they depend on are licensed
under the LGPL or even more permissive licenses, that is not the case for
all plugins and libraries used, esp. those in the gst-plugins-ugly or
some of those in the gst-plugins-bad set of plugins.
When statically linking proprietary code, care must be taken not to
statically link plugins or libraries that are licensed under less permissive
terms than the LGPL, such as e.g. GPL-licensed libraries.
VI. SPECIAL CONSIDERATIONS FOR SPECIFIC USE-CASES
1. Proprietary GStreamer/GLib-based Application On iOS
Let's assume an individual or a company wants to distribute a proprietary
iOS application that is built on top of GStreamer and GLib through
Apple's App Store. At the time of writing the Apple iPhone developer
agreement didn’t allow the bundling of shared libraries, so distributing
a proprietary iOS application with shared libraries is only possible using
distribution mechanisms outside of the App Store and/or only to jailbroken
devices, a prospect that may not appeal to our individual or company. So the
only alternative then is to link everything statically, which means the
obligations mentioned above come into play.
2. Example: Jabber on iOS
Tandberg (now Cisco) created a Jabber application for iOS, based on GStreamer.
On request they provided an LGPL compliance bundle in form of a zip file, with
roughly the following contents:
buildapp.sh
readme.txt
Jabber/Jabber-Info.plist
Jabber/libip.a [236MB binary with proprietary code]
Jabber/main.mm
Jabber/xcconfig/Application.xcconfig
Jabber/xcconfig/Debug.xcconfig
Jabber/xcconfig/Release.xcconfig
Jabber/xcconfig/Shared.xcconfig
Jabber/Resources/*.lproj/Localizable.strings
Jabber/Resources/{Images,Audio,Sounds,IB,Message Styles,Emoticons,Fonts}/*
Jabber/Resources/*
Jabber.xcodeproj/project.pbxproj
Jabber.xcodeproj/project.xcworkspace/contents.xcworkspacedata
opensource/build/config.site
opensource/build/m4/movi.m4
opensource/build/scripts/clean-deps.sh
opensource/build/scripts/fixup-makefile.sh
opensource/build/scripts/MoviMaker.py
opensource/build.sh
opensource/env.sh
opensource/Makefile
opensource/external/glib/*
opensource/external/gstreamer/{gstreamer,gst-plugins-*}/*
opensource/external/openssl/*
opensource/external/proxy-libintl/*
opensource/toolchain/darwin-x86/bin/{misc autotoools,m4,glib-mkenums,glib-genmarshal,libtool,pkg-config,etc.}
opensource/toolchain/darwin-x86/share/{aclocal,aclocal-1.11,autoconf,automake-1.11,libtool}/*
opensource/toolchain/darwin-x86/share/Config.pm
opensource/toolchain/darwin-x86/share/Config.pm.movi.in
patches/glib/glib.patch
patches/gst-plugins-bad/gst-plugins-bad.patch
patches/gst-plugins-base/gst-plugins-base.patch
patches/gst-plugins-good/gst-plugins-good.patch
patches/gstreamer/gstreamer.patch
patches/openssl/openssl.patch
readme.txt starts with "This Readme file describes how to build the Cisco
Jabber for iPad application. You need to install Xcode, but the final package
is built by running buildapp.sh." and describes how to build project,
prerequisites, the procedure in detail, and a "How to Include Provisioning
Profile Manually / Alternate Code Signing Instructions" section.
3. Random Links Which May Be Of Interest
[0] http://multinc.com/2009/08/24/compatibility-between-the-iphone-app-store-and-the-lgpl/

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This is GStreamer gst-plugins-bad 1.19.2.
GStreamer 1.19 is the development branch leading up to the next major
stable version which will be 1.20.
The 1.19 development series adds new features on top of the 1.18 series and is
part of the API and ABI-stable 1.x release series of the GStreamer multimedia
framework.
Full release notes will one day be found at:
https://gstreamer.freedesktop.org/releases/1.20/
Binaries for Android, iOS, Mac OS X and Windows will usually be provided
shortly after the release.
This module will not be very useful by itself and should be used in conjunction
with other GStreamer modules for a complete multimedia experience.
- gstreamer: provides the core GStreamer libraries and some generic plugins
- gst-plugins-base: a basic set of well-supported plugins and additional
media-specific GStreamer helper libraries for audio,
video, rtsp, rtp, tags, OpenGL, etc.
- gst-plugins-good: a set of well-supported plugins under our preferred
license
- gst-plugins-ugly: a set of well-supported plugins which might pose
problems for distributors
- gst-plugins-bad: a set of plugins of varying quality that have not made
their way into one of core/base/good/ugly yet, for one
reason or another. Many of these are are production quality
elements, but may still be missing documentation or unit
tests; others haven't passed the rigorous quality testing
we expect yet.
- gst-libav: a set of codecs plugins based on the ffmpeg library. This is
where you can find audio and video decoders and encoders
for a wide variety of formats including H.264, AAC, etc.
- gstreamer-vaapi: hardware-accelerated video decoding and encoding using
VA-API on Linux. Primarily for Intel graphics hardware.
- gst-omx: hardware-accelerated video decoding and encoding, primarily for
embedded Linux systems that provide an OpenMax
implementation layer such as the Raspberry Pi.
- gst-rtsp-server: library to serve files or streaming pipelines via RTSP
- gst-editing-services: library an plugins for non-linear editing
==== Download ====
You can find source releases of gstreamer in the download
directory: https://gstreamer.freedesktop.org/src/gstreamer/
The git repository and details how to clone it can be found at
https://gitlab.freedesktop.org/gstreamer/
==== Homepage ====
The project's website is https://gstreamer.freedesktop.org/
==== Support and Bugs ====
We have recently moved from GNOME Bugzilla to GitLab on freedesktop.org
for bug reports and feature requests:
https://gitlab.freedesktop.org/gstreamer
Please submit patches via GitLab as well, in form of Merge Requests. See
https://gstreamer.freedesktop.org/documentation/contribute/
for more details.
For help and support, please subscribe to and send questions to the
gstreamer-devel mailing list (see below for details).
There is also a #gstreamer IRC channel on the Freenode IRC network.
==== Developers ====
GStreamer source code repositories can be found on GitLab on freedesktop.org:
https://gitlab.freedesktop.org/gstreamer
and can also be cloned from there and this is also where you can submit
Merge Requests or file issues for bugs or feature requests.
Interested developers of the core library, plugins, and applications should
subscribe to the gstreamer-devel list:
https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

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GStreamer uses a *large* array of tools and libraries, most of which are
optional. We have attempted to make sure that any code that depends on
optional libraries doesn't get built unless you have those libraries. If
you find this not to be the case, please, let us know by filing a bug
report at http://bugzilla.gnome.org/.
Required tools:
===============
An extra set of tools is required if you wish to build GStreamer out of
CVS (using autogen.sh):
autoconf 2.52 or better
automake 1.5
gettext 0.11.5
libtool v1.4 or better
pkgconfig 0.9.0 or better (http://www.freedesktop.org/software/pkgconfig/)
Required libraries:
===================
The core GStreamer libraries. See the gstreamer/ module in GStreamer cvs, or
the version that corresponds to this plugin release.
Optional libraries:
===================
This file lists supporting libraries for which gst-plugins contains plugins,
as well as their minimum version. You can find the corresponding plugins in
ext/(library)
libdvdread (for the dvdsrc)
http://dvdnav.mplayerhq.hu/
(optional: libcss for encrypted DVDs)
libdvdnav (for the dvdnavsrc)
http://dvdnav.mplayerhq.hu/
(optional: libcss for encrypted DVDs)
>= 0.1.9
libgsm (for the gsm plugin)
http://kbs.cs.tu-berlin.de/~jutta/toast.html
sdl (for the sdl sink)
http://www.libsdl.org
dtsdec (for DTS audio decoding)
http://www.videolan.org/libdca.html
musepack (for musepack audio codec/format)
(http://www.musepack.net/)
nas (for the NAS sound server sink)
(http://radscan.com/nas.html)
libmms (for MMS protocol support)
(http://www.sf.net/projects/libmms)
libamrnb (for AMR-NB support)
(http://www.penguin.cz/~utx/amr)
libamrwb (for AMR-WB support)
(http://www.penguin.cz/~utx/amr)
libkate (for Kate support)
(http://libkate.googlecode.com/)
librtmp (for RTMP support)
(http://rtmpdump.mplayerhq.hu/)
Optional (debian) packages:
===========================
gtk-doc-tools 1.6 -- needed to build documentation
python-xml -- needed to build plugin documentation

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encoding_targetsdir = join_paths(get_option('datadir'),
'gstreamer-' + api_version, 'encoding-profiles')
encoding_targets = [
['file-extension', ['targets/file-extension/ogv.gep',
'targets/file-extension/oga.gep',
'targets/file-extension/mkv.gep',
'targets/file-extension/mp3.gep',
'targets/file-extension/webm.gep',
'targets/file-extension/flv.gep',
'targets/file-extension/mp4.gep',
'targets/file-extension/ts.gep',
'targets/file-extension/avi.gep',],
],
['online-services', ['targets/online-service/youtube.gep',]],
['device', ['targets/device/dvd.gep',]],
]
foreach path_targets : encoding_targets
dir = join_paths(encoding_targetsdir, path_targets.get(0))
etargets = path_targets.get(1)
install_data(sources: etargets, install_dir: dir)
endforeach

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[GStreamer Encoding Target]
name=dvd
category=device
description=Encoding target suitable for DVDs
[profile-dvd]
name=dvd
type=container
description[c]=This is an encoding profile usable for DVDs
format=video/mpeg, mpegversion=(int)2, systemstream=(boolean)true
[streamprofile-dvd-0]
parent=dvd
type=video
format=video/mpeg, mpegversion=(int)2, systemstream=(boolean)false
presence=0
pass=0
variableframerate=false
[streamprofile-dvd-1]
parent=dvd
type=audio
format=audio/mpeg, mpegversion=(int)1, layer=(int)2
presence=0

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[GStreamer Encoding Target]
name=avi
category=file-extension
description=Default target for files with a .avi extension
[profile-default]
name=default
type=container
description=Default profile for files with a .avi extension.
format=video/x-msvideo
[streamprofile-default-0]
parent=default
type=audio
format=audio/mpeg, mpegversion=(int)1, mpegaudioversion=(int)1, layer=(int)3
[streamprofile-default-1]
parent=default
type=video
format=video/mpeg, mpegversion=(int)4

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[GStreamer Encoding Target]
name=flv
category=file-extension
description=Default target for files with a .flv extension
[profile-default]
name=default
type=container
description=Default profile for files with a .flv extension.
format=video/x-flv
[streamprofile-default-0]
parent=default
type=audio
format=audio/mpeg,mpegversion=4
[streamprofile-default-1]
parent=default
type=audio
format=audio/mpeg, mpegversion=(int)1, mpegaudioversion=(int)1, layer=(int)3
[streamprofile-default-2]
parent=default
type=video
format=video/x-h264
preset=Profile YouTube
pass=0
[streamprofile-default-3]
parent=default
type=video
format=video/x-h264

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[GStreamer Encoding Target]
name=mkv;matroska;
category=file-extension
description=Default target for files with a .mkv extension
[profile-default]
name=default
description=Default profile for files with a .mkv extension. Audio stream can be either opus (default) or vorbis depending on what is available on the system. Video stream will be either in vp8 (default) or vp9.
type=container
format=video/x-matroska
[streamprofile-default-0]
parent=default
type=audio
format=audio/x-vorbis;audio/x-opus
[streamprofile-default-1]
parent=default
type=video
format=video/x-h264
preset=Quality Normal
pass=0
[streamprofile-default-2]
parent=default
type=video
format=video/x-h264
pass=0

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[GStreamer Encoding Target]
name=mp3
category=file-extension
description=Default target for files with a .mp3 extension
[profile-default]
name=default
type=container
description=Default profile for files with a .mp3 extension.
format=application/x-id3
[streamprofile-default-0]
parent=default
type=audio
format=audio/mpeg, mpegversion=(int)1, mpegaudioversion=(int)1, layer=(int)3

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[GStreamer Encoding Target]
name=mp4;mov
category=file-extension
description=Default target for files with a .mp4 and .mov extension
[profile-default]
name=default
type=container
description=Default profile for files with a .mp4 extension. Suitable for uploading to youtube.
format=video/quicktime
preset=Profile YouTube
[streamprofile-default-0]
parent=default
type=audio
format=audio/mpeg,mpegversion=4,base-profile=lc,rate={48000,96000},channels=2;audio/mpeg,mpegversion=4,base-profile=lc,rate={48000,96000}
restriction=audio/x-raw,channels=6,channel-mask=0x3f;audio/x-raw,channels=2
[streamprofile-default-1]
parent=default
type=video
format=video/x-h264
preset=Profile YouTube
pass=0
[streamprofile-default-2]
parent=default
type=audio
format=audio/mpeg,mpegversion=4
[streamprofile-default-3]
parent=default
type=video
format=video/x-h264

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[GStreamer Encoding Target]
name=oga
category=file-extension
description=Default target for files with a .ogg and friends extension
[profile-default]
name=default
description=Default target for files with a .ogg and friends extension
type=container
format=audio/ogg
[streamprofile-default-0]
parent=default
type=audio
format=audio/x-vorbis;audio/x-opus

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[GStreamer Encoding Target]
name=ogv;ogg
category=file-extension
description=Default target for files with a .ogg and friends extension
[profile-default]
name=default
description=Default target for files with a .ogg and friends extension
type=container
format=application/ogg
[streamprofile-default-0]
parent=default
type=audio
format=audio/x-vorbis;audio/x-opus
[streamprofile-default-1]
parent=default
type=video
format=video/x-theora
[streamprofile-default-2]
parent=default
type=video
format=video/x-vp8

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[GStreamer Encoding Target]
name=ts
category=file-extension
description=Default target for files with a .ts extension
[profile-default]
name=default
type=container
description=Default profile for files with a .ts extension. Suitable for streamming.
format=video/mpegts,systemstream=true,packetsize=188
[streamprofile-default-0]
parent=default
type=audio
format=audio/mpeg,mpegversion=4,base-profile=lc,rate={48000,96000},channels=2;audio/mpeg,mpegversion=4,base-profile=lc,rate={48000,96000}
restriction=audio/x-raw,channels=6,channel-mask=0x3f;audio/x-raw,channels=2
[streamprofile-default-1]
parent=default
type=video
format=video/x-h264
preset=Profile YouTube
pass=0
[streamprofile-default-2]
parent=default
type=audio
format=audio/mpeg,mpegversion=4
[streamprofile-default-3]
parent=default
type=video
format=video/x-h264

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[GStreamer Encoding Target]
name=webm
category=file-extension
description=Default target for files with a .webm extension
[profile-default]
name=default
description=Default profile for files with a .webm extension. Audio stream can be either vorbis (default) or opus depending on what is available on the system. Video stream will be either in vp8 (default) or vp9.
type=container
format=video/webm
[streamprofile-default-0]
parent=default
type=audio
format=audio/x-vorbis;audio/x-opus
[streamprofile-default-1]
parent=default
type=video
format=video/x-vp8;video/x-vp9
pass=0

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[GStreamer Encoding Target]
name=youtube;yt
category=online-service
description=Recommended encoding settings for YouTube
[profile-default]
name=default
type=container
description=Youtube recommended profile with automatic audio setting
format=video/quicktime
preset=Profile YouTube
[streamprofile-default-0]
parent=default
type=audio
format=audio/mpeg,mpegversion=4,base-profile=lc
restriction=audio/x-raw,channels=6,rate={48000,96000};audio/x-raw,channels=2,rate={48000,96000}
[streamprofile-default-1]
parent=default
type=video
format=video/x-h264,profile=high
preset=Profile YouTube
pass=0

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@GST_API_VERSION@

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---
short-description: GStreamer Bad Plugins API reference.
...
# GStreamer Bad Plugins

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# Adaptive Demux library

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c-index

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# Bad Audio library
This library should be linked to by getting cflags and libs from
gstreamer-bad-audio{{ gst_api_version.md }}.pc
> NOTE: This library API is considered *unstable*

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gi-index

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# Base classes from -bad
> NOTE: This library API is considered *unstable*

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gi-index

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# BaseCamerabinSrc Library
This library should be linked to by getting cflags and libs from
gstreamer-plugins-bad-{{ gst_api_version.md }}.pc and adding
-lgstbasecamerabinsrc-{{ gst_api_version.md }} to the library flags.
> NOTE: This library API is considered *unstable*

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gi-index

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# Bitstream parsing Library
This library should be linked to by getting cflags and libs from
gstreamer-plugins-bad-{{ gst_api_version.md }}.pc and adding
-lgstcodeparsers-{{ gst_api_version.md }} to the library flags.
> NOTE: This library API is considered *unstable*

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c-index

3
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# GstCodecs
> NOTE: This library API is considered *unstable*

1
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gi-index

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---
short-description: A library that contains a bin to insertally link filter-like elements.
...
# GstInsertBin
> NOTE: This library API is considered *unstable*

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gi-index

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# MPEG-TS helper library
This library should be linked to by getting cflags and libs from
gstreamer-plugins-bad-{{ gst_api_version.md }}.pc and adding
-lgstmpegts-{{ gst_api_version.md }} to the library flags.
> NOTE: This library API is considered *unstable*
## Purpose
The MPEG-TS helper library provides a collection of definitions, object,
enumerations and functions to assist with dealing with the base *MPEG 2
Transport Stream* (MPEG-TS) format (as defined by `ISO/IEC 13818-1` and `ITU-T
H.222.0`) and its derivates (`DVB`, `ATSC`, `SCTE`, `ARIB`, `Blu-ray`, `AVCHD`,
...).
This library provides helpers for dealing with:
* The various Section Information (SI) and Program-Specific Information (SI),
handled with the [GstMpegtsSection](GstMpegtsSection) object and related
functions.
* The various descriptors present in SI/PSI, handled with the
[GstMpegtsDescriptor](GstMpegtsDescriptor) object and related functions.
This library does not cover:
* Parsing MPEG-TS packets (PSI or PES) and extracting the sections. One can use
an existing demuxer/parser element for this, or parse the packets
themselves.
* Generate and multiplex MPEG-TS packets and sections. One can use an existing
muxer element for this.
Applications, or external elements, can interact with the existing MPEG-TS
elements via [messages](gst_message_new_mpegts_section) (to receive sections) or
[events](gst_mpegts_section_send_event) (to send sections).
## Specification and References
As much as possible, the information contained in this library is based on the
official Specification and/or References listed below:
### `MPEG-TS`
This is the base specification from which all variants are derived. It covers
the basic sections (for program signalling) and descriptors. All variants must
abide by this specification.
* `ISO/IEC 13818-1` and `ITU-T H.222.0`: *"Information technology – Generic
coding of moving pictures and associated audio information: Systems"*. The two
specifications are identical, the ITU one is more easily available (*nudge*).
### `SMPTE-RA` : *SMPTE Registration Authority*
The official registration authority for MPEG-TS. This is used for the base
[Registration Descriptor](gst_mpegts_descriptor_parse_registration) which
allows to unambiguously identify a stream when it is not specified in a standard
(yet).
* <http://smpte-ra.org/>
### `DVB` : *Digital Video Broadcasting*
This standards body covers the variant of MPEG-TS used in Europe, Oceania, and
most of Asia and Africa. The standards are actually published by the `ETSI`
(European Telecommunications Standards Institute).
* `ETSI EN 300 468`: *"Digital Video Broadcasting (DVB); Specification for
Service Information (SI) in DVB systems"*. Covers all the sections and
descriptors used in DVB variants.
* `ETSI EN 101 154`: *"Digital Video Broadcasting (DVB);Specification for the
use of Video and Audio Coding in Broadcast and Broadband
Applications"*. Provides more details about signalling/sectios for audio/video
codecs.
### `ATSC` : *Advanced Television Systems Committee*
This set of standards covers the variants of MPEG-TS used in North America.
* `ATSC A/53-3` : *"ATSC Digital Television Standard, Part 3 – Service Multiplex
and Transport Subsystem Characteristics"*. How ATSC extends the base MPEG-TS.
* `ATSC A/65` : *"ATSC Standard:Program and System Information Protocol for
Terrestrial Broadcast and Cable"*. Covers all sections and descriptors used in
ATSC 1.0 variants.
* `ATSC A/90` : *"ATSC Data Broadcast Standard"*. Extensions for data transfer
(i.e. DSM-CC).
* `ATSC A/107` : *"ATSC 2.0 Standard"*. Adds a few more descriptors.
* `ATSC Code Points Registry` : The list of stream types, decriptor types,
etc... used by ATSC standards.
### `SCTE` : *Society of Cable Telecommunications Engineers*
This set of standards evolved in parallel with ATSC in North-America. Most of it
has been merged into ATSC and other standards since.
* `ANSI/SCTE 35` : *"Digital Program Insertion Cueing Message for Cable"*
### `DSM-CC` : "Digital Storage Media - Command & Control"
This ISO standard is the base for asynchronously carrying "files" over mpeg-ts.
* `ISO/IEC 13818-6` : *"Information technology — Generic coding of moving
pictures and associated audio information — Part 6: Extensions for DSM-CC"*.

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gi-index

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# Opencv Library
This library should be linked to by getting cflags and libs from
gstreamer-plugins-bad-{{ gst_api_version.md }}.pc and adding
-lgstopencv-{{ gst_api_version.md }} to the library flags.
> NOTE: This library API is considered *unstable*

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c-index

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# Play Library
> NOTE: This library API is considered *unstable*

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gi-index

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# Player Library
> NOTE: This library API is considered *unstable*

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gi-index

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# Useful elements
> NOTE: This library API is considered *unstable*

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gi-index

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# GstTranscoder
High level API to transcode streams
This library should be linked to by getting cflags and libs from
gstreamer-transcoder-{{ gst_api_version.md }}
> NOTE: This library API is considered *unstable*

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gi-index

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# Video helpers and baseclasses
> NOTE: This library API is considered *unstable*

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gi-index

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# Vulkan Wayland Library
This library should be linked to by getting cflags and libs from
gstreamer-vulkan-wayland-{{ gst_api_version.md }}
> NOTE: This library API is considered *unstable*

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gi-index

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# Vulkan XCB Library
This library should be linked to by getting cflags and libs from
gstreamer-vulkan-{{ gst_api_version.md }}
> NOTE: This library API is considered *unstable*

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gi-index

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# Vulkan Library
This library should be linked to by getting cflags and libs from
gstreamer-vulkan-{{ gst_api_version.md }}
> NOTE: This library API is considered *unstable*

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gi-index

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# WebRTC Library
This library should be linked to by getting cflags and libs from
gstreamer-webrtc-{{ gst_api_version.md }}
> NOTE: This library API is considered *unstable*

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gi-index

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build_hotdoc = false
if meson.is_cross_build()
if get_option('doc').enabled()
error('Documentation enabled but building the doc while cross building is not supported yet.')
endif
message('Documentation not built as building it while cross building is not supported yet.')
subdir_done()
endif
required_hotdoc_extensions = ['gi-extension', 'c-extension', 'gst-extension']
if gst_dep.type_name() == 'internal'
gst_proj = subproject('gstreamer')
plugins_cache_generator = gst_proj.get_variable('plugins_cache_generator')
else
plugins_cache_generator = find_program(join_paths(gst_dep.get_pkgconfig_variable('libexecdir'), 'gstreamer-' + api_version, 'gst-plugins-doc-cache-generator'),
required: false)
endif
plugins_cache = join_paths(meson.current_source_dir(), 'plugins', 'gst_plugins_cache.json')
if plugins.length() == 0
message('All bad plugins have been disabled')
elif plugins_cache_generator.found()
plugins_doc_dep = custom_target('bad-plugins-doc-cache',
command: [plugins_cache_generator, plugins_cache, '@OUTPUT@', '@INPUT@'],
input: plugins,
output: 'gst_plugins_cache.json',
build_always_stale: true,
)
else
warning('GStreamer plugin inspector for documentation not found, can\'t update the cache')
endif
hotdoc_p = find_program('hotdoc', required: get_option('doc'))
if not hotdoc_p.found()
message('Hotdoc not found, not building the documentation')
subdir_done()
endif
hotdoc_req = '>= 0.11.0'
hotdoc_version = run_command(hotdoc_p, '--version').stdout()
if not hotdoc_version.version_compare(hotdoc_req)
if get_option('doc').enabled()
error('Hotdoc version @0@ not found, got @1@'.format(hotdoc_req, hotdoc_version))
else
message('Hotdoc version @0@ not found, got @1@'.format(hotdoc_req, hotdoc_version))
subdir_done()
endif
endif
hotdoc = import('hotdoc')
foreach extension: required_hotdoc_extensions
if not hotdoc.has_extensions(extension)
if get_option('doc').enabled()
error('Documentation enabled but @0@ missing'.format(extension))
endif
message('@0@ extensions not found, not building documentation requiring it'.format(extension))
endif
endforeach
if not build_gir
if get_option('doc').enabled()
error('Documentation enabled but introspection not built.')
endif
message('Introspection not built, won\'t build documentation requiring it')
subdir_done()
endif
build_hotdoc = true
docconf = configuration_data()
docconf.set('GST_API_VERSION', api_version)
configure_file(input : 'gst_api_version.in',
output : 'gst_api_version.md',
configuration : docconf)
root_rel = '..'
excludes = []
foreach f: [
'gst/frei0r/frei0r.h',
'gst/mxf/mxful.c',
'gst-libs/gst/*/*-private.h',
'gst-libs/gst/codecparsers/nalutils.h',
'ext/closedcaption/bcd.h',
'ext/closedcaption/bit_slicer.[ch]',
'ext/closedcaption/decoder.[ch]',
'ext/closedcaption/macros.h',
'ext/closedcaption/misc.h',
'ext/closedcaption/raw_decoder.[ch]',
'ext/closedcaption/sampling_par.[ch]',
'ext/closedcaption/sliced.[ch]',
'ext/*/*.h',
'sys/*/*.h',
'gst/*/*.h',
'gst-libs/gst/*/*-prelude.h',
'gst-libs/gst/vulkan/vulkan_fwd.h'
]
excludes += [join_paths(meson.current_source_dir(), root_rel, f)]
endforeach
libs = []
if build_gir
libs = [
{'name': 'mpegts', 'gir': mpegts_gir, 'lib': gstmpegts_dep},
{'name': 'play', 'gir': play_gir, 'lib': gstplay_dep},
{'name': 'player', 'gir': player_gir, 'lib': gstplayer_dep},
{'name': 'insertbin', 'gir': insertbin_gir, 'lib': gstinsertbin_dep},
{'name': 'codecparsers', 'lib': gstcodecparsers_dep},
{'name': 'adaptivedemux', 'lib': gstadaptivedemux_dep},
{'name': 'basecamerabinsrc', 'gir': basecamerabin_gir, 'lib': gstbasecamerabin_dep},
{'name': 'webrtc', 'gir': webrtc_gir, 'lib': gstwebrtc_dep, 'suffix': 'lib'},
{'name': 'audio', 'gir': audio_gir, 'lib': gstbadaudio_dep, 'prefix': 'bad-'},
{'name': 'transcoder', 'gir': transcoder_gir, 'lib': gst_transcoder_dep},
{'name': 'codecs', 'gir': codecs_gir, 'lib': gstcodecs_dep},
]
if gstopencv_dep.found()
libs += [
{'name': 'opencv', 'lib': gstopencv_dep, 'c_source_patterns': ['*.h', '*.cpp'], 'extra_c_flags': ['-x c++']},
]
endif
if gstvulkan_dep.found()
libs += [
{'name': 'vulkan', 'gir': vulkan_gir, 'lib': gstvulkan_dep, 'suffix': 'lib'},
]
if enabled_vulkan_winsys.contains('xcb')
libs += [
{'name': 'vulkan-xcb', 'gir': vulkan_xcb_gir, 'lib': gstvulkanxcb_dep, 'extra_sources' : [
join_paths(root_rel, 'gst-libs/gst/vulkan/xcb/gstvkdisplay_xcb.[ch]'),
]},
]
endif
if enabled_vulkan_winsys.contains('wayland')
libs += [
{'name': 'vulkan-wayland', 'gir': vulkan_wayland_gir, 'lib': gstvulkanwayland_dep, 'extra_sources' : [
join_paths(root_rel, 'gst-libs/gst/vulkan/wayland/gstvkdisplay_wayland.[ch]'),
]},
]
endif
endif
endif
has_gi_extension = hotdoc.has_extensions('gi-extension')
has_c_extension = hotdoc.has_extensions('c-extension')
libs_doc = []
foreach lib_def: libs
name = lib_def['name']
lib = lib_def['lib']
extra_sources = lib_def.get('extra_sources', [])
c_source_patterns = lib_def.get('c_source_patterns', ['*.[hc]'])
c_sources = []
foreach pattern: c_source_patterns
c_sources += join_paths(root_rel, 'gst-libs/gst', name, pattern)
endforeach
c_sources += extra_sources
if lib_def.has_key('gir')
if has_gi_extension
gir = lib_def['gir']
prefix = lib_def.get('prefix', '')
suffix = lib_def.get('suffix', '')
libs_doc += [hotdoc.generate_doc(prefix + name + suffix,
project_version: api_version,
gi_c_sources: c_sources,
gi_sources: gir[0].full_path(),
gi_c_source_filters: excludes,
sitemap: join_paths('libs', name, 'sitemap.txt'),
index: join_paths('libs/', name, 'index.md'),
gi_index: join_paths('libs/', name, 'index.md'),
gi_smart_index: true,
gi_order_generated_subpages: true,
dependencies: [lib, gir],
c_flags: '-DGST_USE_UNSTABLE_API',
install: false,
)]
endif
else
if has_c_extension
libs_doc += [hotdoc.generate_doc('gst-plugins-bad-' + name,
sitemap: join_paths('libs', name, 'sitemap.txt'),
index: join_paths('libs', name, 'index.md'),
project_version: api_version,
c_sources: c_sources,
c_source_filters: excludes,
c_index: join_paths('libs', name, 'index.md'),
c_smart_index: true,
c_order_generated_subpages: true,
extra_c_flags: ['-DGST_USE_UNSTABLE_API'] + lib_def.get('extra_c_flags', []),
dependencies: lib,
install: false,
)]
endif
endif
endforeach
list_plugin_res = run_command(python3, '-c',
'''
import sys
import json
with open("@0@") as f:
print(':'.join(json.load(f).keys()), end='')
'''.format(plugins_cache))
assert(list_plugin_res.returncode() == 0,
'Could not list plugins from @0@'.format(plugins_cache))
plugins_doc = []
foreach plugin_name: list_plugin_res.stdout().split(':')
plugins_doc += [hotdoc.generate_doc(plugin_name,
project_version: api_version,
sitemap: 'plugins/sitemap.txt',
index: 'plugins/index.md',
c_flags: '-DGST_USE_UNSTABLE_API',
gst_index: 'plugins/index.md',
gst_smart_index: true,
gst_c_sources: [
join_paths(root_rel, 'sys/*/*.[ch]'),
join_paths(root_rel, 'sys/*/*.cpp'),
join_paths(root_rel, 'sys/*/*.cc'),
join_paths(root_rel, 'sys/*/*.hh'),
join_paths(root_rel, 'ext/*/*.[ch]'),
join_paths(root_rel, 'ext/*/*.cpp'),
join_paths(root_rel, 'ext/*/*.cc'),
join_paths(root_rel, 'ext/*/*.hh'),
join_paths(root_rel, 'gst/*/*.[ch]'),
join_paths(root_rel, 'gst/rtmp2/*/*.[ch]'),
],
dependencies: [gst_dep, plugins],
install: false,
disable_incremental_build: true,
gst_cache_file: plugins_cache,
gst_c_source_filters: excludes,
gst_order_generated_subpages: true,
gst_plugin_name: plugin_name,
include_paths: join_paths(meson.current_source_dir(), '..'),
)]
endforeach

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<plugin>
<name>rist</name>
<description>Source and Sink for RIST TR-06-1 streaming specification</description>
<filename>../../gst/rist/.libs/libgstrist.so</filename>
<basename>libgstrist.so</basename>
<version>1.15.2.1</version>
<license>LGPL</license>
<source>gst-plugins-bad</source>
<package>GStreamer Bad Plug-ins git</package>
<origin>Unknown package origin</origin>
<elements>
<element>
<name>ristrtxreceive</name>
<longname>RIST Retransmission receiver</longname>
<class>Codec</class>
<description>Receive retransmitted RIST packets according to VSF TR-06-1</description>
<author>Nicolas Dufresne &lt;nicolas.dufresne@collabora.com&gt;</author>
<pads>
<caps>
<name>sink</name>
<direction>sink</direction>
<presence>always</presence>
<details>application/x-rtp</details>
</caps>
<caps>
<name>src</name>
<direction>source</direction>
<presence>always</presence>
<details>application/x-rtp</details>
</caps>
</pads>
</element>
<element>
<name>ristrtxsend</name>
<longname>RIST Retransmission Sender</longname>
<class>Codec</class>
<description>Retransmit RTP packets when needed, according to VSF TR-06-1</description>
<author>Nicolas Dufresne &lt;nicolas.dufresne@collabora.com&gt;</author>
<pads>
<caps>
<name>sink</name>
<direction>sink</direction>
<presence>always</presence>
<details>application/x-rtp, clock-rate=(int)[ 1, 2147483647 ]</details>
</caps>
<caps>
<name>src</name>
<direction>source</direction>
<presence>always</presence>
<details>application/x-rtp</details>
</caps>
</pads>
</element>
<element>
<name>ristsink</name>
<longname>RIST Sink</longname>
<class>Source/Network</class>
<description>Sink that implements RIST TR-06-1 streaming specification</description>
<author>Nicolas Dufresne &lt;nicolas.dufresne@collabora.com</author>
<pads>
<caps>
<name>sink</name>
<direction>sink</direction>
<presence>always</presence>
<details>application/x-rtp</details>
</caps>
</pads>
</element>
<element>
<name>ristsrc</name>
<longname>RIST Source</longname>
<class>Source/Network</class>
<description>Source that implements RIST TR-06-1 streaming specification</description>
<author>Nicolas Dufresne &lt;nicolas.dufresne@collabora.com</author>
<pads>
<caps>
<name>src</name>
<direction>source</direction>
<presence>always</presence>
<details>application/x-rtp</details>
</caps>
</pads>
</element>
</elements>
</plugin>

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<plugin>
<name>sctp</name>
<description>SCTP encoder/decoder plugin</description>
<filename>../../ext/sctp/.libs/libgstsctp.so</filename>
<basename>libgstsctp.so</basename>
<version>1.17.0.1</version>
<license>BSD</license>
<source>gst-plugins-bad</source>
<package>GStreamer Bad Plug-ins git</package>
<origin>Unknown package origin</origin>
<elements>
<element>
<name>sctpdec</name>
<longname>SCTP Decoder</longname>
<class>Decoder/Network/SCTP</class>
<description>Decodes packets with SCTP</description>
<author>George Kiagiadakis &lt;george.kiagiadakis@collabora.com&gt;</author>
<pads>
<caps>
<name>sink</name>
<direction>sink</direction>
<presence>always</presence>
<details>application/x-sctp</details>
</caps>
<caps>
<name>src_%u</name>
<direction>source</direction>
<presence>sometimes</presence>
<details>ANY</details>
</caps>
</pads>
</element>
<element>
<name>sctpenc</name>
<longname>SCTP Encoder</longname>
<class>Encoder/Network/SCTP</class>
<description>Encodes packets with SCTP</description>
<author>George Kiagiadakis &lt;george.kiagiadakis@collabora.com&gt;</author>
<pads>
<caps>
<name>sink_%u</name>
<direction>sink</direction>
<presence>request</presence>
<details>ANY</details>
</caps>
<caps>
<name>src</name>
<direction>source</direction>
<presence>always</presence>
<details>application/x-sctp</details>
</caps>
</pads>
</element>
</elements>
</plugin>

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gst-index

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/

27
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When porting a plugin start with 0.8 CVS head, not the old code in this module. There are many bugfixes which have gone into 0.8 which you want to keep.
List of ported plugins (update when you commit a ported plugin):
libmms (alima)
wavpack (alima)
musepack (alima)
ivorbis (alima)
gsmdec (alima)
sdl (alima)
speed (fcarvalho)
gsmenc (fcarvalho)
faac (fcarvalho)
wavenc (fcarvalho)
effectv (wim)
mad (wim)
videofilter (wim)
aalib (wim)
libcaca (zeeshan)
law (wim)
shout2 (zaheer) - not fully tested
esdsink (arwed)
osssink is partially done in the threaded branch (wim)
- Remember that some plugins are already ported and now in the gst-plugins-base module.
When you have ported a plugin remember to copy the relevant parts from configure.ac.orig into configure.ac and re-enable it in the Makefile.am files.

3
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index.md
gst-plugins-bad-plugins-doc.json
gst-plugins-bad-libs-doc.json

54
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/*
* GStreamer gstreamer-aes
*
* Copyright, 2021 Nice, Contact: Rabindra Harlalka <Rabindra.Harlalka@nice.com>
*
* gstaes.c
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstaesdec.h"
#include "gstaesenc.h"
/**
* SECTION:plugin-aes
*
* AES encryption and decryption
*
* See also: @aesenc, @aesdec
* Since: 1.20
*/
static gboolean
plugin_init (GstPlugin * plugin)
{
gboolean success = GST_ELEMENT_REGISTER (aesenc, plugin);
success = GST_ELEMENT_REGISTER (aesdec, plugin) || success;
return success;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
aes,
"AES encryption/decryption plugin",
plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);

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/*
* GStreamer gstreamer-aesdec
*
* Copyright, LCC (C) 2015 RidgeRun, LCC <carsten.behling@ridgerun.com>
* Copyright, LCC (C) 2016 RidgeRun, LCC <jose.jimenez@ridgerun.com>
* Copyright (C) 2020 Nice, Contact: Rabindra Harlalka <Rabindra.Harlalka@nice.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Alternatively, the contents of this file may be used under the
* GNU Lesser General Public License Version 2.1 (the "LGPL"), in
* which case the following provisions apply instead of the ones
* mentioned above:
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1335, USA.
*/
/**
* SECTION:element-aesdec
*
* AES decryption
*
* ## Example
*
* |[
* echo "This is an AES crypto test ... " > plain.txt && \
* gst-launch-1.0 filesrc location=plain.txt ! \
* aesenc key=1f9423681beb9a79215820f6bda73d0f iv=e9aa8e834d8d70b7e0d254ff670dd718 ! \
* aesdec key=1f9423681beb9a79215820f6bda73d0f iv=e9aa8e834d8d70b7e0d254ff670dd718 ! \
* filesink location=dec.txt && \
* cat dec.txt
*
* ]|
*
* Since: 1.20
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <gst/gst.h>
#include <gst/base/gstbasetransform.h>
#include <string.h>
#include "gstaeshelper.h"
#include "gstaesdec.h"
GST_DEBUG_CATEGORY_STATIC (gst_aes_dec_debug);
#define GST_CAT_DEFAULT gst_aes_dec_debug
G_DEFINE_TYPE_WITH_CODE (GstAesDec, gst_aes_dec, GST_TYPE_BASE_TRANSFORM,
GST_DEBUG_CATEGORY_INIT (gst_aes_dec_debug, "aesdec", 0,
"aesdec AES decryption element")
);
GST_ELEMENT_REGISTER_DEFINE (aesdec, "aesdec", GST_RANK_PRIMARY,
GST_TYPE_AES_DEC);
static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("ANY")
);
static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("ANY")
);
static void gst_aes_dec_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_aes_dec_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstFlowReturn gst_aes_dec_transform (GstBaseTransform * base,
GstBuffer * inbuf, GstBuffer * outbuf);
static GstFlowReturn gst_aes_dec_prepare_output_buffer (GstBaseTransform * base,
GstBuffer * inbuf, GstBuffer ** outbuf);
static gboolean
gst_aes_dec_sink_event (GstBaseTransform * base, GstEvent * event);
static gboolean gst_aes_dec_start (GstBaseTransform * base);
static gboolean gst_aes_dec_stop (GstBaseTransform * base);
/* aes_dec helper functions */
static gboolean gst_aes_dec_openssl_init (GstAesDec * filter);
static gboolean gst_aes_dec_init_cipher (GstAesDec * filter);
static void gst_aes_dec_finalize (GObject * object);
/* GObject vmethod implementations */
/* initialize class */
static void
gst_aes_dec_class_init (GstAesDecClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
gobject_class->set_property = gst_aes_dec_set_property;
gobject_class->get_property = gst_aes_dec_get_property;
gobject_class->finalize = gst_aes_dec_finalize;
gst_type_mark_as_plugin_api (GST_TYPE_AES_CIPHER, 0);
/**
* GstAesDec:cipher
*
* AES cipher mode (key length and mode)
* Currently, 128 and 256 bit keys are supported,
* in "cipher block chaining" (CBC) mode
*
* Since: 1.20
*/
g_object_class_install_property (gobject_class, PROP_CIPHER,
g_param_spec_enum ("cipher",
"Cipher",
"cipher mode",
GST_TYPE_AES_CIPHER, GST_AES_DEFAULT_CIPHER_MODE,
(G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_READY)));
/**
* GstAesDec:serialize-iv
*
* If true, read initialization vector from first 16 bytes of first buffer
*
* Since: 1.20
*/
g_object_class_install_property (gobject_class, PROP_SERIALIZE_IV,
g_param_spec_boolean ("serialize-iv", "Serialize IV",
"Read initialization vector from first 16 bytes of first buffer",
GST_AES_DEFAULT_SERIALIZE_IV,
G_PARAM_READWRITE | GST_PARAM_MUTABLE_READY));
/**
* GstAesDec:per-buffer-padding
*
* If true, each buffer will be padded using PKCS7 padding
* If false, only the final buffer in the stream will be padded
* (by OpenSSL) using PKCS7
*
* Since: 1.20
*/
g_object_class_install_property (gobject_class, PROP_PER_BUFFER_PADDING,
g_param_spec_boolean ("per-buffer-padding", "Per buffer padding",
"If true, pad each buffer using PKCS7 padding scheme. Otherwise, only"
"pad final buffer",
GST_AES_PER_BUFFER_PADDING_DEFAULT,
G_PARAM_READWRITE | GST_PARAM_MUTABLE_READY));
/**
* GstAesDec:key
*
* AES encryption key (hexadecimal)
*
* Since: 1.20
*/
g_object_class_install_property (gobject_class, PROP_KEY,
g_param_spec_string ("key", "Key",
"AES encryption key (in hexadecimal). Length (in bytes) must be equivalent to "
"the number of bits in the key length : "
"16 bytes for AES 128 and 32 bytes for AES 256",
(gchar *) GST_AES_DEFAULT_KEY,
G_PARAM_READWRITE | GST_PARAM_MUTABLE_READY));
/**
* GstAesDec:iv
*
* AES encryption initialization vector (hexadecimal)
*
* Since: 1.20
*/
g_object_class_install_property (gobject_class, PROP_IV,
g_param_spec_string ("iv", "Iv",
"AES encryption initialization vector (in hexadecimal). "
"Length must equal AES block length (16 bytes)",
(gchar *) GST_AES_DEFAULT_IV,
G_PARAM_READWRITE | GST_PARAM_MUTABLE_READY));
gst_element_class_set_details_simple (gstelement_class,
"aesdec",
"Generic/Filter",
"AES buffer decryption",
"Rabindra Harlalka <Rabindra.Harlalka@nice.com>");
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&src_template));
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&sink_template));
GST_BASE_TRANSFORM_CLASS (klass)->transform =
GST_DEBUG_FUNCPTR (gst_aes_dec_transform);
GST_BASE_TRANSFORM_CLASS (klass)->prepare_output_buffer =
GST_DEBUG_FUNCPTR (gst_aes_dec_prepare_output_buffer);
GST_BASE_TRANSFORM_CLASS (klass)->start =
GST_DEBUG_FUNCPTR (gst_aes_dec_start);
GST_BASE_TRANSFORM_CLASS (klass)->sink_event =
GST_DEBUG_FUNCPTR (gst_aes_dec_sink_event);
GST_BASE_TRANSFORM_CLASS (klass)->stop = GST_DEBUG_FUNCPTR (gst_aes_dec_stop);
}
/* Initialize element
*/
static void
gst_aes_dec_init (GstAesDec * filter)
{
GST_INFO_OBJECT (filter, "Initializing plugin");
filter->cipher = GST_AES_DEFAULT_CIPHER_MODE;
filter->awaiting_first_buffer = TRUE;
filter->per_buffer_padding = GST_AES_PER_BUFFER_PADDING_DEFAULT;
g_mutex_init (&filter->decoder_lock);
}
static void
gst_aes_dec_finalize (GObject * object)
{
GstAesDec *filter = GST_AES_DEC (object);
g_mutex_clear (&filter->decoder_lock);
G_OBJECT_CLASS (gst_aes_dec_parent_class)->finalize (object);
}
static void
gst_aes_dec_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstAesDec *filter = GST_AES_DEC (object);
g_mutex_lock (&filter->decoder_lock);
/* no property may be set after first output buffer is prepared */
if (filter->locked_properties) {
GST_WARNING_OBJECT (filter,
"Properties cannot be set once buffers begin flowing in element. Ignored");
goto cleanup;
}
switch (prop_id) {
case PROP_CIPHER:
filter->cipher = g_value_get_enum (value);
filter->evp_cipher =
EVP_get_cipherbyname (gst_aes_cipher_enum_to_string (filter->cipher));
GST_DEBUG_OBJECT (filter, "cipher: %s",
gst_aes_cipher_enum_to_string (filter->cipher));
break;
case PROP_SERIALIZE_IV:
filter->serialize_iv = g_value_get_boolean (value);
GST_DEBUG_OBJECT (filter, "serialize iv: %s",
filter->serialize_iv ? "TRUE" : "FALSE");
break;
case PROP_PER_BUFFER_PADDING:
filter->per_buffer_padding = g_value_get_boolean (value);
GST_DEBUG_OBJECT (filter, "Per buffer padding: %s",
filter->per_buffer_padding ? "TRUE" : "FALSE");
break;
case PROP_KEY:
{
guint hex_len = gst_aes_hexstring2bytearray (GST_ELEMENT (filter),
g_value_get_string (value), filter->key);
if (!hex_len) {
GST_ERROR_OBJECT (filter, "invalid key");
goto cleanup;
}
GST_DEBUG_OBJECT (filter, "key: %s", g_value_get_string (value));
}
break;
case PROP_IV:
{
gchar iv_string[2 * GST_AES_BLOCK_SIZE + 1];
guint hex_len = gst_aes_hexstring2bytearray (GST_ELEMENT (filter),
g_value_get_string (value), filter->iv);
if (hex_len != GST_AES_BLOCK_SIZE) {
GST_ERROR_OBJECT (filter, "invalid initialization vector");
goto cleanup;
}
GST_DEBUG_OBJECT (filter, "iv: %s",
gst_aes_bytearray2hexstring (filter->iv, iv_string,
GST_AES_BLOCK_SIZE));
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
cleanup:
g_mutex_unlock (&filter->decoder_lock);
}
static void
gst_aes_dec_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstAesDec *filter = GST_AES_DEC (object);
switch (prop_id) {
case PROP_CIPHER:
g_value_set_enum (value, filter->cipher);
break;
case PROP_SERIALIZE_IV:
g_value_set_boolean (value, filter->serialize_iv);
break;
case PROP_PER_BUFFER_PADDING:
g_value_set_boolean (value, filter->per_buffer_padding);
break;
case PROP_KEY:
g_value_set_string (value, (gchar *) filter->key);
break;
case PROP_IV:
g_value_set_string (value, (gchar *) filter->iv);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
gst_aes_dec_sink_event (GstBaseTransform * base, GstEvent * event)
{
GstAesDec *filter = GST_AES_DEC (base);
g_mutex_lock (&filter->decoder_lock);
if (GST_EVENT_TYPE (event) == GST_EVENT_EOS) {
GST_DEBUG_OBJECT (filter, "Received EOS on sink pad");
if (!filter->per_buffer_padding && !filter->awaiting_first_buffer) {
GstBuffer *outbuf = NULL;
gint len;
GstMapInfo outmap;
outbuf = gst_buffer_new_allocate (NULL, EVP_MAX_BLOCK_LENGTH, NULL);
if (outbuf == NULL) {
GST_DEBUG_OBJECT (filter,
"Failed to allocate a new buffer of length %d",
EVP_MAX_BLOCK_LENGTH);
goto buffer_fail;
}
if (!gst_buffer_map (outbuf, &outmap, GST_MAP_WRITE)) {
GST_DEBUG_OBJECT (filter,
"gst_buffer_map on outbuf failed for final buffer.");
gst_buffer_unref (outbuf);
goto buffer_fail;
}
if (1 != EVP_CipherFinal_ex (filter->evp_ctx, outmap.data, &len)) {
GST_DEBUG_OBJECT (filter, "Could not finalize openssl encryption");
gst_buffer_unmap (outbuf, &outmap);
gst_buffer_unref (outbuf);
goto cipher_fail;
}
if (len == 0) {
GST_DEBUG_OBJECT (filter, "Not pushing final buffer as length is 0");
gst_buffer_unmap (outbuf, &outmap);
gst_buffer_unref (outbuf);
goto out;
}
GST_DEBUG_OBJECT (filter, "Pushing final buffer of length: %d", len);
gst_buffer_unmap (outbuf, &outmap);
gst_buffer_set_size (outbuf, len);
if (gst_pad_push (base->srcpad, outbuf) != GST_FLOW_OK) {
GST_DEBUG_OBJECT (filter, "Failed to push the final buffer");
goto push_fail;
}
} else {
GST_DEBUG_OBJECT (filter,
"Not pushing final buffer as we didn't have any input");
}
}
out:
g_mutex_unlock (&filter->decoder_lock);
return GST_BASE_TRANSFORM_CLASS (gst_aes_dec_parent_class)->sink_event (base,
event);
/* ERROR */
buffer_fail:
GST_ELEMENT_ERROR (filter, RESOURCE, FAILED, (NULL),
("Failed to allocate or map buffer for writing"));
g_mutex_unlock (&filter->decoder_lock);
return FALSE;
cipher_fail:
GST_ELEMENT_ERROR (filter, STREAM, FAILED, ("Cipher finalization failed."),
("Error while finalizing the stream"));
g_mutex_unlock (&filter->decoder_lock);
return FALSE;
push_fail:
GST_ELEMENT_ERROR (filter, CORE, PAD, (NULL),
("Failed to push the final buffer"));
g_mutex_unlock (&filter->decoder_lock);
return FALSE;
}
/* GstBaseTransform vmethod implementations */
static GstFlowReturn
gst_aes_dec_transform (GstBaseTransform * base,
GstBuffer * inbuf, GstBuffer * outbuf)
{
GstAesDec *filter = GST_AES_DEC (base);
GstFlowReturn ret = GST_FLOW_ERROR;
GstMapInfo inmap, outmap;
guchar *ciphertext;
gint ciphertext_len;
guchar *plaintext;
gint plaintext_len;
guint padding = 0;
if (!gst_buffer_map (inbuf, &inmap, GST_MAP_READ)) {
GST_ELEMENT_ERROR (filter, RESOURCE, FAILED, (NULL),
("Failed to map buffer for reading"));
goto cleanup;
}
if (!gst_buffer_map (outbuf, &outmap, GST_MAP_WRITE)) {
gst_buffer_unmap (inbuf, &inmap);
GST_ELEMENT_ERROR (filter, RESOURCE, FAILED, (NULL),
("Failed to map buffer for writing"));
goto cleanup;
}
/* DECRYPTING */
ciphertext = inmap.data;
ciphertext_len = gst_buffer_get_size (inbuf);
if (filter->awaiting_first_buffer) {
if (filter->serialize_iv) {
gchar iv_string[2 * GST_AES_BLOCK_SIZE + 1];
if (ciphertext_len < GST_AES_BLOCK_SIZE) {
GST_ELEMENT_ERROR (filter, RESOURCE, FAILED, (NULL),
("Cipher text too short"));
goto cleanup;
}
memcpy (filter->iv, ciphertext, GST_AES_BLOCK_SIZE);
GST_DEBUG_OBJECT (filter, "read serialized iv: %s",
gst_aes_bytearray2hexstring (filter->iv, iv_string,
GST_AES_BLOCK_SIZE));
ciphertext += GST_AES_BLOCK_SIZE;
ciphertext_len -= GST_AES_BLOCK_SIZE;
}
if (!gst_aes_dec_init_cipher (filter)) {
GST_ELEMENT_ERROR (filter, RESOURCE, FAILED, (NULL),
("Failed to initialize cipher"));
goto cleanup;
}
}
plaintext = outmap.data;
if (!EVP_CipherUpdate (filter->evp_ctx, plaintext,
&plaintext_len, ciphertext, ciphertext_len)) {
GST_ELEMENT_ERROR (filter, STREAM, FAILED, ("Cipher update failed."),
("Error while updating openssl cipher"));
goto cleanup;
} else {
if (filter->per_buffer_padding) {
gint k;
/* sanity check on padding value */
padding = plaintext[plaintext_len - 1];
if (padding == 0 || padding > GST_AES_BLOCK_SIZE) {
GST_ELEMENT_ERROR (filter, STREAM, FAILED, ("Corrupt cipher text."),
("Illegal PKCS7 padding value %d", padding));
goto cleanup;
}
for (k = 1; k < padding; ++k) {
if (plaintext[plaintext_len - 1 - k] != padding) {
GST_ELEMENT_ERROR (filter, STREAM, FAILED, ("Corrupt cipher text."),
("PKCS7 padding values must all be equal"));
goto cleanup;
}
}
/* remove padding (final block padding) */
plaintext_len -= padding;
}
if (plaintext_len > 2 * GST_AES_BLOCK_SIZE)
GST_MEMDUMP ("First 32 bytes of plain text", plaintext,
2 * GST_AES_BLOCK_SIZE);
}
gst_buffer_unmap (inbuf, &inmap);
gst_buffer_unmap (outbuf, &outmap);
GST_LOG_OBJECT (filter,
"Ciphertext len: %d, Plaintext len: %d, Padding: %d",
ciphertext_len, plaintext_len, padding);
gst_buffer_set_size (outbuf, plaintext_len);
ret = GST_FLOW_OK;
cleanup:
filter->awaiting_first_buffer = FALSE;
return ret;
}
static GstFlowReturn
gst_aes_dec_prepare_output_buffer (GstBaseTransform * base,
GstBuffer * inbuf, GstBuffer ** outbuf)
{
GstAesDec *filter = GST_AES_DEC (base);
GstBaseTransformClass *bclass = GST_BASE_TRANSFORM_GET_CLASS (base);
guint out_size;
g_mutex_lock (&filter->decoder_lock);
filter->locked_properties = TRUE;
/* we need extra space at end of output buffer
* when we let OpenSSL handle PKCS7 padding */
out_size = (gint) gst_buffer_get_size (inbuf) +
(!filter->per_buffer_padding ? GST_AES_BLOCK_SIZE : 0);
/* Since serialized IV is stripped from first buffer,
* reduce output buffer size by GST_AES_BLOCK_SIZE in this case */
if (filter->serialize_iv && filter->awaiting_first_buffer) {
g_assert (gst_buffer_get_size (inbuf) > GST_AES_BLOCK_SIZE);
out_size -= GST_AES_BLOCK_SIZE;
}
g_mutex_unlock (&filter->decoder_lock);
*outbuf = gst_buffer_new_allocate (NULL, out_size, NULL);
GST_LOG_OBJECT (filter,
"Input buffer size %d,\nAllocating output buffer size: %d",
(gint) gst_buffer_get_size (inbuf), out_size);
bclass->copy_metadata (base, inbuf, *outbuf);
return GST_FLOW_OK;
}
static gboolean
gst_aes_dec_start (GstBaseTransform * base)
{
GstAesDec *filter = GST_AES_DEC (base);
GST_INFO_OBJECT (filter, "Starting");
if (!gst_aes_dec_openssl_init (filter)) {
GST_ERROR_OBJECT (filter, "OpenSSL initialization failed");
return FALSE;
}
if (!filter->serialize_iv) {
if (!gst_aes_dec_init_cipher (filter))
return FALSE;
}
GST_INFO_OBJECT (filter, "Start successful");
return TRUE;
}
static gboolean
gst_aes_dec_init_cipher (GstAesDec * filter)
{
if (!EVP_CipherInit_ex (filter->evp_ctx, filter->evp_cipher, NULL,
filter->key, filter->iv, FALSE)) {
GST_ERROR_OBJECT (filter, "Could not initialize openssl cipher");
return FALSE;
}
if (filter->per_buffer_padding) {
if (!EVP_CIPHER_CTX_set_padding (filter->evp_ctx, 0)) {
GST_ERROR_OBJECT (filter, "Could not set padding");
return FALSE;
}
}
return TRUE;
}
static gboolean
gst_aes_dec_stop (GstBaseTransform * base)
{
GstAesDec *filter = GST_AES_DEC (base);
GST_INFO_OBJECT (filter, "Stopping");
EVP_CIPHER_CTX_free (filter->evp_ctx);
return TRUE;
}
/* AesDec helper functions */
static gboolean
gst_aes_dec_openssl_init (GstAesDec * filter)
{
GST_DEBUG_OBJECT (filter, "Initializing with %s",
OpenSSL_version (OPENSSL_VERSION));
filter->evp_cipher =
EVP_get_cipherbyname (gst_aes_cipher_enum_to_string (filter->cipher));
if (!filter->evp_cipher) {
GST_ERROR_OBJECT (filter, "Could not get cipher by name from openssl");
return FALSE;
}
if (!(filter->evp_ctx = EVP_CIPHER_CTX_new ()))
return FALSE;
GST_LOG_OBJECT (filter, "Initialization successful");
return TRUE;
}

90
ext/aes/gstaesdec.h Normal file
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@ -0,0 +1,90 @@
/*
* GStreamer gstreamer-aesdec
*
* Copyright, LCC (C) 2015 RidgeRun, LCC <carsten.behling@ridgerun.com>
* Copyright, 2020 Nice, Contact: Rabindra Harlalka <Rabindra.Harlalka@nice.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Alternatively, the contents of this file may be used under the
* GNU Lesser General Public License Version 2.1 (the "LGPL"), in
* which case the following provisions apply instead of the ones
* mentioned above:
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1335, USA.
*/
#ifndef __GST_AES_DEC_H__
#define __GST_AES_DEC_H__
#include "gstaeshelper.h"
#include <gst/base/gstbasetransform.h>
G_BEGIN_DECLS
#define GST_TYPE_AES_DEC (gst_aes_dec_get_type())
G_DECLARE_FINAL_TYPE (GstAesDec, gst_aes_dec, GST, AES_DEC, GstBaseTransform)
#define GST_AES_DEC(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AES_DEC,GstAesDec))
#define GST_AES_DEC_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_AES_DEC,GstAesDecClass))
#define GST_AES_DEC_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), GST_TYPE_AES_DEC,GstAesDecClass))
#define GST_IS_AES_DEC(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AES_DEC))
#define GST_IS_AES_DEC_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_AES_DEC))
struct _GstAesDec
{
GstBaseTransform element;
/* Properties */
GstAesCipher cipher;
guchar key[EVP_MAX_KEY_LENGTH];
guchar iv[GST_AES_BLOCK_SIZE];
gboolean serialize_iv;
gboolean per_buffer_padding;
/* Element variables */
const EVP_CIPHER *evp_cipher;
EVP_CIPHER_CTX *evp_ctx;
gboolean awaiting_first_buffer;
GMutex decoder_lock;
/* if TRUE, then properties cannot be changed */
gboolean locked_properties;
};
struct _GstAesDecClass
{
GstBaseTransformClass parent_class;
};
GST_ELEMENT_REGISTER_DECLARE (aesdec)
G_END_DECLS
#endif /* __GST_AES_DEC_H__ */

594
ext/aes/gstaesenc.c Normal file
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@ -0,0 +1,594 @@
/*
* GStreamer gstreamer-aesenc
*
* Copyright, LCC (C) 2015 RidgeRun, LCC <carsten.behling@ridgerun.com>
* Copyright, LCC (C) 2016 RidgeRun, LCC <jose.jimenez@ridgerun.com>
* Copyright (C) 2020 Nice, Contact: Rabindra Harlalka <Rabindra.Harlalka@nice.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Alternatively, the contents of this file may be used under the
* GNU Lesser General Public License Version 2.1 (the "LGPL"), in
* which case the following provisions apply instead of the ones
* mentioned above:
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1335, USA.
*/
/**
* SECTION:element-aesenc
*
* AES encryption
*
* ## Example
*
* |[
* echo "This is an AES crypto test ... " > plain.txt && \
* gst-launch-1.0 filesrc location=plain.txt ! \
* aesenc key=1f9423681beb9a79215820f6bda73d0f iv=e9aa8e834d8d70b7e0d254ff670dd718 ! \
* aesdec key=1f9423681beb9a79215820f6bda73d0f iv=e9aa8e834d8d70b7e0d254ff670dd718 ! \
* filesink location=dec.txt && \
* cat dec.txt
*
* ]|
*
* Since: 1.20
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <gst/gst.h>
#include <gst/base/gstbasetransform.h>
#include <string.h>
#include "gstaeshelper.h"
#include "gstaesenc.h"
GST_DEBUG_CATEGORY_STATIC (gst_aes_enc_debug);
#define GST_CAT_DEFAULT gst_aes_enc_debug
G_DEFINE_TYPE_WITH_CODE (GstAesEnc, gst_aes_enc, GST_TYPE_BASE_TRANSFORM,
GST_DEBUG_CATEGORY_INIT (gst_aes_enc_debug, "aesenc", 0,
"aesenc AES encryption element")
);
GST_ELEMENT_REGISTER_DEFINE (aesenc, "aesenc", GST_RANK_PRIMARY,
GST_TYPE_AES_ENC);
static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("ANY")
);
static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("ANY")
);
static void gst_aes_enc_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_aes_enc_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstFlowReturn gst_aes_enc_transform (GstBaseTransform * base,
GstBuffer * inbuf, GstBuffer * outbuf);
static GstFlowReturn gst_aes_enc_prepare_output_buffer (GstBaseTransform * base,
GstBuffer * inbuf, GstBuffer ** outbuf);
static gboolean gst_aes_enc_start (GstBaseTransform * base);
static gboolean gst_aes_enc_stop (GstBaseTransform * base);
static gboolean
gst_aes_enc_sink_event (GstBaseTransform * base, GstEvent * event);
/* aes_enc helper functions */
static gboolean gst_aes_enc_openssl_init (GstAesEnc * filter);
static void gst_aes_enc_finalize (GObject * object);
/* GObject vmethod implementations */
/* initialize class */
static void
gst_aes_enc_class_init (GstAesEncClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
gobject_class->set_property = gst_aes_enc_set_property;
gobject_class->get_property = gst_aes_enc_get_property;
gobject_class->finalize = gst_aes_enc_finalize;
gst_type_mark_as_plugin_api (GST_TYPE_AES_CIPHER, 0);
/**
* GstAesEnc:cipher
*
* AES cipher mode (key length and mode)
* Currently, 128 and 256 bit keys are supported,
* in "cipher block chaining" (CBC) mode
*
* Since: 1.20
*/
g_object_class_install_property (gobject_class, PROP_CIPHER,
g_param_spec_enum ("cipher",
"Cipher",
"cipher mode",
GST_TYPE_AES_CIPHER, GST_AES_DEFAULT_CIPHER_MODE,
(G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_READY)));
/**
* GstAesEnc:serialize-iv
*
* If true, store initialization vector in first 16 bytes of first buffer
*
* Since: 1.20
*/
g_object_class_install_property (gobject_class, PROP_SERIALIZE_IV,
g_param_spec_boolean ("serialize-iv", "Serialize IV",
"Store initialization vector in first 16 bytes of first buffer",
GST_AES_DEFAULT_SERIALIZE_IV,
G_PARAM_READWRITE | GST_PARAM_MUTABLE_READY));
/**
* GstAesEnc:per-buffer-padding
*
* If true, each buffer will be padded using PKCS7 padding
* If false, only the final buffer in the stream will be padded
* (by OpenSSL) using PKCS7
*
* Since: 1.20
*/
g_object_class_install_property (gobject_class, PROP_PER_BUFFER_PADDING,
g_param_spec_boolean ("per-buffer-padding", "Per buffer padding",
"If true, pad each buffer using PKCS7 padding scheme. Otherwise, only"
"pad final buffer",
GST_AES_PER_BUFFER_PADDING_DEFAULT,
G_PARAM_READWRITE | GST_PARAM_MUTABLE_READY));
/**
* GstAesEnc:key
*
* AES encryption key (hexadecimal)
*
* Since: 1.20
*/
g_object_class_install_property (gobject_class, PROP_KEY,
g_param_spec_string ("key", "Key",
"AES encryption key (in hexadecimal). Length (in bytes) must be equivalent to "
"the number of bits in the key length : "
"16 bytes for AES 128 and 32 bytes for AES 256",
(gchar *) GST_AES_DEFAULT_KEY,
G_PARAM_READWRITE | GST_PARAM_MUTABLE_READY));
/**
* GstAesEnc:iv
*
* AES encryption initialization vector (hexadecimal)
*
* Since: 1.20
*/
g_object_class_install_property (gobject_class, PROP_IV,
g_param_spec_string ("iv", "Iv",
"AES encryption initialization vector (in hexadecimal). "
"Length must equal AES block length (16 bytes)",
(gchar *) GST_AES_DEFAULT_IV,
G_PARAM_READWRITE | GST_PARAM_MUTABLE_READY));
gst_element_class_set_details_simple (gstelement_class,
"aesenc",
"Generic/Filter",
"AES buffer encryption",
"Rabindra Harlalka <Rabindra.Harlalka@nice.com>");
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&src_template));
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&sink_template));
GST_BASE_TRANSFORM_CLASS (klass)->transform =
GST_DEBUG_FUNCPTR (gst_aes_enc_transform);
GST_BASE_TRANSFORM_CLASS (klass)->prepare_output_buffer =
GST_DEBUG_FUNCPTR (gst_aes_enc_prepare_output_buffer);
GST_BASE_TRANSFORM_CLASS (klass)->start =
GST_DEBUG_FUNCPTR (gst_aes_enc_start);
GST_BASE_TRANSFORM_CLASS (klass)->sink_event =
GST_DEBUG_FUNCPTR (gst_aes_enc_sink_event);
GST_BASE_TRANSFORM_CLASS (klass)->stop = GST_DEBUG_FUNCPTR (gst_aes_enc_stop);
}
/* Initialize element
*/
static void
gst_aes_enc_init (GstAesEnc * filter)
{
GST_INFO_OBJECT (filter, "Initializing plugin");
filter->cipher = GST_AES_DEFAULT_CIPHER_MODE;
filter->awaiting_first_buffer = TRUE;
filter->per_buffer_padding = GST_AES_PER_BUFFER_PADDING_DEFAULT;
g_mutex_init (&filter->encoder_lock);
}
static void
gst_aes_enc_finalize (GObject * object)
{
GstAesEnc *filter = GST_AES_ENC (object);
g_mutex_clear (&filter->encoder_lock);
G_OBJECT_CLASS (gst_aes_enc_parent_class)->finalize (object);
}
static void
gst_aes_enc_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstAesEnc *filter = GST_AES_ENC (object);
g_mutex_lock (&filter->encoder_lock);
/* no property may be set after first output buffer is prepared */
if (filter->locked_properties) {
GST_WARNING_OBJECT (filter,
"Properties cannot be set once buffers begin flowing in element. Ignored");
goto cleanup;
}
switch (prop_id) {
case PROP_CIPHER:
filter->cipher = g_value_get_enum (value);
filter->evp_cipher =
EVP_get_cipherbyname (gst_aes_cipher_enum_to_string (filter->cipher));
GST_DEBUG_OBJECT (filter, "cipher: %s",
gst_aes_cipher_enum_to_string (filter->cipher));
break;
case PROP_SERIALIZE_IV:
filter->serialize_iv = g_value_get_boolean (value);
GST_DEBUG_OBJECT (filter, "serialize iv: %s",
filter->serialize_iv ? "TRUE" : "FALSE");
break;
case PROP_PER_BUFFER_PADDING:
filter->per_buffer_padding = g_value_get_boolean (value);
GST_DEBUG_OBJECT (filter, "Per buffer padding: %s",
filter->per_buffer_padding ? "TRUE" : "FALSE");
break;
case PROP_KEY:
{
guint hex_len = gst_aes_hexstring2bytearray (GST_ELEMENT (filter),
g_value_get_string (value), filter->key);
if (!hex_len) {
GST_ERROR_OBJECT (filter, "invalid key");
goto cleanup;
}
GST_DEBUG_OBJECT (filter, "key: %s", g_value_get_string (value));
}
break;
case PROP_IV:
{
gchar iv_string[2 * GST_AES_BLOCK_SIZE + 1];
guint hex_len = gst_aes_hexstring2bytearray (GST_ELEMENT (filter),
g_value_get_string (value), filter->iv);
if (hex_len != GST_AES_BLOCK_SIZE) {
GST_ERROR_OBJECT (filter, "invalid initialization vector");
goto cleanup;
}
GST_DEBUG_OBJECT (filter, "iv: %s",
gst_aes_bytearray2hexstring (filter->iv, iv_string,
GST_AES_BLOCK_SIZE));
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
cleanup:
g_mutex_unlock (&filter->encoder_lock);
}
static void
gst_aes_enc_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstAesEnc *filter = GST_AES_ENC (object);
switch (prop_id) {
case PROP_CIPHER:
g_value_set_enum (value, filter->cipher);
break;
case PROP_SERIALIZE_IV:
g_value_set_boolean (value, filter->serialize_iv);
break;
case PROP_PER_BUFFER_PADDING:
g_value_set_boolean (value, filter->per_buffer_padding);
break;
case PROP_KEY:
g_value_set_string (value, (gchar *) filter->key);
break;
case PROP_IV:
g_value_set_string (value, (gchar *) filter->iv);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
gst_aes_enc_sink_event (GstBaseTransform * base, GstEvent * event)
{
GstAesEnc *filter = GST_AES_ENC (base);
g_mutex_lock (&filter->encoder_lock);
if (GST_EVENT_TYPE (event) == GST_EVENT_EOS) {
GST_DEBUG_OBJECT (filter, "Received EOS on sink pad");
if (!filter->per_buffer_padding && !filter->awaiting_first_buffer) {
gint len;
GstBuffer *outbuf;
GstMapInfo outmap;
outbuf = gst_buffer_new_allocate (NULL, EVP_MAX_BLOCK_LENGTH, NULL);
if (outbuf == NULL) {
GST_DEBUG_OBJECT (filter,
"Failed to allocate a new buffer of length %d",
EVP_MAX_BLOCK_LENGTH);
goto buffer_fail;
}
if (!gst_buffer_map (outbuf, &outmap, GST_MAP_WRITE)) {
GST_DEBUG_OBJECT (filter,
"gst_buffer_map on outbuf failed for final buffer.");
gst_buffer_unref (outbuf);
goto buffer_fail;
}
if (1 != EVP_CipherFinal_ex (filter->evp_ctx, outmap.data, &len)) {
GST_DEBUG_OBJECT (filter, "Could not finalize openssl encryption");
gst_buffer_unmap (outbuf, &outmap);
gst_buffer_unref (outbuf);
goto cipher_fail;
}
if (len == 0) {
GST_DEBUG_OBJECT (filter, "Not pushing final buffer as length is 0");
gst_buffer_unmap (outbuf, &outmap);
gst_buffer_unref (outbuf);
goto out;
}
GST_DEBUG_OBJECT (filter, "Pushing final buffer of length: %d", len);
gst_buffer_unmap (outbuf, &outmap);
gst_buffer_set_size (outbuf, len);
if (gst_pad_push (base->srcpad, outbuf) != GST_FLOW_OK) {
GST_DEBUG_OBJECT (filter, "Failed to push the final buffer");
goto push_fail;
}
} else {
GST_DEBUG_OBJECT (filter,
"Not pushing final buffer as we didn't have any input");
}
}
out:
g_mutex_unlock (&filter->encoder_lock);
return GST_BASE_TRANSFORM_CLASS (gst_aes_enc_parent_class)->sink_event (base,
event);
/* ERROR */
buffer_fail:
GST_ELEMENT_ERROR (filter, RESOURCE, FAILED, (NULL),
("Failed to allocate or map buffer for writing"));
g_mutex_unlock (&filter->encoder_lock);
return FALSE;
cipher_fail:
GST_ELEMENT_ERROR (filter, STREAM, FAILED, ("Cipher finalization failed."),
("Error while finalizing the stream"));
g_mutex_unlock (&filter->encoder_lock);
return FALSE;
push_fail:
GST_ELEMENT_ERROR (filter, CORE, PAD, (NULL),
("Failed to push the final buffer"));
g_mutex_unlock (&filter->encoder_lock);
return FALSE;
}
/* GstBaseTransform vmethod implementations */
static GstFlowReturn
gst_aes_enc_transform (GstBaseTransform * base,
GstBuffer * inbuf, GstBuffer * outbuf)
{
GstAesEnc *filter = GST_AES_ENC (base);
GstFlowReturn ret = GST_FLOW_ERROR;
GstMapInfo inmap, outmap;
guchar *plaintext;
gint plaintext_len;
guchar *ciphertext;
gint ciphertext_len;
gint out_len;
if (!gst_buffer_map (inbuf, &inmap, GST_MAP_READ)) {
GST_ELEMENT_ERROR (filter, RESOURCE, FAILED, (NULL),
("Failed to map buffer for reading"));
goto cleanup;
}
if (!gst_buffer_map (outbuf, &outmap, GST_MAP_WRITE)) {
gst_buffer_unmap (inbuf, &inmap);
GST_ELEMENT_ERROR (filter, RESOURCE, FAILED, (NULL),
("Failed to map buffer for writing"));
goto cleanup;
}
/* ENCRYPTING */
plaintext = inmap.data;
plaintext_len = inmap.size;
if (filter->padding)
plaintext_len += filter->padding - GST_AES_BLOCK_SIZE;
ciphertext = outmap.data;
if (filter->awaiting_first_buffer) {
if (!EVP_CipherInit_ex (filter->evp_ctx, filter->evp_cipher, NULL,
filter->key, filter->iv, TRUE)) {
GST_ERROR_OBJECT (filter, "Could not initialize openssl cipher");
goto cleanup;
}
if (filter->serialize_iv) {
memcpy (ciphertext, filter->iv, GST_AES_BLOCK_SIZE);
ciphertext += GST_AES_BLOCK_SIZE;
}
}
/* encrypt unpadded buffer */
if (!EVP_CipherUpdate (filter->evp_ctx, ciphertext,
&ciphertext_len, plaintext, plaintext_len)) {
GST_ELEMENT_ERROR (filter, STREAM, FAILED, ("Cipher update failed."),
("Error while updating openssl cipher"));
goto cleanup;
} else if (filter->padding) {
gint temp;
guint k;
/* PKCS7 padding */
memset (filter->padded_block, filter->padding, GST_AES_BLOCK_SIZE);
for (k = 0; k < GST_AES_BLOCK_SIZE - filter->padding; ++k)
filter->padded_block[k] = plaintext[plaintext_len + k];
/* encrypt padding buffer */
if (!EVP_CipherUpdate (filter->evp_ctx,
ciphertext + ciphertext_len, &temp,
filter->padded_block, GST_AES_BLOCK_SIZE)) {
GST_ELEMENT_ERROR (filter, STREAM, FAILED, ("Cipher update failed."),
("Error while updating openssl cipher"));
goto cleanup;
} else {
g_assert (temp == GST_AES_BLOCK_SIZE);
ciphertext_len += GST_AES_BLOCK_SIZE;
plaintext_len += GST_AES_BLOCK_SIZE;
}
}
gst_buffer_unmap (inbuf, &inmap);
gst_buffer_unmap (outbuf, &outmap);
out_len = ciphertext_len + (filter->serialize_iv ? GST_AES_BLOCK_SIZE : 0);
gst_buffer_set_size (outbuf, out_len);
GST_LOG_OBJECT (filter,
"plaintext len: %d, ciphertext len: %d, padding: %d, output buffer length: %d",
plaintext_len, ciphertext_len, filter->padding, out_len);
ret = GST_FLOW_OK;
cleanup:
filter->awaiting_first_buffer = FALSE;
return ret;
}
static GstFlowReturn
gst_aes_enc_prepare_output_buffer (GstBaseTransform * base,
GstBuffer * inbuf, GstBuffer ** outbuf)
{
GstAesEnc *filter = GST_AES_ENC (base);
GstBaseTransformClass *bclass = GST_BASE_TRANSFORM_GET_CLASS (base);
guint out_size = (guint) gst_buffer_get_size (inbuf);
g_mutex_lock (&filter->encoder_lock);
filter->locked_properties = TRUE;
if (filter->per_buffer_padding) {
/* pad to multiple of GST_AES_BLOCK_SIZE */
filter->padding =
GST_AES_BLOCK_SIZE - (out_size & (GST_AES_BLOCK_SIZE - 1));
out_size += filter->padding;
} else {
/* we need extra space at end of output buffer
* when we let OpenSSL handle PKCS7 padding */
out_size += GST_AES_BLOCK_SIZE;
}
/* add room for serialized IV at beginning of first output buffer */
if (filter->serialize_iv && filter->awaiting_first_buffer)
out_size += GST_AES_BLOCK_SIZE;
g_mutex_unlock (&filter->encoder_lock);
GST_LOG_OBJECT (filter,
"Input buffer size %d, output buffer size: %d. padding : %d",
(guint) gst_buffer_get_size (inbuf), out_size, filter->padding);
*outbuf = gst_buffer_new_allocate (NULL, out_size, NULL);
bclass->copy_metadata (base, inbuf, *outbuf);
return GST_FLOW_OK;
}
static gboolean
gst_aes_enc_start (GstBaseTransform * base)
{
GstAesEnc *filter = GST_AES_ENC (base);
GST_INFO_OBJECT (filter, "Starting");
if (!gst_aes_enc_openssl_init (filter)) {
GST_ERROR_OBJECT (filter, "OpenSSL initialization failed");
return FALSE;
}
GST_INFO_OBJECT (filter, "Start successful");
return TRUE;
}
static gboolean
gst_aes_enc_stop (GstBaseTransform * base)
{
GstAesEnc *filter = GST_AES_ENC (base);
GST_INFO_OBJECT (filter, "Stopping");
EVP_CIPHER_CTX_free (filter->evp_ctx);
return TRUE;
}
/* AesEnc helper functions */
static gboolean
gst_aes_enc_openssl_init (GstAesEnc * filter)
{
GST_DEBUG_OBJECT (filter, "Initializing with %s",
OpenSSL_version (OPENSSL_VERSION));
filter->evp_cipher =
EVP_get_cipherbyname (gst_aes_cipher_enum_to_string (filter->cipher));
if (!filter->evp_cipher) {
GST_ERROR_OBJECT (filter, "Could not get cipher by name from openssl");
return FALSE;
}
if (!(filter->evp_ctx = EVP_CIPHER_CTX_new ()))
return FALSE;
GST_LOG_OBJECT (filter, "Initialization successful");
return TRUE;
}

92
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/*
* GStreamer gstreamer-aesenc
*
* Copyright, LCC (C) 2015 RidgeRun, LCC <carsten.behling@ridgerun.com>
* Copyright, 2020 Nice, Contact: Rabindra Harlalka <Rabindra.Harlalka@nice.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Alternatively, the contents of this file may be used under the
* GNU Lesser General Public License Version 2.1 (the "LGPL"), in
* which case the following provisions apply instead of the ones
* mentioned above:
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1335, USA.
*/
#ifndef __GST_AES_ENC_H__
#define __GST_AES_ENC_H__
#include "gstaeshelper.h"
#include <gst/base/gstbasetransform.h>
G_BEGIN_DECLS
#define GST_TYPE_AES_ENC (gst_aes_enc_get_type())
G_DECLARE_FINAL_TYPE (GstAesEnc, gst_aes_enc, GST, AES_ENC, GstBaseTransform)
#define GST_AES_ENC(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AES_ENC,GstAesEnc))
#define GST_AES_ENC_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_AES_ENC,GstAesEncClass))
#define GST_AES_ENC_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), GST_TYPE_AES_ENC,GstAesEncClass))
#define GST_IS_AES_ENC(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AES_ENC))
#define GST_IS_AES_ENC_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_AES_ENC))
struct _GstAesEnc
{
GstBaseTransform element;
/* Properties */
GstAesCipher cipher;
guchar key[EVP_MAX_KEY_LENGTH];
guchar iv[GST_AES_BLOCK_SIZE];
gboolean serialize_iv;
gboolean per_buffer_padding;
/* Element variables */
const EVP_CIPHER *evp_cipher;
EVP_CIPHER_CTX *evp_ctx;
guchar padding;
guchar padded_block[GST_AES_BLOCK_SIZE];
gboolean awaiting_first_buffer;
GMutex encoder_lock;
/* if TRUE, then properties cannot be changed */
gboolean locked_properties;
};
struct _GstAesEncClass
{
GstBaseTransformClass parent_class;
};
GST_ELEMENT_REGISTER_DECLARE (aesenc)
G_END_DECLS
#endif /* __GST_AES_ENC_H__ */

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/*
* GStreamer gstreamer-aeshelper
*
* Copyright, LCC (C) 2015 RidgeRun, LCC <carsten.behling@ridgerun.com>
* Copyright, LCC (C) 2016 RidgeRun, LCC <jose.jimenez@ridgerun.com>
* Copyright (C) 2020 Nice, Contact: Rabindra Harlalka <Rabindra.Harlalka@nice.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Alternatively, the contents of this file may be used under the
* GNU Lesser General Public License Version 2.1 (the "LGPL"), in
* which case the following provisions apply instead of the ones
* mentioned above:
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1335, USA.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "gstaeshelper.h"
GType
gst_aes_cipher_get_type (void)
{
static GType aes_cipher_type = 0;
if (g_once_init_enter (&aes_cipher_type)) {
static GEnumValue aes_cipher_types[] = {
{GST_AES_CIPHER_128_CBC, "AES 128 bit cipher key using CBC method",
"aes-128-cbc"},
{GST_AES_CIPHER_256_CBC,
"AES 256 bit cipher key using CBC method",
"aes-256-cbc"},
{0, NULL, NULL},
};
GType temp = g_enum_register_static ("GstAesCipher",
aes_cipher_types);
g_once_init_leave (&aes_cipher_type, temp);
}
return aes_cipher_type;
}
const gchar *
gst_aes_cipher_enum_to_string (GstAesCipher cipher)
{
switch (cipher) {
case GST_AES_CIPHER_128_CBC:
return "aes-128-cbc";
break;
case GST_AES_CIPHER_256_CBC:
return "aes-256-cbc";
break;
}
return "";
}
gchar
gst_aes_nibble_to_hex (gchar in)
{
return in < 10 ? in + 48 : in + 55;
}
/*
* gst_aes_bytearray2hexstring
*
* convert array of bytes to hex string
*
* @param in input byte array
* @param out allocated hex string for output
* @param len length of input byte array
*
* @return output hex string
*/
gchar *
gst_aes_bytearray2hexstring (const guchar * in, gchar * const out,
const gushort len)
{
gushort i;
gchar high;
gchar low;
for (i = 0; i < len; i++) {
high = (in[i] & 0xF0) >> 4;
low = in[i] & 0x0F;
out[i * 2] = gst_aes_nibble_to_hex (high);
out[i * 2 + 1] = gst_aes_nibble_to_hex (low);
}
out[len * 2] = 0; /* null terminate */
return out;
}
/*
* gst_aes_hexstring2bytearray
*
* convert hex string to array of bytes
*
* @param filter calling element
* @param in input hex string
* @param allocated byte array for output
*
* @return output byte array
*/
guint
gst_aes_hexstring2bytearray (GstElement * filter, const gchar * in,
guchar * out)
{
gchar byte_val;
guint hex_count = 0;
GST_LOG_OBJECT (filter, "Converting hex string to number");
g_return_val_if_fail (in && out, 0);
while (*in != 0) {
/* Compute fist half-byte */
if (*in >= 'A' && *in <= 'F') {
byte_val = (*in - 55) << 4;
} else if (*in >= 'a' && *in <= 'f') {
byte_val = (*in - 87) << 4;
} else if (*in >= '0' && *in <= '9') {
byte_val = (*in - 48) << 4;
} else {
return 0;
}
in++;
if (*in == 0) {
break;
}
/* Compute second half-byte */
if (*in >= 'A' && *in <= 'F') {
*out = (*in - 55) + byte_val;
} else if (*in >= 'a' && *in <= 'f') {
*out = (*in - 87) + byte_val;
} else if (*in >= '0' && *in <= '9') {
*out = (*in - 48) + byte_val;
} else {
return 0;
}
GST_LOG_OBJECT (filter, "ch: %c%c, hex: 0x%x", *(in - 1), *in, *out);
in++;
out++;
if (!in || !out)
return 0;
hex_count++;
}
GST_LOG_OBJECT (filter, "Hex string conversion successful");
return hex_count;
}

104
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/*
* GStreamer gstreamer-aeshelper
*
* Copyright, LCC (C) 2015 RidgeRun, LCC <carsten.behling@ridgerun.com>
* Copyright, 2020 Nice, Contact: Rabindra Harlalka <Rabindra.Harlalka@nice.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Alternatively, the contents of this file may be used under the
* GNU Lesser General Public License Version 2.1 (the "LGPL"), in
* which case the following provisions apply instead of the ones
* mentioned above:
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1335, USA.
*/
#ifndef __GST_AES_HELPER_H__
#define __GST_AES_HELPER_H__
#include <gst/gst.h>
#include <openssl/conf.h>
#include <openssl/evp.h>
#include <openssl/err.h>
/**
* GstAesCipher:
* @GST_AES_CIPHER_128_CBC: AES cipher with 128 bit key using CBC
* @GST_AES_CIPHER_256_CBC: AES cipher with 256 bit key using CBC
*
* Type of AES cipher to use
*
* Since: 1.20
*/
typedef enum {
GST_AES_CIPHER_128_CBC,
GST_AES_CIPHER_256_CBC
} GstAesCipher;
#define GST_AES_DEFAULT_SERIALIZE_IV FALSE
#define GST_AES_DEFAULT_KEY ""
#define GST_AES_DEFAULT_IV ""
#define GST_AES_DEFAULT_CIPHER_MODE GST_AES_CIPHER_128_CBC
#define GST_AES_PER_BUFFER_PADDING_DEFAULT TRUE
#define GST_AES_BLOCK_SIZE 16
/* only 128 or 256 bit key length is supported */
#define GST_AES_MAX_KEY_SIZE 32
enum
{
PROP_0,
PROP_CIPHER,
PROP_SERIALIZE_IV,
PROP_KEY,
PROP_IV,
PROP_PER_BUFFER_PADDING
};
G_BEGIN_DECLS
GType gst_aes_cipher_get_type (void);
#define GST_TYPE_AES_CIPHER (gst_aes_cipher_get_type ())
const gchar* gst_aes_cipher_enum_to_string (GstAesCipher cipher);
gchar
gst_aes_nibble_to_hex (gchar in);
gchar *
gst_aes_bytearray2hexstring (const guchar * in, gchar * const out,
const gushort len);
guint
gst_aes_hexstring2bytearray (GstElement * filter, const gchar * in,
guchar * out);
G_END_DECLS
#endif /* __GST_AES_HELPER_H__ */

28
ext/aes/meson.build Normal file
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aes_sources = [
'gstaes.c',
'gstaeshelper.c',
'gstaesenc.c',
'gstaesdec.c',
]
aes_cargs = []
aes_dep = dependency('openssl', required : get_option('aes'))
if aes_dep.found()
aes_cargs += ['-DHAVE_OPENSSL']
else
subdir_done()
endif
gstaes = library('gstaes',
aes_sources,
c_args : gst_plugins_bad_args + aes_cargs,
link_args : noseh_link_args,
include_directories : [configinc],
dependencies : [gstpbutils_dep, gstvideo_dep,
aes_dep, gio_dep, libm],
install : true,
install_dir : plugins_install_dir,
)
pkgconfig.generate(gstaes, install_dir : plugins_pkgconfig_install_dir)
plugins += [gstaes]
aes_dep = declare_dependency(include_directories : include_directories('.'))

44
ext/aom/gstaom.c Normal file
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/* GStreamer
* Copyright (C) <2017> Sean DuBois <sean@siobud.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <gst/gst.h>
#include "gstaom.h"
#include "gstav1enc.h"
#include "gstav1dec.h"
static gboolean
plugin_init (GstPlugin * plugin)
{
gboolean ret = FALSE;
ret |= GST_ELEMENT_REGISTER (av1enc, plugin);
ret |= GST_ELEMENT_REGISTER (av1dec, plugin);
return ret;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
aom,
"AOM plugin library",
plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)

24
ext/aom/gstaom.h Normal file
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/* GStreamer
* Copyright (C) <2017> Sean DuBois <sean@siobud.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GST_AOM_H__
#define __GST_AOM_H__
#endif /* __GST_AOM_H__ */

485
ext/aom/gstav1dec.c Normal file
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/* GStreamer
* Copyright (C) <2017> Sean DuBois <sean@siobud.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:element-av1dec
*
* AV1 Decoder.
*
* ## Example launch line
*
* |[
* gst-launch-1.0 -v filesrc location=videotestsrc.webm ! matroskademux ! av1dec ! videoconvert ! videoscale ! autovideosink
* ]|
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include "gstav1dec.h"
enum
{
PROP_0,
};
static GstStaticPadTemplate gst_av1_dec_sink_pad_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-av1")
);
static GstStaticPadTemplate gst_av1_dec_src_pad_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("{ I420, YV12, Y42B, Y444"
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
", I420_10LE, I420_12LE, I422_10LE, I422_12LE, Y444_10LE, Y444_12LE"
#else
", I420_10BE, I420_12BE, I422_10BE, I422_12BE, Y444_10BE, Y444_12BE"
#endif
" }"))
);
GST_DEBUG_CATEGORY_STATIC (av1_dec_debug);
#define GST_CAT_DEFAULT av1_dec_debug
#define GST_VIDEO_FORMAT_WITH_ENDIAN(fmt,endian) GST_VIDEO_FORMAT_##fmt##endian
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
#define AOM_FMT_TO_GST(fmt) GST_VIDEO_FORMAT_WITH_ENDIAN(fmt,LE)
#else
#define AOM_FMT_TO_GST(fmt) GST_VIDEO_FORMAT_WITH_ENDIAN(fmt,BE)
#endif
static void gst_av1_dec_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_av1_dec_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static gboolean gst_av1_dec_start (GstVideoDecoder * dec);
static gboolean gst_av1_dec_stop (GstVideoDecoder * dec);
static gboolean gst_av1_dec_set_format (GstVideoDecoder * dec,
GstVideoCodecState * state);
static gboolean gst_av1_dec_flush (GstVideoDecoder * dec);
static GstFlowReturn
gst_av1_dec_handle_frame (GstVideoDecoder * decoder,
GstVideoCodecFrame * frame);
static void gst_av1_dec_image_to_buffer (GstAV1Dec * dec,
const aom_image_t * img, GstBuffer * buffer);
static GstFlowReturn gst_av1_dec_open_codec (GstAV1Dec * av1dec,
GstVideoCodecFrame * frame);
static gboolean gst_av1_dec_get_valid_format (GstAV1Dec * dec,
const aom_image_t * img, GstVideoFormat * fmt);
#define gst_av1_dec_parent_class parent_class
G_DEFINE_TYPE (GstAV1Dec, gst_av1_dec, GST_TYPE_VIDEO_DECODER);
GST_ELEMENT_REGISTER_DEFINE (av1dec, "av1dec", GST_RANK_PRIMARY,
GST_TYPE_AV1_DEC);
static void
gst_av1_dec_class_init (GstAV1DecClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *element_class;
GstVideoDecoderClass *vdec_class;
gobject_class = (GObjectClass *) klass;
element_class = (GstElementClass *) klass;
vdec_class = (GstVideoDecoderClass *) klass;
parent_class = g_type_class_peek_parent (klass);
gobject_class->set_property = gst_av1_dec_set_property;
gobject_class->get_property = gst_av1_dec_get_property;
gst_element_class_add_static_pad_template (element_class,
&gst_av1_dec_src_pad_template);
gst_element_class_add_static_pad_template (element_class,
&gst_av1_dec_sink_pad_template);
gst_element_class_set_static_metadata (element_class, "AV1 Decoder",
"Codec/Decoder/Video", "Decode AV1 video streams",
"Sean DuBois <sean@siobud.com>");
vdec_class->start = GST_DEBUG_FUNCPTR (gst_av1_dec_start);
vdec_class->stop = GST_DEBUG_FUNCPTR (gst_av1_dec_stop);
vdec_class->flush = GST_DEBUG_FUNCPTR (gst_av1_dec_flush);
vdec_class->set_format = GST_DEBUG_FUNCPTR (gst_av1_dec_set_format);
vdec_class->handle_frame = GST_DEBUG_FUNCPTR (gst_av1_dec_handle_frame);
klass->codec_algo = &aom_codec_av1_dx_algo;
GST_DEBUG_CATEGORY_INIT (av1_dec_debug, "av1dec", 0, "AV1 decoding element");
}
static void
gst_av1_dec_init (GstAV1Dec * av1dec)
{
GstVideoDecoder *dec = (GstVideoDecoder *) av1dec;
GST_DEBUG_OBJECT (dec, "gst_av1_dec_init");
gst_video_decoder_set_packetized (dec, TRUE);
gst_video_decoder_set_needs_format (dec, TRUE);
gst_video_decoder_set_use_default_pad_acceptcaps (dec, TRUE);
GST_PAD_SET_ACCEPT_TEMPLATE (GST_VIDEO_DECODER_SINK_PAD (dec));
}
static void
gst_av1_dec_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
switch (prop_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_av1_dec_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
switch (prop_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
gst_av1_dec_start (GstVideoDecoder * dec)
{
GstAV1Dec *av1dec = GST_AV1_DEC_CAST (dec);
av1dec->decoder_inited = FALSE;
av1dec->output_state = NULL;
av1dec->input_state = NULL;
return TRUE;
}
static gboolean
gst_av1_dec_stop (GstVideoDecoder * dec)
{
GstAV1Dec *av1dec = GST_AV1_DEC_CAST (dec);
if (av1dec->output_state) {
gst_video_codec_state_unref (av1dec->output_state);
av1dec->output_state = NULL;
}
if (av1dec->input_state) {
gst_video_codec_state_unref (av1dec->input_state);
av1dec->input_state = NULL;
}
if (av1dec->decoder_inited) {
aom_codec_destroy (&av1dec->decoder);
}
av1dec->decoder_inited = FALSE;
return TRUE;
}
static gboolean
gst_av1_dec_set_format (GstVideoDecoder * dec, GstVideoCodecState * state)
{
GstAV1Dec *av1dec = GST_AV1_DEC_CAST (dec);
if (av1dec->decoder_inited) {
aom_codec_destroy (&av1dec->decoder);
}
av1dec->decoder_inited = FALSE;
if (av1dec->output_state) {
gst_video_codec_state_unref (av1dec->output_state);
av1dec->output_state = NULL;
}
if (av1dec->input_state) {
gst_video_codec_state_unref (av1dec->input_state);
}
av1dec->input_state = gst_video_codec_state_ref (state);
return TRUE;
}
static gboolean
gst_av1_dec_flush (GstVideoDecoder * dec)
{
GstAV1Dec *av1dec = GST_AV1_DEC_CAST (dec);
if (av1dec->output_state) {
gst_video_codec_state_unref (av1dec->output_state);
av1dec->output_state = NULL;
}
if (av1dec->decoder_inited) {
aom_codec_destroy (&av1dec->decoder);
}
av1dec->decoder_inited = FALSE;
return TRUE;
}
static GstFlowReturn
gst_av1_dec_open_codec (GstAV1Dec * av1dec, GstVideoCodecFrame * frame)
{
aom_codec_err_t status;
GstAV1DecClass *av1class = GST_AV1_DEC_GET_CLASS (av1dec);
status = aom_codec_dec_init (&av1dec->decoder, av1class->codec_algo, NULL, 0);
if (status != AOM_CODEC_OK) {
GST_ELEMENT_ERROR (av1dec, LIBRARY, INIT,
("Failed to initialize AOM decoder"), ("%s", ""));
return GST_FLOW_ERROR;
}
av1dec->decoder_inited = TRUE;
return GST_FLOW_OK;
}
static void
gst_av1_dec_handle_resolution_change (GstAV1Dec * av1dec, aom_image_t * img,
GstVideoFormat fmt)
{
if (!av1dec->output_state ||
av1dec->output_state->info.finfo->format != fmt ||
av1dec->output_state->info.width != img->d_w ||
av1dec->output_state->info.height != img->d_h) {
if (av1dec->output_state)
gst_video_codec_state_unref (av1dec->output_state);
av1dec->output_state =
gst_video_decoder_set_output_state (GST_VIDEO_DECODER (av1dec),
fmt, img->d_w, img->d_h, av1dec->input_state);
gst_video_decoder_negotiate (GST_VIDEO_DECODER (av1dec));
}
}
static void
gst_av1_dec_image_to_buffer (GstAV1Dec * dec, const aom_image_t * img,
GstBuffer * buffer)
{
int deststride, srcstride, height, width, line, comp, y;
guint8 *dest, *src;
GstVideoFrame frame;
GstVideoInfo *info = &dec->output_state->info;
if (!gst_video_frame_map (&frame, info, buffer, GST_MAP_WRITE)) {
GST_ERROR_OBJECT (dec, "Could not map video buffer");
return;
}
for (comp = 0; comp < 3; comp++) {
dest = GST_VIDEO_FRAME_COMP_DATA (&frame, comp);
src = img->planes[comp];
width =
GST_VIDEO_FRAME_COMP_WIDTH (&frame,
comp) * GST_VIDEO_FRAME_COMP_PSTRIDE (&frame, comp);
height = GST_VIDEO_FRAME_COMP_HEIGHT (&frame, comp);
deststride = GST_VIDEO_FRAME_COMP_STRIDE (&frame, comp);
srcstride = img->stride[comp];
if ((img->fmt & AOM_IMG_FMT_HIGHBITDEPTH) && img->bit_depth == 8) {
GST_TRACE_OBJECT (dec,
"HIGHBITDEPTH image with 8 bit_depth. Comp %d: %d != %d, copying "
"line by line.", comp, srcstride, deststride);
for (line = 0; line < height; line++) {
for (y = 0; y < width; y++) {
dest[y] = src[y * 2];
}
dest += deststride;
src += srcstride;
}
} else if (srcstride == deststride) {
GST_TRACE_OBJECT (dec, "Stride matches. Comp %d: %d, copying full plane",
comp, srcstride);
memcpy (dest, src, srcstride * height);
} else {
GST_TRACE_OBJECT (dec, "Stride mismatch. Comp %d: %d != %d, copying "
"line by line.", comp, srcstride, deststride);
for (line = 0; line < height; line++) {
memcpy (dest, src, width);
dest += deststride;
src += srcstride;
}
}
}
gst_video_frame_unmap (&frame);
}
gboolean
gst_av1_dec_get_valid_format (GstAV1Dec * dec, const aom_image_t * img,
GstVideoFormat * fmt)
{
switch (img->fmt) {
case AOM_IMG_FMT_I420:
case AOM_IMG_FMT_I42016:
if (img->bit_depth == 8) {
*fmt = img->monochrome ? GST_VIDEO_FORMAT_GRAY8 : GST_VIDEO_FORMAT_I420;
return TRUE;
} else if (img->bit_depth == 10) {
*fmt = AOM_FMT_TO_GST (I420_10);
return TRUE;
} else if (img->bit_depth == 12) {
*fmt = AOM_FMT_TO_GST (I420_12);
return TRUE;
}
GST_FIXME_OBJECT (dec,
"Please add a 4:2:0 planar %u bit depth frame format",
img->bit_depth);
GST_ELEMENT_WARNING (dec, STREAM, NOT_IMPLEMENTED, (NULL),
("Unsupported frame format - 4:2:0 planar %u bit depth",
img->bit_depth));
return FALSE;
case AOM_IMG_FMT_I422:
case AOM_IMG_FMT_I42216:
if (img->bit_depth == 8) {
*fmt = GST_VIDEO_FORMAT_Y42B;
return TRUE;
} else if (img->bit_depth == 10) {
*fmt = AOM_FMT_TO_GST (I422_10);
return TRUE;
} else if (img->bit_depth == 12) {
*fmt = AOM_FMT_TO_GST (I422_12);
return TRUE;
}
GST_FIXME_OBJECT (dec,
"Please add a 4:2:2 planar %u bit depth frame format",
img->bit_depth);
GST_ELEMENT_WARNING (dec, STREAM, NOT_IMPLEMENTED, (NULL),
("Unsupported frame format - 4:2:2 planar %u bit depth",
img->bit_depth));
return FALSE;
case AOM_IMG_FMT_I444:
case AOM_IMG_FMT_I44416:
if (img->bit_depth == 8) {
*fmt = GST_VIDEO_FORMAT_Y444;
return TRUE;
} else if (img->bit_depth == 10) {
*fmt = AOM_FMT_TO_GST (Y444_10);
return TRUE;
} else if (img->bit_depth == 12) {
*fmt = AOM_FMT_TO_GST (Y444_12);
return TRUE;
}
GST_FIXME_OBJECT (dec,
"Please add a 4:4:4 planar %u bit depth frame format",
img->bit_depth);
GST_ELEMENT_WARNING (dec, STREAM, NOT_IMPLEMENTED, (NULL),
("Unsupported frame format - 4:4:4 planar %u bit depth",
img->bit_depth));
return FALSE;
case AOM_IMG_FMT_YV12:
*fmt = GST_VIDEO_FORMAT_YV12;
return TRUE;
default:
return FALSE;
}
}
static GstFlowReturn
gst_av1_dec_handle_frame (GstVideoDecoder * dec, GstVideoCodecFrame * frame)
{
GstAV1Dec *av1dec = GST_AV1_DEC_CAST (dec);
GstFlowReturn ret;
GstMapInfo minfo;
aom_codec_err_t status;
aom_image_t *img;
aom_codec_iter_t iter = NULL;
GstVideoFormat fmt;
if (!av1dec->decoder_inited) {
ret = gst_av1_dec_open_codec (av1dec, frame);
if (ret == GST_FLOW_CUSTOM_SUCCESS_1) {
gst_video_decoder_drop_frame (dec, frame);
return GST_FLOW_OK;
} else if (ret != GST_FLOW_OK) {
gst_video_codec_frame_unref (frame);
return ret;
}
}
if (!gst_buffer_map (frame->input_buffer, &minfo, GST_MAP_READ)) {
GST_ERROR_OBJECT (dec, "Failed to map input buffer");
gst_video_codec_frame_unref (frame);
return GST_FLOW_ERROR;
}
status = aom_codec_decode (&av1dec->decoder, minfo.data, minfo.size, NULL);
gst_buffer_unmap (frame->input_buffer, &minfo);
if (status) {
GST_ELEMENT_ERROR (av1dec, LIBRARY, INIT,
("Failed to decode frame"), ("%s", ""));
gst_video_codec_frame_unref (frame);
return ret;
}
img = aom_codec_get_frame (&av1dec->decoder, &iter);
if (img) {
if (gst_av1_dec_get_valid_format (av1dec, img, &fmt) == FALSE) {
aom_img_free (img);
GST_ELEMENT_ERROR (dec, LIBRARY, ENCODE,
("Failed to decode frame"), ("Unsupported color format %d",
img->fmt));
gst_video_codec_frame_unref (frame);
return GST_FLOW_ERROR;
}
gst_av1_dec_handle_resolution_change (av1dec, img, fmt);
ret = gst_video_decoder_allocate_output_frame (dec, frame);
if (ret == GST_FLOW_OK) {
gst_av1_dec_image_to_buffer (av1dec, img, frame->output_buffer);
ret = gst_video_decoder_finish_frame (dec, frame);
} else {
gst_video_decoder_drop_frame (dec, frame);
}
aom_img_free (img);
while ((img = aom_codec_get_frame (&av1dec->decoder, &iter))) {
GST_WARNING_OBJECT (dec, "Multiple decoded frames... dropping");
aom_img_free (img);
}
} else {
GST_VIDEO_CODEC_FRAME_SET_DECODE_ONLY (frame);
gst_video_decoder_finish_frame (dec, frame);
}
return ret;
}

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/* GStreamer
* Copyright (C) <2017> Sean DuBois <sean@siobud.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GST_AV1_DEC_H__
#define __GST_AV1_DEC_H__
#include <gst/gst.h>
#include <gst/video/gstvideodecoder.h>
#include <aom/aomdx.h>
#include <aom/aom_decoder.h>
G_BEGIN_DECLS
#define GST_TYPE_AV1_DEC \
(gst_av1_dec_get_type())
#define GST_AV1_DEC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AV1_DEC,GstAV1Dec))
#define GST_AV1_DEC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AV1_DEC,GstAV1DecClass))
#define GST_IS_AV1_DEC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AV1_DEC))
#define GST_IS_AV1_DEC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AV1_DEC))
#define GST_AV1_DEC_GET_CLASS(obj) \
(G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_AV1_DEC, GstAV1DecClass))
#define GST_AV1_DEC_CAST(obj) \
((GstAV1Dec *) (obj))
typedef struct _GstAV1Dec GstAV1Dec;
typedef struct _GstAV1DecClass GstAV1DecClass;
struct _GstAV1Dec
{
GstVideoDecoder base_video_decoder;
gboolean decoder_inited;
aom_codec_ctx_t decoder;
GstVideoCodecState *input_state;
GstVideoCodecState *output_state;
};
struct _GstAV1DecClass
{
GstVideoDecoderClass parent_class;
/*supported aom algo*/
aom_codec_iface_t* codec_algo;
};
GType gst_av1_dec_get_type (void);
GST_ELEMENT_REGISTER_DECLARE (av1dec);
G_END_DECLS
#endif /* __GST_AV1_DEC_H__ */

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/* GStreamer
* Copyright (C) <2017> Sean DuBois <sean@siobud.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GST_AV1_ENC_H__
#define __GST_AV1_ENC_H__
#include <gst/gst.h>
#include <gst/video/video.h>
#include <gst/video/gstvideoencoder.h>
#include <aom/aom_codec.h>
#include <aom/aom_encoder.h>
#include <aom/aomcx.h>
G_BEGIN_DECLS
#define GST_TYPE_AV1_ENC \
(gst_av1_enc_get_type())
#define GST_AV1_ENC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AV1_ENC,GstAV1Enc))
#define GST_AV1_ENC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AV1_ENC,GstAV1EncClass))
#define GST_IS_AV1_ENC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AV1_ENC))
#define GST_IS_AV1_ENC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AV1_ENC))
#define GST_AV1_ENC_GET_CLASS(obj) \
(G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_AV1_ENC, GstAV1EncClass))
#define GST_AV1_ENC_CAST(obj) \
((GstAV1Enc *) (obj))
typedef struct _GstAV1Enc GstAV1Enc;
typedef struct _GstAV1EncClass GstAV1EncClass;
/**
* GstAV1EncResizeMode:
* @GST_AV1_ENC_RESIZE_NONE: No frame resizing allowed
* @GST_AV1_ENC_RESIZE_FIXED: All frames are coded at the specified scale
* @GST_AV1_ENC_RESIZE_RANDOM: All frames are coded at a random scale
*
* Frame resize mode
*/
typedef enum
{
GST_AV1_ENC_RESIZE_NONE = 0,
GST_AV1_ENC_RESIZE_FIXED = 1,
GST_AV1_ENC_RESIZE_RANDOM = 2,
GST_AV1_ENC_RESIZE_MODES
} GstAV1EncResizeMode;
/**
* GstAV1EncSuperresMode
* @GST_AV1_ENC_SUPERRES_NONE: No frame superres allowed
* @GST_AV1_ENC_SUPERRES_FIXED: All frames are coded at the specified scale and
* super-resolved
* @GST_AV1_ENC_SUPERRES_QTHRESH: Superres scale for a frame is determined based
* on q_index
*
* Frame super-resolution mode
*/
typedef enum
{
GST_AV1_ENC_SUPERRES_NONE = 0,
GST_AV1_ENC_SUPERRES_FIXED = 1,
GST_AV1_ENC_SUPERRES_RANDOM = 2,
GST_AV1_ENC_SUPERRES_QTHRESH = 3,
GST_AV1_ENC_SUPERRES_MODES
} GstAV1EncSuperresMode;
/**
* GstAV1EncEndUsageMode
* @GST_AV1_ENC_END_USAGE_VBR: Variable Bit Rate Mode
* @GST_AV1_ENC_END_USAGE_CBR: Constant Bit Rate Mode
* @GST_AV1_ENC_END_USAGE_CQ: Constrained Quality Mode
* @GST_AV1_ENC_END_USAGE_Q: Constant Quality Mode
*
* Rate control algorithm to use
*/
typedef enum
{
GST_AV1_ENC_END_USAGE_VBR = 0,
GST_AV1_ENC_END_USAGE_CBR = 1,
GST_AV1_ENC_END_USAGE_CQ = 2,
GST_AV1_ENC_END_USAGE_Q = 3,
GST_AV1_ENC_END_USAGE_MODES
} GstAV1EncEndUsageMode;
struct _GstAV1Enc
{
GstVideoEncoder base_video_encoder;
/* properties */
guint keyframe_dist;
gint cpu_used;
gint threads;
gboolean row_mt;
guint tile_columns;
guint tile_rows;
/* state */
gboolean encoder_inited;
GstVideoCodecState *input_state;
aom_codec_enc_cfg_t aom_cfg;
aom_codec_ctx_t encoder;
aom_img_fmt_t format;
GMutex encoder_lock;
gboolean target_bitrate_set;
};
struct _GstAV1EncClass
{
GstVideoEncoderClass parent_class;
/*supported aom algo*/
aom_codec_iface_t *codec_algo;
};
GType gst_av1_enc_get_type (void);
GST_ELEMENT_REGISTER_DECLARE (av1enc);
G_END_DECLS
#endif /* __GST_AV1_ENC_H__ */

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/* AV1
* Copyright (C) 2018 Wonchul Lee <chul0812@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstav1utils.h"
typedef struct
{
enum aom_img_fmt aom_format;
GstVideoFormat gst_format;
} AomImageFormat;
static const AomImageFormat img_formats[] = {
{AOM_IMG_FMT_YV12, GST_VIDEO_FORMAT_YV12},
{AOM_IMG_FMT_I420, GST_VIDEO_FORMAT_I420},
{AOM_IMG_FMT_I422, GST_VIDEO_FORMAT_Y42B},
{AOM_IMG_FMT_I444, GST_VIDEO_FORMAT_Y444},
};
const char *
gst_av1_get_error_name (aom_codec_err_t status)
{
switch (status) {
case AOM_CODEC_OK:
return "OK";
case AOM_CODEC_ERROR:
return "error";
case AOM_CODEC_MEM_ERROR:
return "mem error";
case AOM_CODEC_ABI_MISMATCH:
return "abi mismatch";
case AOM_CODEC_INCAPABLE:
return "incapable";
case AOM_CODEC_UNSUP_BITSTREAM:
return "unsupported bitstream";
case AOM_CODEC_UNSUP_FEATURE:
return "unsupported feature";
case AOM_CODEC_CORRUPT_FRAME:
return "corrupt frame";
case AOM_CODEC_INVALID_PARAM:
return "invalid parameter";
default:
return "unknown";
}
}
gint
gst_video_format_to_av1_img_format (GstVideoFormat format)
{
guint i;
for (i = 0; i < G_N_ELEMENTS (img_formats); i++)
if (img_formats[i].gst_format == format)
return img_formats[i].aom_format;
GST_WARNING ("av1 img format not found");
return -1;
}

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/* AV1
* Copyright (C) 2018 Wonchul Lee <chul0812@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include <gst/gst.h>
#include <gst/video/video.h>
#include <aom/aom_codec.h>
G_BEGIN_DECLS
const char *gst_av1_get_error_name (aom_codec_err_t status);
gint gst_video_format_to_av1_img_format (GstVideoFormat format);
G_END_DECLS

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aom_dep = dependency('aom', required: get_option('aom'))
if aom_dep.found()
gstaom = library('gstaom',
['gstaom.c', 'gstav1enc.c', 'gstav1dec.c', 'gstav1utils.c'],
c_args : gst_plugins_bad_args,
include_directories : [configinc],
dependencies : [gstpbutils_dep, gstvideo_dep, aom_dep],
install : true,
install_dir : plugins_install_dir,
)
pkgconfig.generate(gstaom, install_dir : plugins_pkgconfig_install_dir)
plugins += [gstaom]
endif

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/*
* Copyright (c) 2008 Benjamin Schmitz <vortex@wolpzone.de>
* Copyright (c) 2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef __GST_ASS_RENDER_H__
#define __GST_ASS_RENDER_H__
#include <gst/gst.h>
#include <gst/video/video.h>
#include <gst/video/video-overlay-composition.h>
#include <ass/ass.h>
#include <ass/ass_types.h>
G_BEGIN_DECLS
#if !defined(LIBASS_VERSION) || LIBASS_VERSION < 0x00907010
#define ASS_Library ass_library_t
#define ASS_Renderer ass_renderer_t
#define ASS_Track ass_track_t
#define ASS_Image ass_image_t
#endif
#define GST_TYPE_ASS_RENDER (gst_ass_render_get_type())
#define GST_ASS_RENDER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ASS_RENDER,GstAssRender))
#define GST_ASS_RENDER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ASS_RENDER,GstAssRenderClass))
#define GST_ASS_RENDER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), \
GST_TYPE_ASS_RENDER, GstAssRenderClass))
#define GST_IS_ASS_RENDER(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ASS_RENDER))
#define GST_IS_ASS_RENDER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_ASS_RENDER))
typedef struct _GstAssRender GstAssRender;
typedef struct _GstAssRenderClass GstAssRenderClass;
struct _GstAssRender
{
GstElement element;
GstPad *video_sinkpad, *text_sinkpad, *srcpad;
/* properties */
gboolean enable, embeddedfonts;
gboolean wait_text;
/* <private> */
GMutex lock;
GCond cond;
GstSegment video_segment;
gboolean video_flushing;
gboolean video_eos;
GstVideoInfo info;
GSList *subtitle_pending;
gboolean subtitle_flushing;
gboolean subtitle_eos;
GstSegment subtitle_segment;
GMutex ass_mutex;
ASS_Library *ass_library;
ASS_Renderer *ass_renderer;
ASS_Track *ass_track;
gint ass_frame_width, ass_frame_height;
gboolean renderer_init_ok, track_init_ok;
gboolean need_process;
/* overlay stuff */
GstVideoOverlayComposition *composition;
guint window_width, window_height;
gboolean attach_compo_to_buffer;
};
struct _GstAssRenderClass
{
GstElementClass parent_class;
};
GType gst_ass_render_get_type (void);
GST_ELEMENT_REGISTER_DECLARE (assrender);
G_END_DECLS
#endif

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ass_dep = dependency('libass', version : '>= 0.10.2', required : get_option('assrender'))
if ass_dep.found()
gstassrender = library('gstassrender',
'gstassrender.c',
c_args : gst_plugins_bad_args,
link_args : noseh_link_args,
include_directories : [configinc],
dependencies : [gstvideo_dep, ass_dep],
install : true,
install_dir : plugins_install_dir,
)
pkgconfig.generate(gstassrender, install_dir : plugins_pkgconfig_install_dir)
plugins += [gstassrender]
endif

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/*
* GStreamer AVTP Plugin
* Copyright (C) 2019 Intel Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later
* version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
/**
* plugin-avtp:
*
* ## Audio Video Transport Protocol (AVTP) Plugin
*
* The AVTP plugin implements typical Talker and Listener functionalities that
* can be leveraged by GStreamer-based applications in order to implement TSN
* audio/video applications.
*
* ### Dependencies
*
* The plugin uses libavtp to handle AVTP packetization. Libavtp source code can
* be found in https://github.com/AVnu/libavtp as well as instructions to build
* and install it.
*
* If libavtp isn't detected by configure, the plugin isn't built.
*
* ### The application/x-avtp mime type
*
* For valid AVTPDUs encapsulated in GstBuffers, we use the caps with mime type
* application/x-avtp.
*
* AVTP mime type is pretty simple and has no fields.
*
* ### gPTP Setup
*
* The Linuxptp project provides the ptp4l daemon, which synchronizes the PTP
* clock from NIC, and the pmc tool which communicates with ptp4l to get/set
* some runtime settings. The project also provides the phc2sys daemon which
* synchronizes the PTP clock and system clock.
*
* The AVTP plugin requires system clock is synchronized with PTP clock and
* TAI offset is properly set in the kernel. ptp4l and phc2sys can be set up
* in many different ways, below we provide an example that fullfils the plugin
* requirements. For further information check ptp4l(8) and phc2sys(8).
*
* In the following instructions, replace $IFNAME by your PTP capable NIC
* interface. The gPTP.cfg file mentioned below can be found in /usr/share/
* doc/linuxptp/ (depending on your distro).
*
* Synchronize PTP clock with PTP time:
*
* $ ptp4l -f gPTP.cfg -i $IFNAME
*
* Enable TAI offset to be automatically set by phc2sys:
*
* $ pmc -u -t 1 -b 0 'SET GRANDMASTER_SETTINGS_NP \
* clockClass 248 clockAccuracy 0xfe \
* offsetScaledLogVariance 0xffff \
* currentUtcOffset 37 leap61 0 leap59 0 \
* currentUtcOffsetValid 1 ptpTimescale 1 \
* timeTraceable 1 frequencyTraceable 0 timeSource 0xa0'
*
* Synchronize system clock with PTP clock:
*
* $ phc2sys -f gPTP.cfg -s $IFNAME -c CLOCK_REALTIME -w
*
* The commands above should be run on both AVTP Talker and Listener hosts.
*
* With clocks properly synchronized, applications using the AVTP plugin
* should use GstSytemClock with GST_CLOCK_TYPE_REALTIME as the pipeline
* clock.
*
* ### Clock Reference Format (CRF)
*
* Even though the systems are synchronized by PTP, it is possible that
* different talkers can send media streams which are out of phase or the
* frequencies do not exactly match. This is partcularly important when there
* is a single listener processing data from multiple talkers. The systems in
* this scenario can benefit if a common clock is distributed among the
* systems.
*
* This can be achieved by using the avtpcrfsync element which implements CRF
* as described in Chapter 10 of IEEE 1722-2016. avtpcrfcheck can also be used
* to validate that the adjustment conforms to the criteria specified in the
* spec. For further details, look at the documentation for the respective
* elements.
*
* ### Traffic Control Setup
*
* FQTSS (Forwarding and Queuing Enhancements for Time-Sensitive Streams) can be
* enabled on Linux with the help of the mqprio and cbs qdiscs provided by the
* Linux Traffic Control. Below we provide an example to configure those qdiscs
* in order to transmit a CVF H.264 stream 1280x720@30fps. For further
* information on how to configure these qdiscs check tc-mqprio(8) and
* tc-cbs(8) man pages.
*
* On the host that will run as AVTP Talker (pipeline that generates the video
* stream), run the following commands:
*
* Configure mpqrio qdisc (replace $MQPRIO_HANDLE_ID by an unused handle ID):
*
* $ tc qdisc add dev $IFNAME parent root handle $MQPRIO_HANDLE_ID mqprio \
* num_tc 3 map 2 2 1 0 2 2 2 2 2 2 2 2 2 2 2 2 \
* queues 1@0 1@1 2@2 hw 0
*
* Configure cbs qdisc (replace $CBS_HANDLE_ID by an unused handle ID):
*
* $ tc qdisc replace dev $IFNAME parent $MQPRIO_HANDLE_ID:1 \
* handle $CBS_HANDLE_ID cbs idleslope 27756 sendslope -972244 \
* hicredit 42 locredit -1499 offload 1
*
* Also, the plugin implements a transmission scheduling mechanism that relies
* on ETF qdisc so make sure it is properly configured in your system. It could
* be configured in many ways, below follows an example.
*
* $ tc qdisc add dev $IFNAME parent $CBS_HANDLE_ID:1 etf \
* clockid CLOCK_TAI delta 500000 offload
*
* No Traffic Control configuration is required at the host running as AVTP
* Listener.
*
* ### Capabilities
*
* The `avtpsink` and `avtpsrc` elements open `AF_PACKET` sockets, which require
* `CAP_NET_RAW` capability. Also, `avtpsink` needs `CAP_NET_ADMIN` to use ETF.
* Therefore, applications must have those capabilities in order to successfully
* use these elements. For instance, one can use:
*
* $ sudo setcap cap_net_raw,cap_net_admin+ep <application>
*
* Applications can drop these capabilities after the sockets are open, after
* `avtpsrc` or `avtpsink` elements transition to PAUSED state. See setcap(8)
* man page for more information.
*
* ### Elements configuration
*
* Each element has its own configuration properties, with some being common
* to several elements. Basic properties are:
*
* * streamid (avtpaafpay, avtpcvfpay, avtpaafdepay, avtpcvfdepay,
* avtpcrfsync, avtpcrfcheck): Stream ID associated with the stream.
*
* * ifname (avtpsink, avtpsrc, avtpcrfsync, avtpcrfcheck): Network interface
* used to send/receive AVTP packets.
*
* * dst-macaddr (avtpsink, avtpsrc): Destination MAC address for the stream.
*
* * priority (avtpsink): Priority used by the plugin to transmit AVTP
* traffic.
*
* * mtt (avtpaafpay, avtpcvfpay): Maximum Transit Time, in nanoseconds, as
* defined in AVTP spec.
*
* * tu (avtpaafpay, avtpcvfpay): Maximum Time Uncertainty, in nanoseconds, as
* defined in AVTP spec.
*
* * processing-deadline (avtpaafpay, avtpcvfpay, avtpsink): Maximum amount of
* time, in nanoseconds, that the pipeline is expected to process any
* buffer. This value should be in sync between the one used on the
* payloader and the sink, as this time is also taken into consideration to
* define the correct presentation time of the packets on the AVTP listener
* side. It should be as low as possible (zero if possible).
*
* * timestamp-mode (avtpaafpay): AAF timestamping mode, as defined in AVTP spec.
*
* * mtu (avtpcvfpay): Maximum Transmit Unit of the underlying network, used
* to determine when to fragment a CVF packet and how big it should be.
*
* Check each element documentation for more details.
*
*
* ### Running a sample pipeline
*
* The following pipelines uses debugutilsbad "clockselect" element to force
* the pipeline clock to be GstPtpClock. A real application would
* programmatically define GstPtpClock as the pipeline clock (see next section).
* It is also assumes that `gst-launch-1.0` has CAP_NET_RAW and CAP_NET_ADMIN
* capabilities.
*
* On the AVTP talker, the following pipeline can be used to generate an H.264
* stream to be sent via network using AVTP:
*
* $ gst-launch-1.0 clockselect. \( clockid=ptp \
* videotestsrc is-live=true ! clockoverlay ! x264enc ! \
* avtpcvfpay processing-deadline=20000000 ! \
* avtpcrfsync ifname=$IFNAME ! avtpsink ifname=$IFNAME \)
*
* On the AVTP listener host, the following pipeline can be used to get the
* AVTP stream, depacketize it and show it on the screen:
*
* $ gst-launch-1.0 clockselect. \( clockid=ptp avtpsrc ifname=$IFNAME ! \
* avtpcrfcheck ifname=$IFNAME ! avtpcvfdepay ! \
* vaapih264dec ! videoconvert ! clockoverlay halignment=right ! \
* queue ! autovideosink \)
*
* ### Pipeline clock
*
* The AVTP plugin elements require that the pipeline clock is in sync with
* the network PTP clock. As GStreamer has a GstPtpClock, using it should be
* the simplest way of achieving that.
*
* However, as there's no way of forcing a clock to a pipeline using
* gst-launch-1.0 application, even for quick tests, it's necessary to have
* an application. One can refer to GStreamer "hello world" application,
* remembering to set the pipeline clock to GstPtpClock before putting the
* pipeline on "PLAYING" state. Some code like:
*
* GstClock *clk = gst_ptp_clock_new("ptp-clock", 0);
* gst_clock_wait_for_sync(clk, GST_CLOCK_TIME_NONE);
* gst_pipeline_use_clock (GST_PIPELINE (pipeline), clk);
*
* Would do the trick.
*
* ### Disclaimer
*
* It's out of scope for the AVTP plugin to verify how it is invoked, should
* a malicious software do it for Denial of Service attempts, or other
* compromises attempts.
*
* Since: 1.18
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <gst/gst.h>
#include "gstavtpaafdepay.h"
#include "gstavtpaafpay.h"
#include "gstavtpcvfdepay.h"
#include "gstavtpcvfpay.h"
#include "gstavtpsink.h"
#include "gstavtpsrc.h"
#include "gstavtpcrfsync.h"
#include "gstavtpcrfcheck.h"
static gboolean
plugin_init (GstPlugin * plugin)
{
gboolean ret = FALSE;
ret |= GST_ELEMENT_REGISTER (avtpaafpay, plugin);
ret |= GST_ELEMENT_REGISTER (avtpaafdepay, plugin);
ret |= GST_ELEMENT_REGISTER (avtpsink, plugin);
ret |= GST_ELEMENT_REGISTER (avtpsrc, plugin);
ret |= GST_ELEMENT_REGISTER (avtpcvfpay, plugin);
ret |= GST_ELEMENT_REGISTER (avtpcvfdepay, plugin);
ret |= GST_ELEMENT_REGISTER (avtpcrfsync, plugin);
ret |= GST_ELEMENT_REGISTER (avtpcrfcheck, plugin);
return ret;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR,
avtp, "Audio/Video Transport Protocol (AVTP) plugin",
plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);

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/*
* GStreamer AVTP Plugin
* Copyright (C) 2019 Intel Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later
* version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
/**
* SECTION:element-avtpaafdepay
* @see_also: avtpaafpay
*
* Extract raw audio from AVTPDUs according to IEEE 1722-2016. For detailed
* information see https://standards.ieee.org/standard/1722-2016.html.
*
* <refsect2>
* <title>Example pipeline</title>
* |[
* gst-launch-1.0 avtpsrc ! avtpaafdepay ! autoaudiosink
* ]| This example pipeline will depayload AVTPDUs. Refer to the avtpaafpay
* example to create the AVTP stream.
* </refsect2>
*/
#include <avtp.h>
#include <avtp_aaf.h>
#include <gst/audio/audio-format.h>
#include "gstavtpaafdepay.h"
GST_DEBUG_CATEGORY_STATIC (avtpaafdepay_debug);
#define GST_CAT_DEFAULT (avtpaafdepay_debug)
static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-raw, "
"format = (string) { S16BE, S24BE, S32BE, F32BE }, "
"rate = (int) { 8000, 16000, 24000, 32000, 44100, 48000, 88200, 96000, 176400, 192000 }, "
"channels = " GST_AUDIO_CHANNELS_RANGE ", "
"layout = (string) interleaved")
);
G_DEFINE_TYPE (GstAvtpAafDepay, gst_avtp_aaf_depay,
GST_TYPE_AVTP_BASE_DEPAYLOAD);
GST_ELEMENT_REGISTER_DEFINE (avtpaafdepay, "avtpaafdepay", GST_RANK_NONE,
GST_TYPE_AVTP_AAF_DEPAY);
static GstFlowReturn gst_avtp_aaf_depay_chain (GstPad * pad, GstObject * parent,
GstBuffer * buffer);
static void
gst_avtp_aaf_depay_class_init (GstAvtpAafDepayClass * klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstAvtpBaseDepayloadClass *avtpbasedepayload_class =
GST_AVTP_BASE_DEPAYLOAD_CLASS (klass);
gst_element_class_add_static_pad_template (element_class, &src_template);
gst_element_class_set_static_metadata (element_class,
"AVTP Audio Format (AAF) depayloader",
"Codec/Depayloader/Network/AVTP",
"Extracts raw audio from AAF AVTPDUs",
"Andre Guedes <andre.guedes@intel.com>");
avtpbasedepayload_class->chain = GST_DEBUG_FUNCPTR (gst_avtp_aaf_depay_chain);
GST_DEBUG_CATEGORY_INIT (avtpaafdepay_debug, "avtpaafdepay", 0,
"AAF AVTP Depayloader");
}
static void
gst_avtp_aaf_depay_init (GstAvtpAafDepay * avtpaafdepay)
{
avtpaafdepay->channels = 0;
avtpaafdepay->depth = 0;
avtpaafdepay->rate = 0;
avtpaafdepay->format = 0;
}
static const gchar *
avtp_to_gst_format (int avtp_format)
{
GstAudioFormat gst_format;
switch (avtp_format) {
case AVTP_AAF_FORMAT_INT_16BIT:
gst_format = GST_AUDIO_FORMAT_S16BE;
break;
case AVTP_AAF_FORMAT_INT_24BIT:
gst_format = GST_AUDIO_FORMAT_S24BE;
break;
case AVTP_AAF_FORMAT_INT_32BIT:
gst_format = GST_AUDIO_FORMAT_S32BE;
break;
case AVTP_AAF_FORMAT_FLOAT_32BIT:
gst_format = GST_AUDIO_FORMAT_F32BE;
break;
default:
gst_format = GST_AUDIO_FORMAT_UNKNOWN;
break;
}
return gst_audio_format_to_string (gst_format);
}
static gint
avtp_to_gst_rate (int rate)
{
switch (rate) {
case AVTP_AAF_PCM_NSR_8KHZ:
return 8000;
case AVTP_AAF_PCM_NSR_16KHZ:
return 16000;
case AVTP_AAF_PCM_NSR_24KHZ:
return 24000;
case AVTP_AAF_PCM_NSR_32KHZ:
return 32000;
case AVTP_AAF_PCM_NSR_44_1KHZ:
return 44100;
case AVTP_AAF_PCM_NSR_48KHZ:
return 48000;
case AVTP_AAF_PCM_NSR_88_2KHZ:
return 88200;
case AVTP_AAF_PCM_NSR_96KHZ:
return 96000;
case AVTP_AAF_PCM_NSR_176_4KHZ:
return 176400;
case AVTP_AAF_PCM_NSR_192KHZ:
return 192000;
default:
return 0;
}
}
static gboolean
gst_avtp_aaf_depay_push_caps_event (GstAvtpAafDepay * avtpaafdepay,
gint rate, gint depth, gint format, gint channels)
{
GstCaps *caps;
GstEvent *event;
GstAvtpBaseDepayload *avtpbasedepayload =
GST_AVTP_BASE_DEPAYLOAD (avtpaafdepay);
caps = gst_caps_new_simple ("audio/x-raw",
"format", G_TYPE_STRING, avtp_to_gst_format (format),
"rate", G_TYPE_INT, avtp_to_gst_rate (rate),
"channels", G_TYPE_INT, channels,
"layout", G_TYPE_STRING, "interleaved", NULL);
event = gst_event_new_caps (caps);
if (!gst_pad_push_event (avtpbasedepayload->srcpad, event)) {
GST_ERROR_OBJECT (avtpaafdepay, "Failed to push CAPS event");
gst_caps_unref (caps);
return FALSE;
}
GST_DEBUG_OBJECT (avtpaafdepay, "CAPS event pushed %" GST_PTR_FORMAT, caps);
avtpaafdepay->rate = rate;
avtpaafdepay->depth = depth;
avtpaafdepay->format = format;
avtpaafdepay->channels = channels;
gst_caps_unref (caps);
return TRUE;
}
static gboolean
gst_avtp_aaf_depay_are_audio_features_valid (GstAvtpAafDepay * avtpaafdepay,
guint64 rate, guint64 depth, guint64 format, guint64 channels)
{
if (G_UNLIKELY (rate != avtpaafdepay->rate)) {
GST_INFO_OBJECT (avtpaafdepay, "Rate doesn't match, disarding buffer");
return FALSE;
}
if (G_UNLIKELY (depth != avtpaafdepay->depth)) {
GST_INFO_OBJECT (avtpaafdepay, "Bit depth doesn't match, disarding buffer");
return FALSE;
}
if (G_UNLIKELY (format != avtpaafdepay->format)) {
GST_INFO_OBJECT (avtpaafdepay,
"Sample format doesn't match, disarding buffer");
return FALSE;
}
if (G_UNLIKELY (channels != avtpaafdepay->channels)) {
GST_INFO_OBJECT (avtpaafdepay,
"Number of channels doesn't match, disarding buffer");
return FALSE;
}
return TRUE;
}
static GstFlowReturn
gst_avtp_aaf_depay_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
{
int res;
GstMapInfo info;
guint32 subtype, version;
GstClockTime ptime;
GstBuffer *subbuffer;
struct avtp_stream_pdu *pdu;
guint64 channels, depth, rate, format, tstamp, seqnum, streamid,
streamid_valid, data_len;
GstAvtpBaseDepayload *avtpbasedepayload = GST_AVTP_BASE_DEPAYLOAD (parent);
GstAvtpAafDepay *avtpaafdepay = GST_AVTP_AAF_DEPAY (avtpbasedepayload);
if (!gst_buffer_map (buffer, &info, GST_MAP_READ)) {
GST_ELEMENT_ERROR (avtpaafdepay, RESOURCE, READ, ("Failed to map memory"),
(NULL));
gst_buffer_unref (buffer);
return GST_FLOW_ERROR;
}
if (info.size < sizeof (struct avtp_stream_pdu)) {
GST_DEBUG_OBJECT (avtpaafdepay, "Malformed AVTPDU, discarding it");
gst_buffer_unmap (buffer, &info);
goto discard;
}
pdu = (struct avtp_stream_pdu *) info.data;
res = avtp_aaf_pdu_get (pdu, AVTP_AAF_FIELD_NSR, &rate);
g_assert (res == 0);
res = avtp_aaf_pdu_get (pdu, AVTP_AAF_FIELD_FORMAT, &format);
g_assert (res == 0);
res = avtp_aaf_pdu_get (pdu, AVTP_AAF_FIELD_SEQ_NUM, &seqnum);
g_assert (res == 0);
res = avtp_aaf_pdu_get (pdu, AVTP_AAF_FIELD_BIT_DEPTH, &depth);
g_assert (res == 0);
res = avtp_aaf_pdu_get (pdu, AVTP_AAF_FIELD_TIMESTAMP, &tstamp);
g_assert (res == 0);
res = avtp_aaf_pdu_get (pdu, AVTP_AAF_FIELD_SV, &streamid_valid);
g_assert (res == 0);
res = avtp_aaf_pdu_get (pdu, AVTP_AAF_FIELD_STREAM_ID, &streamid);
g_assert (res == 0);
res = avtp_aaf_pdu_get (pdu, AVTP_AAF_FIELD_CHAN_PER_FRAME, &channels);
g_assert (res == 0);
res = avtp_aaf_pdu_get (pdu, AVTP_AAF_FIELD_STREAM_DATA_LEN, &data_len);
g_assert (res == 0);
res = avtp_pdu_get ((struct avtp_common_pdu *) pdu, AVTP_FIELD_SUBTYPE,
&subtype);
g_assert (res == 0);
res = avtp_pdu_get ((struct avtp_common_pdu *) pdu, AVTP_FIELD_VERSION,
&version);
g_assert (res == 0);
gst_buffer_unmap (buffer, &info);
if (subtype != AVTP_SUBTYPE_AAF) {
GST_DEBUG_OBJECT (avtpaafdepay, "Subtype doesn't match, discarding buffer");
goto discard;
}
if (version != 0) {
GST_DEBUG_OBJECT (avtpaafdepay, "Version doesn't match, discarding buffer");
goto discard;
}
if (streamid_valid != 1 || streamid != avtpbasedepayload->streamid) {
GST_DEBUG_OBJECT (avtpaafdepay, "Invalid StreamID, discarding buffer");
goto discard;
}
if (gst_buffer_get_size (buffer) < sizeof (*pdu) + data_len) {
GST_DEBUG_OBJECT (avtpaafdepay, "Incomplete AVTPDU, discarding buffer");
goto discard;
}
if (G_UNLIKELY (!gst_pad_has_current_caps (avtpbasedepayload->srcpad))) {
if (!gst_avtp_aaf_depay_push_caps_event (avtpaafdepay, rate, depth, format,
channels)) {
gst_buffer_unref (buffer);
return GST_FLOW_NOT_NEGOTIATED;
}
if (!gst_avtp_base_depayload_push_segment_event (avtpbasedepayload, tstamp)) {
gst_buffer_unref (buffer);
return GST_FLOW_ERROR;
}
avtpbasedepayload->seqnum = seqnum;
}
if (G_UNLIKELY (!gst_avtp_aaf_depay_are_audio_features_valid (avtpaafdepay,
rate, depth, format, channels)))
goto discard;
if (seqnum != avtpbasedepayload->seqnum) {
GST_INFO_OBJECT (avtpaafdepay, "Sequence number mismatch: expected %u"
" received %" G_GUINT64_FORMAT, avtpbasedepayload->seqnum, seqnum);
avtpbasedepayload->seqnum = seqnum;
}
avtpbasedepayload->seqnum++;
ptime = gst_avtp_base_depayload_tstamp_to_ptime (avtpbasedepayload, tstamp,
avtpbasedepayload->prev_ptime);
subbuffer = gst_buffer_copy_region (buffer, GST_BUFFER_COPY_ALL,
sizeof (struct avtp_stream_pdu), data_len);
GST_BUFFER_PTS (subbuffer) = ptime;
GST_BUFFER_DTS (subbuffer) = ptime;
avtpbasedepayload->prev_ptime = ptime;
gst_buffer_unref (buffer);
return gst_pad_push (avtpbasedepayload->srcpad, subbuffer);
discard:
gst_buffer_unref (buffer);
return GST_FLOW_OK;
}

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/*
* GStreamer AVTP Plugin
* Copyright (C) 2019 Intel Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later
* version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#ifndef __GST_AVTP_AAF_DEPAY_H__
#define __GST_AVTP_AAF_DEPAY_H__
#include <gst/gst.h>
#include "gstavtpbasedepayload.h"
G_BEGIN_DECLS
#define GST_TYPE_AVTP_AAF_DEPAY (gst_avtp_aaf_depay_get_type())
#define GST_AVTP_AAF_DEPAY(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AVTP_AAF_DEPAY,GstAvtpAafDepay))
#define GST_AVTP_AAF_DEPAY_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AVTP_AAF_DEPAY,GstAvtpAafDepayClass))
#define GST_IS_AVTP_AAF_DEPAY(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AVTP_AAF_DEPAY))
#define GST_IS_AVTP_AAF_DEPAY_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AVTP_AAF_DEPAY))
typedef struct _GstAvtpAafDepay GstAvtpAafDepay;
typedef struct _GstAvtpAafDepayClass GstAvtpAafDepayClass;
struct _GstAvtpAafDepay
{
GstAvtpBaseDepayload depayload;
gint channels;
gint depth;
gint rate;
gint format;
};
struct _GstAvtpAafDepayClass
{
GstAvtpBaseDepayloadClass parent_class;
};
GType gst_avtp_aaf_depay_get_type (void);
GST_ELEMENT_REGISTER_DECLARE (avtpaafdepay);
G_END_DECLS
#endif /* __GST_AVTP_AAF_DEPAY_H__ */

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/*
* GStreamer AVTP Plugin
* Copyright (C) 2019 Intel Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later
* version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
/**
* SECTION:element-avtpaafpay
* @see_also: avtpaafdepay
*
* Payload raw audio into AVTPDUs according to IEEE 1722-2016. For detailed
* information see https://standards.ieee.org/standard/1722-2016.html.
*
* <refsect2>
* <title>Example pipeline</title>
* |[
* gst-launch-1.0 audiotestsrc ! audioconvert ! avtpaafpay ! avtpsink
* ]| This example pipeline will payload raw audio. Refer to the avtpaafdepay
* example to depayload and play the AVTP stream.
* </refsect2>
*/
#include <avtp.h>
#include <avtp_aaf.h>
#include <gst/audio/audio-format.h>
#include "gstavtpaafpay.h"
GST_DEBUG_CATEGORY_STATIC (avtpaafpay_debug);
#define GST_CAT_DEFAULT (avtpaafpay_debug)
#define DEFAULT_TIMESTAMP_MODE GST_AVTP_AAF_TIMESTAMP_MODE_NORMAL
enum
{
PROP_0,
PROP_TIMESTAMP_MODE,
};
static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-raw, "
"format = (string) { S16BE, S24BE, S32BE, F32BE }, "
"rate = (int) { 8000, 16000, 24000, 32000, 44100, 48000, 88200, 96000, 176400, 192000 }, "
"channels = " GST_AUDIO_CHANNELS_RANGE ", "
"layout = (string) interleaved")
);
#define GST_TYPE_AVTP_AAF_TIMESTAMP_MODE (gst_avtp_aaf_timestamp_mode_get_type())
static GType
gst_avtp_aaf_timestamp_mode_get_type (void)
{
static const GEnumValue timestamp_mode_types[] = {
{GST_AVTP_AAF_TIMESTAMP_MODE_NORMAL, "Normal timestamping mode", "normal"},
{GST_AVTP_AAF_TIMESTAMP_MODE_SPARSE, "Sparse timestamping mode", "sparse"},
{0, NULL, NULL},
};
static gsize id = 0;
if (g_once_init_enter (&id)) {
GType new_type;
new_type =
g_enum_register_static ("GstAvtpAafTimestampMode",
timestamp_mode_types);
g_once_init_leave (&id, (gsize) new_type);
}
return (GType) id;
}
#define gst_avtp_aaf_pay_parent_class parent_class
G_DEFINE_TYPE (GstAvtpAafPay, gst_avtp_aaf_pay, GST_TYPE_AVTP_BASE_PAYLOAD);
GST_ELEMENT_REGISTER_DEFINE (avtpaafpay, "avtpaafpay", GST_RANK_NONE,
GST_TYPE_AVTP_AAF_PAY);
static void gst_avtp_aaf_pay_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_avtp_aaf_pay_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstStateChangeReturn gst_avtp_aaf_pay_change_state (GstElement * element,
GstStateChange transition);
static GstFlowReturn gst_avtp_aaf_pay_chain (GstPad * pad, GstObject * parent,
GstBuffer * buffer);
static gboolean gst_avtp_aaf_pay_sink_event (GstPad * pad, GstObject * parent,
GstEvent * event);
static void
gst_avtp_aaf_pay_class_init (GstAvtpAafPayClass * klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstAvtpBasePayloadClass *avtpbasepayload_class =
GST_AVTP_BASE_PAYLOAD_CLASS (klass);
object_class->set_property = gst_avtp_aaf_pay_set_property;
object_class->get_property = gst_avtp_aaf_pay_get_property;
g_object_class_install_property (object_class, PROP_TIMESTAMP_MODE,
g_param_spec_enum ("timestamp-mode", "Timestamping Mode",
"AAF timestamping mode", GST_TYPE_AVTP_AAF_TIMESTAMP_MODE,
DEFAULT_TIMESTAMP_MODE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_PAUSED));
element_class->change_state =
GST_DEBUG_FUNCPTR (gst_avtp_aaf_pay_change_state);
gst_element_class_add_static_pad_template (element_class, &sink_template);
gst_element_class_set_static_metadata (element_class,
"AVTP Audio Format (AAF) payloader",
"Codec/Payloader/Network/AVTP",
"Payload-encode Raw audio into AAF AVTPDU (IEEE 1722)",
"Andre Guedes <andre.guedes@intel.com>");
avtpbasepayload_class->chain = GST_DEBUG_FUNCPTR (gst_avtp_aaf_pay_chain);
avtpbasepayload_class->sink_event =
GST_DEBUG_FUNCPTR (gst_avtp_aaf_pay_sink_event);
GST_DEBUG_CATEGORY_INIT (avtpaafpay_debug, "avtpaafpay", 0,
"AAF AVTP Payloader");
gst_type_mark_as_plugin_api (GST_TYPE_AVTP_AAF_TIMESTAMP_MODE, 0);
}
static void
gst_avtp_aaf_pay_init (GstAvtpAafPay * avtpaafpay)
{
avtpaafpay->timestamp_mode = DEFAULT_TIMESTAMP_MODE;
avtpaafpay->header = NULL;
avtpaafpay->channels = 0;
avtpaafpay->depth = 0;
avtpaafpay->rate = 0;
avtpaafpay->format = 0;
}
static void
gst_avtp_aaf_pay_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstAvtpAafPay *avtpaafpay = GST_AVTP_AAF_PAY (object);
GST_DEBUG_OBJECT (avtpaafpay, "prop_id %u", prop_id);
switch (prop_id) {
case PROP_TIMESTAMP_MODE:
avtpaafpay->timestamp_mode = g_value_get_enum (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_avtp_aaf_pay_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstAvtpAafPay *avtpaafpay = GST_AVTP_AAF_PAY (object);
GST_DEBUG_OBJECT (avtpaafpay, "prop_id %u", prop_id);
switch (prop_id) {
case PROP_TIMESTAMP_MODE:
g_value_set_enum (value, avtpaafpay->timestamp_mode);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstStateChangeReturn
gst_avtp_aaf_pay_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn ret;
GstAvtpAafPay *avtpaafpay = GST_AVTP_AAF_PAY (element);
GST_DEBUG_OBJECT (avtpaafpay, "transition %d", transition);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:{
GstMemory *mem;
mem = gst_allocator_alloc (NULL, sizeof (struct avtp_stream_pdu), NULL);
if (!mem) {
GST_ERROR_OBJECT (avtpaafpay, "Failed to allocate GstMemory");
return GST_STATE_CHANGE_FAILURE;
}
avtpaafpay->header = mem;
break;
}
case GST_STATE_CHANGE_READY_TO_PAUSED:{
int res;
GstMapInfo info;
struct avtp_stream_pdu *pdu;
GstMemory *mem = avtpaafpay->header;
GstAvtpBasePayload *avtpbasepayload = GST_AVTP_BASE_PAYLOAD (element);
if (!gst_memory_map (mem, &info, GST_MAP_WRITE)) {
GST_ERROR_OBJECT (avtpaafpay, "Failed to map GstMemory");
return GST_STATE_CHANGE_FAILURE;
}
pdu = (struct avtp_stream_pdu *) info.data;
res = avtp_aaf_pdu_init (pdu);
g_assert (res == 0);
res = avtp_aaf_pdu_set (pdu, AVTP_AAF_FIELD_MR, 0);
g_assert (res == 0);
res = avtp_aaf_pdu_set (pdu, AVTP_AAF_FIELD_TV, 1);
g_assert (res == 0);
res = avtp_aaf_pdu_set (pdu, AVTP_AAF_FIELD_TU, 0);
g_assert (res == 0);
res = avtp_aaf_pdu_set (pdu, AVTP_AAF_FIELD_STREAM_ID,
avtpbasepayload->streamid);
g_assert (res == 0);
res =
avtp_aaf_pdu_set (pdu, AVTP_AAF_FIELD_SP, avtpaafpay->timestamp_mode);
g_assert (res == 0);
gst_memory_unmap (mem, &info);
break;
}
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
if (ret == GST_STATE_CHANGE_FAILURE) {
GST_ERROR_OBJECT (avtpaafpay, "Parent failed to handle state transition");
return ret;
}
switch (transition) {
case GST_STATE_CHANGE_READY_TO_NULL:
gst_memory_unref (avtpaafpay->header);
break;
default:
break;
}
return ret;
}
static GstFlowReturn
gst_avtp_aaf_pay_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
{
int res;
GstMemory *mem;
GstMapInfo info;
gsize data_len;
GstClockTime ptime;
struct avtp_stream_pdu *pdu;
GstAvtpAafPay *avtpaafpay = GST_AVTP_AAF_PAY (parent);
GstAvtpBasePayload *avtpbasepayload = GST_AVTP_BASE_PAYLOAD (parent);
ptime = gst_avtp_base_payload_calc_ptime (avtpbasepayload, buffer);
data_len = gst_buffer_get_size (buffer);
mem = gst_memory_copy (avtpaafpay->header, 0, -1);
if (!gst_memory_map (mem, &info, GST_MAP_WRITE)) {
GST_ELEMENT_ERROR (avtpaafpay, RESOURCE, WRITE, ("Failed to map memory"),
(NULL));
gst_buffer_unref (buffer);
return GST_FLOW_ERROR;
}
pdu = (struct avtp_stream_pdu *) info.data;
res = avtp_aaf_pdu_set (pdu, AVTP_AAF_FIELD_TIMESTAMP, ptime);
g_assert (res == 0);
res = avtp_aaf_pdu_set (pdu, AVTP_AAF_FIELD_NSR, avtpaafpay->rate);
g_assert (res == 0);
res = avtp_aaf_pdu_set (pdu, AVTP_AAF_FIELD_FORMAT, avtpaafpay->format);
g_assert (res == 0);
res = avtp_aaf_pdu_set (pdu, AVTP_AAF_FIELD_BIT_DEPTH, avtpaafpay->depth);
g_assert (res == 0);
res = avtp_aaf_pdu_set (pdu, AVTP_AAF_FIELD_STREAM_DATA_LEN, data_len);
g_assert (res == 0);
res = avtp_aaf_pdu_set (pdu, AVTP_AAF_FIELD_CHAN_PER_FRAME,
avtpaafpay->channels);
g_assert (res == 0);
res = avtp_aaf_pdu_set (pdu, AVTP_AAF_FIELD_SEQ_NUM,
avtpbasepayload->seqnum++);
g_assert (res == 0);
gst_memory_unmap (mem, &info);
gst_buffer_prepend_memory (buffer, mem);
return gst_pad_push (avtpbasepayload->srcpad, buffer);
}
static int
gst_to_avtp_rate (gint rate)
{
switch (rate) {
case 8000:
return AVTP_AAF_PCM_NSR_8KHZ;
case 16000:
return AVTP_AAF_PCM_NSR_16KHZ;
case 24000:
return AVTP_AAF_PCM_NSR_24KHZ;
case 32000:
return AVTP_AAF_PCM_NSR_32KHZ;
case 44100:
return AVTP_AAF_PCM_NSR_44_1KHZ;
case 48000:
return AVTP_AAF_PCM_NSR_48KHZ;
case 88200:
return AVTP_AAF_PCM_NSR_88_2KHZ;
case 96000:
return AVTP_AAF_PCM_NSR_96KHZ;
case 176400:
return AVTP_AAF_PCM_NSR_176_4KHZ;
case 192000:
return AVTP_AAF_PCM_NSR_192KHZ;
default:
return AVTP_AAF_PCM_NSR_USER;
}
}
static int
gst_to_avtp_format (GstAudioFormat format)
{
switch (format) {
case GST_AUDIO_FORMAT_S16BE:
return AVTP_AAF_FORMAT_INT_16BIT;
case GST_AUDIO_FORMAT_S24BE:
return AVTP_AAF_FORMAT_INT_24BIT;
case GST_AUDIO_FORMAT_S32BE:
return AVTP_AAF_FORMAT_INT_32BIT;
case GST_AUDIO_FORMAT_F32BE:
return AVTP_AAF_FORMAT_FLOAT_32BIT;
default:
return AVTP_AAF_FORMAT_USER;
}
}
static gboolean
gst_avtp_aaf_pay_new_caps (GstAvtpAafPay * avtpaafpay, GstCaps * caps)
{
GstAudioInfo info;
gst_audio_info_init (&info);
if (!gst_audio_info_from_caps (&info, caps)) {
GST_ERROR_OBJECT (avtpaafpay, "Failed to get info from caps");
return FALSE;
}
avtpaafpay->channels = info.channels;
avtpaafpay->depth = info.finfo->depth;
avtpaafpay->rate = gst_to_avtp_rate (info.rate);
avtpaafpay->format = gst_to_avtp_format (info.finfo->format);
GST_DEBUG_OBJECT (avtpaafpay, "channels %d, depth %d, rate %d, format %s",
info.channels, info.finfo->depth, info.rate,
gst_audio_format_to_string (info.finfo->format));
return TRUE;
}
static gboolean
gst_avtp_aaf_pay_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
{
GstCaps *caps;
GstAvtpAafPay *avtpaafpay = GST_AVTP_AAF_PAY (parent);
gboolean ret;
GST_DEBUG_OBJECT (avtpaafpay, "event %s", GST_EVENT_TYPE_NAME (event));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_CAPS:
gst_event_parse_caps (event, &caps);
ret = gst_avtp_aaf_pay_new_caps (avtpaafpay, caps);
gst_event_unref (event);
return ret;
default:
return GST_AVTP_BASE_PAYLOAD_CLASS (parent_class)->sink_event (pad,
parent, event);
}
}

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/*
* GStreamer AVTP Plugin
* Copyright (C) 2019 Intel Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later
* version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#ifndef __GST_AVTP_AAF_PAY_H__
#define __GST_AVTP_AAF_PAY_H__
#include <gst/gst.h>
#include "gstavtpbasepayload.h"
G_BEGIN_DECLS
#define GST_TYPE_AVTP_AAF_PAY (gst_avtp_aaf_pay_get_type())
#define GST_AVTP_AAF_PAY(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AVTP_AAF_PAY,GstAvtpAafPay))
#define GST_AVTP_AAF_PAY_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AVTP_AAF_PAY,GstAvtpAafPayClass))
#define GST_IS_AVTP_AAF_PAY(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AVTP_AAF_PAY))
#define GST_IS_AVTP_AAF_PAY_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AVTP_AAF_PAY))
typedef struct _GstAvtpAafPay GstAvtpAafPay;
typedef struct _GstAvtpAafPayClass GstAvtpAafPayClass;
typedef enum _GstAvtpAafTimestampMode GstAvtpAafTimestampMode;
enum _GstAvtpAafTimestampMode {
GST_AVTP_AAF_TIMESTAMP_MODE_NORMAL,
GST_AVTP_AAF_TIMESTAMP_MODE_SPARSE,
};
struct _GstAvtpAafPay
{
GstAvtpBasePayload payload;
GstAvtpAafTimestampMode timestamp_mode;
GstMemory *header;
gint channels;
gint depth;
gint rate;
gint format;
};
struct _GstAvtpAafPayClass
{
GstAvtpBasePayloadClass parent_class;
};
GType gst_avtp_aaf_pay_get_type (void);
GST_ELEMENT_REGISTER_DECLARE (avtpaafpay);
G_END_DECLS
#endif /* __GST_AVTP_AAF_PAY_H__ */

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/*
* GStreamer AVTP Plugin
* Copyright (C) 2019 Intel Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later
* version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#include "gstavtpbasedepayload.h"
GST_DEBUG_CATEGORY_STATIC (avtpbasedepayload_debug);
#define GST_CAT_DEFAULT (avtpbasedepayload_debug)
#define DEFAULT_STREAMID 0xAABBCCDDEEFF0000
enum
{
PROP_0,
PROP_STREAMID,
};
static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("application/x-avtp")
);
static void gst_avtp_base_depayload_class_init (GstAvtpBaseDepayloadClass *
klass);
static void gst_avtp_base_depayload_init (GstAvtpBaseDepayload *
avtpbasedepayload, gpointer g_class);
static void gst_avtp_base_depayload_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_avtp_base_depayload_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static gboolean gst_avtp_base_depayload_sink_event (GstPad * pad,
GstObject * parent, GstEvent * event);
GType
gst_avtp_base_depayload_get_type (void)
{
static GType avtpbasedepayload_type = 0;
if (g_once_init_enter ((gsize *) & avtpbasedepayload_type)) {
static const GTypeInfo avtpbasedepayload_info = {
sizeof (GstAvtpBaseDepayloadClass),
NULL,
NULL,
(GClassInitFunc) gst_avtp_base_depayload_class_init,
NULL,
NULL,
sizeof (GstAvtpBaseDepayload),
0,
(GInstanceInitFunc) gst_avtp_base_depayload_init,
};
GType _type;
_type = g_type_register_static (GST_TYPE_ELEMENT, "GstAvtpBaseDepayload",
&avtpbasedepayload_info, G_TYPE_FLAG_ABSTRACT);
g_once_init_leave ((gsize *) & avtpbasedepayload_type, _type);
}
return avtpbasedepayload_type;
}
static void
gst_avtp_base_depayload_class_init (GstAvtpBaseDepayloadClass * klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->set_property = gst_avtp_base_depayload_set_property;
object_class->get_property = gst_avtp_base_depayload_get_property;
g_object_class_install_property (object_class, PROP_STREAMID,
g_param_spec_uint64 ("streamid", "Stream ID",
"Stream ID associated with the AVTPDU", 0, G_MAXUINT64,
DEFAULT_STREAMID, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_PAUSED));
klass->chain = NULL;
klass->sink_event = GST_DEBUG_FUNCPTR (gst_avtp_base_depayload_sink_event);
GST_DEBUG_CATEGORY_INIT (avtpbasedepayload_debug, "avtpbasedepayload", 0,
"Base class for AVTP depayloaders");
gst_type_mark_as_plugin_api (GST_TYPE_AVTP_BASE_DEPAYLOAD, 0);
}
static void
gst_avtp_base_depayload_init (GstAvtpBaseDepayload * avtpbasedepayload,
gpointer g_class)
{
GstPadTemplate *templ;
GstElement *element = GST_ELEMENT (avtpbasedepayload);
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
GstAvtpBaseDepayloadClass *avtpbasedepayload_class =
GST_AVTP_BASE_DEPAYLOAD_CLASS (g_class);
g_assert (avtpbasedepayload_class->chain != NULL);
templ = gst_element_class_get_pad_template (element_class, "src");
g_assert (templ != NULL);
avtpbasedepayload->srcpad = gst_pad_new_from_template (templ, "src");
gst_pad_use_fixed_caps (avtpbasedepayload->srcpad);
gst_element_add_pad (element, avtpbasedepayload->srcpad);
avtpbasedepayload->sinkpad =
gst_pad_new_from_static_template (&sink_template, "sink");
gst_pad_set_chain_function (avtpbasedepayload->sinkpad,
avtpbasedepayload_class->chain);
gst_pad_set_event_function (avtpbasedepayload->sinkpad,
avtpbasedepayload_class->sink_event);
gst_element_add_pad (element, avtpbasedepayload->sinkpad);
avtpbasedepayload->streamid = DEFAULT_STREAMID;
avtpbasedepayload->prev_ptime = 0;
avtpbasedepayload->seqnum = 0;
}
static void
gst_avtp_base_depayload_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstAvtpBaseDepayload *avtpbasedepayload = GST_AVTP_BASE_DEPAYLOAD (object);
GST_DEBUG_OBJECT (avtpbasedepayload, "prop_id %u", prop_id);
switch (prop_id) {
case PROP_STREAMID:
avtpbasedepayload->streamid = g_value_get_uint64 (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_avtp_base_depayload_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstAvtpBaseDepayload *avtpbasedepayload = GST_AVTP_BASE_DEPAYLOAD (object);
GST_DEBUG_OBJECT (avtpbasedepayload, "prop_id %u", prop_id);
switch (prop_id) {
case PROP_STREAMID:
g_value_set_uint64 (value, avtpbasedepayload->streamid);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
gst_avtp_base_depayload_sink_event (GstPad * pad, GstObject * parent,
GstEvent * event)
{
GstAvtpBaseDepayload *avtpbasedepayload = GST_AVTP_BASE_DEPAYLOAD (parent);
GST_DEBUG_OBJECT (avtpbasedepayload, "event %s", GST_EVENT_TYPE_NAME (event));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEGMENT:
/* Once the first AVTPDU is received, proper CAPS and SEGMENT events are
* pushed downstream. These events are expected to be pushed in that
* order by GStreamer. Since the default handling implemented by
* gst_pad_event_default() pushes the SEGMENT event downstream right
* away, it doesn't work for us and we have to handle it ourselves.
*
* Our handling is very straightforward: we discard this event and send
* a proper segment event once the first AVTPDU is received. See
* gst_avtp_base_depayload_push_segment_event() for more information.
*/
gst_event_unref (event);
return TRUE;
default:
return gst_pad_event_default (pad, parent, event);
}
}
/* Helper function to convert AVTP timestamp to AVTP presentation time. Since
* AVTP timestamp represents the lower 32-bit part from AVTP presentation time,
* the helper requires a reference time ('ref' argument) to convert it properly.
* The reference time must be in gstreamer clock-time coordinate.
*/
GstClockTime
gst_avtp_base_depayload_tstamp_to_ptime (GstAvtpBaseDepayload *
avtpbasedepayload, guint32 tstamp, GstClockTime ref)
{
GstClockTime ptime;
ptime = (ref & 0xFFFFFFFF00000000ULL) | tstamp;
/* If 'ptime' is less than the our reference time, it means the higher part
* from 'ptime' needs to be incremented by 1 in order reflect the correct
* presentation time.
*/
if (ptime < ref)
ptime += (1ULL << 32);
GST_LOG_OBJECT (avtpbasedepayload, "AVTP presentation time %" GST_TIME_FORMAT,
GST_TIME_ARGS (ptime));
return ptime;
}
gboolean
gst_avtp_base_depayload_push_segment_event (GstAvtpBaseDepayload *
avtpbasedepayload, guint32 avtp_tstamp)
{
GstClock *clock;
GstEvent *event;
GstSegment segment;
GstClockTime now, base_time, avtp_ptime;
clock = GST_ELEMENT_CLOCK (avtpbasedepayload);
now = gst_clock_get_time (clock);
avtp_ptime =
gst_avtp_base_depayload_tstamp_to_ptime (avtpbasedepayload, avtp_tstamp,
now);
base_time = gst_element_get_base_time (GST_ELEMENT (avtpbasedepayload));
gst_segment_init (&segment, GST_FORMAT_TIME);
segment.base = avtp_ptime - base_time;
segment.start = avtp_ptime;
segment.stop = -1;
event = gst_event_new_segment (&segment);
if (!event) {
GST_ERROR_OBJECT (avtpbasedepayload, "Failed to create SEGMENT event");
return FALSE;
}
if (!gst_pad_push_event (avtpbasedepayload->srcpad, event)) {
GST_ERROR_OBJECT (avtpbasedepayload, "Failed to push SEGMENT event");
return FALSE;
}
GST_DEBUG_OBJECT (avtpbasedepayload, "SEGMENT event pushed: %"
GST_SEGMENT_FORMAT, &segment);
avtpbasedepayload->prev_ptime = avtp_ptime;
return TRUE;
}

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/*
* GStreamer AVTP Plugin
* Copyright (C) 2019 Intel Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later
* version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#ifndef __GST_AVTP_BASE_DEPAYLOAD_H__
#define __GST_AVTP_BASE_DEPAYLOAD_H__
#include <gst/gst.h>
G_BEGIN_DECLS
#define GST_TYPE_AVTP_BASE_DEPAYLOAD (gst_avtp_base_depayload_get_type())
#define GST_AVTP_BASE_DEPAYLOAD(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AVTP_BASE_DEPAYLOAD,GstAvtpBaseDepayload))
#define GST_AVTP_BASE_DEPAYLOAD_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AVTP_BASE_DEPAYLOAD,GstAvtpBaseDepayloadClass))
#define GST_IS_AVTP_BASE_DEPAYLOAD(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AVTP_BASE_DEPAYLOAD))
#define GST_IS_AVTP_BASE_DEPAYLOAD_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AVTP_BASE_DEPAYLOAD))
typedef struct _GstAvtpBaseDepayload GstAvtpBaseDepayload;
typedef struct _GstAvtpBaseDepayloadClass GstAvtpBaseDepayloadClass;
struct _GstAvtpBaseDepayload
{
GstElement element;
GstPad *sinkpad;
GstPad *srcpad;
guint64 streamid;
GstClockTime prev_ptime;
guint8 seqnum;
gpointer _gst_reserved[GST_PADDING];
};
struct _GstAvtpBaseDepayloadClass
{
GstElementClass parent_class;
/* Pure virtual function. */
GstPadChainFunction chain;
GstPadEventFunction sink_event;
gpointer _gst_reserved[GST_PADDING];
};
GType gst_avtp_base_depayload_get_type (void);
GstClockTime gst_avtp_base_depayload_tstamp_to_ptime (GstAvtpBaseDepayload *
avtpbasedepayload, guint32 tstamp, GstClockTime ref);
gboolean gst_avtp_base_depayload_push_segment_event (GstAvtpBaseDepayload *
avtpbasedepayload, guint32 avtp_tstamp);
G_END_DECLS
#endif /* __GST_AVTP_BASE_DEPAYLOAD_H__ */

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/*
* GStreamer AVTP Plugin
* Copyright (C) 2019 Intel Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later
* version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#include "gstavtpbasepayload.h"
GST_DEBUG_CATEGORY_STATIC (avtpbasepayload_debug);
#define GST_CAT_DEFAULT (avtpbasepayload_debug)
#define DEFAULT_STREAMID 0xAABBCCDDEEFF0000
#define DEFAULT_MTT 50000000
#define DEFAULT_TU 1000000
#define DEFAULT_PROCESSING_DEADLINE (20 * GST_MSECOND)
enum
{
PROP_0,
PROP_STREAMID,
PROP_MTT,
PROP_TU,
PROP_PROCESSING_DEADLINE,
};
static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("application/x-avtp")
);
static void gst_avtp_base_payload_class_init (GstAvtpBasePayloadClass * klass);
static void gst_avtp_base_payload_init (GstAvtpBasePayload * avtpbasepayload,
gpointer g_class);
static void gst_avtp_base_payload_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_avtp_base_payload_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static gboolean gst_avtp_base_payload_sink_event (GstPad * pad,
GstObject * parent, GstEvent * event);
GType
gst_avtp_base_payload_get_type (void)
{
static GType avtpbasepayload_type = 0;
if (g_once_init_enter ((gsize *) & avtpbasepayload_type)) {
static const GTypeInfo avtpbasepayload_info = {
sizeof (GstAvtpBasePayloadClass),
NULL,
NULL,
(GClassInitFunc) gst_avtp_base_payload_class_init,
NULL,
NULL,
sizeof (GstAvtpBasePayload),
0,
(GInstanceInitFunc) gst_avtp_base_payload_init,
};
GType _type;
_type = g_type_register_static (GST_TYPE_ELEMENT, "GstAvtpBasePayload",
&avtpbasepayload_info, G_TYPE_FLAG_ABSTRACT);
g_once_init_leave ((gsize *) & avtpbasepayload_type, _type);
}
return avtpbasepayload_type;
}
static void
gst_avtp_base_payload_class_init (GstAvtpBasePayloadClass * klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->set_property = gst_avtp_base_payload_set_property;
object_class->get_property = gst_avtp_base_payload_get_property;
g_object_class_install_property (object_class, PROP_STREAMID,
g_param_spec_uint64 ("streamid", "Stream ID",
"Stream ID associated with the AVTPDU", 0, G_MAXUINT64,
DEFAULT_STREAMID, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_READY));
g_object_class_install_property (object_class, PROP_MTT,
g_param_spec_uint ("mtt", "Maximum Transit Time",
"Maximum Transit Time (MTT) in nanoseconds", 0,
G_MAXUINT, DEFAULT_MTT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_TU,
g_param_spec_uint ("tu", "Timing Uncertainty",
"Timing Uncertainty (TU) in nanoseconds", 0,
G_MAXUINT, DEFAULT_TU, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_PROCESSING_DEADLINE,
g_param_spec_uint64 ("processing-deadline", "Processing deadline",
"Maximum amount of time (in ns) the pipeline can take for processing the buffer",
0, G_MAXUINT64, DEFAULT_PROCESSING_DEADLINE, G_PARAM_READWRITE |
G_PARAM_STATIC_STRINGS));
klass->chain = NULL;
klass->sink_event = GST_DEBUG_FUNCPTR (gst_avtp_base_payload_sink_event);
GST_DEBUG_CATEGORY_INIT (avtpbasepayload_debug, "avtpbasepayload", 0,
"Base class for AVTP payloaders");
gst_type_mark_as_plugin_api (GST_TYPE_AVTP_BASE_PAYLOAD, 0);
}
static void
gst_avtp_base_payload_init (GstAvtpBasePayload * avtpbasepayload,
gpointer g_class)
{
GstPadTemplate *templ;
GstElement *element = GST_ELEMENT (avtpbasepayload);
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
GstAvtpBasePayloadClass *avtpbasepayload_class =
GST_AVTP_BASE_PAYLOAD_CLASS (g_class);
g_assert (avtpbasepayload_class->chain != NULL);
avtpbasepayload->srcpad = gst_pad_new_from_static_template (&src_template,
"src");
gst_element_add_pad (element, avtpbasepayload->srcpad);
templ = gst_element_class_get_pad_template (element_class, "sink");
g_assert (templ != NULL);
avtpbasepayload->sinkpad = gst_pad_new_from_template (templ, "sink");
gst_pad_set_chain_function (avtpbasepayload->sinkpad,
avtpbasepayload_class->chain);
gst_pad_set_event_function (avtpbasepayload->sinkpad,
avtpbasepayload_class->sink_event);
gst_element_add_pad (element, avtpbasepayload->sinkpad);
avtpbasepayload->streamid = DEFAULT_STREAMID;
avtpbasepayload->mtt = DEFAULT_MTT;
avtpbasepayload->tu = DEFAULT_TU;
avtpbasepayload->processing_deadline = DEFAULT_PROCESSING_DEADLINE;
avtpbasepayload->latency = GST_CLOCK_TIME_NONE;
avtpbasepayload->seqnum = 0;
gst_segment_init (&avtpbasepayload->segment, GST_FORMAT_UNDEFINED);
}
static void
gst_avtp_base_payload_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstAvtpBasePayload *avtpbasepayload = GST_AVTP_BASE_PAYLOAD (object);
GST_DEBUG_OBJECT (avtpbasepayload, "prop_id %u", prop_id);
switch (prop_id) {
case PROP_STREAMID:
avtpbasepayload->streamid = g_value_get_uint64 (value);
break;
case PROP_MTT:
avtpbasepayload->mtt = g_value_get_uint (value);
break;
case PROP_TU:
avtpbasepayload->tu = g_value_get_uint (value);
break;
case PROP_PROCESSING_DEADLINE:
avtpbasepayload->processing_deadline = g_value_get_uint64 (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_avtp_base_payload_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstAvtpBasePayload *avtpbasepayload = GST_AVTP_BASE_PAYLOAD (object);
GST_DEBUG_OBJECT (avtpbasepayload, "prop_id %u", prop_id);
switch (prop_id) {
case PROP_STREAMID:
g_value_set_uint64 (value, avtpbasepayload->streamid);
break;
case PROP_MTT:
g_value_set_uint (value, avtpbasepayload->mtt);
break;
case PROP_TU:
g_value_set_uint (value, avtpbasepayload->tu);
break;
case PROP_PROCESSING_DEADLINE:
g_value_set_uint64 (value, avtpbasepayload->processing_deadline);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
gst_avtp_base_payload_sink_event (GstPad * pad, GstObject * parent,
GstEvent * event)
{
GstAvtpBasePayload *avtpbasepayload = GST_AVTP_BASE_PAYLOAD (parent);
GST_DEBUG_OBJECT (avtpbasepayload, "event %s", GST_EVENT_TYPE_NAME (event));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEGMENT:
gst_event_copy_segment (event, &avtpbasepayload->segment);
/* Fall through */
default:
return gst_pad_event_default (pad, parent, event);
}
}
GstClockTime
gst_avtp_base_payload_calc_ptime (GstAvtpBasePayload * avtpbasepayload,
GstBuffer * buffer)
{
GstClockTime base_time, running_time;
g_assert (GST_BUFFER_PTS (buffer) != GST_CLOCK_TIME_NONE);
if (G_UNLIKELY (avtpbasepayload->latency == GST_CLOCK_TIME_NONE)) {
GstQuery *query;
query = gst_query_new_latency ();
if (!gst_pad_peer_query (avtpbasepayload->sinkpad, query))
return GST_CLOCK_TIME_NONE;
gst_query_parse_latency (query, NULL, &avtpbasepayload->latency, NULL);
gst_query_unref (query);
GST_DEBUG_OBJECT (avtpbasepayload, "latency %" GST_TIME_FORMAT,
GST_TIME_ARGS (avtpbasepayload->latency));
}
base_time = gst_element_get_base_time (GST_ELEMENT (avtpbasepayload));
running_time = gst_segment_to_running_time (&avtpbasepayload->segment,
avtpbasepayload->segment.format, GST_BUFFER_PTS (buffer));
return base_time + running_time + avtpbasepayload->latency +
avtpbasepayload->processing_deadline + avtpbasepayload->mtt +
avtpbasepayload->tu;
}

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