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README: Replace current README (containing the release notes from som…
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WHAT IT IS | ||
---------- | ||
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GStreamer: Release notes for GStreamer Base Plug-ins 0.9.3 "De Facto" | ||
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This is GStreamer, a framework for streaming media. | ||
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The GStreamer team is petrified to announce a new release | ||
in the 0.9.x development series of the | ||
GStreamer Base Plug-ins. | ||
WHERE TO START | ||
-------------- | ||
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We have a website at | ||
http://gstreamer.freedesktop.org/ | ||
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The 0.9.x series is a development series and not recommended for end users. | ||
It is not API or ABI compatible with the stable 0.8.x series. | ||
It is, however, parallel installable with the 0.8.x series. | ||
You should start by going through our FAQ at | ||
http://gstreamer.freedesktop.org/data/doc/gstreamer/head/faq/html/ | ||
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There is more documentation; go to | ||
http://gstreamer.freedesktop.org/documentation | ||
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This module contains a set of reference plugins, base classes for other | ||
plugins, and helper libraries. | ||
You can subscribe to our mailing lists; see the website for details. | ||
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This module is kept up-to-date together with the core developments. Element | ||
writers should look at the elements in this module as a reference for | ||
their development. | ||
We track bugs in GNOME's bugzilla; see the website for details. | ||
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This module contains elements for, among others: | ||
You can join us on IRC - #gstreamer on irc.freenode.org | ||
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device plugins: x(v)imagesink, alsa, v4lsrc, cdparanoia | ||
containers: ogg | ||
codecs: vorbis, theora | ||
text: textoverlay, subparse | ||
sources: sinesrc, videotestsrc, gnomevfssrc | ||
network: tcp | ||
typefind | ||
audio processing: audioconvert, adder, audiorate, audioscale, volume | ||
visualisation: libvisual | ||
video processing: ffmpegcolorspace | ||
aggregate elements: decodebin, playbin | ||
GStreamer 0.10 series | ||
--------------------- | ||
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Starring | ||
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Other modules containing plug-ins are: | ||
GSTREAMER | ||
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The core around which all other modules revolve. Base functionality and | ||
libraries, some essential elements, documentation, and testing. | ||
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gst-plugins-good | ||
contains a set of well-supported plug-ins under our preferred license | ||
gst-plugins-ugly | ||
contains a set of well-supported plug-ins, but might pose problems for | ||
distributors | ||
gst-plugins-bad | ||
contains a set of less supported plug-ins that haven't passed the | ||
rigorous quality testing we expect | ||
BASE | ||
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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. | ||
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And introducing, for the first time ever, on the development screen ... | ||
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Features of this release | ||
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* Parallel installability with 0.8.x series | ||
* Threadsafe design and API | ||
* RTP base classes | ||
THE GOOD | ||
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Bugs fixed in this release | ||
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* 313251 : ximagesink unused functions | ||
* 315159 : audioconvert lost 24 bit conversions in the rewrite | ||
--- "Such ingratitude. After all the times I've saved your life." | ||
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Download | ||
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. | ||
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You can find source releases of gst-plugins-base in the download directory: | ||
http://gstreamer.freedesktop.org/src/gst-plugins-base/ | ||
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. | ||
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GStreamer Homepage | ||
THE UGLY | ||
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More details can be found on the project's website: | ||
http://gstreamer.freedesktop.org/ | ||
--- "When you have to shoot, shoot. Don't talk." | ||
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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. | ||
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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. | ||
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THE BAD | ||
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--- "That an accusation?" | ||
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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. | ||
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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. | ||
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The Lowdown | ||
----------- | ||
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--- "I've never seen so many plug-ins wasted so badly." | ||
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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: | ||
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- 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. | ||
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- 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. | ||
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- 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). | ||
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- We believe distributors can safely ship these plug-ins. | ||
- People writing elements should base their code on these elements. | ||
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- 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. | ||
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- Distributors should check if they want/can ship these plug-ins. | ||
- People writing elements should base their code on these elements. | ||
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- 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. | ||
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- 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. | ||
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PLATFORMS | ||
--------- | ||
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- Linux is of course fully supported | ||
- FreeBSD is reported to work; other BSD's should work too | ||
- Solaris is reported to work; a specific sunaudiosink plugin has been written | ||
- MacOSX is reported to work; specific audio and video sinks have been written | ||
- Windows support is experimental but improving. Output sinks have been | ||
written but are not yet included in the code. We support | ||
- MSys/MingW builds | ||
- Microsoft Visual Studio 6 builds (see win32/README.txt) | ||
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INSTALLING FROM PACKAGES | ||
------------------------ | ||
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You should always prefer installing from packages first. GStreamer is | ||
well-maintained for a number of distributions, including Fedora, Debian, | ||
Ubuntu, Mandrake, Gentoo, ... | ||
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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 CVS. | ||
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Find more information about the various packages at | ||
http://gstreamer.freedesktop.org/download/ | ||
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COMPILING FROM SOURCE TARBALLS | ||
------------------------------ | ||
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- 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. | ||
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- check output of ./configure --help to see if any options apply to you | ||
- run | ||
./configure | ||
make | ||
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to build GStreamer. | ||
- if you want to install it (not required, but what you usually want to do), run | ||
make install | ||
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- try out a simple test: | ||
gst-launch -v fakesrc num_buffers=5 ! fakesink | ||
(If you didn't install GStreamer, prefix gst-launch with tools/) | ||
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If it outputs a bunch of messages from fakesrc and fakesink, everything is | ||
ok. | ||
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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). | ||
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- 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. | ||
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COMPILING FROM CVS | ||
------------------ | ||
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When building from CVS sources, you will need to run autogen.sh to generate | ||
the build system files. | ||
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You will need a set of additional tools typical for building from CVS, | ||
including: | ||
- autoconf | ||
- automake | ||
- libtool | ||
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autogen.sh will check for recent enough versions and complain if you don't have | ||
them. You can also specify specific versions of automake and autoconf with | ||
--with-automake and --with-autoconf | ||
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Check autogen.sh options by running autogen.sh --help | ||
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autogen.sh can pass on arguments to configure - you just need to separate them | ||
from autogen.sh with -- between the two. | ||
prefix has been added to autogen.sh but will be passed on to configure because | ||
some build scripts like that. | ||
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When you have done this once, you can use autoregen.sh to re-autogen with | ||
the last passed options as a handy shortcut. Use it. | ||
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After the autogen.sh stage, you can follow the directions listed in | ||
"COMPILING FROM SOURCE" | ||
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You can also run your whole cvs stack uninstalled. The script in | ||
the gstreamer module /docs/faq/gst-uninstalled) is helpful in setting | ||
up your environment for this. | ||
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PLUG-IN DEPENDENCIES AND LICENSES | ||
--------------------------------- | ||
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GStreamer is developed under the terms of the LGPL (see LICENSE 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. | ||
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When using GPL-linked plug-ins, GStreamer is for all practical reasons | ||
under the GPL itself. | ||
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HISTORY | ||
------- | ||
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Support and Bugs | ||
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We use GNOME's bugzilla for bug reports and feature requests: | ||
http://bugzilla.gnome.org/enter_bug.cgi?product=GStreamer | ||
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Developers | ||
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CVS is hosted on cvs.freedesktop.org. | ||
All code is in CVS and can be checked out from there. | ||
Interested developers of the core library, plug-ins, and applications should | ||
subscribe to the gstreamer-devel list. If there is sufficient interest we | ||
will create more lists as necessary. | ||
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Applications | ||
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Contributors to this release | ||
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* Andy Wingo | ||
* David Schleef | ||
* Jan Schmidt | ||
* Johan Dahlin | ||
* Michael Smith | ||
* Stefan Kost | ||
* Thomas Vander Stichele | ||
* Tim-Philipp Müller | ||
* Torsten Schoenfeld | ||
* Wim Taymans | ||
* Zaheer Abbas Merali | ||
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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 | ||
source. |