| GStreamer 1.5.x development series |
| |
| WHAT IT IS |
| ---------- |
| |
| This is GStreamer, a framework for streaming media. |
| |
| WHERE TO START |
| -------------- |
| |
| We have a website at |
| http://gstreamer.freedesktop.org/ |
| |
| You should start by going through our FAQ at |
| http://gstreamer.freedesktop.org/data/doc/gstreamer/head/faq/html/ |
| |
| There is more documentation; go to |
| http://gstreamer.freedesktop.org/documentation |
| |
| You can subscribe to our mailing lists; see the website for details. |
| |
| We track bugs in GNOME's bugzilla; see the website for details. |
| |
| 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 |
| - Solaris is reported to work; a specific sunaudiosink plugin has been written |
| - MacOSX 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 not yet available or 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, 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 |
| http://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. |
| |
| - check output of ./configure --help to see if any options apply to you |
| - run |
| ./configure |
| make |
| |
| to build GStreamer. |
| - if you want to install it (not required, but what you usually want to do), run |
| make install |
| |
| - try out a simple test: |
| gst-launch -v fakesrc num_buffers=5 ! fakesink |
| (If you didn't install GStreamer, prefix gst-launch with tools/) |
| |
| 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 |
| ------------------ |
| |
| When building from git sources, you will need to run autogen.sh to generate |
| the build system files. |
| |
| You will need a set of additional tools typical for building from git, |
| including: |
| - autoconf |
| - automake |
| - libtool |
| |
| 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 |
| |
| Check autogen.sh options by running autogen.sh --help |
| |
| autogen.sh can pass on arguments to configure |
| |
| 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. |
| |
| After the autogen.sh stage, you can follow the directions listed in |
| "COMPILING FROM SOURCE" |
| |
| You can also run your whole git stack uninstalled in your home directory, |
| so that you can quickly test changes without affecting your system setup or |
| interfering with GStreamer installed from packages. Many GStreamer developers |
| use an uninstalled setup for their work. |
| |
| There is a 'create-uninstalled-setup.sh' script in |
| |
| http://cgit.freedesktop.org/gstreamer/gstreamer/tree/scripts/ |
| |
| to easily create an uninstalled setup from scratch. |
| |
| |
| PLUG-IN DEPENDENCIES AND LICENSES |
| --------------------------------- |
| |
| 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. |
| |
| 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 |
| source. |