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reviewed the legal information
This commit is contained in:
Olivier Crête
parent
06563a56ef
commit
39eedcc9d7
3 changed files with 76 additions and 77 deletions
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TODO.md
3
TODO.md
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@ -22,8 +22,6 @@ Pages to review:
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- sdk-windows-deployment.md
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- sdk-mac-osx-deployment.md
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- sdk-multiplatform-deployment-using-cerbero.md
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- sdk-legal-information.md
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- sdk-api-reference.md
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Screenshots:
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@ -59,7 +57,6 @@ Reviewed pages:
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- sdk-tutorials.md
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- sdk-android-tutorial-link-against-gstreamer.md
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- sdk-android-tutorial-a-running-pipeline.md
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- sdk-api-reference.md
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- sdk-playback-tutorials.md
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- sdk-playback-tutorial-playbin-usage.md
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- sdk-playback-tutorial-subtitle-management.md
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@ -66,7 +66,7 @@ GStreamer plug-ins could be classified into
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- sinks: for audio and video (involves protocol plugins)
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GStreamer is packaged into
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@ -7,100 +7,100 @@ short-description: Patents, Licenses and legal F.A.Q.
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# Installer, default installation
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The installer (Microsoft Windows and MacOSX) and the default
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installation (GNU/Linux) contain and install the minimal default
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installation. At install time or later, the downloading of optional
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components is also possible, but read on for certain legal cautions you
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might want to take. All downloads are from the
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[freedesktop.org](http://freedesktop.org) website.
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installation (GNU/Linux) contain and install the minimal default
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installation. At install time or later, the downloading of optional
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components is also possible, but read on for certain legal cautions you
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might want to take. All downloads are from the
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[gstreamer.freedesktop.org](http://gstreamer.freedesktop.org) website.
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# Licensing of SDK
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Gstreamer SDK minimal default installation only contains packages which
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are licensed under the [GNU LGPL license
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GStreamer SDK minimal default installation only contains packages which
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are licensed under the [GNU LGPL license
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v2.1](http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html). This
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license gives you the Freedom to use, modify, make copies of the
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software either in the original or in a modified form, provided that the
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software you redistribute is licensed under the same licensing terms.
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This only extends to the software itself and modified versions of it,
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but you are free to link the LGPL software as a library used by other
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software under whichever license. In other words, it is a weak copyleft
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license gives you the Freedom to use, modify, make copies of the
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software either in the original or in a modified form, provided that the
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software you redistribute is licensed under the same licensing terms.
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This only extends to the software itself and modified versions of it,
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but you are free to link the LGPL software as a library used by other
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software under whichever license. In other words, it is a weak copyleft
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license.
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Therefore, it is possible to use the SDK to build applications that are
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then distributed under a different license, including a proprietary one,
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provided that reverse engineering is not prohibited for debugging
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modifications purposes. Only the pieces of the SDK that are under the
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LGPL need to be kept under the LGPL, and the corresponding source code
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must be distributed along with the application (or an irrevocable offer
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to do so for at least three years from distribution). Please consult
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then distributed under a different license, including a proprietary one,
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provided that reverse engineering is not prohibited for debugging
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modifications purposes. Only the pieces of the SDK that are under the
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LGPL need to be kept under the LGPL, and the corresponding source code
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must be distributed along with the application (or an irrevocable offer
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to do so for at least three years from distribution). Please consult
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section 6 of the
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[LGPL](http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html) for
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further details as to what the corresponding source code must contain.
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further details as to what the corresponding source code must contain.
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Some portions of the minimal default installation may be under
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different licenses, which are both more liberal than the LGPL (they are
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less strict conditions for granting the license) and compatible with the
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LGPL. This is advised locally.
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different licenses, which are both more liberal than the LGPL (they are
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less strict conditions for granting the license) and compatible with the
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LGPL. This is advised locally.
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# Optional packages
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There are two types of optional packages (GPL and Patented), which are
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under a different license or have other issues concerning patentability
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under a different license or have other issues concerning patentability
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(or both).
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### GPL code
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Part of the optional packages are under the GNU GPL
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[v2](http://www.gnu.org/licenses/old-licenses/gpl-2.0.html) or
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[v3](http://www.gnu.org/licenses/gpl-3.0.html). This means that you
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[v3](http://www.gnu.org/licenses/gpl-3.0.html). This means that you
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cannot link the GPL software in a program unless the same program is
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also under the GPL, but you are invited to seek competent advice on how
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this works in your precise case and design choices. GPL is called
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“strong copyleft” because the condition to distributed under the same
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license has the largest possible scope and extends to all derivative
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also under the GPL, but you are invited to seek competent advice on how
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this works in your precise case and design choices. GPL is called
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“strong copyleft” because the condition to distributed under the same
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license has the largest possible scope and extends to all derivative
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works.
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### Patents
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Certain software, and in particular software that implements
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multimedia standard formats such as Mp3, MPEG 2 video and audio, h.264,
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MPEG 4 audio and video, AC3, etc, can have patent issues. In certain
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countries patents are granted on software and even software-only
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solution are by and large considered patentable and are patented (such
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as in the United States). In certain others, patents on pure software
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solutions are formally prohibited, but granted (this is the case of
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Europe), and in others again are neither allowed nor granted.
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multimedia standard formats such as MP3, MPEG 2 video and audio, h.264,
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MPEG 4 audio and video, AC3, etc, can have patent issues. In certain
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countries patents are granted on software and even software-only
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solution are by and large considered patentable and are patented (such
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as in the United States). In certain others, patents on pure software
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solutions are formally prohibited, but granted (this is the case in many
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European countries), and in others again are neither allowed nor granted.
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It is up to you to make sure that in the countries where the SDK is
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used, products are made using it and product are distributed, a license
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from the applicable patent holders is required or not. Receiving the SDK
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– or links to other downloadable software – does not provide any license
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expressed or implied over these patents, except in very limited
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conditions where the license so provides. No representation is made.
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used, products are made using it and product are distributed, a license
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from the applicable patent holders is required or not. Receiving the SDK
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– or links to other downloadable software – does not provide any license
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expressed or implied over these patents, except in very limited
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conditions where the license so provides. No representation is made.
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In certain cases, the optional packages are distributed only as source
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code. It is up to the receiver to make sure that in the applicable
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circumstances compiling the same code for a given platform or
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distributing the object code is not an act that infringes one or more
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code. It is up to the receiver to make sure that in the applicable
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circumstances compiling the same code for a given platform or
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distributing the object code is not an act that infringes one or more
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patents.
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# Software is as-is
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All software and the entire SDK is provided as-is, without any
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warranty whatsoever. The individual licenses have particular language
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disclaiming liability: we invite you to read all of them. Should you
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need a warranty on the fact that software works as intended or have any
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kind of indemnification, you have the option to subscribe a software
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maintenance agreement with a company or entity that is in that business.
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Fluendo and Collabora, as well as some other companies, provide software
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maintenance agreements under certain conditions, you are invited to
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contact them in order to receive further details and discuss of the
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All software and the entire GStreamer SDK is provided as-is, without any
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warranty whatsoever. The individual licenses have particular language
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disclaiming liability: we invite you to read all of them. Should you
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need a warranty on the fact that software works as intended or have any
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kind of indemnification, you have the option to subscribe a software
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maintenance agreement with a company or entity that is in that business.
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Fluendo and Collabora, as well as some other companies, provide software
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maintenance agreements under certain conditions, you are invited to
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contact them in order to receive further details and discuss of the
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commercial terms.
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# Data protection
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This website might use cookies and HTTP logs for statistical analysis
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and on an aggregate basis only.
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and on an aggregate basis only.
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# Frequently Asked Questions
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@ -131,29 +131,31 @@ distributing works that utilize the SDK.
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#### Can I / must I distribute the SDK along with my application?
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You surely can. All software is Free/Open Source software, and can be
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distributed freely. You are not **required** to distribute it. Only, be
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reminded that one of the conditions for you to use software under
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distributed freely. You are not **required** to distribute it. Only,
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be reminded that one of the conditions for you to use software under
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certain licenses to make a work containing such software, is that you
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also distribute the complete source code of the original code (or of the
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modified code, if you have modified it). There are alternative ways to
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comply with this obligation, some of them do not require any actual
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distribution of source code, but since the SDK contains the entire
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source code, you might want to include it (or the directories containing
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the source code) with your application as a safe way to comply with this
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requirement of the license.
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also distribute the complete source code of the original code (or of
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the modified code, if you have modified it). There are alternative
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ways to comply with this obligation, some of them do not require any
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actual distribution of source code, but since the SDK contains the
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entire source code, you might want to include it (or the directories
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containing the source code) with your application as a safe way to
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comply with this requirement of the license.
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#### What happens when I modify the GStreamer SDK's source code?
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You are invited to do so, as the licenses (unless you are dealing with
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proprietary bits, but in that case you will not find the corresponding
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source code) so permit. Be reminded though that in that case you need to
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also provide the complete corresponding source code (and to preserve the
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same license, of course). You might also consider to push your
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modifications upstream, so that they are merged into the main branch of
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development if they are worth it and will be maintained by the GStreamer
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project and not by you individually. We invite you not to fork the code,
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if at all
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possible.
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source code) so permit. Be reminded though that in that case you need
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to also provide the complete corresponding source code (and to
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preserve the same license, of course). You might also consider to push
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your modifications upstream, so that they are merged into the main
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branch of development if they are worth it and will be maintained by
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the GStreamer project and not by you individually. We invite you not
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to fork the code, if at all possible. he Cerbero build system has a
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"bundle-source" command that can help you create a source bundle
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containing all of the complete corresponding machine readable source
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code that you are required to provide.
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#### How does licensing relate to software patents? What about software patents in general?
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@ -196,9 +198,9 @@ A widespread line of thinking says that dynamic linking is conversely
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not relevant to the copyleft effect, since the mingling of code in a
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larger work is done at runtime. However, another equally authoritative
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line of thought says that only certain type of dynamic linking is not
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copyright relevant. Therefore, using a library that is specifically
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copyright relevant. Therefore, using a library that is specifically
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designed to be loaded into a particular kind of software, even through
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API, requires permission by the copyright holder of the library when
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API, requires permission by the copyright holder of the library when
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the two pieces are distributed together.
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In all cases, since most of the software we include in the SDK is under
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