2012-10-11 00:04:08 +00:00
|
|
|
mpv is a fork of mplayer2, which is a fork of MPlayer.
|
|
|
|
|
2017-10-13 13:37:55 +00:00
|
|
|
mpv as a whole is licensed under the GNU General Public License GPL version 2
|
|
|
|
or later (called GPLv2+ in this document, see LICENSE.GPL for full license
|
|
|
|
text) by default, or the GNU Lesser General Public License LGPL version 2 or
|
|
|
|
later (LGPLv2.1+ in this document, see LICENSE.LGPL for full license text) if
|
|
|
|
built with the --enable-lgpl configure switch.
|
|
|
|
|
|
|
|
Most source files are LGPLv2.1+ or GPLv2+, but some files are available under
|
|
|
|
more liberal licenses, such as BSD, MIT, ISC, and possibly others. Look at the
|
|
|
|
copyright header of each source file, and grep the sources for "Copyright" if
|
|
|
|
you need to know details. C source files without Copyright notice are usually
|
|
|
|
licensed as LGPLv2.1+. Also see the list of files with specific licenses below
|
|
|
|
(not all files can have a standard license header).
|
2015-07-24 21:53:31 +00:00
|
|
|
|
2017-10-10 14:21:01 +00:00
|
|
|
All new contributions must be LGPLv2.1+ licensed. Using a more liberal license
|
|
|
|
compatible to LGPLv2.1+ is also ok.
|
|
|
|
|
|
|
|
If changes are done on GPL code, must come with the implicit agreement that the
|
2017-10-13 13:37:55 +00:00
|
|
|
project can relicense the changes to LGPLv2.1+ at a later point without asking
|
|
|
|
the contributor. This is a safeguard for making potential relicensing of
|
|
|
|
remaining GPL code to LGPLv2.1+ easier.
|
2003-12-09 08:35:55 +00:00
|
|
|
|
2013-10-12 23:18:50 +00:00
|
|
|
For information about authors and contributors, consult the git log, which
|
|
|
|
contains the complete SVN and CVS history as well.
|
2010-01-04 13:01:44 +00:00
|
|
|
|
2015-07-24 21:53:31 +00:00
|
|
|
"v2.1+" in this context means "version 2.1 or later".
|
2017-02-16 10:43:02 +00:00
|
|
|
|
2017-05-11 06:12:14 +00:00
|
|
|
Some libraries are GPLv2+ or GPLv3+ only. Building mpv with Samba support makes
|
|
|
|
it GPLv3+.
|
|
|
|
|
2017-10-10 14:21:01 +00:00
|
|
|
mpv can be built as LGPLv2.1+ with the --enable-lgpl configure option. To add
|
|
|
|
a LGPL mode to mpv, MPlayer code had to be relicensed from GPLv2+ to LGPLv2.1+
|
|
|
|
by asking the MPlayer authors for permission. Since permission could not be
|
|
|
|
obtained from everyone, LGPL mode disables the following features, some of
|
|
|
|
them quite central:
|
2017-09-21 11:50:18 +00:00
|
|
|
- no audio filtering, which breaks: --volume, --af, replaygain, pitch
|
|
|
|
correction, fine control about downmix/upmix/resampling behavior
|
|
|
|
- Linux X11 video output
|
|
|
|
- BSD audio output via OSS
|
vaapi: change license to LGPL
Originally mpv vaapi support was based on the MPlayer-vaapi patches.
These were never merged in upstream MPlayer. The license headers
indicated they were GPL-only. Although the actual author agreed to
relicensing, the company employing him to write this code did not, so
the original code is unusable to us.
Fortunately, vaapi support was refactored and rewritten several times,
meaning little code is actually left. The previous commits removed or
moved that to GPL-only code. Namely, vo_vaapi.c remains GPL-only. The
other code went away or became unnecessary mainly because libavcodec
itself gained the ability to manage the hw decoder, and libavutil
provides code to manage vaapi surfaces. We also changed to mainly using
EGL interop, making any of the old rendering code unnecessary.
hwdec_vaglx.c is still GPL. It's possibly relicensable, because much of
it was changed, but I'm not too sure and further investigation would be
required. Also, this has been disabled by default for a while now, so
bothering with this is a waste of time. This commit simply disables it
at compile time as well in LGPL mode.
2017-09-29 16:44:47 +00:00
|
|
|
- NVIDIA/Linux hardware decoding (vdpau, although CUDA usually works)
|
2017-09-21 11:50:18 +00:00
|
|
|
- many builtin video filters (use libavfilter instead)
|
|
|
|
- automatic rotation and stereoscopic video handling
|
|
|
|
- Linux TV input
|
|
|
|
- minor features: jack, DVD, CDDA, SMB, CACA, legacy direct3d VO
|
player: change 3 remaining GPL-only code pieces to LGPL
There has been no new developments or agreements, but I was uncertain
about the copyright status of them. Thus this part of code was marked as
being potentially GPL, and was not built in LGPL mode. Now I've taken a
close look again, and decided that these can be relicensed using the
existing relicensing agreements.
OSD level 3 was introduced in commit 8d190244, with the author being
unreachable. As I decided in commit 6ddd95fd, OSD level 3 itself can
be kept, but the "osd" command had to go, and the "rendering" of OSD
level 3 (the HAVE_GPL code in osd.c) was uncertain. But the code for
this was rewritten: instead of duplicating the time/percent formatting
code, it was changed to use common code, and some weird extra logic was
removed. The code inside of the "if" is exactly the same as the code
that formats the OSD status line (covered by LGPL relicensing).
The current commands for adding/removing sub/audio tracks more or less
originated from commit 2f376d1b39, with the author being unreachable.
But the original code was very different, mostly due to MPlayer's
incredibly messy handling of subtitles in general. Nothing of this
remains in the current code. Even the command declarations were
rewritten. The commands (as seen from the user side) are rather similar
in naming and semantics, but we don't consider this copyrightable. So it
doesn't look like anything copyrightable is left.
The add/cycle commands were more or less based on step_property,
introduced in commit 7a71da01d6, with the patch author disagreeing with
the LGPL relicensing. But all code original to the patch has been
replaced in later mpv changes, and the original code was mostly copied
from MP_CMD_SET_PROPERTY anyway. The underlying property interface was
completely changed, the error handling was redone, and all of this is
very similar to the changes that were done on SET_PROPERTY. The command
declarations are completely different in the first place, because the
semantic change from step to add/cycle. The commit also seems to have
been co-authored by reimar to some degree. He also had the idea to
change the original patch from making the command modify a specific
property to making it generic.
(The error message line, especially with its %g formatting, might
contain some level of originality, so change that just to be sure.
This commit Copies and adapts the error message for SET_PROPERTY.)
Although I'm a bit on the fence with all the above things, it really
doesn't look like there's anything substantial that would cause issues.
I thus claim that there is no problem with changing the license to LGPL
for the above things. It's probably still slightly below the standard
that was usually applied in the code relicensing in mpv, but probably
still far above to the usual in open source relicensing (and above
commercial standards as well, if you look what certain tech giants do).
2017-11-24 13:04:53 +00:00
|
|
|
Some of these will be fixed in the future. The intended use for LGPL mode is
|
2017-11-29 16:29:41 +00:00
|
|
|
with libmpv, and currently it's not recommended to build mpv CLI in LGPL mode
|
2017-09-21 11:50:18 +00:00
|
|
|
at all.
|
|
|
|
|
2017-10-10 14:21:01 +00:00
|
|
|
The following files are still GPL only (--enable-lgpl disables them):
|
2017-05-05 06:38:30 +00:00
|
|
|
|
2017-09-21 11:50:18 +00:00
|
|
|
audio/filter/* will be replaced with new filter chain
|
|
|
|
audio/filter/af_format.c mostly LGPL (except af glue code)
|
|
|
|
audio/filter/af_lavc3enc.c as above
|
|
|
|
audio/filter/af_lavfi.c as above
|
|
|
|
audio/filter/af_scaletempo.c as above
|
|
|
|
audio/filter/af_rubberband.c as above
|
audio/out: change license of some core files to LGPL
All contributors of the current code have agreed. ao.c requires a
"driver" entry for each audio output - we assume that if someone who
didn't agree to LGPL added a line, it's fine for ao.c to be LGPL
anyway. If the affected audio output is not disabled at compilation
time, the resulting binary will be GPL anyway, and ootherwise the
code is not included.
The audio output code itself was inspired or partially copied from
libao in 7a2eec4b59f4 (thus why MPlayer's audio code is named libao2).
Just to be sure we got permission from Aaron Holtzman, Jack Moffitt, and
Stan Seibert, who according to libao's SVN history and README are the
initial author. (Something similar was done for libvo, although the
commit relicensing it forgot to mention it.)
242aa6ebd40: anders mostly disagreed with the LGPL relicensing, but we
got permission for this particular commit.
0ef8e555735: nick could not be reached, but the include statement was
removed again anyway.
879e05a7c17: iive agreed to LGPL v3+ only, but this line of code was
removed anyway, so ao_null.c can be LGPL v2.1+.
9dd8f241ac2: patch author could not be reached, but the corresponding
code (old slave mode interface) was completely removed later.
2017-05-20 09:35:25 +00:00
|
|
|
audio/out/ao_jack.c will stay GPL
|
2017-05-05 06:38:30 +00:00
|
|
|
audio/out/ao_oss.c will stay GPL
|
2017-09-21 11:50:18 +00:00
|
|
|
audio/audio.* needed by af code only
|
2017-05-05 06:38:30 +00:00
|
|
|
demux/demux_tv.c will stay GPL
|
|
|
|
stream/ai_* will stay GPL (TV code)
|
|
|
|
stream/audio_in.* will stay GPL (TV code)
|
|
|
|
stream/dvb* must stay GPL
|
|
|
|
stream/frequencies.* must stay GPL
|
|
|
|
stream/stream_cdda.c unknown
|
|
|
|
stream/stream_dvb.* must stay GPL
|
|
|
|
stream/stream_dvd.c unknown
|
|
|
|
stream/stream_dvd_common.* unknown
|
|
|
|
stream/stream_dvdnav.c unknown
|
2017-05-11 06:12:14 +00:00
|
|
|
stream/stream_smb.c will stay GPLv3
|
2017-05-05 06:38:30 +00:00
|
|
|
stream/stream_tv.c will stay GPL
|
|
|
|
stream/tv* will stay GPL
|
af_format: change license to LGPL
This case is a bit weird, because MPlayer certainly also has a file
named af_format.c. Both appear to have the function of converting audio
data between sample formats.
However, mpv's af_format.c is a rewrite, and doesn't actually do
conversion by itself. It's similar to vf_format.c, and forces the
generic filter chain code to insert conversion filters, instead of doing
conversion explicitly.
mpv's current af_format.c started out as af_force.c in d9582ad0a41. It
was renamed to af_format.c in e60b8f181d, while the old af_format.c was
split into two new filters. In 943c785619 the filename was changed to
af_format.c as well.
The new af_format.c does not contain any libaf code, except for some
potentially copy & pasted skeleton and boilerplate code. (We don't
account for this in per-filter file licenses, as the old libaf code
has to be removed fully, at which point the filters will have to be
ported to another framework, which will removed that boilerplate code.)
The old filters based on af_format.c were progressively replaced and
removed. Support for non-native endian and formats with signedness
different from native FFmpeg was completely removed in 831d7c3c400b.
The old 24 bit conversion code was removed in 552dc0d564 (made
unnecessary by 5a9f817bfde8).
Also list hwdec_vaglx.c as GPL-only, which doesn't have anything to do
with this commit.
2017-05-11 09:00:15 +00:00
|
|
|
video/out/opengl/hwdec_vaglx.c GPL
|
2017-05-05 06:38:30 +00:00
|
|
|
video/out/vo_caca.c unknown
|
|
|
|
video/out/vo_direct3d.c unknown
|
|
|
|
video/out/vo_vaapi.c probably impossible (some company's code)
|
|
|
|
video/out/vo_vdpau.c probably impossible (nVidia's code)
|
|
|
|
video/out/vo_x11.c probably impossible
|
|
|
|
video/out/vo_xv.c probably impossible
|
|
|
|
video/out/x11_common.* probably impossible
|
|
|
|
video/vdpau.c hard (GPL-only parts must be ifdefed)
|
|
|
|
video/vdpau.h unknown
|
|
|
|
video/vdpau_mixer.* actual code must be rewritten
|
2017-10-10 14:21:01 +00:00
|
|
|
DOCS/man/ GPLv2+
|
|
|
|
bootstrap.py unknown license, probably GPLv2+ or LGPLv2+
|
|
|
|
etc/mplayer-input.conf unknown license, probably GPLv2+
|
|
|
|
mpv.desktop unknown license, probably GPLv2+
|
2017-11-29 16:29:41 +00:00
|
|
|
etc/restore-old-bindings.conf unknown license, probably GPLv2+
|
2017-09-21 11:50:18 +00:00
|
|
|
|
2017-10-10 14:21:01 +00:00
|
|
|
The following files contain some optional GPL code (--enable-lgpl disables it):
|
2017-09-21 11:50:18 +00:00
|
|
|
|
|
|
|
options/parse_commandline.c dvd:// expansion
|
|
|
|
player/audio.c libaf glue code
|
2017-10-10 14:21:01 +00:00
|
|
|
|
|
|
|
None of the exceptions listed above affect the final binary if it's built as
|
|
|
|
LGPL. Linked libraries still can affect the final license (for example if
|
|
|
|
FFmpeg was built as GPL).
|