vd, vd_lavc: change license to LGPL (almost)

iive agreed only to LGPL 3.0+ only. All of his relevant changes are for
XvMC, for which mpv completely dropped support back in mplayer2 times.
But you could claim that the get_format code represents some residual
copyright (everything else added by iive was removed, only get_format
still is around in some form). While I doubt that this is relly
copyright-relevant, consider it is for now.

michael is the original author of vd_lavc.c, so this file can become
LGPL only after the core becomes LGPL.

cehoyos did not agree with the LGPL relicensing, but all of his code is
gone.

Some others could not be reached, but their code is gone as well. In
particular, vdpau support, which was originally done by Nvidia, had
larger impact on vd_lavc.c, but vdpau support was first refactored a few
times (for the purpose of modularization) and moved to different files,
and then decoding was completely moved to libavcodec.

Lastly, assigning the "opaque" field was moved by Gwenole Beauchesne in
commit 8e5edec13eab. Agreement is pending (due to copyright apparently
owned by the author's employer). So just undo the change, so we don't
have to think about whether the change is copyrightable.

1 files changed, 11 insertions, 1 deletions

diff --git a/video/decode/vd_lavc.c b/video/decode/vd_lavc.c
index 581f50979b..209ad8c0c5 100644
--- a/video/decode/vd_lavc.c
+++ b/video/decode/vd_lavc.c
@@ -13,6 +13,16 @@
  *
  * You should have received a copy of the GNU General Public License along
  * with mpv.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Almost LGPLv3+.
+ *
+ * The parts potentially making this file LGPL v3 (instead of v2.1 or later) are:
+ * 376e3abf5c7d2 xvmc use get_format for IDCT/MC recognition
+ * c73f0e18bd1d6 Return PIX_FMT_NONE if the video system refuses all other formats.
+ * (iive agreed to LGPL v3+ only. Jeremy agreed to LGPL v2.1 or later.)
+ * Once these changes are not relevant to for copyright anymore (e.g. because
+ * they have been removed), and the core is LGPL, this file will change to
+ * LGPLv2.1+.
  */
 
 #include <stdio.h>
@@ -573,7 +583,6 @@ static void init_avctx(struct dec_video *vd, const char *decoder,
     AVCodecContext *avctx = ctx->avctx;
     if (!ctx->avctx)
         goto error;
-    avctx->opaque = vd;
     avctx->codec_type = AVMEDIA_TYPE_VIDEO;
     avctx->codec_id = lavc_codec->id;
 
@@ -586,6 +595,7 @@ static void init_avctx(struct dec_video *vd, const char *decoder,
         goto error;
 
     if (ctx->hwdec) {
+        avctx->opaque = vd;
         avctx->thread_count = 1;
 #if HAVE_VDPAU_HWACCEL
         avctx->hwaccel_flags |= AV_HWACCEL_FLAG_IGNORE_LEVEL;