Fix build of FFmpeg with libx265 X265_BUILD >= 210 and X265_BUILD < 213 (fixes/34) #970
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x265 added support for alpha starting with build 210. While doing so, x265_encoder_encode() changed its fifth arg to an array of pointers to x265_picture. This broke building lavc/libx265.c This patch simply unbreaks the build and maintains existing single-layer non-alpha encoding support. Fixes #11130 (cherry picked from commit 1f801dfdb5066aadf0ade9cb5e94d620f33eacdc)
Earlier, x265 made an API change to support alpha and other multiple layer pictures. We added guards to accommodate that in 1f801dfdb5 They have now reverted that API change in https://bitbucket.org/multicoreware/x265_git/commits/78e5b703b1 Updated our wrapper guards to unbreak build again. (cherry picked from commit 099f88b8641dfc299f3896d17d9addc5b9ae7799)
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Closes #966
I do not recommend applying this to master since the update to FFmpeg 7.1 will fix this.