[FFmpeg-devel] [PATCH]opencl: compile kernels separately

[Lenny Wang]

Currently opencl kernels in ffmpeg are compiled altogether at
initialization stage, most of related data structures are maintained within
the opencl framework of ffmpeg.  This is very cumbersome to use and is not
efficient.  This patch uses distributed opencl programs/kernels for each
filter (or potentially any other component that uses opencl), allowing
kernels to be compiled separately at each component's initialization stage.

Tests have been conducted successfully on mainstream Nvidia/AMD/Intel
platforms with "-vf deshake=opencl=1,unsharp=opencl=1".
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