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Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Simple fix of typo in the include-guard so that it actually does what
it is supposed to do.
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Ref #3353

Signed-off-by: Thomas Guillem <thomas@gllm.fr>

There isn't a case where program[0] is 0 and program[1] is 0. They are always
created together. So the second part of the if() is never called.

program[0] is for YUV and XYZ sources so it is odd to use it with a single
planar texture, given that's what program[1] is for.
Signed-off-by: Thomas Guillem <thomas@gllm.fr>

Signed-off-by: Thomas Guillem <thomas@gllm.fr>

Instead of expecting the longname to be passed in the config chain and
parsing it from there

This makes deletion and appending somewhat more consistent.

And simplify accordingly, notably inline playlist_NodeAppend().

...where applicable. (Some other functions conditionally delete stuff;
those functions can actually fail.)