First of all, `lutdata` was passed to `pl_lut_parse_cube()` even if
it was empty. This caused a bogus error message to be printed by
the LUT parsing code in libplacebo.
"[vo/gpu-next/libplacebo] Missing LUT size specification?"
One of the reasons why `lutdata` can be empty is if the LUT file size
exceeds the `max_size` limit passed to `stream_read_file()`.
So in this commit, `lutdata` is checked first before getting passed to
libplacebo, and a non-bogus error message is printed if it's empty.
And secondly, the max size allowed is raised from the quite limiting
value of 100MB to 1.5GiB. The new max matches the limit in LUT cache
which is used to support up to 512x512x512 LUTs.
Signed-off-by: Mohammad AlSaleh <CE.Mohammad.AlSaleh@gmail.com>
d027e02d37