Andreas Rheinhardt 0facdafd1e avcodec/vlc: Merge VLCElem and RL_VLC_ELEM ...

It will simplify creating RL-VLCs (which until now used
a stack-based VLC as temporary buffer).

Notice that there would be another option to merge them, namely:
struct VLCElem {
    union {
        VLCBaseType sym;
        int16_t level;
    };
    int8_t len;
    uint8_t run;
};

The main difference to the current patch is that this would change
the type of the length field of VLCElem to int8_t from int16_t.
It turns out that that this would entail additional sign extensions
on ppc, see https://godbolt.org/z/behWYEYE7. I have therefore refrained
from doing so, although it would make the patch simpler.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

2025-03-17 03:26:07 +01:00

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