[MPlayer-dev-eng] Chroma roll-off filter

[Stanley]

Thanks Reimar for your suggestions.
I rewrote the filter, putting optimization into consideration. ;-)

Stanley

Reimar Doeffinger wrote:
> This is horribly inefficient, you are doing two floating point
> multiplications and one division per pixel.
> You should do something like this IMO:
> unsigned delta = (level_hi - level_low)/(pos2 - pos1) * (1 << 24);
> unsigned level_low_int = level_low * (1 << 24);
> in config, then in the loop:
> unsigned level = level_low_int;
> *dest = (level * *src) >> 24;
> level += delta;
>   

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