[FFmpeg-devel] [PATCH 1/2] lavc/flacdsp: document limitations of the LPC encoder

Christophe Gisquet christophe.gisquet at gmail.com
Thu Aug 14 18:01:22 CEST 2014


2014-08-14 17:14 GMT+02:00 James Darnley <james.darnley at gmail.com>:
> +     * This limit is used:
> +     * - when CONFIG_SMALL is 0 to unroll a loop in the C template.
> +     * - when SSE4 (or newer) is available on x86 to unroll a copy loop.

Does the implementer of a new dsp version really has a need for this
info? Knowing that order can be anything from 1 to 32 is sufficient.
I'd move this part to the commit message.

On the other hand, he probably needs to know that the coefficients
after the last one are 0s (ie he doesn't need to do it himself on his
simd vectors).


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