[FFmpeg-devel] [PATCH] avcodec/pcm: Increase a/mu-law encoding table sizes

[Christophe Gisquet]

Hi,

2014-11-30 12:11 GMT+01:00 Michael Niedermayer <michaelni at gmx.at>:
> This very slightly improves quality at the expense of 96kb more memory for tables

I'm not concerned by this case, but maybe put that under CONFIG_SMALL
or something related?

Also, out of curiosity rather than concern:
> -0568b0b9a72e31559e150e7e09d301cd *tests/data/fate/acodec-pcm-alaw.out.wav
> -stddev:  101.67 PSNR: 56.19 MAXDIFF:  515 bytes:  1058400/  1058400
> +7041abdd337c41a67c7cacba106cae5a *tests/data/fate/acodec-pcm-alaw.out.wav
> +stddev:  101.64 PSNR: 56.19 MAXDIFF:  512 bytes:  1058400/  1058400
> diff --git a/tests/ref/acodec/pcm-mulaw b/tests/ref/acodec/pcm-mulaw
[...]
> -stddev:  103.38 PSNR: 56.04 MAXDIFF:  644 bytes:  1058400/  1058400
> +c6bd3d01c4e1b3478f17127590eb27cd *tests/data/fate/acodec-pcm-mulaw.out.wav
> +stddev:  103.36 PSNR: 56.04 MAXDIFF:  644 bytes:  1058400/  1058400

Did you do this because you had an example showing a stronger impact
than this? MAXDIFF isn't reduced, stddev is reduced by 0.03%.

-- 
Christophe