[FFmpeg-soc] [PATCH 4/5] simplify precision normalization calculation

Ronald S. Bultje rsbultje at gmail.com
Wed Nov 17 04:03:45 CET 2010


Hi,

On Wed, Nov 17, 2010 at 2:37 AM, Justin Ruggles
<justin.ruggles at gmail.com> wrote:
> -            v = 14 - log2_tab(input_samples, AC3_BLOCK_SIZE*2);
> -            if (v < 0)
> -                v = 0;
> +            v = FFMAX(0, 14 - log2_tab(input_samples, AC3_BLOCK_SIZE*2));
[..]
$ grep FFMAX libavutil/*.h
libavutil/common.h:#define FFMAX(a,b) ((a) > (b) ? (a) : (b))

This will calculate 14 - log2_bla bla twice, no?

Ronald


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