[FFmpeg-devel] [PATCH 1/2] ac3enc: decrement by 16 instead of 64 in first stage of the CBR bit allocation search.

Måns Rullgård mans
Sun Mar 6 21:41:51 CET 2011


Justin Ruggles <justin.ruggles at gmail.com> writes:

> This speeds up the average search time.
> ---
>  libavcodec/ac3enc.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
>
>
> diff --git a/libavcodec/ac3enc.c b/libavcodec/ac3enc.c
> index 676bb5e..beade19 100644
> --- a/libavcodec/ac3enc.c
> +++ b/libavcodec/ac3enc.c
> @@ -957,7 +957,7 @@ static int cbr_bit_allocation(AC3EncodeContext *s)
>  
>      while (snr_offset >= 0 &&
>             bit_alloc(s, snr_offset) > bits_left) {
> -        snr_offset -= 64;
> +        snr_offset -= 16;
>      }
>      if (snr_offset < 0)
>          return AVERROR(EINVAL);

If you say so... OK.

-- 
M?ns Rullg?rd
mans at mansr.com



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