[FFmpeg-devel] [RFC]lavc/ffv1dec: Scale msb-packed output to full 16bit

[Michael Niedermayer]

On Wed, Nov 16, 2016 at 12:15:28PM +0100, Carl Eugen Hoyos wrote:
> Hi!
> 
> Attached patch improves output for some ffv1 files imo.
> Current slowdown for the existing decode-line timer is 
> 2%, I wonder if this can be improved through refactoring.
> 
> Please comment, Carl Eugen

>  ffv1dec.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> ab0f3ff58a18145efd66d627ecbf54c35b5c23e6  0001-lavc-ffv1dec-Scale-output-for-lsb-packed-compression.patch
> From e4e8277d4f0daeb9f61c2da9ebb167a084b1b93c Mon Sep 17 00:00:00 2001
> From: Carl Eugen Hoyos <cehoyos at ag.or.at>
> Date: Wed, 16 Nov 2016 12:03:17 +0100
> Subject: [PATCH] lavc/ffv1dec: Scale output for msb-packed compression to
>  full 16bit.
> 
> 2% slowdown for existing decode-line timer.
> ---
>  libavcodec/ffv1dec.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

probably ok

also try if using a temporary variable  is faster


[...]

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Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

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