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

[Carl Eugen Hoyos]

2016-11-16 15:02 GMT+01:00 Michael Niedermayer <michael at niedermayer.cc>:
> 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

Unfortunately not.

Patch applied, Carl Eugen