[FFmpeg-devel] patch2 Add-multithreading-for-swscale-filter.patch

[Michael Niedermayer]

On Fri, Jul 19, 2019 at 12:36:48PM +0000, Pawlowski, Slawomir wrote:
> From 3ce39207e95eb4697abb0fbaccd37cc451559e49 Mon Sep 17 00:00:00 2001
> From: Slawomir Pawlowski <slawomir.pawlowski at intel.com>
> Date: Fri, 19 Jul 2019 13:16:16 +0200
> Subject: [PATCH] Add multithreading for swscale filter.
> 
> Use with option "-filter_scale_threads <num_threads>"
> Split slice in scaler in to parts.
> 
> Signed-off-by: Slawomir Pawlowski <slawomir.pawlowski at intel.com>
> Signed-off-by: Tomasz Szumski <tomasz.szumski at intel.com>
> ---
>  fftools/ffmpeg.h              |   1 +
>  fftools/ffmpeg_filter.c       |   3 +
>  fftools/ffmpeg_opt.c          |   7 +
>  libavfilter/avfilter.h        |  18 ++
>  libavfilter/avfiltergraph.c   |   4 +
>  libavfilter/vf_scale.c        |   4 +
>  libswscale/options.c          |   3 +
>  libswscale/slice.c            |  32 +++-
>  libswscale/swscale.c          | 414 +++++++++++++++++++++++++++++-------------
>  libswscale/swscale_internal.h |  46 +++++
>  libswscale/utils.c            | 152 +++++++++++++++-
>  11 files changed, 547 insertions(+), 137 deletions(-)

didnt really review the code yet but it fails to build on mingw64

CC	libswscale/alphablend.o
In file included from src/libswscale/alphablend.c:21:0:
src/libswscale/swscale_internal.h:665:5: error: unknown type name ‘pthread_t’
     pthread_t f_thread;
     ^
src/libswscale/swscale_internal.h:666:5: error: unknown type name ‘pthread_cond_t’
     pthread_cond_t process_cond;
     ^
src/libswscale/swscale_internal.h:667:5: error: unknown type name ‘pthread_cond_t’
     pthread_cond_t finish_cond;
     ^
src/libswscale/swscale_internal.h:668:5: error: unknown type name ‘pthread_mutex_t’
     pthread_mutex_t process_mutex;
     ^
src/libswscale/swscale_internal.h:669:5: error: unknown type name ‘pthread_mutex_t’
     pthread_mutex_t finish_mutex;
     ^
make: *** [libswscale/alphablend.o] Error 1
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Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

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