[FFmpeg-devel] [PATCH V6 2/2] libswscale/x86/yuv2rgb: add ssse3 version

[Michael Niedermayer]

On Wed, Jan 08, 2020 at 10:25:59AM +0800, Ting Fu wrote:
> Tested using this command:
> /ffmpeg -pix_fmt yuv420p -s 1920*1080 -i ArashRawYuv420.yuv \
> -vcodec rawvideo -s 1920*1080 -pix_fmt rgb24 -f null /dev/null
> 
> The fps increase from 389 to 640 on Intel(R) Core(TM) i7-8700K CPU @ 3.70GHz
> 
> Signed-off-by: Ting Fu <ting.fu at intel.com>
> ---
>  libswscale/x86/yuv2rgb.c          |   7 +-
>  libswscale/x86/yuv2rgb_template.c |  58 +++++++++++-
>  libswscale/x86/yuv_2_rgb.asm      | 145 ++++++++++++++++++++++++++----
>  3 files changed, 191 insertions(+), 19 deletions(-)
> 
> diff --git a/libswscale/x86/yuv2rgb.c b/libswscale/x86/yuv2rgb.c
> index f3d2bb526e..7015266a7e 100644
> --- a/libswscale/x86/yuv2rgb.c
> +++ b/libswscale/x86/yuv2rgb.c
> @@ -61,13 +61,18 @@ DECLARE_ASM_CONST(8, uint64_t, pb_07) = 0x0707070707070707ULL;
>  #define COMPILE_TEMPLATE_MMXEXT 1
>  #endif /* HAVE_MMXEXT */
>  
> +//SSSE3 versions
> +#if HAVE_SSSE3
> +#define COMPILE_TEMPLATE_SSSE3 1
> +#endif
> +
>  #include "yuv2rgb_template.c"
>  
>  av_cold SwsFunc ff_yuv2rgb_init_x86(SwsContext *c)
>  {
>      int cpu_flags = av_get_cpu_flags();
>  
> -    if (EXTERNAL_MMX(cpu_flags)) {
> +    if (EXTERNAL_MMX(cpu_flags) || EXTERNAL_SSSE3(cpu_flags)) {

I would expect that EXTERNAL_SSSE3 implies EXTERNAL_MMX

thx

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

"I am not trying to be anyone's saviour, I'm trying to think about the
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