[x265] Fwd: [PATCH] added pixelsub_ps C primitive and function pointer creation

[Praveen Tiwari]

---------- Forwarded message ----------
From: Steve Borho <steve at borho.org>
Date: Thu, Nov 7, 2013 at 1:51 PM
Subject: Re: [x265] [PATCH] added pixelsub_ps C primitive and function
pointer creation
To: Development for x265 <x265-devel at videolan.org>





On Thu, Nov 7, 2013 at 1:01 AM, <praveen at multicorewareinc.com> wrote:

> # HG changeset patch
> # User Praveen Tiwari
> # Date 1383807695 -19800
> # Node ID 34ba8955747b66dcf3471fa216d15b97a3b07e0c
> # Parent  93cccbe49a93dd4c054ef06aca76974948793613
> added pixelsub_ps C primitive and function pointer creation
>
> diff -r 93cccbe49a93 -r 34ba8955747b source/common/pixel.cpp
> --- a/source/common/pixel.cpp   Wed Nov 06 19:49:38 2013 -0600
> +++ b/source/common/pixel.cpp   Thu Nov 07 12:31:35 2013 +0530
> @@ -790,6 +790,22 @@
>          b += strideb;
>      }
>  }
> +
> +template<int bx, int by>
> +void pixelsub_ps_c(int16_t *a, intptr_t dstride, pixel *b0, pixel *b1,
> intptr_t sstride0, intptr_t sstride1)
> +{
> +    for (int y = 0; y < by; y++)
> +    {
> +        for (int x = 0; x < bx; x++)
> +        {
> +            a[x] = (int16_t)(b0[x] - b1[x]);
> +        }
> +
> +        b0 += sstride0;
> +        b1 += sstride1;
> +        a += dstride;
> +    }
> +}
>  }  // end anonymous namespace
>
>  namespace x265 {
> @@ -832,10 +848,12 @@
>
>  #define CHROMA(W, H) \
>      p.chroma_copy_pp[CHROMA_ ## W ## x ## H] = blockcopy_pp_c<W, H>; \
> -    p.chroma_copy_sp[CHROMA_ ## W ## x ## H] = blockcopy_sp_c<W, H>;
> +    p.chroma_copy_sp[CHROMA_ ## W ## x ## H] = blockcopy_sp_c<W, H>;\
> +    p.chroma_pixelsub_ps[CHROMA_ ## W ## x ## H] = pixelsub_ps_c<W, H>;
>  #define LUMA(W, H) \
>      p.luma_copy_pp[LUMA_ ## W ## x ## H] = blockcopy_pp_c<W, H>; \
> -    p.luma_copy_sp[LUMA_ ## W ## x ## H] = blockcopy_sp_c<W, H>;
> +    p.luma_copy_sp[LUMA_ ## W ## x ## H] = blockcopy_sp_c<W, H>;\
> +    p.luma_pixelsub_ps[LUMA_ ## W ## x ## H] = pixelsub_ps_c<W, H>;
>
>      LUMA(4, 4);
>      LUMA(8, 8);
> diff -r 93cccbe49a93 -r 34ba8955747b source/common/primitives.h
> --- a/source/common/primitives.h        Wed Nov 06 19:49:38 2013 -0600
> +++ b/source/common/primitives.h        Thu Nov 07 12:31:35 2013 +0530
> @@ -216,6 +216,8 @@
>  typedef void (*copy_pp_t)(pixel *dst, intptr_t dstride, pixel *src,
> intptr_t sstride); // dst is aligned
>  typedef void (*copy_sp_t)(pixel *dst, intptr_t dstStride, int16_t *src,
> intptr_t srcStride);
>
> +typedef void (*pixelsub_ps_t)(int16_t *dst, intptr_t dstStride, pixel
> *src0, pixel *src1, intptr_t srcStride0, intptr_t srcStride1);
>

>>there's already a function typedef with the same name, that one needs to
be removed or this one needs to be renamed

I can see only, pixelsub_sp_t  from old function typedef and I have
created typedef void pixelsub_ps_t (pixel to short).


> +
>  /* Define a structure containing function pointers to optimized encoder
>   * primitives.  Each pointer can reference either an assembly routine,
>   * a vectorized primitive, or a C function. */
> @@ -283,6 +285,9 @@
>      pixeladd_pp_t   pixeladd_pp;
>      pixelavg_pp_t   pixelavg_pp[NUM_LUMA_PARTITIONS];
>
> +    pixelsub_ps_t   chroma_pixelsub_ps[NUM_CHROMA_PARTITIONS];
> +    pixelsub_ps_t   luma_pixelsub_ps[NUM_LUMA_PARTITIONS];
> +
>      scale_t         scale1D_128to64;
>      scale_t         scale2D_64to32;
>      downscale_t     frame_init_lowres_core;
> _______________________________________________
> x265-devel mailing list
> x265-devel at videolan.org
> https://mailman.videolan.org/listinfo/x265-devel
>



-- 
Steve Borho

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