[x265] [PATCH] asm : routine for weightUnidirPixel(), for input width in multiples of 16

[Nabajit Deka]

Please ignore this patch.


On Fri, Nov 22, 2013 at 4:02 PM, <nabajit at multicorewareinc.com> wrote:

> # HG changeset patch
> # User Nabajit Deka
> # Date 1385116295 -19800
> #      Fri Nov 22 16:01:35 2013 +0530
> # Node ID 18fd67c0d27291012b65bf9c48c675d09b5db1f3
> # Parent  5009254d3d3ac92e90b1551444c5eb32ba2f8d31
> asm : routine for weightUnidirPixel(), for input width in multiples of 16.
>
> diff -r 5009254d3d3a -r 18fd67c0d272 source/common/x86/pixel-util.asm
> --- a/source/common/x86/pixel-util.asm  Fri Nov 22 00:17:46 2013 -0600
> +++ b/source/common/x86/pixel-util.asm  Fri Nov 22 16:01:35 2013 +0530
> @@ -670,3 +670,81 @@
>      movd        eax, m7
>
>      RET
> +
>
> +;-------------------------------------------------------------------------------------------------------------------------------------------------------
> +;void weightUnidirPixel(pixel *src, pixel *dst, intptr_t srcStride,
> intptr_t dstStride, int width, int height, int w0, int round, int shift,
> int offset)
>
> +;-------------------------------------------------------------------------------------------------------------------------------------------------------
> +INIT_XMM sse4
> +cglobal weightUnidirPixel, 6, 7, 6
> +
> +    mov         r6d, r6m
> +    shl         r6d, 6
> +    movd        m0, r6d         ; m0 = [w0<<6]
> +
> +    movd        m1, r7m         ; m1 = [round]
> +    punpcklwd   m0, m1          ; assuming both (w0<<6) and round are
> using maximum of 16 bits each.
> +    pshufd      m0, m0, 0       ; m0 = [w0<<6 round]
> +
> +    movd        m1, r8m
> +
> +    movd        m2, r9m
> +    pshufd      m2, m2, 0
> +
> +    mova        m5, [tab_c_1]
> +
> +    sub         r2d, r4d
> +    sub         r3d, r4d
> +
> +.loopH
> +    mov         r6d, r4d
> +    shr         r6d, 4
> +.loopW:
> +    movh        m4, [r0]
> +    pmovzxbw    m4, m4
> +
> +    punpcklwd   m3, m4, m5
> +    pmaddwd     m3, m0
> +    psrad       m3, m1
> +    paddd       m3, m2
> +
> +    punpckhwd   m4, m5
> +    pmaddwd     m4, m0
> +    psrad       m4, m1
> +    paddd       m4, m2
> +
> +    packssdw    m3, m4
> +    packuswb    m3, m3
> +
> +    movh        [r1], m3
> +
> +    movh        m4, [r0 + 8]
> +    pmovzxbw    m4, m4
> +
> +    punpcklwd   m3, m4, m5
> +    pmaddwd     m3, m0
> +    psrad       m3, m1
> +    paddd       m3, m2
> +
> +    punpckhwd   m4, m5
> +    pmaddwd     m4, m0
> +    psrad       m4, m1
> +    paddd       m4, m2
> +
> +    packssdw    m3, m4
> +    packuswb    m3, m3
> +
> +    movh        [r1 + 8], m3
> +
> +    add         r0, 16
> +    add         r1, 16
> +
> +    dec         r6d
> +    jnz         .loopW
> +
> +    lea         r0, [r0 + r2]
> +    lea         r1, [r1 + r3]
> +
> +    dec         r5d
> +    jnz         .loopH
> +
> +    RET
>
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