FFmpeg/libavcodec/x86/v210.asm

;******************************************************************************
;* V210 SIMD unpack
;* Copyright (c) 2011 Loren Merritt <lorenm@u.washington.edu>
;* Copyright (c) 2011 Kieran Kunhya <kieran@kunhya.com>
;*
;* This file is part of FFmpeg.
;*
;* FFmpeg is free software; you can redistribute it and/or
;* modify it under the terms of the GNU Lesser General Public
;* License as published by the Free Software Foundation; either
;* version 2.1 of the License, or (at your option) any later version.
;*
;* FFmpeg is distributed in the hope that it will be useful,
;* but WITHOUT ANY WARRANTY; without even the implied warranty of
;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
;* Lesser General Public License for more details.
;*
;* You should have received a copy of the GNU Lesser General Public
;* License along with FFmpeg; if not, write to the Free Software
;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
;******************************************************************************

%include "libavutil/x86/x86util.asm"

SECTION_RODATA 32

; for AVX2 version only
v210_luma_permute: dd 0,1,2,4,5,6,7,7  ; 32-byte alignment required
v210_chroma_shuf2: db 0,1,2,3,4,5,8,9,10,11,12,13,-1,-1,-1,-1
v210_luma_shuf_avx2: db 0,1,4,5,6,7,8,9,12,13,14,15,-1,-1,-1,-1
v210_chroma_shuf_avx2: db 0,1,4,5,10,11,-1,-1,2,3,8,9,12,13,-1,-1

v210_mult: dw 64,4,64,4,64,4,64,4
v210_luma_shuf: db 8,9,0,1,2,3,12,13,4,5,6,7,-1,-1,-1,-1
v210_chroma_shuf: db 0,1,8,9,6,7,-1,-1,2,3,4,5,12,13,-1,-1

SECTION .text

%macro v210_planar_unpack 1

; v210_planar_unpack(const uint32_t *src, uint16_t *y, uint16_t *u, uint16_t *v, int width)
cglobal v210_planar_unpack_%1, 5, 5, 6 + 2 * cpuflag(avx2), src, y, u, v, w
    movsxdifnidn wq, wd
    lea    yq, [yq+2*wq]
    add    uq, wq
    add    vq, wq
    neg    wq

    VBROADCASTI128   m3, [v210_mult]

%if cpuflag(avx2)
    VBROADCASTI128   m4, [v210_luma_shuf_avx2]
    VBROADCASTI128   m5, [v210_chroma_shuf_avx2]
    mova             m6, [v210_luma_permute]
    VBROADCASTI128   m7, [v210_chroma_shuf2]
%else
    VBROADCASTI128   m4, [v210_luma_shuf]
    VBROADCASTI128   m5, [v210_chroma_shuf]
%endif

.loop:
%ifidn %1, unaligned
    movu   m0, [srcq]  ; yB v5 yA  u5 y9 v4  y8 u4 y7  v3 y6 u3  y5 v2 y4  u2 y3 v1  y2 u1 y1  v0 y0 u0
%else
    mova   m0, [srcq]
%endif

    pmullw m1, m0, m3
    pslld  m0, 12
    psrlw  m1, 6                       ; yB yA u5 v4 y8 y7 v3 u3 y5 y4 u2 v1 y2 y1 v0 u0
    psrld  m0, 22                      ; 00 v5 00 y9 00 u4 00 y6 00 v2 00 y3 00 u1 00 y0

%if cpuflag(avx2)
    vpblendd m2, m1, m0, 0x55          ; yB yA 00 y9 y8 y7 00 y6 y5 y4 00 y3 y2 y1 00 y0
    pshufb m2, m4                      ; 00 00 yB yA y9 y8 y7 y6 00 00 y5 y4 y3 y2 y1 y0
    vpermd m2, m6, m2                  ; 00 00 00 00 yB yA y9 y8 y7 y6 y5 y4 y3 y2 y1 y0
    movu   [yq+2*wq], m2

    vpblendd m1, m1, m0, 0xaa          ; 00 v5 u5 v4 00 u4 v3 u3 00 v2 u2 v1 00 u1 v0 u0
    pshufb m1, m5                      ; 00 v5 v4 v3 00 u5 u4 u3 00 v2 v1 v0 00 u2 u1 u0
    vpermq m1, m1, 0xd8                ; 00 v5 v4 v3 00 v2 v1 v0 00 u5 u4 u3 00 u2 u1 u0
    pshufb m1, m7                      ; 00 00 v5 v4 v3 v2 v1 v0 00 00 u5 u4 u3 u2 u1 u0

    movu   [uq+wq], xm1
    vextracti128 [vq+wq], m1, 1
%else
    shufps m2, m1, m0, 0x8d            ; 00 y9 00 y6 yB yA y8 y7 00 y3 00 y0 y5 y4 y2 y1
    pshufb m2, m4                      ; 00 00 yB yA y9 y8 y7 y6 00 00 y5 y4 y3 y2 y1 y0
    movu   [yq+2*wq], m2

    shufps m1, m0, 0xd8                ; 00 v5 00 u4 u5 v4 v3 u3 00 v2 00 u1 u2 v1 v0 u0
    pshufb m1, m5                      ; 00 v5 v4 v3 00 u5 u4 u3 00 v2 v1 v0 00 u2 u1 u0

    movq   [uq+wq], m1
    movhps [vq+wq], m1
%endif

    add srcq, mmsize
    add wq, (mmsize*3)/8
    jl  .loop

    REP_RET
%endmacro

INIT_XMM ssse3
v210_planar_unpack unaligned

%if HAVE_AVX_EXTERNAL
INIT_XMM avx
v210_planar_unpack unaligned
%endif

%if HAVE_AVX2_EXTERNAL
INIT_YMM avx2
v210_planar_unpack unaligned
%endif

INIT_XMM ssse3
v210_planar_unpack aligned

%if HAVE_AVX_EXTERNAL
INIT_XMM avx
v210_planar_unpack aligned
%endif

%if HAVE_AVX2_EXTERNAL
INIT_YMM avx2
v210_planar_unpack aligned
%endif