;*****************************************************************************
;* mc-a2.asm: x86 motion compensation
;*****************************************************************************
;* Copyright (C) 2005-2012 x264 project
;*
;* Authors: Loren Merritt <lorenm@u.washington.edu>
;*          Jason Garrett-Glaser <darkshikari@gmail.com>
;*          Holger Lubitz <holger@lubitz.org>
;*          Mathieu Monnier <manao@melix.net>
;*          Oskar Arvidsson <oskar@irock.se>
;*
;* This program is free software; you can redistribute it and/or modify
;* it under the terms of the GNU General Public License as published by
;* the Free Software Foundation; either version 2 of the License, or
;* (at your option) any later version.
;*
;* This program 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 General Public License for more details.
;*
;* You should have received a copy of the GNU General Public License
;* along with this program; if not, write to the Free Software
;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02111, USA.
;*
;* This program is also available under a commercial proprietary license.
;* For more information, contact us at licensing@x264.com.
;*****************************************************************************

%include "x86inc.asm"
%include "x86util.asm"

SECTION_RODATA

filt_mul20: times 16 db 20
filt_mul15: times 8 db 1, -5
filt_mul51: times 8 db -5, 1
hpel_shuf: db 0,8,1,9,2,10,3,11,4,12,5,13,6,14,7,15
deinterleave_shuf: db 0,2,4,6,8,10,12,14,1,3,5,7,9,11,13,15
%if HIGH_BIT_DEPTH
deinterleave_shuf32a: SHUFFLE_MASK_W 0,2,4,6,8,10,12,14
deinterleave_shuf32b: SHUFFLE_MASK_W 1,3,5,7,9,11,13,15
%else
deinterleave_shuf32a: db 0,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30
deinterleave_shuf32b: db 1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31
%endif

pd_16: times 4 dd 16
pd_0f: times 4 dd 0xffff
pf_inv256: times 8 dd 0.00390625

pad10: times 8 dw    10*PIXEL_MAX
pad20: times 8 dw    20*PIXEL_MAX
pad30: times 8 dw    30*PIXEL_MAX
depad: times 4 dd 32*20*PIXEL_MAX + 512

tap1: times 4 dw  1, -5
tap2: times 4 dw 20, 20
tap3: times 4 dw -5,  1

SECTION .text

cextern pb_0
cextern pw_1
cextern pw_16
cextern pw_32
cextern pw_00ff
cextern pw_3fff
cextern pw_pixel_max
cextern pd_ffff

%macro LOAD_ADD 4
    movh       %4, %3
    movh       %1, %2
    punpcklbw  %4, m0
    punpcklbw  %1, m0
    paddw      %1, %4
%endmacro

%macro LOAD_ADD_2 6
    mova       %5, %3
    mova       %1, %4
    punpckhbw  %6, %5, m0
    punpcklbw  %5, m0
    punpckhbw  %2, %1, m0
    punpcklbw  %1, m0
    paddw      %1, %5
    paddw      %2, %6
%endmacro

%macro FILT_V2 6
    psubw  %1, %2  ; a-b
    psubw  %4, %5
    psubw  %2, %3  ; b-c
    psubw  %5, %6
    psllw  %2, 2
    psllw  %5, 2
    psubw  %1, %2  ; a-5*b+4*c
    psllw  %3, 4
    psubw  %4, %5
    psllw  %6, 4
    paddw  %1, %3  ; a-5*b+20*c
    paddw  %4, %6
%endmacro

%macro FILT_H 3
    psubw  %1, %2  ; a-b
    psraw  %1, 2   ; (a-b)/4
    psubw  %1, %2  ; (a-b)/4-b
    paddw  %1, %3  ; (a-b)/4-b+c
    psraw  %1, 2   ; ((a-b)/4-b+c)/4
    paddw  %1, %3  ; ((a-b)/4-b+c)/4+c = (a-5*b+20*c)/16
%endmacro

%macro FILT_H2 6
    psubw  %1, %2
    psubw  %4, %5
    psraw  %1, 2
    psraw  %4, 2
    psubw  %1, %2
    psubw  %4, %5
    paddw  %1, %3
    paddw  %4, %6
    psraw  %1, 2
    psraw  %4, 2
    paddw  %1, %3
    paddw  %4, %6
%endmacro

%macro FILT_PACK 4-6 b
    paddw      %1, %4
    paddw      %2, %4
%if %0 == 6
    psubusw    %1, %6
    psubusw    %2, %6
    psrlw      %1, %3
    psrlw      %2, %3
%else
    psraw      %1, %3
    psraw      %2, %3
%endif
%ifnidn w, %5
    packuswb %1, %2
%endif
%endmacro

;The hpel_filter routines use non-temporal writes for output.
;The following defines may be uncommented for testing.
;Doing the hpel_filter temporal may be a win if the last level cache
;is big enough (preliminary benching suggests on the order of 4* framesize).

;%define movntq movq
;%define movntps movaps
;%define sfence

%if HIGH_BIT_DEPTH
;-----------------------------------------------------------------------------
; void hpel_filter_v( uint16_t *dst, uint16_t *src, int16_t *buf, intptr_t stride, intptr_t width );
;-----------------------------------------------------------------------------
%macro HPEL_FILTER 0
cglobal hpel_filter_v, 5,6,11
    FIX_STRIDES r3, r4
    lea        r5, [r1+r3]
    sub        r1, r3
    sub        r1, r3
%if num_mmregs > 8
    mova       m8, [pad10]
    mova       m9, [pad20]
    mova      m10, [pad30]
    %define s10 m8
    %define s20 m9
    %define s30 m10
%else
    %define s10 [pad10]
    %define s20 [pad20]
    %define s30 [pad30]
%endif
    add        r0, r4
    add        r2, r4
    neg        r4
    mova       m7, [pw_pixel_max]
    pxor       m0, m0
.loop:
    mova       m1, [r1]
    mova       m2, [r1+r3]
    mova       m3, [r1+r3*2]
    mova       m4, [r1+mmsize]
    mova       m5, [r1+r3+mmsize]
    mova       m6, [r1+r3*2+mmsize]
    paddw      m1, [r5+r3*2]
    paddw      m2, [r5+r3]
    paddw      m3, [r5]
    paddw      m4, [r5+r3*2+mmsize]
    paddw      m5, [r5+r3+mmsize]
    paddw      m6, [r5+mmsize]
    add        r1, 2*mmsize
    add        r5, 2*mmsize
    FILT_V2    m1, m2, m3, m4, m5, m6
    mova       m6, [pw_16]
    psubw      m1, s20
    psubw      m4, s20
    mova      [r2+r4], m1
    mova      [r2+r4+mmsize], m4
    paddw      m1, s30
    paddw      m4, s30
    FILT_PACK  m1, m4, 5, m6, w, s10
    CLIPW      m1, m0, m7
    CLIPW      m4, m0, m7
    mova      [r0+r4], m1
    mova      [r0+r4+mmsize], m4
    add        r4, 2*mmsize
    jl .loop
    REP_RET

;-----------------------------------------------------------------------------
; void hpel_filter_c( uint16_t *dst, int16_t *buf, intptr_t width );
;-----------------------------------------------------------------------------
cglobal hpel_filter_c, 3,3,10
    add        r2, r2
    add        r0, r2
    add        r1, r2
    neg        r2
    mova       m0, [tap1]
    mova       m7, [tap3]
%if num_mmregs > 8
    mova       m8, [tap2]
    mova       m9, [depad]
    %define s1 m8
    %define s2 m9
%else
    %define s1 [tap2]
    %define s2 [depad]
%endif
.loop:
    movu       m1, [r1+r2-4]
    movu       m2, [r1+r2-2]
    mova       m3, [r1+r2+0]
    movu       m4, [r1+r2+2]
    movu       m5, [r1+r2+4]
    movu       m6, [r1+r2+6]
    pmaddwd    m1, m0
    pmaddwd    m2, m0
    pmaddwd    m3, s1
    pmaddwd    m4, s1
    pmaddwd    m5, m7
    pmaddwd    m6, m7
    paddd      m1, s2
    paddd      m2, s2
    paddd      m3, m5
    paddd      m4, m6
    paddd      m1, m3
    paddd      m2, m4
    psrad      m1, 10
    psrad      m2, 10
    pslld      m2, 16
    pand       m1, [pd_0f]
    por        m1, m2
    CLIPW      m1, [pb_0], [pw_pixel_max]
    mova  [r0+r2], m1
    add        r2, mmsize
    jl .loop
    REP_RET

;-----------------------------------------------------------------------------
; void hpel_filter_h( uint16_t *dst, uint16_t *src, intptr_t width );
;-----------------------------------------------------------------------------
cglobal hpel_filter_h, 3,4,8
    %define src r1+r2
    add        r2, r2
    add        r0, r2
    add        r1, r2
    neg        r2
    mova       m0, [pw_pixel_max]
.loop:
    movu       m1, [src-4]
    movu       m2, [src-2]
    mova       m3, [src+0]
    movu       m6, [src+2]
    movu       m4, [src+4]
    movu       m5, [src+6]
    paddw      m3, m6 ; c0
    paddw      m2, m4 ; b0
    paddw      m1, m5 ; a0
%if mmsize == 16
    movu       m4, [src-4+mmsize]
    movu       m5, [src-2+mmsize]
%endif
    movu       m7, [src+4+mmsize]
    movu       m6, [src+6+mmsize]
    paddw      m5, m7 ; b1
    paddw      m4, m6 ; a1
    movu       m7, [src+2+mmsize]
    mova       m6, [src+0+mmsize]
    paddw      m6, m7 ; c1
    FILT_H2    m1, m2, m3, m4, m5, m6
    mova       m7, [pw_1]
    pxor       m2, m2
    FILT_PACK  m1, m4, 1, m7, w
    CLIPW      m1, m2, m0
    CLIPW      m4, m2, m0
    mova      [r0+r2], m1
    mova      [r0+r2+mmsize], m4
    add        r2, mmsize*2
    jl .loop
    REP_RET
%endmacro ; HPEL_FILTER

INIT_MMX mmx2
HPEL_FILTER
INIT_XMM sse2
HPEL_FILTER
%endif ; HIGH_BIT_DEPTH

%if HIGH_BIT_DEPTH == 0
%macro HPEL_V 1
;-----------------------------------------------------------------------------
; void hpel_filter_v( uint8_t *dst, uint8_t *src, int16_t *buf, intptr_t stride, intptr_t width );
;-----------------------------------------------------------------------------
cglobal hpel_filter_v, 5,6,%1
    lea r5, [r1+r3]
    sub r1, r3
    sub r1, r3
    add r0, r4
    lea r2, [r2+r4*2]
    neg r4
%if cpuflag(ssse3)
    mova m0, [filt_mul15]
%else
    pxor m0, m0
%endif
.loop:
%if cpuflag(ssse3)
    mova m1, [r1]
    mova m4, [r1+r3]
    mova m2, [r5+r3*2]
    mova m5, [r5+r3]
    mova m3, [r1+r3*2]
    mova m6, [r5]
    SBUTTERFLY bw, 1, 4, 7
    SBUTTERFLY bw, 2, 5, 7
    SBUTTERFLY bw, 3, 6, 7
    pmaddubsw m1, m0
    pmaddubsw m4, m0
    pmaddubsw m2, m0
    pmaddubsw m5, m0
    pmaddubsw m3, [filt_mul20]
    pmaddubsw m6, [filt_mul20]
    paddw  m1, m2
    paddw  m4, m5
    paddw  m1, m3
    paddw  m4, m6
%else
    LOAD_ADD_2 m1, m4, [r1     ], [r5+r3*2], m6, m7            ; a0 / a1
    LOAD_ADD_2 m2, m5, [r1+r3  ], [r5+r3  ], m6, m7            ; b0 / b1
    LOAD_ADD   m3,     [r1+r3*2], [r5     ], m7                ; c0
    LOAD_ADD   m6,     [r1+r3*2+mmsize/2], [r5+mmsize/2], m7   ; c1
    FILT_V2 m1, m2, m3, m4, m5, m6
%endif
    mova      m7, [pw_16]
    mova      [r2+r4*2], m1
    mova      [r2+r4*2+mmsize], m4
    FILT_PACK m1, m4, 5, m7
    movnta    [r0+r4], m1
    add r1, mmsize
    add r5, mmsize
    add r4, mmsize
    jl .loop
    REP_RET
%endmacro

;-----------------------------------------------------------------------------
; void hpel_filter_c( uint8_t *dst, int16_t *buf, intptr_t width );
;-----------------------------------------------------------------------------
INIT_MMX
cglobal hpel_filter_c_mmx2, 3,3
    add r0, r2
    lea r1, [r1+r2*2]
    neg r2
    %define src r1+r2*2
    movq m7, [pw_32]
.loop:
    movq   m1, [src-4]
    movq   m2, [src-2]
    movq   m3, [src  ]
    movq   m4, [src+4]
    movq   m5, [src+6]
    paddw  m3, [src+2]  ; c0
    paddw  m2, m4       ; b0
    paddw  m1, m5       ; a0
    movq   m6, [src+8]
    paddw  m4, [src+14] ; a1
    paddw  m5, [src+12] ; b1
    paddw  m6, [src+10] ; c1
    FILT_H2 m1, m2, m3, m4, m5, m6
    FILT_PACK m1, m4, 6, m7
    movntq [r0+r2], m1
    add r2, 8
    jl .loop
    REP_RET

;-----------------------------------------------------------------------------
; void hpel_filter_h( uint8_t *dst, uint8_t *src, intptr_t width );
;-----------------------------------------------------------------------------
cglobal hpel_filter_h_mmx2, 3,3
    add r0, r2
    add r1, r2
    neg r2
    %define src r1+r2
    pxor m0, m0
.loop:
    movd       m1, [src-2]
    movd       m2, [src-1]
    movd       m3, [src  ]
    movd       m6, [src+1]
    movd       m4, [src+2]
    movd       m5, [src+3]
    punpcklbw  m1, m0
    punpcklbw  m2, m0
    punpcklbw  m3, m0
    punpcklbw  m6, m0
    punpcklbw  m4, m0
    punpcklbw  m5, m0
    paddw      m3, m6 ; c0
    paddw      m2, m4 ; b0
    paddw      m1, m5 ; a0
    movd       m7, [src+7]
    movd       m6, [src+6]
    punpcklbw  m7, m0
    punpcklbw  m6, m0
    paddw      m4, m7 ; c1
    paddw      m5, m6 ; b1
    movd       m7, [src+5]
    movd       m6, [src+4]
    punpcklbw  m7, m0
    punpcklbw  m6, m0
    paddw      m6, m7 ; a1
    movq       m7, [pw_1]
    FILT_H2 m1, m2, m3, m4, m5, m6
    FILT_PACK m1, m4, 1, m7
    movntq     [r0+r2], m1
    add r2, 8
    jl .loop
    REP_RET

INIT_XMM

%macro HPEL_C 0
;-----------------------------------------------------------------------------
; void hpel_filter_c( uint8_t *dst, int16_t *buf, intptr_t width );
;-----------------------------------------------------------------------------
cglobal hpel_filter_c, 3,3,9
    add r0, r2
    lea r1, [r1+r2*2]
    neg r2
    %define src r1+r2*2
%ifnidn cpuname, sse2
    mova    m7, [pw_32]
    %define tpw_32 m7
%elif ARCH_X86_64
    mova    m8, [pw_32]
    %define tpw_32 m8
%else
    %define tpw_32 [pw_32]
%endif
; This doesn't seem to be faster (with AVX) on Sandy Bridge or Bulldozer...
%if cpuflag(misalign)
.loop:
    movu    m4, [src-4]
    movu    m5, [src-2]
    mova    m6, [src]
    movu    m3, [src+12]
    movu    m2, [src+14]
    mova    m1, [src+16]
    paddw   m4, [src+6]
    paddw   m5, [src+4]
    paddw   m6, [src+2]
    paddw   m3, [src+22]
    paddw   m2, [src+20]
    paddw   m1, [src+18]
    FILT_H2 m4, m5, m6, m3, m2, m1
%else
    mova      m0, [src-16]
    mova      m1, [src]
.loop:
    mova      m2, [src+16]
    PALIGNR   m4, m1, m0, 12, m7
    PALIGNR   m5, m1, m0, 14, m0
    PALIGNR   m0, m2, m1, 6, m7
    paddw     m4, m0
    PALIGNR   m0, m2, m1, 4, m7
    paddw     m5, m0
    PALIGNR   m6, m2, m1, 2, m7
    paddw     m6, m1
    FILT_H    m4, m5, m6

    mova      m0, m2
    mova      m5, m2
    PALIGNR   m2, m1, 12, m7
    PALIGNR   m5, m1, 14, m1
    mova      m1, [src+32]
    PALIGNR   m3, m1, m0, 6, m7
    paddw     m3, m2
    PALIGNR   m6, m1, m0, 4, m7
    paddw     m5, m6
    PALIGNR   m6, m1, m0, 2, m7
    paddw     m6, m0
    FILT_H    m3, m5, m6
%endif
    FILT_PACK m4, m3, 6, tpw_32
    movntps [r0+r2], m4
    add r2, 16
    jl .loop
    REP_RET
%endmacro

;-----------------------------------------------------------------------------
; void hpel_filter_h( uint8_t *dst, uint8_t *src, intptr_t width );
;-----------------------------------------------------------------------------
cglobal hpel_filter_h_sse2, 3,3,8
    add r0, r2
    add r1, r2
    neg r2
    %define src r1+r2
    pxor m0, m0
.loop:
    movh       m1, [src-2]
    movh       m2, [src-1]
    movh       m3, [src  ]
    movh       m4, [src+1]
    movh       m5, [src+2]
    movh       m6, [src+3]
    punpcklbw  m1, m0
    punpcklbw  m2, m0
    punpcklbw  m3, m0
    punpcklbw  m4, m0
    punpcklbw  m5, m0
    punpcklbw  m6, m0
    paddw      m3, m4 ; c0
    paddw      m2, m5 ; b0
    paddw      m1, m6 ; a0
    movh       m4, [src+6]
    movh       m5, [src+7]
    movh       m6, [src+10]
    movh       m7, [src+11]
    punpcklbw  m4, m0
    punpcklbw  m5, m0
    punpcklbw  m6, m0
    punpcklbw  m7, m0
    paddw      m5, m6 ; b1
    paddw      m4, m7 ; a1
    movh       m6, [src+8]
    movh       m7, [src+9]
    punpcklbw  m6, m0
    punpcklbw  m7, m0
    paddw      m6, m7 ; c1
    mova       m7, [pw_1] ; FIXME xmm8
    FILT_H2 m1, m2, m3, m4, m5, m6
    FILT_PACK m1, m4, 1, m7
    movntps    [r0+r2], m1
    add r2, 16
    jl .loop
    REP_RET

;-----------------------------------------------------------------------------
; void hpel_filter_h( uint8_t *dst, uint8_t *src, intptr_t width );
;-----------------------------------------------------------------------------
%macro HPEL_H 0
cglobal hpel_filter_h, 3,3
    add r0, r2
    add r1, r2
    neg r2
    %define src r1+r2
    mova      m0, [src-16]
    mova      m1, [src]
    mova      m7, [pw_16]
.loop:
    mova      m2, [src+16]
    ; Using unaligned loads instead of palignr is marginally slower on SB and significantly
    ; slower on Bulldozer, despite their fast load units -- even though it would let us avoid
    ; the repeated loads of constants for pmaddubsw.
    palignr   m3, m1, m0, 14
    palignr   m4, m1, m0, 15
    palignr   m0, m2, m1, 2
    pmaddubsw m3, [filt_mul15]
    pmaddubsw m4, [filt_mul15]
    pmaddubsw m0, [filt_mul51]
    palignr   m5, m2, m1, 1
    palignr   m6, m2, m1, 3
    paddw     m3, m0
    mova      m0, m1
    pmaddubsw m1, [filt_mul20]
    pmaddubsw m5, [filt_mul20]
    pmaddubsw m6, [filt_mul51]
    paddw     m3, m1
    paddw     m4, m5
    paddw     m4, m6
    FILT_PACK m3, m4, 5, m7
    pshufb    m3, [hpel_shuf]
    mova      m1, m2
    movntps [r0+r2], m3
    add r2, 16
    jl .loop
    REP_RET
%endmacro

INIT_MMX mmx2
HPEL_V 0
INIT_XMM sse2
HPEL_V 8
INIT_XMM sse2, misalign
HPEL_C
%if ARCH_X86_64 == 0
INIT_XMM sse2
HPEL_C
INIT_XMM ssse3
HPEL_C
HPEL_V 0
HPEL_H
INIT_XMM avx
HPEL_C
HPEL_V 0
HPEL_H
%endif

%if ARCH_X86_64
%macro DO_FILT_V 5
    ;The optimum prefetch distance is difficult to determine in checkasm:
    ;any prefetch seems slower than not prefetching.
    ;In real use, the prefetch seems to be a slight win.
    ;+16 is picked somewhat arbitrarily here based on the fact that even one
    ;loop iteration is going to take longer than the prefetch.
    prefetcht0 [r1+r2*2+16]
%if cpuflag(ssse3)
    mova m1, [r3]
    mova m2, [r3+r2]
    mova %3, [r3+r2*2]
    mova m3, [r1]
    mova %1, [r1+r2]
    mova %2, [r1+r2*2]
    punpckhbw m4, m1, m2
    punpcklbw m1, m2
    punpckhbw m2, %1, %2
    punpcklbw %1, %2
    punpckhbw %2, m3, %3
    punpcklbw m3, %3

    pmaddubsw m1, m12
    pmaddubsw m4, m12
    pmaddubsw %1, m0
    pmaddubsw m2, m0
    pmaddubsw m3, m14
    pmaddubsw %2, m14

    paddw m1, %1
    paddw m4, m2
    paddw m1, m3
    paddw m4, %2
%else
    LOAD_ADD_2 m1, m4, [r3     ], [r1+r2*2], m2, m5            ; a0 / a1
    LOAD_ADD_2 m2, m5, [r3+r2  ], [r1+r2  ], m3, m6            ; b0 / b1
    LOAD_ADD_2 m3, m6, [r3+r2*2], [r1     ], %3, %4            ; c0 / c1
    packuswb %3, %4
    FILT_V2 m1, m2, m3, m4, m5, m6
%endif
    add       r3, 16
    add       r1, 16
    mova      %1, m1
    mova      %2, m4
    FILT_PACK m1, m4, 5, m15
    movntps  [r8+r4+%5], m1
%endmacro

%macro FILT_C 4
    PALIGNR   m1, %2, %1, 12, m2
    PALIGNR   m2, %2, %1, 14, %1
    PALIGNR   m3, %3, %2, 4, %1
    PALIGNR   m4, %3, %2, 2, %1
    paddw     m3, m2
    mova      %1, %3
    PALIGNR   %3, %2, 6, m2
    paddw     m4, %2
    paddw     %3, m1
    FILT_H    %3, m3, m4
%endmacro

%macro DO_FILT_C 4
    FILT_C %1, %2, %3, 6
    FILT_C %2, %1, %4, 6
    FILT_PACK %3, %4, 6, m15
    movntps   [r5+r4], %3
%endmacro

%macro ADD8TO16 5
    punpckhbw %3, %1, %5
    punpcklbw %1, %5
    punpcklbw %4, %2, %5
    punpckhbw %2, %5
    paddw     %2, %3
    paddw     %1, %4
%endmacro

%macro DO_FILT_H 3
    PALIGNR   m1, %2, %1, 14, m3
    PALIGNR   m2, %2, %1, 15, m3
    PALIGNR   m4, %3, %2, 1 , m3
    PALIGNR   m5, %3, %2, 2 , m3
    PALIGNR   m6, %3, %2, 3 , m3
    mova      %1, %2
%if cpuflag(ssse3)
    pmaddubsw m1, m12
    pmaddubsw m2, m12
    pmaddubsw %2, m14
    pmaddubsw m4, m14
    pmaddubsw m5, m0
    pmaddubsw m6, m0
    paddw     m1, %2
    paddw     m2, m4
    paddw     m1, m5
    paddw     m2, m6
    FILT_PACK m1, m2, 5, m15
    pshufb    m1, [hpel_shuf]
%else ; ssse3, avx
    ADD8TO16  m1, m6, m12, m3, m0 ; a
    ADD8TO16  m2, m5, m12, m3, m0 ; b
    ADD8TO16  %2, m4, m12, m3, m0 ; c
    FILT_V2   m1, m2, %2, m6, m5, m4
    FILT_PACK m1, m6, 5, m15
%endif
    movntps [r0+r4], m1
    mova      %2, %3
%endmacro

%macro HPEL 0
;-----------------------------------------------------------------------------
; void hpel_filter( uint8_t *dsth, uint8_t *dstv, uint8_t *dstc,
;                   uint8_t *src, intptr_t stride, int width, int height )
;-----------------------------------------------------------------------------
cglobal hpel_filter, 7,9,16
    mov       r7, r3
    sub      r5d, 16
    mov       r8, r1
    and       r7, 15
    sub       r3, r7
    add       r0, r5
    add       r8, r5
    add       r7, r5
    add       r5, r2
    mov       r2, r4
    neg       r7
    lea       r1, [r3+r2]
    sub       r3, r2
    sub       r3, r2
    mov       r4, r7
    mova     m15, [pw_16]
%if cpuflag(ssse3)
    mova      m0, [filt_mul51]
    mova     m12, [filt_mul15]
    mova     m14, [filt_mul20]
%else
    pxor      m0, m0
%endif
;ALIGN 16
.loopy:
; first filter_v
    DO_FILT_V m8, m7, m13, m12, 0
;ALIGN 16
.loopx:
    DO_FILT_V m6, m5, m11, m12, 16
.lastx:
    paddw   m15, m15 ; pw_32
    DO_FILT_C m9, m8, m7, m6
    psrlw   m15, 1 ; pw_16
    movdqa   m7, m5
    DO_FILT_H m10, m13, m11
    add      r4, 16
    jl .loopx
    cmp      r4, 16
    jl .lastx
; setup regs for next y
    sub      r4, r7
    sub      r4, r2
    sub      r1, r4
    sub      r3, r4
    add      r0, r2
    add      r8, r2
    add      r5, r2
    mov      r4, r7
    sub     r6d, 1
    jg .loopy
    sfence
    RET
%endmacro

INIT_XMM sse2
HPEL
INIT_XMM ssse3
HPEL
INIT_XMM avx
HPEL
%endif ; ARCH_X86_64

%undef movntq
%undef movntps
%undef sfence
%endif ; !HIGH_BIT_DEPTH

;-----------------------------------------------------------------------------
; void plane_copy_core( pixel *dst, intptr_t i_dst,
;                       pixel *src, intptr_t i_src, int w, int h )
;-----------------------------------------------------------------------------
; assumes i_dst and w are multiples of 16, and i_dst>w
INIT_MMX
cglobal plane_copy_core_mmx2, 6,7
    FIX_STRIDES r1, r3, r4d
%if HIGH_BIT_DEPTH == 0
    movsxdifnidn r4, r4d
%endif
    sub    r1,  r4
    sub    r3,  r4
.loopy:
    lea   r6d, [r4-63]
.loopx:
    prefetchnta [r2+256]
    movq   m0, [r2   ]
    movq   m1, [r2+ 8]
    movntq [r0   ], m0
    movntq [r0+ 8], m1
    movq   m2, [r2+16]
    movq   m3, [r2+24]
    movntq [r0+16], m2
    movntq [r0+24], m3
    movq   m4, [r2+32]
    movq   m5, [r2+40]
    movntq [r0+32], m4
    movntq [r0+40], m5
    movq   m6, [r2+48]
    movq   m7, [r2+56]
    movntq [r0+48], m6
    movntq [r0+56], m7
    add    r2,  64
    add    r0,  64
    sub    r6d, 64
    jg .loopx
    prefetchnta [r2+256]
    add    r6d, 63
    jle .end16
.loop16:
    movq   m0, [r2  ]
    movq   m1, [r2+8]
    movntq [r0  ], m0
    movntq [r0+8], m1
    add    r2,  16
    add    r0,  16
    sub    r6d, 16
    jg .loop16
.end16:
    add    r0, r1
    add    r2, r3
    dec    r5d
    jg .loopy
    sfence
    emms
    RET


%macro INTERLEAVE 4-5 ; dst, srcu, srcv, is_aligned, nt_hint
%if HIGH_BIT_DEPTH
%assign x 0
%rep 16/mmsize
    mov%4     m0, [%2+(x/2)*mmsize]
    mov%4     m1, [%3+(x/2)*mmsize]
    punpckhwd m2, m0, m1
    punpcklwd m0, m1
    mov%5a    [%1+(x+0)*mmsize], m0
    mov%5a    [%1+(x+1)*mmsize], m2
    %assign x (x+2)
%endrep
%else
    movq   m0, [%2]
%if mmsize==16
%ifidn %4, a
    punpcklbw m0, [%3]
%else
    movq   m1, [%3]
    punpcklbw m0, m1
%endif
    mov%5a [%1], m0
%else
    movq   m1, [%3]
    punpckhbw m2, m0, m1
    punpcklbw m0, m1
    mov%5a [%1+0], m0
    mov%5a [%1+8], m2
%endif
%endif ; HIGH_BIT_DEPTH
%endmacro

%macro DEINTERLEAVE 6 ; dstu, dstv, src, dstv==dstu+8, shuffle constant, is aligned
%if HIGH_BIT_DEPTH
%assign n 0
%rep 16/mmsize
    mova     m0, [%3+(n+0)*mmsize]
    mova     m1, [%3+(n+1)*mmsize]
    psrld    m2, m0, 16
    psrld    m3, m1, 16
    pand     m0, %5
    pand     m1, %5
    packssdw m0, m1
    packssdw m2, m3
    mov%6    [%1+(n/2)*mmsize], m0
    mov%6    [%2+(n/2)*mmsize], m2
    %assign n (n+2)
%endrep
%else ; !HIGH_BIT_DEPTH
%if mmsize==16
    mova   m0, [%3]
%if cpuflag(ssse3)
    pshufb m0, %5
%else
    mova   m1, m0
    pand   m0, %5
    psrlw  m1, 8
    packuswb m0, m1
%endif
%if %4
    mova   [%1], m0
%else
    movq   [%1], m0
    movhps [%2], m0
%endif
%else
    mova   m0, [%3]
    mova   m1, [%3+8]
    mova   m2, m0
    mova   m3, m1
    pand   m0, %5
    pand   m1, %5
    psrlw  m2, 8
    psrlw  m3, 8
    packuswb m0, m1
    packuswb m2, m3
    mova   [%1], m0
    mova   [%2], m2
%endif ; mmsize == 16
%endif ; HIGH_BIT_DEPTH
%endmacro

%macro PLANE_INTERLEAVE 0
;-----------------------------------------------------------------------------
; void plane_copy_interleave_core( uint8_t *dst,  intptr_t i_dst,
;                                  uint8_t *srcu, intptr_t i_srcu,
;                                  uint8_t *srcv, intptr_t i_srcv, int w, int h )
;-----------------------------------------------------------------------------
; assumes i_dst and w are multiples of 16, and i_dst>2*w
cglobal plane_copy_interleave_core, 6,9
    mov   r6d, r6m
%if HIGH_BIT_DEPTH
    FIX_STRIDES r1, r3, r5, r6d
    movifnidn r1mp, r1
    movifnidn r3mp, r3
    mov  r6m, r6d
%endif
    lea    r0, [r0+r6*2]
    add    r2,  r6
    add    r4,  r6
%if ARCH_X86_64
    DECLARE_REG_TMP 7,8
%else
    DECLARE_REG_TMP 1,3
%endif
    mov  t1, r1
    shr  t1, SIZEOF_PIXEL
    sub  t1, r6
    mov  t0d, r7m
.loopy:
    mov    r6d, r6m
    neg    r6
.prefetch:
    prefetchnta [r2+r6]
    prefetchnta [r4+r6]
    add    r6, 64
    jl .prefetch
    mov    r6d, r6m
    neg    r6
.loopx:
    INTERLEAVE r0+r6*2+ 0*SIZEOF_PIXEL, r2+r6+0*SIZEOF_PIXEL, r4+r6+0*SIZEOF_PIXEL, u, nt
    INTERLEAVE r0+r6*2+16*SIZEOF_PIXEL, r2+r6+8*SIZEOF_PIXEL, r4+r6+8*SIZEOF_PIXEL, u, nt
    add    r6, 16*SIZEOF_PIXEL
    jl .loopx
.pad:
%assign n 0
%rep SIZEOF_PIXEL
%if mmsize==8
    movntq [r0+r6*2+(n+ 0)], m0
    movntq [r0+r6*2+(n+ 8)], m0
    movntq [r0+r6*2+(n+16)], m0
    movntq [r0+r6*2+(n+24)], m0
%else
    movntdq [r0+r6*2+(n+ 0)], m0
    movntdq [r0+r6*2+(n+16)], m0
%endif
    %assign n n+32
%endrep
    add    r6, 16*SIZEOF_PIXEL
    cmp    r6, t1
    jl .pad
    add    r0, r1mp
    add    r2, r3mp
    add    r4, r5
    dec    t0d
    jg .loopy
    sfence
    emms
    RET

;-----------------------------------------------------------------------------
; void store_interleave_chroma( uint8_t *dst, intptr_t i_dst, uint8_t *srcu, uint8_t *srcv, int height )
;-----------------------------------------------------------------------------
cglobal store_interleave_chroma, 5,5
    FIX_STRIDES r1
.loop:
    INTERLEAVE r0+ 0, r2+           0, r3+           0, a
    INTERLEAVE r0+r1, r2+FDEC_STRIDEB, r3+FDEC_STRIDEB, a
    add    r2, FDEC_STRIDEB*2
    add    r3, FDEC_STRIDEB*2
    lea    r0, [r0+r1*2]
    sub   r4d, 2
    jg .loop
    REP_RET
%endmacro ; PLANE_INTERLEAVE

%macro DEINTERLEAVE_START 0
%if HIGH_BIT_DEPTH
    mova   m4, [pd_ffff]
%elif cpuflag(ssse3)
    mova   m4, [deinterleave_shuf]
%else
    mova   m4, [pw_00ff]
%endif ; HIGH_BIT_DEPTH
%endmacro

%macro PLANE_DEINTERLEAVE 0
;-----------------------------------------------------------------------------
; void plane_copy_deinterleave( pixel *dstu, intptr_t i_dstu,
;                               pixel *dstv, intptr_t i_dstv,
;                               pixel *src,  intptr_t i_src, int w, int h )
;-----------------------------------------------------------------------------
cglobal plane_copy_deinterleave, 6,7
    DEINTERLEAVE_START
    mov    r6d, r6m
    FIX_STRIDES r1, r3, r5, r6d
%if HIGH_BIT_DEPTH
    mov    r6m, r6d
%endif
    add    r0,  r6
    add    r2,  r6
    lea    r4, [r4+r6*2]
.loopy:
    mov    r6d, r6m
    neg    r6
.loopx:
    DEINTERLEAVE r0+r6+0*SIZEOF_PIXEL, r2+r6+0*SIZEOF_PIXEL, r4+r6*2+ 0*SIZEOF_PIXEL, 0, m4, u
    DEINTERLEAVE r0+r6+8*SIZEOF_PIXEL, r2+r6+8*SIZEOF_PIXEL, r4+r6*2+16*SIZEOF_PIXEL, 0, m4, u
    add    r6, 16*SIZEOF_PIXEL
    jl .loopx
    add    r0, r1
    add    r2, r3
    add    r4, r5
    dec dword r7m
    jg .loopy
    REP_RET

;-----------------------------------------------------------------------------
; void load_deinterleave_chroma_fenc( pixel *dst, pixel *src, intptr_t i_src, int height )
;-----------------------------------------------------------------------------
cglobal load_deinterleave_chroma_fenc, 4,4
    DEINTERLEAVE_START
    FIX_STRIDES r2
.loop:
    DEINTERLEAVE r0+           0, r0+FENC_STRIDEB*1/2, r1+ 0, 1, m4, a
    DEINTERLEAVE r0+FENC_STRIDEB, r0+FENC_STRIDEB*3/2, r1+r2, 1, m4, a
    add    r0, FENC_STRIDEB*2
    lea    r1, [r1+r2*2]
    sub   r3d, 2
    jg .loop
    REP_RET

;-----------------------------------------------------------------------------
; void load_deinterleave_chroma_fdec( pixel *dst, pixel *src, intptr_t i_src, int height )
;-----------------------------------------------------------------------------
cglobal load_deinterleave_chroma_fdec, 4,4
    DEINTERLEAVE_START
    FIX_STRIDES r2
.loop:
    DEINTERLEAVE r0+           0, r0+FDEC_STRIDEB*1/2, r1+ 0, 0, m4, a
    DEINTERLEAVE r0+FDEC_STRIDEB, r0+FDEC_STRIDEB*3/2, r1+r2, 0, m4, a
    add    r0, FDEC_STRIDEB*2
    lea    r1, [r1+r2*2]
    sub   r3d, 2
    jg .loop
    REP_RET
%endmacro ; PLANE_DEINTERLEAVE

%if HIGH_BIT_DEPTH
INIT_MMX mmx2
PLANE_INTERLEAVE
INIT_MMX mmx
PLANE_DEINTERLEAVE
INIT_XMM sse2
PLANE_INTERLEAVE
PLANE_DEINTERLEAVE
INIT_XMM avx
PLANE_INTERLEAVE
PLANE_DEINTERLEAVE
%else
INIT_MMX mmx2
PLANE_INTERLEAVE
INIT_MMX mmx
PLANE_DEINTERLEAVE
INIT_XMM sse2
PLANE_INTERLEAVE
PLANE_DEINTERLEAVE
INIT_XMM ssse3
PLANE_DEINTERLEAVE
%endif

; These functions are not general-use; not only do the SSE ones require aligned input,
; but they also will fail if given a non-mod16 size.
; memzero SSE will fail for non-mod128.

;-----------------------------------------------------------------------------
; void *memcpy_aligned( void *dst, const void *src, size_t n );
;-----------------------------------------------------------------------------
INIT_MMX
cglobal memcpy_aligned_mmx, 3,3
    test r2d, 16
    jz .copy32start
    movq mm0, [r1 + r2 - 16]
    movq mm1, [r1 + r2 -  8]
    movq [r0 + r2 - 16], mm0
    movq [r0 + r2 -  8], mm1
    sub  r2d, 16
.copy32start
    test r2d, r2d
    jz .ret
.copy32:
    movq mm0, [r1 + r2 - 32]
    movq mm1, [r1 + r2 - 24]
    movq mm2, [r1 + r2 - 16]
    movq mm3, [r1 + r2 -  8]
    movq [r0 + r2 - 32], mm0
    movq [r0 + r2 - 24], mm1
    movq [r0 + r2 - 16], mm2
    movq [r0 + r2 -  8], mm3
    sub  r2d, 32
    jg .copy32
.ret
    REP_RET

;-----------------------------------------------------------------------------
; void *memcpy_aligned( void *dst, const void *src, size_t n );
;-----------------------------------------------------------------------------
cglobal memcpy_aligned_sse2, 3,3
    test r2d, 16
    jz .copy32
    movdqa xmm0, [r1 + r2 - 16]
    movdqa [r0 + r2 - 16], xmm0
    sub  r2d, 16
.copy32:
    test r2d, 32
    jz .copy64start
    movdqa xmm0, [r1 + r2 - 32]
    movdqa [r0 + r2 - 32], xmm0
    movdqa xmm1, [r1 + r2 - 16]
    movdqa [r0 + r2 - 16], xmm1
    sub  r2d, 32
.copy64start
    test r2d, r2d
    jz .ret
.copy64:
    movdqa xmm0, [r1 + r2 - 64]
    movdqa [r0 + r2 - 64], xmm0
    movdqa xmm1, [r1 + r2 - 48]
    movdqa [r0 + r2 - 48], xmm1
    movdqa xmm2, [r1 + r2 - 32]
    movdqa [r0 + r2 - 32], xmm2
    movdqa xmm3, [r1 + r2 - 16]
    movdqa [r0 + r2 - 16], xmm3
    sub  r2d, 64
    jg .copy64
.ret:
    REP_RET

;-----------------------------------------------------------------------------
; void *memzero_aligned( void *dst, size_t n );
;-----------------------------------------------------------------------------
%macro MEMZERO 0
cglobal memzero_aligned, 2,2
    add  r0, r1
    neg  r1
    pxor m0, m0
.loop:
%assign i 0
%rep 8
    mova [r0 + r1 + i], m0
%assign i i+mmsize
%endrep
    add r1, mmsize*8
    jl .loop
    REP_RET
%endmacro

INIT_MMX mmx
MEMZERO
INIT_XMM sse2
MEMZERO



%if HIGH_BIT_DEPTH == 0
;-----------------------------------------------------------------------------
; void integral_init4h( uint16_t *sum, uint8_t *pix, intptr_t stride )
;-----------------------------------------------------------------------------
INIT_XMM
cglobal integral_init4h_sse4, 3,4
    lea     r3, [r0+r2*2]
    add     r1, r2
    neg     r2
    pxor    m4, m4
.loop:
    movdqa  m0, [r1+r2]
    movdqa  m1, [r1+r2+16]
    palignr m1, m0, 8
    mpsadbw m0, m4, 0
    mpsadbw m1, m4, 0
    paddw   m0, [r0+r2*2]
    paddw   m1, [r0+r2*2+16]
    movdqa  [r3+r2*2   ], m0
    movdqa  [r3+r2*2+16], m1
    add     r2, 16
    jl .loop
    REP_RET

%macro INTEGRAL_INIT8H 0
cglobal integral_init8h, 3,4
    lea     r3, [r0+r2*2]
    add     r1, r2
    neg     r2
    pxor    m4, m4
.loop:
    movdqa  m0, [r1+r2]
    movdqa  m1, [r1+r2+16]
    palignr m1, m0, 8
    mpsadbw m2, m0, m4, 4
    mpsadbw m3, m1, m4, 4
    mpsadbw m0, m4, 0
    mpsadbw m1, m4, 0
    paddw   m0, [r0+r2*2]
    paddw   m1, [r0+r2*2+16]
    paddw   m0, m2
    paddw   m1, m3
    movdqa  [r3+r2*2   ], m0
    movdqa  [r3+r2*2+16], m1
    add     r2, 16
    jl .loop
    REP_RET
%endmacro

INIT_XMM sse4
INTEGRAL_INIT8H
INIT_XMM avx
INTEGRAL_INIT8H
%endif ; !HIGH_BIT_DEPTH

%macro INTEGRAL_INIT_8V 0
;-----------------------------------------------------------------------------
; void integral_init8v( uint16_t *sum8, intptr_t stride )
;-----------------------------------------------------------------------------
cglobal integral_init8v, 3,3
    shl   r1, 1
    add   r0, r1
    lea   r2, [r0+r1*8]
    neg   r1
.loop:
    mova  m0, [r2+r1]
    mova  m1, [r2+r1+mmsize]
    psubw m0, [r0+r1]
    psubw m1, [r0+r1+mmsize]
    mova  [r0+r1], m0
    mova  [r0+r1+mmsize], m1
    add   r1, 2*mmsize
    jl .loop
    REP_RET
%endmacro

INIT_MMX mmx
INTEGRAL_INIT_8V
INIT_XMM sse2
INTEGRAL_INIT_8V

;-----------------------------------------------------------------------------
; void integral_init4v( uint16_t *sum8, uint16_t *sum4, intptr_t stride )
;-----------------------------------------------------------------------------
INIT_MMX
cglobal integral_init4v_mmx, 3,5
    shl   r2, 1
    lea   r3, [r0+r2*4]
    lea   r4, [r0+r2*8]
    mova  m0, [r0+r2]
    mova  m4, [r4+r2]
.loop:
    mova  m1, m4
    psubw m1, m0
    mova  m4, [r4+r2-8]
    mova  m0, [r0+r2-8]
    paddw m1, m4
    mova  m3, [r3+r2-8]
    psubw m1, m0
    psubw m3, m0
    mova  [r0+r2-8], m1
    mova  [r1+r2-8], m3
    sub   r2, 8
    jge .loop
    REP_RET

INIT_XMM
cglobal integral_init4v_sse2, 3,5
    shl     r2, 1
    add     r0, r2
    add     r1, r2
    lea     r3, [r0+r2*4]
    lea     r4, [r0+r2*8]
    neg     r2
.loop:
    mova    m0, [r0+r2]
    mova    m1, [r4+r2]
    mova    m2, m0
    mova    m4, m1
    shufpd  m0, [r0+r2+16], 1
    shufpd  m1, [r4+r2+16], 1
    paddw   m0, m2
    paddw   m1, m4
    mova    m3, [r3+r2]
    psubw   m1, m0
    psubw   m3, m2
    mova  [r0+r2], m1
    mova  [r1+r2], m3
    add     r2, 16
    jl .loop
    REP_RET

cglobal integral_init4v_ssse3, 3,5
    shl     r2, 1
    add     r0, r2
    add     r1, r2
    lea     r3, [r0+r2*4]
    lea     r4, [r0+r2*8]
    neg     r2
.loop:
    mova    m2, [r0+r2]
    mova    m0, [r0+r2+16]
    mova    m4, [r4+r2]
    mova    m1, [r4+r2+16]
    palignr m0, m2, 8
    palignr m1, m4, 8
    paddw   m0, m2
    paddw   m1, m4
    mova    m3, [r3+r2]
    psubw   m1, m0
    psubw   m3, m2
    mova  [r0+r2], m1
    mova  [r1+r2], m3
    add     r2, 16
    jl .loop
    REP_RET

%macro FILT8x4 7
    mova      %3, [r0+%7]
    mova      %4, [r0+r5+%7]
    pavgb     %3, %4
    pavgb     %4, [r0+r5*2+%7]
    PALIGNR   %1, %3, 1, m6
    PALIGNR   %2, %4, 1, m6
%if cpuflag(xop)
    pavgb     %1, %3
    pavgb     %2, %4
%else
    pavgb     %1, %3
    pavgb     %2, %4
    psrlw     %5, %1, 8
    psrlw     %6, %2, 8
    pand      %1, m7
    pand      %2, m7
%endif
%endmacro

%macro FILT16x2 4
    mova      m3, [r0+%4+mmsize]
    mova      m2, [r0+%4]
    pavgb     m3, [r0+%4+r5+mmsize]
    pavgb     m2, [r0+%4+r5]
    PALIGNR   %1, m3, 1, m6
    pavgb     %1, m3
    PALIGNR   m3, m2, 1, m6
    pavgb     m3, m2
%if cpuflag(xop)
    vpperm    m5, m3, %1, m7
    vpperm    m3, m3, %1, m6
%else
    psrlw     m5, m3, 8
    psrlw     m4, %1, 8
    pand      m3, m7
    pand      %1, m7
    packuswb  m3, %1
    packuswb  m5, m4
%endif
    mova    [%2], m3
    mova    [%3], m5
    mova      %1, m2
%endmacro

%macro FILT8x2U 3
    mova      m3, [r0+%3+8]
    mova      m2, [r0+%3]
    pavgb     m3, [r0+%3+r5+8]
    pavgb     m2, [r0+%3+r5]
    mova      m1, [r0+%3+9]
    mova      m0, [r0+%3+1]
    pavgb     m1, [r0+%3+r5+9]
    pavgb     m0, [r0+%3+r5+1]
    pavgb     m1, m3
    pavgb     m0, m2
    psrlw     m3, m1, 8
    psrlw     m2, m0, 8
    pand      m1, m7
    pand      m0, m7
    packuswb  m0, m1
    packuswb  m2, m3
    mova    [%1], m0
    mova    [%2], m2
%endmacro

%macro FILT8xU 3
    mova      m3, [r0+%3+8]
    mova      m2, [r0+%3]
    pavgw     m3, [r0+%3+r5+8]
    pavgw     m2, [r0+%3+r5]
    movu      m1, [r0+%3+10]
    movu      m0, [r0+%3+2]
    pavgw     m1, [r0+%3+r5+10]
    pavgw     m0, [r0+%3+r5+2]
    pavgw     m1, m3
    pavgw     m0, m2
    psrld     m3, m1, 16
    psrld     m2, m0, 16
    pand      m1, m7
    pand      m0, m7
    packssdw  m0, m1
    packssdw  m2, m3
    movu    [%1], m0
    mova    [%2], m2
%endmacro

%macro FILT8xA 4
    mova      m3, [r0+%4+mmsize]
    mova      m2, [r0+%4]
    pavgw     m3, [r0+%4+r5+mmsize]
    pavgw     m2, [r0+%4+r5]
    PALIGNR   %1, m3, 2, m6
    pavgw     %1, m3
    PALIGNR   m3, m2, 2, m6
    pavgw     m3, m2
%if cpuflag(xop)
    vpperm    m5, m3, %1, m7
    vpperm    m3, m3, %1, m6
%else
    psrld     m5, m3, 16
    psrld     m4, %1, 16
    pand      m3, m7
    pand      %1, m7
    packssdw  m3, %1
    packssdw  m5, m4
%endif
    mova    [%2], m3
    mova    [%3], m5
    mova      %1, m2
%endmacro

;-----------------------------------------------------------------------------
; void frame_init_lowres_core( uint8_t *src0, uint8_t *dst0, uint8_t *dsth, uint8_t *dstv, uint8_t *dstc,
;                              intptr_t src_stride, intptr_t dst_stride, int width, int height )
;-----------------------------------------------------------------------------
%macro FRAME_INIT_LOWRES 0
cglobal frame_init_lowres_core, 6,7,(12-4*(BIT_DEPTH/9)) ; 8 for HIGH_BIT_DEPTH, 12 otherwise
%if HIGH_BIT_DEPTH
    shl   dword r6m, 1
    FIX_STRIDES r5
    shl   dword r7m, 1
%endif
    ; src += 2*(height-1)*stride + 2*width
    mov      r6d, r8m
    dec      r6d
    imul     r6d, r5d
    add      r6d, r7m
    lea       r0, [r0+r6*2]
    ; dst += (height-1)*stride + width
    mov      r6d, r8m
    dec      r6d
    imul     r6d, r6m
    add      r6d, r7m
    add       r1, r6
    add       r2, r6
    add       r3, r6
    add       r4, r6
    ; gap = stride - width
    mov      r6d, r6m
    sub      r6d, r7m
    PUSH      r6
    %define dst_gap [rsp+gprsize]
    mov      r6d, r5d
    sub      r6d, r7m
    shl      r6d, 1
    PUSH      r6
    %define src_gap [rsp]
%if HIGH_BIT_DEPTH
%if cpuflag(xop)
    mova      m6, [deinterleave_shuf32a]
    mova      m7, [deinterleave_shuf32b]
%else
    pcmpeqw   m7, m7
    psrld     m7, 16
%endif
.vloop:
    mov      r6d, r7m
%ifnidn cpuname, mmx2
    mova      m0, [r0]
    mova      m1, [r0+r5]
    pavgw     m0, m1
    pavgw     m1, [r0+r5*2]
%endif
.hloop:
    sub       r0, mmsize*2
    sub       r1, mmsize
    sub       r2, mmsize
    sub       r3, mmsize
    sub       r4, mmsize
%ifidn cpuname, mmx2
    FILT8xU r1, r2, 0
    FILT8xU r3, r4, r5
%else
    FILT8xA m0, r1, r2, 0
    FILT8xA m1, r3, r4, r5
%endif
    sub      r6d, mmsize
    jg .hloop
%else ; !HIGH_BIT_DEPTH
%if mmsize == 16
    ; adjust for the odd end case
    mov      r6d, r7m
    and      r6d, 8
    sub       r1, r6
    sub       r2, r6
    sub       r3, r6
    sub       r4, r6
    add  dst_gap, r6d
%endif ; mmsize
%if cpuflag(xop)
    mova      m6, [deinterleave_shuf32a]
    mova      m7, [deinterleave_shuf32b]
%else
    pcmpeqb   m7, m7
    psrlw     m7, 8
%endif
.vloop:
    mov      r6d, r7m
%ifnidn cpuname, mmx2
    mova      m0, [r0]
    mova      m1, [r0+r5]
    pavgb     m0, m1
    pavgb     m1, [r0+r5*2]
%endif
%if mmsize == 16
    test     r6d, 8
    jz .hloop
    sub       r0, 16
    FILT8x4   m0, m1, m2, m3, m4, m5, 0
%if cpuflag(xop)
    mova      m4, m0
    vpperm    m0, m4, m1, m6
    vpperm    m1, m4, m1, m7
    movq    [r1], m0
    movq    [r2], m1
    movhps  [r3], m0
    movhps  [r4], m1
%else
    packuswb  m0, m4
    packuswb  m1, m5
    movq    [r1], m0
    movhps  [r2], m0
    movq    [r3], m1
    movhps  [r4], m1
%endif
    mova      m0, m2
    mova      m1, m3
    sub      r6d, 8
    jz .skip
%endif ; mmsize
.hloop:
    sub       r0, mmsize*2
    sub       r1, mmsize
    sub       r2, mmsize
    sub       r3, mmsize
    sub       r4, mmsize
%ifdef m8
    FILT8x4   m0, m1, m2, m3, m10, m11, mmsize
    mova      m8, m0
    mova      m9, m1
    FILT8x4   m2, m3, m0, m1, m4, m5, 0
%if cpuflag(xop)
    vpperm    m4, m2, m8, m7
    vpperm    m2, m2, m8, m6
    vpperm    m5, m3, m9, m7
    vpperm    m3, m3, m9, m6
%else
    packuswb  m2, m8
    packuswb  m3, m9
    packuswb  m4, m10
    packuswb  m5, m11
%endif
    mova    [r1], m2
    mova    [r2], m4
    mova    [r3], m3
    mova    [r4], m5
%elifidn cpuname, mmx2
    FILT8x2U  r1, r2, 0
    FILT8x2U  r3, r4, r5
%else
    FILT16x2  m0, r1, r2, 0
    FILT16x2  m1, r3, r4, r5
%endif
    sub      r6d, mmsize
    jg .hloop
%endif ; HIGH_BIT_DEPTH
.skip:
    mov       r6, dst_gap
    sub       r0, src_gap
    sub       r1, r6
    sub       r2, r6
    sub       r3, r6
    sub       r4, r6
    dec    dword r8m
    jg .vloop
    ADD      rsp, 2*gprsize
    emms
    RET
%endmacro ; FRAME_INIT_LOWRES

INIT_MMX mmx2
FRAME_INIT_LOWRES
%if ARCH_X86_64 == 0
INIT_MMX cache32, mmx2
FRAME_INIT_LOWRES
%endif
INIT_XMM sse2
FRAME_INIT_LOWRES
INIT_XMM ssse3
FRAME_INIT_LOWRES
INIT_XMM avx
FRAME_INIT_LOWRES
INIT_XMM xop
FRAME_INIT_LOWRES

;-----------------------------------------------------------------------------
; void mbtree_propagate_cost( int *dst, uint16_t *propagate_in, uint16_t *intra_costs,
;                             uint16_t *inter_costs, uint16_t *inv_qscales, float *fps_factor, int len )
;-----------------------------------------------------------------------------
%macro MBTREE 0
cglobal mbtree_propagate_cost, 7,7,7
    add        r6d, r6d
    lea         r0, [r0+r6*2]
    add         r1, r6
    add         r2, r6
    add         r3, r6
    add         r4, r6
    neg         r6
    pxor      xmm4, xmm4
    movss     xmm6, [r5]
    shufps    xmm6, xmm6, 0
    mulps     xmm6, [pf_inv256]
    movdqa    xmm5, [pw_3fff]
.loop:
    movq      xmm2, [r2+r6] ; intra
    movq      xmm0, [r4+r6] ; invq
    movq      xmm3, [r3+r6] ; inter
    movq      xmm1, [r1+r6] ; prop
    punpcklwd xmm2, xmm4
    punpcklwd xmm0, xmm4
    pmaddwd   xmm0, xmm2
    pand      xmm3, xmm5
    punpcklwd xmm1, xmm4
    punpcklwd xmm3, xmm4
%if cpuflag(fma4)
    cvtdq2ps  xmm0, xmm0
    cvtdq2ps  xmm1, xmm1
    vfmaddps  xmm0, xmm0, xmm6, xmm1
    cvtdq2ps  xmm1, xmm2
    psubd     xmm2, xmm3
    cvtdq2ps  xmm2, xmm2
    rcpps     xmm3, xmm1
    mulps     xmm1, xmm3
    mulps     xmm0, xmm2
    addps     xmm2, xmm3, xmm3
    vfnmaddps xmm3, xmm1, xmm3, xmm2
    mulps     xmm0, xmm3
%else
    cvtdq2ps  xmm0, xmm0
    mulps     xmm0, xmm6    ; intra*invq*fps_factor>>8
    cvtdq2ps  xmm1, xmm1    ; prop
    addps     xmm0, xmm1    ; prop + (intra*invq*fps_factor>>8)
    cvtdq2ps  xmm1, xmm2    ; intra
    psubd     xmm2, xmm3    ; intra - inter
    cvtdq2ps  xmm2, xmm2    ; intra - inter
    rcpps     xmm3, xmm1    ; 1 / intra 1st approximation
    mulps     xmm1, xmm3    ; intra * (1/intra 1st approx)
    mulps     xmm1, xmm3    ; intra * (1/intra 1st approx)^2
    mulps     xmm0, xmm2    ; (prop + (intra*invq*fps_factor>>8)) * (intra - inter)
    addps     xmm3, xmm3    ; 2 * (1/intra 1st approx)
    subps     xmm3, xmm1    ; 2nd approximation for 1/intra
    mulps     xmm0, xmm3    ; / intra
%endif
    cvtps2dq  xmm0, xmm0
    movdqa [r0+r6*2], xmm0
    add         r6, 8
    jl .loop
    REP_RET
%endmacro

INIT_XMM sse2
MBTREE
; Bulldozer only has a 128-bit float unit, so the AVX version of this function is actually slower.
INIT_XMM fma4
MBTREE

%macro INT16_TO_FLOAT 1
    vpunpckhwd   xmm4, xmm%1, xmm7
    vpunpcklwd  xmm%1, xmm7
    vinsertf128 ymm%1, ymm%1, xmm4, 1
    vcvtdq2ps   ymm%1, ymm%1
%endmacro

; FIXME: align loads/stores to 16 bytes
INIT_YMM avx
cglobal mbtree_propagate_cost, 7,7,8
    add           r6d, r6d
    lea            r0, [r0+r6*2]
    add            r1, r6
    add            r2, r6
    add            r3, r6
    add            r4, r6
    neg            r6
    vmovdqa      xmm5, [pw_3fff]
    vbroadcastss ymm6, [r5]
    vmulps       ymm6, ymm6, [pf_inv256]
    vpxor        xmm7, xmm7
.loop:
    vmovdqu      xmm0, [r2+r6]       ; intra
    vmovdqu      xmm1, [r4+r6]       ; invq
    vmovdqu      xmm2, [r1+r6]       ; prop
    vpand        xmm3, xmm5, [r3+r6] ; inter
    INT16_TO_FLOAT 0
    INT16_TO_FLOAT 1
    INT16_TO_FLOAT 2
    INT16_TO_FLOAT 3
    vmulps       ymm1, ymm1, ymm0
    vsubps       ymm4, ymm0, ymm3
    vmulps       ymm1, ymm1, ymm6    ; intra*invq*fps_factor>>8
    vaddps       ymm1, ymm1, ymm2    ; prop + (intra*invq*fps_factor>>8)
    vrcpps       ymm3, ymm0          ; 1 / intra 1st approximation
    vmulps       ymm2, ymm0, ymm3    ; intra * (1/intra 1st approx)
    vmulps       ymm2, ymm2, ymm3    ; intra * (1/intra 1st approx)^2
    vmulps       ymm1, ymm1, ymm4    ; (prop + (intra*invq*fps_factor>>8)) * (intra - inter)
    vaddps       ymm3, ymm3, ymm3    ; 2 * (1/intra 1st approx)
    vsubps       ymm3, ymm3, ymm2    ; 2nd approximation for 1/intra
    vmulps       ymm1, ymm1, ymm3    ; / intra
    vcvtps2dq    ymm1, ymm1
    vmovdqu [r0+r6*2], ymm1
    add            r6, 16
    jl .loop
    REP_RET
