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path: root/libavcodec/x86/h264_deblock.asm
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;*****************************************************************************
;* MMX/SSE2/AVX-optimized H.264 deblocking code
;*****************************************************************************
;* Copyright (C) 2005-2011 x264 project
;*
;* Authors: Loren Merritt <lorenm@u.washington.edu>
;*          Fiona Glaser <fiona@x264.com>
;*          Oskar Arvidsson <oskar@irock.se>
;*
;* 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

pb_A1: times 16 db 0xA1
pb_3_1: times 4 db 3, 1

SECTION .text

cextern pb_0
cextern pb_1
cextern pb_3

%define PASS8ROWS(base, base3, stride, stride3, offset) \
    PASS8ROWS(base+offset, base3+offset, stride, stride3)

; in: 8 rows of 4 bytes in %4..%11
; out: 4 rows of 8 bytes in m0..m3
%macro TRANSPOSE4x8_LOAD 11
    movh       m0, %4
    movh       m2, %5
    movh       m1, %6
    movh       m3, %7
    punpckl%1  m0, m2
    punpckl%1  m1, m3
    mova       m2, m0
    punpckl%2  m0, m1
    punpckh%2  m2, m1

    movh       m4, %8
    movh       m6, %9
    movh       m5, %10
    movh       m7, %11
    punpckl%1  m4, m6
    punpckl%1  m5, m7
    mova       m6, m4
    punpckl%2  m4, m5
    punpckh%2  m6, m5

    punpckh%3  m1, m0, m4
    punpckh%3  m3, m2, m6
    punpckl%3  m0, m4
    punpckl%3  m2, m6
%endmacro

; in: 4 rows of 8 bytes in m0..m3
; out: 8 rows of 4 bytes in %1..%8
%macro TRANSPOSE8x4B_STORE 8
    punpckhdq  m4, m0, m0
    punpckhdq  m5, m1, m1
    punpckhdq  m6, m2, m2

    punpcklbw  m0, m1
    punpcklbw  m2, m3
    punpcklwd  m1, m0, m2
    punpckhwd  m0, m2
    movh       %1, m1
    punpckhdq  m1, m1
    movh       %2, m1
    movh       %3, m0
    punpckhdq  m0, m0
    movh       %4, m0

    punpckhdq  m3, m3
    punpcklbw  m4, m5
    punpcklbw  m6, m3
    punpcklwd  m5, m4, m6
    punpckhwd  m4, m6
    movh       %5, m5
    punpckhdq  m5, m5
    movh       %6, m5
    movh       %7, m4
    punpckhdq  m4, m4
    movh       %8, m4
%endmacro

%macro TRANSPOSE4x8B_LOAD 8
    TRANSPOSE4x8_LOAD bw, wd, dq, %1, %2, %3, %4, %5, %6, %7, %8
%endmacro

%macro SBUTTERFLY3 4
    punpckh%1  %4, %2, %3
    punpckl%1  %2, %3
%endmacro

; in: 8 rows of 8 (only the middle 6 pels are used) in %1..%8
; out: 6 rows of 8 in [%9+0*16] .. [%9+5*16]
%macro TRANSPOSE6x8_MEM 9
    RESET_MM_PERMUTATION
    movq  m0, %1
    movq  m1, %2
    movq  m2, %3
    movq  m3, %4
    movq  m4, %5
    movq  m5, %6
    movq  m6, %7
    SBUTTERFLY bw, 0, 1, 7
    SBUTTERFLY bw, 2, 3, 7
    SBUTTERFLY bw, 4, 5, 7
    movq  [%9+0x10], m3
    SBUTTERFLY3 bw, m6, %8, m7
    SBUTTERFLY wd, 0, 2, 3
    SBUTTERFLY wd, 4, 6, 3
    punpckhdq m0, m4
    movq  [%9+0x00], m0
    SBUTTERFLY3 wd, m1, [%9+0x10], m3
    SBUTTERFLY wd, 5, 7, 0
    SBUTTERFLY dq, 1, 5, 0
    SBUTTERFLY dq, 2, 6, 0
    punpckldq m3, m7
    movq  [%9+0x10], m2
    movq  [%9+0x20], m6
    movq  [%9+0x30], m1
    movq  [%9+0x40], m5
    movq  [%9+0x50], m3
    RESET_MM_PERMUTATION
%endmacro

; in: 8 rows of 8 in %1..%8
; out: 8 rows of 8 in %9..%16
%macro TRANSPOSE8x8_MEM 16
    RESET_MM_PERMUTATION
    movq  m0, %1
    movq  m1, %2
    movq  m2, %3
    movq  m3, %4
    movq  m4, %5
    movq  m5, %6
    movq  m6, %7
    SBUTTERFLY bw, 0, 1, 7
    SBUTTERFLY bw, 2, 3, 7
    SBUTTERFLY bw, 4, 5, 7
    SBUTTERFLY3 bw, m6, %8, m7
    movq  %9,  m5
    SBUTTERFLY wd, 0, 2, 5
    SBUTTERFLY wd, 4, 6, 5
    SBUTTERFLY wd, 1, 3, 5
    movq  %11, m6
    movq  m6,  %9
    SBUTTERFLY wd, 6, 7, 5
    SBUTTERFLY dq, 0, 4, 5
    SBUTTERFLY dq, 1, 6, 5
    movq  %9,  m0
    movq  %10, m4
    movq  %13, m1
    movq  %14, m6
    SBUTTERFLY3 dq, m2, %11, m0
    SBUTTERFLY dq, 3, 7, 4
    movq  %11, m2
    movq  %12, m0
    movq  %15, m3
    movq  %16, m7
    RESET_MM_PERMUTATION
%endmacro

; out: %4 = |%1-%2|>%3
; clobbers: %5
%macro DIFF_GT 5
%if avx_enabled == 0
    mova    %5, %2
    mova    %4, %1
    psubusb %5, %1
    psubusb %4, %2
%else
    psubusb %5, %2, %1
    psubusb %4, %1, %2
%endif
    por     %4, %5
    psubusb %4, %3
%endmacro

; out: %4 = |%1-%2|>%3
; clobbers: %5
%macro DIFF_GT2 5
%if ARCH_X86_64
    psubusb %5, %2, %1
    psubusb %4, %1, %2
%else
    mova    %5, %2
    mova    %4, %1
    psubusb %5, %1
    psubusb %4, %2
%endif
    psubusb %5, %3
    psubusb %4, %3
    pcmpeqb %4, %5
%endmacro

; in: m0=p1 m1=p0 m2=q0 m3=q1 %1=alpha-1 %2=beta-1
; out: m5=beta-1, m7=mask, %3=alpha-1
; clobbers: m4,m6
%macro LOAD_MASK 2-3
    movd     m4, %1
    movd     m5, %2
    SPLATW   m4, m4
    SPLATW   m5, m5
    packuswb m4, m4  ; 16x alpha-1
    packuswb m5, m5  ; 16x beta-1
%if %0>2
    mova     %3, m4
%endif
    DIFF_GT  m1, m2, m4, m7, m6 ; |p0-q0| > alpha-1
    DIFF_GT  m0, m1, m5, m4, m6 ; |p1-p0| > beta-1
    por      m7, m4
    DIFF_GT  m3, m2, m5, m4, m6 ; |q1-q0| > beta-1
    por      m7, m4
    pxor     m6, m6
    pcmpeqb  m7, m6
%endmacro

; in: m0=p1 m1=p0 m2=q0 m3=q1 m7=(tc&mask)
; out: m1=p0' m2=q0'
; clobbers: m0,3-6
%macro DEBLOCK_P0_Q0 0
    pcmpeqb m4, m4
    pxor    m5, m1, m2   ; p0^q0
    pxor    m3, m4
    pand    m5, [pb_1]   ; (p0^q0)&1
    pavgb   m3, m0       ; (p1 - q1 + 256)>>1
    pxor    m4, m1
    pavgb   m3, [pb_3]   ; (((p1 - q1 + 256)>>1)+4)>>1 = 64+2+(p1-q1)>>2
    pavgb   m4, m2       ; (q0 - p0 + 256)>>1
    pavgb   m3, m5
    mova    m6, [pb_A1]
    paddusb m3, m4       ; d+128+33
    psubusb m6, m3
    psubusb m3, [pb_A1]
    pminub  m6, m7
    pminub  m3, m7
    psubusb m1, m6
    psubusb m2, m3
    paddusb m1, m3
    paddusb m2, m6
%endmacro

; in: m1=p0 m2=q0
;     %1=p1 %2=q2 %3=[q2] %4=[q1] %5=tc0 %6=tmp
; out: [q1] = clip( (q2+((p0+q0+1)>>1))>>1, q1-tc0, q1+tc0 )
; clobbers: q2, tmp, tc0
%macro LUMA_Q1 6
    pavgb   %6, m1, m2
    pavgb   %2, %6       ; avg(p2,avg(p0,q0))
    pxor    %6, %3
    pand    %6, [pb_1]   ; (p2^avg(p0,q0))&1
    psubusb %2, %6       ; (p2+((p0+q0+1)>>1))>>1
    psubusb %6, %1, %5
    paddusb %5, %1
    pmaxub  %2, %6
    pminub  %2, %5
    mova    %4, %2
%endmacro

%if ARCH_X86_64
;-----------------------------------------------------------------------------
; void ff_deblock_v_luma(uint8_t *pix, int stride, int alpha, int beta,
;                        int8_t *tc0)
;-----------------------------------------------------------------------------
%macro DEBLOCK_LUMA 0
cglobal deblock_v_luma_8, 5,5,10, pix_, stride_, alpha_, beta_, base3_
    movd    m8, [r4] ; tc0
    lea     r4, [stride_q*3]
    dec     alpha_d        ; alpha-1
    neg     r4
    dec     beta_d        ; beta-1
    add     base3_q, pix_q     ; pix-3*stride

    mova    m0, [base3_q + stride_q]   ; p1
    mova    m1, [base3_q + 2*stride_q] ; p0
    mova    m2, [pix_q]      ; q0
    mova    m3, [pix_q + stride_q]   ; q1
    LOAD_MASK r2d, r3d

    punpcklbw m8, m8
    punpcklbw m8, m8 ; tc = 4x tc0[3], 4x tc0[2], 4x tc0[1], 4x tc0[0]
    pcmpeqb m9, m9
    pcmpeqb m9, m8
    pandn   m9, m7
    pand    m8, m9

    movdqa  m3, [base3_q] ; p2
    DIFF_GT2 m1, m3, m5, m6, m7 ; |p2-p0| > beta-1
    pand    m6, m9
    psubb   m7, m8, m6
    pand    m6, m8
    LUMA_Q1 m0, m3, [base3_q], [base3_q + stride_q], m6, m4

    movdqa  m4, [pix_q + 2*stride_q] ; q2
    DIFF_GT2 m2, m4, m5, m6, m3 ; |q2-q0| > beta-1
    pand    m6, m9
    pand    m8, m6
    psubb   m7, m6
    mova    m3, [pix_q + stride_q]
    LUMA_Q1 m3, m4, [pix_q + 2*stride_q], [pix_q + stride_q], m8, m6

    DEBLOCK_P0_Q0
    mova    [base3_q + 2*stride_q], m1
    mova    [pix_q], m2
    RET

;-----------------------------------------------------------------------------
; void ff_deblock_h_luma(uint8_t *pix, int stride, int alpha, int beta,
;                        int8_t *tc0)
;-----------------------------------------------------------------------------
INIT_MMX cpuname
cglobal deblock_h_luma_8, 5,9,0,0x60+16*WIN64
    movsxd r7,  r1d
    lea    r8,  [r7+r7*2]
    lea    r6,  [r0-4]
    lea    r5,  [r0-4+r8]
%if WIN64
    %define pix_tmp rsp+0x30 ; shadow space + r4
%else
    %define pix_tmp rsp
%endif

    ; transpose 6x16 -> tmp space
    TRANSPOSE6x8_MEM  PASS8ROWS(r6, r5, r7, r8), pix_tmp
    lea    r6, [r6+r7*8]
    lea    r5, [r5+r7*8]
    TRANSPOSE6x8_MEM  PASS8ROWS(r6, r5, r7, r8), pix_tmp+8

    ; vertical filter
    ; alpha, beta, tc0 are still in r2d, r3d, r4
    ; don't backup r6, r5, r7, r8 because deblock_v_luma_sse2 doesn't use them
    lea    r0, [pix_tmp+0x30]
    mov    r1d, 0x10
%if WIN64
    mov    [rsp+0x20], r4
%endif
    call   deblock_v_luma_8

    ; transpose 16x4 -> original space  (only the middle 4 rows were changed by the filter)
    add    r6, 2
    add    r5, 2
    movq   m0, [pix_tmp+0x18]
    movq   m1, [pix_tmp+0x28]
    movq   m2, [pix_tmp+0x38]
    movq   m3, [pix_tmp+0x48]
    TRANSPOSE8x4B_STORE  PASS8ROWS(r6, r5, r7, r8)

    shl    r7,  3
    sub    r6,  r7
    sub    r5,  r7
    shr    r7,  3
    movq   m0, [pix_tmp+0x10]
    movq   m1, [pix_tmp+0x20]
    movq   m2, [pix_tmp+0x30]
    movq   m3, [pix_tmp+0x40]
    TRANSPOSE8x4B_STORE  PASS8ROWS(r6, r5, r7, r8)

    RET
%endmacro

%macro DEBLOCK_H_LUMA_MBAFF 0

cglobal deblock_h_luma_mbaff_8, 5, 9, 10, 8*16, pix_, stride_, alpha_, beta_, tc0_, base3_, stride3_
    movsxd stride_q,   stride_d
    dec    alpha_d
    dec    beta_d
    mov    base3_q,    pix_q
    lea    stride3_q, [3*stride_q]
    add    base3_q,    stride3_q

    movq m0, [pix_q - 4]
    movq m1, [pix_q + stride_q - 4]
    movq m2, [pix_q + 2*stride_q - 4]
    movq m3, [base3_q - 4]
    movq m4, [base3_q + stride_q - 4]
    movq m5, [base3_q + 2*stride_q - 4]
    movq m6, [base3_q + stride3_q - 4]
    movq m7, [base3_q + 4*stride_q - 4]

    TRANSPOSE_8X8B 0,1,2,3,4,5,6,7

    %assign i 0
    %rep 8
        movq [rsp + 16*i], m %+ i
        %assign i i+1
    %endrep

    ; p2 = m1 [rsp + 16]
    ; p1 = m2 [rsp + 32]
    ; p0 = m3 [rsp + 48]
    ; q0 = m4 [rsp + 64]
    ; q1 = m5 [rsp + 80]
    ; q2 = m6 [rsp + 96]

    SWAP 0, 2
    SWAP 1, 3
    SWAP 2, 4
    SWAP 3, 5

    LOAD_MASK alpha_d, beta_d
    movd m8, [tc0_q]
    punpcklbw m8, m8
    pcmpeqb m9, m9
    pcmpeqb m9, m8
    pandn   m9, m7
    pand    m8, m9

    movdqa  m3, [rsp + 16] ; p2
    DIFF_GT2 m1, m3, m5, m6, m7 ; |p2-p0| > beta-1
    pand    m6, m9
    psubb   m7, m8, m6
    pand    m6, m8
    LUMA_Q1 m0, m3, [rsp + 16], [rsp + 32], m6, m4

    movdqa  m4, [rsp + 96] ; q2
    DIFF_GT2 m2, m4, m5, m6, m3 ; |q2-q0| > beta-1
    pand    m6, m9
    pand    m8, m6
    psubb   m7, m6
    mova    m3, [rsp + 80]
    LUMA_Q1 m3, m4, [rsp + 96], [rsp + 80], m8, m6

    DEBLOCK_P0_Q0
    SWAP 1, 3
    SWAP 2, 4
    movq m0, [rsp]
    movq m1, [rsp + 16]
    movq m2, [rsp + 32]
    movq m5, [rsp + 80]
    movq m6, [rsp + 96]
    movq m7, [rsp + 112]

    TRANSPOSE_8X8B 0,1,2,3,4,5,6,7
    movq [pix_q - 4], m0
    movq [pix_q + stride_q - 4], m1
    movq [pix_q + 2*stride_q - 4], m2
    movq [base3_q - 4], m3
    movq [base3_q + stride_q - 4], m4
    movq [base3_q + 2*stride_q - 4], m5
    movq [base3_q + stride3_q - 4], m6
    movq [base3_q + 4*stride_q - 4], m7

RET

%endmacro

INIT_XMM sse2
DEBLOCK_H_LUMA_MBAFF
DEBLOCK_LUMA

%if HAVE_AVX_EXTERNAL
INIT_XMM avx
DEBLOCK_H_LUMA_MBAFF
DEBLOCK_LUMA
%endif

%else

%macro DEBLOCK_LUMA 2
;-----------------------------------------------------------------------------
; void ff_deblock_v8_luma(uint8_t *pix, int stride, int alpha, int beta,
;                         int8_t *tc0)
;-----------------------------------------------------------------------------
cglobal deblock_%1_luma_8, 5,5,8,2*%2
    lea     r4, [r1*3]
    dec     r2     ; alpha-1
    neg     r4
    dec     r3     ; beta-1
    add     r4, r0 ; pix-3*stride

    mova    m0, [r4+r1]   ; p1
    mova    m1, [r4+2*r1] ; p0
    mova    m2, [r0]      ; q0
    mova    m3, [r0+r1]   ; q1
    LOAD_MASK r2, r3

    mov     r3, r4mp
    pcmpeqb m3, m3
    movd    m4, [r3] ; tc0
    punpcklbw m4, m4
    punpcklbw m4, m4 ; tc = 4x tc0[3], 4x tc0[2], 4x tc0[1], 4x tc0[0]
    mova   [esp+%2], m4 ; tc
    pcmpgtb m4, m3
    mova    m3, [r4] ; p2
    pand    m4, m7
    mova   [esp], m4 ; mask

    DIFF_GT2 m1, m3, m5, m6, m7 ; |p2-p0| > beta-1
    pand    m6, m4
    pand    m4, [esp+%2] ; tc
    psubb   m7, m4, m6
    pand    m6, m4
    LUMA_Q1 m0, m3, [r4], [r4+r1], m6, m4

    mova    m4, [r0+2*r1] ; q2
    DIFF_GT2 m2, m4, m5, m6, m3 ; |q2-q0| > beta-1
    pand    m6, [esp] ; mask
    mova    m5, [esp+%2] ; tc
    psubb   m7, m6
    pand    m5, m6
    mova    m3, [r0+r1]
    LUMA_Q1 m3, m4, [r0+2*r1], [r0+r1], m5, m6

    DEBLOCK_P0_Q0
    mova    [r4+2*r1], m1
    mova    [r0], m2
    RET

;-----------------------------------------------------------------------------
; void ff_deblock_h_luma(uint8_t *pix, int stride, int alpha, int beta,
;                        int8_t *tc0)
;-----------------------------------------------------------------------------
INIT_MMX cpuname
cglobal deblock_h_luma_8, 0,5,8,0x60+12
    mov    r0, r0mp
    mov    r3, r1m
    lea    r4, [r3*3]
    sub    r0, 4
    lea    r1, [r0+r4]
%define pix_tmp esp+12

    ; transpose 6x16 -> tmp space
    TRANSPOSE6x8_MEM  PASS8ROWS(r0, r1, r3, r4), pix_tmp
    lea    r0, [r0+r3*8]
    lea    r1, [r1+r3*8]
    TRANSPOSE6x8_MEM  PASS8ROWS(r0, r1, r3, r4), pix_tmp+8

    ; vertical filter
    lea    r0, [pix_tmp+0x30]
    PUSH   dword r4m
    PUSH   dword r3m
    PUSH   dword r2m
    PUSH   dword 16
    PUSH   dword r0
    call   deblock_%1_luma_8
%ifidn %1, v8
    add    dword [esp   ], 8 ; pix_tmp+0x38
    add    dword [esp+16], 2 ; tc0+2
    call   deblock_%1_luma_8
%endif
    ADD    esp, 20

    ; transpose 16x4 -> original space  (only the middle 4 rows were changed by the filter)
    mov    r0, r0mp
    sub    r0, 2

    movq   m0, [pix_tmp+0x10]
    movq   m1, [pix_tmp+0x20]
    lea    r1, [r0+r4]
    movq   m2, [pix_tmp+0x30]
    movq   m3, [pix_tmp+0x40]
    TRANSPOSE8x4B_STORE  PASS8ROWS(r0, r1, r3, r4)

    lea    r0, [r0+r3*8]
    lea    r1, [r1+r3*8]
    movq   m0, [pix_tmp+0x18]
    movq   m1, [pix_tmp+0x28]
    movq   m2, [pix_tmp+0x38]
    movq   m3, [pix_tmp+0x48]
    TRANSPOSE8x4B_STORE  PASS8ROWS(r0, r1, r3, r4)

    RET
%endmacro ; DEBLOCK_LUMA

INIT_MMX mmxext
DEBLOCK_LUMA v8, 8
INIT_XMM sse2
DEBLOCK_LUMA v, 16
%if HAVE_AVX_EXTERNAL
INIT_XMM avx
DEBLOCK_LUMA v, 16
%endif

%endif ; ARCH



%macro LUMA_INTRA_P012 4 ; p0..p3 in memory
%if ARCH_X86_64
    pavgb t0, p2, p1
    pavgb t1, p0, q0
%else
    mova  t0, p2
    mova  t1, p0
    pavgb t0, p1
    pavgb t1, q0
%endif
    pavgb t0, t1 ; ((p2+p1+1)/2 + (p0+q0+1)/2 + 1)/2
    mova  t5, t1
%if ARCH_X86_64
    paddb t2, p2, p1
    paddb t3, p0, q0
%else
    mova  t2, p2
    mova  t3, p0
    paddb t2, p1
    paddb t3, q0
%endif
    paddb t2, t3
    mova  t3, t2
    mova  t4, t2
    psrlw t2, 1
    pavgb t2, mpb_0
    pxor  t2, t0
    pand  t2, mpb_1
    psubb t0, t2 ; p1' = (p2+p1+p0+q0+2)/4;

%if ARCH_X86_64
    pavgb t1, p2, q1
    psubb t2, p2, q1
%else
    mova  t1, p2
    mova  t2, p2
    pavgb t1, q1
    psubb t2, q1
%endif
    paddb t3, t3
    psubb t3, t2 ; p2+2*p1+2*p0+2*q0+q1
    pand  t2, mpb_1
    psubb t1, t2
    pavgb t1, p1
    pavgb t1, t5 ; (((p2+q1)/2 + p1+1)/2 + (p0+q0+1)/2 + 1)/2
    psrlw t3, 2
    pavgb t3, mpb_0
    pxor  t3, t1
    pand  t3, mpb_1
    psubb t1, t3 ; p0'a = (p2+2*p1+2*p0+2*q0+q1+4)/8

    pxor  t3, p0, q1
    pavgb t2, p0, q1
    pand  t3, mpb_1
    psubb t2, t3
    pavgb t2, p1 ; p0'b = (2*p1+p0+q0+2)/4

    pxor  t1, t2
    pxor  t2, p0
    pand  t1, mask1p
    pand  t2, mask0
    pxor  t1, t2
    pxor  t1, p0
    mova  %1, t1 ; store p0

    mova  t1, %4 ; p3
    paddb t2, t1, p2
    pavgb t1, p2
    pavgb t1, t0 ; (p3+p2+1)/2 + (p2+p1+p0+q0+2)/4
    paddb t2, t2
    paddb t2, t4 ; 2*p3+3*p2+p1+p0+q0
    psrlw t2, 2
    pavgb t2, mpb_0
    pxor  t2, t1
    pand  t2, mpb_1
    psubb t1, t2 ; p2' = (2*p3+3*p2+p1+p0+q0+4)/8

    pxor  t0, p1
    pxor  t1, p2
    pand  t0, mask1p
    pand  t1, mask1p
    pxor  t0, p1
    pxor  t1, p2
    mova  %2, t0 ; store p1
    mova  %3, t1 ; store p2
%endmacro

%macro LUMA_INTRA_SWAP_PQ 0
    %define q1 m0
    %define q0 m1
    %define p0 m2
    %define p1 m3
    %define p2 q2
    %define mask1p mask1q
%endmacro

%macro DEBLOCK_LUMA_INTRA 1
    %define p1 m0
    %define p0 m1
    %define q0 m2
    %define q1 m3
    %define t0 m4
    %define t1 m5
    %define t2 m6
    %define t3 m7
%if ARCH_X86_64
    %define p2 m8
    %define q2 m9
    %define t4 m10
    %define t5 m11
    %define mask0 m12
    %define mask1p m13
%if WIN64
    %define mask1q [rsp]
%else
    %define mask1q [rsp-24]
%endif
    %define mpb_0 m14
    %define mpb_1 m15
%else
    %define spill(x) [esp+16*x]
    %define p2 [r4+r1]
    %define q2 [r0+2*r1]
    %define t4 spill(0)
    %define t5 spill(1)
    %define mask0 spill(2)
    %define mask1p spill(3)
    %define mask1q spill(4)
    %define mpb_0 [pb_0]
    %define mpb_1 [pb_1]
%endif

;-----------------------------------------------------------------------------
; void ff_deblock_v_luma_intra(uint8_t *pix, int stride, int alpha, int beta)
;-----------------------------------------------------------------------------
%if WIN64
cglobal deblock_%1_luma_intra_8, 4,6,16,0x10
%else
cglobal deblock_%1_luma_intra_8, 4,6,16,ARCH_X86_64*0x50-0x50
%endif
    lea     r4, [r1*4]
    lea     r5, [r1*3] ; 3*stride
    dec     r2d        ; alpha-1
    jl .end
    neg     r4
    dec     r3d        ; beta-1
    jl .end
    add     r4, r0     ; pix-4*stride
    mova    p1, [r4+2*r1]
    mova    p0, [r4+r5]
    mova    q0, [r0]
    mova    q1, [r0+r1]
%if ARCH_X86_64
    pxor    mpb_0, mpb_0
    mova    mpb_1, [pb_1]
    LOAD_MASK r2d, r3d, t5 ; m5=beta-1, t5=alpha-1, m7=mask0
    SWAP    7, 12 ; m12=mask0
    pavgb   t5, mpb_0
    pavgb   t5, mpb_1 ; alpha/4+1
    movdqa  p2, [r4+r1]
    movdqa  q2, [r0+2*r1]
    DIFF_GT2 p0, q0, t5, t0, t3 ; t0 = |p0-q0| > alpha/4+1
    DIFF_GT2 p0, p2, m5, t2, t5 ; mask1 = |p2-p0| > beta-1
    DIFF_GT2 q0, q2, m5, t4, t5 ; t4 = |q2-q0| > beta-1
    pand    t0, mask0
    pand    t4, t0
    pand    t2, t0
    mova    mask1q, t4
    mova    mask1p, t2
%else
    LOAD_MASK r2d, r3d, t5 ; m5=beta-1, t5=alpha-1, m7=mask0
    mova    m4, t5
    mova    mask0, m7
    pavgb   m4, [pb_0]
    pavgb   m4, [pb_1] ; alpha/4+1
    DIFF_GT2 p0, q0, m4, m6, m7 ; m6 = |p0-q0| > alpha/4+1
    pand    m6, mask0
    DIFF_GT2 p0, p2, m5, m4, m7 ; m4 = |p2-p0| > beta-1
    pand    m4, m6
    mova    mask1p, m4
    DIFF_GT2 q0, q2, m5, m4, m7 ; m4 = |q2-q0| > beta-1
    pand    m4, m6
    mova    mask1q, m4
%endif
    LUMA_INTRA_P012 [r4+r5], [r4+2*r1], [r4+r1], [r4]
    LUMA_INTRA_SWAP_PQ
    LUMA_INTRA_P012 [r0], [r0+r1], [r0+2*r1], [r0+r5]
.end:
    RET

INIT_MMX cpuname
%if ARCH_X86_64
;-----------------------------------------------------------------------------
; void ff_deblock_h_luma_intra(uint8_t *pix, int stride, int alpha, int beta)
;-----------------------------------------------------------------------------
cglobal deblock_h_luma_intra_8, 4,9,0,0x80
    movsxd r7,  r1d
    lea    r8,  [r7*3]
    lea    r6,  [r0-4]
    lea    r5,  [r0-4+r8]
%if WIN64
    %define pix_tmp rsp+0x20 ; shadow space
%else
    %define pix_tmp rsp
%endif

    ; transpose 8x16 -> tmp space
    TRANSPOSE8x8_MEM  PASS8ROWS(r6, r5, r7, r8), PASS8ROWS(pix_tmp, pix_tmp+0x30, 0x10, 0x30)
    lea    r6, [r6+r7*8]
    lea    r5, [r5+r7*8]
    TRANSPOSE8x8_MEM  PASS8ROWS(r6, r5, r7, r8), PASS8ROWS(pix_tmp+8, pix_tmp+0x38, 0x10, 0x30)

    lea    r0,  [pix_tmp+0x40]
    mov    r1,  0x10
    call   deblock_v_luma_intra_8

    ; transpose 16x6 -> original space (but we can't write only 6 pixels, so really 16x8)
    lea    r5, [r6+r8]
    TRANSPOSE8x8_MEM  PASS8ROWS(pix_tmp+8, pix_tmp+0x38, 0x10, 0x30), PASS8ROWS(r6, r5, r7, r8)
    shl    r7,  3
    sub    r6,  r7
    sub    r5,  r7
    shr    r7,  3
    TRANSPOSE8x8_MEM  PASS8ROWS(pix_tmp, pix_tmp+0x30, 0x10, 0x30), PASS8ROWS(r6, r5, r7, r8)
    RET
%else
cglobal deblock_h_luma_intra_8, 2,4,8,0x80
    lea    r3,  [r1*3]
    sub    r0,  4
    lea    r2,  [r0+r3]
    %define pix_tmp rsp

    ; transpose 8x16 -> tmp space
    TRANSPOSE8x8_MEM  PASS8ROWS(r0, r2, r1, r3), PASS8ROWS(pix_tmp, pix_tmp+0x30, 0x10, 0x30)
    lea    r0,  [r0+r1*8]
    lea    r2,  [r2+r1*8]
    TRANSPOSE8x8_MEM  PASS8ROWS(r0, r2, r1, r3), PASS8ROWS(pix_tmp+8, pix_tmp+0x38, 0x10, 0x30)

    lea    r0,  [pix_tmp+0x40]
    PUSH   dword r3m
    PUSH   dword r2m
    PUSH   dword 16
    PUSH   r0
    call   deblock_%1_luma_intra_8
%ifidn %1, v8
    add    dword [rsp], 8 ; pix_tmp+8
    call   deblock_%1_luma_intra_8
%endif
    ADD    esp, 16

    mov    r1,  r1m
    mov    r0,  r0mp
    lea    r3,  [r1*3]
    sub    r0,  4
    lea    r2,  [r0+r3]
    ; transpose 16x6 -> original space (but we can't write only 6 pixels, so really 16x8)
    TRANSPOSE8x8_MEM  PASS8ROWS(pix_tmp, pix_tmp+0x30, 0x10, 0x30), PASS8ROWS(r0, r2, r1, r3)
    lea    r0,  [r0+r1*8]
    lea    r2,  [r2+r1*8]
    TRANSPOSE8x8_MEM  PASS8ROWS(pix_tmp+8, pix_tmp+0x38, 0x10, 0x30), PASS8ROWS(r0, r2, r1, r3)
    RET
%endif ; ARCH_X86_64
%endmacro ; DEBLOCK_LUMA_INTRA

INIT_XMM sse2
DEBLOCK_LUMA_INTRA v
%if HAVE_AVX_EXTERNAL
INIT_XMM avx
DEBLOCK_LUMA_INTRA v
%endif
%if ARCH_X86_64 == 0
INIT_MMX mmxext
DEBLOCK_LUMA_INTRA v8
%endif

INIT_MMX mmxext

%macro CHROMA_V_START 0
    dec    r2d      ; alpha-1
    dec    r3d      ; beta-1
    mov    t5, r0
    sub    t5, r1
    sub    t5, r1
%endmacro

%macro CHROMA_H_START 0
    dec    r2d
    dec    r3d
    sub    r0, 2
    lea    t6, [r1*3]
    mov    t5, r0
    add    r0, t6
%endmacro

%define t5 r5
%define t6 r6

;-----------------------------------------------------------------------------
; void ff_deblock_v_chroma(uint8_t *pix, int stride, int alpha, int beta,
;                          int8_t *tc0)
;-----------------------------------------------------------------------------
cglobal deblock_v_chroma_8, 5,6
    CHROMA_V_START
    movq  m0, [t5]
    movq  m1, [t5+r1]
    movq  m2, [r0]
    movq  m3, [r0+r1]
    call ff_chroma_inter_body_mmxext
    movq  [t5+r1], m1
    movq  [r0], m2
    RET

;-----------------------------------------------------------------------------
; void ff_deblock_h_chroma(uint8_t *pix, int stride, int alpha, int beta,
;                          int8_t *tc0)
;-----------------------------------------------------------------------------
cglobal deblock_h_chroma_8, 5,7
%if ARCH_X86_64
    ; This could use the red zone on 64 bit unix to avoid the stack pointer
    ; readjustment, but valgrind assumes the red zone is clobbered on
    ; function calls and returns.
    sub   rsp, 16
    %define buf0 [rsp]
    %define buf1 [rsp+8]
%else
    %define buf0 r0m
    %define buf1 r2m
%endif
    CHROMA_H_START
    TRANSPOSE4x8_LOAD  bw, wd, dq, PASS8ROWS(t5, r0, r1, t6)
    movq  buf0, m0
    movq  buf1, m3
    LOAD_MASK  r2d, r3d
    movd       m6, [r4] ; tc0
    punpcklbw  m6, m6
    pand       m7, m6
    DEBLOCK_P0_Q0
    movq  m0, buf0
    movq  m3, buf1
    TRANSPOSE8x4B_STORE PASS8ROWS(t5, r0, r1, t6)
%if ARCH_X86_64
    add   rsp, 16
%endif
    RET

ALIGN 16
ff_chroma_inter_body_mmxext:
    LOAD_MASK  r2d, r3d
    movd       m6, [r4] ; tc0
    punpcklbw  m6, m6
    pand       m7, m6
    DEBLOCK_P0_Q0
    ret

%define t5 r4
%define t6 r5

cglobal deblock_h_chroma422_8, 5, 6
    SUB rsp, (1+ARCH_X86_64*2)*mmsize
    %if ARCH_X86_64
        %define buf0 [rsp+16]
        %define buf1 [rsp+8]
    %else
        %define buf0 r0m
        %define buf1 r2m
    %endif

    movd m6, [r4]
    punpcklbw m6, m6
    movq [rsp], m6
    CHROMA_H_START

    TRANSPOSE4x8B_LOAD PASS8ROWS(t5, r0, r1, t6)
    movq buf0, m0
    movq buf1, m3
    LOAD_MASK r2d, r3d
    movd m6, [rsp]
    punpcklwd m6, m6
    pand m7, m6
    DEBLOCK_P0_Q0
    movq m0, buf0
    movq m3, buf1
    TRANSPOSE8x4B_STORE PASS8ROWS(t5, r0, r1, t6)

    lea r0, [r0+r1*8]
    lea t5, [t5+r1*8]

    TRANSPOSE4x8B_LOAD PASS8ROWS(t5, r0, r1, t6)
    movq buf0, m0
    movq buf1, m3
    LOAD_MASK r2d, r3d
    movd m6, [rsp+4]
    punpcklwd m6, m6
    pand m7, m6
    DEBLOCK_P0_Q0
    movq m0, buf0
    movq m3, buf1
    TRANSPOSE8x4B_STORE PASS8ROWS(t5, r0, r1, t6)
    ADD rsp, (1+ARCH_X86_64*2)*mmsize
RET

; in: %1=p0 %2=p1 %3=q1
; out: p0 = (p0 + q1 + 2*p1 + 2) >> 2
%macro CHROMA_INTRA_P0 3
    movq    m4, %1
    pxor    m4, %3
    pand    m4, [pb_1] ; m4 = (p0^q1)&1
    pavgb   %1, %3
    psubusb %1, m4
    pavgb   %1, %2             ; dst = avg(p1, avg(p0,q1) - ((p0^q1)&1))
%endmacro

;------------------------------------------------------------------------------
; void ff_deblock_v_chroma_intra(uint8_t *pix, int stride, int alpha, int beta)
;------------------------------------------------------------------------------
cglobal deblock_v_chroma_intra_8, 4,5
    CHROMA_V_START
    movq  m0, [t5]
    movq  m1, [t5+r1]
    movq  m2, [r0]
    movq  m3, [r0+r1]
    call ff_chroma_intra_body_mmxext
    movq  [t5+r1], m1
    movq  [r0], m2
    RET

;------------------------------------------------------------------------------
; void ff_deblock_h_chroma_intra(uint8_t *pix, int stride, int alpha, int beta)
;------------------------------------------------------------------------------
cglobal deblock_h_chroma_intra_8, 4,6
    CHROMA_H_START
    TRANSPOSE4x8_LOAD  bw, wd, dq, PASS8ROWS(t5, r0, r1, t6)
    call ff_chroma_intra_body_mmxext
    TRANSPOSE8x4B_STORE PASS8ROWS(t5, r0, r1, t6)
    RET

cglobal deblock_h_chroma422_intra_8, 4, 6
    CHROMA_H_START
    TRANSPOSE4x8_LOAD  bw, wd, dq, PASS8ROWS(t5, r0, r1, t6)
    call ff_chroma_intra_body_mmxext
    TRANSPOSE8x4B_STORE PASS8ROWS(t5, r0, r1, t6)

    lea r0, [r0+r1*8]
    lea t5, [t5+r1*8]

    TRANSPOSE4x8_LOAD  bw, wd, dq, PASS8ROWS(t5, r0, r1, t6)
    call ff_chroma_intra_body_mmxext
    TRANSPOSE8x4B_STORE PASS8ROWS(t5, r0, r1, t6)
RET

ALIGN 16
ff_chroma_intra_body_mmxext:
    LOAD_MASK r2d, r3d
    movq   m5, m1
    movq   m6, m2
    CHROMA_INTRA_P0  m1, m0, m3
    CHROMA_INTRA_P0  m2, m3, m0
    psubb  m1, m5
    psubb  m2, m6
    pand   m1, m7
    pand   m2, m7
    paddb  m1, m5
    paddb  m2, m6
    ret

%macro LOAD_8_ROWS 8
    movd m0, %1
    movd m1, %2
    movd m2, %3
    movd m3, %4
    movd m4, %5
    movd m5, %6
    movd m6, %7
    movd m7, %8
%endmacro

%macro STORE_8_ROWS 8
    movd %1, m0
    movd %2, m1
    movd %3, m2
    movd %4, m3
    movd %5, m4
    movd %6, m5
    movd %7, m6
    movd %8, m7
%endmacro

%macro TRANSPOSE_8x4B_XMM 0
    punpcklbw m0, m1
    punpcklbw m2, m3
    punpcklbw m4, m5
    punpcklbw m6, m7
    punpcklwd m0, m2
    punpcklwd m4, m6
    punpckhdq m2, m0, m4
    punpckldq m0, m4
    MOVHL m1, m0
    MOVHL m3, m2
%endmacro

%macro TRANSPOSE_4x8B_XMM 0
    punpcklbw m0, m1
    punpcklbw m2, m3
    punpckhwd m4, m0, m2
    punpcklwd m0, m2
    MOVHL m6, m4
    MOVHL m2, m0
    pshufd m1, m0, 1
    pshufd m3, m2, 1
    pshufd m5, m4, 1
    pshufd m7, m6, 1
%endmacro

%macro CHROMA_INTER_BODY_XMM 1
    LOAD_MASK alpha_d, beta_d
    movd m6, [tc0_q]
    %rep %1
        punpcklbw m6, m6
    %endrep
    pand m7, m6
    DEBLOCK_P0_Q0
%endmacro

%macro CHROMA_INTRA_BODY_XMM 0
    LOAD_MASK alpha_d, beta_d
    mova    m5,  m1
    mova    m6,  m2
    pxor    m4,  m1, m3
    pand    m4, [pb_1]
    pavgb   m1,  m3
    psubusb m1,  m4
    pavgb   m1,  m0
    pxor    m4,  m2, m0
    pand    m4, [pb_1]
    pavgb   m2,  m0
    psubusb m2,  m4
    pavgb   m2,  m3
    psubb   m1,  m5
    psubb   m2,  m6
    pand    m1,  m7
    pand    m2,  m7
    paddb   m1,  m5
    paddb   m2,  m6
%endmacro

%macro CHROMA_V_START_XMM 1
    movsxdifnidn stride_q, stride_d
    dec alpha_d
    dec beta_d
    mov %1, pix_q
    sub %1, stride_q
    sub %1, stride_q
%endmacro

%macro CHROMA_H_START_XMM 2
    movsxdifnidn stride_q, stride_d
    dec alpha_d
    dec beta_d
    lea %2, [3*stride_q]
    mov %1,  pix_q
    add %1,  %2
%endmacro

%macro DEBLOCK_CHROMA_XMM 1

INIT_XMM %1

cglobal deblock_v_chroma_8, 5, 6, 8, pix_, stride_, alpha_, beta_, tc0_
    CHROMA_V_START_XMM r5
    movq m0, [r5]
    movq m1, [r5 + stride_q]
    movq m2, [pix_q]
    movq m3, [pix_q + stride_q]
    CHROMA_INTER_BODY_XMM 1
    movq [r5 + stride_q], m1
    movq [pix_q], m2
RET

cglobal deblock_h_chroma_8, 5, 7, 8, 0-16, pix_, stride_, alpha_, beta_, tc0_
    CHROMA_H_START_XMM r5, r6
    LOAD_8_ROWS PASS8ROWS(pix_q - 2, r5 - 2, stride_q, r6)
    TRANSPOSE_8x4B_XMM
    movq [rsp], m0
    movq [rsp + 8], m3
    CHROMA_INTER_BODY_XMM 1
    movq m0, [rsp]
    movq m3, [rsp + 8]
    TRANSPOSE_4x8B_XMM
    STORE_8_ROWS PASS8ROWS(pix_q - 2, r5 - 2, stride_q, r6)
RET

cglobal deblock_h_chroma422_8, 5, 7, 8, 0-16, pix_, stride_, alpha_, beta_, tc0_,
    CHROMA_H_START_XMM r5, r6
    LOAD_8_ROWS PASS8ROWS(pix_q - 2, r5 - 2, stride_q, r6)
    TRANSPOSE_8x4B_XMM
    movq [rsp], m0
    movq [rsp + 8], m3
    CHROMA_INTER_BODY_XMM 2
    movq m0, [rsp]
    movq m3, [rsp + 8]
    TRANSPOSE_4x8B_XMM
    STORE_8_ROWS PASS8ROWS(pix_q - 2, r5 - 2, stride_q, r6)

    lea pix_q, [pix_q + 8*stride_q]
    lea r5,    [r5    + 8*stride_q]
    add tc0_q,  2

    LOAD_8_ROWS PASS8ROWS(pix_q - 2, r5 - 2, stride_q, r6)
    TRANSPOSE_8x4B_XMM
    movq [rsp], m0
    movq [rsp + 8], m3
    CHROMA_INTER_BODY_XMM 2
    movq m0, [rsp]
    movq m3, [rsp + 8]
    TRANSPOSE_4x8B_XMM
    STORE_8_ROWS PASS8ROWS(pix_q - 2, r5 - 2, stride_q, r6)
RET

cglobal deblock_v_chroma_intra_8, 4, 5, 8, pix_, stride_, alpha_, beta_
    CHROMA_V_START_XMM r4
    movq m0, [r4]
    movq m1, [r4 + stride_q]
    movq m2, [pix_q]
    movq m3, [pix_q + stride_q]
    CHROMA_INTRA_BODY_XMM
    movq [r4 + stride_q], m1
    movq [pix_q], m2
RET

cglobal deblock_h_chroma_intra_8, 4, 6, 8, pix_, stride_, alpha_, beta_
    CHROMA_H_START_XMM r4, r5
    LOAD_8_ROWS PASS8ROWS(pix_q - 2, r4 - 2, stride_q, r5)
    TRANSPOSE_8x4B_XMM
    CHROMA_INTRA_BODY_XMM
    TRANSPOSE_4x8B_XMM
    STORE_8_ROWS PASS8ROWS(pix_q - 2, r4 - 2, stride_q, r5)
RET

cglobal deblock_h_chroma422_intra_8, 4, 6, 8, pix_, stride_, alpha_, beta_
    CHROMA_H_START_XMM r4, r5
    LOAD_8_ROWS PASS8ROWS(pix_q - 2, r4 - 2, stride_q, r5)
    TRANSPOSE_8x4B_XMM
    CHROMA_INTRA_BODY_XMM
    TRANSPOSE_4x8B_XMM
    STORE_8_ROWS PASS8ROWS(pix_q - 2, r4 - 2, stride_q, r5)

    lea pix_q, [pix_q + 8*stride_q]
    lea r4,    [r4    + 8*stride_q]

    LOAD_8_ROWS PASS8ROWS(pix_q - 2, r4 - 2, stride_q, r5)
    TRANSPOSE_8x4B_XMM
    CHROMA_INTRA_BODY_XMM
    TRANSPOSE_4x8B_XMM
    STORE_8_ROWS PASS8ROWS(pix_q - 2, r4 - 2, stride_q, r5)
RET

%endmacro ; DEBLOCK_CHROMA_XMM

DEBLOCK_CHROMA_XMM sse2
DEBLOCK_CHROMA_XMM avx

;-----------------------------------------------------------------------------
; void ff_h264_loop_filter_strength(int16_t bs[2][4][4], uint8_t nnz[40],
;                                   int8_t ref[2][40], int16_t mv[2][40][2],
;                                   int bidir,    int edges,    int step,
;                                   int mask_mv0, int mask_mv1, int field);
;
; bidir    is 0 or 1
; edges    is 1 or 4
; step     is 1 or 2
; mask_mv0 is 0 or 3
; mask_mv1 is 0 or 1
; field    is 0 or 1
;-----------------------------------------------------------------------------
%macro loop_filter_strength_iteration 7 ; edges, step, mask_mv,
                                        ; dir, d_idx, mask_dir, bidir
%define edgesd    %1
%define stepd     %2
%define mask_mvd  %3
%define dir       %4
%define d_idx     %5
%define mask_dir  %6
%define bidir     %7
    xor          b_idxd, b_idxd ; for (b_idx = 0; b_idx < edges; b_idx += step)
%%.b_idx_loop:
%if mask_dir == 0
    pxor             m0, m0
%endif
    test         b_idxd, dword mask_mvd
    jnz %%.skip_loop_iter                       ; if (!(b_idx & mask_mv))
%if bidir == 1
    movd             m2, [refq+b_idxq+d_idx+12] ; { ref0[bn] }
    punpckldq        m2, [refq+b_idxq+d_idx+52] ; { ref0[bn], ref1[bn] }
    pshufw           m0, [refq+b_idxq+12], 0x44 ; { ref0[b],  ref0[b]  }
    pshufw           m1, [refq+b_idxq+52], 0x44 ; { ref1[b],  ref1[b]  }
    pshufw           m3, m2, 0x4E               ; { ref1[bn], ref0[bn] }
    psubb            m0, m2                     ; { ref0[b] != ref0[bn],
                                                ;   ref0[b] != ref1[bn] }
    psubb            m1, m3                     ; { ref1[b] != ref1[bn],
                                                ;   ref1[b] != ref0[bn] }

    por              m0, m1
    mova             m1, [mvq+b_idxq*4+(d_idx+12)*4]
    mova             m2, [mvq+b_idxq*4+(d_idx+12)*4+mmsize]
    mova             m3, m1
    mova             m4, m2
    psubw            m1, [mvq+b_idxq*4+12*4]
    psubw            m2, [mvq+b_idxq*4+12*4+mmsize]
    psubw            m3, [mvq+b_idxq*4+52*4]
    psubw            m4, [mvq+b_idxq*4+52*4+mmsize]
    packsswb         m1, m2
    packsswb         m3, m4
    paddb            m1, m6
    paddb            m3, m6
    psubusb          m1, m5 ; abs(mv[b] - mv[bn]) >= limit
    psubusb          m3, m5
    packsswb         m1, m3

    por              m0, m1
    mova             m1, [mvq+b_idxq*4+(d_idx+52)*4]
    mova             m2, [mvq+b_idxq*4+(d_idx+52)*4+mmsize]
    mova             m3, m1
    mova             m4, m2
    psubw            m1, [mvq+b_idxq*4+12*4]
    psubw            m2, [mvq+b_idxq*4+12*4+mmsize]
    psubw            m3, [mvq+b_idxq*4+52*4]
    psubw            m4, [mvq+b_idxq*4+52*4+mmsize]
    packsswb         m1, m2
    packsswb         m3, m4
    paddb            m1, m6
    paddb            m3, m6
    psubusb          m1, m5 ; abs(mv[b] - mv[bn]) >= limit
    psubusb          m3, m5
    packsswb         m1, m3

    pshufw           m1, m1, 0x4E
    por              m0, m1
    pshufw           m1, m0, 0x4E
    pminub           m0, m1
%else ; bidir == 0
    movd             m0, [refq+b_idxq+12]
    psubb            m0, [refq+b_idxq+d_idx+12] ; ref[b] != ref[bn]

    mova             m1, [mvq+b_idxq*4+12*4]
    mova             m2, [mvq+b_idxq*4+12*4+mmsize]
    psubw            m1, [mvq+b_idxq*4+(d_idx+12)*4]
    psubw            m2, [mvq+b_idxq*4+(d_idx+12)*4+mmsize]
    packsswb         m1, m2
    paddb            m1, m6
    psubusb          m1, m5 ; abs(mv[b] - mv[bn]) >= limit
    packsswb         m1, m1
    por              m0, m1
%endif ; bidir == 1/0

%%.skip_loop_iter:
    movd             m1, [nnzq+b_idxq+12]
    por              m1, [nnzq+b_idxq+d_idx+12] ; nnz[b] || nnz[bn]

    pminub           m1, m7
    pminub           m0, m7
    psllw            m1, 1
    pxor             m2, m2
    pmaxub           m1, m0
    punpcklbw        m1, m2
    movq [bsq+b_idxq+32*dir], m1

    add          b_idxd, dword stepd
    cmp          b_idxd, dword edgesd
    jl %%.b_idx_loop
%endmacro

INIT_MMX mmxext
cglobal h264_loop_filter_strength, 9, 9, 0, bs, nnz, ref, mv, bidir, edges, \
                                            step, mask_mv0, mask_mv1, field
%define b_idxq bidirq
%define b_idxd bidird
    cmp    dword fieldm, 0
    mova             m7, [pb_1]
    mova             m5, [pb_3]
    je .nofield
    mova             m5, [pb_3_1]
.nofield:
    mova             m6, m5
    paddb            m5, m5

    shl     dword stepd, 3
    shl    dword edgesd, 3
%if ARCH_X86_32
%define mask_mv0d mask_mv0m
%define mask_mv1d mask_mv1m
%endif
    shl dword mask_mv1d, 3
    shl dword mask_mv0d, 3

    cmp    dword bidird, 0
    jne .bidir
    loop_filter_strength_iteration edgesd, stepd, mask_mv1d, 1, -8,  0, 0
    loop_filter_strength_iteration     32,     8, mask_mv0d, 0, -1, -1, 0

    mova             m0, [bsq+mmsize*0]
    mova             m1, [bsq+mmsize*1]
    mova             m2, [bsq+mmsize*2]
    mova             m3, [bsq+mmsize*3]
    TRANSPOSE4x4W 0, 1, 2, 3, 4
    mova  [bsq+mmsize*0], m0
    mova  [bsq+mmsize*1], m1
    mova  [bsq+mmsize*2], m2
    mova  [bsq+mmsize*3], m3
    RET

.bidir:
    loop_filter_strength_iteration edgesd, stepd, mask_mv1d, 1, -8,  0, 1
    loop_filter_strength_iteration     32,     8, mask_mv0d, 0, -1, -1, 1

    mova             m0, [bsq+mmsize*0]
    mova             m1, [bsq+mmsize*1]
    mova             m2, [bsq+mmsize*2]
    mova             m3, [bsq+mmsize*3]
    TRANSPOSE4x4W 0, 1, 2, 3, 4
    mova  [bsq+mmsize*0], m0
    mova  [bsq+mmsize*1], m1
    mova  [bsq+mmsize*2], m2
    mova  [bsq+mmsize*3], m3
    RET