[FFmpeg-devel] [PATCH] avcodec/vp9/x86: add ff_vp9_loop_filter_v_16_16_ssse3().

Clément Bœsch u at pkh.me
Mon Jan 6 00:12:04 CET 2014


---
17004 decicycles in loop_filter_v_16_16_c, 4193636 runs, 668 skips
frame= 5000 fps= 60 q=0.0 Lsize=N/A time=00:03:28.33 bitrate=N/A

3945 decicycles in ff_vp9_loop_filter_v_16_16_ssse3, 4193869 runs, 435 skips
frame= 5000 fps= 63 q=0.0 Lsize=N/A time=00:03:28.33 bitrate=N/A

Overall decode time with another sample (shorter than the sample used in
previous test):

from:
    ./ffmpeg -v 0 -nostats -threads 1 -i ~/samples/vp9/ped1080p.webm -f null -  9.36s user 0.02s system 99% cpu 9.393 total
    ./ffmpeg -v 0 -nostats -threads 1 -i ~/samples/vp9/ped1080p.webm -f null -  9.35s user 0.03s system 99% cpu 9.396 total
    ./ffmpeg -v 0 -nostats -threads 1 -i ~/samples/vp9/ped1080p.webm -f null -  9.38s user 0.03s system 99% cpu 9.416 total

to:
    ./ffmpeg -v 0 -nostats -threads 1 -i ~/samples/vp9/ped1080p.webm -f null -  8.29s user 0.03s system 99% cpu 8.327 total
    ./ffmpeg -v 0 -nostats -threads 1 -i ~/samples/vp9/ped1080p.webm -f null -  8.30s user 0.02s system 99% cpu 8.333 total
    ./ffmpeg -v 0 -nostats -threads 1 -i ~/samples/vp9/ped1080p.webm -f null -  8.34s user 0.02s system 99% cpu 8.370 total

This might not be considered a final commit since I'll probably push along with
the horizontal one. Though, of course, comments welcome.
---
 libavcodec/x86/Makefile      |   1 +
 libavcodec/x86/vp9dsp_init.c |   3 +
 libavcodec/x86/vp9lpf.asm    | 435 +++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 439 insertions(+)
 create mode 100644 libavcodec/x86/vp9lpf.asm

diff --git a/libavcodec/x86/Makefile b/libavcodec/x86/Makefile
index 2d2d5a0..c7cdc2f 100644
--- a/libavcodec/x86/Makefile
+++ b/libavcodec/x86/Makefile
@@ -102,5 +102,6 @@ YASM-OBJS-$(CONFIG_VP6_DECODER)        += x86/vp6dsp.o
 YASM-OBJS-$(CONFIG_VP8_DECODER)        += x86/vp8dsp.o                  \
                                           x86/vp8dsp_loopfilter.o
 YASM-OBJS-$(CONFIG_VP9_DECODER)        += x86/vp9itxfm.o                \
+                                          x86/vp9lpf.o                  \
                                           x86/vp9mc.o
 YASM-OBJS-$(CONFIG_WEBP_DECODER)       += x86/vp8dsp.o
diff --git a/libavcodec/x86/vp9dsp_init.c b/libavcodec/x86/vp9dsp_init.c
index 62264bf..3a0dafa 100644
--- a/libavcodec/x86/vp9dsp_init.c
+++ b/libavcodec/x86/vp9dsp_init.c
@@ -160,6 +160,8 @@ void ff_vp9_idct_idct_4x4_add_ssse3(uint8_t *dst, ptrdiff_t stride, int16_t *blo
 void ff_vp9_idct_idct_8x8_add_ssse3(uint8_t *dst, ptrdiff_t stride, int16_t *block, int eob);
 void ff_vp9_idct_idct_16x16_add_ssse3(uint8_t *dst, ptrdiff_t stride, int16_t *block, int eob);
 
+void ff_vp9_loop_filter_v_16_16_ssse3(uint8_t *dst, ptrdiff_t stride, int E, int I, int H);
+
 #endif /* HAVE_YASM */
 
 av_cold void ff_vp9dsp_init_x86(VP9DSPContext *dsp)
@@ -217,6 +219,7 @@ av_cold void ff_vp9dsp_init_x86(VP9DSPContext *dsp)
         if (ARCH_X86_64) {
             dsp->itxfm_add[TX_8X8][DCT_DCT] = ff_vp9_idct_idct_8x8_add_ssse3;
             dsp->itxfm_add[TX_16X16][DCT_DCT] = ff_vp9_idct_idct_16x16_add_ssse3;
+            dsp->loop_filter_16[1] = ff_vp9_loop_filter_v_16_16_ssse3;
         }
     }
 
diff --git a/libavcodec/x86/vp9lpf.asm b/libavcodec/x86/vp9lpf.asm
new file mode 100644
index 0000000..7af5db7
--- /dev/null
+++ b/libavcodec/x86/vp9lpf.asm
@@ -0,0 +1,435 @@
+;******************************************************************************
+;* VP9 loop filter SIMD optimizations
+;*
+;* Copyright (C) 2013 Clément Bœsch <u pkh me>
+;*
+;* 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
+;******************************************************************************
+
+%if ARCH_X86_64
+
+%include "libavutil/x86/x86util.asm"
+
+SECTION_RODATA
+
+cextern pb_3
+cextern pb_80
+
+pb_4:   times 16 db 0x04
+pb_10:  times 16 db 0x10
+pb_40:  times 16 db 0x40
+pb_81:  times 16 db 0x81
+pb_f8:  times 16 db 0xf8
+pb_fe:  times 16 db 0xfe
+
+pw_4:   times  8 dw 4
+pw_8:   times  8 dw 8
+
+SECTION .text
+
+; %1 = abs(%2-%3)
+%macro ABSSUB 4 ; dst, src1 (RO), src2 (RO), tmp
+    psubusb             %1, %3, %2
+    psubusb             %4, %2, %3
+    por                 %1, %4
+%endmacro
+
+; %1 = %1<=%2
+%macro CMP_LTE 4 ; src/dst, cmp, tmp, pb_80
+    pxor                %1, %4
+    pcmpgtb             %3, %2, %1          ; cmp > src?
+    pcmpeqb             %1, %2              ; cmp == src? XXX: avoid this with a -1/+1 well placed?
+    por                 %1, %3              ; cmp >= src?
+%endmacro
+
+; %1 = abs(%2-%3) <= %4
+%macro ABSSUB_CMP 6-7 [pb_80]; dst, src1, src2, cmp, tmp1, tmp2, [pb_80]
+    ABSSUB              %1, %2, %3, %6      ; dst = abs(src1-src2)
+    CMP_LTE             %1, %4, %6, %7      ; dst <= cmp
+%endmacro
+
+%macro MASK_APPLY 4 ; %1=new_data/dst %2=old_data %3=mask %4=tmp
+    pand                %1, %3              ; new_data = new_data & mask
+    pandn               %4, %3, %2          ; tmp = ~mask & new_data
+    por                 %1, %4
+%endmacro
+
+%macro FILTER_SUBx2_ADDx2 8 ; %1=dst %2=h/l %3=cache %4=sub1 %5=sub2 %6=add1 %7=add2 %8=rshift
+    punpck%2bw          %3, %4, m0
+    psubw               %1, %3
+    punpck%2bw          %3, %5, m0
+    psubw               %1, %3
+    punpck%2bw          %3, %6, m0
+    paddw               %1, %3
+    punpck%2bw          %3, %7, m0
+    paddw               %1, %3
+    mova                %3, %1
+    psraw               %1, %8
+%endmacro
+
+%macro FILTER_INIT 7 ; tmp1, tmp2, cacheL, cacheH, dstp, filterid
+    FILTER%6_INIT       %1, l, %3
+    FILTER%6_INIT       %2, h, %4
+    packuswb            %1, %2
+    MASK_APPLY          %1, %5, %7, %2
+    movu                %5, %1
+%endmacro
+
+%macro FILTER_UPDATE 11 ; tmp1, tmp2, cacheL, cacheH, dstp, -, -, +, +, rshift
+    FILTER_SUBx2_ADDx2  %1, l, %3, %6, %7, %8, %9, %10
+    FILTER_SUBx2_ADDx2  %2, h, %4, %6, %7, %8, %9, %10
+    packuswb            %1, %2
+    MASK_APPLY          %1, %5, %11, %2
+    movu                %5, %1
+%endmacro
+
+%macro SRSHIFT3B_2X 4 ; reg1, reg2, [pb_10], tmp
+    mova                %4, [pb_f8]
+    pand                %1, %4
+    pand                %2, %4
+    psrlq               %1, 3
+    psrlq               %2, 3
+    pxor                %1, %3
+    pxor                %2, %3
+    psubb               %1, %3
+    psubb               %2, %3
+%endmacro
+
+%macro EXTRACT_POS_NEG 3 ; i8, neg, pos
+    pxor                %3, %3
+    pxor                %2, %2
+    pcmpgtb             %3, %1                          ; i8 < 0 mask
+    psubb               %2, %1                          ; neg values (only the originally - will be kept)
+    pand                %2, %3                          ; negative values of i8 (but stored as +)
+    pandn               %3, %1                          ; positive values of i8
+%endmacro
+
+; clip_u8(u8 + i8)
+%macro SIGN_ADD 5 ; dst, u8, i8, tmp1, tmp2
+    EXTRACT_POS_NEG     %3, %4, %5
+    psubusb             %1, %2, %4                      ; sub the negatives
+    paddusb             %1, %5                          ; add the positives
+%endmacro
+
+; clip_u8(u8 - i8)
+%macro SIGN_SUB 5 ; dst, u8, i8, tmp1, tmp2
+    EXTRACT_POS_NEG     %3, %4, %5
+    psubusb             %1, %2, %5                      ; sub the positives
+    paddusb             %1, %4                          ; add the negatives
+%endmacro
+
+%macro FILTER6_INIT 3 ; %1=dst %2=h/l %3=cache
+    punpck%2bw          %3, m14, m0                     ; p3: B->W
+    mova                %1, %3                          ; p3
+    paddw               %1, %3                          ; p3*2
+    paddw               %1, %3                          ; p3*3
+    punpck%2bw          %3, m15, m0                     ; p2: B->W
+    paddw               %1, %3                          ; p3*3 + p2
+    paddw               %1, %3                          ; p3*3 + p2*2
+    punpck%2bw          %3, m10, m0                     ; p1: B->W
+    paddw               %1, %3                          ; p3*3 + p2*2 + p1
+    punpck%2bw          %3, m11, m0                     ; p0: B->W
+    paddw               %1, %3                          ; p3*3 + p2*2 + p1 + p0
+    punpck%2bw          %3, m12, m0                     ; q0: B->W
+    paddw               %1, %3                          ; p3*3 + p2*2 + p1 + p0 + q0
+    paddw               %1, [pw_4]                      ; p3*3 + p2*2 + p1 + p0 + q0 + 4
+    mova                %3, %1                          ; base for next line (cache)
+    psraw               %1, 3                           ; (p3*3 + p2*2 + p1 + p0 + q0 + 4) >> 3
+%endmacro
+
+%macro FILTER14_INIT 3 ; %1=dst %2=h/l %3=cache
+    punpck%2bw          %1, m2, m0                      ; p7: B->W
+    mova                %3, %1
+    psllw               %1, 3                           ; p7*8
+    psubw               %1, %3                          ; p7*7
+    punpck%2bw          %3, m3, m0                      ; p6: B->W
+    paddw               %1, %3                          ; p7*7 + p6
+    paddw               %1, %3                          ; p7*7 + p6*2
+    punpck%2bw          %3, m8, m0                      ; p5: B->W
+    paddw               %1, %3                          ; p7*7 + p6*2 + p5
+    punpck%2bw          %3, m9, m0                      ; p4: B->W
+    paddw               %1, %3                          ; p7*7 + p6*2 + p5 + p4
+    punpck%2bw          %3, m14, m0                     ; p3: B->W
+    paddw               %1, %3                          ; p7*7 + p6*2 + p5 + p4 + p3
+    punpck%2bw          %3, m15, m0                     ; p2: B->W
+    paddw               %1, %3                          ; p7*7 + p6*2 + p5 + .. + p2
+    punpck%2bw          %3, m10, m0                     ; p1: B->W
+    paddw               %1, %3                          ; p7*7 + p6*2 + p5 + .. + p1
+    punpck%2bw          %3, m11, m0                     ; p0: B->W
+    paddw               %1, %3                          ; p7*7 + p6*2 + p5 + .. + p0
+    punpck%2bw          %3, m12, m0                     ; q0: B->W
+    paddw               %1, %3                          ; p7*7 + p6*2 + p5 + .. + p0 + q0
+    paddw               %1, [pw_8]                      ; p7*7 + p6*2 + p5 + .. + p0 + q0 + 8
+    mova                %3, %1                          ; base for next line (cache)
+    psraw               %1, 4                           ; (p7*7 + p6*2 + p5 + .. + p0 + q0 + 8) >> 4
+%endmacro
+
+INIT_XMM ssse3
+cglobal vp9_loop_filter_v_16_16, 5,8,15, dst, stride, E, I, H, mstride, dst1, dst2
+    lea mstrideq, [strideq]
+    neg mstrideq
+
+    ; calc fm mask
+    pxor                m0, m0
+    movd                m2, Id
+    movd                m3, Ed
+    pshufb              m2, m0                          ; I I I I ...
+    pshufb              m3, m0                          ; E E E E ...
+    mova                m0, [pb_80]
+    pxor                m2, m0
+    pxor                m3, m0
+    lea              dst1q, [dstq  + 2*mstrideq]        ; dst1 = &dst[stride * -2]
+    lea              dst2q, [dstq  + 2* strideq]        ; dst2 = &dst[stride * +2]
+    movu                m8, [dstq  + 4*mstrideq]        ; m8  = dst[stride * -4] (p3)
+    movu                m9, [dst1q + 1*mstrideq]        ; m9  = dst[stride * -3] (p2)
+    movu               m10, [dstq  + 2*mstrideq]        ; m10 = dst[stride * -2] (p1)
+    movu               m11, [dstq  + 1*mstrideq]        ; m11 = dst[stride * -1] (p0)
+    movu               m12, [dstq              ]        ; m12 = dst[stride * +0] (q0)
+    movu               m13, [dstq  + 1* strideq]        ; m13 = dst[stride * +1] (q1)
+    movu               m14, [dstq  + 2* strideq]        ; m14 = dst[stride * +2] (q2)
+    movu               m15, [dst2q + 1* strideq]        ; m15 = dst[stride * +3] (q3)
+    ABSSUB_CMP          m5,  m8,  m9, m2, m6, m7, m0    ; m5 = abs(p3-p2) <= I
+    ABSSUB_CMP          m1,  m9, m10, m2, m6, m7, m0    ; m1 = abs(p2-p1) <= I
+    pand                m5, m1
+    ABSSUB_CMP          m1, m10, m11, m2, m6, m7, m0    ; m1 = abs(p1-p0) <= I
+    pand                m5, m1
+    ABSSUB_CMP          m1, m12, m13, m2, m6, m7, m0    ; m1 = abs(q1-q0) <= I
+    pand                m5, m1
+    ABSSUB_CMP          m1, m13, m14, m2, m6, m7, m0    ; m1 = abs(q2-q1) <= I
+    pand                m5, m1
+    ABSSUB_CMP          m1, m14, m15, m2, m6, m7, m0    ; m1 = abs(q3-q2) <= I
+    pand                m5, m1
+    ABSSUB              m1, m11, m12, m7                ; abs(p0-q0)
+    paddusb             m1, m1                          ; abs(p0-q0) * 2
+    ABSSUB              m2, m10, m13, m7                ; abs(p1-q1)
+    pand                m2, [pb_fe]                     ; drop lsb so shift can work
+    psrlq               m2, 1                           ; abs(p1-q1)/2
+    paddusb             m1, m2                          ; abs(p0-q0)*2 + abs(p1-q1)/2
+    pxor                m1, m0
+    pcmpgtb             m4, m3, m1                      ; E > X?
+    pcmpeqb             m3, m1                          ; E == X?
+    por                 m3, m4                          ; E >= X?
+    pand                m3, m5                          ; fm final value
+
+    ; (m3: fm, m8..15: p3 p2 p1 p0 q0 q1 q2 q3)
+    ; calc flat8in and hev masks
+    mova                m6, [pb_81]                     ; [1 1 1 1 ...] ^ 0x80
+    ABSSUB_CMP          m2, m8, m11, m6, m4, m5         ; abs(p3 - p0) <= 1
+    mova                m8, [pb_80]
+    ABSSUB_CMP          m1, m9, m11, m6, m4, m5, m8     ; abs(p2 - p0) <= 1
+    pand                m2, m1
+    ABSSUB              m4, m10, m11, m5                ; abs(p1 - p0)
+    pxor                m0, m0
+    movd                m7, Hd
+    pshufb              m7, m0                          ; H H H H ...
+    pxor                m7, m8
+    pxor                m4, m8
+    pcmpgtb             m0, m4, m7                      ; abs(p1 - p0) > H (1/2 hev condition)
+    pxor                m4, m8
+    mova                m1, m4
+    CMP_LTE             m1, m6, m5, m8                  ; abs(p1 - p0) <= 1
+    pand                m2, m1                          ; (flat8in)
+    ABSSUB              m4, m13, m12, m1                ; abs(q1 - q0)
+    pxor                m4, m8
+    pcmpgtb             m5, m4, m7                      ; abs(q1 - q0) > H (2/2 hev condition)
+    pxor                m4, m8
+    por                 m0, m5                          ; hev final value
+    mova                m1, m4
+    CMP_LTE             m1, m6, m5, m8                  ; abs(q1 - q0) <= 1
+    pand                m2, m1                          ; (flat8in)
+    ABSSUB_CMP          m1, m14, m12, m6, m4, m5, m8    ; abs(q2 - q0) <= 1
+    pand                m2, m1
+    ABSSUB_CMP          m1, m15, m12, m6, m4, m5, m8    ; abs(q3 - q0) <= 1
+    pand                m2, m1                          ; flat8in final value
+
+    ; (m0: hev, m2: flat8in, m3: fm, m6: pb_81, m9..15: p2 p1 p0 q0 q1 q2 q3)
+    ; calc flat8out mask
+    lea                 dst2q, [dstq  + 8*mstrideq]     ; dst2 = &dst[stride * -8] (p7)
+    lea                 dst1q, [dst2q + 1*strideq]      ; dst1 = &dst[stride * -7] (p6)
+    movu                m8, [dst2q]                     ; m8 = p7
+    movu                m9, [dst1q]                     ; m9 = p6
+    ABSSUB_CMP          m1, m8, m11, m6, m4, m5         ; abs(p7 - p0) <= 1
+    ABSSUB_CMP          m7, m9, m11, m6, m4, m5         ; abs(p6 - p0) <= 1
+    pand                m1, m7
+    movu                m8, [dst1q + 1*strideq]         ; m8 = dst[stride * -6] (p5)
+    movu                m9, [dst1q + 2*strideq]         ; m9 = dst[stride * -5] (p4)
+    ABSSUB_CMP          m7, m8, m11, m6, m4, m5         ; abs(p5 - p0) <= 1
+    pand                m1, m7
+    ABSSUB_CMP          m7, m9, m11, m6, m4, m5         ; abs(p4 - p0) <= 1
+    pand                m1, m7
+    lea                 dst2q, [dstq  + 4*strideq]      ; dst2 = &dst[stride * +4] (q4)
+    lea                 dst1q, [dst2q + 1*strideq]      ; dst1 = &dst[stride * +5] (q5)
+    movu                m14, [dst2q]                    ; m14 = q4
+    movu                m15, [dst1q]                    ; m15 = q5
+    ABSSUB_CMP          m7, m14, m12, m6, m4, m5        ; abs(q4 - q0) <= 1
+    pand                m1, m7
+    ABSSUB_CMP          m7, m15, m12, m6, m4, m5        ; abs(q5 - q0) <= 1
+    pand                m1, m7
+    movu                m14, [dst1q + 1*strideq]        ; m14 = dst[stride * +6] (q6)
+    movu                m15, [dst1q + 2*strideq]        ; m15 = dst[stride * +7] (q7)
+    ABSSUB_CMP          m7, m14, m12, m6, m4, m5        ; abs(q4 - q0) <= 1
+    pand                m1, m7
+    ABSSUB_CMP          m7, m15, m12, m6, m4, m5        ; abs(q5 - q0) <= 1
+    pand                m1, m7                          ; flat8out final value
+
+    ; if (fm) {
+    ;     if (out && in) filter_14()
+    ;     else if (in)   filter_6()
+    ;     else if (hev)  filter_2()
+    ;     else           filter_4()
+    ; }
+    ;
+    ; f14:                                                                            fm &  out &  in
+    ; f6:  fm & ~f14 & in        => fm & ~(out & in) & in                          => fm & ~out &  in
+    ; f2:  fm & ~f14 & ~f6 & hev => fm & ~(out & in) & ~(~out & in) & hev          => fm &  ~in &  hev
+    ; f4:  fm & ~f14 & ~f6 & ~f2 => fm & ~(out & in) & ~(~out & in) & ~(~in & hev) => fm &  ~in & ~hev
+
+    ; (m0: hev, m1: flat8out, m2: flat8in, m3: fm, m8..15: p5 p4 p1 p0 q0 q1 q6 q7)
+    ; filter2()
+    mova                m6, [pb_80]
+    pxor                m15, m12, m6                    ; q0 ^ 0x80
+    pxor                m14, m11, m6                    ; p0 ^ 0x80
+    psubsb              m15, m14                        ; (signed) q0 - p0
+    pxor                m4, m10, m6                     ; p1 ^ 0x80
+    pxor                m5, m13, m6                     ; q1 ^ 0x80
+    psubsb              m4, m5                          ; (signed) p1 - q1
+    paddsb              m4, m15                         ;   (q0 - p0) + (p1 - q1)
+    paddsb              m4, m15                         ; 2*(q0 - p0) + (p1 - q1)
+    paddsb              m4, m15                         ; 3*(q0 - p0) + (p1 - q1)
+    paddsb              m6, m4, [pb_4]                  ; m6: f1 = clip(f + 4, 127)
+    paddsb              m4, [pb_3]                      ; m4: f2 = clip(f + 3, 127)
+    mova                m14, [pb_10]                    ; will be reused in filter4()
+    SRSHIFT3B_2X        m6, m4, m14, m7                 ; f1 and f2 sign byte shift by 3
+    SIGN_SUB            m7, m12, m6, m8, m9             ; m7 = q0 - f1
+    SIGN_ADD            m8, m11, m4, m5, m9             ; m8 = p0 + f2
+    pandn               m6, m2, m3                      ;  ~mask(in) & mask(fm)
+    pand                m6, m0                          ; (~mask(in) & mask(fm)) & mask(hev)
+    MASK_APPLY          m7, m12, m6, m5                 ; m7 = filter2(q0) & mask / we write it in filter4()
+    MASK_APPLY          m8, m11, m6, m5                 ; m8 = filter2(p0) & mask / we write it in filter4()
+
+    ; (m0: hev, m1: flat8out, m2: flat8in, m3: fm, m7..m8: q0' p0', m10..13: p1 p0 q0 q1, m14: pb_10, m15: q0-p0 )
+    ; filter4()
+    mova                m4, m15
+    paddsb              m15, m4                         ; 2 * (q0 - p0)
+    paddsb              m15, m4                         ; 3 * (q0 - p0)
+    paddsb              m6, m15, [pb_4]                 ; m6:  f1 = clip(f + 4, 127)
+    paddsb              m15, [pb_3]                     ; m15: f2 = clip(f + 3, 127)
+    SRSHIFT3B_2X        m6, m15, m14, m9                ; f1 and f2 sign byte shift by 3
+    pandn               m5, m2, m3                      ;               ~mask(in) & mask(fm)
+    pandn               m0, m5                          ; ~mask(hev) & (~mask(in) & mask(fm))
+    SIGN_SUB            m9, m12, m6, m4, m14            ; q0 - f1
+    MASK_APPLY          m9, m7, m0, m5                  ; m9 = filter4(q0) & mask
+    SIGN_ADD            m7, m11, m15, m4, m14           ; p0 + f2
+    MASK_APPLY          m7, m8, m0, m5                  ; m7 = filter4(p0) & mask
+    movu                [dstq + 1*mstrideq], m7         ; update p0
+    movu                [dstq             ], m9         ; update q0
+    paddb               m6, [pb_80]                     ;
+    pxor                m8, m8                          ;   f=(f1+1)>>1
+    pavgb               m6, m8                          ;
+    psubb               m6, [pb_40]                     ;
+    SIGN_ADD            m7, m10, m6, m8, m9             ; p1 + f
+    SIGN_SUB            m4, m13, m6, m8, m9             ; q1 - f
+    MASK_APPLY          m7, m10, m0, m14                ; m7 = filter4(p1)
+    MASK_APPLY          m4, m13, m0, m14                ; m4 = filter4(q1)
+    movu                [dstq + 2*mstrideq], m7         ; update p1
+    movu                [dstq + 1* strideq], m4         ; update q1
+
+    ; (m1: flat8out, m2: flat8in, m3: fm, m10..13: p1 p0 q0 q1)
+    ; filter6()
+    pand                m2, m3                          ;               mask(fm) & mask(in)
+    pandn               m3, m1, m2                      ; ~mask(out) & (mask(fm) & mask(in))
+    lea              dst1q, [dstq + 2*strideq]          ; dst1 = &dst[stride * +2] (q2)
+    movu                m8, [dst1q]                     ; m8 = q2
+    movu                m9, [dst1q + 1*strideq]         ; m9 = q3
+    lea              dst1q, [dstq + 4*mstrideq]         ; dst1 = &dst[stride * -4] (p3)
+    lea              dst2q, [dst1q + 1*strideq]         ; dst2 = &dst[stride * -3] (p2)
+    movu               m14, [dst1q]                     ; m14 = p3
+    movu               m15, [dst2q]                     ; m15 = p2
+    pxor                m0, m0
+    FILTER_INIT         m4, m5, m6, m7, [dst2q            ], 6,                     m3  ; [p2]
+    FILTER_UPDATE       m6, m7, m4, m5, [dst2q + 1*strideq], m14, m15, m10, m13, 3, m3  ; [p1] -p3 -p2 +p1 +q1
+    FILTER_UPDATE       m4, m5, m6, m7, [dst2q + 2*strideq], m14, m10, m11,  m8, 3, m3  ; [p0] -p3 -p1 +p0 +q2
+    FILTER_UPDATE       m6, m7, m4, m5, [dstq             ], m14, m11, m12,  m9, 3, m3  ; [q0] -p3 -p0 +q0 +q3
+    FILTER_UPDATE       m4, m5, m6, m7, [dstq  + 1*strideq], m15, m12, m13,  m9, 3, m3  ; [q1] -p2 -q0 +q1 +q3
+    FILTER_UPDATE       m6, m7, m4, m5, [dstq  + 2*strideq], m10, m13,  m8,  m9, 3, m3  ; [q2] -p1 -q1 +q2 +q3
+
+    ; (m0: 0, m1: flat8out, m2: fm & flat8in, m8..15: q2 q3 p1 p0 q0 q1 p3 p2)
+    ; filter14()
+    ;
+    ;                            m2  m3  m8  m9 m14 m15 m10 m11 m12 m13
+    ;
+    ;                                    q2  q3  p3  p2  p1  p0  q0  q1
+    ; p6  -7                     p7  p6  p5  p4   .   .   .   .   .
+    ; p5  -6  -p7 -p6 +p5 +q1     .   .   .                           .
+    ; p4  -5  -p7 -p5 +p4 +q2     .       .   .                      q2
+    ; p3  -4  -p7 -p4 +p3 +q3     .           .   .                  q3
+    ; p2  -3  -p7 -p3 +p2 +q4     .               .   .              q4
+    ; p1  -2  -p7 -p2 +p1 +q5     .                   .   .          q5
+    ; p0  -1  -p7 -p1 +p0 +q6     .                       .   .      q6
+    ; q0  +0  -p7 -p0 +q0 +q7     .                           .   .  q7
+    ; q1  +1  -p6 -q0 +q1 +q7    q1   .                           .   .
+    ; q2  +2  -p5 -q1 +q2 +q7     .  q2   .                           .
+    ; q3  +3  -p4 -q2 +q3 +q7         .  q3   .                       .
+    ; q4  +4  -p3 -q3 +q4 +q7             .  q4   .                   .
+    ; q5  +5  -p2 -q4 +q5 +q7                 .  q5   .               .
+    ; q6  +6  -p1 -q5 +q6 +q7                     .  q6   .           .
+
+    pand            m1, m2                                                          ; mask(out) & (mask(fm) & mask(in))
+    lea             dst1q, [dstq  + 8*mstrideq]                                     ; dst1 = &dst[stride * -8] (p7)
+    lea             dst2q, [dst1q + 1* strideq]                                     ; dst2 = &dst[stride * -7] (p6)
+    movu            m2, [dst1q]                                                     ; m2 = p7
+    movu            m3, [dst2q]                                                     ; m3 = p6
+    movu            m8, [dst1q + 2*strideq]                                         ; m8 = p5 (dst[stride * -6])
+    movu            m9, [dst2q + 2*strideq]                                         ; m9 = p4 (dst[stride * -5])
+    FILTER_INIT     m4, m5, m6, m7, [dst2q], 14, m1                                 ; [p6]
+    FILTER_UPDATE   m6, m7, m4, m5, [dst2q + 1*strideq],  m2,  m3,  m8, m13, 4, m1  ; [p5] -p7 -p6 +p5 +q1
+    lea             dst1q, [dstq + 1*strideq]                                       ; dst1 = &dst[stride * +1] (q1)
+    movu            m13, [dst1q + 1*strideq]                                        ; m13=dst[stride * +2] (q2)
+    FILTER_UPDATE   m4, m5, m6, m7, [dst2q + 2*strideq],  m2,  m8,  m9, m13, 4, m1  ; [p4] -p7 -p5 +p4 +q2
+    lea             dst2q, [dst2q + 2*strideq]
+    movu            m13, [dst1q + 2*strideq]                                        ; m13=dst[stride * +3] (q3)
+    FILTER_UPDATE   m6, m7, m4, m5, [dst2q + 1*strideq],  m2,  m9, m14, m13, 4, m1  ; [p3] -p7 -p4 +p3 +q3
+    movu            m13, [dstq  + 4*strideq]                                        ; m13=dst[stride * +4] (q4)
+    FILTER_UPDATE   m4, m5, m6, m7, [dst2q + 2*strideq],  m2, m14, m15, m13, 4, m1  ; [p2] -p7 -p3 +p2 +q4
+    lea             dst2q, [dst2q + 2*strideq]
+    movu            m13, [dst1q + 4*strideq]                                        ; m13=dst[stride * +5] (q5)
+    FILTER_UPDATE   m6, m7, m4, m5, [dst2q + 1*strideq],  m2, m15, m10, m13, 4, m1  ; [p1] -p7 -p2 +p1 +q5
+    lea             dst1q, [dst1q + 4*strideq]                                      ; dst1 = &dst[stride * +5] (q5)
+    movu            m13, [dst1q + 1*strideq]                                        ; m13=dst[stride * +6] (q6)
+    FILTER_UPDATE   m4, m5, m6, m7, [dst2q + 2*strideq],  m2, m10, m11, m13, 4, m1  ; [p0] -p7 -p1 +p0 +q6
+    lea             dst2q, [dst2q + 2*strideq]
+    movu            m13, [dst1q + 2*strideq]                                        ; m13=dst[stride * +7] (q7)
+    FILTER_UPDATE   m6, m7, m4, m5, [dst2q + 1*strideq],  m2, m11, m12, m13, 4, m1  ; [q0] -p7 -p0 +q0 +q7
+    movu            m2, [dst2q + 2*strideq]                                         ; m2=dst[stride * +1] (q1)
+    FILTER_UPDATE   m4, m5, m6, m7, [dst2q + 2*strideq],  m3, m12,  m2, m13, 4, m1  ; [q1] -p6 -q0 +q1 +q7
+    lea             dst2q, [dst2q + 2*strideq]
+    movu            m3, [dst2q + 1*strideq]                                         ; m3=dst[stride * +2] (q2)
+    FILTER_UPDATE   m6, m7, m4, m5, [dst2q + 1*strideq],  m8,  m2,  m3, m13, 4, m1  ; [q2] -p5 -q1 +q2 +q7
+    movu            m8, [dst2q + 2*strideq]                                         ; m8=dst[stride * +3] (q3)
+    FILTER_UPDATE   m4, m5, m6, m7, [dst2q + 2*strideq],  m9,  m3,  m8, m13, 4, m1  ; [q3] -p4 -q2 +q3 +q7
+    lea             dst2q, [dst2q + 2*strideq]
+    movu            m9, [dst2q + 1*strideq]                                         ; m9=dst[stride * +4] (q4)
+    FILTER_UPDATE   m6, m7, m4, m5, [dst2q + 1*strideq], m14,  m8,  m9, m13, 4, m1  ; [q4] -p3 -q3 +q4 +q7
+    movu            m14, [dst2q + 2*strideq]                                        ; m14=dst[stride * +5] (q5)
+    FILTER_UPDATE   m4, m5, m6, m7, [dst2q + 2*strideq], m15,  m9, m14, m13, 4, m1  ; [q5] -p2 -q4 +q5 +q7
+    lea             dst2q, [dst2q + 2*strideq]
+    movu            m15, [dst2q + 1*strideq]                                        ; m15=dst[stride * +6] (q6)
+    FILTER_UPDATE   m6, m7, m4, m5, [dst2q + 1*strideq], m10, m14, m15, m13, 4, m1  ; [q6] -p1 -q5 +q6 +q7
+
+    RET
+
+%endif ; x86-64
-- 
1.8.5.2



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