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6148 serge 1 
;******************************************************************************
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;* MMX-optimized H.263 loop filter
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;* Copyright (c) 2003-2013 Michael Niedermayer
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;* Copyright (c) 2013 Daniel Kang
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;*
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;* This file is part of FFmpeg.
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;*
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;* FFmpeg is free software; you can redistribute it and/or
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;* modify it under the terms of the GNU Lesser General Public
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;* License as published by the Free Software Foundation; either
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;* version 2.1 of the License, or (at your option) any later version.
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;*
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;* FFmpeg is distributed in the hope that it will be useful,
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;* but WITHOUT ANY WARRANTY; without even the implied warranty of
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;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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;* Lesser General Public License for more details.
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;*
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;* You should have received a copy of the GNU Lesser General Public
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;* License along with FFmpeg; if not, write to the Free Software
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;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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;******************************************************************************
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%include "libavutil/x86/x86util.asm"
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SECTION_RODATA
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cextern pb_FC
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cextern h263_loop_filter_strength
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SECTION_TEXT
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%macro H263_LOOP_FILTER 5
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    pxor         m7, m7
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    mova         m0, [%1]
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    mova         m1, [%1]
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    mova         m2, [%4]
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    mova         m3, [%4]
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    punpcklbw    m0, m7
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    punpckhbw    m1, m7
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    punpcklbw    m2, m7
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    punpckhbw    m3, m7
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    psubw        m0, m2
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    psubw        m1, m3
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    mova         m2, [%2]
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    mova         m3, [%2]
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    mova         m4, [%3]
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    mova         m5, [%3]
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    punpcklbw    m2, m7
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    punpckhbw    m3, m7
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    punpcklbw    m4, m7
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    punpckhbw    m5, m7
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    psubw        m4, m2
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    psubw        m5, m3
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    psllw        m4, 2
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    psllw        m5, 2
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    paddw        m4, m0
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    paddw        m5, m1
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    pxor         m6, m6
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    pcmpgtw      m6, m4
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    pcmpgtw      m7, m5
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    pxor         m4, m6
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    pxor         m5, m7
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    psubw        m4, m6
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    psubw        m5, m7
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    psrlw        m4, 3
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    psrlw        m5, 3
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    packuswb     m4, m5
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    packsswb     m6, m7
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    pxor         m7, m7
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    movd         m2, %5
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    punpcklbw    m2, m2
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    punpcklbw    m2, m2
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    punpcklbw    m2, m2
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    psubusb      m2, m4
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    mova         m3, m2
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    psubusb      m3, m4
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    psubb        m2, m3
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    mova         m3, [%2]
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    mova         m4, [%3]
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    pxor         m3, m6
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    pxor         m4, m6
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    paddusb      m3, m2
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    psubusb      m4, m2
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    pxor         m3, m6
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    pxor         m4, m6
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    paddusb      m2, m2
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    packsswb     m0, m1
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    pcmpgtb      m7, m0
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    pxor         m0, m7
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    psubb        m0, m7
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    mova         m1, m0
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    psubusb      m0, m2
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    psubb        m1, m0
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    pand         m1, [pb_FC]
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    psrlw        m1, 2
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    pxor         m1, m7
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    psubb        m1, m7
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    mova         m5, [%1]
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    mova         m6, [%4]
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    psubb        m5, m1
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    paddb        m6, m1
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%endmacro
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INIT_MMX mmx
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; void h263_v_loop_filter(uint8_t *src, int stride, int qscale)
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cglobal h263_v_loop_filter, 3,5
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    movsxdifnidn r1, r1d
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    movsxdifnidn r2, r2d
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    lea          r4, [h263_loop_filter_strength]
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    movzx       r3d, BYTE [r4+r2]
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    movsx        r2, r3b
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    shl          r2, 1
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    mov          r3, r0
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    sub          r3, r1
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    mov          r4, r3
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    sub          r4, r1
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    H263_LOOP_FILTER r4, r3, r0, r0+r1, r2d
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    mova       [r3], m3
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    mova       [r0], m4
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    mova       [r4], m5
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    mova    [r0+r1], m6
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    RET
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%macro TRANSPOSE4X4 2
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    movd      m0, [%1]
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    movd      m1, [%1+r1]
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    movd      m2, [%1+r1*2]
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    movd      m3, [%1+r3]
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    punpcklbw m0, m1
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    punpcklbw m2, m3
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    mova      m1, m0
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    punpcklwd m0, m2
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    punpckhwd m1, m2
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    movd [%2+ 0], m0
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    punpckhdq m0, m0
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    movd [%2+ 8], m0
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    movd [%2+16], m1
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    punpckhdq m1, m1
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    movd [%2+24], m1
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%endmacro
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; void h263_h_loop_filter(uint8_t *src, int stride, int qscale)
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INIT_MMX mmx
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cglobal h263_h_loop_filter, 3,5,0,32
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    movsxdifnidn r1, r1d
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    movsxdifnidn r2, r2d
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    lea          r4, [h263_loop_filter_strength]
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    movzx       r3d, BYTE [r4+r2]
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    movsx        r2, r3b
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    shl          r2, 1
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    sub          r0, 2
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    lea          r3, [r1*3]
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    TRANSPOSE4X4 r0, rsp
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    lea          r4, [r0+r1*4]
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    TRANSPOSE4X4 r4, rsp+4
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    H263_LOOP_FILTER rsp, rsp+8, rsp+16, rsp+24, r2d
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    mova         m1, m5
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    mova         m0, m4
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    punpcklbw    m5, m3
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    punpcklbw    m4, m6
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    punpckhbw    m1, m3
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    punpckhbw    m0, m6
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    mova         m3, m5
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    mova         m6, m1
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    punpcklwd    m5, m4
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    punpcklwd    m1, m0
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    punpckhwd    m3, m4
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    punpckhwd    m6, m0
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    movd       [r0], m5
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    punpckhdq    m5, m5
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    movd  [r0+r1*1], m5
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    movd  [r0+r1*2], m3
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    punpckhdq    m3, m3
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    movd    [r0+r3], m3
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    movd       [r4], m1
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    punpckhdq    m1, m1
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    movd  [r4+r1*1], m1
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    movd  [r4+r1*2], m6
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    punpckhdq    m6, m6
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    movd    [r4+r3], m6
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    RET