libavcodec/x86/h263_loopfilter.asm

   1 ;******************************************************************************
   2 ;* MMX-optimized H.263 loop filter
   3 ;* Copyright (c) 2003-2013 Michael Niedermayer
   4 ;* Copyright (c) 2013 Daniel Kang
   5 ;*
   6 ;* This file is part of FFmpeg.
   7 ;*
   8 ;* FFmpeg is free software; you can redistribute it and/or
   9 ;* modify it under the terms of the GNU Lesser General Public
  10 ;* License as published by the Free Software Foundation; either
  11 ;* version 2.1 of the License, or (at your option) any later version.
  12 ;*
  13 ;* FFmpeg is distributed in the hope that it will be useful,
  14 ;* but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 ;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16 ;* Lesser General Public License for more details.
  17 ;*
  18 ;* You should have received a copy of the GNU Lesser General Public
  19 ;* License along with FFmpeg; if not, write to the Free Software
  20 ;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21 ;******************************************************************************
  22
  23 %include "libavutil/x86/x86util.asm"
  24
  25 SECTION_RODATA
  26 cextern pb_FC
  27 cextern h263_loop_filter_strength
  28
  29 SECTION .text
  30
  31 %macro H263_LOOP_FILTER 5
  32     pxor         m7, m7
  33     mova         m0, [%1]
  34     mova         m1, [%1]
  35     mova         m2, [%4]
  36     mova         m3, [%4]
  37     punpcklbw    m0, m7
  38     punpckhbw    m1, m7
  39     punpcklbw    m2, m7
  40     punpckhbw    m3, m7
  41     psubw        m0, m2
  42     psubw        m1, m3
  43     mova         m2, [%2]
  44     mova         m3, [%2]
  45     mova         m4, [%3]
  46     mova         m5, [%3]
  47     punpcklbw    m2, m7
  48     punpckhbw    m3, m7
  49     punpcklbw    m4, m7
  50     punpckhbw    m5, m7
  51     psubw        m4, m2
  52     psubw        m5, m3
  53     psllw        m4, 2
  54     psllw        m5, 2
  55     paddw        m4, m0
  56     paddw        m5, m1
  57     pxor         m6, m6
  58     pcmpgtw      m6, m4
  59     pcmpgtw      m7, m5
  60     pxor         m4, m6
  61     pxor         m5, m7
  62     psubw        m4, m6
  63     psubw        m5, m7
  64     psrlw        m4, 3
  65     psrlw        m5, 3
  66     packuswb     m4, m5
  67     packsswb     m6, m7
  68     pxor         m7, m7
  69     movd         m2, %5
  70     punpcklbw    m2, m2
  71     punpcklbw    m2, m2
  72     punpcklbw    m2, m2
  73     psubusb      m2, m4
  74     mova         m3, m2
  75     psubusb      m3, m4
  76     psubb        m2, m3
  77     mova         m3, [%2]
  78     mova         m4, [%3]
  79     pxor         m3, m6
  80     pxor         m4, m6
  81     paddusb      m3, m2
  82     psubusb      m4, m2
  83     pxor         m3, m6
  84     pxor         m4, m6
  85     paddusb      m2, m2
  86     packsswb     m0, m1
  87     pcmpgtb      m7, m0
  88     pxor         m0, m7
  89     psubb        m0, m7
  90     mova         m1, m0
  91     psubusb      m0, m2
  92     psubb        m1, m0
  93     pand         m1, [pb_FC]
  94     psrlw        m1, 2
  95     pxor         m1, m7
  96     psubb        m1, m7
  97     mova         m5, [%1]
  98     mova         m6, [%4]
  99     psubb        m5, m1
 100     paddb        m6, m1
 101 %endmacro
 102
 103 INIT_MMX mmx
 104 ; void ff_h263_v_loop_filter_mmx(uint8_t *src, int stride, int qscale)
 105 cglobal h263_v_loop_filter, 3,5
 106     movsxdifnidn r1, r1d
 107     movsxdifnidn r2, r2d
 108
 109     lea          r4, [h263_loop_filter_strength]
 110     movzx       r3d, BYTE [r4+r2]
 111     movsx        r2, r3b
 112     shl          r2, 1
 113
 114     mov          r3, r0
 115     sub          r3, r1
 116     mov          r4, r3
 117     sub          r4, r1
 118     H263_LOOP_FILTER r4, r3, r0, r0+r1, r2d
 119
 120     mova       [r3], m3
 121     mova       [r0], m4
 122     mova       [r4], m5
 123     mova    [r0+r1], m6
 124     RET
 125
 126 %macro TRANSPOSE4X4 2
 127     movd      m0, [%1]
 128     movd      m1, [%1+r1]
 129     movd      m2, [%1+r1*2]
 130     movd      m3, [%1+r3]
 131     punpcklbw m0, m1
 132     punpcklbw m2, m3
 133     mova      m1, m0
 134     punpcklwd m0, m2
 135     punpckhwd m1, m2
 136     movd [%2+ 0], m0
 137     punpckhdq m0, m0
 138     movd [%2+ 8], m0
 139     movd [%2+16], m1
 140     punpckhdq m1, m1
 141     movd [%2+24], m1
 142 %endmacro
 143
 144
 145 ; void ff_h263_h_loop_filter_mmx(uint8_t *src, int stride, int qscale)
 146 INIT_MMX mmx
 147 cglobal h263_h_loop_filter, 3,5,0,32
 148     movsxdifnidn r1, r1d
 149     movsxdifnidn r2, r2d
 150
 151     lea          r4, [h263_loop_filter_strength]
 152     movzx       r3d, BYTE [r4+r2]
 153     movsx        r2, r3b
 154     shl          r2, 1
 155
 156     sub          r0, 2
 157     lea          r3, [r1*3]
 158
 159     TRANSPOSE4X4 r0, rsp
 160     lea          r4, [r0+r1*4]
 161     TRANSPOSE4X4 r4, rsp+4
 162
 163     H263_LOOP_FILTER rsp, rsp+8, rsp+16, rsp+24, r2d
 164
 165     mova         m1, m5
 166     mova         m0, m4
 167     punpcklbw    m5, m3
 168     punpcklbw    m4, m6
 169     punpckhbw    m1, m3
 170     punpckhbw    m0, m6
 171     mova         m3, m5
 172     mova         m6, m1
 173     punpcklwd    m5, m4
 174     punpcklwd    m1, m0
 175     punpckhwd    m3, m4
 176     punpckhwd    m6, m0
 177     movd       [r0], m5
 178     punpckhdq    m5, m5
 179     movd  [r0+r1*1], m5
 180     movd  [r0+r1*2], m3
 181     punpckhdq    m3, m3
 182     movd    [r0+r3], m3
 183     movd       [r4], m1
 184     punpckhdq    m1, m1
 185     movd  [r4+r1*1], m1
 186     movd  [r4+r1*2], m6
 187     punpckhdq    m6, m6
 188     movd    [r4+r3], m6
 189     RET