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ffmpeg / libavcodec / x86 / h264_idct_sse2.asm @ 3f87f39c

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;*****************************************************************************
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;* SSE2-optimized H.264 iDCT
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;*****************************************************************************
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;* Copyright (C) 2003-2008 x264 project
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;*
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;* Authors: Laurent Aimar <fenrir@via.ecp.fr>
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;*          Loren Merritt <lorenm@u.washington.edu>
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;*          Holger Lubitz <hal@duncan.ol.sub.de>
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;*          Min Chen <chenm001.163.com>
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;*
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;* This program is free software; you can redistribute it and/or modify
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;* it under the terms of the GNU General Public License as published by
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;* the Free Software Foundation; either version 2 of the License, or
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;* (at your option) any later version.
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;*
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;* This program 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
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;* GNU General Public License for more details.
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;*
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;* You should have received a copy of the GNU General Public License
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;* along with this program; if not, write to the Free Software
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;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02111, USA.
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;*****************************************************************************
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%include "x86inc.asm"
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%include "x86util.asm"
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SECTION_RODATA
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pw_32: times 8 dw 32
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SECTION .text
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INIT_XMM
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cglobal x264_add8x4_idct_sse2, 3,3,8
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    movq   m0, [r1+ 0]
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    movq   m1, [r1+ 8]
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    movq   m2, [r1+16]
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    movq   m3, [r1+24]
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    movhps m0, [r1+32]
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    movhps m1, [r1+40]
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    movhps m2, [r1+48]
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    movhps m3, [r1+56]
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    IDCT4_1D 0,1,2,3,4,5
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    TRANSPOSE2x4x4W 0,1,2,3,4
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    paddw m0, [pw_32 GLOBAL]
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    IDCT4_1D 0,1,2,3,4,5
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    pxor  m7, m7
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    STORE_DIFF  m0, m4, m7, [r0]
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    STORE_DIFF  m1, m4, m7, [r0+r2]
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    lea   r0, [r0+r2*2]
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    STORE_DIFF  m2, m4, m7, [r0]
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    STORE_DIFF  m3, m4, m7, [r0+r2]
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    RET