77 lines
2.1 KiB
NASM
77 lines
2.1 KiB
NASM
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;******************************************************************************
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;* SIMD-optimized HuffYUV functions
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;* Copyright (c) 2008 Loren Merritt
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;* Copyright (c) 2014 Christophe Gisquet
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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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%macro INT16_LOOP 2 ; %1 = a/u (aligned/unaligned), %2 = add/sub
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movd xm4, maskd
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SPLATW m4, xm4
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add wd, wd
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test wq, 2*mmsize - 1
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jz %%.tomainloop
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push tmpq
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%%.wordloop:
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sub wq, 2
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%ifidn %2, add
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mov tmpw, [srcq+wq]
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add tmpw, [dstq+wq]
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%else
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mov tmpw, [src1q+wq]
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sub tmpw, [src2q+wq]
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%endif
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and tmpw, maskw
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mov [dstq+wq], tmpw
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test wq, 2*mmsize - 1
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jnz %%.wordloop
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pop tmpq
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%%.tomainloop:
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%ifidn %2, add
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add srcq, wq
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%else
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add src1q, wq
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add src2q, wq
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%endif
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add dstq, wq
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neg wq
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jz %%.end
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%%.loop:
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%ifidn %2, add
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mov%1 m0, [srcq+wq]
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mov%1 m1, [dstq+wq]
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mov%1 m2, [srcq+wq+mmsize]
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mov%1 m3, [dstq+wq+mmsize]
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%else
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mov%1 m0, [src1q+wq]
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mov%1 m1, [src2q+wq]
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mov%1 m2, [src1q+wq+mmsize]
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mov%1 m3, [src2q+wq+mmsize]
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%endif
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p%2w m0, m1
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p%2w m2, m3
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pand m0, m4
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pand m2, m4
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mov%1 [dstq+wq] , m0
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mov%1 [dstq+wq+mmsize], m2
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add wq, 2*mmsize
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jl %%.loop
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%%.end:
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RET
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%endmacro
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