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2ddb35b911
The function does not depend on MMX and compilation without MMX enabled fails if the function is compiled conditional on MMX availability.
66 lines
2.3 KiB
C
66 lines
2.3 KiB
C
/*
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* Copyright (c) 2009 Loren Merritt <lorenm@u.washington.edu>
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*
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* This file is part of Libav.
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*
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* Libav 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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* Libav 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 Libav; 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 "config.h"
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#include "libavutil/x86/asm.h"
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#include "dsputil_x86.h"
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#if HAVE_INLINE_ASM
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#if HAVE_7REGS
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void ff_add_hfyu_median_prediction_cmov(uint8_t *dst, const uint8_t *top,
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const uint8_t *diff, int w,
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int *left, int *left_top)
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{
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x86_reg w2 = -w;
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x86_reg x;
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int l = *left & 0xff;
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int tl = *left_top & 0xff;
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int t;
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__asm__ volatile (
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"mov %7, %3 \n"
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"1: \n"
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"movzbl (%3, %4), %2 \n"
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"mov %2, %k3 \n"
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"sub %b1, %b3 \n"
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"add %b0, %b3 \n"
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"mov %2, %1 \n"
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"cmp %0, %2 \n"
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"cmovg %0, %2 \n"
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"cmovg %1, %0 \n"
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"cmp %k3, %0 \n"
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"cmovg %k3, %0 \n"
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"mov %7, %3 \n"
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"cmp %2, %0 \n"
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"cmovl %2, %0 \n"
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"add (%6, %4), %b0 \n"
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"mov %b0, (%5, %4) \n"
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"inc %4 \n"
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"jl 1b \n"
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: "+&q"(l), "+&q"(tl), "=&r"(t), "=&q"(x), "+&r"(w2)
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: "r"(dst + w), "r"(diff + w), "rm"(top + w)
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);
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*left = l;
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*left_top = tl;
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}
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#endif
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#endif /* HAVE_INLINE_ASM */
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