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53 lines
1.6 KiB
C
53 lines
1.6 KiB
C
/*
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* MMX-optimized avg/put pixel routines
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*
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* Copyright (c) 2001 Fabrice Bellard
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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 <stddef.h>
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#include <stdint.h>
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#include "config.h"
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#include "dsputil_x86.h"
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#if HAVE_MMX_INLINE
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void ff_avg_pixels8_x2_mmx(uint8_t *block, const uint8_t *pixels,
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ptrdiff_t line_size, int h)
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{
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MOVQ_BFE(mm6);
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JUMPALIGN();
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do {
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__asm__ volatile(
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"movq %1, %%mm0 \n\t"
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"movq 1%1, %%mm1 \n\t"
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"movq %0, %%mm3 \n\t"
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PAVGB_MMX(%%mm0, %%mm1, %%mm2, %%mm6)
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PAVGB_MMX(%%mm3, %%mm2, %%mm0, %%mm6)
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"movq %%mm0, %0 \n\t"
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:"+m"(*block)
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:"m"(*pixels)
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:"memory");
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pixels += line_size;
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block += line_size;
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} while (--h);
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}
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#endif /* HAVE_MMX_INLINE */
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