mirror of
https://github.com/FFmpeg/FFmpeg.git
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140 lines
4.7 KiB
C
140 lines
4.7 KiB
C
/*
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* MMX-optimized avg/put pixel routines
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*
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* Copyright (c) 2000, 2001 Fabrice Bellard
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* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
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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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// in case more speed is needed - unrolling would certainly help
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void ff_avg_pixels8_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 %0, %%mm0 \n\t"
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"movq %1, %%mm1 \n\t"
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PAVGB_MMX(%%mm0, %%mm1, %%mm2, %%mm6)
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"movq %%mm2, %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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}
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while (--h);
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}
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void ff_avg_pixels16_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 %0, %%mm0 \n\t"
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"movq %1, %%mm1 \n\t"
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PAVGB_MMX(%%mm0, %%mm1, %%mm2, %%mm6)
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"movq %%mm2, %0 \n\t"
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"movq 8%0, %%mm0 \n\t"
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"movq 8%1, %%mm1 \n\t"
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PAVGB_MMX(%%mm0, %%mm1, %%mm2, %%mm6)
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"movq %%mm2, 8%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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}
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while (--h);
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}
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void ff_put_pixels8_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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__asm__ volatile (
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"lea (%3, %3), %%"REG_a" \n\t"
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".p2align 3 \n\t"
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"1: \n\t"
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"movq (%1 ), %%mm0 \n\t"
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"movq (%1, %3), %%mm1 \n\t"
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"movq %%mm0, (%2) \n\t"
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"movq %%mm1, (%2, %3) \n\t"
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"add %%"REG_a", %1 \n\t"
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"add %%"REG_a", %2 \n\t"
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"movq (%1 ), %%mm0 \n\t"
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"movq (%1, %3), %%mm1 \n\t"
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"movq %%mm0, (%2) \n\t"
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"movq %%mm1, (%2, %3) \n\t"
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"add %%"REG_a", %1 \n\t"
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"add %%"REG_a", %2 \n\t"
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"subl $4, %0 \n\t"
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"jnz 1b \n\t"
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: "+g"(h), "+r"(pixels), "+r"(block)
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: "r"((x86_reg)line_size)
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: "%"REG_a, "memory"
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);
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}
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void ff_put_pixels16_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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__asm__ volatile (
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"lea (%3, %3), %%"REG_a" \n\t"
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".p2align 3 \n\t"
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"1: \n\t"
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"movq (%1 ), %%mm0 \n\t"
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"movq 8(%1 ), %%mm4 \n\t"
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"movq (%1, %3), %%mm1 \n\t"
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"movq 8(%1, %3), %%mm5 \n\t"
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"movq %%mm0, (%2) \n\t"
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"movq %%mm4, 8(%2) \n\t"
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"movq %%mm1, (%2, %3) \n\t"
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"movq %%mm5, 8(%2, %3) \n\t"
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"add %%"REG_a", %1 \n\t"
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"add %%"REG_a", %2 \n\t"
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"movq (%1 ), %%mm0 \n\t"
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"movq 8(%1 ), %%mm4 \n\t"
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"movq (%1, %3), %%mm1 \n\t"
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"movq 8(%1, %3), %%mm5 \n\t"
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"movq %%mm0, (%2) \n\t"
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"movq %%mm4, 8(%2) \n\t"
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"movq %%mm1, (%2, %3) \n\t"
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"movq %%mm5, 8(%2, %3) \n\t"
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"add %%"REG_a", %1 \n\t"
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"add %%"REG_a", %2 \n\t"
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"subl $4, %0 \n\t"
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"jnz 1b \n\t"
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: "+g"(h), "+r"(pixels), "+r"(block)
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: "r"((x86_reg)line_size)
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: "%"REG_a, "memory"
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);
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}
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#endif /* HAVE_MMX_INLINE */
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