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/*
* MMX-optimized avg/put pixel routines
*
* Copyright (c) 2000, 2001 Fabrice Bellard
* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stddef.h>
#include <stdint.h>
#include "config.h"
#include "dsputil_x86.h"
#include "inline_asm.h"
#if HAVE_MMX_INLINE
// in case more speed is needed - unrolling would certainly help
void ff_avg_pixels8_mmx(uint8_t *block, const uint8_t *pixels,
ptrdiff_t line_size, int h)
{
MOVQ_BFE(mm6);
JUMPALIGN();
do {
__asm__ volatile(
"movq %0, %%mm0 \n\t"
"movq %1, %%mm1 \n\t"
PAVGB_MMX(%%mm0, %%mm1, %%mm2, %%mm6)
"movq %%mm2, %0 \n\t"
:"+m"(*block)
:"m"(*pixels)
:"memory");
pixels += line_size;
block += line_size;
}
while (--h);
}
void ff_avg_pixels16_mmx(uint8_t *block, const uint8_t *pixels,
ptrdiff_t line_size, int h)
{
MOVQ_BFE(mm6);
JUMPALIGN();
do {
__asm__ volatile(
"movq %0, %%mm0 \n\t"
"movq %1, %%mm1 \n\t"
PAVGB_MMX(%%mm0, %%mm1, %%mm2, %%mm6)
"movq %%mm2, %0 \n\t"
"movq 8%0, %%mm0 \n\t"
"movq 8%1, %%mm1 \n\t"
PAVGB_MMX(%%mm0, %%mm1, %%mm2, %%mm6)
"movq %%mm2, 8%0 \n\t"
:"+m"(*block)
:"m"(*pixels)
:"memory");
pixels += line_size;
block += line_size;
}
while (--h);
}
void ff_put_pixels8_mmx(uint8_t *block, const uint8_t *pixels,
ptrdiff_t line_size, int h)
{
__asm__ volatile (
"lea (%3, %3), %%"REG_a" \n\t"
".p2align 3 \n\t"
"1: \n\t"
"movq (%1 ), %%mm0 \n\t"
"movq (%1, %3), %%mm1 \n\t"
"movq %%mm0, (%2) \n\t"
"movq %%mm1, (%2, %3) \n\t"
"add %%"REG_a", %1 \n\t"
"add %%"REG_a", %2 \n\t"
"movq (%1 ), %%mm0 \n\t"
"movq (%1, %3), %%mm1 \n\t"
"movq %%mm0, (%2) \n\t"
"movq %%mm1, (%2, %3) \n\t"
"add %%"REG_a", %1 \n\t"
"add %%"REG_a", %2 \n\t"
"subl $4, %0 \n\t"
"jnz 1b \n\t"
: "+g"(h), "+r"(pixels), "+r"(block)
: "r"((x86_reg)line_size)
: "%"REG_a, "memory"
);
}
void ff_put_pixels16_mmx(uint8_t *block, const uint8_t *pixels,
ptrdiff_t line_size, int h)
{
__asm__ volatile (
"lea (%3, %3), %%"REG_a" \n\t"
".p2align 3 \n\t"
"1: \n\t"
"movq (%1 ), %%mm0 \n\t"
"movq 8(%1 ), %%mm4 \n\t"
"movq (%1, %3), %%mm1 \n\t"
"movq 8(%1, %3), %%mm5 \n\t"
"movq %%mm0, (%2) \n\t"
"movq %%mm4, 8(%2) \n\t"
"movq %%mm1, (%2, %3) \n\t"
"movq %%mm5, 8(%2, %3) \n\t"
"add %%"REG_a", %1 \n\t"
"add %%"REG_a", %2 \n\t"
"movq (%1 ), %%mm0 \n\t"
"movq 8(%1 ), %%mm4 \n\t"
"movq (%1, %3), %%mm1 \n\t"
"movq 8(%1, %3), %%mm5 \n\t"
"movq %%mm0, (%2) \n\t"
"movq %%mm4, 8(%2) \n\t"
"movq %%mm1, (%2, %3) \n\t"
"movq %%mm5, 8(%2, %3) \n\t"
"add %%"REG_a", %1 \n\t"
"add %%"REG_a", %2 \n\t"
"subl $4, %0 \n\t"
"jnz 1b \n\t"
: "+g"(h), "+r"(pixels), "+r"(block)
: "r"((x86_reg)line_size)
: "%"REG_a, "memory"
);
}
#endif /* HAVE_MMX_INLINE */
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