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ffmpeg/libavcodec/i386/dsputil_mmx_avg.h
Zdenek Kabelac 2bd978bdb8 * fixed contrains and avoid usage of scale index access 
Originally committed as revision 566 to svn://svn.ffmpeg.org/ffmpeg/trunk
2002-05-23 10:10:14 +00:00

352 lines
11 KiB
C
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/*
* DSP utils : average functions are compiled twice for 3dnow/mmx2
* Copyright (c) 2000, 2001 Gerard Lantau.
* Copyright (c) 2002 Michael Niedermayer
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* MMX optimization by Nick Kurshev <nickols_k@mail.ru>
* mostly rewritten by Michael Niedermayer <michaelni@gmx.at>
*/
/* XXX: we use explicit registers to avoid a gcc 2.95.2 register asm
clobber bug - now it will work with 2.95.2 and also with -fPIC
*/
static void DEF(put_pixels_x2)(UINT8 *block, const UINT8 *pixels, int line_size, int h)
{
__asm __volatile(
"xorl %%eax, %%eax \n\t"
".balign 16 \n\t"
"1: \n\t"
"movq (%1, %%eax), %%mm0 \n\t"
"movq 1(%1, %%eax), %%mm1 \n\t"
"movq (%2, %%eax), %%mm2 \n\t"
"movq 1(%2, %%eax), %%mm3 \n\t"
PAVGB" %%mm1, %%mm0 \n\t"
PAVGB" %%mm3, %%mm2 \n\t"
"movq %%mm0, (%3, %%eax) \n\t"
"movq %%mm2, (%4, %%eax) \n\t"
"addl %5, %%eax \n\t"
"movq (%1, %%eax), %%mm0 \n\t"
"movq 1(%1, %%eax), %%mm1 \n\t"
"movq (%2, %%eax), %%mm2 \n\t"
"movq 1(%2, %%eax), %%mm3 \n\t"
PAVGB" %%mm1, %%mm0 \n\t"
PAVGB" %%mm3, %%mm2 \n\t"
"movq %%mm0, (%3, %%eax) \n\t"
"movq %%mm2, (%4, %%eax) \n\t"
"addl %5, %%eax \n\t"
"subl $4, %0 \n\t"
" jnz 1b \n\t"
:"+g"(h)
:"D"(pixels), "S"(pixels+line_size), "r" (block), "r" (block+line_size),
"g"(line_size<<1)
:"%eax", "memory");
}
/* GL: this function does incorrect rounding if overflow */
static void DEF(put_no_rnd_pixels_x2)(UINT8 *block, const UINT8 *pixels, int line_size, int h)
{
__asm __volatile(
"xorl %%eax, %%eax \n\t"
MOVQ_BONE(%%mm7)
".balign 16 \n\t"
"1: \n\t"
"movq (%1, %%eax), %%mm0 \n\t"
"movq 1(%1, %%eax), %%mm1 \n\t"
"movq (%2, %%eax), %%mm2 \n\t"
"movq 1(%2, %%eax), %%mm3 \n\t"
"psubusb %%mm7, %%mm0 \n\t"
"psubusb %%mm7, %%mm2 \n\t"
PAVGB" %%mm1, %%mm0 \n\t"
PAVGB" %%mm3, %%mm2 \n\t"
"movq %%mm0, (%3, %%eax) \n\t"
"movq %%mm2, (%4, %%eax) \n\t"
"addl %5, %%eax \n\t"
"movq (%1, %%eax), %%mm0 \n\t"
"movq 1(%1, %%eax), %%mm1 \n\t"
"movq (%2, %%eax), %%mm2 \n\t"
"movq 1(%2, %%eax), %%mm3 \n\t"
"psubusb %%mm7, %%mm0 \n\t"
"psubusb %%mm7, %%mm2 \n\t"
PAVGB" %%mm1, %%mm0 \n\t"
PAVGB" %%mm3, %%mm2 \n\t"
"movq %%mm0, (%3, %%eax) \n\t"
"movq %%mm2, (%4, %%eax) \n\t"
"addl %5, %%eax \n\t"
"subl $4, %0 \n\t"
" jnz 1b \n\t"
:"+g"(h)
:"D"(pixels), "S"(pixels+line_size), "r" (block), "r" (block+line_size),
"r"(line_size<<1)
:"%eax", "memory");
}
static void DEF(put_pixels_y2)(UINT8 *block, const UINT8 *pixels, int line_size, int h)
{
#if 1
// Michael - measure me
__asm __volatile(
"lea (%3, %3), %%eax \n\t"
"movq (%1), %%mm0 \n\t"
"subl %3, %2 \n\t"
".balign 16 \n\t"
"1: \n\t"
"movq (%1, %3), %%mm1 \n\t"
"movq (%1, %%eax), %%mm2 \n\t"
PAVGB" %%mm1, %%mm0 \n\t"
PAVGB" %%mm2, %%mm1 \n\t"
"addl %%eax, %1 \n\t"
"movq %%mm0, (%2, %3) \n\t"
"movq %%mm1, (%2, %%eax) \n\t"
"movq (%1, %3), %%mm1 \n\t"
"movq (%1, %%eax), %%mm0 \n\t"
PAVGB" %%mm1, %%mm2 \n\t"
PAVGB" %%mm0, %%mm1 \n\t"
"addl %%eax, %2 \n\t"
"addl %%eax, %1 \n\t"
"movq %%mm2, (%2, %3) \n\t"
"movq %%mm1, (%2, %%eax) \n\t"
"addl %%eax, %2 \n\t"
"subl $4, %0 \n\t"
"jnz 1b \n\t"
:"+g"(h), "+D"(pixels), "+S" (block)
:"c"(line_size)
:"%eax", "memory");
#else
// kabi measure me
__asm __volatile(
"movq (%2), %%mm0 \n\t"
"addl %1, %2 \n\t"
"xorl %%eax, %%eax \n\t"
"leal (%1, %2), %%edi \n\t"
"leal (%1, %3), %%esi \n\t"
"addl %1, %1 \n\t"
".balign 16 \n\t"
"1: \n\t"
"movq (%2 , %%eax), %%mm1 \n\t"
"movq (%%edi, %%eax), %%mm2 \n\t"
PAVGB" %%mm1, %%mm0 \n\t"
PAVGB" %%mm2, %%mm1 \n\t"
"movq %%mm0, (%3 , %%eax) \n\t"
"movq %%mm1, (%%esi, %%eax) \n\t"
"addl %1, %%eax \n\t"
"movq (%2 , %%eax), %%mm1 \n\t"
"movq (%%edi, %%eax), %%mm0 \n\t"
PAVGB" %%mm1, %%mm2 \n\t"
PAVGB" %%mm0, %%mm1 \n\t"
"movq %%mm2, (%3 , %%eax) \n\t"
"movq %%mm1, (%%esi, %%eax) \n\t"
"addl %1, %%eax \n\t"
"subl $4, %0 \n\t"
" jnz 1b \n\t"
:"+g"(h), "+r"(line_size), "+r"(pixels)
: "r" (block)
: "%eax", "%esi", "%edi", "memory");
#endif
}
/* GL: this function does incorrect rounding if overflow */
static void DEF(put_no_rnd_pixels_y2)(UINT8 *block, const UINT8 *pixels, int line_size, int h)
{
__asm __volatile(
MOVQ_BONE(%%mm7)
"xorl %%eax, %%eax \n\t"
"movq (%1), %%mm0 \n\t"
".balign 16 \n\t"
"1: \n\t"
"movq (%2, %%eax), %%mm1 \n\t"
"movq (%3, %%eax), %%mm2 \n\t"
"psubusb %%mm7, %%mm1 \n\t"
PAVGB" %%mm1, %%mm0 \n\t"
PAVGB" %%mm2, %%mm1 \n\t"
"movq %%mm0, (%4, %%eax) \n\t"
"movq %%mm1, (%5, %%eax) \n\t"
"addl %6, %%eax \n\t"
"movq (%2, %%eax), %%mm1 \n\t"
"movq (%3, %%eax), %%mm0 \n\t"
"psubusb %%mm7, %%mm1 \n\t"
PAVGB" %%mm1, %%mm2 \n\t"
PAVGB" %%mm0, %%mm1 \n\t"
"movq %%mm2, (%4, %%eax) \n\t"
"movq %%mm1, (%5, %%eax) \n\t"
"addl %6, %%eax \n\t"
"subl $4, %0 \n\t"
" jnz 1b \n\t"
:"+g"(h)
:"D"(pixels), "S"(pixels+line_size), "r"(pixels+line_size*2), "r" (block),
"r" (block+line_size), "g"(line_size<<1)
:"%eax", "memory");
}
static void DEF(avg_pixels)(UINT8 *block, const UINT8 *pixels, int line_size, int h)
{
__asm __volatile(
"xorl %%eax, %%eax \n\t"
".balign 16 \n\t"
"1: \n\t"
"movq (%1, %%eax), %%mm0 \n\t"
"movq (%2, %%eax), %%mm2 \n\t"
"movq (%3, %%eax), %%mm3 \n\t"
"movq (%4, %%eax), %%mm4 \n\t"
PAVGB" %%mm3, %%mm0 \n\t"
PAVGB" %%mm4, %%mm2 \n\t"
"movq %%mm0, (%3, %%eax) \n\t"
"movq %%mm2, (%4, %%eax) \n\t"
"addl %5, %%eax \n\t"
"movq (%1, %%eax), %%mm0 \n\t"
"movq (%2, %%eax), %%mm2 \n\t"
"movq (%3, %%eax), %%mm3 \n\t"
"movq (%4, %%eax), %%mm4 \n\t"
PAVGB" %%mm3, %%mm0 \n\t"
PAVGB" %%mm4, %%mm2 \n\t"
"movq %%mm0, (%3, %%eax) \n\t"
"movq %%mm2, (%4, %%eax) \n\t"
"addl %5, %%eax \n\t"
"subl $4, %0 \n\t"
" jnz 1b \n\t"
:"+g"(h)
:"D"(pixels), "S"(pixels+line_size), "r" (block), "r" (block+line_size),
"g"(line_size<<1)
:"%eax", "memory");
}
static void DEF(avg_pixels_x2)(UINT8 *block, const UINT8 *pixels, int line_size, int h)
{
__asm __volatile(
"xorl %%eax, %%eax \n\t"
".balign 16 \n\t"
"1: \n\t"
"movq (%1, %%eax), %%mm0 \n\t"
"movq 1(%1, %%eax), %%mm1 \n\t"
"movq (%2, %%eax), %%mm2 \n\t"
"movq 1(%2, %%eax), %%mm3 \n\t"
PAVGB" %%mm1, %%mm0 \n\t"
PAVGB" %%mm3, %%mm2 \n\t"
"movq (%3, %%eax), %%mm3 \n\t"
"movq (%4, %%eax), %%mm4 \n\t"
PAVGB" %%mm3, %%mm0 \n\t"
PAVGB" %%mm4, %%mm2 \n\t"
"movq %%mm0, (%3, %%eax) \n\t"
"movq %%mm2, (%4, %%eax) \n\t"
"addl %5, %%eax \n\t"
"movq (%1, %%eax), %%mm0 \n\t"
"movq 1(%1, %%eax), %%mm1 \n\t"
"movq (%2, %%eax), %%mm2 \n\t"
"movq 1(%2, %%eax), %%mm3 \n\t"
PAVGB" %%mm1, %%mm0 \n\t"
PAVGB" %%mm3, %%mm2 \n\t"
"movq (%3, %%eax), %%mm3 \n\t"
"movq (%4, %%eax), %%mm4 \n\t"
PAVGB" %%mm3, %%mm0 \n\t"
PAVGB" %%mm4, %%mm2 \n\t"
"movq %%mm0, (%3, %%eax) \n\t"
"movq %%mm2, (%4, %%eax) \n\t"
"addl %5, %%eax \n\t"
"subl $4, %0 \n\t"
" jnz 1b \n\t"
:"+g"(h)
:"D"(pixels), "S"(pixels+line_size), "r" (block), "r" (block+line_size),
"g"(line_size<<1)
:"%eax", "memory");
}
static void DEF(avg_pixels_y2)(UINT8 *block, const UINT8 *pixels, int line_size, int h)
{
__asm __volatile(
"xorl %%eax, %%eax \n\t"
"movq (%1), %%mm0 \n\t"
".balign 16 \n\t"
"1: \n\t"
"movq (%2, %%eax), %%mm1 \n\t"
"movq (%3, %%eax), %%mm2 \n\t"
PAVGB" %%mm1, %%mm0 \n\t"
PAVGB" %%mm2, %%mm1 \n\t"
"movq (%4, %%eax), %%mm3 \n\t"
"movq (%5, %%eax), %%mm4 \n\t"
PAVGB" %%mm3, %%mm0 \n\t"
PAVGB" %%mm4, %%mm1 \n\t"
"movq %%mm0, (%4, %%eax) \n\t"
"movq %%mm1, (%5, %%eax) \n\t"
"addl %6, %%eax \n\t"
"movq (%2, %%eax), %%mm1 \n\t"
"movq (%3, %%eax), %%mm0 \n\t"
PAVGB" %%mm1, %%mm2 \n\t"
PAVGB" %%mm0, %%mm1 \n\t"
"movq (%4, %%eax), %%mm3 \n\t"
"movq (%5, %%eax), %%mm4 \n\t"
PAVGB" %%mm3, %%mm2 \n\t"
PAVGB" %%mm4, %%mm1 \n\t"
"movq %%mm2, (%4, %%eax) \n\t"
"movq %%mm1, (%5, %%eax) \n\t"
"addl %6, %%eax \n\t"
"subl $4, %0 \n\t"
" jnz 1b \n\t"
:"+g"(h)
:"D"(pixels), "S"(pixels+line_size), "r"(pixels+line_size*2), "r" (block),
"r" (block+line_size), "g"(line_size<<1)
:"%eax", "memory");
}
// Note this is not correctly rounded, but this function is only used for b frames so it doesnt matter
static void DEF(avg_pixels_xy2)(UINT8 *block, const UINT8 *pixels, int line_size, int h)
{
__asm __volatile(
MOVQ_BONE(%%mm7)
"xorl %%eax, %%eax \n\t"
"movq (%1), %%mm0 \n\t"
"movq 1(%1), %%mm1 \n\t"
PAVGB" %%mm1, %%mm0 \n\t"
".balign 16 \n\t"
"1: \n\t"
"movq (%2, %%eax), %%mm1 \n\t"
"movq (%3, %%eax), %%mm2 \n\t"
"movq 1(%2, %%eax), %%mm3 \n\t"
"movq 1(%3, %%eax), %%mm4 \n\t"
"psubusb %%mm7, %%mm2 \n\t"
PAVGB" %%mm3, %%mm1 \n\t"
PAVGB" %%mm4, %%mm2 \n\t"
PAVGB" %%mm1, %%mm0 \n\t"
PAVGB" %%mm2, %%mm1 \n\t"
"movq (%4, %%eax), %%mm3 \n\t"
"movq (%5, %%eax), %%mm4 \n\t"
PAVGB" %%mm3, %%mm0 \n\t"
PAVGB" %%mm4, %%mm1 \n\t"
"movq %%mm0, (%4, %%eax) \n\t"
"movq %%mm1, (%5, %%eax) \n\t"
"addl %6, %%eax \n\t"
"movq (%2, %%eax), %%mm1 \n\t"
"movq (%3, %%eax), %%mm0 \n\t"
"movq 1(%2, %%eax), %%mm3 \n\t"
"movq 1(%3, %%eax), %%mm4 \n\t"
PAVGB" %%mm3, %%mm1 \n\t"
PAVGB" %%mm4, %%mm0 \n\t"
PAVGB" %%mm1, %%mm2 \n\t"
PAVGB" %%mm0, %%mm1 \n\t"
"movq (%4, %%eax), %%mm3 \n\t"
"movq (%5, %%eax), %%mm4 \n\t"
PAVGB" %%mm3, %%mm2 \n\t"
PAVGB" %%mm4, %%mm1 \n\t"
"movq %%mm2, (%4, %%eax) \n\t"
"movq %%mm1, (%5, %%eax) \n\t"
"addl %6, %%eax \n\t"
"subl $4, %0 \n\t"
" jnz 1b \n\t"
:"+g"(h)
:"D"(pixels), "S"(pixels+line_size), "r"(pixels+line_size*2), "r" (block),
"r" (block+line_size), "g"(line_size<<1)
:"%eax", "memory");
}
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