util.h
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/*****************************************************************************
* util.h: x86 inline asm
*****************************************************************************
* Copyright (C) 2008-2024 x264 project
*
* Authors: Fiona Glaser <fiona@x264.com>
* Loren Merritt <lorenm@u.washington.edu>
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
*
* This program is also available under a commercial proprietary license.
* For more information, contact us at licensing@x264.com.
*****************************************************************************/
#ifndef X264_X86_UTIL_H
#define X264_X86_UTIL_H
#ifdef __SSE__
#include <xmmintrin.h>
#undef M128_ZERO
#define M128_ZERO ((__m128){0,0,0,0})
#define x264_union128_t x264_union128_sse_t
typedef union { __m128 i; uint64_t q[2]; uint32_t d[4]; uint16_t w[8]; uint8_t b[16]; } MAY_ALIAS x264_union128_sse_t;
#if HAVE_VECTOREXT
typedef uint32_t v4si __attribute__((vector_size (16)));
#endif
#endif // __SSE__
#if HAVE_X86_INLINE_ASM && HAVE_MMX
#define x264_median_mv x264_median_mv_mmx2
static ALWAYS_INLINE void x264_median_mv_mmx2( int16_t *dst, int16_t *a, int16_t *b, int16_t *c )
{
asm(
"movd %1, %%mm0 \n"
"movd %2, %%mm1 \n"
"movq %%mm0, %%mm3 \n"
"movd %3, %%mm2 \n"
"pmaxsw %%mm1, %%mm0 \n"
"pminsw %%mm3, %%mm1 \n"
"pminsw %%mm2, %%mm0 \n"
"pmaxsw %%mm1, %%mm0 \n"
"movd %%mm0, %0 \n"
:"=m"(*(x264_union32_t*)dst)
:"m"(M32( a )), "m"(M32( b )), "m"(M32( c ))
:"mm0", "mm1", "mm2", "mm3"
);
}
#define x264_predictor_difference x264_predictor_difference_mmx2
static ALWAYS_INLINE int x264_predictor_difference_mmx2( int16_t (*mvc)[2], intptr_t i_mvc )
{
int sum;
static const uint64_t pw_1 = 0x0001000100010001ULL;
asm(
"pxor %%mm4, %%mm4 \n"
"test $1, %1 \n"
"jnz 3f \n"
"movd -8(%2,%1,4), %%mm0 \n"
"movd -4(%2,%1,4), %%mm3 \n"
"psubw %%mm3, %%mm0 \n"
"jmp 2f \n"
"3: \n"
"dec %1 \n"
"1: \n"
"movq -8(%2,%1,4), %%mm0 \n"
"psubw -4(%2,%1,4), %%mm0 \n"
"2: \n"
"sub $2, %1 \n"
"pxor %%mm2, %%mm2 \n"
"psubw %%mm0, %%mm2 \n"
"pmaxsw %%mm2, %%mm0 \n"
"paddusw %%mm0, %%mm4 \n"
"jg 1b \n"
"pmaddwd %4, %%mm4 \n"
"pshufw $14, %%mm4, %%mm0 \n"
"paddd %%mm0, %%mm4 \n"
"movd %%mm4, %0 \n"
:"=r"(sum), "+r"(i_mvc)
:"r"(mvc), "m"(MEM_DYN( mvc, const int16_t )), "m"(pw_1)
:"mm0", "mm2", "mm3", "mm4", "cc"
);
return sum;
}
#define x264_cabac_mvd_sum x264_cabac_mvd_sum_mmx2
static ALWAYS_INLINE uint16_t x264_cabac_mvd_sum_mmx2(uint8_t *mvdleft, uint8_t *mvdtop)
{
static const uint64_t pb_2 = 0x0202020202020202ULL;
static const uint64_t pb_32 = 0x2020202020202020ULL;
static const uint64_t pb_33 = 0x2121212121212121ULL;
int amvd;
asm(
"movd %1, %%mm0 \n"
"movd %2, %%mm1 \n"
"paddusb %%mm1, %%mm0 \n"
"pminub %5, %%mm0 \n"
"pxor %%mm2, %%mm2 \n"
"movq %%mm0, %%mm1 \n"
"pcmpgtb %3, %%mm0 \n"
"pcmpgtb %4, %%mm1 \n"
"psubb %%mm0, %%mm2 \n"
"psubb %%mm1, %%mm2 \n"
"movd %%mm2, %0 \n"
:"=r"(amvd)
:"m"(M16( mvdleft )),"m"(M16( mvdtop )),
"m"(pb_2),"m"(pb_32),"m"(pb_33)
:"mm0", "mm1", "mm2"
);
return (uint16_t)amvd;
}
#define x264_predictor_clip x264_predictor_clip_mmx2
static ALWAYS_INLINE int x264_predictor_clip_mmx2( int16_t (*dst)[2], int16_t (*mvc)[2], int i_mvc, int16_t mv_limit[2][2], uint32_t pmv )
{
static const uint32_t pd_32 = 0x20;
intptr_t tmp = (intptr_t)mv_limit, mvc_max = i_mvc, i = 0;
asm(
"movq (%2), %%mm5 \n"
"movd %6, %%mm3 \n"
"psllw $2, %%mm5 \n" // Convert to subpel
"pshufw $0xEE, %%mm5, %%mm6 \n"
"dec %k3 \n"
"jz 2f \n" // if( i_mvc == 1 ) {do the last iteration}
"punpckldq %%mm3, %%mm3 \n"
"punpckldq %%mm5, %%mm5 \n"
"movd %7, %%mm4 \n"
"lea (%0,%3,4), %3 \n"
"1: \n"
"movq (%0), %%mm0 \n"
"add $8, %0 \n"
"movq %%mm3, %%mm1 \n"
"pxor %%mm2, %%mm2 \n"
"pcmpeqd %%mm0, %%mm1 \n" // mv == pmv
"pcmpeqd %%mm0, %%mm2 \n" // mv == 0
"por %%mm1, %%mm2 \n" // (mv == pmv || mv == 0) * -1
"pmovmskb %%mm2, %k2 \n" // (mv == pmv || mv == 0) * 0xf
"pmaxsw %%mm5, %%mm0 \n"
"pminsw %%mm6, %%mm0 \n"
"pand %%mm4, %%mm2 \n" // (mv0 == pmv || mv0 == 0) * 32
"psrlq %%mm2, %%mm0 \n" // drop mv0 if it's skipped
"movq %%mm0, (%5,%4,4) \n"
"and $24, %k2 \n"
"add $2, %4 \n"
"add $8, %k2 \n"
"shr $4, %k2 \n" // (4-val)>>1
"sub %2, %4 \n" // +1 for each valid motion vector
"cmp %3, %0 \n"
"jl 1b \n"
"jg 3f \n" // if( i == i_mvc - 1 ) {do the last iteration}
/* Do the last iteration */
"2: \n"
"movd (%0), %%mm0 \n"
"pxor %%mm2, %%mm2 \n"
"pcmpeqd %%mm0, %%mm3 \n"
"pcmpeqd %%mm0, %%mm2 \n"
"por %%mm3, %%mm2 \n"
"pmovmskb %%mm2, %k2 \n"
"pmaxsw %%mm5, %%mm0 \n"
"pminsw %%mm6, %%mm0 \n"
"movd %%mm0, (%5,%4,4) \n"
"inc %4 \n"
"and $1, %k2 \n"
"sub %2, %4 \n" // output += !(mv == pmv || mv == 0)
"3: \n"
:"+r"(mvc), "=m"(MEM_DYN( dst, int16_t )), "+r"(tmp), "+r"(mvc_max), "+r"(i)
:"r"(dst), "g"(pmv), "m"(pd_32), "m"(MEM_DYN( mvc, const int16_t ))
:"mm0", "mm1", "mm2", "mm3", "mm4", "mm5", "mm6", "cc"
);
return i;
}
/* Same as the above, except we do (mv + 2) >> 2 on the input. */
#define x264_predictor_roundclip x264_predictor_roundclip_mmx2
static ALWAYS_INLINE int x264_predictor_roundclip_mmx2( int16_t (*dst)[2], int16_t (*mvc)[2], int i_mvc, int16_t mv_limit[2][2], uint32_t pmv )
{
static const uint64_t pw_2 = 0x0002000200020002ULL;
static const uint32_t pd_32 = 0x20;
intptr_t tmp = (intptr_t)mv_limit, mvc_max = i_mvc, i = 0;
asm(
"movq (%2), %%mm5 \n"
"movq %6, %%mm7 \n"
"movd %7, %%mm3 \n"
"pshufw $0xEE, %%mm5, %%mm6 \n"
"dec %k3 \n"
"jz 2f \n"
"punpckldq %%mm3, %%mm3 \n"
"punpckldq %%mm5, %%mm5 \n"
"movd %8, %%mm4 \n"
"lea (%0,%3,4), %3 \n"
"1: \n"
"movq (%0), %%mm0 \n"
"add $8, %0 \n"
"paddw %%mm7, %%mm0 \n"
"psraw $2, %%mm0 \n"
"movq %%mm3, %%mm1 \n"
"pxor %%mm2, %%mm2 \n"
"pcmpeqd %%mm0, %%mm1 \n"
"pcmpeqd %%mm0, %%mm2 \n"
"por %%mm1, %%mm2 \n"
"pmovmskb %%mm2, %k2 \n"
"pmaxsw %%mm5, %%mm0 \n"
"pminsw %%mm6, %%mm0 \n"
"pand %%mm4, %%mm2 \n"
"psrlq %%mm2, %%mm0 \n"
"movq %%mm0, (%5,%4,4) \n"
"and $24, %k2 \n"
"add $2, %4 \n"
"add $8, %k2 \n"
"shr $4, %k2 \n"
"sub %2, %4 \n"
"cmp %3, %0 \n"
"jl 1b \n"
"jg 3f \n"
/* Do the last iteration */
"2: \n"
"movd (%0), %%mm0 \n"
"paddw %%mm7, %%mm0 \n"
"psraw $2, %%mm0 \n"
"pxor %%mm2, %%mm2 \n"
"pcmpeqd %%mm0, %%mm3 \n"
"pcmpeqd %%mm0, %%mm2 \n"
"por %%mm3, %%mm2 \n"
"pmovmskb %%mm2, %k2 \n"
"pmaxsw %%mm5, %%mm0 \n"
"pminsw %%mm6, %%mm0 \n"
"movd %%mm0, (%5,%4,4) \n"
"inc %4 \n"
"and $1, %k2 \n"
"sub %2, %4 \n"
"3: \n"
:"+r"(mvc), "=m"(MEM_DYN( dst, int16_t )), "+r"(tmp), "+r"(mvc_max), "+r"(i)
:"r"(dst), "m"(pw_2), "g"(pmv), "m"(pd_32), "m"(MEM_DYN( mvc, const int16_t ))
:"mm0", "mm1", "mm2", "mm3", "mm4", "mm5", "mm6", "mm7", "cc"
);
return i;
}
#endif
#endif