mirror of https://git.ffmpeg.org/ffmpeg.git
241 lines
9.4 KiB
C
241 lines
9.4 KiB
C
/*
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* Copyright (C) 2006 Michael Niedermayer <michaelni@gmx.at>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* FFmpeg 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with FFmpeg; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "libavutil/cpu.h"
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#include "libavutil/x86_cpu.h"
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#include "libavfilter/yadif.h"
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#if HAVE_MMX
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#define LOAD4(mem,dst) \
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"movd "mem", "#dst" \n\t"\
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"punpcklbw %%mm7, "#dst" \n\t"
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#define PABS(tmp,dst) \
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"pxor "#tmp", "#tmp" \n\t"\
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"psubw "#dst", "#tmp" \n\t"\
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"pmaxsw "#tmp", "#dst" \n\t"
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#define CHECK(pj,mj) \
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"movq "#pj"(%[cur],%[mrefs]), %%mm2 \n\t" /* cur[x-refs-1+j] */\
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"movq "#mj"(%[cur],%[prefs]), %%mm3 \n\t" /* cur[x+refs-1-j] */\
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"movq %%mm2, %%mm4 \n\t"\
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"movq %%mm2, %%mm5 \n\t"\
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"pxor %%mm3, %%mm4 \n\t"\
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"pavgb %%mm3, %%mm5 \n\t"\
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"pand %[pb1], %%mm4 \n\t"\
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"psubusb %%mm4, %%mm5 \n\t"\
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"psrlq $8, %%mm5 \n\t"\
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"punpcklbw %%mm7, %%mm5 \n\t" /* (cur[x-refs+j] + cur[x+refs-j])>>1 */\
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"movq %%mm2, %%mm4 \n\t"\
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"psubusb %%mm3, %%mm2 \n\t"\
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"psubusb %%mm4, %%mm3 \n\t"\
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"pmaxub %%mm3, %%mm2 \n\t"\
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"movq %%mm2, %%mm3 \n\t"\
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"movq %%mm2, %%mm4 \n\t" /* ABS(cur[x-refs-1+j] - cur[x+refs-1-j]) */\
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"psrlq $8, %%mm3 \n\t" /* ABS(cur[x-refs +j] - cur[x+refs -j]) */\
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"psrlq $16, %%mm4 \n\t" /* ABS(cur[x-refs+1+j] - cur[x+refs+1-j]) */\
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"punpcklbw %%mm7, %%mm2 \n\t"\
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"punpcklbw %%mm7, %%mm3 \n\t"\
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"punpcklbw %%mm7, %%mm4 \n\t"\
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"paddw %%mm3, %%mm2 \n\t"\
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"paddw %%mm4, %%mm2 \n\t" /* score */
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#define CHECK1 \
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"movq %%mm0, %%mm3 \n\t"\
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"pcmpgtw %%mm2, %%mm3 \n\t" /* if(score < spatial_score) */\
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"pminsw %%mm2, %%mm0 \n\t" /* spatial_score= score; */\
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"movq %%mm3, %%mm6 \n\t"\
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"pand %%mm3, %%mm5 \n\t"\
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"pandn %%mm1, %%mm3 \n\t"\
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"por %%mm5, %%mm3 \n\t"\
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"movq %%mm3, %%mm1 \n\t" /* spatial_pred= (cur[x-refs+j] + cur[x+refs-j])>>1; */
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#define CHECK2 /* pretend not to have checked dir=2 if dir=1 was bad.\
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hurts both quality and speed, but matches the C version. */\
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"paddw %[pw1], %%mm6 \n\t"\
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"psllw $14, %%mm6 \n\t"\
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"paddsw %%mm6, %%mm2 \n\t"\
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"movq %%mm0, %%mm3 \n\t"\
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"pcmpgtw %%mm2, %%mm3 \n\t"\
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"pminsw %%mm2, %%mm0 \n\t"\
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"pand %%mm3, %%mm5 \n\t"\
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"pandn %%mm1, %%mm3 \n\t"\
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"por %%mm5, %%mm3 \n\t"\
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"movq %%mm3, %%mm1 \n\t"
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void ff_yadif_filter_line_mmx(uint8_t *dst,
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uint8_t *prev, uint8_t *cur, uint8_t *next,
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int w, int refs, int parity, int mode)
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{
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static const uint64_t pw_1 = 0x0001000100010001ULL;
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static const uint64_t pb_1 = 0x0101010101010101ULL;
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uint64_t tmp0, tmp1, tmp2, tmp3;
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int x;
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#define FILTER\
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for(x=0; x<w; x+=4){\
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__asm__ volatile(\
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"pxor %%mm7, %%mm7 \n\t"\
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LOAD4("(%[cur],%[mrefs])", %%mm0) /* c = cur[x-refs] */\
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LOAD4("(%[cur],%[prefs])", %%mm1) /* e = cur[x+refs] */\
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LOAD4("(%["prev2"])", %%mm2) /* prev2[x] */\
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LOAD4("(%["next2"])", %%mm3) /* next2[x] */\
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"movq %%mm3, %%mm4 \n\t"\
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"paddw %%mm2, %%mm3 \n\t"\
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"psraw $1, %%mm3 \n\t" /* d = (prev2[x] + next2[x])>>1 */\
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"movq %%mm0, %[tmp0] \n\t" /* c */\
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"movq %%mm3, %[tmp1] \n\t" /* d */\
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"movq %%mm1, %[tmp2] \n\t" /* e */\
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"psubw %%mm4, %%mm2 \n\t"\
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PABS( %%mm4, %%mm2) /* temporal_diff0 */\
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LOAD4("(%[prev],%[mrefs])", %%mm3) /* prev[x-refs] */\
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LOAD4("(%[prev],%[prefs])", %%mm4) /* prev[x+refs] */\
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"psubw %%mm0, %%mm3 \n\t"\
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"psubw %%mm1, %%mm4 \n\t"\
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PABS( %%mm5, %%mm3)\
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PABS( %%mm5, %%mm4)\
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"paddw %%mm4, %%mm3 \n\t" /* temporal_diff1 */\
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"psrlw $1, %%mm2 \n\t"\
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"psrlw $1, %%mm3 \n\t"\
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"pmaxsw %%mm3, %%mm2 \n\t"\
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LOAD4("(%[next],%[mrefs])", %%mm3) /* next[x-refs] */\
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LOAD4("(%[next],%[prefs])", %%mm4) /* next[x+refs] */\
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"psubw %%mm0, %%mm3 \n\t"\
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"psubw %%mm1, %%mm4 \n\t"\
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PABS( %%mm5, %%mm3)\
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PABS( %%mm5, %%mm4)\
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"paddw %%mm4, %%mm3 \n\t" /* temporal_diff2 */\
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"psrlw $1, %%mm3 \n\t"\
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"pmaxsw %%mm3, %%mm2 \n\t"\
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"movq %%mm2, %[tmp3] \n\t" /* diff */\
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\
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"paddw %%mm0, %%mm1 \n\t"\
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"paddw %%mm0, %%mm0 \n\t"\
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"psubw %%mm1, %%mm0 \n\t"\
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"psrlw $1, %%mm1 \n\t" /* spatial_pred */\
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PABS( %%mm2, %%mm0) /* ABS(c-e) */\
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\
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"movq -1(%[cur],%[mrefs]), %%mm2 \n\t" /* cur[x-refs-1] */\
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"movq -1(%[cur],%[prefs]), %%mm3 \n\t" /* cur[x+refs-1] */\
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"movq %%mm2, %%mm4 \n\t"\
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"psubusb %%mm3, %%mm2 \n\t"\
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"psubusb %%mm4, %%mm3 \n\t"\
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"pmaxub %%mm3, %%mm2 \n\t"\
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"pshufw $9,%%mm2, %%mm3 \n\t"\
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"punpcklbw %%mm7, %%mm2 \n\t" /* ABS(cur[x-refs-1] - cur[x+refs-1]) */\
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"punpcklbw %%mm7, %%mm3 \n\t" /* ABS(cur[x-refs+1] - cur[x+refs+1]) */\
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"paddw %%mm2, %%mm0 \n\t"\
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"paddw %%mm3, %%mm0 \n\t"\
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"psubw %[pw1], %%mm0 \n\t" /* spatial_score */\
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\
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CHECK(-2,0)\
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CHECK1\
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CHECK(-3,1)\
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CHECK2\
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CHECK(0,-2)\
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CHECK1\
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CHECK(1,-3)\
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CHECK2\
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\
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/* if(p->mode<2) ... */\
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"movq %[tmp3], %%mm6 \n\t" /* diff */\
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"cmp $2, %[mode] \n\t"\
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"jge 1f \n\t"\
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LOAD4("(%["prev2"],%[mrefs],2)", %%mm2) /* prev2[x-2*refs] */\
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LOAD4("(%["next2"],%[mrefs],2)", %%mm4) /* next2[x-2*refs] */\
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LOAD4("(%["prev2"],%[prefs],2)", %%mm3) /* prev2[x+2*refs] */\
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LOAD4("(%["next2"],%[prefs],2)", %%mm5) /* next2[x+2*refs] */\
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"paddw %%mm4, %%mm2 \n\t"\
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"paddw %%mm5, %%mm3 \n\t"\
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"psrlw $1, %%mm2 \n\t" /* b */\
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"psrlw $1, %%mm3 \n\t" /* f */\
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"movq %[tmp0], %%mm4 \n\t" /* c */\
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"movq %[tmp1], %%mm5 \n\t" /* d */\
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"movq %[tmp2], %%mm7 \n\t" /* e */\
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"psubw %%mm4, %%mm2 \n\t" /* b-c */\
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"psubw %%mm7, %%mm3 \n\t" /* f-e */\
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"movq %%mm5, %%mm0 \n\t"\
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"psubw %%mm4, %%mm5 \n\t" /* d-c */\
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"psubw %%mm7, %%mm0 \n\t" /* d-e */\
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"movq %%mm2, %%mm4 \n\t"\
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"pminsw %%mm3, %%mm2 \n\t"\
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"pmaxsw %%mm4, %%mm3 \n\t"\
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"pmaxsw %%mm5, %%mm2 \n\t"\
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"pminsw %%mm5, %%mm3 \n\t"\
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"pmaxsw %%mm0, %%mm2 \n\t" /* max */\
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"pminsw %%mm0, %%mm3 \n\t" /* min */\
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"pxor %%mm4, %%mm4 \n\t"\
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"pmaxsw %%mm3, %%mm6 \n\t"\
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"psubw %%mm2, %%mm4 \n\t" /* -max */\
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"pmaxsw %%mm4, %%mm6 \n\t" /* diff= MAX3(diff, min, -max); */\
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"1: \n\t"\
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\
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"movq %[tmp1], %%mm2 \n\t" /* d */\
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"movq %%mm2, %%mm3 \n\t"\
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"psubw %%mm6, %%mm2 \n\t" /* d-diff */\
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"paddw %%mm6, %%mm3 \n\t" /* d+diff */\
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"pmaxsw %%mm2, %%mm1 \n\t"\
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"pminsw %%mm3, %%mm1 \n\t" /* d = clip(spatial_pred, d-diff, d+diff); */\
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"packuswb %%mm1, %%mm1 \n\t"\
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\
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:[tmp0]"=m"(tmp0),\
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[tmp1]"=m"(tmp1),\
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[tmp2]"=m"(tmp2),\
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[tmp3]"=m"(tmp3)\
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:[prev] "r"(prev),\
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[cur] "r"(cur),\
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[next] "r"(next),\
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[prefs]"r"((x86_reg)refs),\
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[mrefs]"r"((x86_reg)-refs),\
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[pw1] "m"(pw_1),\
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[pb1] "m"(pb_1),\
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[mode] "g"(mode)\
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);\
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__asm__ volatile("movd %%mm1, %0" :"=m"(*dst));\
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dst += 4;\
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prev+= 4;\
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cur += 4;\
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next+= 4;\
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}
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if (parity) {
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#define prev2 "prev"
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#define next2 "cur"
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FILTER
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#undef prev2
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#undef next2
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} else {
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#define prev2 "cur"
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#define next2 "next"
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FILTER
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#undef prev2
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#undef next2
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}
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}
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#undef LOAD4
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#undef PABS
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#undef CHECK
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#undef CHECK1
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#undef CHECK2
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#undef FILTER
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#endif /* HAVE_MMX */
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