📄 dsputil_mmx_avg.h
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/* * DSP utils : average functions are compiled twice for 3dnow/mmx2 * Copyright (c) 2000, 2001 Fabrice Bellard. * Copyright (c) 2002-2004 Michael Niedermayer * * MMX optimization by Nick Kurshev <nickols_k@mail.ru> * mostly rewritten by Michael Niedermayer <michaelni@gmx.at> * and improved by Zdenek Kabelac <kabi@users.sf.net> * * This file is part of FFmpeg. * * FFmpeg 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. * * FFmpeg 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 FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *//* This header intentionally has no multiple inclusion guards. It is meant to * be included multiple times and generates different code depending on the * value of certain #defines. *//* 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_pixels8_x2)(uint8_t *block, const uint8_t *pixels, int line_size, int h){ __asm __volatile( "lea (%3, %3), %%"REG_a" \n\t" "1: \n\t" "movq (%1), %%mm0 \n\t" "movq (%1, %3), %%mm1 \n\t" PAVGB" 1(%1), %%mm0 \n\t" PAVGB" 1(%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" PAVGB" 1(%1), %%mm0 \n\t" PAVGB" 1(%1, %3), %%mm1 \n\t" "add %%"REG_a", %1 \n\t" "movq %%mm0, (%2) \n\t" "movq %%mm1, (%2, %3) \n\t" "add %%"REG_a", %2 \n\t" "subl $4, %0 \n\t" "jnz 1b \n\t" :"+g"(h), "+S"(pixels), "+D"(block) :"r" ((long)line_size) :"%"REG_a, "memory");}static void DEF(put_pixels4_l2)(uint8_t *dst, uint8_t *src1, uint8_t *src2, int dstStride, int src1Stride, int h){ __asm __volatile( "testl $1, %0 \n\t" " jz 1f \n\t" "movd (%1), %%mm0 \n\t" "movd (%2), %%mm1 \n\t" "add %4, %1 \n\t" "add $4, %2 \n\t" PAVGB" %%mm1, %%mm0 \n\t" "movd %%mm0, (%3) \n\t" "add %5, %3 \n\t" "decl %0 \n\t" "1: \n\t" "movd (%1), %%mm0 \n\t" "add %4, %1 \n\t" "movd (%1), %%mm1 \n\t" "movd (%2), %%mm2 \n\t" "movd 4(%2), %%mm3 \n\t" "add %4, %1 \n\t" PAVGB" %%mm2, %%mm0 \n\t" PAVGB" %%mm3, %%mm1 \n\t" "movd %%mm0, (%3) \n\t" "add %5, %3 \n\t" "movd %%mm1, (%3) \n\t" "add %5, %3 \n\t" "movd (%1), %%mm0 \n\t" "add %4, %1 \n\t" "movd (%1), %%mm1 \n\t" "movd 8(%2), %%mm2 \n\t" "movd 12(%2), %%mm3 \n\t" "add %4, %1 \n\t" PAVGB" %%mm2, %%mm0 \n\t" PAVGB" %%mm3, %%mm1 \n\t" "movd %%mm0, (%3) \n\t" "add %5, %3 \n\t" "movd %%mm1, (%3) \n\t" "add %5, %3 \n\t" "add $16, %2 \n\t" "subl $4, %0 \n\t" "jnz 1b \n\t"#ifdef PIC //Note "+bm" and "+mb" are buggy too (with gcc 3.2.2 at least) and cannot be used :"+m"(h), "+a"(src1), "+c"(src2), "+d"(dst)#else :"+b"(h), "+a"(src1), "+c"(src2), "+d"(dst)#endif :"S"((long)src1Stride), "D"((long)dstStride) :"memory");}static void DEF(put_pixels8_l2)(uint8_t *dst, uint8_t *src1, uint8_t *src2, int dstStride, int src1Stride, int h){ __asm __volatile( "testl $1, %0 \n\t" " jz 1f \n\t" "movq (%1), %%mm0 \n\t" "movq (%2), %%mm1 \n\t" "add %4, %1 \n\t" "add $8, %2 \n\t" PAVGB" %%mm1, %%mm0 \n\t" "movq %%mm0, (%3) \n\t" "add %5, %3 \n\t" "decl %0 \n\t" "1: \n\t" "movq (%1), %%mm0 \n\t" "add %4, %1 \n\t" "movq (%1), %%mm1 \n\t" "add %4, %1 \n\t" PAVGB" (%2), %%mm0 \n\t" PAVGB" 8(%2), %%mm1 \n\t" "movq %%mm0, (%3) \n\t" "add %5, %3 \n\t" "movq %%mm1, (%3) \n\t" "add %5, %3 \n\t" "movq (%1), %%mm0 \n\t" "add %4, %1 \n\t" "movq (%1), %%mm1 \n\t" "add %4, %1 \n\t" PAVGB" 16(%2), %%mm0 \n\t" PAVGB" 24(%2), %%mm1 \n\t" "movq %%mm0, (%3) \n\t" "add %5, %3 \n\t" "movq %%mm1, (%3) \n\t" "add %5, %3 \n\t" "add $32, %2 \n\t" "subl $4, %0 \n\t" "jnz 1b \n\t"#ifdef PIC //Note "+bm" and "+mb" are buggy too (with gcc 3.2.2 at least) and cannot be used :"+m"(h), "+a"(src1), "+c"(src2), "+d"(dst)#else :"+b"(h), "+a"(src1), "+c"(src2), "+d"(dst)#endif :"S"((long)src1Stride), "D"((long)dstStride) :"memory");//the following should be used, though better not with gcc .../* :"+g"(h), "+r"(src1), "+r"(src2), "+r"(dst) :"r"(src1Stride), "r"(dstStride) :"memory");*/}static void DEF(put_no_rnd_pixels8_l2)(uint8_t *dst, uint8_t *src1, uint8_t *src2, int dstStride, int src1Stride, int h){ __asm __volatile( "pcmpeqb %%mm6, %%mm6 \n\t" "testl $1, %0 \n\t" " jz 1f \n\t" "movq (%1), %%mm0 \n\t" "movq (%2), %%mm1 \n\t" "add %4, %1 \n\t" "add $8, %2 \n\t" "pxor %%mm6, %%mm0 \n\t" "pxor %%mm6, %%mm1 \n\t" PAVGB" %%mm1, %%mm0 \n\t" "pxor %%mm6, %%mm0 \n\t" "movq %%mm0, (%3) \n\t" "add %5, %3 \n\t" "decl %0 \n\t" "1: \n\t" "movq (%1), %%mm0 \n\t" "add %4, %1 \n\t" "movq (%1), %%mm1 \n\t" "add %4, %1 \n\t" "movq (%2), %%mm2 \n\t" "movq 8(%2), %%mm3 \n\t" "pxor %%mm6, %%mm0 \n\t" "pxor %%mm6, %%mm1 \n\t" "pxor %%mm6, %%mm2 \n\t" "pxor %%mm6, %%mm3 \n\t" PAVGB" %%mm2, %%mm0 \n\t" PAVGB" %%mm3, %%mm1 \n\t" "pxor %%mm6, %%mm0 \n\t" "pxor %%mm6, %%mm1 \n\t" "movq %%mm0, (%3) \n\t" "add %5, %3 \n\t" "movq %%mm1, (%3) \n\t" "add %5, %3 \n\t" "movq (%1), %%mm0 \n\t" "add %4, %1 \n\t" "movq (%1), %%mm1 \n\t" "add %4, %1 \n\t" "movq 16(%2), %%mm2 \n\t" "movq 24(%2), %%mm3 \n\t" "pxor %%mm6, %%mm0 \n\t" "pxor %%mm6, %%mm1 \n\t" "pxor %%mm6, %%mm2 \n\t" "pxor %%mm6, %%mm3 \n\t" PAVGB" %%mm2, %%mm0 \n\t" PAVGB" %%mm3, %%mm1 \n\t" "pxor %%mm6, %%mm0 \n\t" "pxor %%mm6, %%mm1 \n\t" "movq %%mm0, (%3) \n\t" "add %5, %3 \n\t" "movq %%mm1, (%3) \n\t" "add %5, %3 \n\t" "add $32, %2 \n\t" "subl $4, %0 \n\t" "jnz 1b \n\t"#ifdef PIC //Note "+bm" and "+mb" are buggy too (with gcc 3.2.2 at least) and cannot be used :"+m"(h), "+a"(src1), "+c"(src2), "+d"(dst)#else :"+b"(h), "+a"(src1), "+c"(src2), "+d"(dst)#endif :"S"((long)src1Stride), "D"((long)dstStride) :"memory");//the following should be used, though better not with gcc .../* :"+g"(h), "+r"(src1), "+r"(src2), "+r"(dst) :"r"(src1Stride), "r"(dstStride) :"memory");*/}static void DEF(avg_pixels4_l2)(uint8_t *dst, uint8_t *src1, uint8_t *src2, int dstStride, int src1Stride, int h){ __asm __volatile( "testl $1, %0 \n\t" " jz 1f \n\t" "movd (%1), %%mm0 \n\t" "movd (%2), %%mm1 \n\t" "add %4, %1 \n\t" "add $4, %2 \n\t" PAVGB" %%mm1, %%mm0 \n\t" PAVGB" (%3), %%mm0 \n\t" "movd %%mm0, (%3) \n\t" "add %5, %3 \n\t" "decl %0 \n\t" "1: \n\t" "movd (%1), %%mm0 \n\t" "add %4, %1 \n\t" "movd (%1), %%mm1 \n\t" "add %4, %1 \n\t" PAVGB" (%2), %%mm0 \n\t" PAVGB" 4(%2), %%mm1 \n\t" PAVGB" (%3), %%mm0 \n\t" "movd %%mm0, (%3) \n\t" "add %5, %3 \n\t" PAVGB" (%3), %%mm1 \n\t" "movd %%mm1, (%3) \n\t" "add %5, %3 \n\t" "movd (%1), %%mm0 \n\t" "add %4, %1 \n\t" "movd (%1), %%mm1 \n\t" "add %4, %1 \n\t" PAVGB" 8(%2), %%mm0 \n\t" PAVGB" 12(%2), %%mm1 \n\t" PAVGB" (%3), %%mm0 \n\t" "movd %%mm0, (%3) \n\t" "add %5, %3 \n\t" PAVGB" (%3), %%mm1 \n\t" "movd %%mm1, (%3) \n\t" "add %5, %3 \n\t" "add $16, %2 \n\t" "subl $4, %0 \n\t" "jnz 1b \n\t"#ifdef PIC //Note "+bm" and "+mb" are buggy too (with gcc 3.2.2 at least) and cannot be used :"+m"(h), "+a"(src1), "+c"(src2), "+d"(dst)#else :"+b"(h), "+a"(src1), "+c"(src2), "+d"(dst)#endif :"S"((long)src1Stride), "D"((long)dstStride) :"memory");}static void DEF(avg_pixels8_l2)(uint8_t *dst, uint8_t *src1, uint8_t *src2, int dstStride, int src1Stride, int h){ __asm __volatile( "testl $1, %0 \n\t" " jz 1f \n\t" "movq (%1), %%mm0 \n\t" "movq (%2), %%mm1 \n\t" "add %4, %1 \n\t" "add $8, %2 \n\t" PAVGB" %%mm1, %%mm0 \n\t" PAVGB" (%3), %%mm0 \n\t" "movq %%mm0, (%3) \n\t" "add %5, %3 \n\t" "decl %0 \n\t" "1: \n\t" "movq (%1), %%mm0 \n\t" "add %4, %1 \n\t"⌨️ 快捷键说明
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