/* * 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 "fpel.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 */