| /* |
| * 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 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 |
| */ |
| |
| #include <stddef.h> |
| #include <stdint.h> |
| |
| #include "config.h" |
| #include "dsputil_x86.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 */ |
