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140 lines
4.8 KiB
140 lines
4.8 KiB
/* |
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* MMX-optimized avg/put pixel routines |
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* |
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* Copyright (c) 2000, 2001 Fabrice Bellard |
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* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at> |
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* |
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav 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 GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include <stddef.h> |
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#include <stdint.h> |
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#include "config.h" |
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#include "fpel.h" |
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#include "inline_asm.h" |
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#if HAVE_MMX_INLINE |
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// in case more speed is needed - unrolling would certainly help |
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void ff_avg_pixels8_mmx(uint8_t *block, const uint8_t *pixels, |
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ptrdiff_t line_size, int h) |
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{ |
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MOVQ_BFE(mm6); |
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JUMPALIGN(); |
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do { |
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__asm__ volatile( |
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"movq %0, %%mm0 \n\t" |
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"movq %1, %%mm1 \n\t" |
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PAVGB_MMX(%%mm0, %%mm1, %%mm2, %%mm6) |
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"movq %%mm2, %0 \n\t" |
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:"+m"(*block) |
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:"m"(*pixels) |
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:"memory"); |
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pixels += line_size; |
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block += line_size; |
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} |
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while (--h); |
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} |
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void ff_avg_pixels16_mmx(uint8_t *block, const uint8_t *pixels, |
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ptrdiff_t line_size, int h) |
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{ |
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MOVQ_BFE(mm6); |
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JUMPALIGN(); |
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do { |
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__asm__ volatile( |
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"movq %0, %%mm0 \n\t" |
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"movq %1, %%mm1 \n\t" |
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PAVGB_MMX(%%mm0, %%mm1, %%mm2, %%mm6) |
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"movq %%mm2, %0 \n\t" |
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"movq 8%0, %%mm0 \n\t" |
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"movq 8%1, %%mm1 \n\t" |
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PAVGB_MMX(%%mm0, %%mm1, %%mm2, %%mm6) |
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"movq %%mm2, 8%0 \n\t" |
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:"+m"(*block) |
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:"m"(*pixels) |
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:"memory"); |
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pixels += line_size; |
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block += line_size; |
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} |
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while (--h); |
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} |
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void ff_put_pixels8_mmx(uint8_t *block, const uint8_t *pixels, |
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ptrdiff_t line_size, int h) |
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{ |
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__asm__ volatile ( |
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"lea (%3, %3), %%"REG_a" \n\t" |
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".p2align 3 \n\t" |
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"1: \n\t" |
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"movq (%1 ), %%mm0 \n\t" |
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"movq (%1, %3), %%mm1 \n\t" |
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"movq %%mm0, (%2) \n\t" |
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"movq %%mm1, (%2, %3) \n\t" |
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"add %%"REG_a", %1 \n\t" |
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"add %%"REG_a", %2 \n\t" |
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"movq (%1 ), %%mm0 \n\t" |
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"movq (%1, %3), %%mm1 \n\t" |
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"movq %%mm0, (%2) \n\t" |
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"movq %%mm1, (%2, %3) \n\t" |
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"add %%"REG_a", %1 \n\t" |
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"add %%"REG_a", %2 \n\t" |
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"subl $4, %0 \n\t" |
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"jnz 1b \n\t" |
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: "+g"(h), "+r"(pixels), "+r"(block) |
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: "r"((x86_reg)line_size) |
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: "%"REG_a, "memory" |
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); |
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} |
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void ff_put_pixels16_mmx(uint8_t *block, const uint8_t *pixels, |
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ptrdiff_t line_size, int h) |
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{ |
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__asm__ volatile ( |
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"lea (%3, %3), %%"REG_a" \n\t" |
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".p2align 3 \n\t" |
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"1: \n\t" |
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"movq (%1 ), %%mm0 \n\t" |
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"movq 8(%1 ), %%mm4 \n\t" |
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"movq (%1, %3), %%mm1 \n\t" |
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"movq 8(%1, %3), %%mm5 \n\t" |
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"movq %%mm0, (%2) \n\t" |
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"movq %%mm4, 8(%2) \n\t" |
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"movq %%mm1, (%2, %3) \n\t" |
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"movq %%mm5, 8(%2, %3) \n\t" |
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"add %%"REG_a", %1 \n\t" |
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"add %%"REG_a", %2 \n\t" |
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"movq (%1 ), %%mm0 \n\t" |
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"movq 8(%1 ), %%mm4 \n\t" |
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"movq (%1, %3), %%mm1 \n\t" |
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"movq 8(%1, %3), %%mm5 \n\t" |
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"movq %%mm0, (%2) \n\t" |
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"movq %%mm4, 8(%2) \n\t" |
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"movq %%mm1, (%2, %3) \n\t" |
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"movq %%mm5, 8(%2, %3) \n\t" |
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"add %%"REG_a", %1 \n\t" |
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"add %%"REG_a", %2 \n\t" |
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"subl $4, %0 \n\t" |
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"jnz 1b \n\t" |
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: "+g"(h), "+r"(pixels), "+r"(block) |
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: "r"((x86_reg)line_size) |
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: "%"REG_a, "memory" |
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); |
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} |
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#endif /* HAVE_MMX_INLINE */
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