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6af3c226c3
original patch by Sebastien Lucas sebastien.lucas _at_ gmail _dot_ com Originally committed as revision 17194 to svn://svn.ffmpeg.org/ffmpeg/trunk
109 lines
5.2 KiB
C
109 lines
5.2 KiB
C
/**
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* @file libavcodec/x86/vp6dsp_mmx.c
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* MMX-optimized functions for the VP6 decoder
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*
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* Copyright (C) 2009 Sebastien Lucas <sebastien.lucas@gmail.com>
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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
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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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* 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 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 FFmpeg; 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 "libavutil/x86_cpu.h"
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#include "libavcodec/dsputil.h"
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#include "dsputil_mmx.h"
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#include "vp6dsp_mmx.h"
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#define DIAG4_MMX(in1,in2,in3,in4) \
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"movq "#in1"(%0), %%mm0 \n\t" \
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"movq "#in2"(%0), %%mm1 \n\t" \
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"movq %%mm0, %%mm3 \n\t" \
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"movq %%mm1, %%mm4 \n\t" \
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"punpcklbw %%mm7, %%mm0 \n\t" \
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"punpcklbw %%mm7, %%mm1 \n\t" \
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"punpckhbw %%mm7, %%mm3 \n\t" \
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"punpckhbw %%mm7, %%mm4 \n\t" \
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"pmullw 0(%2), %%mm0 \n\t" /* src[x-8 ] * biweight [0] */ \
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"pmullw 8(%2), %%mm1 \n\t" /* src[x ] * biweight [1] */ \
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"pmullw 0(%2), %%mm3 \n\t" /* src[x-8 ] * biweight [0] */ \
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"pmullw 8(%2), %%mm4 \n\t" /* src[x ] * biweight [1] */ \
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"paddw %%mm1, %%mm0 \n\t" \
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"paddw %%mm4, %%mm3 \n\t" \
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"movq "#in3"(%0), %%mm1 \n\t" \
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"movq "#in4"(%0), %%mm2 \n\t" \
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"movq %%mm1, %%mm4 \n\t" \
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"movq %%mm2, %%mm5 \n\t" \
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"punpcklbw %%mm7, %%mm1 \n\t" \
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"punpcklbw %%mm7, %%mm2 \n\t" \
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"punpckhbw %%mm7, %%mm4 \n\t" \
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"punpckhbw %%mm7, %%mm5 \n\t" \
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"pmullw 16(%2), %%mm1 \n\t" /* src[x+8 ] * biweight [2] */ \
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"pmullw 24(%2), %%mm2 \n\t" /* src[x+16] * biweight [3] */ \
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"pmullw 16(%2), %%mm4 \n\t" /* src[x+8 ] * biweight [2] */ \
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"pmullw 24(%2), %%mm5 \n\t" /* src[x+16] * biweight [3] */ \
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"paddw %%mm2, %%mm1 \n\t" \
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"paddw %%mm5, %%mm4 \n\t" \
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"paddsw %%mm1, %%mm0 \n\t" \
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"paddsw %%mm4, %%mm3 \n\t" \
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"paddsw %%mm6, %%mm0 \n\t" /* Add 64 */ \
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"paddsw %%mm6, %%mm3 \n\t" /* Add 64 */ \
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"psraw $7, %%mm0 \n\t" \
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"psraw $7, %%mm3 \n\t" \
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"packuswb %%mm3, %%mm0 \n\t" \
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"movq %%mm0, (%1) \n\t"
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void ff_vp6_filter_diag4_mmx(uint8_t *dst, uint8_t *src, int stride,
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const int16_t *h_weights, const int16_t *v_weights)
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{
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uint8_t tmp[8*11], *t = tmp;
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int16_t weights[4*4];
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int i;
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src -= stride;
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for (i=0; i<4*4; i++)
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weights[i] = h_weights[i>>2];
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__asm__ volatile(
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"pxor %%mm7, %%mm7 \n\t"
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"movq "MANGLE(ff_pw_64)", %%mm6 \n\t"
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"1: \n\t"
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DIAG4_MMX(-1,0,1,2)
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"add $8, %1 \n\t"
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"add %3, %0 \n\t"
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"decl %4 \n\t"
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"jnz 1b \n\t"
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: "+r"(src), "+r"(t)
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: "r"(weights), "r"((x86_reg)stride), "r"(11)
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: "memory");
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t = tmp + 8;
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for (i=0; i<4*4; i++)
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weights[i] = v_weights[i>>2];
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__asm__ volatile(
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"pxor %%mm7, %%mm7 \n\t"
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"movq "MANGLE(ff_pw_64)", %%mm6 \n\t"
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"1: \n\t"
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DIAG4_MMX(-8,0,8,16)
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"add $8, %0 \n\t"
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"add %3, %1 \n\t"
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"decl %4 \n\t"
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"jnz 1b \n\t"
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: "+r"(t), "+r"(dst)
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: "r"(weights), "r"((x86_reg)stride), "r"(8)
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: "memory");
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}
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