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108 lines
5.2 KiB
108 lines
5.2 KiB
/** |
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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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