1/** 2 * @file 3 * SSE2-optimized functions for the VP6 decoder 4 * 5 * Copyright (C) 2009 Zuxy Meng <zuxy.meng@gmail.com> 6 * 7 * This file is part of FFmpeg. 8 * 9 * FFmpeg is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU Lesser General Public 11 * License as published by the Free Software Foundation; either 12 * version 2.1 of the License, or (at your option) any later version. 13 * 14 * FFmpeg is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 17 * Lesser General Public License for more details. 18 * 19 * You should have received a copy of the GNU Lesser General Public 20 * License along with FFmpeg; if not, write to the Free Software 21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 22 */ 23 24#include "libavutil/x86_cpu.h" 25#include "libavcodec/dsputil.h" 26#include "dsputil_mmx.h" 27#include "vp6dsp_sse2.h" 28 29#define DIAG4_SSE2(in1,in2,in3,in4) \ 30 "movq "#in1"(%0), %%xmm0 \n\t" \ 31 "movq "#in2"(%0), %%xmm1 \n\t" \ 32 "punpcklbw %%xmm7, %%xmm0 \n\t" \ 33 "punpcklbw %%xmm7, %%xmm1 \n\t" \ 34 "pmullw %%xmm4, %%xmm0 \n\t" /* src[x-8 ] * biweight [0] */ \ 35 "pmullw %%xmm5, %%xmm1 \n\t" /* src[x ] * biweight [1] */ \ 36 "paddw %%xmm1, %%xmm0 \n\t" \ 37 "movq "#in3"(%0), %%xmm1 \n\t" \ 38 "movq "#in4"(%0), %%xmm2 \n\t" \ 39 "punpcklbw %%xmm7, %%xmm1 \n\t" \ 40 "punpcklbw %%xmm7, %%xmm2 \n\t" \ 41 "pmullw %%xmm6, %%xmm1 \n\t" /* src[x+8 ] * biweight [2] */ \ 42 "pmullw %%xmm3, %%xmm2 \n\t" /* src[x+16] * biweight [3] */ \ 43 "paddw %%xmm2, %%xmm1 \n\t" \ 44 "paddsw %%xmm1, %%xmm0 \n\t" \ 45 "paddsw "MANGLE(ff_pw_64)", %%xmm0 \n\t" /* Add 64 */ \ 46 "psraw $7, %%xmm0 \n\t" \ 47 "packuswb %%xmm0, %%xmm0 \n\t" \ 48 "movq %%xmm0, (%1) \n\t" \ 49 50void ff_vp6_filter_diag4_sse2(uint8_t *dst, uint8_t *src, int stride, 51 const int16_t *h_weights,const int16_t *v_weights) 52{ 53 uint8_t tmp[8*11], *t = tmp; 54 src -= stride; 55 56 __asm__ volatile( 57 "pxor %%xmm7, %%xmm7 \n\t" 58 "movq %4, %%xmm3 \n\t" 59 "pshuflw $0, %%xmm3, %%xmm4 \n\t" 60 "punpcklqdq %%xmm4, %%xmm4 \n\t" 61 "pshuflw $85, %%xmm3, %%xmm5 \n\t" 62 "punpcklqdq %%xmm5, %%xmm5 \n\t" 63 "pshuflw $170, %%xmm3, %%xmm6 \n\t" 64 "punpcklqdq %%xmm6, %%xmm6 \n\t" 65 "pshuflw $255, %%xmm3, %%xmm3 \n\t" 66 "punpcklqdq %%xmm3, %%xmm3 \n\t" 67 "1: \n\t" 68 DIAG4_SSE2(-1,0,1,2) 69 "add $8, %1 \n\t" 70 "add %2, %0 \n\t" 71 "decl %3 \n\t" 72 "jnz 1b \n\t" 73 : "+r"(src), "+r"(t) 74 : "g"((x86_reg)stride), "r"(11), "m"(*(const int64_t*)h_weights) 75 : "memory"); 76 77 t = tmp + 8; 78 79 __asm__ volatile( 80 "movq %4, %%xmm3 \n\t" 81 "pshuflw $0, %%xmm3, %%xmm4 \n\t" 82 "punpcklqdq %%xmm4, %%xmm4 \n\t" 83 "pshuflw $85, %%xmm3, %%xmm5 \n\t" 84 "punpcklqdq %%xmm5, %%xmm5 \n\t" 85 "pshuflw $170, %%xmm3, %%xmm6 \n\t" 86 "punpcklqdq %%xmm6, %%xmm6 \n\t" 87 "pshuflw $255, %%xmm3, %%xmm3 \n\t" 88 "punpcklqdq %%xmm3, %%xmm3 \n\t" 89 "1: \n\t" 90 DIAG4_SSE2(-8,0,8,16) 91 "add $8, %0 \n\t" 92 "add %2, %1 \n\t" 93 "decl %3 \n\t" 94 "jnz 1b \n\t" 95 : "+r"(t), "+r"(dst) 96 : "g"((x86_reg)stride), "r"(8), "m"(*(const int64_t*)v_weights) 97 : "memory"); 98} 99