/** * @file libavcodec/x86/vp6dsp_mmx.c * SSE2-optimized functions for the VP6 decoder * * Copyright (C) 2009 Zuxy Meng <zuxy.meng@gmail.com> * * 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 "libavutil/x86_cpu.h" #include "libavcodec/dsputil.h" #include "dsputil_mmx.h" #include "vp6dsp_sse2.h" #define DIAG4_SSE2(in1,in2,in3,in4) \ "movq "#in1"(%0), %%xmm0 \n\t" \ "movq "#in2"(%0), %%xmm1 \n\t" \ "punpcklbw %%xmm7, %%xmm0 \n\t" \ "punpcklbw %%xmm7, %%xmm1 \n\t" \ "pmullw %%xmm4, %%xmm0 \n\t" /* src[x-8 ] * biweight [0] */ \ "pmullw %%xmm5, %%xmm1 \n\t" /* src[x ] * biweight [1] */ \ "paddw %%xmm1, %%xmm0 \n\t" \ "movq "#in3"(%0), %%xmm1 \n\t" \ "movq "#in4"(%0), %%xmm2 \n\t" \ "punpcklbw %%xmm7, %%xmm1 \n\t" \ "punpcklbw %%xmm7, %%xmm2 \n\t" \ "pmullw %%xmm6, %%xmm1 \n\t" /* src[x+8 ] * biweight [2] */ \ "pmullw %%xmm3, %%xmm2 \n\t" /* src[x+16] * biweight [3] */ \ "paddw %%xmm2, %%xmm1 \n\t" \ "paddsw %%xmm1, %%xmm0 \n\t" \ "paddsw "MANGLE(ff_pw_64)", %%xmm0 \n\t" /* Add 64 */ \ "psraw $7, %%xmm0 \n\t" \ "packuswb %%xmm0, %%xmm0 \n\t" \ "movq %%xmm0, (%1) \n\t" \ void ff_vp6_filter_diag4_sse2(uint8_t *dst, uint8_t *src, int stride, const int16_t *h_weights,const int16_t *v_weights) { uint8_t tmp[8*11], *t = tmp; src -= stride; __asm__ volatile( "pxor %%xmm7, %%xmm7 \n\t" "movq %4, %%xmm3 \n\t" "pshuflw $0, %%xmm3, %%xmm4 \n\t" "punpcklqdq %%xmm4, %%xmm4 \n\t" "pshuflw $85, %%xmm3, %%xmm5 \n\t" "punpcklqdq %%xmm5, %%xmm5 \n\t" "pshuflw $170, %%xmm3, %%xmm6 \n\t" "punpcklqdq %%xmm6, %%xmm6 \n\t" "pshuflw $255, %%xmm3, %%xmm3 \n\t" "punpcklqdq %%xmm3, %%xmm3 \n\t" "1: \n\t" DIAG4_SSE2(-1,0,1,2) "add $8, %1 \n\t" "add %2, %0 \n\t" "decl %3 \n\t" "jnz 1b \n\t" : "+r"(src), "+r"(t) : "g"((x86_reg)stride), "r"(11), "m"(*(const int64_t*)h_weights) : "memory"); t = tmp + 8; __asm__ volatile( "movq %4, %%xmm3 \n\t" "pshuflw $0, %%xmm3, %%xmm4 \n\t" "punpcklqdq %%xmm4, %%xmm4 \n\t" "pshuflw $85, %%xmm3, %%xmm5 \n\t" "punpcklqdq %%xmm5, %%xmm5 \n\t" "pshuflw $170, %%xmm3, %%xmm6 \n\t" "punpcklqdq %%xmm6, %%xmm6 \n\t" "pshuflw $255, %%xmm3, %%xmm3 \n\t" "punpcklqdq %%xmm3, %%xmm3 \n\t" "1: \n\t" DIAG4_SSE2(-8,0,8,16) "add $8, %0 \n\t" "add %2, %1 \n\t" "decl %3 \n\t" "jnz 1b \n\t" : "+r"(t), "+r"(dst) : "g"((x86_reg)stride), "r"(8), "m"(*(const int64_t*)v_weights) : "memory"); }