| /** |
| * @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"); |
| } |