mirror of
https://github.com/FFmpeg/FFmpeg.git
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99 lines
4.4 KiB
C
99 lines
4.4 KiB
C
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/**
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* @file libavcodec/x86/vp6dsp_mmx.c
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* SSE2-optimized functions for the VP6 decoder
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*
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* Copyright (C) 2009 Zuxy Meng <zuxy.meng@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_sse2.h"
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#define DIAG4_SSE2(in1,in2,in3,in4) \
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"movq "#in1"(%0), %%xmm0 \n\t" \
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"movq "#in2"(%0), %%xmm1 \n\t" \
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"punpcklbw %%xmm7, %%xmm0 \n\t" \
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"punpcklbw %%xmm7, %%xmm1 \n\t" \
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"pmullw %%xmm4, %%xmm0 \n\t" /* src[x-8 ] * biweight [0] */ \
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"pmullw %%xmm5, %%xmm1 \n\t" /* src[x ] * biweight [1] */ \
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"paddw %%xmm1, %%xmm0 \n\t" \
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"movq "#in3"(%0), %%xmm1 \n\t" \
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"movq "#in4"(%0), %%xmm2 \n\t" \
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"punpcklbw %%xmm7, %%xmm1 \n\t" \
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"punpcklbw %%xmm7, %%xmm2 \n\t" \
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"pmullw %%xmm6, %%xmm1 \n\t" /* src[x+8 ] * biweight [2] */ \
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"pmullw %%xmm3, %%xmm2 \n\t" /* src[x+16] * biweight [3] */ \
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"paddw %%xmm2, %%xmm1 \n\t" \
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"paddsw %%xmm1, %%xmm0 \n\t" \
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"paddsw "MANGLE(ff_pw_64)", %%xmm0 \n\t" /* Add 64 */ \
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"psraw $7, %%xmm0 \n\t" \
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"packuswb %%xmm0, %%xmm0 \n\t" \
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"movq %%xmm0, (%1) \n\t" \
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void ff_vp6_filter_diag4_sse2(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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src -= stride;
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__asm__ volatile(
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"pxor %%xmm7, %%xmm7 \n\t"
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"movq %4, %%xmm3 \n\t"
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"pshuflw $0, %%xmm3, %%xmm4 \n\t"
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"punpcklqdq %%xmm4, %%xmm4 \n\t"
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"pshuflw $85, %%xmm3, %%xmm5 \n\t"
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"punpcklqdq %%xmm5, %%xmm5 \n\t"
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"pshuflw $170, %%xmm3, %%xmm6 \n\t"
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"punpcklqdq %%xmm6, %%xmm6 \n\t"
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"pshuflw $255, %%xmm3, %%xmm3 \n\t"
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"punpcklqdq %%xmm3, %%xmm3 \n\t"
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"1: \n\t"
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DIAG4_SSE2(-1,0,1,2)
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"add $8, %1 \n\t"
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"add %2, %0 \n\t"
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"decl %3 \n\t"
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"jnz 1b \n\t"
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: "+r"(src), "+r"(t)
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: "g"((x86_reg)stride), "r"(11), "m"(*(const int64_t*)h_weights)
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: "memory");
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t = tmp + 8;
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__asm__ volatile(
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"movq %4, %%xmm3 \n\t"
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"pshuflw $0, %%xmm3, %%xmm4 \n\t"
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"punpcklqdq %%xmm4, %%xmm4 \n\t"
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"pshuflw $85, %%xmm3, %%xmm5 \n\t"
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"punpcklqdq %%xmm5, %%xmm5 \n\t"
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"pshuflw $170, %%xmm3, %%xmm6 \n\t"
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"punpcklqdq %%xmm6, %%xmm6 \n\t"
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"pshuflw $255, %%xmm3, %%xmm3 \n\t"
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"punpcklqdq %%xmm3, %%xmm3 \n\t"
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"1: \n\t"
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DIAG4_SSE2(-8,0,8,16)
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"add $8, %0 \n\t"
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"add %2, %1 \n\t"
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"decl %3 \n\t"
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"jnz 1b \n\t"
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: "+r"(t), "+r"(dst)
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: "g"((x86_reg)stride), "r"(8), "m"(*(const int64_t*)v_weights)
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: "memory");
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}
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