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https://github.com/FFmpeg/FFmpeg.git
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103 lines
3.7 KiB
C
103 lines
3.7 KiB
C
/*
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* DSP utils : QNS functions are compiled 3 times for mmx/3dnow/ssse3
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* Copyright (c) 2004 Michael Niedermayer
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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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* MMX optimization by Michael Niedermayer <michaelni@gmx.at>
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* 3DNow! and SSSE3 optimization by Zuxy Meng <zuxy.meng@gmail.com>
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*/
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#define MAX_ABS (512 >> (SCALE_OFFSET>0 ? SCALE_OFFSET : 0))
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static int DEF(try_8x8basis)(int16_t rem[64], int16_t weight[64], int16_t basis[64], int scale)
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{
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long i=0;
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assert(FFABS(scale) < MAX_ABS);
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scale<<= 16 + SCALE_OFFSET - BASIS_SHIFT + RECON_SHIFT;
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SET_RND(mm6);
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asm volatile(
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"pxor %%mm7, %%mm7 \n\t"
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"movd %4, %%mm5 \n\t"
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"punpcklwd %%mm5, %%mm5 \n\t"
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"punpcklwd %%mm5, %%mm5 \n\t"
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ASMALIGN(4)
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"1: \n\t"
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"movq (%1, %0), %%mm0 \n\t"
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"movq 8(%1, %0), %%mm1 \n\t"
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PMULHRW(%%mm0, %%mm1, %%mm5, %%mm6)
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"paddw (%2, %0), %%mm0 \n\t"
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"paddw 8(%2, %0), %%mm1 \n\t"
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"psraw $6, %%mm0 \n\t"
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"psraw $6, %%mm1 \n\t"
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"pmullw (%3, %0), %%mm0 \n\t"
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"pmullw 8(%3, %0), %%mm1 \n\t"
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"pmaddwd %%mm0, %%mm0 \n\t"
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"pmaddwd %%mm1, %%mm1 \n\t"
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"paddd %%mm1, %%mm0 \n\t"
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"psrld $4, %%mm0 \n\t"
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"paddd %%mm0, %%mm7 \n\t"
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"add $16, %0 \n\t"
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"cmp $128, %0 \n\t" //FIXME optimize & bench
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" jb 1b \n\t"
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PHADDD(%%mm7, %%mm6)
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"psrld $2, %%mm7 \n\t"
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"movd %%mm7, %0 \n\t"
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: "+r" (i)
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: "r"(basis), "r"(rem), "r"(weight), "g"(scale)
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);
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return i;
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}
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static void DEF(add_8x8basis)(int16_t rem[64], int16_t basis[64], int scale)
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{
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long i=0;
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if(FFABS(scale) < MAX_ABS){
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scale<<= 16 + SCALE_OFFSET - BASIS_SHIFT + RECON_SHIFT;
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SET_RND(mm6);
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asm volatile(
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"movd %3, %%mm5 \n\t"
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"punpcklwd %%mm5, %%mm5 \n\t"
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"punpcklwd %%mm5, %%mm5 \n\t"
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ASMALIGN(4)
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"1: \n\t"
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"movq (%1, %0), %%mm0 \n\t"
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"movq 8(%1, %0), %%mm1 \n\t"
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PMULHRW(%%mm0, %%mm1, %%mm5, %%mm6)
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"paddw (%2, %0), %%mm0 \n\t"
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"paddw 8(%2, %0), %%mm1 \n\t"
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"movq %%mm0, (%2, %0) \n\t"
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"movq %%mm1, 8(%2, %0) \n\t"
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"add $16, %0 \n\t"
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"cmp $128, %0 \n\t" // FIXME optimize & bench
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" jb 1b \n\t"
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: "+r" (i)
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: "r"(basis), "r"(rem), "g"(scale)
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);
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}else{
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for(i=0; i<8*8; i++){
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rem[i] += (basis[i]*scale + (1<<(BASIS_SHIFT - RECON_SHIFT-1)))>>(BASIS_SHIFT - RECON_SHIFT);
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}
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}
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}
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