mirror of https://github.com/FFmpeg/FFmpeg.git
Originally committed as revision 11244 to svn://svn.ffmpeg.org/ffmpeg/trunkpull/126/head
Aurelien Jacobs
17 years ago
parent
bcfe2ba02c
commit
407c50a024
3 changed files with 146 additions and 120 deletions
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/*
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* MMX optimized FLAC DSP utils |
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* Copyright (c) 2007 Loren Merritt |
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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 "dsputil_mmx.h" |
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static void apply_welch_window_sse2(const int32_t *data, int len, double *w_data) |
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{ |
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double c = 2.0 / (len-1.0); |
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int n2 = len>>1; |
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long i = -n2*sizeof(int32_t); |
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long j = n2*sizeof(int32_t); |
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asm volatile( |
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"movsd %0, %%xmm7 \n\t" |
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"movapd %1, %%xmm6 \n\t" |
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"movapd %2, %%xmm5 \n\t" |
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"movlhps %%xmm7, %%xmm7 \n\t" |
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"subpd %%xmm5, %%xmm7 \n\t" |
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"addsd %%xmm6, %%xmm7 \n\t" |
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::"m"(c), "m"(*ff_pd_1), "m"(*ff_pd_2) |
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); |
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#define WELCH(MOVPD)\ |
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asm volatile(\
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"1: \n\t"\
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"movapd %%xmm7, %%xmm1 \n\t"\
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"mulpd %%xmm1, %%xmm1 \n\t"\
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"movapd %%xmm6, %%xmm0 \n\t"\
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"subpd %%xmm1, %%xmm0 \n\t"\
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"pshufd $0x4e, %%xmm0, %%xmm1 \n\t"\
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"cvtpi2pd (%4,%0), %%xmm2 \n\t"\
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"cvtpi2pd (%5,%1), %%xmm3 \n\t"\
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"mulpd %%xmm0, %%xmm2 \n\t"\
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"mulpd %%xmm1, %%xmm3 \n\t"\
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"movapd %%xmm2, (%2,%0,2) \n\t"\
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MOVPD" %%xmm3, (%3,%1,2) \n\t"\
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"subpd %%xmm5, %%xmm7 \n\t"\
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"sub $8, %1 \n\t"\
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"add $8, %0 \n\t"\
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"jl 1b \n\t"\
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:"+&r"(i), "+&r"(j)\
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:"r"(w_data+n2), "r"(w_data+len-2-n2),\
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"r"(data+n2), "r"(data+len-2-n2)\
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); |
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if(len&1) |
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WELCH("movupd") |
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else |
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WELCH("movapd") |
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#undef WELCH |
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} |
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void ff_flac_compute_autocorr_sse2(const int32_t *data, int len, int lag, |
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double *autoc) |
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{ |
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double tmp[len + lag + 2]; |
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double *data1 = tmp + lag; |
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int j; |
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if((long)data1 & 15) |
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data1++; |
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apply_welch_window_sse2(data, len, data1); |
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for(j=0; j<lag; j++) |
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data1[j-lag]= 0.0; |
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data1[len] = 0.0; |
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for(j=0; j<lag; j+=2){ |
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long i = -len*sizeof(double); |
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if(j == lag-2) { |
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asm volatile( |
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"movsd %6, %%xmm0 \n\t" |
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"movsd %6, %%xmm1 \n\t" |
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"movsd %6, %%xmm2 \n\t" |
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"1: \n\t" |
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"movapd (%4,%0), %%xmm3 \n\t" |
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"movupd -8(%5,%0), %%xmm4 \n\t" |
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"movapd (%5,%0), %%xmm5 \n\t" |
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"mulpd %%xmm3, %%xmm4 \n\t" |
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"mulpd %%xmm3, %%xmm5 \n\t" |
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"mulpd -16(%5,%0), %%xmm3 \n\t" |
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"addpd %%xmm4, %%xmm1 \n\t" |
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"addpd %%xmm5, %%xmm0 \n\t" |
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"addpd %%xmm3, %%xmm2 \n\t" |
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"add $16, %0 \n\t" |
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"jl 1b \n\t" |
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"movhlps %%xmm0, %%xmm3 \n\t" |
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"movhlps %%xmm1, %%xmm4 \n\t" |
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"movhlps %%xmm2, %%xmm5 \n\t" |
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"addsd %%xmm3, %%xmm0 \n\t" |
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"addsd %%xmm4, %%xmm1 \n\t" |
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"addsd %%xmm5, %%xmm2 \n\t" |
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"movsd %%xmm0, %1 \n\t" |
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"movsd %%xmm1, %2 \n\t" |
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"movsd %%xmm2, %3 \n\t" |
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:"+&r"(i), "=m"(autoc[j]), "=m"(autoc[j+1]), "=m"(autoc[j+2]) |
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:"r"(data1+len), "r"(data1+len-j), "m"(*ff_pd_1) |
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); |
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} else { |
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asm volatile( |
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"movsd %5, %%xmm0 \n\t" |
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"movsd %5, %%xmm1 \n\t" |
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"1: \n\t" |
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"movapd (%3,%0), %%xmm3 \n\t" |
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"movupd -8(%4,%0), %%xmm4 \n\t" |
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"mulpd %%xmm3, %%xmm4 \n\t" |
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"mulpd (%4,%0), %%xmm3 \n\t" |
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"addpd %%xmm4, %%xmm1 \n\t" |
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"addpd %%xmm3, %%xmm0 \n\t" |
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"add $16, %0 \n\t" |
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"jl 1b \n\t" |
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"movhlps %%xmm0, %%xmm3 \n\t" |
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"movhlps %%xmm1, %%xmm4 \n\t" |
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"addsd %%xmm3, %%xmm0 \n\t" |
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"addsd %%xmm4, %%xmm1 \n\t" |
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"movsd %%xmm0, %1 \n\t" |
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"movsd %%xmm1, %2 \n\t" |
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:"+&r"(i), "=m"(autoc[j]), "=m"(autoc[j+1]) |
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:"r"(data1+len), "r"(data1+len-j), "m"(*ff_pd_1) |
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); |
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} |
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} |
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} |
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