mirror of https://github.com/FFmpeg/FFmpeg.git
64-bit CPUs always have SSE available, thus there is no need to compile in the 3dnow functions. This results in smaller binaries.pull/28/head
Ronald S. Bultje
12 years ago
parent
ddbe71b44f
commit
b6a3849adb
5 changed files with 170 additions and 226 deletions
@ -1,23 +0,0 @@ |
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/*
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* FFT/MDCT transform with 3DNow! optimizations |
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* Copyright (c) 2008 Loren Merritt |
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* |
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* This file is part of Libav. |
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* |
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* Libav 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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* Libav 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 Libav; 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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#define EMULATE_3DNOWEXT |
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#include "fft_3dn2.c" |
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@ -1,173 +0,0 @@ |
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/*
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* FFT/MDCT transform with Extended 3DNow! optimizations |
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* Copyright (c) 2006-2008 Zuxy MENG Jie, Loren Merritt |
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* |
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* This file is part of Libav. |
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* |
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* Libav 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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* Libav 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 Libav; 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 "fft.h" |
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DECLARE_ALIGNED(8, static const unsigned int, m1m1)[2] = { 1U<<31, 1U<<31 }; |
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#ifdef EMULATE_3DNOWEXT |
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#define PSWAPD(s,d)\ |
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"movq "#s","#d"\n"\
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"psrlq $32,"#d"\n"\
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"punpckldq "#s","#d"\n" |
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#define ff_fft_calc_3dnow2 ff_fft_calc_3dnow |
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#define ff_fft_dispatch_3dnow2 ff_fft_dispatch_3dnow |
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#define ff_fft_dispatch_interleave_3dnow2 ff_fft_dispatch_interleave_3dnow |
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#define ff_imdct_calc_3dnow2 ff_imdct_calc_3dnow |
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#define ff_imdct_half_3dnow2 ff_imdct_half_3dnow |
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#else |
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#define PSWAPD(s,d) "pswapd "#s","#d"\n" |
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#endif |
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void ff_fft_dispatch_3dnow2(FFTComplex *z, int nbits); |
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void ff_fft_dispatch_interleave_3dnow2(FFTComplex *z, int nbits); |
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void ff_fft_calc_3dnow2(FFTContext *s, FFTComplex *z) |
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{ |
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int n = 1<<s->nbits; |
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int i; |
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ff_fft_dispatch_interleave_3dnow2(z, s->nbits); |
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__asm__ volatile("femms"); |
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if(n <= 8) |
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for(i=0; i<n; i+=2) |
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FFSWAP(FFTSample, z[i].im, z[i+1].re); |
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} |
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void ff_imdct_half_3dnow2(FFTContext *s, FFTSample *output, const FFTSample *input) |
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{ |
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x86_reg j, k; |
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long n = s->mdct_size; |
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long n2 = n >> 1; |
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long n4 = n >> 2; |
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long n8 = n >> 3; |
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const uint16_t *revtab = s->revtab; |
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const FFTSample *tcos = s->tcos; |
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const FFTSample *tsin = s->tsin; |
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const FFTSample *in1, *in2; |
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FFTComplex *z = (FFTComplex *)output; |
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/* pre rotation */ |
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in1 = input; |
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in2 = input + n2 - 1; |
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#ifdef EMULATE_3DNOWEXT |
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__asm__ volatile("movd %0, %%mm7" ::"r"(1U<<31)); |
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#endif |
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for(k = 0; k < n4; k++) { |
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// FIXME a single block is faster, but gcc 2.95 and 3.4.x on 32bit can't compile it
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__asm__ volatile( |
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"movd %0, %%mm0 \n" |
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"movd %2, %%mm1 \n" |
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"punpckldq %1, %%mm0 \n" |
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"punpckldq %3, %%mm1 \n" |
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"movq %%mm0, %%mm2 \n" |
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PSWAPD( %%mm1, %%mm3 ) |
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"pfmul %%mm1, %%mm0 \n" |
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"pfmul %%mm3, %%mm2 \n" |
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#ifdef EMULATE_3DNOWEXT |
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"movq %%mm0, %%mm1 \n" |
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"punpckhdq %%mm2, %%mm0 \n" |
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"punpckldq %%mm2, %%mm1 \n" |
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"pxor %%mm7, %%mm0 \n" |
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"pfadd %%mm1, %%mm0 \n" |
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#else |
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"pfpnacc %%mm2, %%mm0 \n" |
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#endif |
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::"m"(in2[-2*k]), "m"(in1[2*k]), |
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"m"(tcos[k]), "m"(tsin[k]) |
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); |
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__asm__ volatile( |
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"movq %%mm0, %0 \n\t" |
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:"=m"(z[revtab[k]]) |
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); |
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} |
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ff_fft_dispatch_3dnow2(z, s->nbits); |
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#define CMUL(j,mm0,mm1)\ |
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"movq (%2,"#j",2), %%mm6 \n"\
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"movq 8(%2,"#j",2), "#mm0"\n"\
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"movq %%mm6, "#mm1"\n"\
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"movq "#mm0",%%mm7 \n"\
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"pfmul (%3,"#j"), %%mm6 \n"\
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"pfmul (%4,"#j"), "#mm0"\n"\
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"pfmul (%4,"#j"), "#mm1"\n"\
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"pfmul (%3,"#j"), %%mm7 \n"\
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"pfsub %%mm6, "#mm0"\n"\
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"pfadd %%mm7, "#mm1"\n" |
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/* post rotation */ |
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j = -n2; |
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k = n2-8; |
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__asm__ volatile( |
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"1: \n" |
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CMUL(%0, %%mm0, %%mm1) |
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CMUL(%1, %%mm2, %%mm3) |
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"movd %%mm0, (%2,%0,2) \n" |
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"movd %%mm1,12(%2,%1,2) \n" |
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"movd %%mm2, (%2,%1,2) \n" |
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"movd %%mm3,12(%2,%0,2) \n" |
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"psrlq $32, %%mm0 \n" |
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"psrlq $32, %%mm1 \n" |
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"psrlq $32, %%mm2 \n" |
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"psrlq $32, %%mm3 \n" |
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"movd %%mm0, 8(%2,%0,2) \n" |
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"movd %%mm1, 4(%2,%1,2) \n" |
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"movd %%mm2, 8(%2,%1,2) \n" |
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"movd %%mm3, 4(%2,%0,2) \n" |
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"sub $8, %1 \n" |
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"add $8, %0 \n" |
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"jl 1b \n" |
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:"+r"(j), "+r"(k) |
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:"r"(z+n8), "r"(tcos+n8), "r"(tsin+n8) |
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:"memory" |
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); |
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__asm__ volatile("femms"); |
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} |
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void ff_imdct_calc_3dnow2(FFTContext *s, FFTSample *output, const FFTSample *input) |
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{ |
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x86_reg j, k; |
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long n = s->mdct_size; |
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long n4 = n >> 2; |
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ff_imdct_half_3dnow2(s, output+n4, input); |
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j = -n; |
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k = n-8; |
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__asm__ volatile( |
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"movq %4, %%mm7 \n" |
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"1: \n" |
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PSWAPD((%2,%1), %%mm0) |
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PSWAPD((%3,%0), %%mm1) |
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"pxor %%mm7, %%mm0 \n" |
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"movq %%mm1, (%3,%1) \n" |
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"movq %%mm0, (%2,%0) \n" |
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"sub $8, %1 \n" |
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"add $8, %0 \n" |
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"jl 1b \n" |
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:"+r"(j), "+r"(k) |
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:"r"(output+n4), "r"(output+n4*3), |
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"m"(*m1m1) |
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); |
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__asm__ volatile("femms"); |
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} |
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