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d7e5aebae7
* qatar/master: (23 commits) ac3enc: correct the flipped sign in the ac3_fixed encoder Eliminate pointless '#if 1' statements without matching '#else'. Add AVX FFT implementation. Increase alignment of av_malloc() as needed by AVX ASM. Update x86inc.asm from x264 to allow AVX emulation using SSE and MMX. mjpeg: Detect overreads in mjpeg_decode_scan() and error out. documentation: extend documentation for ffmpeg -aspect option APIChanges: update commit hashes for recent additions. lavc: deprecate FF_*_TYPE macros in favor of AV_PICTURE_TYPE_* enums aac: add headers needed for log2f() lavc: remove FF_API_MB_Q cruft lavc: remove FF_API_RATE_EMU cruft lavc: remove FF_API_HURRY_UP cruft pad: make the filter parametric vsrc_movie: add key_frame and pict_type. vsrc_movie: fix leak in request_frame() lavfi: add key_frame and pict_type to AVFilterBufferRefVideo. vsrc_buffer: add sample_aspect_ratio fields to arguments. lavfi: add fieldorder filter scale: make the filter parametric ... Conflicts: Changelog doc/filters.texi ffmpeg.c libavcodec/ac3dec.h libavcodec/dsputil.c libavfilter/avfilter.h libavfilter/vf_scale.c libavfilter/vf_yadif.c libavfilter/vsrc_buffer.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
109 lines
3.1 KiB
C
109 lines
3.1 KiB
C
/*
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* FFT/MDCT transform with SSE optimizations
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* Copyright (c) 2008 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 "libavutil/x86_cpu.h"
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#include "libavcodec/dsputil.h"
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#include "fft.h"
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DECLARE_ASM_CONST(16, int, ff_m1m1m1m1)[4] =
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{ 1 << 31, 1 << 31, 1 << 31, 1 << 31 };
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void ff_fft_dispatch_sse(FFTComplex *z, int nbits);
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void ff_fft_dispatch_interleave_sse(FFTComplex *z, int nbits);
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void ff_fft_dispatch_interleave_avx(FFTComplex *z, int nbits);
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void ff_fft_calc_avx(FFTContext *s, FFTComplex *z)
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{
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ff_fft_dispatch_interleave_avx(z, s->nbits);
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}
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void ff_fft_calc_sse(FFTContext *s, FFTComplex *z)
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{
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int n = 1 << s->nbits;
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ff_fft_dispatch_interleave_sse(z, s->nbits);
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if(n <= 16) {
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x86_reg i = -8*n;
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__asm__ volatile(
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"1: \n"
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"movaps (%0,%1), %%xmm0 \n"
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"movaps %%xmm0, %%xmm1 \n"
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"unpcklps 16(%0,%1), %%xmm0 \n"
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"unpckhps 16(%0,%1), %%xmm1 \n"
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"movaps %%xmm0, (%0,%1) \n"
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"movaps %%xmm1, 16(%0,%1) \n"
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"add $32, %0 \n"
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"jl 1b \n"
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:"+r"(i)
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:"r"(z+n)
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:"memory"
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);
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}
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}
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void ff_fft_permute_sse(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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for(i=0; i<n; i+=2) {
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__asm__ volatile(
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"movaps %2, %%xmm0 \n"
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"movlps %%xmm0, %0 \n"
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"movhps %%xmm0, %1 \n"
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:"=m"(s->tmp_buf[s->revtab[i]]),
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"=m"(s->tmp_buf[s->revtab[i+1]])
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:"m"(z[i])
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);
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}
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memcpy(z, s->tmp_buf, n*sizeof(FFTComplex));
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}
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void ff_imdct_calc_sse(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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s->imdct_half(s, output + n4, input);
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j = -n;
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k = n-16;
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__asm__ volatile(
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"movaps "MANGLE(ff_m1m1m1m1)", %%xmm7 \n"
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"1: \n"
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"movaps (%2,%1), %%xmm0 \n"
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"movaps (%3,%0), %%xmm1 \n"
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"shufps $0x1b, %%xmm0, %%xmm0 \n"
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"shufps $0x1b, %%xmm1, %%xmm1 \n"
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"xorps %%xmm7, %%xmm0 \n"
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"movaps %%xmm1, (%3,%1) \n"
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"movaps %%xmm0, (%2,%0) \n"
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"sub $16, %1 \n"
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"add $16, %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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XMM_CLOBBERS_ONLY("%xmm0", "%xmm1", "%xmm7")
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);
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}
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