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34454c761f
The 32bits targets have been compiled with -mfpmath=sse for proper reference.
sbr_sum_square C /32bits: 82c (unrolled)/102c
C /64bits: 69c (unrolled)/82c
SSE/32bits: 42c
SSE/64bits: 31c
Use of SSE4.1 dpps to perform the final sum is slower.
Not unrolling to perform 8 operations in a loop yields 10 more cycles.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
52 lines
2.0 KiB
C
52 lines
2.0 KiB
C
/*
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* Copyright (c) 2012 Mans Rullgard
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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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#ifndef LIBAVCODEC_SBRDSP_H
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#define LIBAVCODEC_SBRDSP_H
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#include <stdint.h>
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typedef struct SBRDSPContext {
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void (*sum64x5)(float *z);
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float (*sum_square)(float (*x)[2], int n);
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void (*neg_odd_64)(float *x);
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void (*qmf_pre_shuffle)(float *z);
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void (*qmf_post_shuffle)(float W[32][2], const float *z);
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void (*qmf_deint_neg)(float *v, const float *src);
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void (*qmf_deint_bfly)(float *v, const float *src0, const float *src1);
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void (*autocorrelate)(const float x[40][2], float phi[3][2][2]);
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void (*hf_gen)(float (*X_high)[2], const float (*X_low)[2],
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const float alpha0[2], const float alpha1[2],
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float bw, int start, int end);
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void (*hf_g_filt)(float (*Y)[2], const float (*X_high)[40][2],
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const float *g_filt, int m_max, intptr_t ixh);
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void (*hf_apply_noise[4])(float (*Y)[2], const float *s_m,
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const float *q_filt, int noise,
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int kx, int m_max);
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} SBRDSPContext;
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extern const float ff_sbr_noise_table[][2];
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void ff_sbrdsp_init(SBRDSPContext *s);
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void ff_sbrdsp_init_arm(SBRDSPContext *s);
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void ff_sbrdsp_init_x86(SBRDSPContext *s);
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#endif
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