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https://git.ffmpeg.org/ffmpeg.git
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06f94149c6
separate dsp.resample to dsp.resample_common and dsp.resample_linear
and choose to call faster resample_common even when linear_interp=on
when c->frac and c->dst_incr_mod are both zero
speed up resampling when exact_rational and linear_interp are both
enabled because exact_rational force c->frac and c->dst_incr_mod to
be zero when soft compensation does not happen
benchmark on exact_rational=on:linear_interp=on
old new
real 8.432s 5.097s
user 7.679s 4.989s
sys 0.125s 0.107s
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Muhammad Faiz <mfcc64@gmail.com>
74 lines
2.3 KiB
C
74 lines
2.3 KiB
C
/*
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* audio resampling
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* Copyright (c) 2004-2012 Michael Niedermayer <michaelni@gmx.at>
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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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/**
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* @file
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* audio resampling
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* @author Michael Niedermayer <michaelni@gmx.at>
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*/
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#include "resample.h"
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#define TEMPLATE_RESAMPLE_S16
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#include "resample_template.c"
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#undef TEMPLATE_RESAMPLE_S16
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#define TEMPLATE_RESAMPLE_S32
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#include "resample_template.c"
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#undef TEMPLATE_RESAMPLE_S32
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#define TEMPLATE_RESAMPLE_FLT
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#include "resample_template.c"
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#undef TEMPLATE_RESAMPLE_FLT
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#define TEMPLATE_RESAMPLE_DBL
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#include "resample_template.c"
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#undef TEMPLATE_RESAMPLE_DBL
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void swri_resample_dsp_init(ResampleContext *c)
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{
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switch(c->format){
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case AV_SAMPLE_FMT_S16P:
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c->dsp.resample_one = resample_one_int16;
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c->dsp.resample_common = resample_common_int16;
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c->dsp.resample_linear = resample_linear_int16;
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break;
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case AV_SAMPLE_FMT_S32P:
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c->dsp.resample_one = resample_one_int32;
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c->dsp.resample_common = resample_common_int32;
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c->dsp.resample_linear = resample_linear_int32;
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break;
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case AV_SAMPLE_FMT_FLTP:
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c->dsp.resample_one = resample_one_float;
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c->dsp.resample_common = resample_common_float;
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c->dsp.resample_linear = resample_linear_float;
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break;
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case AV_SAMPLE_FMT_DBLP:
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c->dsp.resample_one = resample_one_double;
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c->dsp.resample_common = resample_common_double;
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c->dsp.resample_linear = resample_linear_double;
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break;
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}
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if (ARCH_X86) swri_resample_dsp_x86_init(c);
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else if (ARCH_ARM) swri_resample_dsp_arm_init(c);
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}
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