mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
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
/*
|
|
* audio resampling
|
|
* Copyright (c) 2004-2012 Michael Niedermayer <michaelni@gmx.at>
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* audio resampling
|
|
* @author Michael Niedermayer <michaelni@gmx.at>
|
|
*/
|
|
|
|
#include "resample.h"
|
|
|
|
#define TEMPLATE_RESAMPLE_S16
|
|
#include "resample_template.c"
|
|
#undef TEMPLATE_RESAMPLE_S16
|
|
|
|
#define TEMPLATE_RESAMPLE_S32
|
|
#include "resample_template.c"
|
|
#undef TEMPLATE_RESAMPLE_S32
|
|
|
|
#define TEMPLATE_RESAMPLE_FLT
|
|
#include "resample_template.c"
|
|
#undef TEMPLATE_RESAMPLE_FLT
|
|
|
|
#define TEMPLATE_RESAMPLE_DBL
|
|
#include "resample_template.c"
|
|
#undef TEMPLATE_RESAMPLE_DBL
|
|
|
|
void swri_resample_dsp_init(ResampleContext *c)
|
|
{
|
|
switch(c->format){
|
|
case AV_SAMPLE_FMT_S16P:
|
|
c->dsp.resample_one = resample_one_int16;
|
|
c->dsp.resample_common = resample_common_int16;
|
|
c->dsp.resample_linear = resample_linear_int16;
|
|
break;
|
|
case AV_SAMPLE_FMT_S32P:
|
|
c->dsp.resample_one = resample_one_int32;
|
|
c->dsp.resample_common = resample_common_int32;
|
|
c->dsp.resample_linear = resample_linear_int32;
|
|
break;
|
|
case AV_SAMPLE_FMT_FLTP:
|
|
c->dsp.resample_one = resample_one_float;
|
|
c->dsp.resample_common = resample_common_float;
|
|
c->dsp.resample_linear = resample_linear_float;
|
|
break;
|
|
case AV_SAMPLE_FMT_DBLP:
|
|
c->dsp.resample_one = resample_one_double;
|
|
c->dsp.resample_common = resample_common_double;
|
|
c->dsp.resample_linear = resample_linear_double;
|
|
break;
|
|
}
|
|
|
|
if (ARCH_X86) swri_resample_dsp_x86_init(c);
|
|
else if (ARCH_ARM) swri_resample_dsp_arm_init(c);
|
|
}
|