mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
b8c6e5a661
give high quality resampling
as good as with linear_interp=on
as fast as without linear_interp=on
tested visually with ffplay
ffplay -f lavfi "aevalsrc='sin(10000*t*t)', aresample=osr=48000, showcqt=gamma=5"
ffplay -f lavfi "aevalsrc='sin(10000*t*t)', aresample=osr=48000:linear_interp=on, showcqt=gamma=5"
ffplay -f lavfi "aevalsrc='sin(10000*t*t)', aresample=osr=48000:exact_rational=on, showcqt=gamma=5"
slightly speed improvement
for fair comparison with -cpuflags 0
audio.wav is ~ 1 hour 44100 stereo 16bit wav file
ffmpeg -i audio.wav -af aresample=osr=48000 -f null -
old new
real 13.498s 13.121s
user 13.364s 12.987s
sys 0.131s 0.129s
linear_interp=on
old new
real 23.035s 23.050s
user 22.907s 22.917s
sys 0.119s 0.125s
exact_rational=on
real 12.418s
user 12.298s
sys 0.114s
possibility to decrease memory usage if soft compensation is ignored
Signed-off-by: Muhammad Faiz <mfcc64@gmail.com>
46 lines
1.7 KiB
C
46 lines
1.7 KiB
C
/*
|
|
* Version macros.
|
|
*
|
|
* This file is part of libswresample
|
|
*
|
|
* libswresample 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.
|
|
*
|
|
* libswresample 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 libswresample; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef SWRESAMPLE_VERSION_H
|
|
#define SWRESAMPLE_VERSION_H
|
|
|
|
/**
|
|
* @file
|
|
* Libswresample version macros
|
|
*/
|
|
|
|
#include "libavutil/avutil.h"
|
|
|
|
#define LIBSWRESAMPLE_VERSION_MAJOR 2
|
|
#define LIBSWRESAMPLE_VERSION_MINOR 1
|
|
#define LIBSWRESAMPLE_VERSION_MICRO 100
|
|
|
|
#define LIBSWRESAMPLE_VERSION_INT AV_VERSION_INT(LIBSWRESAMPLE_VERSION_MAJOR, \
|
|
LIBSWRESAMPLE_VERSION_MINOR, \
|
|
LIBSWRESAMPLE_VERSION_MICRO)
|
|
#define LIBSWRESAMPLE_VERSION AV_VERSION(LIBSWRESAMPLE_VERSION_MAJOR, \
|
|
LIBSWRESAMPLE_VERSION_MINOR, \
|
|
LIBSWRESAMPLE_VERSION_MICRO)
|
|
#define LIBSWRESAMPLE_BUILD LIBSWRESAMPLE_VERSION_INT
|
|
|
|
#define LIBSWRESAMPLE_IDENT "SwR" AV_STRINGIFY(LIBSWRESAMPLE_VERSION)
|
|
|
|
#endif /* SWRESAMPLE_VERSION_H */
|