mirror of
https://github.com/FFmpeg/FFmpeg.git
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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>
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|---|---|---|
| .. | ||
| aarch64 | ||
| arm | ||
| x86 | ||
| audioconvert.c | ||
| audioconvert.h | ||
| dither_template.c | ||
| dither.c | ||
| libswresample.v | ||
| log2_tab.c | ||
| Makefile | ||
| noise_shaping_data.c | ||
| options.c | ||
| rematrix_template.c | ||
| rematrix.c | ||
| resample_dsp.c | ||
| resample_template.c | ||
| resample.c | ||
| resample.h | ||
| soxr_resample.c | ||
| swresample_frame.c | ||
| swresample_internal.h | ||
| swresample-test.c | ||
| swresample.c | ||
| swresample.h | ||
| swresampleres.rc | ||
| version.h | ||