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ffmpeg-0.6.3
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${ noResults }
FFmpeg/libswresample/arm
Muhammad Faiz
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>
|
9 years ago | |
|---|---|---|
| .. | ||
| Makefile | swresample/arm: add ff_resample_common_apply_filter_{x4,x8}_{float,s16}_neon | 9 years ago |
| audio_convert_init.c | audioconvert/arm: require alignment of 16 | 12 years ago |
| audio_convert_neon.S | Fix libswresample compilation with Apple Neon assembler. | 11 years ago |
| neontest.c | swresample: Add arm&x86 clobber tests | 11 years ago |
| resample.S | swresample/arm: add ff_resample_common_apply_filter_{x4,x8}_{float,s16}_neon | 9 years ago |
| resample_init.c | swresample: add exact_rational option | 9 years ago |