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| author | Muhammad Faiz <mfcc64@gmail.com> | 2016-06-12 05:19:20 +0700 |
|---|---|---|
| committer | Muhammad Faiz <mfcc64@gmail.com> | 2016-06-13 12:36:01 +0700 |
| commit | b8c6e5a6618337a82ea9d0bafb471eeecc51b919 (patch) | |
| tree | 2e3f169f004747e59cde3043312446deec719711 /libswresample/soxr_resample.c | |
| parent | 5ca44ebd99937b0038c25784570fa80d158b21fb (diff) | |
| download | ffmpeg-b8c6e5a6618337a82ea9d0bafb471eeecc51b919.tar.gz | |
swresample: add exact_rational option
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>
Diffstat (limited to 'libswresample/soxr_resample.c')
| -rw-r--r-- | libswresample/soxr_resample.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libswresample/soxr_resample.c b/libswresample/soxr_resample.c index 807f508405..b9c6735028 100644 --- a/libswresample/soxr_resample.c +++ b/libswresample/soxr_resample.c @@ -30,7 +30,7 @@ #include <soxr.h> static struct ResampleContext *create(struct ResampleContext *c, int out_rate, int in_rate, int filter_size, int phase_shift, int linear, - double cutoff, enum AVSampleFormat format, enum SwrFilterType filter_type, double kaiser_beta, double precision, int cheby){ + double cutoff, enum AVSampleFormat format, enum SwrFilterType filter_type, double kaiser_beta, double precision, int cheby, int exact_rational){ soxr_error_t error; soxr_datatype_t type = |