FFmpeg

Commit Graph

Author	SHA1	Message	Date
Matthieu Bouron	0265aec565	swresample/aarch64: add ff_resample_common_apply_filter_{x4,x8}_{float,s16}_neon	8 years ago
Muhammad Faiz	06f94149c6	swresample/resample: optimize exact_rational=on:linear_interp=on case 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>	8 years ago
Muhammad Faiz	6031e5d1af	swresample/x86: add support for exact_rational phase_shift and phase_mask is removed generally exact_rational=on is faster than exact_rational=off Signed-off-by: Muhammad Faiz <mfcc64@gmail.com>	9 years ago
Muhammad Faiz	7f1b503ec2	swresample/resample: do not increase phase_count on exact_rational high phase_count is only useful when dst_incr_mod is non zero in other word, it is only useful on soft compensation on init, it will build filter with low phase_count but when soft compensation is enabled, rebuild filter with high phase_count this approach saves lots of memory Reviewed-by: Michael Niedermayer <michael@niedermayer.cc> Signed-off-by: Muhammad Faiz <mfcc64@gmail.com>	9 years ago
Muhammad Faiz	b8c6e5a661	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(10000tt)', aresample=osr=48000, showcqt=gamma=5" ffplay -f lavfi "aevalsrc='sin(10000tt)', aresample=osr=48000:linear_interp=on, showcqt=gamma=5" ffplay -f lavfi "aevalsrc='sin(10000tt)', 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
Matthieu Bouron	f6265a5cbc	swresample/arm: add ff_resample_common_apply_filter_{x4,x8}_{float,s16}_neon	9 years ago
Ganesh Ajjanagadde	1bed09a30e	swresample: allow double precision beta value for the Kaiser window Kaiser windows inherently don't require beta to be an integer. This was an arbitrary restriction. Moreover, soxr does not require it, and in fact often estimates beta to a non-integral value. Thus, this patch allows greater flexibility for swresample clients. Micro version is updated. Reviewed-by: Derek Buitenhuis <derek.buitenhuis@gmail.com> Reviewed-by: Michael Niedermayer <michael@niedermayer.cc> Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>	9 years ago
James Almer	857cd1f33b	swr: initialize only the necessary resample dsp functions Signed-off-by: James Almer <jamrial@gmail.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
James Almer	b5f0eac068	swr: rename swresample_dsp init functions to swri_resample_dsp The swresample_ prefix is not for internal functions Signed-off-by: James Almer <jamrial@gmail.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Ronald S. Bultje	cbf21628a5	swr: remove div/mod from DSP functions. Also fix a bug with resample_compensation resetting dst_incr. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Ronald S. Bultje	7128a35f8c	swr: split out DSP functions. DSP bits of swri_resample go into their own mini-DSP functions; DSP init goes from a per-call branch in multiple_resample to a proper DSP init routine; x86 bits go into x86/; swri_resample() moves out of resample_template.c into resample.c because it's independent of DSP code or sample type; multiple_resample() is simplified. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago

11 Commits (1f0eaa02aa7141f371e095540ac285698a0bdf46)