Commit Graph

12 Commits

Author SHA1 Message Date
Rahul Chaudhry e84212b78e swresample/arm: rename labels to fix xcode build error
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2018-04-28 18:08:52 +02:00
Rahul Chaudhry b22db4f465 swresample/arm: remove unintentional relocation.
Branch to global symbol results in reference to PLT, and when compiling
for THUMB-2 - in a R_ARM_THM_JUMP19 relocation. Some linkers don't
support this relocation (ld.gold), while others can end up truncating
the relocation to fit (ld.bfd).

Convert this branch through PLT into a direct branch that the assembler
can resolve locally.

See https://github.com/android-ndk/ndk/issues/337 for background.

The current workaround is to disable neon during gstreamer build,
which is not optimal and can be reverted after this patch:
41556c4157

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2018-04-19 21:49:47 +02:00
Matthieu Bouron e109c54a69 swresample/arm: cosmetic fixes 2017-01-13 21:24:25 +01:00
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>
2016-11-25 03:22:04 +07:00
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(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>
2016-06-13 12:36:01 +07:00
Matthieu Bouron f6265a5cbc swresample/arm: add ff_resample_common_apply_filter_{x4,x8}_{float,s16}_neon 2016-05-13 21:13:46 +02:00
Reimar Döffinger e535897fad Fix libswresample compilation with Apple Neon assembler.
Signed-off-by: Carl Eugen Hoyos <cehoyos@ag.or.at>
2014-02-17 17:40:10 +01:00
Martin Storsjö 3dd04cbcf7 swresample: Add arm&x86 clobber tests
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2014-01-18 18:38:57 +01:00
Michael Niedermayer d18706244f audioconvert/arm: require alignment of 16
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2012-12-14 04:49:09 +01:00
Mans Rullgard 7e3208a087 ARM: libswresample: NEON optimised generic fltp to s16 conversion
Adapted to swr by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2012-09-24 23:19:32 +02:00
Mans Rullgard 5dc7363446 ARM: libswresample: NEON optimised stereo fltp to s16 conversion
Adaption to swr by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2012-09-24 23:16:14 +02:00
Mans Rullgard 0eebde07a9 ARM: libswresample: NEON optimised flat float to s16 conversion
Adapted to swr by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2012-09-24 23:16:14 +02:00