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* avfilter/af_anequalizer: Avoid loss of precision when calculating nyquist ↵Michael Niedermayer2016-02-121-2/+2
| | | | | | | | | | frequency Fixes: CID1351398 Fixes: CID1351400 Reviewed-by: Paul B Mahol <onemda@gmail.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
* avfilter/af_anequalizer: Fix memleak of argsMichael Niedermayer2016-02-081-0/+1
| | | | | | Fixes CID1351355 Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
* lavfi/af_anequalizer: replace pow(x,-2) by 1/(x*x)Ganesh Ajjanagadde2015-12-281-2/+2
| | | | | Reviewed-by: Paul B Mahol <onemda@gmail.com> Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>
* lavfi/af_anequalizer: replace pow(10,x) by ff_exp10(x)Ganesh Ajjanagadde2015-12-281-9/+9
| | | | | Reviewed-by: Paul B Mahol <onemda@gmail.com> Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>
* lavfi/af_anequalizer: remove cabs, cexp dependenciesGanesh Ajjanagadde2015-12-281-8/+17
| | | | | | | | | Replaces by real arithmetic. Tested the validity of these transformations separately. Numerical differences are ~1e-15, and should not matter: it is not even clear which is more precise mathematically. Reviewed-by: Paul B Mahol <onemda@gmail.com> Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>
* avfilter/af_anequalizer: make cliping filter type actually usefulPaul B Mahol2015-12-251-1/+1
| | | | | | Previously result was ignored. Signed-off-by: Paul B Mahol <onemda@gmail.com>
* avfilter/af_anequalizer: use pow instead of exp10Paul B Mahol2015-12-251-9/+9
| | | | Signed-off-by: Paul B Mahol <onemda@gmail.com>
* avfilter: add high-order parametric multiband equalizer filterPaul B Mahol2015-12-251-0/+751
Signed-off-by: Paul B Mahol <onemda@gmail.com>
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