Paul B Mahol
89aa1342b1
avfilter/af_aiir: normalize biquads only if divisor is big enough
2019-11-22 21:10:43 +01:00
Paul B Mahol
f2a01b4c8b
avfilter/af_aiir: fix biquads normalization
2019-11-22 20:24:29 +01:00
Paul B Mahol
eecc45cea5
avfilter/af_aiir: add missing normalization of biquads gains
2019-11-22 17:42:04 +01:00
Paul B Mahol
2f5fb9e60f
avfilter/af_aiir: make a/b coefficients array
2019-11-22 16:13:06 +01:00
Paul B Mahol
e169d3756e
avfilter/af_aiir: factor out response calculation
2019-11-22 16:07:03 +01:00
Paul B Mahol
c36e72ed27
avfilter/af_aiir: check for stability
2019-11-22 16:07:02 +01:00
Paul B Mahol
9cd56bb94c
avfilter/af_aiir: fix array length when selecting conjugate poles
2019-11-21 23:27:34 +01:00
Paul B Mahol
80dacbedba
avfilter/af_aiir: calculate group delay too
2019-07-13 15:45:06 +02:00
Paul B Mahol
60e6db2f5b
avfilter/af_aiir: do not ignore k option for audio filtering
...
Previously it was used only for displaying frequency response.
2019-07-13 12:29:52 +02:00
Paul B Mahol
2a801e8856
avfilter/af_aiir: implement mix option
2019-07-08 16:48:10 +02:00
Paul B Mahol
0f0f840716
avfilter/af_aiir: implement rate option
2018-11-08 13:05:08 +01:00
Michael Niedermayer
8dd7c2c6a7
avfilter/af_aiir: Remove l from %lf in av_log environment
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The l modifier does nothing in C99 and it was undefined in C89 for %f
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2018-10-07 03:03:09 +02:00
Carl Eugen Hoyos
9cb3d8fcb7
lavfi/af_afir,af_aiir: Remove a variable that is always -1.
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Fixes two warnings:
libavfilter/af_afir.c:194:45: warning: assuming signed overflow does not occur when assuming that (X - c) > X is always false [-Wstrict-overflow]
int dx = FFABS(x1-x0), sx = x0 < x1 ? 1 : -1;
~~~~~~~~~~~~^~~~
libavfilter/af_aiir.c:689:45: warning: assuming signed overflow does not occur when assuming that (X - c) > X is always false [-Wstrict-overflow]
int dx = FFABS(x1-x0), sx = x0 < x1 ? 1 : -1;
~~~~~~~~~~~~^~~~
2018-07-19 23:13:24 +02:00
Paul B Mahol
1aa5192451
avfilter/af_aiir: draw IR frequency response
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Signed-off-by: Paul B Mahol <onemda@gmail.com>
2018-05-30 17:26:08 +02:00
Paul B Mahol
de8a1d8d4d
avfilter/af_aiir: add polar zeros/poles format variant
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Signed-off-by: Paul B Mahol <onemda@gmail.com>
2018-01-10 20:25:50 +01:00
Paul B Mahol
de5b12c93f
avfilter/af_aiir: unbreak clipping detection
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Signed-off-by: Paul B Mahol <onemda@gmail.com>
2018-01-10 19:24:41 +01:00
Paul B Mahol
3c29f68b4d
avfilter/af_aiir: do not leak memory on failure in convert_zp2tf()
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Signed-off-by: Paul B Mahol <onemda@gmail.com>
2018-01-10 18:38:01 +01:00
Paul B Mahol
e9edd61965
avfilter/af_aiir: refactor code so it uses IIRChannel struct
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Signed-off-by: Paul B Mahol <onemda@gmail.com>
2018-01-09 17:46:27 +01:00
Paul B Mahol
21c99f4b40
avfilter/af_aiir: make default processing to serially cascaded
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Also add several helpfull log messages.
Signed-off-by: Paul B Mahol <onemda@gmail.com>
2018-01-09 13:08:01 +01:00
Paul B Mahol
d9a3074b93
avfilter/af_aiir: add slice threading support
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Signed-off-by: Paul B Mahol <onemda@gmail.com>
2018-01-09 12:25:35 +01:00
Paul B Mahol
7add1ca2b5
avfilter/af_aiir: add cascaded biquads support
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Also add precision option.
Signed-off-by: Paul B Mahol <onemda@gmail.com>
2018-01-09 12:25:35 +01:00
Paul B Mahol
3f234a0b22
avfilter/af_aiir: do not forget to free gains too
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Signed-off-by: Paul B Mahol <onemda@gmail.com>
2018-01-08 11:22:21 +01:00
Paul B Mahol
205046420d
avfilter/af_aiir: fix typo which may cause overread
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Signed-off-by: Paul B Mahol <onemda@gmail.com>
2018-01-08 08:45:02 +01:00
Paul B Mahol
2d3df8e2e9
avfilter/af_aiir: rename options, provide gains in separate option
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This way it can be also used for other format.
Signed-off-by: Paul B Mahol <onemda@gmail.com>
2018-01-07 21:22:38 +01:00
Paul B Mahol
6c65de3db0
avfilter/af_aiir: add support for alternative coefficients format
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Support for zeros/poles syntax on Z-plane.
Signed-off-by: Paul B Mahol <onemda@gmail.com>
2018-01-07 17:03:46 +01:00
Paul B Mahol
52c959a237
avfilter/af_aiir: do not crash with invalid options
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Signed-off-by: Paul B Mahol <onemda@gmail.com>
2018-01-05 19:58:07 +01:00
Paul B Mahol
7bb1be9af0
avfilter: add arbitrary audio IIR filter
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Signed-off-by: Paul B Mahol <onemda@gmail.com>
2018-01-05 17:04:21 +01:00
