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path: root/libavfilter/af_aiir.c
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* avfilter: Constify all AVFiltersAndreas Rheinhardt2021-04-27
| | | | | | | This is possible now that the next-API is gone. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com> Signed-off-by: James Almer <jamrial@gmail.com>
* Remove double ';'Andreas Rheinhardt2021-03-01
| | | | Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
* Mark some pointers as constAndreas Rheinhardt2021-01-01
| | | | | Reviewed-by: Lynne <dev@lynne.ee> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
* avfilter/af_aiir: add support for arbitrary order lattice-ladder filter formatPaul B Mahol2020-11-22
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* avfilter/af_aiir: remove unused argumentPaul B Mahol2020-10-19
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* avfilter/af_aiir: fix sp2zp mappingPaul B Mahol2020-10-19
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* avfilter/af_aiir: add analog transfer function formatPaul B Mahol2020-10-18
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* avfilter/af_aiir: use av_sscanf()Paul B Mahol2020-10-17
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* avfilter/af_aiir: reverse order of biquads in serial processingPaul B Mahol2020-10-17
| | | | | This avoids most of clippings for fixed-point precision inputs. Also add warning about filtering fixed-point precision with parallel processing.
* avfilter/af_aiir: use transposed II form for biquad sectionsPaul B Mahol2020-10-16
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* avfilter/af_aiir: implement parallel processingPaul B Mahol2020-10-16
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* lavfi: regroup formats lists in a single structure.Nicolas George2020-09-08
| | | | | | | | | | | | | | | It will allow to refernce it as a whole without clunky macros. Most of the changes have been automatically made with sed: sed -i ' s/-> *in_formats/->incfg.formats/g; s/-> *out_formats/->outcfg.formats/g; s/-> *in_channel_layouts/->incfg.channel_layouts/g; s/-> *out_channel_layouts/->outcfg.channel_layouts/g; s/-> *in_samplerates/->incfg.samplerates/g; s/-> *out_samplerates/->outcfg.samplerates/g; ' src/libavfilter/*(.)
* avfilter/af_aiir: Fix segfault and leak upon allocation failureAndreas Rheinhardt2020-08-26
| | | | | | | | | | | | | | | | | | | | | The aiir filter adds output pads in its init function. Each of these output pads had a name which was allocated and to be freed in the uninit function. Given that the aiir filter has between one and two outputs, one output pad's name was freed unconditionally and a second was freed conditionally. Yet if adding output pads fails, there are no output pads at all and trying to free a nonexistent pad's name will lead to a segfault. Furthermore, if the name could be successfully allocated, yet adding the new pad fails, the name would leak. This commit fixes this by not allocating the pads' names at all any more: They are constant anyway. This allows to remove the code to free them and hence fixes the aforementioned bugs. Reviewed-by: Paul B Mahol <onemda@gmail.com> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
* avfilter/af_aiir: simplify polynomial evaluationPaul B Mahol2020-05-30
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* avfilter/af_aiir: use correct size when allocating in zp2tfPaul B Mahol2020-05-30
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* lavfi/aiir: Refine the pad/vpad related operationJun Zhao2020-05-30
| | | | | | | move the pad/vpad related operation with more natural coding style. Signed-off-by: Jun Zhao <barryjzhao@tencent.com>
* Revert "avfilter/af_aiir: move response drawing as last step"Paul B Mahol2020-05-30
| | | | This reverts commit ca7095a9072fab4cdb41af12da9d94752e082e34.
* avfilter/af_aiir: improve response calculation with zp coefficientsPaul B Mahol2020-05-30
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* avfilter/af_aiir: add S-plane supportPaul B Mahol2020-05-30
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* avfilter/af_aiir: make it clear that transfer function is digital onePaul B Mahol2020-05-30
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* avfilter/af_aiir: move response drawing as last stepPaul B Mahol2020-05-22
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* avfilter/af_aiir: fix first denominator calculationPaul B Mahol2020-05-22
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* avfilter/af_aiir: add more descriptive options aliasesPaul B Mahol2020-05-22
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* avfilter/af_aiir: export normalize optionPaul B Mahol2020-05-22
| | | | And enable it in all modes by default.
* avfilter/af_aiir: fix first delay valuePaul B Mahol2020-05-22
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* avfilter/af_aiir: fix phase and group delay calculationPaul B Mahol2020-05-20
| | | | Properly unwrap phase.
* avfilter/af_aiir: fix invalid memory access with tf filteringPaul B Mahol2020-05-19
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* avfilter/af_aiir: check if frame clone is setPaul B Mahol2020-01-14
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* avfilter/af_aiir: normalize biquads only if divisor is big enoughPaul B Mahol2019-11-22
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* avfilter/af_aiir: fix biquads normalizationPaul B Mahol2019-11-22
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* avfilter/af_aiir: add missing normalization of biquads gainsPaul B Mahol2019-11-22
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* avfilter/af_aiir: make a/b coefficients arrayPaul B Mahol2019-11-22
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* avfilter/af_aiir: factor out response calculationPaul B Mahol2019-11-22
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* avfilter/af_aiir: check for stabilityPaul B Mahol2019-11-22
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* avfilter/af_aiir: fix array length when selecting conjugate polesPaul B Mahol2019-11-21
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* avfilter/af_aiir: calculate group delay tooPaul B Mahol2019-07-13
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* avfilter/af_aiir: do not ignore k option for audio filteringPaul B Mahol2019-07-13
| | | | Previously it was used only for displaying frequency response.
* avfilter/af_aiir: implement mix optionPaul B Mahol2019-07-08
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* avfilter/af_aiir: implement rate optionPaul B Mahol2018-11-08
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* avfilter/af_aiir: Remove l from %lf in av_log environmentMichael Niedermayer2018-10-07
| | | | | | The l modifier does nothing in C99 and it was undefined in C89 for %f Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
* lavfi/af_afir,af_aiir: Remove a variable that is always -1.Carl Eugen Hoyos2018-07-19
| | | | | | | | | | 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; ~~~~~~~~~~~~^~~~
* avfilter/af_aiir: draw IR frequency responsePaul B Mahol2018-05-30
| | | | Signed-off-by: Paul B Mahol <onemda@gmail.com>
* avfilter/af_aiir: add polar zeros/poles format variantPaul B Mahol2018-01-10
| | | | Signed-off-by: Paul B Mahol <onemda@gmail.com>
* avfilter/af_aiir: unbreak clipping detectionPaul B Mahol2018-01-10
| | | | Signed-off-by: Paul B Mahol <onemda@gmail.com>
* avfilter/af_aiir: do not leak memory on failure in convert_zp2tf()Paul B Mahol2018-01-10
| | | | Signed-off-by: Paul B Mahol <onemda@gmail.com>
* avfilter/af_aiir: refactor code so it uses IIRChannel structPaul B Mahol2018-01-09
| | | | Signed-off-by: Paul B Mahol <onemda@gmail.com>
* avfilter/af_aiir: make default processing to serially cascadedPaul B Mahol2018-01-09
| | | | | | Also add several helpfull log messages. Signed-off-by: Paul B Mahol <onemda@gmail.com>
* avfilter/af_aiir: add slice threading supportPaul B Mahol2018-01-09
| | | | Signed-off-by: Paul B Mahol <onemda@gmail.com>
* avfilter/af_aiir: add cascaded biquads supportPaul B Mahol2018-01-09
| | | | | | Also add precision option. Signed-off-by: Paul B Mahol <onemda@gmail.com>
* avfilter/af_aiir: do not forget to free gains tooPaul B Mahol2018-01-08
| | | | Signed-off-by: Paul B Mahol <onemda@gmail.com>
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