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42 Commits

Author SHA1 Message Date
Paul B Mahol
1329db8cfb avfilter/af_aiir: simplify polynomial evaluation 2020-05-30 18:04:14 +02:00
Paul B Mahol
aac16abd92 avfilter/af_aiir: use correct size when allocating in zp2tf 2020-05-30 18:04:14 +02:00
Jun Zhao
018cd437f8 lavfi/aiir: Refine the pad/vpad related operation 
move the pad/vpad related operation with more natural
coding style.

Signed-off-by: Jun Zhao <barryjzhao@tencent.com>
 2020-05-30 19:02:43 +08:00
Paul B Mahol
6485b54477 Revert "avfilter/af_aiir: move response drawing as last step" 
This reverts commit ca7095a9072fab4cdb41af12da9d94752e082e34.
 2020-05-30 10:05:19 +02:00
Paul B Mahol
3fc7b01c52 avfilter/af_aiir: improve response calculation with zp coefficients 2020-05-30 10:05:19 +02:00
Paul B Mahol
e2e8121eaa avfilter/af_aiir: add S-plane support 2020-05-30 10:05:19 +02:00
Paul B Mahol
327b52412d avfilter/af_aiir: make it clear that transfer function is digital one 2020-05-30 10:05:19 +02:00
Paul B Mahol
ca7095a907 avfilter/af_aiir: move response drawing as last step 2020-05-22 14:14:15 +02:00
Paul B Mahol
8c825e43f8 avfilter/af_aiir: fix first denominator calculation 2020-05-22 14:12:06 +02:00
Paul B Mahol
07a9e5ec5e avfilter/af_aiir: add more descriptive options aliases 2020-05-22 12:37:17 +02:00
Paul B Mahol
ffda57b800 avfilter/af_aiir: export normalize option 
And enable it in all modes by default.
 2020-05-22 12:30:59 +02:00
Paul B Mahol
1fc5ddf774 avfilter/af_aiir: fix first delay value 2020-05-22 11:02:45 +02:00
Paul B Mahol
86822cfcd9 avfilter/af_aiir: fix phase and group delay calculation 
Properly unwrap phase.
 2020-05-20 12:08:32 +02:00
Paul B Mahol
b559a5882f avfilter/af_aiir: fix invalid memory access with tf filtering 2020-05-19 20:10:34 +02:00
Paul B Mahol
80c4c336f9 avfilter/af_aiir: check if frame clone is set 2020-01-14 16:52:07 +01:00
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 
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. 
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 
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 
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 
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() 
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 
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 
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 
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 
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 
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 
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 
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 
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 
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 
Signed-off-by: Paul B Mahol <onemda@gmail.com>
 2018-01-05 17:04:21 +01:00