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57 Commits

Author SHA1 Message Date
Chris Robinson
c834c3fae5 Set gains using the device channel index 2014-11-05 02:54:11 -08:00
Chris Robinson
6083a684d1 Use a method to set omni-directional channel gains 2014-11-04 03:33:35 -08:00
Chris Robinson
a77387b549 Avoid taking the square-root of the ambient gain 
Although it is more correct for preserving the apparent volume, the ambisonics-
based panning does not work on the same power scale, making it louder by
comparison.
 2014-10-11 09:35:32 -07:00
Chris Robinson
70b23ab77f Add a helper to search for a channel index by name 2014-10-02 21:19:34 -07:00
Chris Robinson
95ba18cf4e Make ComputeAngleGains use ComputeDirectionalGains 2014-10-02 18:05:42 -07:00
Chris Robinson
4e66224d6c Combine some fields into a struct 2014-09-10 17:53:01 -07:00
Chris Robinson
99b71278db Remove a couple unnecessary typedefs 2014-08-24 23:48:42 -07:00
François Cami
3c13e1e333 Update COPYING to the latest https://www.gnu.org/licenses/old-licenses/lgpl-2.0.txt to fix the FSF' address Fix the FSF' address in the source 2014-08-18 11:34:29 -07:00
Chris Robinson
70f1e54068 Use logarithmic adjustment for the gain in the autowah effect 2014-05-17 03:08:04 -07:00
Chris Robinson
16d3316f70 Use an enum for the chorus and flanger waveforms 2014-05-14 23:51:24 -07:00
Chris Robinson
3582a44dff Make LOWPASSFREQREF a float value 2014-05-11 10:09:52 -07:00
Chris Robinson
0a030c2bd9 Use a void* for the effect state Delete method param 2014-03-21 23:56:18 -07:00
Chris Robinson
ea0aea6508 Change the autowah to have a cutoff range of 20Hz to 20KHz 
This is the same as allowed in the SF2 spec for its filter cutoff generator,
which can be used for a wah effect in MIDI. It makes sense to use a similar
range here.
 2014-02-07 03:23:49 -08:00
Chris Robinson
6f711c32ba Fix some types 2014-02-07 03:20:27 -08:00
Chris Robinson
d596cf9cf3 Use a different autowah filter range 
Still just guesses, but this seems to avoid math problems with low peak gains.
 2013-12-20 00:16:23 -08:00
Chris Robinson
ac525db845 Fix numeric constant type (double->float) 2013-12-08 05:01:06 -08:00
Chris Robinson
4386ee32ce Use one long buffer for the chorus and flanger delay lines 2013-11-10 02:48:03 -08:00
Chris Robinson
a603dd55ff Rename lfo_coeff to lfo_scale 2013-11-08 16:54:45 -08:00
Chris Robinson
9228d13333 Use integer modulo for chorus and flanger 
Also simplify LFO coefficient calculations.
 2013-11-08 16:33:42 -08:00
Chris Robinson
bca959f372 Only use the inner loop for the chorus/flanger template method 2013-11-08 05:26:43 -08:00
Chris Robinson
d6eff654be Redo the autowah effect 
It's now a low-pass filter with a cutoff that varies according to the input
signal amplitude.

There remains issues with apparent feedback in the resonant frequency with high
resonance values. The actual cutoff range for the filter is also a guess.
 2013-11-07 17:46:14 -08:00
Chris Robinson
e0fecdcaaa Reimplement the compressor to work per-sample 2013-11-06 23:39:41 -08:00
Chris Robinson
a421e515be Use a helper macro for pi*2 2013-10-08 16:31:23 -07:00
Chris Robinson
b42fcce014 Use inline initialization for effect state factory vtables 2013-10-07 14:49:36 -07:00
Chris Robinson
fc31a41473 Constify the effect parameter of effect getters 2013-10-07 12:56:41 -07:00
Chris Robinson
997f6228de Use the UNUSED macro in the effects 2013-10-07 08:34:54 -07:00
Chris Robinson
79edd2cf3b Use a macro for the silence threshold 2013-10-06 17:25:47 -07:00
Chris Robinson
41175ec84c Implement the Compressor effect 2013-10-03 07:55:12 -07:00
Chris Robinson
2e605590a2 Convert autowah.c line-endings 2013-10-03 05:04:39 -07:00
Chris Robinson
764ea95781 Use helpers to set channel gain arrays 
Also avoid unnecessary clearing.
 2013-10-03 05:02:16 -07:00
Chris Robinson
99fa5911bc Implement the Autowah effect. 2013-10-03 03:37:03 -07:00
Chris Robinson
2f676832bc Avoid a divide-by-0 when distortion edge is 1 2013-09-04 15:46:05 -07:00
Chris Robinson
2219ce2475 Implement master high-pass filter for EAXREVERB 2013-07-21 22:12:50 -07:00
Chris Robinson
51791e6a54 Remove an unused function 2013-07-21 03:22:14 -07:00
Chris Robinson
817ca82e4b Fix input and feedback in the echo effect 2013-06-10 05:57:27 -07:00
Chris Robinson
647398d7c6 Use ALfilterState for the distortion effect filters 2013-06-06 03:24:44 -07:00
Chris Robinson
a371de080b Silence some clang warnings 2013-06-05 01:52:49 -07:00
Chris Robinson
a7a3d1e194 Avoid an unnecessary loop 2013-05-29 22:34:57 -07:00
Chris Robinson
764e3aa496 Fix up the naming convention of effect methods 2013-05-29 11:17:45 -07:00
Chris Robinson
e96cc656e9 Use C99's inline instead of __inline 2013-05-28 22:27:07 -07:00
Chris Robinson
48aa1e10d6 Use the high-shelf filter in place of low-pass 
They effectively both work to lower (or raise) high frequencies. However, the
high-shelf performs better when gain=1.
 2013-05-28 10:57:38 -07:00
Chris Robinson
6556626055 Simplify and fix some filter gain calculations 2013-05-27 21:57:22 -07:00
Chris Robinson
59a38442ac Use ALfilterState for the modulator high pass filter 2013-05-27 21:24:28 -07:00
Chris Robinson
0c7c5327c9 Use ALfilterState for the master echo and reverb filters 2013-05-27 19:55:00 -07:00
Chris Robinson
b1ae44206f Move ALEQFilter to alFilter.c/h and rename it to ALfilterState 2013-05-27 15:32:02 -07:00
Chris Robinson
334a7c1d59 Cleanup the ALeffectStateFactory_create methods 
Get rid of the ALeffectStateFactory_create macro, and use the VCALL_NOARGS
helper (requires adding the 'this' factory parameter).
 2013-05-27 13:16:17 -07:00
Chris Robinson
06c8442af6 Rename a variable 2013-05-26 17:10:57 -07:00
Chris Robinson
0a4be3470e Pre-apply the a[0] EQ filter coefficient 
Saves 20 fp divisions per sample
 2013-05-26 17:04:45 -07:00
Chris Robinson
82caba6bbe Use the helper macros in more places 2013-05-26 08:54:34 -07:00
Chris Robinson
8808159d55 Add helper macros to set an error and return, and use it in a few places 2013-05-26 00:01:07 -07:00