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123 Commits

Author SHA1 Message Date
Chris Robinson
5a1abf6918 Use different parameters for HRTF mixers 2014-05-18 09:31:08 -07:00
Chris Robinson
29b5dae6aa Pass some DirectParams as function parameters 2014-05-18 08:59:10 -07:00
Chris Robinson
82dd2d875e Apply high-pass source filters as needed 2014-05-17 07:54:25 -07:00
Chris Robinson
0b5b39d5e6 Add a flag to specify when the low-pass filter needs to apply 2014-05-17 07:17:48 -07:00
Chris Robinson
d066c7b124 Better pack HRTF mixing properties 2014-05-03 18:59:26 -07:00
Chris Robinson
b2e533fbfc Clamp the current and target gain lower bound to epsilon 
Should give a bit more wiggle room for the gain stepping to get lower than the
silence threshold.
 2014-05-03 17:51:06 -07:00
Chris Robinson
59fc9aac0e Use C11 alignas when available 2014-04-19 02:11:04 -07:00
Chris Robinson
5e0fc84f49 Make HRTF stepping values per-channel 2014-04-05 10:24:13 -07:00
Chris Robinson
72986882f5 Remove the click removal buffers for auxiliary effect slots 2014-03-23 16:28:55 -07:00
Chris Robinson
52deb557d5 Add gain stepping to the send mixers 2014-03-23 16:11:21 -07:00
Chris Robinson
55f851093f Remove the now-unneeded click removal buffers for the device 
They are still there for auxiliary sends. However, they should go away soon
enough too, and then we won't have to mess around with calculating extra
"predictive" samples in the mixer.
 2014-03-23 07:31:33 -07:00
Chris Robinson
81e049bd47 Step mixing gains per-sample for non-HRTF mixing 
This fades the dry mixing gains using a logarithmic curve, which should produce
a smoother transition than a linear one. It functions similarly to a linear
fade except that

step = (target - current) / numsteps;
...
gain += step;

becomes

step = powf(target / current, 1.0f / numsteps);
...
gain *= step;

where 'target' and 'current' are clamped to a lower bound that is greater than
0 (which makes no sense on a logarithmic scale).

Consequently, the non-HRTF direct mixers do not do not feed into the click
removal and pending click buffers, as this per-sample fading would do an
adequate job of stopping clicks and pops caused by extreme gain changes. These
buffers should be removed shortly.
 2014-03-23 06:57:00 -07:00
Chris Robinson
0ce0a88fd6 Move the step counter and moving flag to DirectParams 2014-03-23 03:03:03 -07:00
Chris Robinson
b0d511a860 Store the HrtfState directly in the DirectParams 2014-03-23 02:45:50 -07:00
Chris Robinson
842aeb888b Move some HRTF and mixer structs to alu.h 2014-03-22 02:39:57 -07:00
Chris Robinson
6ee54fb1f3 Store some source mixing parameters in the active source struct 2014-03-19 13:14:11 -07:00
Chris Robinson
08dfbcfd5c Add min/max/clamp methods for doubles 2013-11-27 00:30:13 -08:00
Chris Robinson
d3c70e63b4 Use C99 inline in more places 2013-11-04 13:44:46 -08:00
Chris Robinson
a421e515be Use a helper macro for pi*2 2013-10-08 16:31:23 -07:00
Chris Robinson
11365b42c7 Use helper macros to convert between degrees and radians 2013-10-08 12:39:22 -07:00
Chris Robinson
79edd2cf3b Use a macro for the silence threshold 2013-10-06 17:25:47 -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
e96cc656e9 Use C99's inline instead of __inline 2013-05-28 22:27:07 -07:00
Chris Robinson
52efb8d7f4 Use restrict instead of RESTRICT 2013-05-22 15:11:39 -07:00
Chris Robinson
1fb9311d82 Lock the device before calling aluHandleDisconnect 
PulseAudio causes an assert if being relocked inside a callback on the worker
thread, where aluHandleDisconnect is called. We can assume it's already locked
there, so just make sure the device is locked before being calling it.
 2012-12-02 11:30:23 -08:00
Chris Robinson
e2e502970c Move some math functions to where they're used 2012-10-25 17:24:22 -07:00
Chris Robinson
c802bfccef Remove the float math wrapper functions 2012-10-25 14:16:35 -07:00
Chris Robinson
a14383d6cc Constify the direct and send parameters given to the mixer 2012-10-15 01:31:58 -07:00
Chris Robinson
f0d27e5f91 Remove the unused Device parameter 2012-10-14 11:29:28 -07:00
Chris Robinson
3240894cd5 Remove the now-unused Source parameter from the DryMix methods 2012-10-14 11:04:36 -07:00
Chris Robinson
25b8a95987 Check the distance against epsilon to determine if it matches 2012-10-12 07:10:51 -07:00
Chris Robinson
41b2c2f3bb Remove an unneeded parameter from the resampler 2012-09-27 02:46:15 -07:00
Chris Robinson
7635afcb52 Use a source param for the resampler and move them to the mixer source 2012-09-14 04:13:18 -07:00
Chris Robinson
4f70766b95 Move a couple macros to more appropriate headers 2012-09-14 02:52:37 -07:00
Chris Robinson
9f58edd7a8 Fix up some more header includes 2012-09-14 02:42:36 -07:00
Chris Robinson
0f3a575a09 Don't include alu.h in alMain.h 2012-09-14 02:14:29 -07:00
Chris Robinson
ec74fb9ba2 Enable flush-to-zero mode when possible 2012-09-14 01:10:19 -07:00
Chris Robinson
ff809f2271 Move a couple methods to where they're used 2012-09-12 07:57:50 -07:00
Chris Robinson
98ff6f990a Do the filtering separately from the mixing 2012-09-11 05:56:19 -07:00
Chris Robinson
4e440fff62 Remove a hack for MinGW 2012-09-10 00:19:13 -07:00
Chris Robinson
81208acd6e Add missing returns 2012-09-09 21:27:54 -07:00
Chris Robinson
f1ce139997 Use SSE to do 4 samples at once (non-HRTF direct mix), instead of to apply a matrix row 
MaxCHannels no longer needs to be a multiple of 4 now, either.
 2012-09-09 04:02:54 -07:00
Chris Robinson
2bf1979d4a Move the target effect slot to the SendParams struct 2012-09-08 22:32:30 -07:00
Chris Robinson
89cab3cd39 Remove STACK_DATA_SIZE in favor of BUFFERSIZE 2012-09-08 22:09:34 -07:00
Chris Robinson
1c03025090 Separate the resampling and mixing steps 2012-09-08 21:34:36 -07:00
Chris Robinson
de006947ac Increase MaxChannels to be a multiple of 4 2012-08-29 01:11:55 -07:00
Chris Robinson
ac4fc4026c Add a device method to retrieve the active latency 
This is effectively the time until the next update will be heard by the user,
or the closest approximation thereof, in nanoseconds.
 2012-08-17 13:38:52 -07:00
Chris Robinson
6bd535bed0 Use wrappers for float-typed math functions 2012-06-29 02:12:36 -07:00
Chris Robinson
524c88c402 Test the squared length of a vector before normalizing 2012-06-28 20:54:10 -07:00
Chris Robinson
583dc8dbca Don't use all caps for enum value names 2012-06-28 18:49:49 -07:00