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126 Commits

Author SHA1 Message Date
Chris Robinson
f9e6fbaeff Use amplitude-matching HF scaling for non-FOA HRTF output 2022-08-15 12:54:34 -07:00
Chris Robinson
a8491ae513 Update in incorrect comment 2022-08-15 09:09:52 -07:00
Chris Robinson
4f346caea3 Update some arrays in preparation for fourth order support 2022-08-14 00:56:38 -07:00
Chris Robinson
7e5dd41968 Add an option for higher quality UHJ filters 2022-08-08 03:44:25 -07:00
Chris Robinson
250f162496 Parameterize the UHJ filter length 2022-08-07 13:09:12 -07:00
Chris Robinson
a1faa5d311 Change an inline function to a class method 2022-08-02 18:26:49 -07:00
Chris Robinson
a700edc171 Check the channel count for a valid DecoderView 
Ambisonic decoders can be zeroth order, but they need at least one output
channel.
 2022-08-02 18:26:49 -07:00
Chris Robinson
af5d4fb77d Don't store and manage wet buffers separately 2022-07-15 06:58:15 -07:00
Chris Robinson
edadd221ea Add a speaker-dist config option 
This can be used to specify an average speaker distance without having the
modify the decoder config files. This also sets a default value of 1, letting
near-field effects work (if imprecisely) without an explicitly-configured
distance.
 2022-07-07 14:58:09 -07:00
Chris Robinson
593966c8db Handle 3D7.1 as a separate channel configuration 
It's treated as 5.1 + 2 aux channels. This allows AL_DIRECT_CHANNELS_SOFT to
behave better, not forwarding rear left/right channel inputs to lower front and
upper rear, and allows reporting a more appropriate output mode to the app
instead of 7.1.
 2022-04-26 23:32:15 -07:00
Chris Robinson
6bc1787a3b Make and use a Default enum for StereoEncoding 2022-03-29 11:48:57 -07:00
Chris Robinson
f8ac1ffe80 Get rid of MathDefs 2022-01-27 02:59:07 -08:00
Chris Robinson
43ec687ee9 Add a third-order ambisonic decoder for HRTF 
Using the 20-channel dodecahedron, seems to be good enough to handle 16-channel
third-order ambisonics.
 2022-01-05 20:32:03 -08:00
Chris Robinson
c77fd6540c Update the HRTF second-order ambisonic decoder 
This only needs 14 virtual channels instead of 20.
 2022-01-04 19:27:29 -08:00
Chris Robinson
5e3fcb3a93 Avoid initializing the NFC filter for every voice channel 
It can be initialized once with the device's speaker distance since it won't
change in between resets, then copied into the voice where it can be adjusted
as needed.
 2021-12-11 21:42:34 -08:00
Chris Robinson
a8ea3cad22 Adjust the crossover frequency for HRTF ambisonic decoding 2021-12-08 18:17:16 -08:00
Chris Robinson
49a36334bd Use a tri-state optional for the stereo output mode 2021-10-24 11:51:39 -07:00
Chris Robinson
096bed35fa Pass a parameter to aluInitRenderer to specify UHJ output 2021-10-23 11:37:46 -07:00
Chris Robinson
d0e5e138e2 Use a flag to indicate headphone-like output 2021-10-23 07:51:06 -07:00
Chris Robinson
0e93fc53f4 Don't reset the ambisonic layout and scale with stereo output 2021-10-23 05:48:47 -07:00
Chris Robinson
d5dc2828bf Don't pass the whole decoder to InitDistanceComp 2021-10-23 03:57:49 -07:00
Chris Robinson
aa92c6c0a8 Fix the ambisonic scaling used by custom decoders 2021-10-23 03:24:51 -07:00
Chris Robinson
f963a2c543 Remove some lingering mentions of surround51rear 2021-10-21 07:38:57 -07:00
Chris Robinson
0a0849db99 Use an optional bool instead of two tri-state enums 2021-07-31 14:24:49 -07:00
Chris Robinson
29fba79cd5 Avoid 5.1Rear as its own channel configuration 
It messes with 5.1 sources using direct channels, and the surround channels are
supposed to map to the side labels. Individual backends can deal with the
channel order/label differences, as they already do to a degree.
 2021-07-30 07:38:26 -07:00
Chris Robinson
486eca8ce6 Remove an unused variable 2021-07-30 06:26:53 -07:00
Chris Robinson
d998c03a27 Add a UHJ-specific coefficient scaling array 2021-07-13 06:31:13 -07:00
Chris Robinson
d38c8419c7 Update the 5.1+center decoder and use it by default 
The itu5.1-nocenter preset is the same as the previous default, so it can still
be used for people that prefer it. But this new one purportedly has better
panning and positioning responses in listening tests, which initial impressions
concur with.
 2021-06-30 15:53:15 -07:00
Chris Robinson
c09c94de25 Allow decoders to specify the coefficient scaling 2021-06-25 08:10:41 -07:00
Chris Robinson
247a149115 MSVC doesn't like the decltype 2021-06-23 13:30:17 -07:00
Chris Robinson
9a7bca1116 Add wrapper methods for getting device config values 2021-06-23 10:45:24 -07:00
Chris Robinson
5b2489c3e8 Convert AmbDecConf to DecoderConfig for loading 
This keeps AmbDecConf uses confined to multi-channel panning initialization,
and avoids spreading conversions and maps all over.
 2021-06-23 09:44:58 -07:00
Chris Robinson
2b7c446363 Support built-in 3D ambisonic decoders 2021-06-23 03:22:54 -07:00
Chris Robinson
8d868ff33f Fix setting the channel distance compensation buffers 2021-05-20 23:48:43 -07:00
Chris Robinson
e3c0b60cc6 Rename alcontext.h and move some functions to context.cpp 2021-04-27 19:04:45 -07:00
Chris Robinson
06dcfc3fcf Rename alcmain.h to device.h 2021-04-27 16:40:22 -07:00
Chris Robinson
2479483645 Move bformatdec to core 2021-04-25 18:08:08 -07:00
Chris Robinson
0fe38c053d Move some functions to core 
And clean up more includes
 2021-04-25 11:36:37 -07:00
Chris Robinson
b54bb388a3 Create a base the ALCdevice and ALCcontext structs 
A base that contains the API-agnostic data, with ALCdevice and ALCcontext being
for AL-specific data.
 2021-04-24 08:28:13 -07:00
Chris Robinson
7387148006 Use the root mean square for the HRTF B-Format HF scale 
For the second-order decoder. Since the delays are adjusted to avoid most high
frequency phase cancelation, the energy-based scaling with the number of
channels used creates a significant HF increase. Using the RMS-based scaling
seems to create a more level response, though it's not perfect either. More
testing and measurements may be needed.
 2021-04-24 03:12:05 -07:00
Chris Robinson
65b85f7cb9 Move hrtf.cpp/h to core 2021-04-22 10:26:20 -07:00
Chris Robinson
d6d6fd7378 Avoid using config methods in hrtf.cpp 2021-04-22 10:13:49 -07:00
Chris Robinson
c6dbc487b3 Rename Uhj2Encoder to UhjEncoder 2021-04-01 05:37:54 -07:00
Chris Robinson
9665171ea3 Clean up some formatting 2021-02-16 05:48:42 -08:00
Chris Robinson
20f5e7c1fa Avoid global constexpr arrays 2021-01-21 04:03:30 -08:00
Chris Robinson
04358890d9 Use a unique_ptr to hold DistanceComp data 2020-12-27 11:30:45 -08:00
Chris Robinson
e20143fcc4 Move the WetBuffer reference to EffectSlot 2020-12-27 00:14:58 -08:00
Chris Robinson
8850a3f730 Combine variable terms separate from the scaling weights 2020-12-26 06:27:49 -08:00
Chris Robinson
8a86ec8ac5 Add a crossover frequency field for the device 
Used when upsampling low-order ambisonic signals to higher order. Rather than a
hardcoded 400hz, it ensures a consistent crossover point when an ambdec
configuration is used. It can also allow for an alsoft config option.
 2020-12-26 05:23:08 -08:00
Chris Robinson
5f233a2c24 Use more constexpr variables instead of macros 2020-12-25 20:52:18 -08:00