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336 Commits

Author SHA1 Message Date
Chris Robinson
c8d385c998 Use a helper to tell if an effect type is reverb 2011-07-05 04:36:41 -07:00
Chris Robinson
4c35bfbc10 Read the source's RoomRolloffFactor once 2011-07-05 03:55:16 -07:00
Chris Robinson
83e322c5f3 Force front-centered for mono sounds that comes from the listener under HRTF 2011-07-05 03:36:14 -07:00
Chris Robinson
b2d5367830 Fix rolloff calculations for auxiliary sends 2011-07-04 07:32:23 -07:00
Chris Robinson
d307ee8c2f Implement a lerped lookup of the HRTF coefficients/delays 
Code supplied by Christopher Fitzgerald
 2011-07-04 07:20:38 -07:00
Chris Robinson
202f57552a Use a proper enum for the distance model 2011-07-03 19:39:19 -07:00
Chris Robinson
5ba864b6da Calculate the wet gain decay time attenuation with linear values 2011-07-03 19:22:14 -07:00
Chris Robinson
30e97d5223 Read the RoomRolloffFactor property with the other properties 2011-07-03 03:34:40 -07:00
Chris Robinson
ac7ca07221 Get rid of a couple typedefs 2011-07-02 21:33:53 -07:00
Chris Robinson
4c94ba6d8a Properly save the original FPU state when using _controlfp 2011-07-02 02:56:06 -07:00
Chris Robinson
a5ccae5779 Do air absorption with linear gain values 
This copies the way the calculation is done with the wet path
 2011-07-01 02:30:15 -07:00
Chris Robinson
048aee66cf Avoid accessing source properties more than once when updating parameters 2011-07-01 01:46:56 -07:00
Chris Robinson
723755788d Rename Suspend/ProcessContext since they are locking a mutex 2011-06-30 18:10:04 -07:00
Chris Robinson
032d0836a7 Declare some variables closer to where they're used 2011-06-29 23:32:48 -07:00
Chris Robinson
5736bbc3e4 Add a source property to skip channel virtualization for multi-channel buffers 
With virtualization disabled, channels are mapped directly from input to output
and any input channel that is missing an output is dropped. Any virtualization
effects (such as HRTF filters) for positional cues are also skipped.

The idea is to allow applications a way to play pre-filtered audio that channel
vitualization effects could interfere with.
 2011-06-29 23:18:49 -07:00
Chris Robinson
1b773a8585 Select the correct resampler 2011-06-28 00:30:00 -07:00
Chris Robinson
efaaf9b5f9 Don't bother with a per-context lock for disconnecting devices 2011-06-26 01:26:50 -07:00
Chris Robinson
1fc44d5788 Select the mixer during a source update 2011-06-25 00:13:56 -07:00
Chris Robinson
3dcfd0dc98 Use 'Distance' for the unclamped distance value, since the clamped value is 
only used for distance attenuation
 2011-06-21 12:55:21 -07:00
Chris Robinson
40b8934487 Calculate wet gain when needed 2011-06-18 16:45:26 -07:00
Chris Robinson
753e64c76c Do stereo duplication in two passes 
First using the rear channels, then using the normal stereo channels
 2011-06-17 16:20:18 -07:00
Chris Robinson
8bee7a2b7f Don't suspend individual contexts when updating 2011-06-16 05:29:38 -07:00
Chris Robinson
7ddfacb58f Use a minimum phase HRTF data set 
This reduces the coefficient size from 128 down to 32, with a set of delays
 2011-06-03 01:06:00 -07:00
Chris Robinson
7da2eea8f0 Add a 5.1 device format that uses side channels instead of back 2011-05-28 19:35:32 -07:00
Chris Robinson
6b6a7757ce Clear HRTF coefficients for the LFE channel 2011-05-25 19:04:19 -07:00
Chris Robinson
af005668da Avoid using an unnecessary temp variable 2011-05-21 23:14:55 -07:00
Chris Robinson
a9d9553fff Use a multi-dimensional array for the panning LUT 2011-05-21 17:45:54 -07:00
Chris Robinson
5cdf774ea7 Use the stored sample and channel count 2011-05-21 17:36:54 -07:00
Chris Robinson
35a0430c81 Store the separate effect parameters in a union 2011-05-20 09:36:36 -07:00
Chris Robinson
cbbb04eb40 Always fully normalize the position when using HRTF 2011-05-20 07:58:05 -07:00
Chris Robinson
7396aaf2c2 Fix HRTF elevation calculation 2011-05-19 17:57:14 -07:00
Chris Robinson
7210796cb8 Combine multiple loops 2011-05-15 02:12:42 -07:00
Chris Robinson
949cfe2ceb Re-enable duplication for stereo sounds 2011-05-15 00:18:28 -07:00
Chris Robinson
674b14faa3 Make a couple more pointers restricted 2011-05-07 04:32:53 -07:00
Chris Robinson
a8fdcd30a5 Some minor cleanups 2011-05-07 04:31:43 -07:00
Chris Robinson
db3cb23c1d Add an option to reverse Z panning of mono sources 
Applications that are not built around OpenAL's orientation system need to
convert their given vectors to it. Depending on how this is done, it can lead
to proper stereo (left-right) panning with improper surround sound (front-back)
panning, which thusly sounds correct with stereo output and incorrect with 4+
channel output.

This option is intended to help fix playback of such applications on surround
sound systems, without having to resort to forcing stereo output.
 2011-05-07 03:54:46 -07:00
Chris Robinson
7972f7a2da Combine duplicate arrays 2011-05-06 23:25:15 -07:00
Chris Robinson
8c3d50be28 Skip LFE with HRTF output 2011-05-06 04:46:21 -07:00
Chris Robinson
c2a6efc77a Use the panning algorithms to build the multi-channel source matrix 
This prevents the stereo-duplication option from working. It should hopefully
be restored soon.
 2011-05-06 04:37:10 -07:00
Chris Robinson
6928487aa1 Remove some redundancy 2011-05-06 02:53:22 -07:00
Chris Robinson
f97eca34df Minor source update fixes 2011-05-06 00:51:12 -07:00
Chris Robinson
1363e044ac Remove the head_dampen option 
Now that HRTF is properly supported, it's not needed
 2011-05-06 00:38:10 -07:00
Chris Robinson
9967d4eadd Mark a couple more pointers as restricted 2011-05-06 00:33:58 -07:00
Chris Robinson
e2850df07e Use the same filters for mono sources and multi-channel 2011-05-03 16:18:46 -07:00
Chris Robinson
9a28402b90 Fix non-spatialized mono sources 2011-05-02 18:33:32 -07:00
Chris Robinson
f843b7e2e3 Implement HRTF mixers for multi-channel sources 2011-05-02 02:22:30 -07:00
Chris Robinson
eea86ab891 Use flags instead of separate bools 2011-05-01 18:18:37 -07:00
Chris Robinson
56d9418119 Add an HRTF filter for mono sources 
The data is based on the KEMAR HRTF data provided by MIT, which can be found at
<http://sound.media.mit.edu/resources/KEMAR.html>. The compact measurements
were used. See hrtf_tables.inc for more information.

The filter is only available for stereo output, using a 44100hz playback rate.
Note also that it currently only applies to mono sounds, and the cf_level and
head_dampen config options are ignored while it is active.
 2011-05-01 13:59:44 -07:00
Chris Robinson
10a9753183 Add a compatibility option to treat cone angles as half angles 
All previous versions of the library treated the source cone angles as half
angles, which is contrary to the spec. Setting the __ALSOFT_HALF_ANGLE_CONES
environment variable to "true" or "1" restores the buggy behavior for
compatibility with applications that expect it.

This is not a config file option because new apps should not be made to depend
on the old behavior.
 2011-04-22 23:17:27 -07:00
Chris Robinson
1e8718fe87 Convert full-width cone angle source properties to half-width 
The spec intends the property values to be the full angle encompassed by the
cones, but the calculation interprets them as the angle from the center
point.
 2011-04-22 22:59:58 -07:00