Chris Robinson
3056f91ec5
Apply the dry filter to multi-channel sources
...
Unlike mono sources, they use 2 chained one-pole filters instead of 4
2008-12-10 11:54:13 -08:00
Chris Robinson
55b9ccc2de
Implement AL_EXTX_source_distance_model
...
As with other EXTX extensions, this is subject to change and removal as the
spec gets worked on
2008-11-25 18:56:10 -08:00
Chris Robinson
181eb95b13
Use a better dB-to-linear gain convertion
2008-11-16 00:57:35 -08:00
Chris Robinson
c0ccd31a3e
Implement a new reverb effect
...
Code created and graciously provided by Christopher Fitzgerald
2008-11-16 00:29:49 -08:00
Chris Robinson
010f7d12f4
Don't ramp gains when starting a sound from the beginning
2008-11-13 05:48:38 -08:00
Chris Robinson
b91c2e4a99
Include float.h if it exists, for _RC_CHOP and _MCW_RC
2008-10-14 09:47:32 -07:00
Chris Robinson
59a71b1454
Remove another unused source member
2008-10-10 01:31:31 -07:00
Chris Robinson
36f133a5ae
Use a modulo to keep the buffer position in range for looping sources
...
A high pitch and low buffer size can cause a lot of unnecessary iterations
otherwise, that just decrement the position
2008-10-10 01:13:32 -07:00
Chris Robinson
74a58c0d09
Clamp source position to the buffer size when it stops
2008-10-09 23:54:31 -07:00
Chris Robinson
bfa1107781
Remove unneeded source member variable
2008-10-09 23:44:48 -07:00
Chris Robinson
6e9e8239ef
Only send one channel through the wet path
2008-10-09 04:02:34 -07:00
Chris Robinson
af9932d28b
Increase max pitch to 65536
...
This should be safe now
2008-10-09 02:50:00 -07:00
Chris Robinson
87ff8a65e9
Simplify the lerp function
2008-10-09 02:32:47 -07:00
Chris Robinson
7b6f207790
Don't apply the wet path for multi-channel buffers
2008-10-09 02:28:52 -07:00
Chris Robinson
8672008e43
Skip mixing if the read position is beyond the end of the buffer
2008-10-09 01:17:39 -07:00
Chris Robinson
c8cd193346
The wet path should be silent if no effect is set on the slot
2008-10-09 01:07:02 -07:00
Chris Robinson
be292e5f0b
Don't hold the whole-number position in the fractional value
...
This will help prevent overflows when the max pitch is increased
2008-10-02 23:53:46 -07:00
Chris Robinson
3863dcc9cb
Use a new low-pass filter, based on the I3DL2 spec
...
Many thanks to Christopher Fitzgerald, for helping with it
2008-10-02 22:20:42 -07:00
Chris Robinson
6567cdd7b5
Air absorption factor is applied to the dB value, not linear gain
2008-09-22 17:01:47 -07:00
Chris Robinson
4a530e2146
Fixup some source parameter calculations
2008-09-16 07:36:48 -07:00
Chris Robinson
6bfdb57a5b
Use a 12dB/oct rolloff instead of 24 for the lowpass filter
2008-09-13 02:46:14 -07:00
Chris Robinson
fa76168683
Clear the end of the buffer when at the end of the queue and not looping
2008-09-06 14:08:53 -07:00
Chris Robinson
db541f3cfa
Remove unneeded source struct member
2008-08-15 17:43:07 -07:00
Chris Robinson
ac8c082b89
Overwrite the input wet sample with the output
2008-08-14 20:44:55 -07:00
Chris Robinson
22557070ec
Ramp channel gains to remove pops and clicks from abrupt changes
...
Thanks to Christopher Fitzgerald for helping me work on it
2008-08-14 05:43:52 -07:00
Chris Robinson
ef59901e7c
Set FPU mode to round toward zero for mixing
2008-08-08 07:32:21 -07:00
Chris Robinson
cfe620ccb5
Remove unnecessary casting
2008-08-08 00:21:25 -07:00
Chris Robinson
453b015225
Prevent a 0 or negative increment for the buffer position
...
Thanks to Christopher Fitzgerald for pointing these last two problems out
2008-08-05 20:51:30 -07:00
Chris Robinson
d3e5fcd13e
Fix some calculations for the reverb buffer
2008-07-26 01:57:04 -07:00
Chris Robinson
3e0f9cc716
Make the filter processing function inline
2008-07-26 00:58:54 -07:00
Chris Robinson
c7e49c9f57
Implement yet another low-pass filter
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This one using the Butterworth IIR filter design
2008-07-25 19:31:12 -07:00
Chris Robinson
559c786d0c
Specify padding per buffer, and make sure it's large enough for the filter step
2008-07-24 00:41:25 -07:00
Chris Robinson
c3a7480961
Don't advertise extra samples for mixing
2008-07-23 23:27:38 -07:00
Chris Robinson
a75e75aef5
Implement an alternative low-pass filter
...
This method samples from the buffer so that it gets a time-correct 5khz stream,
which is subtracted from the original sample and has the high-frequency gain
applied, then added back.
A better method may be to average all the samples from the current one to the
one freq/5000 away, instead of bilinear filtering the two nearest freq/5000
apart. Processing cost will need to determine its viability
2008-07-23 22:29:53 -07:00
Chris Robinson
0042b1f80d
Implement doppler factor source property
2008-07-15 02:33:05 -07:00
Chris Robinson
6d416ee734
Add the reverb room rolloff to the source room rolloff, not override
2008-07-15 02:23:53 -07:00
Chris Robinson
f369be148f
Reduce the mix buffer sizes by half
...
Nearly 3MB is a bit much. Could reduce it further, but this is good enough for now.
2008-07-08 19:37:14 -07:00
Chris Robinson
3a09e446b3
Leave SourceToListener untransformed for use with untransformed velocities
...
Distance is also left untransformed so cone calculations with SoundToListener
are correct
2008-07-03 03:13:43 -07:00
Chris Robinson
fed346c285
Fix source calculations for AL_SOURCE_RELATIVE mode
...
Make sure the source position and direction are properly put into listener-
space before working with them, and don't calculate the listener velocity for
relative coordinates
2008-05-18 16:52:38 -07:00
Chris Robinson
49d9695ad9
Check the right struct member for the filter type
2008-04-12 07:25:18 -07:00
Chris Robinson
ec7f20644d
Fast float-to-int function is no longer needed
2008-02-08 21:03:48 -08:00
Chris Robinson
3d5fa91703
Remove unnecessary casting
2008-02-08 21:01:05 -08:00
Chris Robinson
b4ffdfab81
Add an option for duplicating stereo sources on the back speakers
2008-02-06 22:18:50 -08:00
Chris Robinson
e8b576bc25
Use the correct channel ordering for Windows
2008-01-27 07:04:13 -08:00
Chris Robinson
01404ed7af
Fix output channel order for 6.1 and 7.1
2008-01-27 06:49:48 -08:00
Chris Robinson
781e4e5be4
Remove an unneceesary pointer check and decrease indentation
2008-01-21 14:54:15 -08:00
Chris Robinson
f3dddb5e99
Remove unnecessary duplicate thunk lookups
2008-01-21 14:33:42 -08:00
Chris Robinson
9a5e892cad
Small formatting updates
2008-01-20 22:16:28 -08:00
Chris Robinson
0317362662
Remove duplicate function
2008-01-20 19:22:39 -08:00
Chris Robinson
6b403a76e8
Don't access ALSource for every sample mix
2008-01-20 19:20:24 -08:00
