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* Use a loop to apply NFC filtersChris Robinson2017-03-251-30/+15
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* Use ALsizei for more index lookupsChris Robinson2017-03-241-15/+15
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* Properly calculate the echo dampingChris Robinson2017-03-241-1/+1
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* Fix setting Ambi formats for loopback devicesChris Robinson2017-03-211-1/+1
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* Use an atomic flag to test if a source needs to updateChris Robinson2017-03-201-1/+1
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* Make DataPosInt an ALsizeiChris Robinson2017-03-201-15/+16
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* Use proper bools for boolean statesChris Robinson2017-03-201-12/+11
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* Don't defer source state or offset changesChris Robinson2017-03-191-32/+3
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* Fix alcGetInteger64vSOFT to handle ambisonic attributesChris Robinson2017-03-181-14/+28
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* Replace a couple ALuint with ALsizeiChris Robinson2017-03-171-2/+2
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* Fix NFC filter to set the correct center frequencyChris Robinson2017-03-161-13/+9
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* Increase the filter slope to -12dB/octaveChris Robinson2017-03-162-9/+9
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* Check usability of MixHrtf_Neon before MixHrtf_SSEChris Robinson2017-03-141-4/+4
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* Remove a couple unneeded typedefsChris Robinson2017-03-141-23/+25
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* Store the HRIR coeff pointer and delays directly in MixHrtfParamsChris Robinson2017-03-123-7/+12
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* Rework HRTF coefficient fadingChris Robinson2017-03-119-263/+96
| | | | | | | | | | | | | | | This improves fading between HRIRs as sources pan around. In particular, it improves the issue with individual coefficients having various rounding errors in the stepping values, as well as issues with interpolating delay values. It does this by doing two mixing passes for each source. First using the last coefficients that fade to silence, and then again using the new coefficients that fade from silence. When added together, it creates a linear fade from one to the other. Additionally, the gain is applied separately so the individual coefficients don't step with rounding errors. Although this does increase CPU cost since it's doing two mixes per source, each mix is a bit cheaper now since the stepping is simplified to a single gain value, and the overall quality is improved.
* Make the voice's 'moving' state a bitflagChris Robinson2017-03-111-2/+2
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* Allocate as many channels for DirectHrtfState as neededChris Robinson2017-03-114-9/+10
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* Dynamically allocate the device's HRTF stateChris Robinson2017-03-104-73/+80
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* Fix building on MSVCChris Robinson2017-03-101-1/+1
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* Fix building without C11Chris Robinson2017-03-101-1/+2
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* Implement NFC filters for Ambisonic renderingChris Robinson2017-03-104-76/+235
| | | | | | | | | | | | | | NFC filters currently only work when rendering to ambisonic buffers, which includes HQ rendering and ambisonic output. There are two new config options: 'decoder/nfc' (default on) enables or disables use of NFC filters globally, and 'decoder/nfc-ref-delay' (default 0) specifies the reference delay parameter for NFC-HOA rendering with ambisonic output (a value of 0 disables NFC). Currently, NFC filters rely on having an appropriate value set for AL_METERS_PER_UNIT to get the correct scaling. HQ rendering uses the averaged speaker distances as a control/reference, and currently doesn't correct for individual speaker distances (if the speakers are all equidistant, this is fine, otherwise per-speaker correction should be done as well).
* Add an NFC filter implementationChris Robinson2017-03-092-0/+459
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* Remove an unnecessary variableChris Robinson2017-03-091-2/+1
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* Remove unnecessary atomic membersChris Robinson2017-03-081-109/+86
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* Store the channel count and sample size in the voiceChris Robinson2017-03-071-2/+2
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* Don't modify the source state in the mixerChris Robinson2017-03-071-1/+0
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* Make the voice's source pointer atomicChris Robinson2017-03-052-7/+7
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* Add a boolean to specify if a voice should be playingChris Robinson2017-03-021-10/+9
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* Increment MixCount in UpdateClockBaseChris Robinson2017-02-281-1/+4
| | | | This is to protect clocktime reads since the backend lock won't protect it.
* Dynamically allocate the channel delay buffersChris Robinson2017-02-283-6/+64
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* Remove an unneeded functionChris Robinson2017-02-283-24/+7
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* Start a ALC_SOFT_loopback2 extensionChris Robinson2017-02-281-50/+190
| | | | | | | | | | | | | | | | | | | | | | This extends the base ALC_SOFT_loopback extension with support for B-Format. When ALC_FORMAT_CHANNELS_SOFT is set to ALC_BFORMAT3D_SOFT, then additional attributes must be specified. ALC_AMBISONIC_LAYOUT_SOFT must be set to ALC_ACN_SOFT or ALC_FUMA_SOFT for the desired channel layout, ALC_AMBISONIC_SCALING_SOFT must be set to ALC_N3D_SOFT, ALC_SN3D_SOFT, or ALC_FUMA_SOFT for the desired channel scaling/normalization scheme, and ALC_AMBISONIC_ORDER_SOFT must be set to an integer value greater than 0 for the ambisonic order (maximum allowed is implementation-dependent). Note that the number of channels required for ALC_BFORMAT3D_SOFT is dependent on the ambisonic order. The number of channels can be calculated by: num_channels = (order+1) * (order+1); /* or pow(order+1, 2); */ In addition, a new alcIsAmbisonicFormatSupportedSOFT function allows apps to determine which layout/scaling/order combinations are supported by the loopback device. For example, alcIsAmbisonicFormatSupported(device, ALC_ACN_SOFT, ALC_SN3D_SOFT, 2) will check if 2nd order AmbiX (ACN layout and SN3D scaling) rendering is supported for ALC_BFORMAT3D_SOFT output.
* Use a variable counter for an array size limitChris Robinson2017-02-281-21/+13
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* Don't use the mutex in the base getClockLatency implementationChris Robinson2017-02-281-3/+8
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* Print WARNs when a device or context error is generatedChris Robinson2017-02-271-0/+1
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* Use separate enums for the ambisonic channel order and normalizationChris Robinson2017-02-273-11/+24
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* Move the current buffer queue entry and play position to the voiceChris Robinson2017-02-273-25/+24
| | | | | | | | | | | | | | This has a couple behavioral changes. First and biggest is that querying AL_BUFFERS_PROCESSED from a source will always return all buffers processed when in an AL_STOPPED state. Previously all buffers would be set as processed when first becoming stopped, but newly queued buffers would *not* be indicated as processed. That old behavior was not compliant with the spec, which unequivocally states "On a source in the AL_STOPPED state, all buffers are processed." Secondly, querying AL_BUFFER on an AL_STREAMING source will now always return 0. Previously it would return the current "active" buffer in the queue, but there's no basis for that in the spec.
* Ensure a non-playing or -paused source does not use a mixing voiceChris Robinson2017-02-252-2/+6
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* Remove an unused functionChris Robinson2017-02-232-6/+0
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* Remove CalcXYZCoeffs and inline CalcAngleCoeffsChris Robinson2017-02-235-21/+13
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* Alter how panpot/pair-wise panning worksChris Robinson2017-02-232-32/+22
| | | | | | | | | | | | | | | | | | | This change allows pair-wise panning to mostly go through the normal ambisonic panning methods, with one special-case. First, a term is added to the stereo decoder matrix's X coefficient so that a centered sound is reduced by -3dB on each output channel. Panning in front creates a similar gain response to the typical L = sqrt(1-pan) R = sqrt(pan) for pan = [0,1]. Panning behind the listener can reduce (up to) an additional -10dB, creating a audible difference between front and back sounds as if simulating head obstruction. Secondly, as a special-case, the source positions are warped when calculating the ambisonic coefficients so that full left panning is reached at -30 degrees and full right at +30 degrees. This is to retain the expected 60-degree stereo width. This warping does not apply to B-Format buffer input, although it otherwise has the same gain responses.
* Rename stereo-panning option to stereo-encodingChris Robinson2017-02-222-11/+11
| | | | Also rename the 'paired' value to 'panpot', and make it the default.
* Limit filter gains to -24dBChris Robinson2017-02-224-39/+33
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* Reduce the default period count to 3Chris Robinson2017-02-221-1/+1
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* Don't remove a period from the OSS bufferChris Robinson2017-02-221-11/+4
| | | | | Since we're now waiting for space to be available before mixing, the mixing buffer isn't adding another period.
* Fix OpenSL latency calculationChris Robinson2017-02-221-2/+2
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* Reduce some codeChris Robinson2017-02-211-61/+33
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* Make the "sends" config option act as a limitChris Robinson2017-02-211-8/+16
| | | | | Instead of forcing the device to always use the specified send count, it simply limits requests to it.
* Increase the default effect slot and send countChris Robinson2017-02-211-13/+15
| | | | | | | | | | The default number of auxiliary effect slots is now 64. This can still be raised by the config file without a hard maximum, but incurs processing cost for each effect slot generated by the app. The default number of source sends is now actually 2, as per the EFX docs. However, it can be raised up to 16 via ALC_MAX_AUXILIARY_SENDS attribute requests, rather than the previous 4.
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