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* Better pack HRTF mixing propertiesChris Robinson2014-05-031-24/+24
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* Clamp the current and target gain lower bound to epsilonChris Robinson2014-05-031-10/+10
| | | | | Should give a bit more wiggle room for the gain stepping to get lower than the silence threshold.
* Make HRTF stepping values per-channelChris Robinson2014-04-051-2/+2
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* Remove the click removal buffers for auxiliary effect slotsChris Robinson2014-03-231-38/+0
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* Add gain stepping to the send mixersChris Robinson2014-03-231-2/+42
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* Remove the now-unneeded click removal buffers for the deviceChris Robinson2014-03-231-47/+8
| | | | | | 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.
* Step mixing gains per-sample for non-HRTF mixingChris Robinson2014-03-231-15/+112
| | | | | | | | | | | | | | | | | | | | | | | | 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.
* Move the step counter and moving flag to DirectParamsChris Robinson2014-03-231-6/+15
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* Store the HrtfState directly in the DirectParamsChris Robinson2014-03-231-8/+7
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* Add a generic vector interface and use it for the active effect slotsChris Robinson2014-03-211-2/+2
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* Keep track of the mix countChris Robinson2014-03-191-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | The purpose of this is to provide a safe way to be able to "swap" resources used by the mixer from other threads without the need to block the mixer, as well as a way to track when mixes have occurred. The idea is two-fold: It provides a way to safely swap resources. If the mixer were to (atomically) get a reference to an object to access it from, another thread would be able allocate and prepare a new object then swap the reference to it with the stored one. The other thread would then be able to wait until (count&1) is clear, indicating the mixer is not running, before safely freeing the old object for the mixer to use the new one. It also provides a way to tell if the mixer has run. With this, a thread would be able to read multiple values, which could be altered by the mixer, without requiring a mixer lock. Comparing the before and after counts for inequality would signify if the mixer has (started to) run, indicating the values may be out of sync and should try getting them again. Of course, it will still need something like a RWLock to ensure another (non-mixer) thread doesn't try to write to the values at the same time. Note that because of the possibility of overflow, the counter is not reliable as an absolute count.
* Use a union to combine HRTF and non-HRTF mixer paramsChris Robinson2014-03-191-29/+29
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* Select the mixer when setting the mixer-specific parametersChris Robinson2014-03-191-39/+42
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* Store some source mixing parameters in the active source structChris Robinson2014-03-191-73/+76
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* Use a separate struct for tracking active sourcesChris Robinson2014-03-181-12/+17
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* Move HRTF macros and function declarations to a separate headerChris Robinson2014-02-231-0/+1
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* Remove an unnecessary special-case for the click removalChris Robinson2014-02-011-14/+1
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* Keep track of a device clock time, based on the number of samples processedChris Robinson2014-02-011-0/+8
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* Implement dry and wet mixers for NeonChris Robinson2014-01-261-0/+8
| | | | Code provided by Philippe Simons <[email protected]>.
* Move the base MidiSynth to a separate fileChris Robinson2013-12-171-1/+2
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* Create and use a MidiSynth on playback devicesChris Robinson2013-11-271-0/+3
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* Add min/max/clamp methods for doublesChris Robinson2013-11-271-0/+4
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* Use C99 inline in more placesChris Robinson2013-11-041-0/+22
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* Rename VCALL and VCALL0 to V and V0Chris Robinson2013-11-021-6/+6
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* Modify how VCALL is handledChris Robinson2013-10-281-6/+6
| | | | | | | | | | | Now instead of specifying the arguments as a third argument to the macro, like VCALL(object,function,(arg1, arg2)); they are specified separately after the macro, like VCALL(object,function)(arg1, arg2); Also, VCALL_NOARGS has been removed in favor of VCALL0, which behaves like above but expects an empty argument list (a separate macro is needed to work around preprocessor limitations).
* Use helper macros to convert between degrees and radiansChris Robinson2013-10-081-30/+30
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* Don't store the effect slot in SendParamsChris Robinson2013-10-061-5/+24
| | | | This makes it much more like DirectParams.
* Rename Filter param member to LpFilterChris Robinson2013-10-061-4/+4
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* Use a separate value for the maximum buffer channelsChris Robinson2013-07-231-2/+2
| | | | | | | Unlike the device, input buffers are accessed based on channel numbers instead of enums. This means the maximum number of channels they hold depends on the number of channels any one format can have, rather than the total number of recognized channels. Currently, this is 8 for 7.1.
* Improve the source's low-pass filter responseChris Robinson2013-07-201-4/+4
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* Limit the source step to 10Chris Robinson2013-07-021-14/+4
| | | | | | | | | This means the combination of the buffer frequency, source pitch, and doppler shift can't exceed 10x the device playback frequency. This is needed to keep the mixer from starving with a really high increment, causing small DstBufferSize values that require a lot of iterations.
* Fix up the naming convention of effect methodsChris Robinson2013-05-291-4/+4
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* Use C99's inline instead of __inlineChris Robinson2013-05-281-12/+12
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* Use the high-shelf filter in place of low-passChris Robinson2013-05-281-4/+4
| | | | | They effectively both work to lower (or raise) high frequencies. However, the high-shelf performs better when gain=1.
* Simplify and fix some filter gain calculationsChris Robinson2013-05-271-6/+12
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* Use ALfilterState for the source direct and send filtersChris Robinson2013-05-271-22/+17
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* Use generic VCALL[_NOARGS] macros instead of type-specific wrappersChris Robinson2013-05-271-6/+6
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* Use an ALeffectProps union to store the effect propertiesChris Robinson2013-05-251-6/+6
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* Use restrict instead of RESTRICTChris Robinson2013-05-221-5/+5
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* Use a properly-defined history for the FILTER structChris Robinson2013-05-211-5/+9
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* Fix overflow issues when converting float to intChris Robinson2013-04-221-7/+10
| | | | | | | | 32-bit floats can only reach between -16777215...+16777215 (25 bits) before it starts losing whole-number accuracy. Some compiler optimizations may break trying to multiply a float by 2147483647.0 when the result is given right to a float parameter, causing it instead to multiply by the nearest representable float value, 2147483648.0.
* Add a missing cast to silence MSVCChris Robinson2013-03-221-1/+1
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* Use less math to clamp floats to -1...+1Chris Robinson2013-03-171-3/+3
| | | | | The previous code could have issues as precision lowers. This should hopefully work better while only using one if check instead of two.
* Use +/-90 degrees for stereo sources with non-HRTF stereo output.Chris Robinson2012-12-041-1/+9
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* Lock the device before calling aluHandleDisconnectChris Robinson2012-12-021-2/+0
| | | | | | 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.
* Use an array to specify the offset for each channel of the device bufferChris Robinson2012-11-041-5/+8
| | | | This effectively inverts the DevChannels array
* Make a decimal value a float typeChris Robinson2012-10-311-1/+1
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* Add a couple comments to the codeChris Robinson2012-10-261-0/+2
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* Avoid branching when clamping and converting float samples to integerChris Robinson2012-10-261-2/+2
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* Move some math functions to where they're usedChris Robinson2012-10-251-0/+25
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