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* Remove unused reverb modulation codeChris Robinson2018-02-101-107/+2
| | | | | | Still unsure how to handle reverb modulation without some kind of reference output, so remove the related functions to not waste CPU time. It'll remain in the Git history should it ever need to be resurrected.
* Use a function pointer for applying the dry mix post-processChris Robinson2018-02-102-68/+99
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* Use an alternate virtual layout for Ambisonic HRTF decodingChris Robinson2018-02-103-48/+76
| | | | | This uses 16 channels, an 8-channel octagon + 8-channel cube, which should improve horizontal resolution without affecting vertical too much.
* Clarify some macro names using ambisonic mixed-mode notationChris Robinson2018-02-093-32/+32
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* Attempt to improve the reverb panning vectorsChris Robinson2018-02-081-20/+42
| | | | | This should now retain the original orientation of the soundfield and merely focus on the panning vector direction, as intended.
* Alter tha curve of the density-related delay scaleChris Robinson2018-02-081-22/+33
| | | | | | | | | | | | | | | | | | | The delay scale is roughly linear with respect to room size, however the density is not linear with room size. The density is calculated by taking the room size cubed, then normalized by some factor. Unnormalizing the density and taking the cube root restores the original room size to use as a delay scale. The patch also alters the delay and all-pass line lengths to be based on a 1 meter room size, so the the room size recovered from the density acts as a direct multiple for the desired target length. Note that the room scale range is unchanged (5m to 50m), so the minimum and maximum delays are the same. It should also be noted that 50m may not be the correct room size for a density value of 1. A density value of 1 corresponds to an environment size of roughly 2.52m when converted from EAX (DENSITY_SCALE should be 16 rather than 125000), but sizes that low result in undesirable resonance in the feedback, indicating other changes are necessary for that to work.
* Revert "Don't fade the all-pass delay changes"Chris Robinson2018-02-041-28/+48
| | | | This reverts commit 799dfb732b4f49198d72649e86955ea82f45f229.
* Make the Connected state atomicChris Robinson2018-02-0414-77/+80
| | | | Also don't send the Disconnected event more than once.
* Avoid potentially writing partial samplesChris Robinson2018-02-031-1/+3
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* Provide more descriptive messages to disconnection eventsChris Robinson2018-02-0313-61/+86
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* Add a disconnected event typeChris Robinson2018-02-032-0/+18
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* Add missing header for UINT_MAXChris Robinson2018-02-021-0/+1
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* Remove the unused thunk codeChris Robinson2018-02-021-4/+0
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* Don't generate Buffer Completed events for static sourcesChris Robinson2018-02-011-9/+34
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* Use an atomic instead of volatile to tell a thread to quitChris Robinson2018-02-011-6/+5
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* Use semaphores to signal for more samples with JACK and OpenSLChris Robinson2018-02-012-54/+16
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* Use a semaphore to signal the event handlerChris Robinson2018-02-012-3/+4
| | | | | | | | | | | Semaphores allow for semi-persistent signals, compared to a condition variable which requires a mutex for proper detection. A semaphore can be 'post'ed after writing some data on one thread, and another thread will be able to recognize it quickly even if the post occured in between checking for data and waiting. This more correctly fixes a race condition with events since the mixer shouldn't be using mutexes, and arbitrary wake-ups just to make sure an event wasn't missed was quite inefficient.
* Send buffer completed events when enabledChris Robinson2018-02-012-11/+38
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* Add a thread to marshal events from the mixerChris Robinson2018-01-311-1/+19
| | | | | | To avoid having unknown user code running in the mixer thread that could significantly delay the mixed output, a lockless ringbuffer is used for the mixer to provide events that a secondary thread will pop off and process.
* Rename EventLock to make it more clear it's protecting the callbackChris Robinson2018-01-301-2/+2
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* Don't bother with an explicit stop backend methodChris Robinson2018-01-2918-348/+209
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* Call the backend close method in the destructorChris Robinson2018-01-2813-79/+125
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* Combine common initialization code into a functionChris Robinson2018-01-281-143/+105
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* Make EnabledEvts atomicChris Robinson2018-01-281-1/+1
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* Use a fixed array for the effect state factory listChris Robinson2018-01-281-4/+0
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* Store filters in an array of listsChris Robinson2018-01-271-10/+12
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* Store effects in an array of listsChris Robinson2018-01-271-10/+12
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* Use a vector to store the effect slot pointersChris Robinson2018-01-271-12/+13
| | | | And make the ID a simple index into it (1-base, to avoid ID 0).
* Use an array lookup for source IDsChris Robinson2018-01-271-37/+48
| | | | | This is now similar to buffers, being stored in groups of 64 in a vector with the ID providing the array indices.
* Use a different method for storing and looking up buffersChris Robinson2018-01-271-10/+12
| | | | | | | | | | | | | | | | | Rather than each buffer being individually allocated with a generated 'thunk' ID that's used with a uint:ptr map, buffers are allocated in arrays of 64 within a vector. Each group of 64 has an associated 64-bit mask indicating which are free to use, and the buffer ID is comprised of the two array indices which directly locate the buffer (no searching, binary or otherwise). Currently no buffers are actually deallocated after being allocated, though they are reused. So an app that creates a ton of buffers once, then deletes them all and uses only a couple from then on, will have a bit of waste, while an app that's more consistent with the number of used buffers won't be a problem. This can be improved by removing elements of the containing vector that contain all-free buffers while there are plenty of other free buffers. Also, this method can easily be applied to other resources, like sources.
* Don't rely on alMain.h in alBuffer.hChris Robinson2018-01-261-0/+78
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* Construct error messages using parameterized valuesChris Robinson2018-01-259-170/+176
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* Report AL_SOFTX_events as an in-progress extensionChris Robinson2018-01-241-0/+1
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* Add a deprecated event type for alDopplerVelocityChris Robinson2018-01-241-0/+1
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* Provide messages for the remaining AL errorsChris Robinson2018-01-249-261/+188
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* Handle event propertiesChris Robinson2018-01-231-0/+18
| | | | | This just implements the event methods insofar as tracked state. No events are generated/reported yet.
* Use a new proper buffer function with a flags parameterChris Robinson2018-01-231-0/+4
| | | | | | Rather than hackily combining bit flags with the format, to increase the number of potential flags. alBufferData now behaves as if calling alBufferStorageSOFT with a flags value of 0.
* More cleanup for buffer loadingChris Robinson2018-01-211-4/+0
| | | | | Don't bother with unnecessary and unused converters, and remove some unsupported queries.
* Handle double-precision buffers in the mixerChris Robinson2018-01-211-0/+5
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* Remove the old buffer_samples functionsChris Robinson2018-01-211-45/+0
| | | | | | | The symbols are still there and exported to retain ABI compatibility, but they no longer do anything except set an AL_INVALID_OPERATION error. They're also removed from the function and enum tables, since they're not part of any supported extension.
* Expose a preliminary AL_SOFT_map_buffer extension for testingChris Robinson2018-01-201-8/+33
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* Store 8-bit sample types directly as unsigned byteChris Robinson2018-01-191-4/+4
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* Remove unnecessary private AL_SOFT_buffer_samples2 definitionsChris Robinson2018-01-191-9/+0
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* Store mulaw and alaw samples directly in the bufferChris Robinson2018-01-171-9/+18
| | | | | | | They're now decompressed on the fly in the mixer. This is not a significant performance issue given that it only needs a 512-byte lookup table, and the buffer stores half as much data (it may actually be faster, requiring less overall memory).
* Use a voice flag to indicate it being staticChris Robinson2018-01-162-3/+3
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* Avoid using alloca in the CoreAudio backendChris Robinson2018-01-161-12/+10
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* Use a global RowMixerFuncChris Robinson2018-01-163-30/+9
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* Properly cast some parameters for MSVCChris Robinson2018-01-161-5/+5
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* Add min/max/clamp functions for size_tChris Robinson2018-01-161-0/+4
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* Do more samples at once with the distortion effectChris Robinson2018-01-161-25/+21
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