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* Keep track of the mix countChris Robinson2014-03-192-0/+10
| | | | | | | | | | | | | | | | | | | | | | | | 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 Robinson2014-03-196-50/+52
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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 Robinson2014-03-197-127/+139
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* Use a separate struct for tracking active sourcesChris Robinson2014-03-186-34/+65
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* Add another directory to .gitignoreChris Robinson2014-03-171-0/+1
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* Remove some unneeded code and unnecessary macros in the OpenSL backendChris Robinson2014-03-171-73/+20
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* Store the old-style backend funcs in the wrapperChris Robinson2014-03-174-30/+33
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* Don't define HAVE_DYNLOAD with the IDE parserChris Robinson2014-03-171-1/+1
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* Don't assume the default mmdevapi device is in the collectionChris Robinson2014-03-171-2/+2
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* Avoid GCC's macro arg concat extension with IDE parsingChris Robinson2014-03-171-1/+1
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* Return the original value from CompExchange*Chris Robinson2014-03-093-30/+27
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* Remove the Apple-specific atomic function implementations.Chris Robinson2014-03-091-36/+0
| | | | | | I'm not sure if they're even used, but they were rather ugly and are set to get even uglier since they don't follow normal conventions (missing exchange, and cas not returning the original value).
* Update config file commentsChris Robinson2014-03-091-17/+29
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* Use the correct array sizeChris Robinson2014-03-081-2/+2
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* Improve int-to-float and uint-to-float conversionsChris Robinson2014-03-081-2/+2
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* Only require MSADPCM block alignment to be a multiple of 2Chris Robinson2014-03-061-2/+2
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* Only sign-expand the nibble when neededChris Robinson2014-03-061-4/+3
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* Move the sample conversion routines to a separate fileChris Robinson2014-03-054-1261/+1279
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* Implement a simplistic MSADPCM encoderChris Robinson2014-03-051-19/+47
| | | | It's not particularly good, but it's better than silence.
* Allocate enough temp space for the ADPCM decoders and encodersChris Robinson2014-03-051-4/+4
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* Use specialized methods for converting ALshort to IMA4 and MSADPCMChris Robinson2014-03-051-2/+32
| | | | As before, to avoid unnecessary direct copies
* Use specialized methods for converting IMA4 and MSADPCM to ALshortChris Robinson2014-03-051-8/+39
| | | | | Since the decoder methods already convert to ALshort, there's no need to use a temp buffer that's just going to copy directly to the destination.
* Use maxi to clamp an int to a lower-boundChris Robinson2014-03-051-1/+1
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* Expand the sign bit on the initial MSADPCM delta valueChris Robinson2014-03-051-0/+1
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* Add an extension to support MSADPCM buffer formatsChris Robinson2014-03-045-28/+342
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* Add an extension to alter the block alignment for buffer unpack/pack opsChris Robinson2014-03-044-19/+85
| | | | | | | | | | | | | | | | This is for unpacking (reading, e.g. alBufferData) and packing (writing, e.g. alGetBufferSamplesSOFT) operations. The alignments are specified in sample frames, with 0 meaning the default (65 for IMA4, 1 otherwise). IMA4 alignment must be a multiple of 8, plus 1 (e.g. alignment = n*8 + 1), otherwise an error will occur during (un)packing. Chenging the block alignment does not affect already-loaded sample data, only future unpack/pack operations... so for example, this is perfectly valid: // Load mono IMA4 data with a block alignment of 1024 bytes, or 2041 sample // frames. alBufferi(buffer, AL_UNPACK_BLOCK_ALIGNMENT_SOFT, 2041); alBufferData(buffer, AL_FORMAT_MONO_IMA4, data, data_len, srate); alBufferi(buffer, AL_UNPACK_BLOCK_ALIGNMENT_SOFT, 0);
* Parameterize the block alignmentChris Robinson2014-03-041-111/+152
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* Use alloca for temp space decoding/encoding IMA4 blocksChris Robinson2014-03-033-4/+28
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* Reduce explicit template declarations and ignore IMA4-to-IMA4 conversionsChris Robinson2014-03-031-159/+35
| | | | | | Since we never store IMA4 data in buffers, we should only ever convert from (user input) or to (user output) IMA4. Once we allow user-specified pack/unpack block alignment, this wouldn't be a simple memcpy anyway.
* Store the original frame size alignment in the bufferChris Robinson2014-03-033-12/+29
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* Move PATH_MAX fallback definitions to alMain.hChris Robinson2014-02-275-31/+9
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* Add back the missing PATH_MAX fallbackChris Robinson2014-02-271-0/+10
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* Use OpenDataFile to load soundfonts relative to data directoriesChris Robinson2014-02-272-2/+8
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* Add a note that absolute paths may be used for hrtf_tablesChris Robinson2014-02-271-0/+1
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* Move OpenDataFile to helpers.c so other sources can use itChris Robinson2014-02-273-131/+134
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* Add an explicit cast to make Windows happyChris Robinson2014-02-261-2/+2
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* Don't fallback to relative filename handling if opening as absolute failsChris Robinson2014-02-261-26/+27
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* Expand environment variables for all config option values when loadingChris Robinson2014-02-262-31/+77
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* Support environment variables in the hrtf_tables config valueChris Robinson2014-02-251-4/+34
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* Fix a config option commentChris Robinson2014-02-231-3/+2
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* Attempt to restore the Neon-enhanced ApplyCoeffsStep methodChris Robinson2014-02-231-7/+21
| | | | Unable to test, but it hopefully works.
* Revert "Apply HRTF coefficient stepping separately"Chris Robinson2014-02-234-19/+74
| | | | | | | | | This reverts commit 25b9c3d0c15e959d544f5d0ac7ea507ea5f6d69f. Conflicts: Alc/mixer_neon.c Unfortunately this also undoes the Neon-enhanced ApplyCoeffsStep method.
* Move HRTF macros and function declarations to a separate headerChris Robinson2014-02-236-14/+32
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* Move the default hrtf table to an external fileChris Robinson2014-02-236-884/+28
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* Add a return value to FindHrtfFormatChris Robinson2014-02-233-8/+10
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* Check the hrtf config option earlierChris Robinson2014-02-231-8/+8
| | | | | This is to make sure it tries to find an HRTF-compatible format before reseting the device, just like when using ALC_HRTF_SOFT.
* Avoid checking the hrtf config option twiceChris Robinson2014-02-231-2/+3
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* Search system-dependant data paths for relative hrtf table filenamesChris Robinson2014-02-232-4/+133
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* Avoid using a global static buffer for config loadingChris Robinson2014-02-231-3/+51
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