3 Fixed CoreAudio capture support.
5 Fixed handling per-version EAX properties.
7 Fixed interpolating changes to the Super Stereo width source property.
9 Fixed detection of the update and buffer size from PipeWire.
11 Fixed resuming playback devices with OpenSL.
13 Fixed support for certain OpenAL implementations with the router.
15 Improved reverb environment transitions.
17 Improved performance of convolution reverb.
19 Improved quality and performance of the pitch shifter effect slightly.
21 Improved sub-sample precision for resampled sources.
23 Improved blending spatialized multi-channel sources that use the source
26 Improved mixing 2D ambisonic sources for higher-order 3D ambisonic mixing.
28 Improved quadraphonic and 7.1 surround sound output slightly.
30 Added config options for UHJ encoding/decoding quality. Including Super
33 Added a config option for specifying the speaker distance.
35 Added a compatibility config option for specifying the NFC distance
38 Added a config option for mixing on PipeWire's non-real-time thread.
40 Added support for virtual source nodes with PipeWire capture.
42 Added the ability for the WASAPI backend to use different playback rates.
44 Added support for SOFA files that define per-response delays in makemhr.
46 Changed the default fallback playback sample rate to 48khz. This doesn't
47 affect most backends, which can detect a default rate from the system.
49 Changed the default resampler to cubic.
51 Changed the default HRTF size from 32 to 64 points.
55 Fixed PipeWire version check.
57 Fixed building with PipeWire versions before 0.3.33.
61 Fixed CoreAudio capture.
63 Fixed air absorption strength.
65 Fixed handling 5.1 devices on Windows that use Rear channels instead of
68 Fixed some compilation issues on MinGW.
70 Fixed ALSA not being used on some systems without PipeWire and PulseAudio.
72 Fixed OpenSL capturing noise.
74 Fixed Oboe capture failing with some buffer sizes.
76 Added checks for the runtime PipeWire version. The same or newer version
77 than is used for building will be needed at runtime for the backend to
80 Separated 3D7.1 into its own speaker configuration.
84 Implemented the ALC_SOFT_reopen_device extension. This allows for moving
85 devices to different outputs without losing object state.
87 Implemented the ALC_SOFT_output_mode extension.
89 Implemented the AL_SOFT_callback_buffer extension.
91 Implemented the AL_SOFT_UHJ extension. This supports native UHJ buffer
92 formats and Super Stereo processing.
94 Implemented the legacy EAX extensions. Enabled by default only on Windows.
96 Improved sound positioning stability when a source is near the listener.
98 Improved the default 5.1 output decoder.
100 Improved the high frequency response for the HRTF second-order ambisonic
103 Improved SoundIO capture behavior.
105 Fixed UHJ output on NEON-capable CPUs.
107 Fixed redundant effect updates when setting an effect property to the
110 Fixed WASAPI capture using really low sample rates, and sources with very
111 high pitch shifts when using a bsinc resampler.
113 Added a PipeWire backend.
115 Added enumeration for the JACK and CoreAudio backends.
117 Added optional support for RTKit to get real-time priority. Only used as a
118 backup when pthread_setschedparam fails.
120 Added an option for JACK playback to render directly in the real-time
121 processing callback. For lower playback latency, on by default.
123 Added an option for custom JACK devices.
125 Added utilities to encode and decode UHJ audio files. Files are decoded to
126 the .amb format, and are encoded from libsndfile-compatible formats.
128 Added an in-progress extension to hold sources in a playing state when a
129 device disconnects. Allows devices to be reset or reopened and have sources
130 resume from where they left off.
132 Lowered the priority of the JACK backend. To avoid it getting picked when
133 PipeWire is providing JACK compatibility, since the JACK backend is less
134 robust with auto-configuration.
138 Improved alext.h's detection of standard types.
140 Improved slightly the local source position when the listener and source
143 Improved click/pop prevention for sounds that stop prematurely.
145 Fixed compilation for Windows ARM targets with MSVC.
147 Fixed ARM NEON detection on Windows.
149 Fixed CoreAudio capture when the requested sample rate doesn't match the
150 system configuration.
152 Fixed OpenSL capture desyncing from the internal capture buffer.
154 Fixed sources missing a batch update when applied after quickly restarting
157 Fixed missing source stop events when stopping a paused source.
159 Added capture support to the experimental Oboe backend.
163 Updated library codebase to C++14.
165 Implemented the AL_SOFT_effect_target extension.
167 Implemented the AL_SOFT_events extension.
169 Implemented the ALC_SOFT_loopback_bformat extension.
171 Improved memory use for mixing voices.
173 Improved detection of NEON capabilities.
175 Improved handling of PulseAudio devices that lack manual start control.
177 Improved mixing performance with PulseAudio.
179 Improved high-frequency scaling quality for the HRTF B-Format decoder.
181 Improved makemhr's HRIR delay calculation.
183 Improved WASAPI capture of mono formats with multichannel input.
185 Reimplemented the modulation stage for reverb.
187 Enabled real-time mixing priority by default, for backends that use the
188 setting. It can still be disabled in the config file.
190 Enabled dual-band processing for the built-in quad and 7.1 output decoders.
192 Fixed a potential crash when deleting an effect slot immediately after the
193 last source using it stops.
195 Fixed building with the static runtime on MSVC.
197 Fixed using source stereo angles outside of -pi...+pi.
199 Fixed the buffer processed event count for sources that start with empty
202 Fixed trying to open an unopenable WASAPI device causing all devices to
205 Fixed stale devices when re-enumerating WASAPI devices.
207 Fixed using unicode paths with the log file on Windows.
209 Fixed DirectSound capture reporting bad sample counts or erroring when
212 Added an in-progress extension for a callback-driven buffer type.
214 Added an in-progress extension for higher-order B-Format buffers.
216 Added an in-progress extension for convolution reverb.
218 Added an experimental Oboe backend for Android playback. This requires the
219 Oboe sources at build time, so that it's built as a static library included
222 Added an option for auto-connecting JACK ports.
224 Added greater-than-stereo support to the SoundIO backend.
226 Modified the mixer to be fully asynchronous with the external API, and
227 should now be real-time safe. Although alcRenderSamplesSOFT is not due to
228 locking to check the device handle validity.
230 Modified the UHJ encoder to use an all-pass FIR filter that's less harmful
231 to non-filtered signal phase.
233 Converted examples from SDL_sound to libsndfile. To avoid issues when
234 combining SDL2 and SDL_sound.
236 Worked around a 32-bit GCC/MinGW bug with TLS destructors. See:
237 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83562
239 Reduced the maximum number of source sends from 16 to 6.
241 Removed the QSA backend. It's been broken for who knows how long.
243 Got rid of the compile-time native-tools targets, using cmake and global
244 initialization instead. This should make cross-compiling less troublesome.
248 Implemented the AL_SOFT_direct_channels_remix extension. This extends
249 AL_DIRECT_CHANNELS_SOFT to optionally remix input channels that don't have
250 a matching output channel.
252 Implemented the AL_SOFT_bformat_ex extension. This extends B-Format buffer
253 support for N3D or SN3D scaling, or ACN channel ordering.
255 Fixed a potential voice leak when a source is started and stopped or
256 restarted in quick succession.
258 Fixed a potential device reset failure with JACK.
260 Improved handling of unsupported channel configurations with WASAPI. Such
261 setups will now try to output at least a stereo mix.
263 Improved clarity a bit for the HRTF second-order ambisonic decoder.
265 Improved detection of compatible layouts for SOFA files in makemhr and
268 Added the ability to resample HRTFs on load. MHR files no longer need to
269 match the device sample rate to be usable.
271 Added an option to limit the HRTF's filter length.
275 Converted the library codebase to C++11. A lot of hacks and custom
276 structures have been replaced with standard or cleaner implementations.
278 Partially implemented the Vocal Morpher effect.
280 Fixed the bsinc SSE resamplers on non-GCC compilers.
282 Fixed OpenSL capture.
284 Fixed support for extended capture formats with OpenSL.
286 Fixed handling of WASAPI not reporting a default device.
288 Fixed performance problems relating to semaphores on macOS.
290 Modified the bsinc12 resampler's transition band to better avoid aliasing
293 Modified alcResetDeviceSOFT to attempt recovery of disconnected devices.
295 Modified the virtual speaker layout for HRTF B-Format decoding.
297 Modified the PulseAudio backend to use a custom processing loop.
299 Renamed the makehrtf utility to makemhr.
301 Improved the efficiency of the bsinc resamplers when up-sampling.
303 Improved the quality of the bsinc resamplers slightly.
305 Improved the efficiency of the HRTF filters.
307 Improved the HRTF B-Format decoder coefficient generation.
309 Improved reverb feedback fading to be more consistent with pan fading.
311 Improved handling of sources that end prematurely, avoiding loud clicks.
313 Improved the performance of some reverb processing loops.
315 Added fast_bsinc12 and 24 resamplers that improve efficiency at the cost of
316 some quality. Notably, down-sampling has less smooth pitch ramping.
318 Added support for SOFA input files with makemhr.
320 Added a build option to use pre-built native tools. For cross-compiling,
321 use with caution and ensure the native tools' binaries are kept up-to-date.
323 Added an adjust-latency config option for the PulseAudio backend.
325 Added basic support for multi-field HRTFs.
327 Added an option for mixing first- or second-order B-Format with HRTF
328 output. This can improve HRTF performance given a number of sources.
330 Added an RC file for proper DLL version information.
332 Disabled some old KDE workarounds by default. Specifically, PulseAudio
333 streams can now be moved (KDE may try to move them after opening).
337 Implemented capture support for the SoundIO backend.
339 Fixed source buffer queues potentially not playing properly when a queue
342 Fixed possible unexpected failures when generating auxiliary effect slots.
344 Fixed a crash with certain reverb or device settings.
346 Fixed OpenSL capture.
348 Improved output limiter response, better ensuring the sample amplitude is
353 Implemented the ALC_SOFT_device_clock extension.
355 Implemented the Pitch Shifter, Frequency Shifter, and Autowah effects.
357 Fixed compiling on FreeBSD systems that use freebsd-lib 9.1.
359 Fixed compiling on NetBSD.
361 Fixed the reverb effect's density scale and panning parameters.
363 Fixed use of the WASAPI backend with certain games, which caused odd COM
364 initialization errors.
366 Increased the number of virtual channels for decoding Ambisonics to HRTF
369 Changed 32-bit x86 builds to use SSE2 math by default for performance.
370 Build-time options are available to use just SSE1 or x87 instead.
372 Replaced the 4-point Sinc resampler with a more efficient cubic resampler.
374 Renamed the MMDevAPI backend to WASAPI.
376 Added support for 24-bit, dual-ear HRTF data sets. The built-in data set
377 has been updated to 24-bit.
379 Added a 24- to 48-point band-limited Sinc resampler.
381 Added an SDL2 playback backend. Disabled by default to avoid a dependency
384 Improved the performance and quality of the Chorus and Flanger effects.
386 Improved the efficiency of the band-limited Sinc resampler.
388 Improved the Sinc resampler's transition band to avoid over-attenuating
391 Improved the performance of some filter operations.
393 Improved the efficiency of object ID lookups.
395 Improved the efficienty of internal voice/source synchronization.
397 Improved AL call error logging with contextualized messages.
399 Removed the reverb effect's modulation stage. Due to the lack of reference
400 for its intended behavior and strength.
404 Fixed resetting the FPU rounding mode after certain function calls on
407 Fixed use of SSE intrinsics when building with Clang on Windows.
409 Fixed a crash with the JACK backend when using JACK1.
411 Fixed use of pthread_setnane_np on NetBSD.
413 Fixed building on FreeBSD with an older freebsd-lib.
415 OSS now links with libossaudio if found at build time (for NetBSD).
419 Fixed an issue where resuming a source might not restart playing it.
421 Fixed PulseAudio playback when the configured stream length is much less
422 than the requested length.
424 Fixed MMDevAPI capture with sample rates not matching the backing device.
426 Fixed int32 output for the Wave Writer.
428 Fixed enumeration of OSS devices that are missing device files.
430 Added correct retrieval of the executable's path on FreeBSD.
432 Added a config option to specify the dithering depth.
434 Added a 5.1 decoder preset that excludes front-center output.
438 Implemented the AL_EXT_STEREO_ANGLES and AL_EXT_SOURCE_RADIUS extensions.
440 Implemented the AL_SOFT_gain_clamp_ex, AL_SOFT_source_resampler,
441 AL_SOFT_source_spatialize, and ALC_SOFT_output_limiter extensions.
443 Implemented 3D processing for some effects. Currently implemented for
444 Reverb, Compressor, Equalizer, and Ring Modulator.
446 Implemented 2-channel UHJ output encoding. This needs to be enabled with a
447 config option to be used.
449 Implemented dual-band processing for high-quality ambisonic decoding.
451 Implemented distance-compensation for surround sound output.
453 Implemented near-field emulation and compensation with ambisonic rendering.
454 Currently only applies when using the high-quality ambisonic decoder or
455 ambisonic output, with appropriate config options.
457 Implemented an output limiter to reduce the amount of distortion from
460 Implemented dithering for 8-bit and 16-bit output.
462 Implemented a config option to select a preferred HRTF.
464 Implemented a run-time check for NEON extensions using /proc/cpuinfo.
466 Implemented experimental capture support for the OpenSL backend.
468 Fixed building on compilers with NEON support but don't default to having
471 Fixed support for JACK on Windows.
473 Fixed starting a source while alcSuspendContext is in effect.
475 Fixed detection of headsets as headphones, with MMDevAPI.
477 Added support for AmbDec config files, for custom ambisonic decoder
478 configurations. Version 3 files only.
480 Added backend-specific options to alsoft-config.
482 Added first-, second-, and third-order ambisonic output formats. Currently
483 only works with backends that don't rely on channel labels, like JACK,
486 Added a build option to embed the default HRTFs into the lib.
488 Added AmbDec presets to enable high-quality ambisonic decoding.
490 Added an AmbDec preset for 3D7.1 speaker setups.
492 Added documentation regarding Ambisonics, 3D7.1, AmbDec config files, and
493 the provided ambdec presets.
495 Added the ability for MMDevAPI to open devices given a Device ID or GUID
498 Added an option to the example apps to open a specific device.
500 Increased the maximum auxiliary send limit to 16 (up from 4). Requires
501 requesting them with the ALC_MAX_AUXILIARY_SENDS context creation
504 Increased the default auxiliary effect slot count to 64 (up from 4).
506 Reduced the default period count to 3 (down from 4).
508 Slightly improved automatic naming for enumerated HRTFs.
510 Improved B-Format decoding with HRTF output.
512 Improved internal property handling for better batching behavior.
514 Improved performance of certain filter uses.
516 Removed support for the AL_SOFT_buffer_samples and AL_SOFT_buffer_sub_data
517 extensions. Due to conflicts with AL_EXT_SOURCE_RADIUS.
521 Implemented device enumeration for OSSv4.
523 Fixed building on OSX.
525 Fixed building on non-Windows systems without POSIX-2008.
527 Fixed Dedicated Dialog and Dedicated LFE effect output.
529 Added a build option to override the share install dir.
531 Added a build option to static-link libgcc for MinGW.
535 Fixed building with JACK and without PulseAudio.
537 Fixed building on FreeBSD.
539 Fixed the ALSA backend's allow-resampler option.
541 Fixed handling of inexact ALSA period counts.
543 Altered device naming scheme on Windows backends to better match other
546 Updated the CoreAudio backend to use the AudioComponent API. This clears up
547 deprecation warnings for OSX 10.11, although requires OSX 10.6 or newer.
551 Implemented a JACK playback backend.
553 Implemented the AL_EXT_BFORMAT and AL_EXT_MULAW_BFORMAT extensions.
555 Implemented the ALC_SOFT_HRTF extension.
557 Implemented C, SSE3, and SSE4.1 based 4- and 8-point Sinc resamplers.
559 Implemented a C and SSE based band-limited Sinc resampler. This does 12- to
560 24-point Sinc resampling, and performs anti-aliasing.
562 Implemented B-Format output support for the wave file writer. This creates
563 FuMa-style first-order Ambisonics wave files (AMB format).
565 Implemented a stereo-mode config option for treating stereo modes as either
566 speakers or headphones.
568 Implemented per-device configuration options.
570 Fixed handling of PulseAudio and MMDevAPI devices that have identical
573 Fixed a potential lockup when stopping playback of suspended PulseAudio devices.
575 Fixed logging of Unicode characters on Windows.
577 Fixed 5.1 surround sound channels. By default it will now use the side
578 channels for the surround output. A configuration using rear channels is
581 Fixed the QSA backend potentially altering the capture format.
583 Fixed detecting MMDevAPI's default device.
585 Fixed returning the default capture device name.
587 Fixed mixing property calculations when deferring context updates.
589 Altered the behavior of alcSuspendContext and alcProcessContext to better
590 match certain Windows drivers.
592 Altered the panning algorithm, utilizing Ambisonics for better side and
593 back positioning cues with surround sound output.
595 Improved support for certain older Windows apps.
597 Improved the alffplay example to support surround sound streams.
599 Improved support for building as a sub-project.
601 Added an HRTF playback example.
603 Added a tone generator output test.
605 Added a toolchain to help with cross-compiling to Android.
609 Implemented EFX Chorus, Flanger, Distortion, Equalizer, and Compressor
612 Implemented high-pass and band-pass EFX filters.
614 Implemented the high-pass filter for the EAXReverb effect.
616 Implemented SSE2 and SSE4.1 linear resamplers.
618 Implemented Neon-enhanced non-HRTF mixers.
620 Implemented a QSA backend, for QNX.
622 Implemented the ALC_SOFT_pause_device, AL_SOFT_deferred_updates,
623 AL_SOFT_block_alignment, AL_SOFT_MSADPCM, and AL_SOFT_source_length
626 Fixed resetting mmdevapi backend devices.
628 Fixed clamping when converting 32-bit float samples to integer.
630 Fixed modulation range in the Modulator effect.
632 Several fixes for the OpenSL playback backend.
634 Fixed device specifier names that have Unicode characters on Windows.
636 Added support for filenames and paths with Unicode (UTF-8) characters on
639 Added support for alsoft.conf config files found in XDG Base Directory
640 Specification locations (XDG_CONFIG_DIRS and XDG_CONFIG_HOME, or their
641 defaults) on non-Windows systems.
643 Added a GUI configuration utility (requires Qt 4.8).
645 Added support for environment variable expansion in config options (not
646 keys or section names).
648 Added an example that uses SDL2 and ffmpeg.
650 Modified examples to use SDL_sound.
652 Modified CMake config option names for better sorting.
654 HRTF data sets specified in the hrtf_tables config option may now be
655 relative or absolute filenames.
657 Made the default HRTF data set an external file, and added a data set for
658 48khz playback in addition to 44.1khz.
660 Added support for C11 atomic methods.
662 Improved support for some non-GNU build systems.
666 Fixed a regression with retrieving the source's AL_GAIN property.
670 Fixed device enumeration with the OSS backend.
672 Reorganized internal mixing logic, so unneeded steps can potentially be
673 skipped for better performance.
675 Removed the lookup table for calculating the mixing pans. The panning is
676 now calculated directly for better precision.
678 Improved the panning of stereo source channels when using stereo output.
680 Improved source filter quality on send paths.
682 Added a config option to allow PulseAudio to move streams between devices.
684 The PulseAudio backend will now attempt to spawn a server by default.
686 Added a workaround for a DirectSound bug relating to float32 output.
688 Added SSE-based mixers, for HRTF and non-HRTF mixing.
690 Added support for the new AL_SOFT_source_latency extension.
692 Improved ALSA capture by avoiding an extra buffer when using sizes
693 supported by the underlying device.
695 Improved the makehrtf utility to support new options and input formats.
697 Modified the CFLAGS declared in the pkg-config file so the "AL/" portion of
698 the header includes can optionally be omitted.
700 Added a couple example code programs to show how to apply reverb, and
703 The configuration sample is now installed into the share/openal/ directory
704 instead of /etc/openal.
706 The configuration sample now gets installed by default.