3 Fixed CoreAudio capture.
5 Fixed air absorption strength.
7 Fixed some compilation issues on MinGW.
9 Added checks for the runtime PipeWire version. The same or newer version
10 than is used for building will be needed at runtime for the backend to
13 Separated 3D7.1 into its own speaker configuration.
17 Implemented the ALC_SOFT_reopen_device extension. This allows for moving
18 devices to different outputs without losing object state.
20 Implemented the ALC_SOFT_output_mode extension.
22 Implemented the AL_SOFT_callback_buffer extension.
24 Implemented the AL_SOFT_UHJ extension. This supports native UHJ buffer
25 formats and Super Stereo processing.
27 Implemented the legacy EAX extensions. Enabled by default only on Windows.
29 Improved sound positioning stability when a source is near the listener.
31 Improved the default 5.1 output decoder.
33 Improved the high frequency response for the HRTF second-order ambisonic
36 Improved SoundIO capture behavior.
38 Fixed UHJ output on NEON-capable CPUs.
40 Fixed redundant effect updates when setting an effect property to the
43 Fixed WASAPI capture using really low sample rates, and sources with very
44 high pitch shifts when using a bsinc resampler.
46 Added a PipeWire backend.
48 Added enumeration for the JACK and CoreAudio backends.
50 Added optional support for RTKit to get real-time priority. Only used as a
51 backup when pthread_setschedparam fails.
53 Added an option for JACK playback to render directly in the real-time
54 processing callback. For lower playback latency, on by default.
56 Added an option for custom JACK devices.
58 Added utilities to encode and decode UHJ audio files. Files are decoded to
59 the .amb format, and are encoded from libsndfile-compatible formats.
61 Added an in-progress extension to hold sources in a playing state when a
62 device disconnects. Allows devices to be reset or reopened and have sources
63 resume from where they left off.
65 Lowered the priority of the JACK backend. To avoid it getting picked when
66 PipeWire is providing JACK compatibility, since the JACK backend is less
67 robust with auto-configuration.
71 Improved alext.h's detection of standard types.
73 Improved slightly the local source position when the listener and source
76 Improved click/pop prevention for sounds that stop prematurely.
78 Fixed compilation for Windows ARM targets with MSVC.
80 Fixed ARM NEON detection on Windows.
82 Fixed CoreAudio capture when the requested sample rate doesn't match the
85 Fixed OpenSL capture desyncing from the internal capture buffer.
87 Fixed sources missing a batch update when applied after quickly restarting
90 Fixed missing source stop events when stopping a paused source.
92 Added capture support to the experimental Oboe backend.
96 Updated library codebase to C++14.
98 Implemented the AL_SOFT_effect_target extension.
100 Implemented the AL_SOFT_events extension.
102 Implemented the ALC_SOFT_loopback_bformat extension.
104 Improved memory use for mixing voices.
106 Improved detection of NEON capabilities.
108 Improved handling of PulseAudio devices that lack manual start control.
110 Improved mixing performance with PulseAudio.
112 Improved high-frequency scaling quality for the HRTF B-Format decoder.
114 Improved makemhr's HRIR delay calculation.
116 Improved WASAPI capture of mono formats with multichannel input.
118 Reimplemented the modulation stage for reverb.
120 Enabled real-time mixing priority by default, for backends that use the
121 setting. It can still be disabled in the config file.
123 Enabled dual-band processing for the built-in quad and 7.1 output decoders.
125 Fixed a potential crash when deleting an effect slot immediately after the
126 last source using it stops.
128 Fixed building with the static runtime on MSVC.
130 Fixed using source stereo angles outside of -pi...+pi.
132 Fixed the buffer processed event count for sources that start with empty
135 Fixed trying to open an unopenable WASAPI device causing all devices to
138 Fixed stale devices when re-enumerating WASAPI devices.
140 Fixed using unicode paths with the log file on Windows.
142 Fixed DirectSound capture reporting bad sample counts or erroring when
145 Added an in-progress extension for a callback-driven buffer type.
147 Added an in-progress extension for higher-order B-Format buffers.
149 Added an in-progress extension for convolution reverb.
151 Added an experimental Oboe backend for Android playback. This requires the
152 Oboe sources at build time, so that it's built as a static library included
155 Added an option for auto-connecting JACK ports.
157 Added greater-than-stereo support to the SoundIO backend.
159 Modified the mixer to be fully asynchronous with the external API, and
160 should now be real-time safe. Although alcRenderSamplesSOFT is not due to
161 locking to check the device handle validity.
163 Modified the UHJ encoder to use an all-pass FIR filter that's less harmful
164 to non-filtered signal phase.
166 Converted examples from SDL_sound to libsndfile. To avoid issues when
167 combining SDL2 and SDL_sound.
169 Worked around a 32-bit GCC/MinGW bug with TLS destructors. See:
170 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83562
172 Reduced the maximum number of source sends from 16 to 6.
174 Removed the QSA backend. It's been broken for who knows how long.
176 Got rid of the compile-time native-tools targets, using cmake and global
177 initialization instead. This should make cross-compiling less troublesome.
181 Implemented the AL_SOFT_direct_channels_remix extension. This extends
182 AL_DIRECT_CHANNELS_SOFT to optionally remix input channels that don't have
183 a matching output channel.
185 Implemented the AL_SOFT_bformat_ex extension. This extends B-Format buffer
186 support for N3D or SN3D scaling, or ACN channel ordering.
188 Fixed a potential voice leak when a source is started and stopped or
189 restarted in quick succession.
191 Fixed a potential device reset failure with JACK.
193 Improved handling of unsupported channel configurations with WASAPI. Such
194 setups will now try to output at least a stereo mix.
196 Improved clarity a bit for the HRTF second-order ambisonic decoder.
198 Improved detection of compatible layouts for SOFA files in makemhr and
201 Added the ability to resample HRTFs on load. MHR files no longer need to
202 match the device sample rate to be usable.
204 Added an option to limit the HRTF's filter length.
208 Converted the library codebase to C++11. A lot of hacks and custom
209 structures have been replaced with standard or cleaner implementations.
211 Partially implemented the Vocal Morpher effect.
213 Fixed the bsinc SSE resamplers on non-GCC compilers.
215 Fixed OpenSL capture.
217 Fixed support for extended capture formats with OpenSL.
219 Fixed handling of WASAPI not reporting a default device.
221 Fixed performance problems relating to semaphores on macOS.
223 Modified the bsinc12 resampler's transition band to better avoid aliasing
226 Modified alcResetDeviceSOFT to attempt recovery of disconnected devices.
228 Modified the virtual speaker layout for HRTF B-Format decoding.
230 Modified the PulseAudio backend to use a custom processing loop.
232 Renamed the makehrtf utility to makemhr.
234 Improved the efficiency of the bsinc resamplers when up-sampling.
236 Improved the quality of the bsinc resamplers slightly.
238 Improved the efficiency of the HRTF filters.
240 Improved the HRTF B-Format decoder coefficient generation.
242 Improved reverb feedback fading to be more consistent with pan fading.
244 Improved handling of sources that end prematurely, avoiding loud clicks.
246 Improved the performance of some reverb processing loops.
248 Added fast_bsinc12 and 24 resamplers that improve efficiency at the cost of
249 some quality. Notably, down-sampling has less smooth pitch ramping.
251 Added support for SOFA input files with makemhr.
253 Added a build option to use pre-built native tools. For cross-compiling,
254 use with caution and ensure the native tools' binaries are kept up-to-date.
256 Added an adjust-latency config option for the PulseAudio backend.
258 Added basic support for multi-field HRTFs.
260 Added an option for mixing first- or second-order B-Format with HRTF
261 output. This can improve HRTF performance given a number of sources.
263 Added an RC file for proper DLL version information.
265 Disabled some old KDE workarounds by default. Specifically, PulseAudio
266 streams can now be moved (KDE may try to move them after opening).
270 Implemented capture support for the SoundIO backend.
272 Fixed source buffer queues potentially not playing properly when a queue
275 Fixed possible unexpected failures when generating auxiliary effect slots.
277 Fixed a crash with certain reverb or device settings.
279 Fixed OpenSL capture.
281 Improved output limiter response, better ensuring the sample amplitude is
286 Implemented the ALC_SOFT_device_clock extension.
288 Implemented the Pitch Shifter, Frequency Shifter, and Autowah effects.
290 Fixed compiling on FreeBSD systems that use freebsd-lib 9.1.
292 Fixed compiling on NetBSD.
294 Fixed the reverb effect's density scale and panning parameters.
296 Fixed use of the WASAPI backend with certain games, which caused odd COM
297 initialization errors.
299 Increased the number of virtual channels for decoding Ambisonics to HRTF
302 Changed 32-bit x86 builds to use SSE2 math by default for performance.
303 Build-time options are available to use just SSE1 or x87 instead.
305 Replaced the 4-point Sinc resampler with a more efficient cubic resampler.
307 Renamed the MMDevAPI backend to WASAPI.
309 Added support for 24-bit, dual-ear HRTF data sets. The built-in data set
310 has been updated to 24-bit.
312 Added a 24- to 48-point band-limited Sinc resampler.
314 Added an SDL2 playback backend. Disabled by default to avoid a dependency
317 Improved the performance and quality of the Chorus and Flanger effects.
319 Improved the efficiency of the band-limited Sinc resampler.
321 Improved the Sinc resampler's transition band to avoid over-attenuating
324 Improved the performance of some filter operations.
326 Improved the efficiency of object ID lookups.
328 Improved the efficienty of internal voice/source synchronization.
330 Improved AL call error logging with contextualized messages.
332 Removed the reverb effect's modulation stage. Due to the lack of reference
333 for its intended behavior and strength.
337 Fixed resetting the FPU rounding mode after certain function calls on
340 Fixed use of SSE intrinsics when building with Clang on Windows.
342 Fixed a crash with the JACK backend when using JACK1.
344 Fixed use of pthread_setnane_np on NetBSD.
346 Fixed building on FreeBSD with an older freebsd-lib.
348 OSS now links with libossaudio if found at build time (for NetBSD).
352 Fixed an issue where resuming a source might not restart playing it.
354 Fixed PulseAudio playback when the configured stream length is much less
355 than the requested length.
357 Fixed MMDevAPI capture with sample rates not matching the backing device.
359 Fixed int32 output for the Wave Writer.
361 Fixed enumeration of OSS devices that are missing device files.
363 Added correct retrieval of the executable's path on FreeBSD.
365 Added a config option to specify the dithering depth.
367 Added a 5.1 decoder preset that excludes front-center output.
371 Implemented the AL_EXT_STEREO_ANGLES and AL_EXT_SOURCE_RADIUS extensions.
373 Implemented the AL_SOFT_gain_clamp_ex, AL_SOFT_source_resampler,
374 AL_SOFT_source_spatialize, and ALC_SOFT_output_limiter extensions.
376 Implemented 3D processing for some effects. Currently implemented for
377 Reverb, Compressor, Equalizer, and Ring Modulator.
379 Implemented 2-channel UHJ output encoding. This needs to be enabled with a
380 config option to be used.
382 Implemented dual-band processing for high-quality ambisonic decoding.
384 Implemented distance-compensation for surround sound output.
386 Implemented near-field emulation and compensation with ambisonic rendering.
387 Currently only applies when using the high-quality ambisonic decoder or
388 ambisonic output, with appropriate config options.
390 Implemented an output limiter to reduce the amount of distortion from
393 Implemented dithering for 8-bit and 16-bit output.
395 Implemented a config option to select a preferred HRTF.
397 Implemented a run-time check for NEON extensions using /proc/cpuinfo.
399 Implemented experimental capture support for the OpenSL backend.
401 Fixed building on compilers with NEON support but don't default to having
404 Fixed support for JACK on Windows.
406 Fixed starting a source while alcSuspendContext is in effect.
408 Fixed detection of headsets as headphones, with MMDevAPI.
410 Added support for AmbDec config files, for custom ambisonic decoder
411 configurations. Version 3 files only.
413 Added backend-specific options to alsoft-config.
415 Added first-, second-, and third-order ambisonic output formats. Currently
416 only works with backends that don't rely on channel labels, like JACK,
419 Added a build option to embed the default HRTFs into the lib.
421 Added AmbDec presets to enable high-quality ambisonic decoding.
423 Added an AmbDec preset for 3D7.1 speaker setups.
425 Added documentation regarding Ambisonics, 3D7.1, AmbDec config files, and
426 the provided ambdec presets.
428 Added the ability for MMDevAPI to open devices given a Device ID or GUID
431 Added an option to the example apps to open a specific device.
433 Increased the maximum auxiliary send limit to 16 (up from 4). Requires
434 requesting them with the ALC_MAX_AUXILIARY_SENDS context creation
437 Increased the default auxiliary effect slot count to 64 (up from 4).
439 Reduced the default period count to 3 (down from 4).
441 Slightly improved automatic naming for enumerated HRTFs.
443 Improved B-Format decoding with HRTF output.
445 Improved internal property handling for better batching behavior.
447 Improved performance of certain filter uses.
449 Removed support for the AL_SOFT_buffer_samples and AL_SOFT_buffer_sub_data
450 extensions. Due to conflicts with AL_EXT_SOURCE_RADIUS.
454 Implemented device enumeration for OSSv4.
456 Fixed building on OSX.
458 Fixed building on non-Windows systems without POSIX-2008.
460 Fixed Dedicated Dialog and Dedicated LFE effect output.
462 Added a build option to override the share install dir.
464 Added a build option to static-link libgcc for MinGW.
468 Fixed building with JACK and without PulseAudio.
470 Fixed building on FreeBSD.
472 Fixed the ALSA backend's allow-resampler option.
474 Fixed handling of inexact ALSA period counts.
476 Altered device naming scheme on Windows backends to better match other
479 Updated the CoreAudio backend to use the AudioComponent API. This clears up
480 deprecation warnings for OSX 10.11, although requires OSX 10.6 or newer.
484 Implemented a JACK playback backend.
486 Implemented the AL_EXT_BFORMAT and AL_EXT_MULAW_BFORMAT extensions.
488 Implemented the ALC_SOFT_HRTF extension.
490 Implemented C, SSE3, and SSE4.1 based 4- and 8-point Sinc resamplers.
492 Implemented a C and SSE based band-limited Sinc resampler. This does 12- to
493 24-point Sinc resampling, and performs anti-aliasing.
495 Implemented B-Format output support for the wave file writer. This creates
496 FuMa-style first-order Ambisonics wave files (AMB format).
498 Implemented a stereo-mode config option for treating stereo modes as either
499 speakers or headphones.
501 Implemented per-device configuration options.
503 Fixed handling of PulseAudio and MMDevAPI devices that have identical
506 Fixed a potential lockup when stopping playback of suspended PulseAudio devices.
508 Fixed logging of Unicode characters on Windows.
510 Fixed 5.1 surround sound channels. By default it will now use the side
511 channels for the surround output. A configuration using rear channels is
514 Fixed the QSA backend potentially altering the capture format.
516 Fixed detecting MMDevAPI's default device.
518 Fixed returning the default capture device name.
520 Fixed mixing property calculations when deferring context updates.
522 Altered the behavior of alcSuspendContext and alcProcessContext to better
523 match certain Windows drivers.
525 Altered the panning algorithm, utilizing Ambisonics for better side and
526 back positioning cues with surround sound output.
528 Improved support for certain older Windows apps.
530 Improved the alffplay example to support surround sound streams.
532 Improved support for building as a sub-project.
534 Added an HRTF playback example.
536 Added a tone generator output test.
538 Added a toolchain to help with cross-compiling to Android.
542 Implemented EFX Chorus, Flanger, Distortion, Equalizer, and Compressor
545 Implemented high-pass and band-pass EFX filters.
547 Implemented the high-pass filter for the EAXReverb effect.
549 Implemented SSE2 and SSE4.1 linear resamplers.
551 Implemented Neon-enhanced non-HRTF mixers.
553 Implemented a QSA backend, for QNX.
555 Implemented the ALC_SOFT_pause_device, AL_SOFT_deferred_updates,
556 AL_SOFT_block_alignment, AL_SOFT_MSADPCM, and AL_SOFT_source_length
559 Fixed resetting mmdevapi backend devices.
561 Fixed clamping when converting 32-bit float samples to integer.
563 Fixed modulation range in the Modulator effect.
565 Several fixes for the OpenSL playback backend.
567 Fixed device specifier names that have Unicode characters on Windows.
569 Added support for filenames and paths with Unicode (UTF-8) characters on
572 Added support for alsoft.conf config files found in XDG Base Directory
573 Specification locations (XDG_CONFIG_DIRS and XDG_CONFIG_HOME, or their
574 defaults) on non-Windows systems.
576 Added a GUI configuration utility (requires Qt 4.8).
578 Added support for environment variable expansion in config options (not
579 keys or section names).
581 Added an example that uses SDL2 and ffmpeg.
583 Modified examples to use SDL_sound.
585 Modified CMake config option names for better sorting.
587 HRTF data sets specified in the hrtf_tables config option may now be
588 relative or absolute filenames.
590 Made the default HRTF data set an external file, and added a data set for
591 48khz playback in addition to 44.1khz.
593 Added support for C11 atomic methods.
595 Improved support for some non-GNU build systems.
599 Fixed a regression with retrieving the source's AL_GAIN property.
603 Fixed device enumeration with the OSS backend.
605 Reorganized internal mixing logic, so unneeded steps can potentially be
606 skipped for better performance.
608 Removed the lookup table for calculating the mixing pans. The panning is
609 now calculated directly for better precision.
611 Improved the panning of stereo source channels when using stereo output.
613 Improved source filter quality on send paths.
615 Added a config option to allow PulseAudio to move streams between devices.
617 The PulseAudio backend will now attempt to spawn a server by default.
619 Added a workaround for a DirectSound bug relating to float32 output.
621 Added SSE-based mixers, for HRTF and non-HRTF mixing.
623 Added support for the new AL_SOFT_source_latency extension.
625 Improved ALSA capture by avoiding an extra buffer when using sizes
626 supported by the underlying device.
628 Improved the makehrtf utility to support new options and input formats.
630 Modified the CFLAGS declared in the pkg-config file so the "AL/" portion of
631 the header includes can optionally be omitted.
633 Added a couple example code programs to show how to apply reverb, and
636 The configuration sample is now installed into the share/openal/ directory
637 instead of /etc/openal.
639 The configuration sample now gets installed by default.