3 Updated library codebase to C++14.
5 Implemented the AL_SOFT_effect_target extension.
7 Implemented the ALC_SOFT_loopback_bformat extension.
9 Improved memory use for mixing voices.
11 Improved detection of NEON capabilities.
13 Improved handling of PulseAudio devices that lack manual start control.
15 Improved mixing performance with PulseAudio.
17 Improved high-frequency scaling quality for the HRTF B-Format decoder.
19 Improved makemhr's HRIR delay calculation.
21 Improved WASAPI capture of mono formats with multichannel input.
23 Reimplemented the modulation stage for reverb.
25 Enabled real-time mixing priority by default, for backends that use the
26 setting. It can still be disabled in the config file.
28 Enabled dual-band processing for the built-in quad and 7.1 output decoders.
30 Fixed building with the static runtime on MSVC.
32 Fixed using source stereo angles outside of -pi...+pi.
34 Fixed the buffer processed event count for sources that start with empty
37 Fixed trying to open an unopenable WASAPI device causing all devices to
40 Fixed stale devices when re-enumerating WASAPI devices.
42 Fixed using unicode paths with the log file on Windows.
44 Fixed DirectSound capture reporting the bad sample counts or erroring when
47 Added an in-progress extension for a callback-driven buffer type.
49 Added an in-progress extension for higher-order B-Format buffers.
51 Added an in-progress extension for convolution reverb.
53 Added an experimental Oboe backend for Android playback. This requires the
54 Oboe sources at build time, so that it's built as a static library included
57 Added an option for auto-connecting JACK ports.
59 Added greater-than-stereo support to the SoundIO backend.
61 Modified the mixer to be fully asynchronous with the external API, and
62 should now be real-time safe. Although alcRenderSamplesSOFT is not due to
63 locking to check the device handle validity.
65 Modified the UHJ encoder to use an all-pass FIR filter that's less harmful
66 to non-filtered signal phase.
68 Converted examples from SDL_sound to libsndfile. To avoid issues when
69 combining SDL2 and SDL_sound.
71 Worked around a 32-bit GCC/MinGW bug with TLS destructors. See:
72 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83562
74 Reduced the maximum number of source sends from 16 to 6.
76 Removed the QSA backend. It's been broken for who knows how long.
78 Got rid of the compile-time native-tools targets, using cmake and global
79 initialization instead. This should make cross-compiling less troublesome.
83 Implemented the AL_SOFT_direct_channels_remix extension. This extends
84 AL_DIRECT_CHANNELS_SOFT to optionally remix input channels that don't have
85 a matching output channel.
87 Implemented the AL_SOFT_bformat_ex extension. This extends B-Format buffer
88 support for N3D or SN3D scaling, or ACN channel ordering.
90 Fixed a potential voice leak when a source is started and stopped or
91 restarted in quick succession.
93 Fixed a potential device reset failure with JACK.
95 Improved handling of unsupported channel configurations with WASAPI. Such
96 setups will now try to output at least a stereo mix.
98 Improved clarity a bit for the HRTF second-order ambisonic decoder.
100 Improved detection of compatible layouts for SOFA files in makemhr and
103 Added the ability to resample HRTFs on load. MHR files no longer need to
104 match the device sample rate to be usable.
106 Added an option to limit the HRTF's filter length.
110 Converted the library codebase to C++11. A lot of hacks and custom
111 structures have been replaced with standard or cleaner implementations.
113 Partially implemented the Vocal Morpher effect.
115 Fixed the bsinc SSE resamplers on non-GCC compilers.
117 Fixed OpenSL capture.
119 Fixed support for extended capture formats with OpenSL.
121 Fixed handling of WASAPI not reporting a default device.
123 Fixed performance problems relating to semaphores on macOS.
125 Modified the bsinc12 resampler's transition band to better avoid aliasing
128 Modified alcResetDeviceSOFT to attempt recovery of disconnected devices.
130 Modified the virtual speaker layout for HRTF B-Format decoding.
132 Modified the PulseAudio backend to use a custom processing loop.
134 Renamed the makehrtf utility to makemhr.
136 Improved the efficiency of the bsinc resamplers when up-sampling.
138 Improved the quality of the bsinc resamplers slightly.
140 Improved the efficiency of the HRTF filters.
142 Improved the HRTF B-Format decoder coefficient generation.
144 Improved reverb feedback fading to be more consistent with pan fading.
146 Improved handling of sources that end prematurely, avoiding loud clicks.
148 Improved the performance of some reverb processing loops.
150 Added fast_bsinc12 and 24 resamplers that improve efficiency at the cost of
151 some quality. Notably, down-sampling has less smooth pitch ramping.
153 Added support for SOFA input files with makemhr.
155 Added a build option to use pre-built native tools. For cross-compiling,
156 use with caution and ensure the native tools' binaries are kept up-to-date.
158 Added an adjust-latency config option for the PulseAudio backend.
160 Added basic support for multi-field HRTFs.
162 Added an option for mixing first- or second-order B-Format with HRTF
163 output. This can improve HRTF performance given a number of sources.
165 Added an RC file for proper DLL version information.
167 Disabled some old KDE workarounds by default. Specifically, PulseAudio
168 streams can now be moved (KDE may try to move them after opening).
172 Implemented capture support for the SoundIO backend.
174 Fixed source buffer queues potentially not playing properly when a queue
177 Fixed possible unexpected failures when generating auxiliary effect slots.
179 Fixed a crash with certain reverb or device settings.
181 Fixed OpenSL capture.
183 Improved output limiter response, better ensuring the sample amplitude is
188 Implemented the ALC_SOFT_device_clock extension.
190 Implemented the Pitch Shifter, Frequency Shifter, and Autowah effects.
192 Fixed compiling on FreeBSD systems that use freebsd-lib 9.1.
194 Fixed compiling on NetBSD.
196 Fixed the reverb effect's density scale and panning parameters.
198 Fixed use of the WASAPI backend with certain games, which caused odd COM
199 initialization errors.
201 Increased the number of virtual channels for decoding Ambisonics to HRTF
204 Changed 32-bit x86 builds to use SSE2 math by default for performance.
205 Build-time options are available to use just SSE1 or x87 instead.
207 Replaced the 4-point Sinc resampler with a more efficient cubic resampler.
209 Renamed the MMDevAPI backend to WASAPI.
211 Added support for 24-bit, dual-ear HRTF data sets. The built-in data set
212 has been updated to 24-bit.
214 Added a 24- to 48-point band-limited Sinc resampler.
216 Added an SDL2 playback backend. Disabled by default to avoid a dependency
219 Improved the performance and quality of the Chorus and Flanger effects.
221 Improved the efficiency of the band-limited Sinc resampler.
223 Improved the Sinc resampler's transition band to avoid over-attenuating
226 Improved the performance of some filter operations.
228 Improved the efficiency of object ID lookups.
230 Improved the efficienty of internal voice/source synchronization.
232 Improved AL call error logging with contextualized messages.
234 Removed the reverb effect's modulation stage. Due to the lack of reference
235 for its intended behavior and strength.
239 Fixed resetting the FPU rounding mode after certain function calls on
242 Fixed use of SSE intrinsics when building with Clang on Windows.
244 Fixed a crash with the JACK backend when using JACK1.
246 Fixed use of pthread_setnane_np on NetBSD.
248 Fixed building on FreeBSD with an older freebsd-lib.
250 OSS now links with libossaudio if found at build time (for NetBSD).
254 Fixed an issue where resuming a source might not restart playing it.
256 Fixed PulseAudio playback when the configured stream length is much less
257 than the requested length.
259 Fixed MMDevAPI capture with sample rates not matching the backing device.
261 Fixed int32 output for the Wave Writer.
263 Fixed enumeration of OSS devices that are missing device files.
265 Added correct retrieval of the executable's path on FreeBSD.
267 Added a config option to specify the dithering depth.
269 Added a 5.1 decoder preset that excludes front-center output.
273 Implemented the AL_EXT_STEREO_ANGLES and AL_EXT_SOURCE_RADIUS extensions.
275 Implemented the AL_SOFT_gain_clamp_ex, AL_SOFT_source_resampler,
276 AL_SOFT_source_spatialize, and ALC_SOFT_output_limiter extensions.
278 Implemented 3D processing for some effects. Currently implemented for
279 Reverb, Compressor, Equalizer, and Ring Modulator.
281 Implemented 2-channel UHJ output encoding. This needs to be enabled with a
282 config option to be used.
284 Implemented dual-band processing for high-quality ambisonic decoding.
286 Implemented distance-compensation for surround sound output.
288 Implemented near-field emulation and compensation with ambisonic rendering.
289 Currently only applies when using the high-quality ambisonic decoder or
290 ambisonic output, with appropriate config options.
292 Implemented an output limiter to reduce the amount of distortion from
295 Implemented dithering for 8-bit and 16-bit output.
297 Implemented a config option to select a preferred HRTF.
299 Implemented a run-time check for NEON extensions using /proc/cpuinfo.
301 Implemented experimental capture support for the OpenSL backend.
303 Fixed building on compilers with NEON support but don't default to having
306 Fixed support for JACK on Windows.
308 Fixed starting a source while alcSuspendContext is in effect.
310 Fixed detection of headsets as headphones, with MMDevAPI.
312 Added support for AmbDec config files, for custom ambisonic decoder
313 configurations. Version 3 files only.
315 Added backend-specific options to alsoft-config.
317 Added first-, second-, and third-order ambisonic output formats. Currently
318 only works with backends that don't rely on channel labels, like JACK,
321 Added a build option to embed the default HRTFs into the lib.
323 Added AmbDec presets to enable high-quality ambisonic decoding.
325 Added an AmbDec preset for 3D7.1 speaker setups.
327 Added documentation regarding Ambisonics, 3D7.1, AmbDec config files, and
328 the provided ambdec presets.
330 Added the ability for MMDevAPI to open devices given a Device ID or GUID
333 Added an option to the example apps to open a specific device.
335 Increased the maximum auxiliary send limit to 16 (up from 4). Requires
336 requesting them with the ALC_MAX_AUXILIARY_SENDS context creation
339 Increased the default auxiliary effect slot count to 64 (up from 4).
341 Reduced the default period count to 3 (down from 4).
343 Slightly improved automatic naming for enumerated HRTFs.
345 Improved B-Format decoding with HRTF output.
347 Improved internal property handling for better batching behavior.
349 Improved performance of certain filter uses.
351 Removed support for the AL_SOFT_buffer_samples and AL_SOFT_buffer_sub_data
352 extensions. Due to conflicts with AL_EXT_SOURCE_RADIUS.
356 Implemented device enumeration for OSSv4.
358 Fixed building on OSX.
360 Fixed building on non-Windows systems without POSIX-2008.
362 Fixed Dedicated Dialog and Dedicated LFE effect output.
364 Added a build option to override the share install dir.
366 Added a build option to static-link libgcc for MinGW.
370 Fixed building with JACK and without PulseAudio.
372 Fixed building on FreeBSD.
374 Fixed the ALSA backend's allow-resampler option.
376 Fixed handling of inexact ALSA period counts.
378 Altered device naming scheme on Windows backends to better match other
381 Updated the CoreAudio backend to use the AudioComponent API. This clears up
382 deprecation warnings for OSX 10.11, although requires OSX 10.6 or newer.
386 Implemented a JACK playback backend.
388 Implemented the AL_EXT_BFORMAT and AL_EXT_MULAW_BFORMAT extensions.
390 Implemented the ALC_SOFT_HRTF extension.
392 Implemented C, SSE3, and SSE4.1 based 4- and 8-point Sinc resamplers.
394 Implemented a C and SSE based band-limited Sinc resampler. This does 12- to
395 24-point Sinc resampling, and performs anti-aliasing.
397 Implemented B-Format output support for the wave file writer. This creates
398 FuMa-style first-order Ambisonics wave files (AMB format).
400 Implemented a stereo-mode config option for treating stereo modes as either
401 speakers or headphones.
403 Implemented per-device configuration options.
405 Fixed handling of PulseAudio and MMDevAPI devices that have identical
408 Fixed a potential lockup when stopping playback of suspended PulseAudio devices.
410 Fixed logging of Unicode characters on Windows.
412 Fixed 5.1 surround sound channels. By default it will now use the side
413 channels for the surround output. A configuration using rear channels is
416 Fixed the QSA backend potentially altering the capture format.
418 Fixed detecting MMDevAPI's default device.
420 Fixed returning the default capture device name.
422 Fixed mixing property calculations when deferring context updates.
424 Altered the behavior of alcSuspendContext and alcProcessContext to better
425 match certain Windows drivers.
427 Altered the panning algorithm, utilizing Ambisonics for better side and
428 back positioning cues with surround sound output.
430 Improved support for certain older Windows apps.
432 Improved the alffplay example to support surround sound streams.
434 Improved support for building as a sub-project.
436 Added an HRTF playback example.
438 Added a tone generator output test.
440 Added a toolchain to help with cross-compiling to Android.
444 Implemented EFX Chorus, Flanger, Distortion, Equalizer, and Compressor
447 Implemented high-pass and band-pass EFX filters.
449 Implemented the high-pass filter for the EAXReverb effect.
451 Implemented SSE2 and SSE4.1 linear resamplers.
453 Implemented Neon-enhanced non-HRTF mixers.
455 Implemented a QSA backend, for QNX.
457 Implemented the ALC_SOFT_pause_device, AL_SOFT_deferred_updates,
458 AL_SOFT_block_alignment, AL_SOFT_MSADPCM, and AL_SOFT_source_length
461 Fixed resetting mmdevapi backend devices.
463 Fixed clamping when converting 32-bit float samples to integer.
465 Fixed modulation range in the Modulator effect.
467 Several fixes for the OpenSL playback backend.
469 Fixed device specifier names that have Unicode characters on Windows.
471 Added support for filenames and paths with Unicode (UTF-8) characters on
474 Added support for alsoft.conf config files found in XDG Base Directory
475 Specification locations (XDG_CONFIG_DIRS and XDG_CONFIG_HOME, or their
476 defaults) on non-Windows systems.
478 Added a GUI configuration utility (requires Qt 4.8).
480 Added support for environment variable expansion in config options (not
481 keys or section names).
483 Added an example that uses SDL2 and ffmpeg.
485 Modified examples to use SDL_sound.
487 Modified CMake config option names for better sorting.
489 HRTF data sets specified in the hrtf_tables config option may now be
490 relative or absolute filenames.
492 Made the default HRTF data set an external file, and added a data set for
493 48khz playback in addition to 44.1khz.
495 Added support for C11 atomic methods.
497 Improved support for some non-GNU build systems.
501 Fixed a regression with retrieving the source's AL_GAIN property.
505 Fixed device enumeration with the OSS backend.
507 Reorganized internal mixing logic, so unneeded steps can potentially be
508 skipped for better performance.
510 Removed the lookup table for calculating the mixing pans. The panning is
511 now calculated directly for better precision.
513 Improved the panning of stereo source channels when using stereo output.
515 Improved source filter quality on send paths.
517 Added a config option to allow PulseAudio to move streams between devices.
519 The PulseAudio backend will now attempt to spawn a server by default.
521 Added a workaround for a DirectSound bug relating to float32 output.
523 Added SSE-based mixers, for HRTF and non-HRTF mixing.
525 Added support for the new AL_SOFT_source_latency extension.
527 Improved ALSA capture by avoiding an extra buffer when using sizes
528 supported by the underlying device.
530 Improved the makehrtf utility to support new options and input formats.
532 Modified the CFLAGS declared in the pkg-config file so the "AL/" portion of
533 the header includes can optionally be omitted.
535 Added a couple example code programs to show how to apply reverb, and
538 The configuration sample is now installed into the share/openal/ directory
539 instead of /etc/openal.
541 The configuration sample now gets installed by default.