3 Implemented the ALC_SOFT_device_clock extension.
5 Added support fot 24-bit, dual-ear HRTF data sets. The built-in data set
6 has been updated to 24-bit.
8 Added a 24- to 48-point band-limited Sinc resampler.
10 Added an SDL2 playback backend. Disabled by default to avoid a dependency
13 Improved the efficiency of the band-limited Sinc resampler.
15 Improved the Sinc resampler's transition band to avoid over-attenuating
18 Replaced the 4-point Sinc resampler with a more efficient cubic resampler.
20 Fixed compiling on FreeBSD systems that use freebsd-lib 9.1.
22 Fixed compiling on NetBSD.
24 Improved the performance and quality of the Chorus effect.
26 Removed the reverb effect's modulation stage. Due to the lack of reference
29 Improved AL call error logging with contextualized messages.
31 Improved the efficiency of object ID lookups.
33 Improved efficienty of internal voice/source synchronization.
35 Fixed the reverb effect's density scale.
37 Fixed the reverb effect's panning parameters.
39 Increased the number of virtual channels for decoding Ambisonics to HRTF
42 Implemented the Pitch Shifter effect.
44 Renamed the MMDevAPI backend to WASAPI.
46 Fixed using the WASAPI backend with certain games, which caused odd COM
47 initialization errors.
49 Improved the performance of some filter operations.
53 Fixed resetting the FPU rounding mode after certain function calls on
56 Fixed use of SSE intrinsics when building with Clang on Windows.
58 Fixed a crash with the JACK backend when using JACK1.
60 Fixed use of pthread_setnane_np on NetBSD.
62 Fixed building on FreeBSD with an older freebsd-lib.
64 OSS now links with libossaudio if found at build time (for NetBSD).
68 Fixed an issue where resuming a source might not restart playing it.
70 Fixed PulseAudio playback when the configured stream length is much less
71 than the requested length.
73 Fixed MMDevAPI capture with sample rates not matching the backing device.
75 Fixed int32 output for the Wave Writer.
77 Fixed enumeration of OSS devices that are missing device files.
79 Added correct retrieval of the executable's path on FreeBSD.
81 Added a config option to specify the dithering depth.
83 Added a 5.1 decoder preset that excludes front-center output.
87 Implemented the AL_EXT_STEREO_ANGLES and AL_EXT_SOURCE_RADIUS extensions.
89 Implemented the AL_SOFT_gain_clamp_ex, AL_SOFT_source_resampler,
90 AL_SOFT_source_spatialize, and ALC_SOFT_output_limiter extensions.
92 Implemented 3D processing for some effects. Currently implemented for
93 Reverb, Compressor, Equalizer, and Ring Modulator.
95 Implemented 2-channel UHJ output encoding. This needs to be enabled with a
96 config option to be used.
98 Implemented dual-band processing for high-quality ambisonic decoding.
100 Implemented distance-compensation for surround sound output.
102 Implemented near-field emulation and compensation with ambisonic rendering.
103 Currently only applies when using the high-quality ambisonic decoder or
104 ambisonic output, with appropriate config options.
106 Implemented an output limiter to reduce the amount of distortion from
109 Implemented dithering for 8-bit and 16-bit output.
111 Implemented a config option to select a preferred HRTF.
113 Implemented a run-time check for NEON extensions using /proc/cpuinfo.
115 Implemented experimental capture support for the OpenSL backend.
117 Fixed building on compilers with NEON support but don't default to having
120 Fixed support for JACK on Windows.
122 Fixed starting a source while alcSuspendContext is in effect.
124 Fixed detection of headsets as headphones, with MMDevAPI.
126 Added support for AmbDec config files, for custom ambisonic decoder
127 configurations. Version 3 files only.
129 Added backend-specific options to alsoft-config.
131 Added first-, second-, and third-order ambisonic output formats. Currently
132 only works with backends that don't rely on channel labels, like JACK,
135 Added a build option to embed the default HRTFs into the lib.
137 Added AmbDec presets to enable high-quality ambisonic decoding.
139 Added an AmbDec preset for 3D7.1 speaker setups.
141 Added documentation regarding Ambisonics, 3D7.1, AmbDec config files, and
142 the provided ambdec presets.
144 Added the ability for MMDevAPI to open devices given a Device ID or GUID
147 Added an option to the example apps to open a specific device.
149 Increased the maximum auxiliary send limit to 16 (up from 4). Requires
150 requesting them with the ALC_MAX_AUXILIARY_SENDS context creation
153 Increased the default auxiliary effect slot count to 64 (up from 4).
155 Reduced the default period count to 3 (down from 4).
157 Slightly improved automatic naming for enumerated HRTFs.
159 Improved B-Format decoding with HRTF output.
161 Improved internal property handling for better batching behavior.
163 Improved performance of certain filter uses.
165 Removed support for the AL_SOFT_buffer_samples and AL_SOFT_buffer_sub_data
166 extensions. Due to conflicts with AL_EXT_SOURCE_RADIUS.
170 Implemented device enumeration for OSSv4.
172 Fixed building on OSX.
174 Fixed building on non-Windows systems without POSIX-2008.
176 Fixed Dedicated Dialog and Dedicated LFE effect output.
178 Added a build option to override the share install dir.
180 Added a build option to static-link libgcc for MinGW.
184 Fixed building with JACK and without PulseAudio.
186 Fixed building on FreeBSD.
188 Fixed the ALSA backend's allow-resampler option.
190 Fixed handling of inexact ALSA period counts.
192 Altered device naming scheme on Windows backends to better match other
195 Updated the CoreAudio backend to use the AudioComponent API. This clears up
196 deprecation warnings for OSX 10.11, although requires OSX 10.6 or newer.
200 Implemented a JACK playback backend.
202 Implemented the AL_EXT_BFORMAT and AL_EXT_MULAW_BFORMAT extensions.
204 Implemented the ALC_SOFT_HRTF extension.
206 Implemented C, SSE3, and SSE4.1 based 4- and 8-point Sinc resamplers.
208 Implemented a C and SSE based band-limited Sinc resampler. This does 12- to
209 24-point Sinc resampling, and performs anti-aliasing.
211 Implemented B-Format output support for the wave file writer. This creates
212 FuMa-style first-order Ambisonics wave files (AMB format).
214 Implemented a stereo-mode config option for treating stereo modes as either
215 speakers or headphones.
217 Implemented per-device configuration options.
219 Fixed handling of PulseAudio and MMDevAPI devices that have identical
222 Fixed a potential lockup when stopping playback of suspended PulseAudio devices.
224 Fixed logging of Unicode characters on Windows.
226 Fixed 5.1 surround sound channels. By default it will now use the side
227 channels for the surround output. A configuration using rear channels is
230 Fixed the QSA backend potentially altering the capture format.
232 Fixed detecting MMDevAPI's default device.
234 Fixed returning the default capture device name.
236 Fixed mixing property calculations when deferring context updates.
238 Altered the behavior of alcSuspendContext and alcProcessContext to better
239 match certain Windows drivers.
241 Altered the panning algorithm, utilizing Ambisonics for better side and
242 back positioning cues with surround sound output.
244 Improved support for certain older Windows apps.
246 Improved the alffplay example to support surround sound streams.
248 Improved support for building as a sub-project.
250 Added an HRTF playback example.
252 Added a tone generator output test.
254 Added a toolchain to help with cross-compiling to Android.
258 Implemented EFX Chorus, Flanger, Distortion, Equalizer, and Compressor
261 Implemented high-pass and band-pass EFX filters.
263 Implemented the high-pass filter for the EAXReverb effect.
265 Implemented SSE2 and SSE4.1 linear resamplers.
267 Implemented Neon-enhanced non-HRTF mixers.
269 Implemented a QSA backend, for QNX.
271 Implemented the ALC_SOFT_pause_device, AL_SOFT_deferred_updates,
272 AL_SOFT_block_alignment, AL_SOFT_MSADPCM, and AL_SOFT_source_length
275 Fixed resetting mmdevapi backend devices.
277 Fixed clamping when converting 32-bit float samples to integer.
279 Fixed modulation range in the Modulator effect.
281 Several fixes for the OpenSL playback backend.
283 Fixed device specifier names that have Unicode characters on Windows.
285 Added support for filenames and paths with Unicode (UTF-8) characters on
288 Added support for alsoft.conf config files found in XDG Base Directory
289 Specification locations (XDG_CONFIG_DIRS and XDG_CONFIG_HOME, or their
290 defaults) on non-Windows systems.
292 Added a GUI configuration utility (requires Qt 4.8).
294 Added support for environment variable expansion in config options (not
295 keys or section names).
297 Added an example that uses SDL2 and ffmpeg.
299 Modified examples to use SDL_sound.
301 Modified CMake config option names for better sorting.
303 HRTF data sets specified in the hrtf_tables config option may now be
304 relative or absolute filenames.
306 Made the default HRTF data set an external file, and added a data set for
307 48khz playback in addition to 44.1khz.
309 Added support for C11 atomic methods.
311 Improved support for some non-GNU build systems.
315 Fixed a regression with retrieving the source's AL_GAIN property.
319 Fixed device enumeration with the OSS backend.
321 Reorganized internal mixing logic, so unneeded steps can potentially be
322 skipped for better performance.
324 Removed the lookup table for calculating the mixing pans. The panning is
325 now calculated directly for better precision.
327 Improved the panning of stereo source channels when using stereo output.
329 Improved source filter quality on send paths.
331 Added a config option to allow PulseAudio to move streams between devices.
333 The PulseAudio backend will now attempt to spawn a server by default.
335 Added a workaround for a DirectSound bug relating to float32 output.
337 Added SSE-based mixers, for HRTF and non-HRTF mixing.
339 Added support for the new AL_SOFT_source_latency extension.
341 Improved ALSA capture by avoiding an extra buffer when using sizes
342 supported by the underlying device.
344 Improved the makehrtf utility to support new options and input formats.
346 Modified the CFLAGS declared in the pkg-config file so the "AL/" portion of
347 the header includes can optionally be omitted.
349 Added a couple example code programs to show how to apply reverb, and
352 The configuration sample is now installed into the share/openal/ directory
353 instead of /etc/openal.
355 The configuration sample now gets installed by default.