3 Implemented capture support for the SoundIO backend.
5 Fixed source buffer queues potentially not playing properly when a queue
8 Fixed possible unexpected failures when generating auxiliary effect slots.
10 Fixed a crash with certain reverb or device settings.
16 Implemented the ALC_SOFT_device_clock extension.
18 Implemented the Pitch Shifter, Frequency Shifter, and Autowah effects.
20 Fixed compiling on FreeBSD systems that use freebsd-lib 9.1.
22 Fixed compiling on NetBSD.
24 Fixed the reverb effect's density scale and panning parameters.
26 Fixed use of the WASAPI backend with certain games, which caused odd COM
27 initialization errors.
29 Increased the number of virtual channels for decoding Ambisonics to HRTF
32 Changed 32-bit x86 builds to use SSE2 math by default for performance.
33 Build-time options are available to use just SSE1 or x87 instead.
35 Replaced the 4-point Sinc resampler with a more efficient cubic resampler.
37 Renamed the MMDevAPI backend to WASAPI.
39 Added support for 24-bit, dual-ear HRTF data sets. The built-in data set
40 has been updated to 24-bit.
42 Added a 24- to 48-point band-limited Sinc resampler.
44 Added an SDL2 playback backend. Disabled by default to avoid a dependency
47 Improved the performance and quality of the Chorus and Flanger effects.
49 Improved the efficiency of the band-limited Sinc resampler.
51 Improved the Sinc resampler's transition band to avoid over-attenuating
54 Improved the performance of some filter operations.
56 Improved the efficiency of object ID lookups.
58 Improved the efficienty of internal voice/source synchronization.
60 Improved AL call error logging with contextualized messages.
62 Removed the reverb effect's modulation stage. Due to the lack of reference
63 for its intended behavior and strength.
67 Fixed resetting the FPU rounding mode after certain function calls on
70 Fixed use of SSE intrinsics when building with Clang on Windows.
72 Fixed a crash with the JACK backend when using JACK1.
74 Fixed use of pthread_setnane_np on NetBSD.
76 Fixed building on FreeBSD with an older freebsd-lib.
78 OSS now links with libossaudio if found at build time (for NetBSD).
82 Fixed an issue where resuming a source might not restart playing it.
84 Fixed PulseAudio playback when the configured stream length is much less
85 than the requested length.
87 Fixed MMDevAPI capture with sample rates not matching the backing device.
89 Fixed int32 output for the Wave Writer.
91 Fixed enumeration of OSS devices that are missing device files.
93 Added correct retrieval of the executable's path on FreeBSD.
95 Added a config option to specify the dithering depth.
97 Added a 5.1 decoder preset that excludes front-center output.
101 Implemented the AL_EXT_STEREO_ANGLES and AL_EXT_SOURCE_RADIUS extensions.
103 Implemented the AL_SOFT_gain_clamp_ex, AL_SOFT_source_resampler,
104 AL_SOFT_source_spatialize, and ALC_SOFT_output_limiter extensions.
106 Implemented 3D processing for some effects. Currently implemented for
107 Reverb, Compressor, Equalizer, and Ring Modulator.
109 Implemented 2-channel UHJ output encoding. This needs to be enabled with a
110 config option to be used.
112 Implemented dual-band processing for high-quality ambisonic decoding.
114 Implemented distance-compensation for surround sound output.
116 Implemented near-field emulation and compensation with ambisonic rendering.
117 Currently only applies when using the high-quality ambisonic decoder or
118 ambisonic output, with appropriate config options.
120 Implemented an output limiter to reduce the amount of distortion from
123 Implemented dithering for 8-bit and 16-bit output.
125 Implemented a config option to select a preferred HRTF.
127 Implemented a run-time check for NEON extensions using /proc/cpuinfo.
129 Implemented experimental capture support for the OpenSL backend.
131 Fixed building on compilers with NEON support but don't default to having
134 Fixed support for JACK on Windows.
136 Fixed starting a source while alcSuspendContext is in effect.
138 Fixed detection of headsets as headphones, with MMDevAPI.
140 Added support for AmbDec config files, for custom ambisonic decoder
141 configurations. Version 3 files only.
143 Added backend-specific options to alsoft-config.
145 Added first-, second-, and third-order ambisonic output formats. Currently
146 only works with backends that don't rely on channel labels, like JACK,
149 Added a build option to embed the default HRTFs into the lib.
151 Added AmbDec presets to enable high-quality ambisonic decoding.
153 Added an AmbDec preset for 3D7.1 speaker setups.
155 Added documentation regarding Ambisonics, 3D7.1, AmbDec config files, and
156 the provided ambdec presets.
158 Added the ability for MMDevAPI to open devices given a Device ID or GUID
161 Added an option to the example apps to open a specific device.
163 Increased the maximum auxiliary send limit to 16 (up from 4). Requires
164 requesting them with the ALC_MAX_AUXILIARY_SENDS context creation
167 Increased the default auxiliary effect slot count to 64 (up from 4).
169 Reduced the default period count to 3 (down from 4).
171 Slightly improved automatic naming for enumerated HRTFs.
173 Improved B-Format decoding with HRTF output.
175 Improved internal property handling for better batching behavior.
177 Improved performance of certain filter uses.
179 Removed support for the AL_SOFT_buffer_samples and AL_SOFT_buffer_sub_data
180 extensions. Due to conflicts with AL_EXT_SOURCE_RADIUS.
184 Implemented device enumeration for OSSv4.
186 Fixed building on OSX.
188 Fixed building on non-Windows systems without POSIX-2008.
190 Fixed Dedicated Dialog and Dedicated LFE effect output.
192 Added a build option to override the share install dir.
194 Added a build option to static-link libgcc for MinGW.
198 Fixed building with JACK and without PulseAudio.
200 Fixed building on FreeBSD.
202 Fixed the ALSA backend's allow-resampler option.
204 Fixed handling of inexact ALSA period counts.
206 Altered device naming scheme on Windows backends to better match other
209 Updated the CoreAudio backend to use the AudioComponent API. This clears up
210 deprecation warnings for OSX 10.11, although requires OSX 10.6 or newer.
214 Implemented a JACK playback backend.
216 Implemented the AL_EXT_BFORMAT and AL_EXT_MULAW_BFORMAT extensions.
218 Implemented the ALC_SOFT_HRTF extension.
220 Implemented C, SSE3, and SSE4.1 based 4- and 8-point Sinc resamplers.
222 Implemented a C and SSE based band-limited Sinc resampler. This does 12- to
223 24-point Sinc resampling, and performs anti-aliasing.
225 Implemented B-Format output support for the wave file writer. This creates
226 FuMa-style first-order Ambisonics wave files (AMB format).
228 Implemented a stereo-mode config option for treating stereo modes as either
229 speakers or headphones.
231 Implemented per-device configuration options.
233 Fixed handling of PulseAudio and MMDevAPI devices that have identical
236 Fixed a potential lockup when stopping playback of suspended PulseAudio devices.
238 Fixed logging of Unicode characters on Windows.
240 Fixed 5.1 surround sound channels. By default it will now use the side
241 channels for the surround output. A configuration using rear channels is
244 Fixed the QSA backend potentially altering the capture format.
246 Fixed detecting MMDevAPI's default device.
248 Fixed returning the default capture device name.
250 Fixed mixing property calculations when deferring context updates.
252 Altered the behavior of alcSuspendContext and alcProcessContext to better
253 match certain Windows drivers.
255 Altered the panning algorithm, utilizing Ambisonics for better side and
256 back positioning cues with surround sound output.
258 Improved support for certain older Windows apps.
260 Improved the alffplay example to support surround sound streams.
262 Improved support for building as a sub-project.
264 Added an HRTF playback example.
266 Added a tone generator output test.
268 Added a toolchain to help with cross-compiling to Android.
272 Implemented EFX Chorus, Flanger, Distortion, Equalizer, and Compressor
275 Implemented high-pass and band-pass EFX filters.
277 Implemented the high-pass filter for the EAXReverb effect.
279 Implemented SSE2 and SSE4.1 linear resamplers.
281 Implemented Neon-enhanced non-HRTF mixers.
283 Implemented a QSA backend, for QNX.
285 Implemented the ALC_SOFT_pause_device, AL_SOFT_deferred_updates,
286 AL_SOFT_block_alignment, AL_SOFT_MSADPCM, and AL_SOFT_source_length
289 Fixed resetting mmdevapi backend devices.
291 Fixed clamping when converting 32-bit float samples to integer.
293 Fixed modulation range in the Modulator effect.
295 Several fixes for the OpenSL playback backend.
297 Fixed device specifier names that have Unicode characters on Windows.
299 Added support for filenames and paths with Unicode (UTF-8) characters on
302 Added support for alsoft.conf config files found in XDG Base Directory
303 Specification locations (XDG_CONFIG_DIRS and XDG_CONFIG_HOME, or their
304 defaults) on non-Windows systems.
306 Added a GUI configuration utility (requires Qt 4.8).
308 Added support for environment variable expansion in config options (not
309 keys or section names).
311 Added an example that uses SDL2 and ffmpeg.
313 Modified examples to use SDL_sound.
315 Modified CMake config option names for better sorting.
317 HRTF data sets specified in the hrtf_tables config option may now be
318 relative or absolute filenames.
320 Made the default HRTF data set an external file, and added a data set for
321 48khz playback in addition to 44.1khz.
323 Added support for C11 atomic methods.
325 Improved support for some non-GNU build systems.
329 Fixed a regression with retrieving the source's AL_GAIN property.
333 Fixed device enumeration with the OSS backend.
335 Reorganized internal mixing logic, so unneeded steps can potentially be
336 skipped for better performance.
338 Removed the lookup table for calculating the mixing pans. The panning is
339 now calculated directly for better precision.
341 Improved the panning of stereo source channels when using stereo output.
343 Improved source filter quality on send paths.
345 Added a config option to allow PulseAudio to move streams between devices.
347 The PulseAudio backend will now attempt to spawn a server by default.
349 Added a workaround for a DirectSound bug relating to float32 output.
351 Added SSE-based mixers, for HRTF and non-HRTF mixing.
353 Added support for the new AL_SOFT_source_latency extension.
355 Improved ALSA capture by avoiding an extra buffer when using sizes
356 supported by the underlying device.
358 Improved the makehrtf utility to support new options and input formats.
360 Modified the CFLAGS declared in the pkg-config file so the "AL/" portion of
361 the header includes can optionally be omitted.
363 Added a couple example code programs to show how to apply reverb, and
366 The configuration sample is now installed into the share/openal/ directory
367 instead of /etc/openal.
369 The configuration sample now gets installed by default.