3 Implemented the ALC_SOFT_device_clock extension.
5 Implemented the Pitch Shifter, Frequency Shifter, and Autowah effects.
7 Fixed compiling on FreeBSD systems that use freebsd-lib 9.1.
9 Fixed compiling on NetBSD.
11 Fixed the reverb effect's density scale and panning parameters.
13 Fixed use of the WASAPI backend with certain games, which caused odd COM
14 initialization errors.
16 Increased the number of virtual channels for decoding Ambisonics to HRTF
19 Changed 32-bit x86 builds to use SSE2 math by default for performance.
20 Build-time options are available to use just SSE1 or x87 instead.
22 Replaced the 4-point Sinc resampler with a more efficient cubic resampler.
24 Renamed the MMDevAPI backend to WASAPI.
26 Added support for 24-bit, dual-ear HRTF data sets. The built-in data set
27 has been updated to 24-bit.
29 Added a 24- to 48-point band-limited Sinc resampler.
31 Added an SDL2 playback backend. Disabled by default to avoid a dependency
34 Improved the performance and quality of the Chorus and Flanger effects.
36 Improved the efficiency of the band-limited Sinc resampler.
38 Improved the Sinc resampler's transition band to avoid over-attenuating
41 Improved the performance of some filter operations.
43 Improved the efficiency of object ID lookups.
45 Improved the efficienty of internal voice/source synchronization.
47 Improved AL call error logging with contextualized messages.
49 Removed the reverb effect's modulation stage. Due to the lack of reference
50 for its intended behavior and strength.
54 Fixed resetting the FPU rounding mode after certain function calls on
57 Fixed use of SSE intrinsics when building with Clang on Windows.
59 Fixed a crash with the JACK backend when using JACK1.
61 Fixed use of pthread_setnane_np on NetBSD.
63 Fixed building on FreeBSD with an older freebsd-lib.
65 OSS now links with libossaudio if found at build time (for NetBSD).
69 Fixed an issue where resuming a source might not restart playing it.
71 Fixed PulseAudio playback when the configured stream length is much less
72 than the requested length.
74 Fixed MMDevAPI capture with sample rates not matching the backing device.
76 Fixed int32 output for the Wave Writer.
78 Fixed enumeration of OSS devices that are missing device files.
80 Added correct retrieval of the executable's path on FreeBSD.
82 Added a config option to specify the dithering depth.
84 Added a 5.1 decoder preset that excludes front-center output.
88 Implemented the AL_EXT_STEREO_ANGLES and AL_EXT_SOURCE_RADIUS extensions.
90 Implemented the AL_SOFT_gain_clamp_ex, AL_SOFT_source_resampler,
91 AL_SOFT_source_spatialize, and ALC_SOFT_output_limiter extensions.
93 Implemented 3D processing for some effects. Currently implemented for
94 Reverb, Compressor, Equalizer, and Ring Modulator.
96 Implemented 2-channel UHJ output encoding. This needs to be enabled with a
97 config option to be used.
99 Implemented dual-band processing for high-quality ambisonic decoding.
101 Implemented distance-compensation for surround sound output.
103 Implemented near-field emulation and compensation with ambisonic rendering.
104 Currently only applies when using the high-quality ambisonic decoder or
105 ambisonic output, with appropriate config options.
107 Implemented an output limiter to reduce the amount of distortion from
110 Implemented dithering for 8-bit and 16-bit output.
112 Implemented a config option to select a preferred HRTF.
114 Implemented a run-time check for NEON extensions using /proc/cpuinfo.
116 Implemented experimental capture support for the OpenSL backend.
118 Fixed building on compilers with NEON support but don't default to having
121 Fixed support for JACK on Windows.
123 Fixed starting a source while alcSuspendContext is in effect.
125 Fixed detection of headsets as headphones, with MMDevAPI.
127 Added support for AmbDec config files, for custom ambisonic decoder
128 configurations. Version 3 files only.
130 Added backend-specific options to alsoft-config.
132 Added first-, second-, and third-order ambisonic output formats. Currently
133 only works with backends that don't rely on channel labels, like JACK,
136 Added a build option to embed the default HRTFs into the lib.
138 Added AmbDec presets to enable high-quality ambisonic decoding.
140 Added an AmbDec preset for 3D7.1 speaker setups.
142 Added documentation regarding Ambisonics, 3D7.1, AmbDec config files, and
143 the provided ambdec presets.
145 Added the ability for MMDevAPI to open devices given a Device ID or GUID
148 Added an option to the example apps to open a specific device.
150 Increased the maximum auxiliary send limit to 16 (up from 4). Requires
151 requesting them with the ALC_MAX_AUXILIARY_SENDS context creation
154 Increased the default auxiliary effect slot count to 64 (up from 4).
156 Reduced the default period count to 3 (down from 4).
158 Slightly improved automatic naming for enumerated HRTFs.
160 Improved B-Format decoding with HRTF output.
162 Improved internal property handling for better batching behavior.
164 Improved performance of certain filter uses.
166 Removed support for the AL_SOFT_buffer_samples and AL_SOFT_buffer_sub_data
167 extensions. Due to conflicts with AL_EXT_SOURCE_RADIUS.
171 Implemented device enumeration for OSSv4.
173 Fixed building on OSX.
175 Fixed building on non-Windows systems without POSIX-2008.
177 Fixed Dedicated Dialog and Dedicated LFE effect output.
179 Added a build option to override the share install dir.
181 Added a build option to static-link libgcc for MinGW.
185 Fixed building with JACK and without PulseAudio.
187 Fixed building on FreeBSD.
189 Fixed the ALSA backend's allow-resampler option.
191 Fixed handling of inexact ALSA period counts.
193 Altered device naming scheme on Windows backends to better match other
196 Updated the CoreAudio backend to use the AudioComponent API. This clears up
197 deprecation warnings for OSX 10.11, although requires OSX 10.6 or newer.
201 Implemented a JACK playback backend.
203 Implemented the AL_EXT_BFORMAT and AL_EXT_MULAW_BFORMAT extensions.
205 Implemented the ALC_SOFT_HRTF extension.
207 Implemented C, SSE3, and SSE4.1 based 4- and 8-point Sinc resamplers.
209 Implemented a C and SSE based band-limited Sinc resampler. This does 12- to
210 24-point Sinc resampling, and performs anti-aliasing.
212 Implemented B-Format output support for the wave file writer. This creates
213 FuMa-style first-order Ambisonics wave files (AMB format).
215 Implemented a stereo-mode config option for treating stereo modes as either
216 speakers or headphones.
218 Implemented per-device configuration options.
220 Fixed handling of PulseAudio and MMDevAPI devices that have identical
223 Fixed a potential lockup when stopping playback of suspended PulseAudio devices.
225 Fixed logging of Unicode characters on Windows.
227 Fixed 5.1 surround sound channels. By default it will now use the side
228 channels for the surround output. A configuration using rear channels is
231 Fixed the QSA backend potentially altering the capture format.
233 Fixed detecting MMDevAPI's default device.
235 Fixed returning the default capture device name.
237 Fixed mixing property calculations when deferring context updates.
239 Altered the behavior of alcSuspendContext and alcProcessContext to better
240 match certain Windows drivers.
242 Altered the panning algorithm, utilizing Ambisonics for better side and
243 back positioning cues with surround sound output.
245 Improved support for certain older Windows apps.
247 Improved the alffplay example to support surround sound streams.
249 Improved support for building as a sub-project.
251 Added an HRTF playback example.
253 Added a tone generator output test.
255 Added a toolchain to help with cross-compiling to Android.
259 Implemented EFX Chorus, Flanger, Distortion, Equalizer, and Compressor
262 Implemented high-pass and band-pass EFX filters.
264 Implemented the high-pass filter for the EAXReverb effect.
266 Implemented SSE2 and SSE4.1 linear resamplers.
268 Implemented Neon-enhanced non-HRTF mixers.
270 Implemented a QSA backend, for QNX.
272 Implemented the ALC_SOFT_pause_device, AL_SOFT_deferred_updates,
273 AL_SOFT_block_alignment, AL_SOFT_MSADPCM, and AL_SOFT_source_length
276 Fixed resetting mmdevapi backend devices.
278 Fixed clamping when converting 32-bit float samples to integer.
280 Fixed modulation range in the Modulator effect.
282 Several fixes for the OpenSL playback backend.
284 Fixed device specifier names that have Unicode characters on Windows.
286 Added support for filenames and paths with Unicode (UTF-8) characters on
289 Added support for alsoft.conf config files found in XDG Base Directory
290 Specification locations (XDG_CONFIG_DIRS and XDG_CONFIG_HOME, or their
291 defaults) on non-Windows systems.
293 Added a GUI configuration utility (requires Qt 4.8).
295 Added support for environment variable expansion in config options (not
296 keys or section names).
298 Added an example that uses SDL2 and ffmpeg.
300 Modified examples to use SDL_sound.
302 Modified CMake config option names for better sorting.
304 HRTF data sets specified in the hrtf_tables config option may now be
305 relative or absolute filenames.
307 Made the default HRTF data set an external file, and added a data set for
308 48khz playback in addition to 44.1khz.
310 Added support for C11 atomic methods.
312 Improved support for some non-GNU build systems.
316 Fixed a regression with retrieving the source's AL_GAIN property.
320 Fixed device enumeration with the OSS backend.
322 Reorganized internal mixing logic, so unneeded steps can potentially be
323 skipped for better performance.
325 Removed the lookup table for calculating the mixing pans. The panning is
326 now calculated directly for better precision.
328 Improved the panning of stereo source channels when using stereo output.
330 Improved source filter quality on send paths.
332 Added a config option to allow PulseAudio to move streams between devices.
334 The PulseAudio backend will now attempt to spawn a server by default.
336 Added a workaround for a DirectSound bug relating to float32 output.
338 Added SSE-based mixers, for HRTF and non-HRTF mixing.
340 Added support for the new AL_SOFT_source_latency extension.
342 Improved ALSA capture by avoiding an extra buffer when using sizes
343 supported by the underlying device.
345 Improved the makehrtf utility to support new options and input formats.
347 Modified the CFLAGS declared in the pkg-config file so the "AL/" portion of
348 the header includes can optionally be omitted.
350 Added a couple example code programs to show how to apply reverb, and
353 The configuration sample is now installed into the share/openal/ directory
354 instead of /etc/openal.
356 The configuration sample now gets installed by default.