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.
14 Improved output limiter response, better ensuring the sample amplitude is
19 Implemented the ALC_SOFT_device_clock extension.
21 Implemented the Pitch Shifter, Frequency Shifter, and Autowah effects.
23 Fixed compiling on FreeBSD systems that use freebsd-lib 9.1.
25 Fixed compiling on NetBSD.
27 Fixed the reverb effect's density scale and panning parameters.
29 Fixed use of the WASAPI backend with certain games, which caused odd COM
30 initialization errors.
32 Increased the number of virtual channels for decoding Ambisonics to HRTF
35 Changed 32-bit x86 builds to use SSE2 math by default for performance.
36 Build-time options are available to use just SSE1 or x87 instead.
38 Replaced the 4-point Sinc resampler with a more efficient cubic resampler.
40 Renamed the MMDevAPI backend to WASAPI.
42 Added support for 24-bit, dual-ear HRTF data sets. The built-in data set
43 has been updated to 24-bit.
45 Added a 24- to 48-point band-limited Sinc resampler.
47 Added an SDL2 playback backend. Disabled by default to avoid a dependency
50 Improved the performance and quality of the Chorus and Flanger effects.
52 Improved the efficiency of the band-limited Sinc resampler.
54 Improved the Sinc resampler's transition band to avoid over-attenuating
57 Improved the performance of some filter operations.
59 Improved the efficiency of object ID lookups.
61 Improved the efficienty of internal voice/source synchronization.
63 Improved AL call error logging with contextualized messages.
65 Removed the reverb effect's modulation stage. Due to the lack of reference
66 for its intended behavior and strength.
70 Fixed resetting the FPU rounding mode after certain function calls on
73 Fixed use of SSE intrinsics when building with Clang on Windows.
75 Fixed a crash with the JACK backend when using JACK1.
77 Fixed use of pthread_setnane_np on NetBSD.
79 Fixed building on FreeBSD with an older freebsd-lib.
81 OSS now links with libossaudio if found at build time (for NetBSD).
85 Fixed an issue where resuming a source might not restart playing it.
87 Fixed PulseAudio playback when the configured stream length is much less
88 than the requested length.
90 Fixed MMDevAPI capture with sample rates not matching the backing device.
92 Fixed int32 output for the Wave Writer.
94 Fixed enumeration of OSS devices that are missing device files.
96 Added correct retrieval of the executable's path on FreeBSD.
98 Added a config option to specify the dithering depth.
100 Added a 5.1 decoder preset that excludes front-center output.
104 Implemented the AL_EXT_STEREO_ANGLES and AL_EXT_SOURCE_RADIUS extensions.
106 Implemented the AL_SOFT_gain_clamp_ex, AL_SOFT_source_resampler,
107 AL_SOFT_source_spatialize, and ALC_SOFT_output_limiter extensions.
109 Implemented 3D processing for some effects. Currently implemented for
110 Reverb, Compressor, Equalizer, and Ring Modulator.
112 Implemented 2-channel UHJ output encoding. This needs to be enabled with a
113 config option to be used.
115 Implemented dual-band processing for high-quality ambisonic decoding.
117 Implemented distance-compensation for surround sound output.
119 Implemented near-field emulation and compensation with ambisonic rendering.
120 Currently only applies when using the high-quality ambisonic decoder or
121 ambisonic output, with appropriate config options.
123 Implemented an output limiter to reduce the amount of distortion from
126 Implemented dithering for 8-bit and 16-bit output.
128 Implemented a config option to select a preferred HRTF.
130 Implemented a run-time check for NEON extensions using /proc/cpuinfo.
132 Implemented experimental capture support for the OpenSL backend.
134 Fixed building on compilers with NEON support but don't default to having
137 Fixed support for JACK on Windows.
139 Fixed starting a source while alcSuspendContext is in effect.
141 Fixed detection of headsets as headphones, with MMDevAPI.
143 Added support for AmbDec config files, for custom ambisonic decoder
144 configurations. Version 3 files only.
146 Added backend-specific options to alsoft-config.
148 Added first-, second-, and third-order ambisonic output formats. Currently
149 only works with backends that don't rely on channel labels, like JACK,
152 Added a build option to embed the default HRTFs into the lib.
154 Added AmbDec presets to enable high-quality ambisonic decoding.
156 Added an AmbDec preset for 3D7.1 speaker setups.
158 Added documentation regarding Ambisonics, 3D7.1, AmbDec config files, and
159 the provided ambdec presets.
161 Added the ability for MMDevAPI to open devices given a Device ID or GUID
164 Added an option to the example apps to open a specific device.
166 Increased the maximum auxiliary send limit to 16 (up from 4). Requires
167 requesting them with the ALC_MAX_AUXILIARY_SENDS context creation
170 Increased the default auxiliary effect slot count to 64 (up from 4).
172 Reduced the default period count to 3 (down from 4).
174 Slightly improved automatic naming for enumerated HRTFs.
176 Improved B-Format decoding with HRTF output.
178 Improved internal property handling for better batching behavior.
180 Improved performance of certain filter uses.
182 Removed support for the AL_SOFT_buffer_samples and AL_SOFT_buffer_sub_data
183 extensions. Due to conflicts with AL_EXT_SOURCE_RADIUS.
187 Implemented device enumeration for OSSv4.
189 Fixed building on OSX.
191 Fixed building on non-Windows systems without POSIX-2008.
193 Fixed Dedicated Dialog and Dedicated LFE effect output.
195 Added a build option to override the share install dir.
197 Added a build option to static-link libgcc for MinGW.
201 Fixed building with JACK and without PulseAudio.
203 Fixed building on FreeBSD.
205 Fixed the ALSA backend's allow-resampler option.
207 Fixed handling of inexact ALSA period counts.
209 Altered device naming scheme on Windows backends to better match other
212 Updated the CoreAudio backend to use the AudioComponent API. This clears up
213 deprecation warnings for OSX 10.11, although requires OSX 10.6 or newer.
217 Implemented a JACK playback backend.
219 Implemented the AL_EXT_BFORMAT and AL_EXT_MULAW_BFORMAT extensions.
221 Implemented the ALC_SOFT_HRTF extension.
223 Implemented C, SSE3, and SSE4.1 based 4- and 8-point Sinc resamplers.
225 Implemented a C and SSE based band-limited Sinc resampler. This does 12- to
226 24-point Sinc resampling, and performs anti-aliasing.
228 Implemented B-Format output support for the wave file writer. This creates
229 FuMa-style first-order Ambisonics wave files (AMB format).
231 Implemented a stereo-mode config option for treating stereo modes as either
232 speakers or headphones.
234 Implemented per-device configuration options.
236 Fixed handling of PulseAudio and MMDevAPI devices that have identical
239 Fixed a potential lockup when stopping playback of suspended PulseAudio devices.
241 Fixed logging of Unicode characters on Windows.
243 Fixed 5.1 surround sound channels. By default it will now use the side
244 channels for the surround output. A configuration using rear channels is
247 Fixed the QSA backend potentially altering the capture format.
249 Fixed detecting MMDevAPI's default device.
251 Fixed returning the default capture device name.
253 Fixed mixing property calculations when deferring context updates.
255 Altered the behavior of alcSuspendContext and alcProcessContext to better
256 match certain Windows drivers.
258 Altered the panning algorithm, utilizing Ambisonics for better side and
259 back positioning cues with surround sound output.
261 Improved support for certain older Windows apps.
263 Improved the alffplay example to support surround sound streams.
265 Improved support for building as a sub-project.
267 Added an HRTF playback example.
269 Added a tone generator output test.
271 Added a toolchain to help with cross-compiling to Android.
275 Implemented EFX Chorus, Flanger, Distortion, Equalizer, and Compressor
278 Implemented high-pass and band-pass EFX filters.
280 Implemented the high-pass filter for the EAXReverb effect.
282 Implemented SSE2 and SSE4.1 linear resamplers.
284 Implemented Neon-enhanced non-HRTF mixers.
286 Implemented a QSA backend, for QNX.
288 Implemented the ALC_SOFT_pause_device, AL_SOFT_deferred_updates,
289 AL_SOFT_block_alignment, AL_SOFT_MSADPCM, and AL_SOFT_source_length
292 Fixed resetting mmdevapi backend devices.
294 Fixed clamping when converting 32-bit float samples to integer.
296 Fixed modulation range in the Modulator effect.
298 Several fixes for the OpenSL playback backend.
300 Fixed device specifier names that have Unicode characters on Windows.
302 Added support for filenames and paths with Unicode (UTF-8) characters on
305 Added support for alsoft.conf config files found in XDG Base Directory
306 Specification locations (XDG_CONFIG_DIRS and XDG_CONFIG_HOME, or their
307 defaults) on non-Windows systems.
309 Added a GUI configuration utility (requires Qt 4.8).
311 Added support for environment variable expansion in config options (not
312 keys or section names).
314 Added an example that uses SDL2 and ffmpeg.
316 Modified examples to use SDL_sound.
318 Modified CMake config option names for better sorting.
320 HRTF data sets specified in the hrtf_tables config option may now be
321 relative or absolute filenames.
323 Made the default HRTF data set an external file, and added a data set for
324 48khz playback in addition to 44.1khz.
326 Added support for C11 atomic methods.
328 Improved support for some non-GNU build systems.
332 Fixed a regression with retrieving the source's AL_GAIN property.
336 Fixed device enumeration with the OSS backend.
338 Reorganized internal mixing logic, so unneeded steps can potentially be
339 skipped for better performance.
341 Removed the lookup table for calculating the mixing pans. The panning is
342 now calculated directly for better precision.
344 Improved the panning of stereo source channels when using stereo output.
346 Improved source filter quality on send paths.
348 Added a config option to allow PulseAudio to move streams between devices.
350 The PulseAudio backend will now attempt to spawn a server by default.
352 Added a workaround for a DirectSound bug relating to float32 output.
354 Added SSE-based mixers, for HRTF and non-HRTF mixing.
356 Added support for the new AL_SOFT_source_latency extension.
358 Improved ALSA capture by avoiding an extra buffer when using sizes
359 supported by the underlying device.
361 Improved the makehrtf utility to support new options and input formats.
363 Modified the CFLAGS declared in the pkg-config file so the "AL/" portion of
364 the header includes can optionally be omitted.
366 Added a couple example code programs to show how to apply reverb, and
369 The configuration sample is now installed into the share/openal/ directory
370 instead of /etc/openal.
372 The configuration sample now gets installed by default.