1 # OpenAL config file. Options that are not under a block or are under the
2 # [general] block are for general, non-backend-specific options. Blocks may
3 # appear multiple times, and duplicated options will take the last value
5 # The system-wide settings can be put in /etc/openal/alsoft.conf and user-
6 # specific override settings in ~/.alsoftrc.
7 # For Windows, these settings should go into %AppData%\alsoft.ini
9 # Option and block names are case-insenstive. The supplied values are only
10 # hints and may not be honored (though generally it'll try to get as close as
11 # possible). Note: options that are left unset may default to app- or system-
12 # specified values. These are the current available settings:
15 # Disables use of the listed CPU extensions. Certain methods may utilize CPU
16 # extensions when detected, and this option is useful for preventing those
17 # extensions from being used. The available extensions are: neon. Specifying
18 # 'all' disables use of all extensions.
22 # Sets the output channel configuration. If left unspecified, one will try to
23 # be detected from the system, and defaulting to stereo. The available values
24 # are: mono, stereo, quad, surround51, surround61, surround71
28 # Sets the output sample type. Currently, all mixing is done with 32-bit float
29 # and converted to the output sample type as needed. Available values are:
30 # int8 - signed 8-bit int
31 # uint8 - unsigned 8-bit int
32 # int16 - signed 16-bit int
33 # uint16 - unsigned 16-bit int
34 # int32 - signed 32-bit int
35 # uint32 - unsigned 32-bit int
36 # float32 - 32-bit float
37 #sample-type = float32
40 # Enables HRTF filters. These filters provide for better sound spatialization
41 # while using headphones. The default filter will only work when output is
42 # 44100hz stereo. While HRTF is active, the cf_level option is disabled.
43 # Default is disabled since stereo speaker output quality may suffer.
47 # Specifies a comma-separated list of files containing HRTF data sets. The
48 # listed data sets can be used in place of or in addiiton to the the built-in
49 # set. The format of the files are described in hrtf.txt.
53 # Sets the crossfeed level for stereo output. Valid values are:
56 # 2 - Middle crossfeed
57 # 3 - High crossfeed (virtual speakers are closer to itself)
58 # 4 - Low easy crossfeed
59 # 5 - Middle easy crossfeed
60 # 6 - High easy crossfeed
61 # Users of headphones may want to try various settings. Has no effect on non-
66 # Specifies that stereo sources are given a width of about 120 degrees on each
67 # channel, centering on -90 (left) and +90 (right), as opposed to being points
68 # placed at -30 (left) and +30 (right). This can be useful for surround-sound
69 # to give stereo sources a more encompassing sound. Note that the sound's
70 # overall volume will be slightly reduced to account for the extra output.
74 # Sets the output frequency.
78 # Selects the resampler used when mixing sources. Valid values are:
79 # point - nearest sample, no interpolation
80 # linear - extrapolates samples using a linear slope between samples
81 # cubic - extrapolates samples using a Catmull-Rom spline
82 # Specifying other values will result in using the default (linear).
86 # Sets real-time priority for the mixing thread. Not all drivers may use this
87 # (eg. PortAudio) as they already control the priority of the mixing thread.
88 # 0 and negative values will disable it. Note that this may constitute a
89 # security risk since a real-time priority thread can indefinitely block
90 # normal-priority threads if it fails to wait. As such, the default is
95 # Sets the update period size, in frames. This is the number of frames needed
96 # for each mixing update. Acceptable values range between 64 and 8192.
100 # Sets the number of update periods. Higher values create a larger mix ahead,
101 # which helps protect against skips when the CPU is under load, but increases
102 # the delay between a sound getting mixed and being heard. Acceptable values
103 # range between 2 and 16.
107 # Sets the maximum number of allocatable sources. Lower values may help for
108 # systems with apps that try to play more sounds than the CPU can handle.
112 # Sets the backend driver list order, comma-seperated. Unknown backends and
113 # duplicated names are ignored. Unlisted backends won't be considered for use
114 # unless the list is ended with a comma (eg. 'oss,' will list OSS first
115 # followed by all other available backends, while 'oss' will list OSS only).
116 # Backends prepended with - won't be available for use (eg. '-oss,' will allow
117 # all available backends except OSS). An empty list means the default.
118 #drivers = pulse,alsa,core,oss,solaris,sndio,mmdevapi,dsound,winmm,port,opensl,null,wave
121 # Sets which effects to exclude, preventing apps from using them. This can
122 # help for apps that try to use effects which are too CPU intensive for the
123 # system to handle. Available effects are: eaxreverb,reverb,echo,modulator,
128 # Sets the maximum number of Auxiliary Effect Slots an app can create. A slot
129 # can use a non-negligible amount of CPU time if an effect is set on it even
130 # if no sources are feeding it, so this may help when apps use more than the
135 # Sets the number of auxiliary sends per source. When not specified (default),
136 # it allows the app to request how many it wants. The maximum value currently
141 # Sets the virtual speaker layout. Values are specified in degrees, where 0 is
142 # straight in front, negative goes left, and positive goes right. Unspecified
143 # speakers will remain at their default positions (which are dependant on the
144 # output format). Available speakers are back-left(bl), side-left(sl), front-
145 # left(fl), front-center(fc), front-right(fr), side-right(sr), back-right(br),
146 # and back-center(bc).
150 # Channel-specific layouts may be specified to override the layout option. The
151 # same speakers as the layout option are available, and the default settings
153 #layout_stereo = fl=-90, fr=90
154 #layout_quad = fl=-45, fr=45, bl=-135, br=135
155 #layout_surround51 = fl=-30, fr=30, fc=0, bl=-110, br=110
156 #layout_surround61 = fl=-30, fr=30, fc=0, sl=-90, sr=90, bc=180
157 #layout_surround71 = fl=-30, fr=30, fc=0, sl=-90, sr=90, bl=-150, br=150
160 # A reverb preset that applies by default to all sources on send 0
161 # (applications that set their own slots on send 0 will override this).
162 # Available presets are: None, Generic, PaddedCell, Room, Bathroom,
163 # Livingroom, Stoneroom, Auditorium, ConcertHall, Cave, Arena, Hangar,
164 # CarpetedHallway, Hallway, StoneCorridor, Alley, Forest, City, Moutains,
165 # Quarry, Plain, ParkingLot, SewerPipe, Underwater, Drugged, Dizzy, Psychotic.
169 # Generates a SIGTRAP signal when an ALC device error is generated, on systems
170 # that support it. This helps when debugging, while trying to find the cause
171 # of a device error. On Windows, a breakpoint exception is generated.
172 #trap-alc-error = false
175 # Generates a SIGTRAP signal when an AL context error is generated, on systems
176 # that support it. This helps when debugging, while trying to find the cause
177 # of a context error. On Windows, a breakpoint exception is generated.
178 #trap-al-error = false
181 ## Reverb effect stuff (includes EAX reverb)
186 # A global amplification for reverb output, expressed in decibels. The value
187 # is logarithmic, so +6 will be a scale of (approximately) 2x, +12 will be a
188 # scale of 4x, etc. Similarly, -6 will be about half, and -12 about 1/4th. A
189 # value of 0 means no change.
193 # Allows the standard reverb effect to be used in place of EAX reverb. EAX
194 # reverb processing is a bit more CPU intensive than standard, so this option
195 # allows a simpler effect to be used at the loss of some quality.
199 ## ALSA backend stuff
204 # Sets the device name for the default playback device.
208 # Sets the prefix used by the discovered (non-default) playback devices. This
209 # will be appended with "CARD=c,DEV=d", where c is the card id and d is the
210 # device index for the requested device name.
211 #device-prefix = plughw:
214 # Card- and device-specific prefixes may be used to override the device-prefix
215 # option. The option may specify the card id (eg, device-prefix-NVidia), or
216 # the card id and device index (eg, device-prefix-NVidia-0). The card id is
221 # Sets the device name for the default capture device.
225 # Sets the prefix used by the discovered (non-default) capture devices. This
226 # will be appended with "CARD=c,DEV=d", where c is the card id and d is the
227 # device number for the requested device name.
228 #capture-prefix = plughw:
231 # Card- and device-specific prefixes may be used to override the
232 # capture-prefix option. The option may specify the card id (eg,
233 # capture-prefix-NVidia), or the card id and device index (eg,
234 # capture-prefix-NVidia-0). The card id is case-sensitive.
238 # Sets whether to try using mmap mode (helps reduce latencies and CPU
239 # consumption). If mmap isn't available, it will automatically fall back to
240 # non-mmap mode. True, yes, on, and non-0 values will attempt to use mmap. 0
241 # and anything else will force mmap off.
250 # Sets the device name for OSS output.
254 # Sets the device name for OSS capture.
258 ## Solaris backend stuff
263 # Sets the device name for Solaris output.
267 ## MMDevApi backend stuff
272 ## DirectSound backend stuff
277 ## Windows Multimedia backend stuff
282 ## PortAudio backend stuff
287 # Sets the device index for output. Negative values will use the default as
288 # given by PortAudio itself.
292 # Sets the device index for capture. Negative values will use the default as
293 # given by PortAudio itself.
297 ## PulseAudio backend stuff
302 # Attempts to spawn a PulseAudio server when requesting to open a PulseAudio
303 # device. Setting autospawn to false in PulseAudio's client.conf will still
304 # prevent autospawning even if this is set to true.
308 # Allows PulseAudio to move active streams to different devices. Note that the
309 # device specifier seen by applications will not be updated when this occurs,
310 # and neither will the AL device configuration (sample rate, format, etc).
314 ## Wave File Writer stuff
319 # Sets the filename of the wave file to write to. An empty name prevents the
320 # backend from opening, even when explicitly requested.
321 # THIS WILL OVERWRITE EXISTING FILES WITHOUT QUESTION!