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Article contents:== Outdated egg! This is an egg for CHICKEN 4, the unsupported old release. You're almost certainly looking for [[/eggref/5/ola|the CHICKEN 5 version of this egg]], if it exists. If it does not exist, there may be equivalent functionality provided by another egg; have a look at the [[https://wiki.call-cc.org/chicken-projects/egg-index-5.html|egg index]]. Otherwise, please consider porting this egg to the current version of CHICKEN. == ola [[toc:]] == Description Basic bindings for libola, Open Lighting Architecture. Classes covered so far are DmxBuffer and StreamingClient. For bug reports, feature requests, and development versions, visit the [[https://github.com/retroj/ola-egg/|github project page]]. == Authors * John J Foerch == Requirements === Chicken Eggs * [[r7rs]] * [[srfi-99]] * [[foreigners]] * [[list-utils]] * [[matchable]] === C Headers * ola (libola-dev) == API === Version <procedure>(ola-version) => (major minor revision)</procedure> Return ola's version as a list. <procedure>(ola-version-string) => string</procedure> Return ola's version as a string. === Logging <procedure>(init-logging [level] [output]) => bool</procedure> Level may be one of the following symbols: * log-level/none * log-level/fatal * log-level/warn * log-level/info * log-level/debug * log-level/max Output may be one of the following symbols: * log-output/stderr * log-output/syslog * log-output/null === DmxBuffer <procedure>(dmxbuffer) => dmxbuffer</procedure> Construct a new empty dmxbuffer. <procedure>(dmxbuffer other-dmxbuffer) => dmxbuffer</procedure> Construct a new dmxbuffer with the same contents as other-dmxbuffer. <procedure>(dmxbuffer bytevector) => dmxbuffer</procedure> Constructs a new dmxbuffer with the same contents as bytevector. <procedure>(dmxbuffer? dmxbuffer) => bool</procedure> Dmxbuffer predicate. <procedure>(dmxbuffer=? dmxbuffer-a dmxbuffer-b) => bool</procedure> Test whether dmxbuffer-a and dmxbuffer-b have equal contents. <procedure>(dmxbuffer-size dmxbuffer) => size</procedure> Size of dmxbuffer. <procedure>(dmxbuffer-get dmxbuffer) => bytevector</procedure> Return contents of dmxbuffer as a bytevector. <procedure>(dmxbuffer-get-channel dmxbuffer channel) => value</procedure> Return the value of the given channel in dmxbuffer. <procedure>(dmxbuffer-get-range dmxbuffer offset length) => bytevector</procedure> Return a bytevector of the requested range in dmxbuffer. <procedure>(dmxbuffer-set! dmxbuffer bytevector offset size) => bool</procedure> Set the contents of dmxbuffer to contents of bytevector at given offset and size. <procedure>(dmxbuffer-set! dmxbuffer bytevector) => bool</procedure> Set the contents of dmxbuffer to contents of bytevector. <procedure>(dmxbuffer-set! dmxbuffer dmxbuffer-other) => bool</procedure> Set the contents of dmxbuffer to contents of dmxbuffer-other. <procedure>(dmxbuffer-set-channel! dmxbuffer channel value) => undefined</procedure> Set dmxbuffer channel to value. <procedure>(dmxbuffer-set-from-string! dmxbuffer str) => bool</procedure> Complement of dmxbuffer->string. Sets the contents of dmxbuffer according to the specially formatted string str. The format of the string is integers separated by commas, where 0's may be omitted, e.g. "1,2,,255" <procedure>(dmxbuffer-set-range! dmxbuffer dst-offset bytevector) => bool</procedure> Set contents of dmxbuffer from dst-offset to contents of bytevector. <procedure>(dmxbuffer-set-range! dmxbuffer dst-offset bytevector src-offset src-length) => bool</procedure> Set contents of dmxbuffer from dst-offset to contents of bytevector, from src-offset, src-length bytes. <procedure>(dmxbuffer-set-range-to-value! dmxbuffer offset value length) => bool</procedure> Set contents of dmxbuffer from offset for length to value. <procedure>(dmxbuffer-htp-merge! dmxbuffer other-dmxbuffer) => bool</procedure> Perform an HTP merge (high value merge) with other-dmxbuffer into dmxbuffer. <procedure>(dmxbuffer-blackout! dmxbuffer) => bool</procedure> Set all channels to 0 in dmxbuffer. <procedure>(dmxbuffer-reset! dmxbuffer) => undefined</procedure> Reset dmxbuffer size to 0. <procedure>(dmxbuffer->string dmxbuffer) => string</procedure> Complement of 'dmxbuffer-set-from-string!'. Returns a human-readable string representing the contents of dmxbuffer - comma separated decimal values. === StreamingClient <procedure>(streamingclient [auto-start: bool] [server-port: port]) => streamingclient</procedure> Constructs a client and attempts to establish a connection to the ola daemon. Auto-start is whether to start olad if it is not already running, default true. Server-port is the port to use, default 9010. Signals an '(exn ola)' condition if it fails to connect to the ola daemon. <procedure>(streamingclient-stop streamingclient) => undefined</procedure> Stops a streamingclient. <procedure>(streamingclient-send-dmx streamingclient universe dmxbuffer) => bool</procedure> Sends contents of dmxbuffer to the given universe on streamingclient. == Examples <enscript> (use ola r7rs) (let ((client (streamingclient auto-start: #f))) (streamingclient-send-dmx client 0 (dmxbuffer (string->utf8 "AeIoUaEiO")))) </enscript> == License LGPL-3 == Version History * 0.1 (2016-03-12) initial release * 0.2 (2016-03-13) meta and documentation * 0.3 (2016-03-13) streamingclient-setup removed, ola-version added * 0.4 (2016-09-05) use bytevectors instead of blobs Description of your changes:

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