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Add midi-db. Ignore-this: c6f4fc32efa4453ddbdc478793eedd52 A basic implementation for working with MIDI files stored in the database. It is a test case for `versioned' data, but only partially implemented at the moment. darcs-hash:20100223152703-16a00-4388d2720907d777a1c6c6b3a010885ce0fe06a7.gz
author j.forth <j.forth@gold.ac.uk>
date Tue, 23 Feb 2010 15:27:03 +0000
parents f5734df598f4
children
line wrap: on
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(cl:in-package #:amuse-meredith)

(defun make-meredith-composition-identifier (composition-id)
  (make-instance 'meredith-composition-identifier
		 :composition-id composition-id))

(defun make-meredith-composition (&key events time interval
				  identifier description)
  (make-instance 'meredith-composition
		 :%data events
		 :time time
		 :interval interval
		 :identifier identifier
		 :description description))

(defun make-meredith-event (&rest args)
  (apply #'make-instance 'meredith-event args))

(defun db-event->meredith-event (db-event composition)
  (destructuring-bind (event-id tatum-on tatum-dur tactus-on
				tactus-dur crot-on crot-dur
				tatum-on-ms tatum-dur-ms beat-on-ms
				beat-dur-ms crot-on-ms crot-dur-ms
				pitch-name midi-note-number cpitch
				mpitch voice) db-event
    (make-meredith-event :identifier event-id
			 :composition composition
			 :tatum-on tatum-on
			 :tatum-dur tatum-dur
			 :tactus-on tactus-on
			 :tactus-dur tactus-dur
			 :time crot-on	; define crotchet as standard time
			 :interval crot-dur
			 :tatum-on-ms tatum-on-ms
			 :tatum-dur-ms tatum-dur-ms
			 :beat-on-ms beat-on-ms
			 :beat-dur-ms beat-dur-ms
			 :crot-on-ms crot-on-ms
			 :crot-dur-ms crot-dur-ms
			 :pitch-name pitch-name
			 :number midi-note-number
			 :cp cpitch
			 :mp mpitch
			 :voice voice)))