Added scale editor

yarns/scale_editor/README

@@ -0,0 +1 @@
+AppEngine web app for converting a scala .scl file into a tuning .syx recognized by Yarns.

yarns/scale_editor/app.yaml

@@ -0,0 +1,19 @@
+application: scale-editor
+version: 1
+runtime: python27
+api_version: 1
+threadsafe: true
+
+handlers:
+- url: /static
+  static_dir: static
+
+- url: /favicon.ico
+  static_files: static/favicon.ico
+  upload: static/favicon.ico
+
+- url: .*
+  script: main.application
+
+- url: /syx
+  script: main.application

yarns/scale_editor/index.yaml

@@ -0,0 +1,11 @@
+indexes:
+
+# AUTOGENERATED
+
+# This index.yaml is automatically updated whenever the dev_appserver
+# detects that a new type of query is run.  If you want to manage the
+# index.yaml file manually, remove the above marker line (the line
+# saying "# AUTOGENERATED").  If you want to manage some indexes
+# manually, move them above the marker line.  The index.yaml file is
+# automatically uploaded to the admin console when you next deploy
+# your application using appcfg.py.

yarns/scale_editor/main.py

@@ -0,0 +1,89 @@
+#!/usr/bin/env python
+#
+# Copyright 2007 Google Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os
+
+import webapp2
+
+from google.appengine.ext import webapp
+from google.appengine.ext.webapp import util
+from google.appengine.ext.webapp import template
+
+from music.scala import scala
+
+TEMPLATE_PATH = os.path.join(os.path.dirname(__file__), 'templates')
+
+
+
+class SyxHandler(webapp.RequestHandler):
+  def get(self):
+    header = '\xf0\x7f\x7f\x08\x09\x03\x7f\x7f'
+    data = self.request.get('data')
+    body = ''.join([chr(int(data[x:x+2], 16)) for x in range(0, len(data), 2)])
+    footer = '\xf7'
+    self.response.headers['Content-Type'] = 'application/octet-stream'
+    self.response.headers['Content-disposition'] = \
+        'attachment; filename=scale.syx'
+    self.response.out.write(header + body + footer)
+
+
+
+class MainHandler(webapp.RequestHandler):
+  def post(self):
+    return self.get()
+
+  def get(self):
+    if self.request.get('scl'):
+      source = self.request.get('scl').decode('iso-8859-1').encode('utf8')
+      hide_if_error = True
+    else:
+      source = self.request.get('source')
+      hide_if_error = False
+
+    semitones = []
+    try:
+      error_message = ''
+      notes = scala.parse(source)
+      mapping = scala.assign_to_octave(notes)
+      names = ['C', 'C#', 'D', 'D#', 'E', 'F', 'F#', 'G', 'G#', 'A', 'A#', 'B']
+      mappings = []
+      for i, (shift, note) in enumerate(zip(mapping, names)):
+        mappings.append(
+          '%s = %.2f cents' % (note, shift + i * 100.0))
+      mapping_14bit = [int(round(8192 + 8192 * x / 100.0)) for x in mapping]
+      mapping_hex = ['%02x%02x' % (m >> 7, m & 0x7f) for m in mapping_14bit]
+      link = ''.join(mapping_hex)
+
+    except scala.ParseError as p:
+      error_message = p.message
+      notes = []
+      mappings = []
+      link = ''
+
+    if not source:
+      error_message = ''
+
+    self.response.headers['Content-Type'] = 'text/html'
+    template_path = os.path.join(TEMPLATE_PATH, 'index.html')
+    template_data = {}
+    template_data['error_message'] = error_message
+    template_data['notes'] = notes
+    template_data['mappings'] = mappings
+    template_data['link'] = link
+    template_data['source'] = '' if hide_if_error and error_message else source
+    self.response.out.write(template.render(template_path, template_data))
+
+application = webapp.WSGIApplication([('/', MainHandler), ('/syx', SyxHandler)])

yarns/scale_editor/music/scala/scala.py

@@ -0,0 +1,114 @@
+#!/usr/bin/python2.5
+#
+# Copyright 2009 Olivier Gillet.
+#
+# Author: Olivier Gillet ([email protected])
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+# -----------------------------------------------------------------------------
+#
+# Scala reader.
+
+"""Scala reader."""
+
+import math
+import re
+
+
+
+class ParseError(Exception):
+
+  def __init__(self, message):
+    self.message = message
+
+  def __str__(self):
+    return self.message
+
+
+
+def _parse_note(x):
+  x = re.split('[ !]+', x.strip())[0]
+  x = x.replace(',', '')  # Some files use , as a decimal separator in fractions
+  if '.' in x:
+    return float(x)
+  elif '/' in x:
+    tokens = x.split('/')
+    return 1200.0 * math.log(float(tokens[0]) / float(tokens[1])) / math.log(2)
+  else:
+    return 1200.0 * math.log(float(x)) / math.log(2)
+
+
+
+def parse(lines):
+  lines = lines.split('\n')
+  lines = [line.strip('\r ') for line in lines]
+  lines = [line for line in lines if not line.startswith('!') and line]
+  if not lines:
+    raise ParseError('Empty file')
+
+  comment = lines[0]
+  lines = lines[1:]
+
+  if not lines:
+    raise ParseError('Invalid number of notes')
+
+  try:
+    num_notes = int(lines[0])
+  except Exception as e:
+    raise ParseError('Incorrect number of notes: %s' % lines[0])
+
+  lines = lines[1:]
+
+  if len(lines) != num_notes:
+    raise ParseError('Declared number of notes (%d) does not match number of lines (%d)' % (num_notes, len(lines)))
+
+  items = []
+  for line in lines:
+    try:
+      items.append(_parse_note(line))
+    except Exception as e:
+      raise ParseError('Cannot parse: %s' % line)
+
+  return items
+
+
+
+def assign_to_octave(notes):
+  adjustments = [0.0] * 12
+  allocated = [False] * 12
+  for n in [0.0] + notes:
+    index = int(round(n / 100.0))
+    shift = None
+    for candidate_shift in [0, -1, 1, -2, 2, -3, 3, -4, 4]:
+      position = index + candidate_shift
+      adjustment = n - position * 100.0
+      if all([
+          position >= 0,
+          position < 12,
+          adjustment <= 16383/16384.0 * 100.0,
+          adjustment >= -100.0,
+          not allocated[position % 12]]):
+        shift = candidate_shift
+        break
+
+    if shift != None:
+      position = index + shift
+      adjustments[position] = n - position * 100.0
+      allocated[position] = True
+
+  return adjustments
+
+
+
+if __name__ == '__main__':
+  pass

yarns/scale_editor/static/main.css

@@ -0,0 +1,76 @@
+html, body, div, span, applet, object, iframe, 
+h1, h2, h3, h4, h5, h6, p, blockquote, pre, 
+a, abbr, acronym, address, big, cite, code, 
+del, dfn, em, font, img, ins, kbd, q, s, samp, 
+small, strike, strong, sub, sup, tt, var, 
+b, u, i, center, 
+dl, dt, dd, ol, ul, li, 
+fieldset, form, label, legend, 
+table, caption, tbody, tfoot, thead, tr, th, td { background: transparent; border: 0; margin: 0; padding: 0; vertical-align: baseline; } 
+
+body {
+  font-family: Helvetica, Arial, sans-serif;
+  font-size: 0.9em;
+  background: url("bg_main.jpg") top left;
+  margin: 0;
+}
+
+h1, h2, h3, h4, h5, h6 { clear: both; font-weight: normal; } 
+h1 { margin: 10px 90px 20px 90px; padding-left: 50px; font-size: 36px; font-weight: 100; background: url("db_yarns.png") left 0 no-repeat; } 
+h2 { margin: 20px 90px 20px 90px; font-size: 24px; color: #b31748; font-weight: 100; } 
+h3 { margin: 20px 90px 10px 90px; font-size: 18px; font-weight: 100; } 
+#content p, #content ul, #content ol, #content pre { margin: 0 90px 10px 90px; line-height: 150%; } 
+
+a { color: #1a7877; font-weight: bold; } 
+a:hover { color: #b31748; } 
+
+
+#wrapper {
+  width: 100%;
+  margin-left: 20px;
+  padding: 0;
+  width: 960px;
+} 
+
+#content {
+  width: 720px;
+  box-shadow: 0 0 20px #706c64;
+  background-color: #fff;
+  float: right;
+  margin: 0;
+  min-height:100%;
+} 
+
+#sidebar { width: 240px; padding: 0; float: left; margin: 0; } 
+#sidebar #logo { background: url("logo.jpg") no-repeat center; display:block; width:100%; height:177px; overflow:hidden; text-indent:-420em; padding:11px 0 30px; } 
+#credits { margin: 10px 10px; color: #998f85; font-style: oblique; } 
+.divider_big{ width: 100%; height: 60px; background: url("divider_big.jpg") repeat-x center; } 
+
+ul.mappings li {
+  padding: 8px;
+  border: 1px;
+  background-color: #b31748;
+  border-color: #b31748;
+  border-style: solid;
+  color: #fff;
+  line-height: 2;
+}
+
+ul.notes li {
+  padding: 4px;
+  border: 1px;
+  background-color: #1a7877;
+  border-color: #1a7877;
+  border-style: solid;
+  color: #fff;
+  display: inline;
+  line-height: 2.2;
+}
+
+p.error {
+  padding: 8px;
+  background-color: #b31748;
+  color: #fff;
+  font-weight: bold;
+}
+

yarns/scale_editor/templates/base.html

@@ -0,0 +1,23 @@
+<html>
+<head>
+<title>{{ title }}</title>
+<link type="text/css" rel="stylesheet" href="/static/main.css" />
+</head>
+<body {{ extra_body_tags }} >
+  <div id='wrapper'>
+    <div id='content'>
+    {% block content %}
+    {% endblock %}
+
+    <div class="divider_big"></div>
+    <div id="credits">
+      <p>Mutable Instruments, 2014. <a href="https://github.com/pichenettes/eurorack/tree/master/yarns">Source code</a>.</p>
+    </div>
+
+    </div>
+    <div id='sidebar'>
+      <a id="logo" href="http://mutable-instruments.net">Mutable Instruments</a>
+    </div>
+  </div>
+</body>
+</html>