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convert.py
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convert.py
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# The MIT License (MIT)
# Copyright (c) 2015 Joel Robichaud
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
import sys
import transcribe
from music21 import environment, stream, metadata
class AudioToSheetMusicConverter:
"""Convert audio files to sheet music."""
def __init__(self):
"""Constructor."""
if sys.platform == "darwin":
import os
LILYPOND_EXEC_PATH = "/Applications/LilyPond.app/Contents/Resources/bin/lilypond"
if os.path.exists(LILYPOND_EXEC_PATH):
environment.set("lilypondPath", LILYPOND_EXEC_PATH)
def convert(self, filenames, destination):
"""Convert wav files into pdf using lilypond as renderer."""
max_progress = len(filenames) + 2
progress = 0
parts = []
for filename in filenames:
parts.append(transcribe.monophonicStreamFromFile(filename))
progress += 1
yield int(float(progress) / float(max_progress) * 100)
score = stream.Score()
score.metadata = metadata.Metadata()
score.metadata.composer = "Polyscribe"
for part in parts:
score.append(part)
progress += 1
yield int(float(progress) / float(max_progress) * 100)
score.write("lily.pdf", destination)
progress += 1
yield int(float(progress) / float(max_progress) * 100)