khodowany
47 lines
2.3 KiB
Python
47 lines
2.3 KiB
Python
from __future__ import annotations
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from pathlib import Path
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from generator.guitar import place_guitar
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from generator.musicxml import load_musicxml
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from generator.parts import PART_TYPES, build_measure, propagated_chords, validate_source
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from generator.pitch import concert_document
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from generator.scat import add_scat
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from generator.score import make_arranged_document, reidentify, source_staff, write_json
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def practice_document(document: dict, part_type: str) -> dict:
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if part_type not in PART_TYPES:
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raise ValueError(f'unknown practice part: {part_type}')
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validate_source(document, practice=True)
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document = concert_document(document, octave_transposing=True)
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staff = source_staff(document)
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previous = propagated_chords(staff['measures'])
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role = {'acoustic': 'accompaniment', 'electric': 'melody', 'vocal': 'vocal'}[part_type]
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measures = [build_measure(m, f'measure-{i + 1}', role, part_type, previous[i], m.get('section_label', '')) for i, m in enumerate(staff['measures'])]
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for measure in measures:
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for chord in measure['harmonies']:
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chord.pop('chord_optional', None)
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tuplets = reidentify(measures, staff.get('tuplets', []))
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result = make_arranged_document(document, staff, staff_id='staff-practice-' + part_type, staff_name=part_type.capitalize(), role='vocal' if part_type == 'vocal' else 'guitar', arrangement_part_type=part_type, measures=measures, tuplets=tuplets, octave_shifts=staff.get('octave_shifts', []) if role in ('melody', 'vocal') else [])
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if part_type == 'vocal':
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add_scat(result)
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else:
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place_guitar(result)
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return result
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def generate_practice_scores(source_dir: Path, output_dir: Path) -> int:
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if not source_dir.is_dir():
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raise ValueError(f'practice source directory not found: {source_dir}')
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sources = sorted(source_dir.rglob('*.xml'))
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for path in sources:
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if path.parent != source_dir or len(path.stem) != 3 or not path.stem.isascii() or not path.stem.isdecimal():
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raise ValueError(f'{path}: practice sources require a three-digit filename directly under data/practice')
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for path in sources:
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document = load_musicxml(path)
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for part in PART_TYPES:
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try:
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write_json(output_dir / path.stem / (part + '.json'), practice_document(document, part))
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except ValueError as error:
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raise ValueError(f'{path}, part {part}: {error}') from error
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return len(sources) * len(PART_TYPES)
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