60 lines
2.1 KiB
Python
60 lines
2.1 KiB
Python
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# Copyright 2016 Google Inc. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Testing support code."""
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# internal imports
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from magenta.music import sequences_lib
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from magenta.protobuf import music_pb2
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# Shortcut to CHORD_SYMBOL annotation type.
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CHORD_SYMBOL = music_pb2.NoteSequence.TextAnnotation.CHORD_SYMBOL
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def add_track(note_sequence, instrument, notes):
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for pitch, velocity, start_time, end_time in notes:
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note = note_sequence.notes.add()
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note.pitch = pitch
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note.velocity = velocity
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note.start_time = start_time
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note.end_time = end_time
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note.instrument = instrument
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def add_chords(note_sequence, chords):
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for figure, time in chords:
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annotation = note_sequence.text_annotations.add()
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annotation.time = time
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annotation.text = figure
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annotation.annotation_type = CHORD_SYMBOL
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def add_quantized_track(quantized_sequence, instrument, notes):
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if instrument not in quantized_sequence.tracks:
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quantized_sequence.tracks[instrument] = []
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track = quantized_sequence.tracks[instrument]
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for pitch, velocity, start_step, end_step in notes:
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note = sequences_lib.Note(pitch=pitch,
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velocity=velocity,
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start=start_step,
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end=end_step,
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instrument=instrument,
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program=0)
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track.append(note)
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def add_quantized_chords(quantized_sequence, chords):
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for figure, step in chords:
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chord = sequences_lib.ChordSymbol(step=step, figure=figure)
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quantized_sequence.chords.append(chord)
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