aiexperiments-ai-duet/server/third_party/magenta/music/testing_lib.py

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2016-11-11 18:53:51 +00:00
# Copyright 2016 Google Inc. All Rights Reserved.
#
# 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.
"""Testing support code."""
# internal imports
from magenta.music import sequences_lib
from magenta.protobuf import music_pb2
# Shortcut to CHORD_SYMBOL annotation type.
CHORD_SYMBOL = music_pb2.NoteSequence.TextAnnotation.CHORD_SYMBOL
def add_track(note_sequence, instrument, notes):
for pitch, velocity, start_time, end_time in notes:
note = note_sequence.notes.add()
note.pitch = pitch
note.velocity = velocity
note.start_time = start_time
note.end_time = end_time
note.instrument = instrument
def add_chords(note_sequence, chords):
for figure, time in chords:
annotation = note_sequence.text_annotations.add()
annotation.time = time
annotation.text = figure
annotation.annotation_type = CHORD_SYMBOL
def add_quantized_track(quantized_sequence, instrument, notes):
if instrument not in quantized_sequence.tracks:
quantized_sequence.tracks[instrument] = []
track = quantized_sequence.tracks[instrument]
for pitch, velocity, start_step, end_step in notes:
note = sequences_lib.Note(pitch=pitch,
velocity=velocity,
start=start_step,
end=end_step,
instrument=instrument,
program=0)
track.append(note)
def add_quantized_chords(quantized_sequence, chords):
for figure, step in chords:
chord = sequences_lib.ChordSymbol(step=step, figure=figure)
quantized_sequence.chords.append(chord)