package/python-midiutil: new package

A pure python library for creating multi-track MIDI files.

https://github.com/MarkCWirt/MIDIUtil

Signed-off-by: Julien Olivain <ju.o@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

support/testing/tests/package/sample_python_midiutil.py

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+#! /usr/bin/env python3
+
+# Taken from:
+# https://github.com/MarkCWirt/MIDIUtil/blob/1.2.1/examples/c-major-scale.py
+
+from midiutil import MIDIFile
+
+degrees = [60, 62, 64, 65, 67, 69, 71, 72]  # MIDI note number
+track = 0
+channel = 0
+time = 0        # In beats
+duration = 1    # In beats
+tempo = 60      # In BPM
+volume = 100    # 0-127, as per the MIDI standard
+
+MyMIDI = MIDIFile(1)  # One track
+MyMIDI.addTempo(track, time, tempo)
+
+for i, pitch in enumerate(degrees):
+    MyMIDI.addNote(track, channel, pitch, time + i, duration, volume)
+
+with open("major-scale.mid", "wb") as output_file:
+    MyMIDI.writeFile(output_file)

support/testing/tests/package/test_python_midiutil.py

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+from tests.package.test_python import TestPythonPackageBase
+
+
+class TestPythonPy3MidiUtil(TestPythonPackageBase):
+    __test__ = True
+    config = TestPythonPackageBase.config + \
+        """
+        BR2_PACKAGE_PYTHON3=y
+        BR2_PACKAGE_PYTHON_MIDIUTIL=y
+        """
+    sample_scripts = ["tests/package/sample_python_midiutil.py"]