1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
.. SPDX-FileCopyrightText: 2017 Ole Martin Bjorndalen <ombdalen@gmail.com>
..
.. SPDX-License-Identifier: CC-BY-4.0
PortMidi
--------
Name: ``mido.backends.portmidi``
Resources:
* `PortMidi C Library <https://github.com/PortMidi/portmidi>`_
Installing
^^^^^^^^^^
The PortMidi backend requires the ``portmidi`` shared library.
`Ubuntu <https://www.ubuntu.com/>`_::
apt install libportmidi-dev
`Homebrew <https://mxcl.dev/homebrew/>`_::
brew install portmidi
`MacPorts <https://www.macports.org/>`_::
port install portmidi
The backend will look for::
portmidi.so (Linux)
portmidi.dynlib (macOS)
portmidi.dll (Windows)
Features
^^^^^^^^
* Can send but doesn't receive ``active_sensing`` messages.
* No callback mechanism so callbacks are implemented in
Python with threads. Each port with a callback has a dedicated thread
doing blocking reads from the device.
* Due to limitations in PortMidi the port list will not be up-to-date if
there are any ports open. (The refresh is implemented by
re-initializing PortMidi which would break any open ports.)
|
