pygame.midi.init() Failing on Android 4.4.4 - ImportError: No module named pypm

[leomrocha]

Hi, Trying to connect my MIDI keyboard to my Android device here and I run into some problems.

TLDR:

pygame.midi.init() launches ImportError: No module named pypm on Android 4.4.4, Kivy 1.8, buildozer 0.27dev

Index

• Information
• traceback
• source code to reproduce the error
• grep for pypm on android-for-python

PLATFORM INFORMATION

• Kivy 1.8
• Buildozer 0.27dev
• Python-For-Android (version downloaded by buildozer)
• APK Compiled in Ubuntu 14.04 LTS, Linux 3.13.0-46-generic Build with lxml not working #79-Ubuntu SMP x86_64 GNU/Linux (note it works correclty under ubuntu so it's not the ubuntu pygame version)

TRACEBACK

When starting a program and launching pygame.midi.init() on android I get:

I/python  (13347):  Traceback (most recent call last):
I/python  (13347):    File "/myprojectdir/.buildozer/android/app/main.py", line 48, in <module>
I/python  (13347):    File "/myprojectdir/.buildozer/android/platform/python-for-android/build/python-install/lib/python2.7/site-packages/kivy/app.py", line 766, in run
I/python  (13347):    File "/myprojectdir/.buildozer/android/app/main.py", line 41, in build
I/python  (13347):    File "/myprojectdir/.buildozer/android/platform/python-for-android/build/python-install/lib/python2.7/site-packages/pygame/midi.py", line 71, in init
I/python  (13347):  ImportError: No module named pypm
I/python  (13347): Python for android ended.
I/AndroidRuntime(13347): VM exiting with result code 0, cleanup skipped.

Reproducing the problem

midi.kv file:

---

<Display>:
    orientation:"horizontal"
    TextInput:
        id: text_input
        text: root.display_text
        size_hint: 0.5, 1.

    BoxLayout:
        orientation:"vertical"
        size_hint: 0.5, 1.
        Label:
            text: "N# devices: %d " % root.n_devices

---

main.py file:

---

import pygame.midi
import kivy
kivy.require('1.8.0')
from kivy.app import App
from kivy.uix.boxlayout import BoxLayout
from kivy.properties import NumericProperty,  StringProperty

class Display(BoxLayout):
    n_devices = NumericProperty(0)
    display_text = StringProperty("LALA")

class MidiApp(App):

    def build(self):
        display = Display()

        pygame.midi.init()  #This is the line that breaks
        display. n_devices = pygame.midi.get_count()
        display.display_text = str(dir(pygame.midi))
        return display

if __name__ == "__main__":
    MidiApp().run()

---

GREP

Checking the source code, the results of grepping
$ grep -iR pypm *
Binary file android/platform/python-for-android/dist/miditest/python-install/lib/python2.7/site-packages/pygame/midi.pyo matches
Binary file android/platform/python-for-android/dist/miditest/python-install/lib/python2.7/site-packages/pygame/midi.pyc matches
android/platform/python-for-android/dist/miditest/python-install/lib/python2.7/site-packages/pygame/midi.py:_pypm = None
android/platform/python-for-android/dist/miditest/python-install/lib/python2.7/site-packages/pygame/midi.py: global _init, _pypm
android/platform/python-for-android/dist/miditest/python-install/lib/python2.7/site-packages/pygame/midi.py: import pygame.pypm
android/platform/python-for-android/dist/miditest/python-install/lib/python2.7/site-packages/pygame/midi.py: _pypm = pygame.pypm
android/platform/python-for-android/dist/miditest/python-install/lib/python2.7/site-packages/pygame/midi.py: _pypm.Initialize()
android/platform/python-for-android/dist/miditest/python-install/lib/python2.7/site-packages/pygame/midi.py: global _init, _pypm
android/platform/python-for-android/dist/miditest/python-install/lib/python2.7/site-packages/pygame/midi.py: _pypm.Terminate()
android/platform/python-for-android/dist/miditest/python-install/lib/python2.7/site-packages/pygame/midi.py: del _pypm
android/platform/python-for-android/dist/miditest/python-install/lib/python2.7/site-packages/pygame/midi.py: #del pygame._pypm
android/platform/python-for-android/dist/miditest/python-install/lib/python2.7/site-packages/pygame/midi.py: return _pypm.CountDevices()
android/platform/python-for-android/dist/miditest/python-install/lib/python2.7/site-packages/pygame/midi.py: return _pypm.GetDefaultInputDeviceID()
android/platform/python-for-android/dist/miditest/python-install/lib/python2.7/site-packages/pygame/midi.py: return _pypm.GetDefaultOutputDeviceID()
android/platform/python-for-android/dist/miditest/python-install/lib/python2.7/site-packages/pygame/midi.py: return _pypm.GetDeviceInfo(an_id)
android/platform/python-for-android/dist/miditest/python-install/lib/python2.7/site-packages/pygame/midi.py: self._input = _pypm.Input(device_id, buffer_size)
android/platform/python-for-android/dist/miditest/python-install/lib/python2.7/site-packages/pygame/midi.py: if r == _pypm.TRUE:
android/platform/python-for-android/dist/miditest/python-install/lib/python2.7/site-packages/pygame/midi.py: elif r == _pypm.FALSE:
android/platform/python-for-android/dist/miditest/python-install/lib/python2.7/site-packages/pygame/midi.py: self._output = _pypm.Output(device_id, latency)
android/platform/python-for-android/dist/miditest/python-install/lib/python2.7/site-packages/pygame/midi.py: return _pypm.Time()
Binary file android/platform/python-for-android/dist/miditest/private/lib/python2.7/site-packages/pygame/midi.pyo matches
Binary file android/platform/python-for-android/.git/objects/pack/pack-5e24aee07aeb8a388e2646faae0bee9d8034838e.pack matches
android/platform/python-for-android/recipes/pygame/Setup:# pypm src/pypm.c $(SDL) $(PORTMIDI) $(PORTTIME) $(DEBUG)

[victor-rene]

pygame / lib / midi.py

pygame / src / pypm.pyx

It seems pygame pypm module is not included in Py4A default build. What you can do is enable it by hand during your setup. Please refer to:
python-for-android/recipes/pygame/Setup

[tito]

More than that, pygame is going to be removed soon on Android (at least deprecated), as we are all moving to SDL2. Pygame on android is half-used, mixed with a custom SDL 1.3 (never released version). It's already cleaned and working on iOS.

Midi has never been a target for Kivy, but i guess you might try to look (or give a recipe) to compile another midi library then :)