I have been working for a few days, trying to use cv2.VideoCapture() in python-for-android. I'm using Kivy with buildozer to build apk for Android. Here is my code
from kivy.app import App
from kivy.uix.image import Image
from kivy.clock import Clock
from kivy.graphics.texture import Texture
import cv2
class KivyCamera(Image):
def __init__(self, capture, fps, **kwargs):
super(KivyCamera, self).__init__(**kwargs)
self.capture = capture
Clock.schedule_interval(self.update, 1.0 / fps)
def update(self, dt):
print 'hello'
ret, frame = self.capture.read()
print frame
if ret:
# convert it to texture
buf1 = cv2.flip(frame, 0)
buf = buf1.tostring()
image_texture = Texture.create(
size=(frame.shape[1], frame.shape[0]), colorfmt='bgr')
image_texture.blit_buffer(buf, colorfmt='bgr', bufferfmt='ubyte')
# display image from the texture
self.texture = image_texture
class CamApp(App):
def build(self):
self.capture = cv2.VideoCapture(1)
self.my_camera = KivyCamera(capture=self.capture, fps=30)
return self.my_camera
def on_stop(self):
#without this, app will not exit even if the window is closed
self.capture.release()
if __name__ == '__main__':
CamApp().run()
This code is totally running on pc and successfully displaying the video feed, but if I build this to apk file using buildozer it will get crashed as soon as application launched. Can someone help me to fix this issue?? Anyway If anyone have done this please comment..
This is the logcat from Android device:
08-14 10:05:16.807 16826-16826/? A/DEBUG: backtrace:
08-14 10:05:16.807 16826-16826/? A/DEBUG: #00 pc 00018b00 /system/lib/libc.so (strlen+71)
08-14 10:05:16.807 16826-16826/? A/DEBUG: #01 pc 00505fc9 /data/data/org.test.myapp/files/app/lib/python2.7/site-packages/cv2.so
08-14 10:05:16.807 16826-16826/? A/DEBUG: #02 pc 005069fb /data/data/org.test.myapp/files/app/lib/python2.7/site-packages/cv2.so
08-14 10:05:16.807 16826-16826/? A/DEBUG: #03 pc 00506e0d /data/data/org.test.myapp/files/app/lib/python2.7/site-packages/cv2.so
08-14 10:05:16.807 16826-16826/? A/DEBUG: #04 pc 0037a4fb /data/data/org.test.myapp/files/app/lib/python2.7/site-packages/cv2.so
08-14 10:05:16.807 16826-16826/? A/DEBUG: #05 pc 0037aa71 /data/data/org.test.myapp/files/app/lib/python2.7/site-packages/cv2.so
08-14 10:05:16.807 16826-16826/? A/DEBUG: #06 pc 0037261d /data/data/org.test.myapp/files/app/lib/python2.7/site-packages/cv2.so
08-14 10:05:16.807 16826-16826/? A/DEBUG: #07 pc 0037291b /data/data/org.test.myapp/files/app/lib/python2.7/site-packages/cv2.so
08-14 10:05:16.807 16826-16826/? A/DEBUG: #08 pc 003729ff /data/data/org.test.myapp/files/app/lib/python2.7/site-packages/cv2.so
08-14 10:05:16.807 16826-16826/? A/DEBUG: #09 pc 0015cf2b /data/data/org.test.myapp/files/app/lib/python2.7/site-packages/cv2.so
08-14 10:05:16.807 16826-16826/? A/DEBUG: #10 pc 000603c5 /data/app/org.test.myapp-1/lib/arm/libpython2.7.so (PyCFunction_Call+144)
