mlaga97
/
PySimpleGUI
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Update to the latest coding guidelines. Use PPM encoding as it's been shown to be more efficient

This commit is contained in:
PySimpleGUI 2022-06-01 15:44:19 -04:00
parent 051fa57d15
commit 11319709e1
1 changed files with 24 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
DemoPrograms/Demo_OpenCV.py
View File

@ -1,16 +1,18 @@
#!/usr/bin/env python
import PySimpleGUI as sg
from PIL import Image
import cv2 as cv
import io
# from PIL import Image
# import io
"""
Demo program to open and play a file using OpenCV
It's main purpose is to show you:
1. How to get a frame at a time from a video file using OpenCV
2. How to display an image in a PySimpleGUI Window
Demo program to open and play a file using OpenCV
It's main purpose is to show you:
1. How to get a frame at a time from a video file using OpenCV
2. How to display an image in a PySimpleGUI Window
For added fun, you can reposition the video using the slider.
For added fun, you can reposition the video using the slider.
Copyright 2022 PySimpleGUI
"""
@ -28,37 +30,39 @@ def main():
# ---===--- define the window layout --- #
layout = [[sg.Text('OpenCV Demo', size=(15, 1), font='Helvetica 20')],
[sg.Image(filename='', key='-image-')],
[sg.Slider(range=(0, num_frames),
size=(60, 10), orientation='h', key='-slider-')],
[sg.Button('Exit', size=(7, 1), pad=((600, 0), 3), font='Helvetica 14')]]
[sg.Image(key='-IMAGE-')],
[sg.Slider(range=(0, num_frames), size=(60, 10), orientation='h', key='-SLIDER-')],
[sg.Push(), sg.Button('Exit', font='Helvetica 14')]]
# create the window and show it without the plot
window = sg.Window('Demo Application - OpenCV Integration', layout, no_titlebar=False, location=(0, 0))
# locate the elements we'll be updating. Does the search only 1 time
image_elem = window['-image-']
slider_elem = window['-slider-']
image_elem = window['-IMAGE-']
slider_elem = window['-SLIDER-']
timeout = 1000//fps # time in ms to use for window reads
# ---===--- LOOP through video file by frame --- #
cur_frame = 0
while vidFile.isOpened():
event, values = window.read(timeout=0)
event, values = window.read(timeout=timeout)
if event in ('Exit', None):
break
ret, frame = vidFile.read()
if not ret: # if out of data stop looping
break
# if someone moved the slider manually, the jump to that frame
if int(values['-slider-']) != cur_frame-1:
cur_frame = int(values['-slider-'])
if int(values['-SLIDER-']) != cur_frame-1:
cur_frame = int(values['-SLIDER-'])
vidFile.set(cv.CAP_PROP_POS_FRAMES, cur_frame)
slider_elem.update(cur_frame)
cur_frame += 1
imgbytes = cv.imencode('.png', frame)[1].tobytes() # ditto
imgbytes = cv.imencode('.ppm', frame)[1].tobytes() # can also use png. ppm found to be more efficient
image_elem.update(data=imgbytes)
main()
#############
# | | #
# | | #
@ -75,5 +79,3 @@ def main():
imgbytes = bio.getvalue() # this can be used by OpenCV hopefully
image_elem.update(data=imgbytes)
"""
main()