Webcam testing notes

I tidied up the test web cam function, ran it, but still got the same error message of unsupported format.


*** Start Program - FongToy v1.7 tlfong01 2013jun10 ***

*** Sample run begin - Test web cam 2013jun11hkt11:15 ***

List of available cameras =  ['/dev/video0']
Traceback (most recent call last):
  File "fongtoy.py", line 77, in <module>
    ftwebcam.TestWebcam()
  File "/home/pi/fongtoy/ftwebcam.py", line 46, in TestWebcam
    webCam.start()
SystemError: ioctl(VIDIOC_S_FMT) failure: no supported formats

# ftwebcam v0.2 tlfong01 2013jun11

# *****************************************************************************

# Module - ftwebcam.py

# Description - Test Logitech webcam C920 and C270 

# Reference

#   Pygame.camera Reference - http://www.pygame.org/docs/ref/camera.html

#   Pygame.camera Turorial -  http://www.pygame.org/docs/tut/camera/CameraIntro.html

# Notes

#   Image zise 2MP 16:9 = 1920 * 1080 = 2,073,600

# *****************************************************************************

# *****************************************************************************

# Imports

# *****************************************************************************

import time

import pygame

import pygame.camera

from pygame.locals import *

import ftprint

# *****************************************************************************

# Function - TestWebcam()

# Description - 

#   Test Webcam 

# *****************************************************************************

def TestWebcam():

    ftprint.PrintDoubleSpaceLine("*** Sample run begin - Test web cam 2013jun11hkt11:15 ***")    

    

    webCamWidth  = 640

    webCamHeight = 480

    pygame.init()

    pygame.camera.init()

    webCamList = pygame.camera.list_cameras()

    if webCamList:

        print "List of available cameras = ", webCamList

        webCam = pygame.camera.Camera(webCamList[0],(webCamWidth, webCamHeight))

    webCam.start()

    image = webCam.get_image()

    webcam.stop()

    pygame.quit()

    ftprint.PrintDoubleSpaceLine("*** Sample run end ***")

    sys.exit()

# .END