Re: [pygame] pygame parachut/coredump on pygame image load.

["Jake b" <ninmonkeys@xxxxxxxxx>]

On Dec 13, 2007 8:26 AM, Lionel Barret De Nazaris <lionel.bdn@xxxxxxx> wrote:
> Hi all,
>
> I am trying to join BMPs into one nice mpg and pygame do the parachute
> thing to me.

Does it give a name of an Exception / line number when it crashes?

> It's quite puzzling because the first image is processed, but it crashes
> just after that...

If time.time() returns time in seconds you might get a division by
zero. You can use pygame's: pygame.time.get_ticks() to get the time in
milliseconds. ( http://www.pygame.org/docs/ref/time.html )

Try adding error checking to your image loading code. An example:

#!/usr/bin/python
# code from: http://www.learningpython.com/2006/03/12/creating-a-game-in-python-using-pygame-part-one/

import os, sys
import pygame
from pygame.locals import *

def load_image(name, colorkey=None):
    """Load an image, with error checking. Loads whole image to surface.

    Images are in the path: /data/images/'name'
    if colorkey is -1, then uses pixel at (0,0) for transparency.
    """
    fullname = os.path.join('data', 'images')
    fullname = os.path.join(fullname, name)
    try:
        image = pygame.image.load(fullname)
    except pygame.error, message:
        print 'Cannot load image:', fullname
        print "\terror: ", pygame.get_error()
        raise SystemExit, message
    image = image.convert()
    if colorkey is not None:
        if colorkey is -1:
            colorkey = image.get_at((0,0))
        image.set_colorkey(colorkey, RLEACCEL)
    return image, image.get_rect()



>
> Any idea ? The images are over 4000 but I don't see how that could
> affect this code or cause this core dump...
>
> Lionel
> ----
>
> #! /bin/env python
> import sys, os, time
> import pygame
> import pymedia.video.vcodec as vcodec
> import glob
> from pprint import pprint
>
> def getEncoder(outCodec, height, width):
>    if outCodec== 'mpeg1video':
>        bitrate= 2700000
>    else :
>        bitrate= 9800000
>    #==
>    params= { \
>      'type': 0,
>      'gop_size': 12,
>      'frame_rate_base': 125,
>      'max_b_frames': 0,
>      'height': height,
>      'width': width,
>      'frame_rate': 2997,
>      'deinterlace': 0,
>      'bitrate': bitrate,
>      'id': vcodec.getCodecID( outCodec )
>    }
>    return vcodec.Encoder( params )
>
> def fileList(patterns):
>    return glob.glob(patterns)
>
> def add_one_frame(img, encoder, file_dest):
>    s = pygame.image.load(img)
>    ss = pygame.image.tostring(s, "RGB")
>    bmpFrame = vcodec.VFrame( vcodec.formats.PIX_FMT_RGB24,
> s.get_size(), (ss,None,None))
>    yuvFrame = bmpFrame.convert( vcodec.formats.PIX_FMT_YUV420P )
>    d = encoder.encode( yuvFrame )
>    file_dest.write( d.data )
>
> def joinFrames(file_list, encoder, file_dest):
>    start_time= time.time()
>    for img in file_list:
>        add_one_frame(img, encoder, file_dest)
>    nb = len(file_list)
>    time_elapsed = time.time() - start_time
>    print '%d frames written in %.2f secs( %.2f fps )' % ( nb,
> time_elapsed, float( nb )/ time_elapsed )
>    return file_dest
>
> def get_size_info(img_path):
>    s = pygame.image.load( img_path )
>    return s.get_height(), s.get_width()
>
> if __name__== '__main__':
>    pass
>    pygame.init()
>    fl = fileList("../../*.bmp")
>    assert fl, "filelist ok"
>    h, w = get_size_info(fl[0])
>    print "size ok"
>    e = getEncoder("mpeg2video", h, w)
>    print "encoder ok"
>    file = open("movie3.mpg", "wb")
>    joinFrames(fl, e, file)
>    file.close()
>    pygame.quit()
>



-- 
Jake