213 lines
6.3 KiB
Python
213 lines
6.3 KiB
Python
#!/usr/bin/python3
|
|
|
|
import os
|
|
import sys
|
|
import glob
|
|
import math
|
|
import shutil
|
|
import errno
|
|
from lxml import etree
|
|
from xml.sax.saxutils import escape as xmlescape
|
|
import cssutils
|
|
import logging
|
|
import subprocess
|
|
from urllib.request import urlopen
|
|
|
|
# Frames per second. Increasing this renders more frames, the avconf-statements would still need modifications
|
|
fps = 25
|
|
debug = False
|
|
|
|
cssutils.ser.prefs.lineSeparator = ' '
|
|
cssutils.log.setLevel(logging.FATAL)
|
|
|
|
def loadProject(projectname):
|
|
sys.path.append(os.path.join(os.path.dirname(os.path.abspath(__file__)), projectname))
|
|
return __import__(projectname)
|
|
|
|
# t: current time, b: begInnIng value, c: change In value, d: duration
|
|
# copied from jqueryui
|
|
def easeOutCubic(t, b, c, d):
|
|
t=float(t)/d-1
|
|
return c*((t)*t*t + 1) + b
|
|
|
|
def easeInCubic(t, b, c, d):
|
|
t=float(t)/d
|
|
return c*(t)*t*t + b;
|
|
|
|
def easeInQuad(t, b, c, d):
|
|
t=float(t)/d
|
|
return c*t*t + b;
|
|
|
|
def easeOutQuad(t, b, c, d):
|
|
t=float(t)/d
|
|
return -c *(t)*(t-2) + b;
|
|
|
|
def easeInOutQuad(t, b, c, d):
|
|
t=float(t)/(d/2)
|
|
if (t < 1):
|
|
return c/2*t*t + b;
|
|
t=t-1
|
|
return -c/2 * (t*(t-2) - 1) + b;
|
|
|
|
def easeLinear(t, b, c, d):
|
|
t=float(t)/d
|
|
return t*c+b
|
|
|
|
class Rendertask:
|
|
def __init__(self, infile, sequence, parameters={}, outfile=None, workdir='.'):
|
|
self.infile = infile
|
|
self.sequence = sequence
|
|
self.parameters = parameters
|
|
self.outfile = outfile
|
|
self.workdir = workdir
|
|
|
|
def fromtupel(tuple):
|
|
return Rendertask(tuple[0], tuple[2], tuple[3], tuple[1])
|
|
|
|
def ensure(input):
|
|
if isinstance(input, tuple):
|
|
return Rendertask.fromtupel(input)
|
|
elif isinstance(input, Rendertask):
|
|
return input
|
|
else:
|
|
return None
|
|
|
|
# try to create all folders needed and skip, they already exist
|
|
def ensurePathExists(path):
|
|
try:
|
|
os.makedirs(path)
|
|
except OSError as exception:
|
|
if exception.errno != errno.EEXIST:
|
|
raise
|
|
|
|
# remove the files matched by the pattern
|
|
def ensureFilesRemoved(pattern):
|
|
for f in glob.glob(pattern):
|
|
os.unlink(f)
|
|
|
|
def rendertask(task):
|
|
# in debug mode we have no thread-worker which prints its progress
|
|
if debug:
|
|
print("generating {0} from {1}".format(task.outfile, task.infile))
|
|
|
|
# make sure a .frames-directory exists in out workdir
|
|
ensurePathExists(os.path.join(task.workdir, '.frames'))
|
|
|
|
# open and parse the input file
|
|
with open(os.path.join(task.workdir, task.infile), 'r') as fp:
|
|
svgstr = fp.read()
|
|
for key in task.parameters.keys():
|
|
svgstr = svgstr.replace(key, xmlescape(str(task.parameters[key])))
|
|
|
|
svg = etree.fromstring(svgstr.encode('utf-8'))
|
|
|
|
# frame-number counter
|
|
frameNr = 0
|
|
|
|
# iterate through the animation seqence frame by frame
|
|
# frame is a ... tbd
|
|
for frame in task.sequence(task.parameters):
|
|
# print a line for each and every frame generated
|
|
if debug:
|
|
print("frameNr {0:3d} => {1}".format(frameNr, frame))
|
|
|
|
# open the output-file (named ".gen.svg" in the workdir)
|
|
with open(os.path.join(task.workdir, '.gen.svg'), 'w') as fp:
|
|
# apply the replace-pairs to the input text, by finding the specified xml-elements by thier id and modify thier css-parameter the correct value
|
|
for replaceinfo in frame:
|
|
(id, type, key, value) = replaceinfo
|
|
|
|
for el in svg.findall(".//*[@id='"+id.replace("'", "\\'")+"']"):
|
|
if type == 'style':
|
|
style = cssutils.parseStyle( el.attrib['style'] if 'style' in el.attrib else '' )
|
|
style[key] = str(value)
|
|
el.attrib['style'] = style.cssText
|
|
|
|
elif type == 'attr':
|
|
el.attrib[key] = str(value)
|
|
|
|
elif type == 'text':
|
|
el.text = str(value)
|
|
|
|
# write the generated svg-text into the output-file
|
|
fp.write( etree.tostring(svg, encoding='unicode') )
|
|
|
|
# invoke inkscape to convert the generated svg-file into a png inside the .frames-directory
|
|
errorReturn = subprocess.check_output('cd {0} && inkscape --export-background=white --export-png=.frames/{1:04d}.png .gen.svg 2>&1 >/dev/null'.format(task.workdir, frameNr), shell=True, universal_newlines=True)
|
|
if errorReturn != '':
|
|
print("inkscape exitted with error\n"+errorReturn)
|
|
sys.exit(42)
|
|
|
|
# increment frame-number
|
|
frameNr += 1
|
|
|
|
|
|
|
|
# remove the dv/ts we are about to (re-)generate
|
|
ensureFilesRemoved(os.path.join(task.workdir, task.outfile))
|
|
|
|
# invoke avconv aka ffmpeg and renerate a lossles-dv from the frames
|
|
# if we're not in debug-mode, suppress all output
|
|
if task.outfile.endswith('.ts'):
|
|
cmd = 'cd {0} && ffmpeg -ar 48000 -ac 2 -f s16le -i /dev/zero -f image2 -i .frames/%04d.png -pix_fmt yuv420p -c:v mpeg2video -b:v 5000k -f mpegts -aspect 16:9 -shortest "{1}"'.format(task.workdir, task.outfile)
|
|
else:
|
|
cmd = 'cd {0} && ffmpeg -ar 48000 -ac 2 -f s16le -i /dev/zero -f image2 -i .frames/%04d.png -target pal-dv -aspect 16:9 -shortest "{1}"'.format(task.workdir, task.outfile)
|
|
|
|
if debug:
|
|
print(cmd)
|
|
|
|
r = os.system(cmd + ('' if debug else '>/dev/null 2>&1'))
|
|
|
|
# as before, in non-debug-mode the thread-worker does all progress messages
|
|
if debug:
|
|
if r != 0:
|
|
sys.exit()
|
|
|
|
print("cleanup")
|
|
|
|
# remove the .frames-dir with all frames in it
|
|
shutil.rmtree(os.path.join(task.workdir, '.frames'))
|
|
|
|
# remove the generated svg
|
|
ensureFilesRemoved(os.path.join(task.workdir, '.gen.svg'))
|
|
|
|
|
|
# Download the Events-Schedule and parse all Events out of it. Yield a tupel for each Event
|
|
def events(scheduleUrl, titlemap={}):
|
|
print("downloading pentabarf schedule")
|
|
|
|
# download the schedule
|
|
response = urlopen(scheduleUrl)
|
|
|
|
# read xml-source
|
|
xml = response.read()
|
|
|
|
# parse into ElementTree
|
|
schedule = etree.fromstring(xml)
|
|
|
|
# iterate all days
|
|
for day in schedule.iter('day'):
|
|
# iterate all rooms
|
|
for room in day.iter('room'):
|
|
# iterate events on that day in this room
|
|
for event in room.iter('event'):
|
|
# aggregate names of the persons holding this talk
|
|
personnames = []
|
|
if event.find('persons') is not None:
|
|
for person in event.find('persons').iter('person'):
|
|
personnames.append(person.text)
|
|
|
|
# yield a tupel with the event-id, event-title and person-names
|
|
yield {
|
|
'id': int(event.get('id')),
|
|
'title': titlemap[id] if id in titlemap else event.find('title').text.strip(),
|
|
'subtitle': event.find('subtitle').text.strip() if event.find('subtitle') is not None and event.find('subtitle').text is not None else '',
|
|
'persons': personnames,
|
|
'personnames': ', '.join(personnames)
|
|
}
|
|
|
|
try:
|
|
from termcolor import colored
|
|
except ImportError:
|
|
def colored(str, col):
|
|
return str
|