pause and more special sequences

This commit is contained in:
MaZderMind 2014-05-05 23:19:55 +02:00
parent 176e58f73b
commit c5c3edd9dd
11 changed files with 490 additions and 375 deletions

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@ -21,14 +21,6 @@ from threading import Thread, Lock
import subprocess
from Queue import Queue
# URL to Schedule-XML
scheduleUrl = 'http://www.fossgis.de/konferenz/2014/programm/schedule.de.xml'
# For (really) too long titles
titlemap = {
#708: "Neue WEB-Anwendungen des LGRB Baden-Württemberg im Überblick"
}
# Frames per second. Increasing this renders more frames, the avconf-statements would still need modifications
fps = 25
@ -36,27 +28,10 @@ fps = 25
# just renders one type of video
debug = ('--debug' in sys.argv)
# using --offline only skips the network fetching and use a local schedule.de.xml
offline = ('--offline' in sys.argv)
# set charset of output-terminal
reload(sys)
sys.setdefaultencoding('utf-8')
# 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 easeOutQuad(t, b, c, d):
t=float(t)/d
return -c *(t)*(t-2) + b;
# try to create all folders needed and skip, they already exist
def ensurePathExists(path):
try:
@ -70,106 +45,15 @@ def ensureFilesRemoved(pattern):
for f in glob.glob(pattern):
os.unlink(f)
def abspannFrames():
# 9 Sekunden
# 3 Sekunden Fadein Logo
frames = int(3*fps)
for i in range(0, frames):
yield (
('logo', 'style', 'opacity', "%.4f" % easeInCubic(i, 0, 1, frames)),
('box', 'style', 'opacity', 0)
)
# 3 Sekunde Fadein Box
frames = 3*fps
for i in range(0, frames):
yield (
('logo', 'style', 'opacity', 1),
('box', 'style', 'opacity', "%.4f" % easeOutQuad(i, 0, 1, frames)),
('box', 'attr', 'transform', 'translate(0,%.4f)' % easeOutQuad(i, 94, -94, frames) )
#('box', 'attr', 'transform', 'translate(%.4f,0)' % easeOutQuad(i, 960, -960, frames) )
)
# 3 Sekunden stehen bleiben
frames = 3*fps
for i in range(0, frames):
yield (
('logo', 'style', 'opacity', 1),
('box', 'style', 'opacity', 1)
)
def vorspannFrames():
def pauseFrames():
# 7 Sekunden
# 0.5 Sekunden stehen bleiben
frames = int(math.ceil(0.5*fps))
frames = 7*fps
for i in range(0, frames):
yield (
('logo', 'style', 'opacity', 0),
('box', 'style', 'opacity', 0)
('sun', 'attr', 'transform', "translate(625, 625) translate(-450, -375) rotate(%.4f) translate(-625, -625)" % (float(i)/float(frames)*30)),
)
# 1.5 Sekunden Fadein Logo
frames = int(math.ceil(1.5*fps))
for i in range(0, frames):
yield (
('logo', 'style', 'opacity', "%.4f" % easeInCubic(i, 0, 1, frames)),
('box', 'style', 'opacity', 0)
)
# 3 Sekunde Fadein Box
frames = 3*fps
for i in range(0, frames):
yield (
('logo', 'style', 'opacity', 1),
('box', 'style', 'opacity', "%.4f" % easeOutQuad(i, 0, 1, frames)),
('box', 'attr', 'transform', 'translate(0,%.4f)' % easeOutQuad(i, 198, -198, frames) )
#('box', 'attr', 'transform', 'translate(%.4f,0)' % easeOutQuad(i, 960, -960, frames) )
)
# 3 Sekunden stehen bleiben
frames = 3*fps
for i in range(0, frames):
yield (
('logo', 'style', 'opacity', 1),
('box', 'style', 'opacity', 1)
)
def pauseFrames():
# 12 Sekunden
texts = {
'text1': "0.0",
'text2': "0.0",
'text3': "0.0"
}
for name in texts.keys():
# 2 Sekunden einfaden
frames = 2*fps
for i in range(0, frames):
texts[name] = "%.4f" % easeOutQuad(i, 0, 1, frames)
yield (
('text1', 'style', 'opacity', texts['text1']),
('text2', 'style', 'opacity', texts['text2']),
('text3', 'style', 'opacity', texts['text3'])
)
# 2 Sekunden ausfaden
frames = 2*fps
for i in range(0, frames):
texts[name] = "%.4f" % easeOutQuad(i, 1, -1, frames)
yield (
('text1', 'style', 'opacity', texts['text1']),
('text2', 'style', 'opacity', texts['text2']),
('text3', 'style', 'opacity', texts['text3'])
)
texts[name] = "0.0"
cssutils.ser.prefs.lineSeparator = ' '
cssutils.log.setLevel(logging.ERROR)
@ -252,218 +136,20 @@ def render(infile, outfile, sequence, parameters={}, workdir='artwork'):
ensureFilesRemoved(os.path.join(workdir, '.gen.svg'))
# Download the Events-Schedule and parse all Events out of it. Yield a tupel for each Event
def events():
print "downloading pentabarf schedule"
# use --offline to skip networking
if offline:
# parse the offline-version
schedule = etree.parse('schedule.de.xml').getroot()
else:
# download the schedule
response = urllib2.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 = []
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 ( int(event.get('id')), event.find('title').text, event.find('subtitle').text or '', ', '.join(personnames) )
# debug-mode selected by --debug switch
if debug:
print "!!! DEBUG MODE !!!"
render(
'vorspann.svg',
'../intro.dv',
vorspannFrames,
{
'$id': 667,
'$title': 'OpenJUMP - Überblick, Neuigkeiten, Zusammenarbeit/Schnittstellen mit proprietärer Software',
'$subtitle': 'Even more news about OpenJUMP',
'$personnames': 'Matthias S.'
}
)
render(
'abspann.svg',
'../outro.dv',
abspannFrames
)
render('pause.svg',
render(
'pause.svg',
'../pause.dv',
pauseFrames
)
)
sys.exit(0)
# threaded task queue
tasks = Queue()
# iterate over all events extracted from the schedule xml-export
for (id, title, subtitle, personnames) in events():
if id in titlemap:
title = titlemap[id]
# generate a task description and put them into the queue
tasks.put((
'vorspann.svg',
str(id)+".dv",
vorspannFrames,
{
'$id': id,
'$title': title,
'$subtitle': subtitle,
'$personnames': personnames
}
))
# place a task for the outro into the queue
tasks.put((
'abspann.svg',
'outro.dv',
abspannFrames
))
# place the pause-sequence into the queue
tasks.put((
'pause.svg',
'pause.dv',
render(
'novideo.svg',
'../novideo.dv',
pauseFrames
))
)
# one working thread per cpu
num_worker_threads = multiprocessing.cpu_count()
print "{0} tasks in queue, starting {1} worker threads".format(tasks.qsize(), num_worker_threads)
# put a sentinel for each thread into the queue to signal the end
for _ in range(num_worker_threads):
tasks.put(None)
# this lock ensures, that only one thread at a time is writing to stdout
# and avoids output from multiple threads intermixing
printLock = Lock()
def tprint(str):
# aquire lock
printLock.acquire()
# print thread-name and message
print threading.current_thread().name+': '+str
# release lock
printLock.release()
# thread worker
def worker():
# generate a tempdir for this worker-thread and use the artwork-subdir as temporary folder
tempdir = tempfile.mkdtemp()
workdir = os.path.join(tempdir, 'artwork')
# save the current working dir as output-dir
outdir = os.getcwd()
# print a message that we're about to initialize our environment
tprint("initializing worker in {0}, writing result to {1}".format(tempdir, outdir))
# copy the artwork-dir into the tempdir
shutil.copytree('artwork', workdir)
# loop until all tasks are done (when the thread fetches a sentinal from the queue)
while True:
# fetch a task from the queue
task = tasks.get()
# if it is a stop-sentinal break out of the loop
if task == None:
break
# print that we're about to render a task
tprint('rendering {0}'.format(task[1]))
# render options
opts = (
# argument 0 is the input file. prepend the workdir
os.path.join(workdir, task[0]),
# argument 1 is the output file. prepend the outdir
os.path.join(outdir, task[1]),
# argument 2 is the frame generator, nothing to do here
task[2],
# argument 3 are the extra parameters
task[3] if len(task) > 3 else {},
# argument 4 is the workdir path
workdir
)
# render with these arguments
render(*opts)
# print that we're finished
tprint('finished {0}, {1} tasks left'.format(task[1], max(0, tasks.qsize() - num_worker_threads)))
# mark the task as finished
tasks.task_done()
# all tasks from the queue done, clean up
tprint("cleaning up worker")
# remove the tempdir
shutil.rmtree(tempdir)
# mark the sentinal as done
tasks.task_done()
# List of running threads
threads = []
# generate and start the threads
for i in range(num_worker_threads):
t = Thread(target=worker)
t.daemon = True
t.start()
threads.append(t)
# wait until they finished doing the work
# we're doing it the manual way because tasks.join() would wait until all tasks are done,
# even if the worker threads crash due to broken svgs, Ctrl-C termination or whatnot
while True:
if tasks.empty() == True:
break
# sleep while the workers work
time.sleep(1)
# check if all worker-threads are still alive
thread_count = len(filter(lambda t: t.is_alive(), threads))
# exit otherwise
if thread_count != num_worker_threads:
tprint("{0} of {1} threads have died, ending".format(num_worker_threads - thread_count, num_worker_threads))
sys.exit(23)
print "all worker threads ended"
render(
'nostream.svg',
'../nostream.dv',
pauseFrames
)