def freshair_crontab():
"""
This python module downloads a Fresh Air episode on a particular weekday
"""
# get current time
current_date = datetime.date.fromtimestamp(time.time())
if not npr_utils.is_weekday( current_date ):
print "Error, today is not a weekday. Instead, today is %s." % \
current_date.strftime('%A')
return
# now download the episode into the correct directory
freshair.get_freshair('/mnt/media/freshair', current_date,
check_if_exist = True)
def freshair_crontab():
"""
This python module downloads a Fresh Air episode on a particular weekday
"""
# get current time
current_date = datetime.date.fromtimestamp(time.time())
if not npr_utils.is_weekday(current_date):
print "Error, today is not a weekday. Instead, today is %s." % \
current_date.strftime('%A')
return
# now download the episode into the correct directory
freshair.get_freshair('/mnt/media/freshair',
current_date,
check_if_exist=True)
def get_freshair(outputdir,
date_s,
order_totnum=None,
file_data=None,
debug=False,
do_mp4=False,
exec_dict=None,
check_if_exist=False,
mp3_exist=False,
to_file_debug=True):
# check if outputdir is a directory
if not os.path.isdir(outputdir):
raise ValueError("Error, %s is not a directory." % outputdir)
# check if actually a weekday
assert (npr_utils.is_weekday(date_s))
if exec_dict is None:
exec_dict = npr_utils.find_necessary_executables()
assert (exec_dict is not None)
avconv_exec = exec_dict['avconv']
if order_totnum is None:
order_totnum = npr_utils.get_order_number_weekday_in_year(date_s)
order_in_year, tot_in_year = order_totnum
if file_data is None:
file_data = get_freshair_image()
decdate = date_s.strftime('%d.%m.%Y')
m4afile = os.path.join(outputdir, 'NPR.FreshAir.%s.m4a' % decdate)
if check_if_exist and os.path.isfile(m4afile):
return
nprURL = npr_utils.get_NPR_URL(date_s, _npr_FreshAir_progid,
npr_utils.get_api_key())
year = date_s.year
# download this data into an lxml elementtree
tree = lxml.etree.fromstring(requests.get(nprURL).content)
if debug:
# print 'URL = %s' % nprURL
if to_file_debug:
with open(
os.path.join(outputdir,
'NPR.FreshAir.tree.%s.xml' % decdate),
'w') as openfile:
openfile.write(lxml.etree.tostring(tree))
return tree
# check for unavailable tag
if len(
list(
filter(
lambda elem: 'value' in elem.keys() and elem.get('value')
== 'true', tree.iter('unavailable')))) != 0:
unavailable_elem = max(
filter(
lambda elem: 'value' in elem.keys() and elem.get('value') ==
'true', tree.iter('unavailable')))
if unavailable_elem.text is None:
print(
'Could not create Fresh Air episode for date %s for some reason'
% npr_utils.get_datestring(date_s))
else:
print(
'Could not create Fresh Air episode for date %s for this reason: %s'
% (npr_utils.get_datestring(date_s),
unavailable_elem.text.strip()))
return
# now get tuple of title to mp3 file
if not do_mp4:
try:
title_mp3_urls = _process_freshair_titlemp3_tuples_one(tree)
except ValueError:
title_mp3_urls = _process_freshair_titlemp3_tuples_two(tree)
if len(title_mp3_urls) == 0:
print('Error, could not find any Fresh Air episodes for date %s.' %
npr_utils.get_datestring(date_s))
return
titles, songurls = zip(*title_mp3_urls)
outfiles = [
os.path.join(outputdir, 'freshair.%s.%d.mp3' % (decdate, num + 1))
for (num, mp3url) in enumerate(songurls)
]
if mp3_exist:
assert (all([os.path.isfile(outfile) for outfile in outfiles]))
else:
title_mp4_urls = _process_freshair_titlemp4_tuples(tree)
if len(title_mp4_urls) == 0:
print('Error, could not find any Fresh Air episodes for date %s.' %
npr_utils.get_datestring(date_s))
return
titles, songurls = zip(*title_mp4_urls)
outfiles = [
os.path.join(outputdir, 'freshair.%s.%d.mp4' % (decdate, num + 1))
for (num, mp4url) in enumerate(songurls)
]
title = date_s.strftime('%A, %B %d, %Y')
title = '%s: %s.' % (title, '; '.join(
['%d) %s' % (num + 1, titl) for (num, titl) in enumerate(titles)]))
# download those files
time0 = time.time()
pool = multiprocessing.Pool(processes=len(songurls))
if not mp3_exist:
outfiles = list(
filter(None, pool.map(_download_file, zip(songurls, outfiles))))
if do_mp4: # replace mp4 with ac3
newouts = []
for outfile in outfiles:
newfile = re.sub('\.mp4$', '.ac3', outfile)
split_cmd = [avconv_exec, '-y', '-i', outfile, newfile]
proc = subprocess.Popen(split_cmd,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
stdout_val, stderr_val = proc.communicate()
os.remove(outfile)
newouts.append(newfile)
outfiles = newouts
# sox magic command
#wgdate = date_s.strftime('%d-%b-%Y')
#wavfile = os.path.join(outputdir, 'freshair%s.wav' % wgdate ).replace(' ', '\ ')
#split_cmd = [ '(for', 'file', 'in', ] + fnames + [
# ';', sox_exec, '$file', '-t', 'cdr', '-', ';', 'done)' ] + [
# '|', sox_exec, 't-', 'cdr', '-', wavfile ]
#split_cmd = [ sox_exec, ] + fnames + [ wavfile, ]
#print split_cmd
#return
#proc = subprocess.Popen(split_cmd, stdout = subprocess.PIPE, stderr = subprocess.PIPE)
#stdout_val, stderr_val = proc.communicate()
#for filename in outfiles:
# os.remove(filename)
# now convert to m4a file
# /usr/bin/avconv -y -i freshair$wgdate.wav -ar 44100 -ac 2 -aq 400 -acodec libfaac NPR.FreshAir."$decdate".m4a ;
time0 = time.time()
fnames = [filename.replace(' ', '\ ') for filename in outfiles]
avconv_concat_cmd = 'concat:%s' % '|'.join(fnames)
split_cmd = [
avconv_exec, '-y', '-i', avconv_concat_cmd, '-ar', '44100', '-ac', '2',
'-threads',
'%d' % multiprocessing.cpu_count(), '-strict', 'experimental',
'-acodec', 'aac', m4afile
]
proc = subprocess.Popen(split_cmd,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
stdout_val, stderr_val = proc.communicate()
# remove wav file
for filename in outfiles:
os.remove(filename)
# now put in metadata
mp4tags = mutagen.mp4.MP4(m4afile)
mp4tags.tags['\xa9nam'] = [
title,
]
mp4tags.tags['\xa9alb'] = [
'Fresh Air From WHYY: %d' % year,
]
mp4tags.tags['\xa9ART'] = [
'Terry Gross',
]
mp4tags.tags['\xa9day'] = [
'%d' % year,
]
mp4tags.tags['\xa9cmt'] = [
"more info at : Fresh Air from WHYY and NPR Web site",
]
mp4tags.tags['trkn'] = [
(order_in_year, tot_in_year),
]
mp4tags.tags['covr'] = [
mutagen.mp4.MP4Cover(file_data, mutagen.mp4.MP4Cover.FORMAT_PNG),
]
mp4tags.tags['\xa9gen'] = [
'Podcast',
]
mp4tags.tags['aART'] = [
'Terry Gross',
]
mp4tags.save()
return m4afile
def get_freshair(outputdir, date_s, order_totnum = None,
file_data = None, debug = False, do_mp4 = False,
exec_dict = None, check_if_exist = False,
mp3_exist = False, to_file_debug = True ):
# check if outputdir is a directory
if not os.path.isdir(outputdir):
raise ValueError("Error, %s is not a directory." % outputdir)
# check if actually a weekday
assert( npr_utils.is_weekday(date_s) )
if exec_dict is None:
exec_dict = npr_utils.find_necessary_executables()
assert( exec_dict is not None )
avconv_exec = exec_dict['avconv']
if order_totnum is None:
order_totnum = npr_utils.get_order_number_weekday_in_year(date_s)
order_in_year, tot_in_year = order_totnum
if file_data is None:
file_data = get_freshair_image()
decdate = date_s.strftime('%d.%m.%Y')
m4afile = os.path.join(outputdir, 'NPR.FreshAir.%s.m4a' % decdate )
if check_if_exist and os.path.isfile(m4afile):
return
nprURL = npr_utils.get_NPR_URL(date_s, _npr_FreshAir_progid,
npr_utils.get_api_key() )
year = date_s.year
# download this data into an lxml elementtree
tree = lxml.etree.fromstring( requests.get(nprURL).content )
if debug:
# print 'URL = %s' % nprURL
if to_file_debug:
with open(os.path.join(outputdir, 'NPR.FreshAir.tree.%s.xml' % decdate), 'w') as openfile:
openfile.write( lxml.etree.tostring( tree ) )
return tree
# check for unavailable tag
if len(filter(lambda elem: 'value' in elem.keys() and
elem.get('value') == 'true', tree.iter('unavailable'))) != 0:
unavailable_elem = max(filter(lambda elem: 'value' in elem.keys() and
elem.get('value') == 'true',
tree.iter('unavailable')))
if unavailable_elem.text is None:
print 'Could not create Fresh Air episode for date %s for some reason' % npr_utils.get_datestring( date_s )
else:
print 'Could not create Fresh Air episode for date %s for this reason: %s' % \
( npr_utils.get_datestring( date_s ), unavailable_elem.text.strip() )
return
# now get tuple of title to mp3 file
if not do_mp4:
try:
title_mp3_urls = _process_freshair_titlemp3_tuples_one(tree)
except ValueError:
title_mp3_urls = _process_freshair_titlemp3_tuples_two(tree)
if len(title_mp3_urls) == 0:
print 'Error, could not find any Fresh Air episodes for date %s.' % \
npr_utils.get_datestring( date_s )
return
titles, songurls = zip(*title_mp3_urls)
outfiles = [ os.path.join(outputdir, 'freshair.%s.%d.mp3' %
( decdate, num + 1) ) for
(num, mp3url) in enumerate( songurls ) ]
if mp3_exist:
assert(all([ os.path.isfile( outfile ) for outfile in outfiles ]) )
else:
title_mp4_urls = _process_freshair_titlemp4_tuples( tree )
if len(title_mp4_urls) == 0:
print 'Error, could not find any Fresh Air episodes for date %s.' % \
npr_utils.get_datestring( date_s )
return
titles, songurls = zip(*title_mp4_urls)
outfiles = [ os.path.join(outputdir, 'freshair.%s.%d.mp4' %
( decdate, num + 1) ) for
(num, mp4url) in enumerate( songurls ) ]
title = date_s.strftime('%A, %B %d, %Y')
title = '%s: %s.' % ( title,
'; '.join([ '%d) %s' % ( num + 1, titl ) for
(num, titl) in enumerate(titles) ]) )
# download those files
time0 = time.time()
pool = multiprocessing.Pool(processes = len(songurls) )
if not mp3_exist:
outfiles = filter(None, pool.map(_download_file, zip( songurls, outfiles ) ) )
if do_mp4: # replace mp4 with ac3
newouts = []
for outfile in outfiles:
newfile = re.sub('\.mp4$', '.ac3', outfile )
split_cmd = [ avconv_exec, '-y', '-i', outfile, newfile ]
proc = subprocess.Popen( split_cmd, stdout = subprocess.PIPE, stderr = subprocess.PIPE )
stdout_val, stderr_val = proc.communicate( )
os.remove( outfile )
newouts.append( newfile )
outfiles = newouts
# sox magic command
#wgdate = date_s.strftime('%d-%b-%Y')
#wavfile = os.path.join(outputdir, 'freshair%s.wav' % wgdate ).replace(' ', '\ ')
#split_cmd = [ '(for', 'file', 'in', ] + fnames + [
# ';', sox_exec, '$file', '-t', 'cdr', '-', ';', 'done)' ] + [
# '|', sox_exec, 't-', 'cdr', '-', wavfile ]
#split_cmd = [ sox_exec, ] + fnames + [ wavfile, ]
#print split_cmd
#return
#proc = subprocess.Popen(split_cmd, stdout = subprocess.PIPE, stderr = subprocess.PIPE)
#stdout_val, stderr_val = proc.communicate()
#for filename in outfiles:
# os.remove(filename)
# now convert to m4a file
# /usr/bin/avconv -y -i freshair$wgdate.wav -ar 44100 -ac 2 -aq 400 -acodec libfaac NPR.FreshAir."$decdate".m4a ;
time0 = time.time()
fnames = [ filename.replace(' ', '\ ') for filename in outfiles ]
avconv_concat_cmd = 'concat:%s' % '|'.join(fnames)
split_cmd = [ avconv_exec, '-y', '-i', avconv_concat_cmd, '-ar', '44100', '-ac', '2', '-threads', '%d' % multiprocessing.cpu_count(),
'-strict', 'experimental', '-acodec', 'aac', m4afile ]
proc = subprocess.Popen(split_cmd, stdout = subprocess.PIPE, stderr = subprocess.PIPE)
stdout_val, stderr_val = proc.communicate()
# remove wav file
for filename in outfiles:
os.remove(filename)
# now put in metadata
mp4tags = mutagen.mp4.MP4(m4afile)
mp4tags.tags['\xa9nam'] = [ title, ]
mp4tags.tags['\xa9alb'] = [ 'Fresh Air From WHYY: %d' % year, ]
mp4tags.tags['\xa9ART'] = [ 'Terry Gross', ]
mp4tags.tags['\xa9day'] = [ '%d' % year, ]
mp4tags.tags['\xa9cmt'] = [ "more info at : Fresh Air from WHYY and NPR Web site", ]
mp4tags.tags['trkn'] = [ ( order_in_year, tot_in_year ), ]
mp4tags.tags['covr'] = [ mutagen.mp4.MP4Cover(file_data, mutagen.mp4.MP4Cover.FORMAT_PNG ), ]
mp4tags.tags['\xa9gen'] = [ 'Podcast', ]
mp4tags.tags['aART'] = [ 'Terry Gross', ]
mp4tags.save()
return m4afile
