def _parse_input(self, line):
'''
>>> p = FFmpegOutputParser()
not matched:
>>> p._parse_input('') is None
True
flv
>>> p._parse_input("Input #0, flv, from '1.flv':")
{'type': 'flv'}
mp4
>>> p._parse_input("Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1.mp4':")
{'type': 'mp4'}
mpeg
>>> p._parse_input("Input #0, mpeg, from '2.mpg':")
{'type': 'mpeg'}
unknown type
>>> p._parse_input("Input #0, image2, from 'logo.png':")
{'type': 'n/a'}
'''
m = re.match('Input #0, (.*), from .*', line)
if m is None:
return None
types = m.group(1)
known_types = ['asf', 'avi', 'flv', 'mp4', 'mpeg', 'rm']
for t in known_types:
if t in types:
return Dict(type=t)
else:
return Dict(type='n/a')
def row2dict(row):
if row is None:
return None
d = Dict()
for c in row.__table__.columns:
d[c.name] = getattr(row, c.name)
return d
def _hook(d):
o = Dict()
for k, v in d.items():
if is_str and isinstance(v, unicode):
v = str(v)
o[str(k)] = v
return o
def _parse_output(self, stdout):
keyframes = []
for line in stdout.readlines():
line = line.rstrip('\r\n')
ss = line.split(',')
time = long(float(ss[4]) * 1000)
bytes = long(ss[7])
keyframes.append(Dict(time=time, bytes=bytes))
return keyframes
def page(q, start, length, process_data=True):
data = slice_query(q, start, length).all()
count = q.count()
d = Dict()
if process_data:
d.data = rs2dict(data)
else:
d.data = data
d.count = count
d.start = start
d.len = length
return d
def _validate(self, d):
d = Dict(d)
try:
value = eval(self._expression, d)
except KeyError:
raise ArgMissingError(self._expression)
except AttributeError:
raise ArgMissingError(self._expression)
except:
raise ArgError(
'VALIDATION_FAILED',
'Failed to evaluate expression "%s".' % self._expression)
self._validate_value(value)
def _call(self, api, **fields):
resp_headers = Dict.get_and_del_from_dict(fields, 'resp_headers', {})
if api.startswith('public/'):
# should use GET
url = self.url + api + '?' + urllib.urlencode(fields)
fields = None
else:
# should use POST
url = self.url + api
headers = self._get_token_header(api)
resp = httputil.curl(url, fields, headers, use_json=True, resp_headers=resp_headers)
self._check_error(resp)
return resp
def _evaluate(self, vars):
'''
>>> LogDecorator('aaa')._evaluate({})
(True, 'aaa')
>>> LogDecorator('aaa', '1 == 2')._evaluate({})
(False, None)
'''
vars = Dict(vars)
vars.os = os
condition = eval(self._condition, vars)
if condition:
return True, self._evaluate_message(vars)
else:
return False, None
def parse(self, output):
lines = output.split('\n')
meta = Dict(videoStream=None, audioStream=None)
for line in lines:
line = line.strip()
input = self._parse_input(line)
if input is not None:
meta.update(input)
duration = self._parse_duration(line, meta)
if duration is not None:
meta.update(duration)
if meta.videoStream is None:
meta.videoStream = self._parse_vs(line)
if meta.audioStream is None:
meta.audioStream = self._parse_as(line)
return meta
def _load_ftp_sites():
types = set([
k.split('.')[2] for k in _props.keys()
if k.startswith('distribution.ftp.')
])
sites = {}
for type in types:
site = Dict()
site.host = _props.get('distribution.ftp.%s.host' % type)
site.user = _props.get('distribution.ftp.%s.userName' % type)
site.passwd = _props.get('distribution.ftp.%s.password' % type)
site.root_dir = _props.get('distribution.ftp.%s.rootDir' % type)
site.dest_root_dir = _props.get('distribution.ftp.%s.destRootDir' %
type)
sites[type] = site
return sites
def _call(self, api, **fields):
resp_headers = Dict.get_and_del_from_dict(fields, 'resp_headers', {})
if api.startswith('public/'):
# should use GET
url = self.url + api + '?' + urllib.urlencode(fields)
fields = None
else:
# should use POST
url = self.url + api
headers = self._get_token_header(api)
resp = httputil.curl(url,
fields,
headers,
use_json=True,
resp_headers=resp_headers)
self._check_error(resp)
return resp
def list_processes(cmd, match_end=True):
p = subprocess.Popen('ps ax -o pid,cmd|grep "%s"' % cmd,
shell=True,
stdout=subprocess.PIPE)
stdout, stderr = p.communicate() #@UnusedVariable
log.info(u'ps ax out: %s, err: %s' % (stdout, stderr))
processes = []
for line in stdout.splitlines():
pid, command = line.strip().split(' ', 1)
if match_end:
if command != cmd:
continue
else:
if not command.startswith(cmd):
continue
processes.append(Dict(pid=int(pid), cmd=command))
p = subprocess.Popen('id', shell=True, stdout=subprocess.PIPE)
stdout, stderr = p.communicate()
log.info(u'id out: %s, err: %s' % (stdout, stderr))
return processes
def _parse_flvtool_output(output):
in_bytes = False
in_time = False
bytes_list = []
time_list = []
for line in output.splitlines():
line = line.strip()
if line == 'filepositions: {':
in_bytes = True
elif line == 'times: {':
in_time = True
elif line == '}':
in_bytes = False
in_time = False
elif in_bytes:
bytes_list.append(long(float(line)))
elif in_time:
time_list.append(long(float(line) * 1000))
return [
Dict(bytes=bytes_list[i], time=time_list[i])
for i in range(len(bytes_list))
]
def _parse_response(lines):
'''
>>> r = _parse_response(['exitcode:', '0', 'stdout:', 'output1\\noutput2', 'stderr:', 'error1\\nerror2'])
>>> r.exitcode
0
>>> r.stdout
'output1\\noutput2'
>>> r.stderr
'error1\\nerror2'
>>> r = _parse_response(['exitcode:', '0', 'stdout:', 'stderr:'])
>>> r.stdout
''
>>> r.stderr
''
'''
r = Dict()
stdout_index = lines.index('stdout:')
stderr_index = lines.index('stderr:')
r.exitcode = int(lines[1])
r.stdout = '\n'.join(lines[stdout_index + 1:stderr_index])
r.stderr = '\n'.join(lines[stderr_index + 1:])
return r
def dict(self):
return Dict([(k, v) for k, v in self.__dict__.items() if not k.startswith('_')])
def _parse_as(self, line):
'''
>>> p = FFmpegOutputParser()
not matched:
>>> s = p._parse_as('')
>>> s is None
True
normal situation:
>>> s = p._parse_as('Stream #0.0: Audio: wmav2, 44100 Hz, 2 channels, s16, 64 kb/s')
>>> s.type
'wmav2'
>>> s.channels
2
>>> s.kbps
64
>>> s.sampleRate
44100
mono channel
>>> s = p._parse_as('Stream #0.1: Audio: aac, 44100 Hz, mono, s16, 64 kb/s')
>>> s.channels
1
2 channels
>>> s = p._parse_as('Stream #0.1: Audio: aac, 44100 Hz, 2 channels (FC), s16, 32 kb/s')
>>> s.channels
2
stereo channels
>>> s = p._parse_as('Stream #0.0: Audio: wmav2, 44100 Hz, 2 channels, s16, 64 kb/s')
>>> s.channels
2
5.1 channels
>>> s = p._parse_as('Stream #0.1: Audio: ac3, 48000 Hz, 5.1, s16, 384 kb/s')
>>> s.channels
6
channels with braces
>>> s = p._parse_as('Stream #0.1: Audio: aac, 44100 Hz, 2 channels (FC), s16, 47 kb/s')
>>> s.channels
2
no kbps
>>> s = p._parse_as('Stream #0.1(eng): Audio: mp3, 11025 Hz, 1 channels, s16')
>>> s.kbps
0
invalid audio stream caused by flvtool++
>>> s = p._parse_as('Stream #0.0: Audio: [0][0][0][0] / 0x0000, 0 channels')
>>> s is None
True
default audio stream
>>> s = p._parse_as('Stream #0.1(eng): Audio: dca (DTS), 48000 Hz, 5.1, s16, 1536 kb/s (default)')
>>> s.kbps
1536
'''
m = re.match('Stream #.*?: Audio: (.+)', line)
if m is None:
return None
fields = m.group(1)
if '0 channels' in fields:
# invalid metadata caused by flvtool++
return None
fields = fields.split(', ')
s = Dict()
s.type = fields[0]
s.sampleRate = int(fields[1][:-3]) # 44100 Hz
if len(fields) == 5:
end = fields[4].find(' kb/s')
s.kbps = int(fields[4][:end])
else:
s.kbps = 0
channels = fields[2]
if channels == 'mono':
s.channels = 1
elif channels == 'stereo':
s.channels = 2
elif channels.find(' channel') != (-1):
s.channels = int(channels[:1])
elif re.match('\\d\\.\\d', channels):
s.channels = int(channels[:1]) + int(channels[2:3])
else:
logging.warn(
'Failed to get audio channels from source video metadata.')
raise TranscodeError(
'Failed to get audio channels from source video metadata.')
return s
def _parse_vs(self, line):
'''
>>> p = FFmpegOutputParser()
not matched:
>>> vs = p._parse_vs('')
>>> vs is None
True
normal situation:
>>> vs = p._parse_vs('Stream #0.1: Video: rv30, yuv420p, 200x164, 36 kb/s, 12.05 fps, 12 tbr, 1k tbn, 12 tbc')
>>> vs.type
'rv30'
>>> vs.width
200
>>> vs.height
164
>>> vs.kbps
36
>>> vs.frameRate == 12.05
True
no frame rate
>>> vs = p._parse_vs('Stream #0.1(chi): Video: wmv3, yuv420p, 320x240, 65 kb/s, 15 tbr, 1k tbn, 1k tbc')
>>> vs.frameRate
0
video type has space and braces
>>> vs = p._parse_vs('Stream #0.0(und): Video: h264 (Constrained Baseline), yuv420p, 480x320, 252 kb/s, 24.01 fps, 24 tbr, 30k tbn, 59.94 tbc')
>>> vs.type
'h264'
video type has 0x1 which may be mistaken as wi/hi
>>> vs = p._parse_vs('Stream #0.0[0x1e0]: Video: mpeg1video, yuv420p, 352x288 [PAR 178:163 DAR 1958:1467], 1150 kb/s, 31.52 fps, 25 tbr, 90k tbn, 25 tbc')
>>> vs.type
'mpeg1video'
>>> vs.width
352
>>> vs.height
288
'''
m = re.match('Stream #.*?: Video: (?P<type>.+?), (?P<remain>.+)', line)
if m is None:
return None
vs = Dict()
# type may contain spaces and braces, e.g., "h264 (Constrained Baseline)"
vs.type = m.group('type').split(' ')[0]
remain = m.group('remain')
m = re.search(', (\\d+)x(\\d+)[, ]', remain)
vs.width = int(m.group(1))
vs.height = int(m.group(2))
m = re.search(', (\\d+) kb/s,', remain)
vs.kbps = int(m.group(1)) if m else 0
m = re.search(', ([\\.\\d]+) fps,', remain)
vs.frameRate = 0 if m is None else float(m.group(1))
return vs
