def run_pipeline(url=None,
hmm=None,
lm=None,
dict=None,
caption_format='webvtt',
out_file=None):
if url is None:
raise Exception('No URL specified!')
pipeline = Gst.parse_launch('uridecodebin name=source ! audioconvert !' +
' audioresample ! pocketsphinx name=asr !' +
' fakesink')
source = pipeline.get_by_name('source')
source.set_property('uri', url)
pocketsphinx = pipeline.get_by_name('asr')
if hmm:
pocketsphinx.set_property('hmm', hmm)
if lm:
pocketsphinx.set_property('lm', lm)
if dict:
pocketsphinx.set_property('dict', dict)
bus = pipeline.get_bus()
# Start playing
pipeline.set_state(Gst.State.PLAYING)
cap_set = CaptionSet()
captions = []
# Wait until error or EOS
while True:
try:
msg = bus.timed_pop(Gst.CLOCK_TIME_NONE)
if msg:
#if msg.get_structure():
# print(msg.get_structure().to_string())
if msg.type == Gst.MessageType.EOS:
break
struct = msg.get_structure()
if struct and struct.get_name() == 'pocketsphinx':
if struct['final']:
c = Caption()
c.start = struct['start_time'] / Gst.USECOND
c.end = struct['end_time'] / Gst.USECOND
c.nodes.append(
CaptionNode.create_text(struct['hypothesis']))
captions.append(c)
except KeyboardInterrupt:
pipeline.send_event(Gst.Event.new_eos())
# Free resources
pipeline.set_state(Gst.State.NULL)
cap_set.set_captions('en-US', captions)
writer = SRTWriter() if caption_format == 'srt' else WebVTTWriter()
caption_data = writer.write(cap_set)
if out_file is not None:
codecs.open(out_file, 'w', 'utf-8').write(caption_data)
else:
print(caption_data)
stories = codecs.open('story.txt', 'r', 'utf-8').readlines()
def microsec(t):
return t * 1000000
offset = 0.0
captions = []
for line in sys.stdin:
if line.startswith(' '):
continue
tokens = line.split()
if len(tokens) != 3:
continue
dirname = tokens[0]
index = int(dirname.split('/')[-1]) - 1
duration = float(tokens[2])
print duration
text = stories[index]
cap = Caption(microsec(offset), microsec(offset + duration),
[CaptionNode.create_text(text)])
offset += duration
captions.append(cap)
caps = CaptionSet({'en': captions})
srt = codecs.open('output.srt', 'w', 'utf-8')
srt.write(SRTWriter().write(caps))
srt.close()
