def start_pipeline(self, channels, samplerate):
self.pipeline = gst.parse_launch(self.pipe)
# store a pointer to appsrc in our encoder object
self.src = self.pipeline.get_by_name('src')
# store a pointer to appsink in our encoder object
self.app = self.pipeline.get_by_name('app')
srccaps = gst.Caps("""audio/x-raw-float,
endianness=(int)1234,
channels=(int)%s,
width=(int)32,
rate=(int)%d""" % (int(channels), int(samplerate)))
self.src.set_property("caps", srccaps)
self.src.set_property('emit-signals', True)
self.src.set_property('num-buffers', -1)
self.src.set_property('block', True)
self.src.set_property('do-timestamp', True)
self.bus = self.pipeline.get_bus()
self.bus.add_signal_watch()
self.bus.connect("message", self._on_message_cb)
import threading
class MainloopThread(threading.Thread):
def __init__(self, mainloop):
threading.Thread.__init__(self)
self.mainloop = mainloop
def run(self):
self.mainloop.run()
self.mainloop = gobject.MainLoop()
self.mainloopthread = MainloopThread(self.mainloop)
self.mainloopthread.start()
# start pipeline
self.pipeline.set_state(gst.STATE_PLAYING)
def setup(self, channels=None, samplerate=None, blocksize=None):
self.eod = False
self.last_buffer = None
if self.from_stack:
self._frames_iterator = iter(self.process_pipe.frames_stack)
return
if self.stack:
self.process_pipe.frames_stack = []
if self.uri_duration is None:
# Set the duration from the length of the file
self.uri_duration = self.uri_total_duration - self.uri_start
if self.is_segment:
# Check start and duration value
if self.uri_start > self.uri_total_duration:
raise ValueError(
('Segment start time value exceed media ' + 'duration'))
if self.uri_start + self.uri_duration > self.uri_total_duration:
raise ValueError("""Segment duration value is too large \
given the media duration""")
# a lock to wait wait for gstreamer thread to be ready
self.discovered_cond = threading.Condition(threading.Lock())
self.discovered = False
# the output data format we want
if blocksize:
self.output_blocksize = blocksize
if samplerate:
self.output_samplerate = int(samplerate)
if channels:
self.output_channels = int(channels)
if self.is_segment:
# Create the pipe with Gnonlin gnlurisource
self.pipe = ''' gnlurisource name=src uri={uri}
start=0
duration={uri_duration}
media-start={uri_start}
media-duration={uri_duration}
! audioconvert name=audioconvert
! audioresample
! appsink name=sink sync=False async=True
'''.format(
uri=self.uri,
uri_start=np.uint64(round(self.uri_start * gst.SECOND)),
uri_duration=np.int64(round(self.uri_duration * gst.SECOND)))
# convert uri_start and uri_duration to
# nanoseconds
else:
# Create the pipe with standard Gstreamer uridecodebin
self.pipe = ''' uridecodebin name=src uri={uri}
! audioconvert name=audioconvert
! audioresample
! appsink name=sink sync=False async=True
'''.format(uri=self.uri)
self.pipeline = gst.parse_launch(self.pipe)
if self.output_channels:
caps_channels = int(self.output_channels)
else:
caps_channels = "[ 1, 2 ]"
if self.output_samplerate:
caps_samplerate = int(self.output_samplerate)
else:
caps_samplerate = "{ 8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000, 96000 }"
sink_caps = gst.Caps("""audio/x-raw-float,
endianness=(int)1234,
channels=(int)%s,
width=(int)32,
rate=(int)%s""" % (caps_channels, caps_samplerate))
self.src = self.pipeline.get_by_name('src')
if not self.is_segment:
self.src.connect("autoplug-continue", self._autoplug_cb)
else:
uridecodebin = self.src.get_by_name('internal-uridecodebin')
uridecodebin.connect("autoplug-continue", self._autoplug_cb)
self.conv = self.pipeline.get_by_name('audioconvert')
self.conv.get_pad("sink").connect("notify::caps", self._notify_caps_cb)
self.sink = self.pipeline.get_by_name('sink')
self.sink.set_property("caps", sink_caps)
self.sink.set_property('max-buffers', GST_APPSINK_MAX_BUFFERS)
self.sink.set_property("drop", False)
self.sink.set_property('emit-signals', True)
self.sink.connect("new-buffer", self._on_new_buffer_cb)
self.bus = self.pipeline.get_bus()
self.bus.add_signal_watch()
self.bus.connect('message', self._on_message_cb)
self.queue = Queue.Queue(QUEUE_SIZE)
self.mainloop = gobject.MainLoop()
self.mainloopthread = MainloopThread(self.mainloop)
self.mainloopthread.start()
#self.mainloopthread = get_loop_thread()
##self.mainloop = self.mainloopthread.mainloop
# start pipeline
self.pipeline.set_state(gst.STATE_PLAYING)
self.discovered_cond.acquire()
while not self.discovered:
# print 'waiting'
self.discovered_cond.wait()
self.discovered_cond.release()
if not hasattr(self, 'input_samplerate'):
if hasattr(self, 'error_msg'):
raise IOError(self.error_msg)
else:
raise IOError('no known audio stream found')
def setup(self, channels=None, samplerate=None, blocksize=None):
self.eod = False
self.last_buffer = None
# a lock to wait wait for gstreamer thread to be ready
self.discovered_cond = threading.Condition(threading.Lock())
self.discovered = False
# the output data format we want
if blocksize:
self.output_blocksize = blocksize
if samplerate:
self.output_samplerate = int(samplerate)
if channels:
self.output_channels = int(channels)
# Create the pipe with standard Gstreamer uridecodbin
self.pipe = '''%s num-buffers=%d name=src
! audioconvert name=audioconvert
! audioresample
! appsink name=sink sync=False async=True
''' % (self.input_src, self.num_buffers)
self.pipeline = gst.parse_launch(self.pipe)
if self.output_channels:
caps_channels = int(self.output_channels)
else:
caps_channels = "[ 1, 2 ]"
if self.output_samplerate:
caps_samplerate = int(self.output_samplerate)
else:
caps_samplerate = "{ 8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000, 96000 }"
sink_caps = gst.Caps("""audio/x-raw-float,
endianness=(int)1234,
channels=(int)%s,
width=(int)32,
rate=(int)%s""" % (caps_channels, caps_samplerate))
self.src = self.pipeline.get_by_name('src')
self.conv = self.pipeline.get_by_name('audioconvert')
self.conv.get_pad("sink").connect("notify::caps", self._notify_caps_cb)
self.sink = self.pipeline.get_by_name('sink')
self.sink.set_property("caps", sink_caps)
self.sink.set_property('max-buffers', GST_APPSINK_MAX_BUFFERS)
self.sink.set_property("drop", False)
self.sink.set_property('emit-signals', True)
self.sink.connect("new-buffer", self._on_new_buffer_cb)
self.bus = self.pipeline.get_bus()
self.bus.add_signal_watch()
self.bus.connect('message', self._on_message_cb)
self.queue = Queue.Queue(QUEUE_SIZE)
self.mainloop = gobject.MainLoop()
self.mainloopthread = MainloopThread(self.mainloop)
self.mainloopthread.start()
#self.mainloopthread = get_loop_thread()
##self.mainloop = self.mainloopthread.mainloop
# start pipeline
self.pipeline.set_state(gst.STATE_PLAYING)
self.discovered_cond.acquire()
while not self.discovered:
# print 'waiting'
self.discovered_cond.wait()
self.discovered_cond.release()
if not hasattr(self, 'input_samplerate'):
if hasattr(self, 'error_msg'):
raise IOError(self.error_msg)
else:
raise IOError('no known audio stream found')
def setup(self, channels=None, samplerate=None, blocksize=None):
self.eod = False
self.last_buffer = None
if self.from_stack:
self._frames_iterator = iter(self.process_pipe.frames_stack)
return
if self.stack:
self.process_pipe.frames_stack = []
if self.uri_duration is None:
# Set the duration from the length of the file
self.uri_duration = self.uri_total_duration - self.uri_start
if self.is_segment:
# Check start and duration value
if self.uri_start > self.uri_total_duration:
raise ValueError(('Segment start time value exceed media ' +
'duration'))
if self.uri_start + self.uri_duration > self.uri_total_duration:
raise ValueError("""Segment duration value is too large \
given the media duration""")
# a lock to wait wait for gstreamer thread to be ready
self.discovered_cond = threading.Condition(threading.Lock())
self.discovered = False
# the output data format we want
if blocksize:
self.output_blocksize = blocksize
if samplerate:
self.output_samplerate = int(samplerate)
if channels:
self.output_channels = int(channels)
if self.is_segment:
# Create the pipe with Gnonlin gnlurisource
self.pipe = ''' gnlurisource name=src uri={uri}
start=0
duration={uri_duration}
media-start={uri_start}
media-duration={uri_duration}
! audioconvert name=audioconvert
! audioresample
! appsink name=sink sync=False async=True
'''.format(uri=self.uri,
uri_start=np.uint64(
round(self.uri_start * gst.SECOND)),
uri_duration=np.int64(round(self.uri_duration * gst.SECOND)))
# convert uri_start and uri_duration to
# nanoseconds
else:
# Create the pipe with standard Gstreamer uridecodebin
self.pipe = ''' uridecodebin name=src uri={uri}
! audioconvert name=audioconvert
! audioresample
! appsink name=sink sync=False async=True
'''.format(uri=self.uri)
self.pipeline = gst.parse_launch(self.pipe)
if self.output_channels:
caps_channels = int(self.output_channels)
else:
caps_channels = "[ 1, 2 ]"
if self.output_samplerate:
caps_samplerate = int(self.output_samplerate)
else:
caps_samplerate = "{ 8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000, 96000 }"
sink_caps = gst.Caps("""audio/x-raw-float,
endianness=(int)1234,
channels=(int)%s,
width=(int)32,
rate=(int)%s""" % (caps_channels, caps_samplerate))
self.src = self.pipeline.get_by_name('src')
if not self.is_segment:
self.src.connect("autoplug-continue", self._autoplug_cb)
else:
uridecodebin = self.src.get_by_name('internal-uridecodebin')
uridecodebin.connect("autoplug-continue", self._autoplug_cb)
self.conv = self.pipeline.get_by_name('audioconvert')
self.conv.get_pad("sink").connect("notify::caps", self._notify_caps_cb)
self.sink = self.pipeline.get_by_name('sink')
self.sink.set_property("caps", sink_caps)
self.sink.set_property('max-buffers', GST_APPSINK_MAX_BUFFERS)
self.sink.set_property("drop", False)
self.sink.set_property('emit-signals', True)
self.sink.connect("new-buffer", self._on_new_buffer_cb)
self.bus = self.pipeline.get_bus()
self.bus.add_signal_watch()
self.bus.connect('message', self._on_message_cb)
self.queue = Queue.Queue(QUEUE_SIZE)
self.mainloop = gobject.MainLoop()
self.mainloopthread = MainloopThread(self.mainloop)
self.mainloopthread.start()
#self.mainloopthread = get_loop_thread()
##self.mainloop = self.mainloopthread.mainloop
# start pipeline
self.pipeline.set_state(gst.STATE_PLAYING)
self.discovered_cond.acquire()
while not self.discovered:
# print 'waiting'
self.discovered_cond.wait()
self.discovered_cond.release()
if not hasattr(self, 'input_samplerate'):
if hasattr(self, 'error_msg'):
raise IOError(self.error_msg)
else:
raise IOError('no known audio stream found')
def setup(self, channels=None, samplerate=None, blocksize=None):
self.eod = False
self.last_buffer = None
# a lock to wait wait for gstreamer thread to be ready
self.discovered_cond = threading.Condition(threading.Lock())
self.discovered = False
# the output data format we want
if blocksize:
self.output_blocksize = blocksize
if samplerate:
self.output_samplerate = int(samplerate)
if channels:
self.output_channels = int(channels)
# Create the pipe with standard Gstreamer uridecodbin
self.pipe = '''%s num-buffers=%d name=src
! audioconvert name=audioconvert
! audioresample
! appsink name=sink sync=False async=True
''' % (self.input_src, self.num_buffers)
self.pipeline = gst.parse_launch(self.pipe)
if self.output_channels:
caps_channels = int(self.output_channels)
else:
caps_channels = "[ 1, 2 ]"
if self.output_samplerate:
caps_samplerate = int(self.output_samplerate)
else:
caps_samplerate = "{ 8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000, 96000 }"
sink_caps = gst.Caps("""audio/x-raw-float,
endianness=(int)1234,
channels=(int)%s,
width=(int)32,
rate=(int)%s""" % (caps_channels, caps_samplerate))
self.src = self.pipeline.get_by_name('src')
self.conv = self.pipeline.get_by_name('audioconvert')
self.conv.get_pad("sink").connect("notify::caps", self._notify_caps_cb)
self.sink = self.pipeline.get_by_name('sink')
self.sink.set_property("caps", sink_caps)
self.sink.set_property('max-buffers', GST_APPSINK_MAX_BUFFERS)
self.sink.set_property("drop", False)
self.sink.set_property('emit-signals', True)
self.sink.connect("new-buffer", self._on_new_buffer_cb)
self.bus = self.pipeline.get_bus()
self.bus.add_signal_watch()
self.bus.connect('message', self._on_message_cb)
self.queue = Queue.Queue(QUEUE_SIZE)
self.mainloop = gobject.MainLoop()
self.mainloopthread = MainloopThread(self.mainloop)
self.mainloopthread.start()
#self.mainloopthread = get_loop_thread()
##self.mainloop = self.mainloopthread.mainloop
# start pipeline
self.pipeline.set_state(gst.STATE_PLAYING)
self.discovered_cond.acquire()
while not self.discovered:
# print 'waiting'
self.discovered_cond.wait()
self.discovered_cond.release()
if not hasattr(self, 'input_samplerate'):
if hasattr(self, 'error_msg'):
raise IOError(self.error_msg)
else:
raise IOError('no known audio stream found')