def extractAudioTrack (device, track_number, sink, extra = None):
"""
Exctracts an audio track from a certain device. The 'extra' field is used
to send extra properties to the 'cdparanoia' element.
"""
bin = gst.parse_launch ("cdparanoia ! wavenc")
bin.set_state (gst.STATE_PAUSED)
TRACK_FORMAT = gst.format_get_by_nick ("track")
assert TRACK_FORMAT != 0
PLAY_TRACK = TRACK_FORMAT | gst.SEEK_METHOD_SET | gst.SEEK_FLAG_FLUSH
elements = bin.get_list ()
cdparanoia = elements[0]
wavenc = elements[-1]
cdparanoia.set_property ("device", device)
if extra is not None:
for key, value in extra.iteritems ():
cdparanoia.set_property (key, value)
src = cdparanoia.get_pad ("src")
evt = gst.event_new_segment_seek (PLAY_TRACK, track_number, track_number + 1)
src.send_event (evt)
bin.add (sink)
wavenc.link (sink)
return GstOperation(sink, bin)
def extractAudioTrack (device, track_number, sink, extra = None):
"""
Exctracts an audio track from a certain device. The 'extra' field is used
to send extra properties to the 'cdparanoia' element.
"""
bin = gst.parse_launch ("cdparanoia ! wavenc")
bin.set_state (gst.STATE_PAUSED)
TRACK_FORMAT = gst.format_get_by_nick ("track")
assert TRACK_FORMAT != 0
PLAY_TRACK = TRACK_FORMAT | gst.SEEK_METHOD_SET | gst.SEEK_FLAG_FLUSH
elements = bin.get_list ()
cdparanoia = elements[0]
wavenc = elements[-1]
cdparanoia.set_property ("device", device)
if extra is not None:
for key, value in extra.iteritems ():
cdparanoia.set_property (key, value)
src = cdparanoia.get_pad ("src")
evt = gst.event_new_segment_seek (PLAY_TRACK, track_number, track_number + 1)
src.send_event (evt)
bin.add (sink)
wavenc.link (sink)
return GstOperation(sink, bin)
def ripTrack(device, trackNo, filename, callbackProgress, callbackComplete):
cdp = gst.element_factory_make("cdparanoia", "ripper")
cdp.set_property("device", device)
cdp.set_property("paranoia-mode", 4)
cdp.set_property("abort-on-skip", True)
track_format = gst.format_get_by_nick("track")
src_pad = cdp.get_pad("src")
flac = gst.element_factory_make("flacenc", "encoder")
sink = gst.element_factory_make("filesink", "sink")
sink.set_property("location", filename)
bin = gst.Pipeline()
bin.add_many(cdp, flac, sink)
gst.element_link_many(cdp, flac, sink)
bin.set_state(gst.STATE_PAUSED)
seek = gst.event_new_segment_seek(
track_format | gst.SEEK_METHOD_SET | gst.SEEK_FLAG_FLUSH, trackNo - 1,
trackNo)
src_pad.send_event(seek)
res = bin.set_state(gst.STATE_PLAYING)
lastsecs = -1
while bin.iterate():
nanos = src_pad.query(gst.QUERY_POSITION, gst.FORMAT_TIME)
length = src_pad.query(gst.QUERY_TOTAL, gst.FORMAT_TIME)
secs = nanos / gst.SECOND
lensecs = length / gst.SECOND
if secs <> lastsecs and secs > 0:
#print "secs %d, lensecs %d, rate %f" % (secs,lensecs, rate)
callbackProgress(trackNo, secs, lensecs)
lastsecs = secs
res = bin.set_state(gst.STATE_NULL)
callbackComplete(trackNo)
def ripTrack(device, trackNo, filename, callbackProgress, callbackComplete):
cdp = gst.element_factory_make("cdparanoia", "ripper")
cdp.set_property("device", device)
cdp.set_property("paranoia-mode", 4)
cdp.set_property("abort-on-skip", True)
track_format = gst.format_get_by_nick("track")
src_pad = cdp.get_pad("src")
flac = gst.element_factory_make("flacenc", "encoder")
sink = gst.element_factory_make("filesink", "sink")
sink.set_property("location", filename)
bin = gst.Pipeline()
bin.add_many(cdp, flac, sink)
gst.element_link_many(cdp, flac, sink)
bin.set_state(gst.STATE_PAUSED)
seek = gst.event_new_segment_seek(track_format | gst.SEEK_METHOD_SET | gst.SEEK_FLAG_FLUSH,
trackNo - 1, trackNo)
src_pad.send_event(seek)
res = bin.set_state(gst.STATE_PLAYING);
lastsecs = -1
while bin.iterate():
nanos = src_pad.query(gst.QUERY_POSITION, gst.FORMAT_TIME)
length = src_pad.query(gst.QUERY_TOTAL, gst.FORMAT_TIME)
secs = nanos / gst.SECOND
lensecs = length / gst.SECOND
if secs <> lastsecs and secs > 0:
#print "secs %d, lensecs %d, rate %f" % (secs,lensecs, rate)
callbackProgress(trackNo, secs, lensecs)
lastsecs = secs
res = bin.set_state(gst.STATE_NULL)
callbackComplete(trackNo)
