/usr/lib/pitivi/python/pitivi/elements/extractionsink.py is in pitivi 0.15.1-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 | # PiTiVi , Non-linear video editor
#
# pitivi/elements/extractionsink.py
#
# Copyright (c) 2005, Edward Hervey <bilboed@bilboed.com>
# Copyright (c) 2011, Benjamin M. Schwartz <bens@alum.mit.edu>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this program; if not, write to the
# Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
# Boston, MA 02110-1301, USA.
"""
Extract audio samples without storing the whole waveform in memory
"""
import array
import gobject
gobject.threads_init()
import gst
from pitivi.utils import native_endianness, call_false
class ExtractionSink(gst.BaseSink):
"""
Passes audio data directly to a provided L{Extractee}
"""
caps = gst.Caps(
"audio/x-raw-float, width=(int) 32, "
"endianness = (int) %s, "
"channels = (int) 1,"
"rate = (int) [1, 96000]"
% native_endianness)
__gsttemplates__ = (
gst.PadTemplate(
"sink",
gst.PAD_SINK,
gst.PAD_ALWAYS,
caps),)
def __init__(self):
gst.BaseSink.__init__(self)
self.props.sync = False
self.rate = 0
self.channels = 0
self.reset()
self._cb = None
def set_extractee(self, extractee):
self.extractee = extractee
def set_stopped_cb(self, cb):
self._cb = cb
def reset(self):
self.samples = array.array('f')
self.extractee = None
def do_set_caps(self, caps):
if not caps[0].get_name() == "audio/x-raw-float":
return False
self.rate = caps[0]["rate"]
self.channels = caps[0]["channels"]
return True
def do_render(self, buf):
if self.extractee is not None:
self.extractee.receive(array.array('f', buf.data))
return gst.FLOW_OK
def do_preroll(self, buf):
return gst.FLOW_OK
def do_event(self, ev):
self.info("Got event of type %s" % ev.type)
if ev.type == gst.EVENT_EOS:
if self._cb:
gobject.idle_add(call_false, self._cb)
return gst.FLOW_OK
gobject.type_register(ExtractionSink)
|