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
|
# GNU MediaGoblin -- federated, autonomous media hosting
# Copyright (C) 2013 MediaGoblin contributors. See AUTHORS.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from contextlib import contextmanager
import tempfile
import gi
gi.require_version('Gst', '1.0')
from gi.repository import Gst
Gst.init(None)
@contextmanager
def create_av(make_video=False, make_audio=False):
'creates audio/video in `path`, throws AssertionError on any error'
media = tempfile.NamedTemporaryFile(suffix='.ogg')
pipeline = Gst.Pipeline()
mux = Gst.ElementFactory.make('oggmux', 'mux')
pipeline.add(mux)
if make_video:
video_src = Gst.ElementFactory.make('videotestsrc', 'video_src')
video_src.set_property('num-buffers', 20)
video_enc = Gst.ElementFactory.make('theoraenc', 'video_enc')
pipeline.add(video_src)
pipeline.add(video_enc)
assert video_src.link(video_enc)
assert video_enc.link(mux)
if make_audio:
audio_src = Gst.ElementFactory.make('audiotestsrc', 'audio_src')
audio_src.set_property('num-buffers', 20)
audio_enc = Gst.ElementFactory.make('vorbisenc', 'audio_enc')
pipeline.add(audio_src)
pipeline.add(audio_enc)
assert audio_src.link(audio_enc)
assert audio_enc.link(mux)
sink = Gst.ElementFactory.make('filesink', 'sink')
sink.set_property('location', media.name)
pipeline.add(sink)
mux.link(sink)
pipeline.set_state(Gst.State.PLAYING)
state = pipeline.get_state(Gst.SECOND)
assert state[0] == Gst.StateChangeReturn.SUCCESS
bus = pipeline.get_bus()
message = bus.timed_pop_filtered(
Gst.SECOND, # one second should be more than enough for 50-buf vid
Gst.MessageType.ERROR | Gst.MessageType.EOS)
assert message.type == Gst.MessageType.EOS
pipeline.set_state(Gst.State.NULL)
yield media.name
|
