3 # Timeline - very simple GES timeline wrapper
5 # Copyright (C) 2016 Antonio Ospite <ao2@ao2.it>
7 # This program is free software: you can redistribute it and/or modify
8 # it under the terms of the GNU General Public License as published by
9 # the Free Software Foundation, either version 3 of the License, or
10 # (at your option) any later version.
12 # This program is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
22 gi.require_version('Gst', '1.0')
23 from gi.repository import Gst
26 gi.require_version('GES', '1.0')
27 from gi.repository import GES
30 from .Player import Player
32 TITLE_BACKGROUND = 0xFF000000
33 TITLE_COLOR = 0xFFFFFFFF
34 TITLE_OUTLINE_COLOR = 0x00000000
35 TITLE_FONT_DESC = "Georgia, 24"
37 class Timeline(object):
39 self.project = GES.Project(extractable_type=GES.Timeline)
40 self.timeline = GES.Asset.extract(self.project)
42 audio_track = GES.AudioTrack.new()
43 video_track = GES.VideoTrack.new()
45 self.timeline.add_track(audio_track)
46 self.timeline.add_track(video_track)
48 self.layer = self.timeline.append_layer()
50 ges_pipeline = GES.Pipeline()
51 ges_pipeline.set_timeline(self.timeline)
52 self.player = Player(ges_pipeline)
54 def add_title_clip(self, text, start_time, duration):
55 title_clip = GES.TitleClip()
56 title_clip.set_start(start_time * Gst.SECOND)
57 title_clip.set_duration(duration * Gst.SECOND)
58 self.layer.add_clip(title_clip)
60 # Now that the clip is inserted in the timeline, it has a source which
61 # can be used to set its properties. (comment taken from Pitivi)
62 title_source = title_clip.find_track_element(None, GES.TitleSource)
63 title_source.set_child_property("text", text)
64 title_source.set_child_property("background", TITLE_BACKGROUND)
65 title_source.set_child_property("color", TITLE_COLOR)
66 title_source.set_child_property("outline-color", TITLE_OUTLINE_COLOR)
67 title_source.set_child_property("font-desc", TITLE_FONT_DESC)
68 title_source.set_child_property("halignment", GES.TextVAlign.ABSOLUTE)
69 title_source.set_child_property("valignment", GES.TextHAlign.ABSOLUTE)
71 def add_clip(self, clip_path, start_time, duration):
72 clip_uri = Gst.filename_to_uri(clip_path)
73 asset = GES.UriClipAsset.request_sync(clip_uri)
74 self.layer.add_asset(asset, start_time * Gst.SECOND, 0,
75 duration * Gst.SECOND, GES.TrackType.UNKNOWN)
77 def add_layer_clip(self, clip_path, start_time, duration):
78 """Add a clip on its own layer"""
79 clip_uri = Gst.filename_to_uri(clip_path)
80 asset = GES.UriClipAsset.request_sync(clip_uri)
81 new_layer = self.timeline.append_layer()
82 new_layer.add_asset(asset, start_time * Gst.SECOND, 0,
83 duration * Gst.SECOND, GES.TrackType.UNKNOWN)
86 self.timeline.commit()
93 uri = Gst.filename_to_uri(path)
94 self.project.save(self.timeline, uri, None, False)