gstreamer/subprojects/gst-editing-services/docs/libs/document-children-props.py

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#!/usr/bin/env python3
"""
Simple script to update the children properties information for
GESTrackElement-s that add children properties all the time
"""
import gi
import os
import sys
import textwrap
gi.require_version("Gst", "1.0")
gi.require_version("GObject", "2.0")
gi.require_version("GES", "1.0")
from gi.repository import Gst, GES, GObject
overrides = {
"GstFramePositioner": False,
"GstBaseTextOverlay": "timeoverlay",
"GstVideoDirection": "videoflip",
"GESVideoTestSource": "GESVideoTestSource",
"GESVideoTransition": "GESVideoTransition",
}
if __name__ == "__main__":
Gst.init(None)
GES.init()
os.chdir(os.path.realpath(os.path.dirname(__file__)))
tl = GES.Timeline.new_audio_video()
layer = tl.append_layer()
elements = []
def add_clip(c, add=True, override_name=None):
c.props.duration = Gst.SECOND
c.props.start = layer.get_duration()
layer.add_clip(c)
if add:
elements.extend(c.children)
else:
if override_name:
elements.append((c, override_name))
else:
elements.append(c)
add_clip(GES.UriClipAsset.request_sync(Gst.filename_to_uri(os.path.join("../../", "tests/check/assets/audio_video.ogg"))).extract())
add_clip(GES.TestClip.new())
add_clip(GES.TitleClip.new())
add_clip(GES.SourceClip.new_time_overlay(), False, "GESTimeOverlaySourceClip")
add_clip(GES.TransitionClip.new_for_nick("crossfade"), False)
for element in elements:
if isinstance(element, tuple):
element, gtype = element
else:
gtype = element.__gtype__.name
print(gtype)
with open(gtype + '-children-props.md', 'w') as f:
for prop in GES.TimelineElement.list_children_properties(element):
prefix = '#### `%s`\n\n' % (prop.name)
prefix_len = len(prefix)
lines = textwrap.wrap(prop.blurb, width=80)
doc = prefix + lines[0]
if GObject.type_is_a(prop, GObject.ParamSpecEnum.__gtype__):
lines += ["", "Valid values:"]
for value in prop.enum_class.__enum_values__.values():
lines.append(" - **%s** (%d) %s" % (value.value_name,
int(value), value.value_nick))
else:
lines += ["", "Value type: #" + prop.value_type.name]
typename = overrides.get(prop.owner_type.name, None)
if typename is not False:
if typename is None:
if GObject.type_is_a(prop.owner_type, Gst.Element):
typename = GObject.new(prop.owner_type).get_factory().get_name()
lines += ["", "See #%s:%s" % (typename, prop.name)]
if len(lines) > 1:
doc += '\n'
doc += '\n'.join(lines[1:])
print(doc + "\n", file=f)