- #!/usr/bin/python3
- import time, logging
- from gi.repository import GLib, Gst
- from lib.config import Config
- class VideoMix(object):
- log = logging.getLogger('VideoMix')
- mixerpads = []
- def __init__(self):
- super().__init__()
- self.mixer = Gst.ElementFactory.make('videomixer', 'mixer')
- self.scale = Gst.ElementFactory.make('videoscale', 'scale')
- self.conv = Gst.ElementFactory.make('videoconvert', 'conv')
- self.add(self.mixer)
- self.add(self.scale)
- self.add(self.conv)
- caps = Gst.Caps.from_string(Config.get('mix', 'outputcaps'))
- self.mixer.link_filtered(self.scale, caps)
- self.scale.link(self.conv)
- self.add_pad(
- Gst.GhostPad.new('src', self.conv.get_static_pad('src'))
- )
- def request_mixer_pad(self):
- mixerpad = self.mixer.get_request_pad('sink_%u')
- self.mixerpads.append(mixerpad)
- mixerpad.set_property('alpha', 1)
- self.log.info('requested mixerpad %u (named %s)', len(self.mixerpads) - 1, mixerpad.get_name())
- ghostpad = Gst.GhostPad.new(mixerpad.get_name(), mixerpad)
- self.add_pad(ghostpad)
- return ghostpad
- def set_active(self, target):
- self.log.info('setting videosource %u active, disabling other', target)
- for idx, mixerpad in enumerate(self.mixerpads):
- mixerpad.set_property('alpha', int(target == idx))
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