voctocore/lib/commands.py



#!/usr/bin/python3
import logging

from lib.config import Config
from lib.videomix import CompositeModes

class ControlServerCommands():
    log = logging.getLogger('ControlServerCommands')

    pipeline = None
    vnames = []

    def __init__(self, pipeline):
        self.pipeline = pipeline
        self.sources = Config.getlist('mix', 'sources')

    def decodeSourceName(self, src_name_or_id):
        if isinstance(src_name_or_id, str):
            try:
                return self.sources.index(src_name_or_id)
            except Exception as e:
                raise IndexError("source %s unknown" % src_name_or_id)

        if src_name_or_id < 0 or src_name_or_id >= len(self.sources):
            raise IndexError("source %s unknown" % src_name_or_id)


    def set_video_a(self, src_name_or_id):
        src_id = self.decodeSourceName(src_name_or_id)
        self.pipeline.vmix.setVideoA(src_id)
        return True

    def set_video_b(self, src_name_or_id):
        src_id = self.decodeSourceName(src_name_or_id)
        self.pipeline.vmix.setVideoB(src_id)
        return True

    def set_composite_mode(self, composite_mode):
        try:
            mode = CompositeModes[composite_mode]
        except KeyError as e:
            raise KeyError("composite-mode %s unknown" % composite_mode)

        self.pipeline.vmix.setCompositeMode(mode)
        return True