sintonia/playout/libretime_playout/liquidsoap/entrypoint.py

71 lines
2.1 KiB
Python

from pathlib import Path
from typing import Optional, Tuple
from jinja2 import Template
from libretime_shared.config import AudioFormat, IcecastOutput, SystemOutput
from ..config import Config
from .models import Info, StreamPreferences
here = Path(__file__).parent
entrypoint_template_path = here / "entrypoint.liq.j2"
entrypoint_template = Template(
entrypoint_template_path.read_text(encoding="utf-8"),
keep_trailing_newline=True,
)
# Liquidsoap has 4 hardcoded output stream set of variables, so we need to
# fill the missing stream outputs with placeholders so Liquidsoap does
# not fail with missing variables in the entrypoint.
_icecast_placeholder = IcecastOutput(
enabled=False,
mount="",
source_password="",
audio=dict(format="ogg", bitrate=256),
)
_system_placeholder = SystemOutput()
def generate_entrypoint(
entrypoint_filepath: Path,
log_filepath: Optional[Path],
config: Config,
preferences: StreamPreferences,
info: Info,
version: Tuple[int, int, int],
):
paths = {}
paths["auth_filepath"] = here / "liquidsoap_auth.py"
paths["lib_filepath"] = here / f"{version[0]}.{version[1]}/ls_script.liq"
if log_filepath is not None:
paths["log_filepath"] = log_filepath.resolve()
config = config.copy()
missing_outputs = [_icecast_placeholder] * (4 - len(config.stream.outputs.merged))
config.stream.outputs.icecast.extend(missing_outputs)
if not config.stream.outputs.system:
config.stream.outputs.system.append(_system_placeholder)
# Global icecast_vorbis_metadata until it is
# handled per output
icecast_vorbis_metadata = any(
o.enabled and o.audio.format == AudioFormat.OGG and o.audio.enable_metadata # type: ignore
for o in config.stream.outputs.icecast
)
entrypoint_filepath.write_text(
entrypoint_template.render(
config=config,
preferences=preferences,
info=info,
paths=paths,
version=version,
icecast_vorbis_metadata=icecast_vorbis_metadata,
),
encoding="utf-8",
)