forked from rc/aircox
159 lines
4.4 KiB
Python
159 lines
4.4 KiB
Python
from enum import IntEnum
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import os
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from django.db import models
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from django.db.models import Q
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from django.utils.translation import ugettext_lazy as _
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from filer.fields.image import FilerImageField
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from .. import settings
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__all__ = ['Station', 'StationQuerySet', 'Port']
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class StationQuerySet(models.QuerySet):
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def default(self, station=None):
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"""
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Return station model instance, using defaults or
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given one.
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"""
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if station is None:
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return self.order_by('-default', 'pk').first()
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return self.filter(pk=station).first()
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class Station(models.Model):
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"""
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Represents a radio station, to which multiple programs are attached
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and that is used as the top object for everything.
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A Station holds controllers for the audio stream generation too.
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Theses are set up when needed (at the first access to these elements)
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then cached.
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"""
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name = models.CharField(_('name'), max_length=64)
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slug = models.SlugField(_('slug'), max_length=64, unique=True)
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# FIXME: remove - should be decided only by Streamer controller + settings
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path = models.CharField(
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_('path'),
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help_text=_('path to the working directory'),
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max_length=256,
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blank=True,
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)
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default = models.BooleanField(
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_('default station'),
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default=True,
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help_text=_('if checked, this station is used as the main one')
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)
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logo = FilerImageField(
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on_delete=models.SET_NULL, null=True, blank=True,
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verbose_name=_('Logo'),
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)
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hosts = models.TextField(
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_("website's urls"), max_length=512, null=True, blank=True,
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help_text=_('specify one url per line')
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)
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objects = StationQuerySet.as_manager()
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def __str__(self):
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return self.name
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def save(self, make_sources=True, *args, **kwargs):
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if not self.path:
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self.path = os.path.join(settings.AIRCOX_CONTROLLERS_WORKING_DIR,
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self.slug.replace('-', '_'))
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if self.default:
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qs = Station.objects.filter(default=True)
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if self.pk is not None:
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qs = qs.exclude(pk=self.pk)
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qs.update(default=False)
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super().save(*args, **kwargs)
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class Port(models.Model):
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"""
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Represent an audio input/output for the audio stream
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generation.
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You might want to take a look to LiquidSoap's documentation
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for the options available for each kind of input/output.
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Some port types may be not available depending on the
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direction of the port.
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"""
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class Direction(IntEnum):
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input = 0x00
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output = 0x01
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class Type(IntEnum):
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jack = 0x00
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alsa = 0x01
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pulseaudio = 0x02
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icecast = 0x03
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http = 0x04
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https = 0x05
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file = 0x06
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station = models.ForeignKey(
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Station,
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verbose_name=_('station'),
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on_delete=models.CASCADE,
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)
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direction = models.SmallIntegerField(
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_('direction'),
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choices=[(int(y), _(x)) for x, y in Direction.__members__.items()],
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)
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type = models.SmallIntegerField(
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_('type'),
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# we don't translate the names since it is project names.
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choices=[(int(y), x) for x, y in Type.__members__.items()],
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)
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active = models.BooleanField(
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_('active'),
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default=True,
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help_text=_('this port is active')
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)
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settings = models.TextField(
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_('port settings'),
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help_text=_('list of comma separated params available; '
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'this is put in the output config file as raw code; '
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'plugin related'),
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blank=True, null=True
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)
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def is_valid_type(self):
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"""
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Return True if the type is available for the given direction.
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"""
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if self.direction == self.Direction.input:
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return self.type not in (
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self.Type.icecast, self.Type.file
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)
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return self.type not in (
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self.Type.http, self.Type.https
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)
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def save(self, *args, **kwargs):
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if not self.is_valid_type():
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raise ValueError(
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"port type is not allowed with the given port direction"
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)
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return super().save(*args, **kwargs)
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def __str__(self):
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return "{direction}: {type} #{id}".format(
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direction=self.get_direction_display(),
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type=self.get_type_display(),
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id=self.pk or ''
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)
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