# encoding: UTF-8
# api: streamtuner2
# title: Filter Bitrate
# description: Cleans out low-quality entries from all station lists.
# version: 0.2
# type: filter
# category: audio
# config:
# { name: min_bitrate_mp3, value: 32, type: select, select: "32=32kbit/s|48=48kbit/s|64=64kbit/s|80=80kbit/s|96=96kbit/s|112=112kbit/s|128=128kbit/s|144=144kbit/s|160=160kbit/s", description: Filter MP3 streams with lesser audio quality. }
# { name: min_bitrate_ogg, value: 48, type: select, select: "32=32kbit/s|48=48kbit/s|64=64kbit/s|80=80kbit/s|96=96kbit/s|112=112kbit/s|128=128kbit/s|144=144kbit/s|160=160kbit/s", description: Minimum bitrate for Ogg Vorbis and AAC. }
# priority: optional
# hooks: postprocess_filters
#
# Plugin that filters radio stations on bitrate (audio quality).
# Anything below 64 kbit/s often sounds awful for MP3 streams.
# While AAC or Ogg Vorbis might still be acceptable sometimes.
#
# This functionality was previously just implemented for the Xiph
# plugin. It's now available as generic filter for all channels.
# Beware that some channels provide more entries with low bitrates,
# thus might appear completely empty.
from config import *
from channels import GenericChannel
# Filter streams by bitrate
class filter_bitrate(object):
meta = plugin_meta()
module = __name__
# Hijack postprocessing filters in stream_update handler
def __init__(self, parent):
GenericChannel.postprocess_filters.append(self.filter_rows)
# Filter row on bitrate
def filter_rows(self, row, channel):
bits = int(row.get("bitrate", 0))
if bits <= 10:
return True
elif row.get("format", channel.audioformat) in ("audio/ogg", "audio/aac", "audio/aacp"):
return bits >= int(conf.min_bitrate_ogg)
else:
return bits >= int(conf.min_bitrate_mp3)