163 lines
4.8 KiB
Python
163 lines
4.8 KiB
Python
# -*- Mode: Python; test-case-name: whipper.test.test_common_encode -*-
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# vi:si:et:sw=4:sts=4:ts=4
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# Copyright (C) 2009 Thomas Vander Stichele
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# This file is part of whipper.
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#
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# whipper is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# whipper is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with whipper. If not, see <http://www.gnu.org/licenses/>.
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from mutagen.flac import FLAC, Picture
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from mutagen.id3 import PictureType
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from whipper.extern.task import task
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from whipper.program import sox
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from whipper.program import flac
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import logging
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logger = logging.getLogger(__name__)
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class SoxPeakTask(task.Task):
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description = 'Calculating peak level'
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def __init__(self, track_path):
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self.track_path = track_path
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self.peak = None
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def start(self, runner):
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task.Task.start(self, runner)
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self.schedule(0.0, self._sox_peak)
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def _sox_peak(self):
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self.peak = sox.peak_level(self.track_path)
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self.stop()
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class FlacEncodeTask(task.Task):
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description = 'Encoding to FLAC'
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def __init__(self, track_path, track_out_path, what="track"):
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self.track_path = track_path
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self.track_out_path = track_out_path
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self.new_path = None
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self.description = 'Encoding %s to FLAC' % what
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def start(self, runner):
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task.Task.start(self, runner)
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self.schedule(0.0, self._flac_encode)
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def _flac_encode(self):
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flac.encode(self.track_path, self.track_out_path)
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self.stop()
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class TaggingTask(task.Task):
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# TODO: Wizzup: Do we really want this as 'Task'...?
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# I only made it a task for now because that it's easier to integrate in
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# program/cdparanoia.py - where whipper currently does the tagging.
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# We should just move the tagging to a more sensible place.
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description = 'Writing tags to FLAC'
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def __init__(self, track_path, tags):
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self.track_path = track_path
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self.tags = tags
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def start(self, runner):
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task.Task.start(self, runner)
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self.schedule(0.0, self._tag)
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def _tag(self):
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w = FLAC(self.track_path)
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for k, v in list(self.tags.items()):
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w[k] = v
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w.save()
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self.stop()
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class EmbedPictureTask(task.Task):
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description = 'Embed picture to FLAC'
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def __init__(self, track_path, cover_art_path):
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self.track_path = track_path
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self.cover_art_path = cover_art_path
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def start(self, runner):
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task.Task.start(self, runner)
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self.schedule(0.0, self._embed_picture)
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@staticmethod
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def _make_flac_picture(cover_art_filename):
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"""
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Given a path to a jpg/png file, return a FLAC picture for embedding.
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The embedding will be performed using the mutagen module.
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:param cover_art_filename: path to cover art image file
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:type cover_art_filename: str
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:returns: a valid FLAC picture for embedding
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:rtype: mutagen.flac.Picture or None
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"""
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if not cover_art_filename:
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return
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from PIL import Image
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im = Image.open(cover_art_filename)
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# NOTE: the cover art thumbnails we're getting from the Cover Art
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# Archive should be always in the JPEG format: this check is currently
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# useless but will leave it here to better handle unexpected formats.
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if im.format == 'JPEG':
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mime = 'image/jpeg'
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elif im.format == 'PNG':
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mime = 'image/png'
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else:
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# we only support png and jpeg
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logger.warning("no cover art will be added because the fetched "
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"image format is unsupported")
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return
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pic = Picture()
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with open(cover_art_filename, 'rb') as f:
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pic.data = f.read()
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pic.type = PictureType.COVER_FRONT
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pic.mime = mime
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pic.width, pic.height = im.size
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if im.mode not in ('P', 'RGB', 'SRGB'):
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logger.warning("no cover art will be added because the fetched "
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"image mode is unsupported")
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return
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return pic
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def _embed_picture(self):
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"""
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Get flac picture generated from mutagen.flac.Picture then embed
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it to given track if the flac picture exists.
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"""
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flac_pic = self._make_flac_picture(self.cover_art_path)
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if flac_pic:
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w = FLAC(self.track_path)
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w.add_picture(flac_pic)
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w.save()
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self.stop()
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