494 lines
15 KiB
Python
494 lines
15 KiB
Python
# -*- Mode: Python; test-case-name: morituri.test.test_common_encode -*-
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# vi:si:et:sw=4:sts=4:ts=4
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# Morituri - for those about to RIP
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# Copyright (C) 2009 Thomas Vander Stichele
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# This file is part of morituri.
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#
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# morituri 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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# morituri 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 morituri. If not, see <http://www.gnu.org/licenses/>.
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import math
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import os
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import shutil
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import tempfile
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from morituri.common import common, log
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from morituri.common import gstreamer as cgstreamer
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from morituri.common import task as ctask
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from morituri.extern.task import task, gstreamer
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class Profile(object):
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name = None
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extension = None
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pipeline = None
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losless = None
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def test(self):
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"""
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Test if this profile will work.
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Can check for elements, ...
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"""
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pass
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class FlacProfile(Profile):
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name = 'flac'
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extension = 'flac'
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pipeline = 'flacenc name=tagger quality=8'
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lossless = True
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# FIXME: we should do something better than just printing ERRORS
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def test(self):
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# here to avoid import gst eating our options
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import gst
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plugin = gst.registry_get_default().find_plugin('flac')
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if not plugin:
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print 'ERROR: cannot find flac plugin'
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return False
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versionTuple = tuple([int(x) for x in plugin.get_version().split('.')])
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if len(versionTuple) < 4:
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versionTuple = versionTuple + (0, )
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if versionTuple > (0, 10, 9, 0) and versionTuple <= (0, 10, 15, 0):
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print 'ERROR: flacenc between 0.10.9 and 0.10.15 has a bug'
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return False
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return True
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# FIXME: ffenc_alac does not have merge_tags
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class AlacProfile(Profile):
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name = 'alac'
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extension = 'alac'
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pipeline = 'ffenc_alac'
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lossless = True
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# FIXME: wavenc does not have merge_tags
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class WavProfile(Profile):
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name = 'wav'
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extension = 'wav'
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pipeline = 'wavenc'
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lossless = True
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class WavpackProfile(Profile):
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name = 'wavpack'
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extension = 'wv'
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pipeline = 'wavpackenc bitrate=0 name=tagger'
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lossless = True
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class MP3Profile(Profile):
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name = 'mp3'
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extension = 'mp3'
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pipeline = 'lame name=tagger quality=0 ! id3v2mux'
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lossless = False
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class MP3VBRProfile(Profile):
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name = 'mp3vbr'
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extension = 'mp3'
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pipeline = 'lame name=tagger ' \
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'vbr-quality=0 vbr=new vbr-mean-bitrate=192 ! ' \
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'id3v2mux'
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lossless = False
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class VorbisProfile(Profile):
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name = 'vorbis'
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extension = 'oga'
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pipeline = 'audioconvert ! vorbisenc name=tagger ! oggmux'
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lossless = False
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PROFILES = {
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'wav': WavProfile,
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'flac': FlacProfile,
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'alac': AlacProfile,
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'wavpack': WavpackProfile,
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}
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LOSSY_PROFILES = {
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'mp3': MP3Profile,
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'mp3vbr': MP3VBRProfile,
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'vorbis': VorbisProfile,
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}
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ALL_PROFILES = PROFILES.copy()
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ALL_PROFILES.update(LOSSY_PROFILES)
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class EncodeTask(ctask.GstPipelineTask):
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"""
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I am a task that encodes a .wav file.
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I set tags too.
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I also calculate the peak level of the track.
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@param peak: the peak volume, from 0.0 to 1.0. This is the sqrt of the
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peak power.
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@type peak: float
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"""
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logCategory = 'EncodeTask'
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description = 'Encoding'
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peak = None
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def __init__(self, inpath, outpath, profile, taglist=None, what="track"):
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"""
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@param profile: encoding profile
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@type profile: L{Profile}
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"""
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assert type(inpath) is unicode, "inpath %r is not unicode" % inpath
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assert type(outpath) is unicode, \
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"outpath %r is not unicode" % outpath
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self._inpath = inpath
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self._outpath = outpath
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self._taglist = taglist
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self._level = None
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self._peakdB = None
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self._profile = profile
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self.description = "Encoding %s" % what
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self._profile.test()
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cgstreamer.removeAudioParsers()
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def getPipelineDesc(self):
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return '''
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filesrc location="%s" !
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decodebin name=decoder !
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audio/x-raw-int,width=16,depth=16,channels=2 !
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level name=level !
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%s ! identity name=identity !
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filesink location="%s" name=sink''' % (
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gstreamer.quoteParse(self._inpath).encode('utf-8'),
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self._profile.pipeline,
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gstreamer.quoteParse(self._outpath).encode('utf-8'))
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def parsed(self):
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tagger = self.pipeline.get_by_name('tagger')
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# set tags
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if tagger and self._taglist:
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# FIXME: under which conditions do we not have merge_tags ?
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# See for example comment saying wavenc did not have it.
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try:
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tagger.merge_tags(self._taglist, self.gst.TAG_MERGE_APPEND)
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except AttributeError, e:
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self.warning('Could not merge tags: %r',
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log.getExceptionMessage(e))
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def paused(self):
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# get length
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identity = self.pipeline.get_by_name('identity')
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self.debug('query duration')
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try:
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length, qformat = identity.query_duration(self.gst.FORMAT_DEFAULT)
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except self.gst.QueryError, e:
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self.setException(e)
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self.stop()
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return
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# wavparse 0.10.14 returns in bytes
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if qformat == self.gst.FORMAT_BYTES:
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self.debug('query returned in BYTES format')
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length /= 4
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self.debug('total length: %r', length)
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self._length = length
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duration = None
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try:
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duration, qformat = identity.query_duration(self.gst.FORMAT_TIME)
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except self.gst.QueryError, e:
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self.debug('Could not query duration')
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self._duration = duration
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# set up level callbacks
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# FIXME: publicize bus and reuse it instead of regetting and adding ?
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bus = self.pipeline.get_bus()
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bus.add_signal_watch()
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bus.connect('message::element', self._message_element_cb)
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self._level = self.pipeline.get_by_name('level')
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# set an interval that is smaller than the duration
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# FIXME: check level and make sure it emits level up to the last
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# sample, even if input is small
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interval = 1000000000L
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if interval < duration:
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interval = duration / 2
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self._level.set_property('interval', interval)
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# add a probe so we can track progress
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# we connect to level because this gives us offset in samples
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srcpad = self._level.get_static_pad('src')
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self.gst.debug('adding srcpad buffer probe to %r' % srcpad)
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ret = srcpad.add_buffer_probe(self._probe_handler)
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self.gst.debug('added srcpad buffer probe to %r: %r' % (srcpad, ret))
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def _probe_handler(self, pad, buffer):
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# update progress based on buffer offset (expected to be in samples)
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# versus length in samples
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# marshal to main thread
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self.schedule(0, self.setProgress,
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float(buffer.offset) / self._length)
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# don't drop the buffer
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return True
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def bus_eos_cb(self, bus, message):
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self.debug('eos, scheduling stop')
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self.schedule(0, self.stop)
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def _message_element_cb(self, bus, message):
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if message.src != self._level:
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return
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s = message.structure
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if s.get_name() != 'level':
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return
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if self._peakdB is None:
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self._peakdB = s['peak'][0]
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for p in s['peak']:
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if self._peakdB < p:
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self.log('higher peakdB found, now %r', self._peakdB)
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self._peakdB = p
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# FIXME: works around a bug on F-15 where buffer probes don't seem
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# to get triggered to update progress
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if self._duration is not None:
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self.schedule(0, self.setProgress,
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float(s['stream-time'] + s['duration']) / self._duration)
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def stopped(self):
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if self._peakdB is not None:
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self.debug('peakdB %r', self._peakdB)
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self.peak = math.sqrt(math.pow(10, self._peakdB / 10.0))
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else:
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self.warning('No peak found, something went wrong!')
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# workaround for when the file is too short to have volume ?
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# self.peak = 0.0
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class TagReadTask(gstreamer.GstPipelineTask):
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"""
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I am a task that reads tags.
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@ivar taglist: the tag list read from the file.
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@type taglist: L{gst.TagList}
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"""
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logCategory = 'TagReadTask'
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description = 'Reading tags'
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taglist = None
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def __init__(self, path):
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"""
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"""
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assert type(path) is unicode, "path %r is not unicode" % path
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self._path = path
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def getPipelineDesc(self):
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return '''
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filesrc location="%s" !
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decodebin name=decoder !
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fakesink''' % (
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gstreamer.quoteParse(self._path).encode('utf-8'))
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def bus_eos_cb(self, bus, message):
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self.debug('eos, scheduling stop')
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self.schedule(0, self.stop)
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def bus_tag_cb(self, bus, message):
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taglist = message.parse_tag()
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self.taglist = taglist
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class TagWriteTask(task.Task):
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"""
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I am a task that retags an encoded file.
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"""
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logCategory = 'TagWriteTask'
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description = 'Writing tags'
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def __init__(self, inpath, outpath, taglist=None):
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"""
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"""
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assert type(inpath) is unicode, "inpath %r is not unicode" % inpath
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assert type(outpath) is unicode, "outpath %r is not unicode" % outpath
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self._inpath = inpath
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self._outpath = outpath
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self._taglist = taglist
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def start(self, runner):
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task.Task.start(self, runner)
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# here to avoid import gst eating our options
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import gst
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self._pipeline = gst.parse_launch('''
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filesrc location="%s" !
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flactag name=tagger !
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filesink location="%s"''' % (
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gstreamer.quoteParse(self._inpath).encode('utf-8'),
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gstreamer.quoteParse(self._outpath).encode('utf-8')))
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# set tags
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tagger = self._pipeline.get_by_name('tagger')
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if self._taglist:
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tagger.merge_tags(self._taglist, gst.TAG_MERGE_APPEND)
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self.debug('pausing pipeline')
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self._pipeline.set_state(gst.STATE_PAUSED)
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self._pipeline.get_state()
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self.debug('paused pipeline')
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# add eos handling
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bus = self._pipeline.get_bus()
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bus.add_signal_watch()
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bus.connect('message::eos', self._message_eos_cb)
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self.debug('scheduling setting to play')
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# since set_state returns non-False, adding it as timeout_add
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# will repeatedly call it, and block the main loop; so
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# gobject.timeout_add(0L, self._pipeline.set_state,
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# gst.STATE_PLAYING)
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# would not work.
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def play():
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self._pipeline.set_state(gst.STATE_PLAYING)
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return False
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self.schedule(0, play)
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#self._pipeline.set_state(gst.STATE_PLAYING)
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self.debug('scheduled setting to play')
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def _message_eos_cb(self, bus, message):
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self.debug('eos, scheduling stop')
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self.schedule(0, self.stop)
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def stop(self):
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# here to avoid import gst eating our options
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import gst
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self.debug('stopping')
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self.debug('setting state to NULL')
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self._pipeline.set_state(gst.STATE_NULL)
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self.debug('set state to NULL')
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task.Task.stop(self)
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class SafeRetagTask(task.MultiSeparateTask):
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"""
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I am a task that retags an encoded file safely in place.
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First of all, if the new tags are the same as the old ones, it doesn't
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do anything.
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If the tags are not the same, then the file gets retagged, but only
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if the decodes of the original and retagged file checksum the same.
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@ivar changed: True if the tags have changed (and hence an output file is
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generated)
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"""
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logCategory = 'SafeRetagTask'
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description = 'Retagging'
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changed = False
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def __init__(self, path, taglist=None):
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"""
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"""
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assert type(path) is unicode, "path %r is not unicode" % path
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task.MultiSeparateTask.__init__(self)
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self._path = path
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self._taglist = taglist.copy()
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self.tasks = [TagReadTask(path), ]
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def stopped(self, taskk):
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from morituri.common import checksum
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if not taskk.exception:
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# Check if the tags are different or not
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if taskk == self.tasks[0]:
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taglist = taskk.taglist.copy()
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if common.tagListEquals(taglist, self._taglist):
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self.debug('tags are already fine: %r',
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common.tagListToDict(taglist))
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else:
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# need to retag
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self.debug('tags need to be rewritten')
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self.debug('Current tags: %r, new tags: %r',
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common.tagListToDict(taglist),
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common.tagListToDict(self._taglist))
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assert common.tagListToDict(taglist) \
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!= common.tagListToDict(self._taglist)
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self.tasks.append(checksum.CRC32Task(self._path))
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self._fd, self._tmppath = tempfile.mkstemp(
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dir=os.path.dirname(self._path), suffix=u'.morituri')
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self.tasks.append(TagWriteTask(self._path,
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self._tmppath, self._taglist))
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self.tasks.append(checksum.CRC32Task(self._tmppath))
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self.tasks.append(TagReadTask(self._tmppath))
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elif len(self.tasks) > 1 and taskk == self.tasks[4]:
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if common.tagListEquals(self.tasks[4].taglist, self._taglist):
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self.debug('tags written successfully')
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c1 = self.tasks[1].checksum
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c2 = self.tasks[3].checksum
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self.debug('comparing checksums %08x and %08x' % (c1, c2))
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if c1 == c2:
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# data is fine, so we can now move
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# but first, copy original mode to our temporary file
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shutil.copymode(self._path, self._tmppath)
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self.debug('moving temporary file to %r' % self._path)
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os.rename(self._tmppath, self._path)
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self.changed = True
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else:
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# FIXME: don't raise TypeError
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e = TypeError("Checksums failed")
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self.setAndRaiseException(e)
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else:
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self.debug('failed to update tags, only have %r',
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common.tagListToDict(self.tasks[4].taglist))
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os.unlink(self._tmppath)
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e = TypeError("Tags not written")
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self.setAndRaiseException(e)
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task.MultiSeparateTask.stopped(self, taskk)
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