Source Code for Module timeside.encoder.ogg

 1  # -*- coding: utf-8 -*- 
 2  # 
 3  # Copyright (c) 2010 Paul Brossier <piem@piem.org> 
 4  # Copyright (c) 2010 Guillaume Pellerin <yomguy@parisson.com> 
 5   
 6  # This file is part of TimeSide. 
 7   
 8  # TimeSide is free software: you can redistribute it and/or modify 
 9  # it under the terms of the GNU General Public License as published by 
10  # the Free Software Foundation, either version 2 of the License, or 
11  # (at your option) any later version. 
12   
13  # TimeSide is distributed in the hope that it will be useful, 
14  # but WITHOUT ANY WARRANTY; without even the implied warranty of 
15  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
16  # GNU General Public License for more details. 
17   
18  # You should have received a copy of the GNU General Public License 
19  # along with TimeSide.  If not, see <http://www.gnu.org/licenses/>. 
20   
21   
22  from timeside.core import Processor, implements, interfacedoc 
23  from timeside.encoder.core import GstEncoder 
24  from timeside.api import IEncoder 
25  from timeside.tools import * 
26   
27 -class VorbisEncoder(GstEncoder): 
28      """ gstreamer-based vorbis encoder """ 
29      implements(IEncoder) 
30   
31      @interfacedoc 
32 -    def setup(self, channels=None, samplerate=None, blocksize=None, totalframes=None): 
33          super(VorbisEncoder, self).setup(channels, samplerate, blocksize, totalframes) 
34          self.pipe = ''' appsrc name=src 
35                    ! audioconvert 
36                    ! vorbisenc quality=0.9 
37                    ! oggmux 
38                    ''' 
39   
40          if self.filename and self.streaming: 
41              self.pipe += ''' ! tee name=t 
42              ! queue ! filesink location=%s 
43              t. ! queue ! appsink name=app sync=False 
44              ''' % self.filename 
45   
46          elif self.filename : 
47              self.pipe += '! filesink location=%s async=False sync=False ' % self.filename 
48          else: 
49              self.pipe += '! queue ! appsink name=app sync=False ' 
50   
51          self.start_pipeline(channels, samplerate) 
52   
53   
54      @staticmethod 
55      @interfacedoc 
56 -    def id(): 
57          return "gst_vorbis_enc" 
58   
59      @staticmethod 
60      @interfacedoc 
61 -    def description(): 
62          return "Vorbis GStreamer based encoder" 
63   
64      @staticmethod 
65      @interfacedoc 
66 -    def format(): 
67          return "OGG" 
68   
69      @staticmethod 
70      @interfacedoc 
71 -    def file_extension(): 
72          return "ogg" 
73   
74      @staticmethod 
75      @interfacedoc 
76 -    def mime_type(): 
77          return "application/ogg" 
78   
79      @interfacedoc 
80 -    def set_metadata(self, metadata): 
81          self.metadata = metadata 
82