CLAM-Development  1.4.0
AudioIn.cxx
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1 /*
2  * Copyright (c) 2001-2004 MUSIC TECHNOLOGY GROUP (MTG)
3  * UNIVERSITAT POMPEU FABRA
4  *
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19  *
20  */
21 
22 #include "AudioIn.hxx"
23 #include "AudioManager.hxx"
24 #include "ProcessingFactory.hxx"
25 
26 
27 namespace CLAM
28 {
29 
30 namespace Hidden
31 {
32  static const char * metadata[] = {
33  "key", "AudioIn",
34 // "category", "Audio I/O",
35 // "description", "AudioIn",
36  0
37  };
38  static FactoryRegistrator<ProcessingFactory, AudioIn> reg = metadata;
39 }
40 
41 
43 {
44  CopyAsConcreteConfig(mConfig, c);
45 
46  if (mpDevice)
47  mpDevice->Unregister(*this);
48 
49  AudioManager *m;
50 
51  try {
52  m = &(AudioManager::Current());
53  }
54  catch (Err &e) {
55  ErrProcessingObj ne("AudioIn::ConcreteConfigure(): No AudioManager found.",this);
56  ne.Embed(e);
57  throw(ne);
58  }
59 
60  bool res;
61  try {
62  res = m->Register(*this);
63  }
64  catch (Err &e) {
66  res = false;
67  }
68 
69  if (res == false)
70  AddConfigErrorMessage("AudioIn::ConcreteConfigure(): Failed to register in AudioManager.");
71 
72  mOutput.SetSize(mConfig.GetFrameSize());
73 
74  return res;
75 }
76 
78 {
79  if (!mpDevice)
80  throw(Err("AudioIn::ConcreteStart(): No Device found!"));
81  mpDevice->Start();
82  return true;
83 }
84 
86 {
87  if (mpDevice)
88  mpDevice->GetInfo(info);
89  else
90  info.Reset();
91 }
92 
94 {
95  bool res = Do(mOutput.GetAudio());
96  mOutput.Produce();
97  return res;
98 }
99 
100 }
101