CLAM-Development  1.4.0
OggVorbisAudioStream.hxx
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1 /*
2  * Copyright (c) 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 #if USE_OGGVORBIS != 1
23 #error USE_OGGVORBIS was not set to 1 in your settings.cfg file, but you are including files that require this. Please fix your settings.cfg
24 #endif
25 
26 #ifndef __OGGVORBISAUDIOSTREAM__
27 #define __OGGVORBISAUDIOSTREAM__
28 
29 #include <string>
30 #include <vorbis/vorbisfile.h>
31 #include <vorbis/vorbisenc.h>
32 #include <deque>
33 #include <vector>
34 #include "AudioCodecs_Stream.hxx"
35 #include "DataTypes.hxx"
36 
37 namespace CLAM
38 {
39 
40 namespace AudioCodecs
41 {
43  {
44 
45  public:
46  OggVorbisAudioStream( const AudioFile& file );
48 
49  void PrepareReading();
50  void PrepareWriting();
51  void Dispose();
52  void SeekTo(unsigned long framePosition);
53 
54  protected:
55  void DiskToMemoryTransfer();
56  void MemoryToDiskTransfer();
57 
58  private:
59  void VorbisI_EncoderSetup();
60  void WriteBitstreamHeader();
61 
62  void DoVorbisAnalysis();
63  void PushAnalysisBlocksOntoOggStream();
64  void ConsumeDecodedSamples();
65 
66  protected:
67  std::string mName;
68  FILE* mFileHandle;
69  OggVorbis_File mNativeFileParams;
72 
73  // Structs needed for Vorbis encoding
74  vorbis_info mStreamInfo;
75  vorbis_comment mFileComments;
76 
77  ogg_stream_state mOggStreamState; // os
78  ogg_page mOggPage; // og
79  ogg_packet mOggPacket; // op
80  vorbis_dsp_state mDSPState; // vd
81  vorbis_block mVorbisBlock; // vb
82 
84  bool mEncoding;
85 
86  static const unsigned mMaxBlockSize;
87  static const unsigned mAnalysisWindowSize;
88  std::vector<TInt16> mBlockBuffer;
89  std::vector<std::deque<TData> > mEncodeBuffer;
90  std::deque<TInt16> mDecodeBuffer;
91 
93  };
94 }
95 
96 }
97 
98 #endif // OggVorbisAudioStream.hxx
99