OggFileReader.h

Go to the documentation of this file.

//    Copyright 2004-2019, SenseGraphics AB
//
//    This file is part of H3D API.
//
//    H3D API is free software; you can redistribute it and/or modify
//    it under the terms of the GNU General Public License as published by
//    the Free Software Foundation; either version 2 of the License, or
//    (at your option) any later version.
//
//    H3D API is distributed in the hope that it will be useful,
//    but WITHOUT ANY WARRANTY; without even the implied warranty of
//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//    GNU General Public License for more details.
//
//    You should have received a copy of the GNU General Public License
//    along with H3D API; if not, write to the Free Software
//    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//
//    A commercial license is also available. Please contact us at 
//    www.sensegraphics.com for more information.
//
//
//
 
#ifndef __OGGFILEREADER_H__
#define __OGGFILEREADER_H__
 
#include <H3D/H3DSoundFileNode.h>
 
#ifdef HAVE_LIBVORBIS
#include <vorbis/vorbisfile.h>
 
namespace H3D {
 
  class H3DAPI_API OggFileReader : public H3DSoundFileNode {
  public:
 
    OggFileReader() : ogg_file(), info( NULL ), comment( NULL ) {
      should_clear = false;
      type_name = "OggFileReader";
    }
 
    ~OggFileReader() {
      if( should_clear )
        ov_clear( &ogg_file );
    }
 
    unsigned int load( const string &_url );
          
    virtual H3DTime duration() {
      return ov_time_total( &ogg_file, -1 );
    }
    
    virtual void reset() {
      ov_raw_seek( &ogg_file, 0 );
    }
    
    virtual unsigned int totalDataSize() {
      return (unsigned int)( ov_pcm_total( &ogg_file, -1 ) * bitsPerSample() / 8 );
    }
      
    virtual unsigned int nrChannels() {
      return info->channels;
    }
    
    virtual unsigned int bitsPerSample() {
      return 16;
    }
 
    virtual unsigned int read( char *buffer, unsigned int size );
    
    virtual unsigned int samplesPerSecond() {
      return info->rate;
    }
    
    static bool supportsFileType( const string &url );
 
    static H3DNodeDatabase database;
 
    static FileReaderRegistration reader_registration;
 
  protected:
    OggVorbis_File ogg_file;
    // used to know if ov_clear should be called
    // there was a problem when creating and destroying OggFileReader
    // without using it.
    bool should_clear;
    vorbis_info* info;
    vorbis_comment *comment;
    string url;
  };
}
 
#endif
#endif