speexfile.cpp

来自「Amarok是一款在LINUX或其他类UNIX操作系统中运行的音频播放器软件。 」· C++ 代码 · 共 112 行

/***************************************************************************
    copyright            : (C) 2006 by Lukáš Lalinský
    email                : [e-mail]
    
    copyright            : (C) 2002 by Scott Wheeler
    email                : [e-mail] 
                           (original Vorbis implementation)
 ***************************************************************************/

/***************************************************************************
 *   This library is free software; you can redistribute it and/or modify  *
 *   it  under the terms of the GNU Lesser General Public License version  *
 *   2.1 as published by the Free Software Foundation.                     *
 *                                                                         *
 *   This library 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     *
 *   Lesser General Public License for more details.                       *
 *                                                                         *
 *   You should have received a copy of the GNU Lesser General Public      *
 *   License along with this library; if not, write to the Free Software   *
 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,            *
 *   MA  02110-1301  USA                                                   *
 ***************************************************************************/

#include <bitset>

#include <tstring.h>
#if 0
#include <tdebug.h>
#endif

#include "speexfile.h"

using namespace TagLib;

class Speex::File::FilePrivate
{
public:
  FilePrivate() :
    comment(0),
    properties(0) {}

  ~FilePrivate()
  {
    delete comment;
    delete properties;
  }

  Ogg::XiphComment *comment;
  Properties *properties;
};

////////////////////////////////////////////////////////////////////////////////
// public members
////////////////////////////////////////////////////////////////////////////////

Speex::File::File(const char *file, bool readProperties,
                   Properties::ReadStyle propertiesStyle) : Ogg::File(file)
{
  d = new FilePrivate;
  read(readProperties, propertiesStyle);
}

Speex::File::~File()
{
  delete d;
}

Ogg::XiphComment *Speex::File::tag() const
{
  return d->comment;
}

Speex::Properties *Speex::File::audioProperties() const
{
  return d->properties;
}

bool Speex::File::save()
{
  if(!d->comment)
    d->comment = new Ogg::XiphComment;

  setPacket(1, d->comment->render());

  return Ogg::File::save();
}

////////////////////////////////////////////////////////////////////////////////
// private members
////////////////////////////////////////////////////////////////////////////////

void Speex::File::read(bool readProperties, Properties::ReadStyle propertiesStyle)
{
  ByteVector speexHeaderData = packet(0);
  
  if(!speexHeaderData.startsWith("Speex   ")) {
#if 0
    debug("Speex::File::read() -- invalid Speex identification header");
#endif
    return;
  }
  
  ByteVector commentHeaderData = packet(1);

  d->comment = new Ogg::XiphComment(commentHeaderData);

  if(readProperties)
    d->properties = new Properties(this, propertiesStyle);
}