AudioFile.hxx

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/*
 * Copyright (c) 2001-2004 MUSIC TECHNOLOGY GROUP (MTG)
 *                         UNIVERSITAT POMPEU FABRA
 *
 *
 * This program 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.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#ifndef __AUDIOFILE__
#define __AUDIOFILE__

#include "DataTypes.hxx"
#include "AudioFileFormats.hxx"
#include "AudioFileHeader.hxx"
#include "AudioTextDescriptors.hxx"
#include "Filename.hxx"

namespace CLAM
{
        namespace AudioCodecs
        {
                class Codec;       // forward declaration
                class Stream; // forward declaration
        }

        class AudioFile
        {
        public:

                AudioFile();
                AudioFile( const AudioFile& );
                const AudioFile& operator=( const AudioFile& );
                virtual ~AudioFile();

                const Filename & GetLocation() const { return mLocation; }
                const AudioFileHeader & GetHeader() const { return mHeaderData; }
                const AudioTextDescriptors &   GetTextDescriptors() const { return mTextDescriptors; }
                AudioTextDescriptors & GetTextDescriptors() { return mTextDescriptors; }

                void SetTextDescriptors( const AudioTextDescriptors & descriptors ) { mTextDescriptors=descriptors; }

                EAudioFileCodec                GetCodec() const;

                bool                          IsValid() const;
                bool                          IsReadable() const;
                bool                          IsWritable() const;

                AudioCodecs::Stream*   GetStream();

        protected:
                bool SetHeader( const AudioFileHeader& );
                void ResolveCodec();

                void ActivateCodec();
                void ResetHeaderData();

                Filename mLocation;
                EAudioFileCodec        mCodec;
        private:
                AudioCodecs::Codec*   mActiveCodec;
                AudioFileHeader       mHeaderData;
                AudioTextDescriptors  mTextDescriptors;

        };

        class AudioFileSource : public AudioFile
        {
        public:
                void OpenExisting(const std::string &location);
        };

        class AudioFileTarget : public AudioFile
        {
        public:
                bool CreateNew(const std::string &location,
                                const AudioFileHeader &header);
        };


}




#endif // AudioFile.hxx