wavaudioreader.h

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// ##########################################################################
// ####                                                                  ####
// ####                      RTP Audio Server Project                    ####
// ####                    ============================                  ####
// ####                                                                  ####
// #### WAV Audio Reader                                                 ####
// ####                                                                  ####
// ####           Copyright (C) 1999-2012 by Thomas Dreibholz            ####
// ####                                                                  ####
// #### Contact:                                                         ####
// ####    EMail: dreibh@iem.uni-due.de                                  ####
// ####    WWW:   https://www.nntb.no/~dreibh/rtpaudio                ####
// ####                                                                  ####
// #### ---------------------------------------------------------------- ####
// ####                                                                  ####
// #### 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 3 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, see                    ####
// #### <http://www.gnu.org/licenses/>.                                  ####
// ####                                                                  ####
// ##########################################################################
// $Id: wavaudioreader.h 1296 2011-12-19 15:42:30Z dreibh $


#ifndef WAVAUDIOREADER_H
#define WAVAUDIOREADER_H


#include "tdsystem.h"
#include "audioreaderinterface.h"
#include "audioquality.h"


class WavAudioReader : virtual public AudioReaderInterface,
                       public AudioQuality
{
   // ====== Constructor/Destructor =========================================
   public:
   WavAudioReader(const char* name = NULL);

   ~WavAudioReader();

   // ====== Initialize =====================================================
   bool openMedia(const char* name);

   void closeMedia();

   bool ready() const;


   // ====== Input functions ================================================
   void getMediaInfo(MediaInfo& mediaInfo) const;

   MediaError getErrorCode() const;

   card64 getPosition() const;

   card64 getMaxPosition() const;

   void setPosition(const card64 position);

   cardinal getNextBlock(void* buffer, const cardinal blockSize);


   // ====== Private data ===================================================
   private:
   struct RIFF_Header {
      char   RIFF[4];
      card32 Length;
      char   FormatID[4];
   };
   struct RIFF_Chunk {
      char   ID[4];
      card32 Length;
   };
   struct WAVE_Format {
      card16 FormatTag;
      card16 Channels;
      card32 SamplesPerSec;
      card32 AvgBytesPerSec;
      card16 BlockAlign;
   };


   bool getChunk(RIFF_Chunk& chunk);


   MediaError  Error;
   FILE*       InputFD;
   WAVE_Format Format;
   card64      StartPosition;
   card64      EndPosition;
   card64      Position;
   card64      MaxPosition;
};


#endif