riff.h

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/*
* riff.h library for RIFF file format i/o
* Copyright (C) 2000 - 2002 Arne Schirmacher <arne@schirmacher.de>
* Copyright (C) 2001-2007 Dan Dennedy <dan@dennedy.org>
*
* 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 _RIFF_H
#define _RIFF_H 1

#include <vector>
using std::vector;

#include <pthread.h>

#include "endian_types.h"

#define QUADWORD int64_le_t
#define DWORD int32_le_t
#define LONG u_int32_le_t
#define WORD int16_le_t
#define BYTE u_int8_le_t
#define FOURCC u_int32_t      // No endian conversion needed.

#define RIFF_NO_PARENT (-1)
#define RIFF_LISTSIZE (4)
#define RIFF_HEADERSIZE (8)

#ifdef __cplusplus
extern "C"
{
    FOURCC make_fourcc( char * s );
}
#endif

class RIFFDirEntry
{
public:
    FOURCC type;
    FOURCC name;
    off_t length;
    off_t offset;
    int parent;
    int written;

    RIFFDirEntry();
    RIFFDirEntry( FOURCC t, FOURCC n, int l, int o, int p );
};


class RIFFFile
{
public:
    RIFFFile();
    RIFFFile( const RIFFFile& );
    virtual ~RIFFFile();
    RIFFFile& operator=( const RIFFFile& );

    virtual bool Open( const char *s );
    virtual bool Create( const char *s );
    virtual void Close();
    virtual int AddDirectoryEntry( FOURCC type, FOURCC name, off_t length, int list );
    virtual void SetDirectoryEntry( int i, FOURCC type, FOURCC name, off_t length, off_t offset, int list );
    virtual void SetDirectoryEntry( int i, RIFFDirEntry &entry );
    virtual void GetDirectoryEntry( int i, FOURCC &type, FOURCC &name, off_t &length, off_t &offset, int &list ) const;
    virtual RIFFDirEntry GetDirectoryEntry( int i ) const;
    virtual off_t GetFileSize( void ) const;
    virtual void PrintDirectoryEntry( int i ) const;
    virtual void PrintDirectoryEntryData( const RIFFDirEntry &entry ) const;
    virtual void PrintDirectory( void ) const;
    virtual int FindDirectoryEntry( FOURCC type, int n = 0 ) const;
    virtual void ParseChunk( int parent );
    virtual void ParseList( int parent );
    virtual void ParseRIFF( void );
    virtual bool ReadChunk( int chunk_index, void *data, off_t data_len );
    virtual void WriteChunk( int chunk_index, const void *data );
    virtual void WriteRIFF( void );

protected:
    int fd;
    pthread_mutex_t file_mutex;

private:
    vector<RIFFDirEntry> directory;
};
#endif

---