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/*! \file
* header functions for qtag
*/
# ifndef __qtag_hh__
# define __qtag_hh__
# include "qfile.hh"
# include <sys/types.h>
using namespace std;
/*!
* \brief class for mp3 tags
*
* this class models (partially) a mp3 tag v1.0
*/
class qtag {
private:
static const u_int32_t fieldlengths[];
//! struct for mp3 tags
struct tag {
char tagid[3], /*!< 'TAG' */
title[30], /*!< title */
artist[30], /*!< artist */
album[30], /*!< album name */
year[4], /*!< year */
comment[30], /*!< free comment */
genre[1]; /*!< one byte music genre identifier */
};
//! memory location where the tag is mapped
struct tag *tag;
public:
//! length of the tag
static const u_int32_t LENGTH;
//! list of tag fields
enum field { TAG=0, TITLE, ARTIST, ALBUM, YEAR, COMMENT, GENRE };
/*!
* initializes itself with a tag in memory
* \param a the address where the tag is found
*/
qtag (caddr_t a);
/*!
* initializes itself with a tag in a file
* \param f the file where to look for the tag
*/
qtag (qfile &f);
/*!
* \brief gets the location in memory where the tag is placed
* \return the memory address of the tag
*/
caddr_t getMap();
// treballar amb strings!!
void get (enum field f, char *);
void set (enum field f, char *);
/*
* \brief whether the tag is (found and) valid
* \return whether is a valid tag or not
*/
bool isValid();
u_int32_t fieldlength (enum field f) { return fieldlengths[f]; }
void cleanFields ();
/*!
* \brief print the wav characteristics on the given output stream
* \param os the given output stream
*/
void print (ostream *os);
};
ostream &operator<<(ostream &os, qtag &t);
# endif
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