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/***************************************************************************
SidFilter.cpp - filter type decoding support
-------------------
begin : Sun Mar 11 2001
copyright : (C) 2001 by Simon White
email : s_a_white@email.com
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
#include <sidplay/sidtypes.h>
#include "libini.h"
// For compatibilty with libsidplay2-0.7.
#ifndef sid_filter_t
typedef int sid_fc_t[2];
typedef struct
{
sid_fc_t cutoff[0x800];
uint_least16_t points;
} sid_filter_t;
#define sid_filter_t sid_filter_t
#endif
#ifndef SIDPLAY1_EMUCFG_H
// For compatibilty with libsidplay1
// If you use this and libsidplay1 headers, make sure
// those are included first
// Default filter parameters.
const float SIDEMU_DEFAULTFILTERFS = (float) 400.0;
const float SIDEMU_DEFAULTFILTERFM = (float) 60.0;
const float SIDEMU_DEFAULTFILTERFT = (float) 0.05;
#endif // SIDPLAY1_EMUCFG_H
class SID_EXTERN SidFilter
{
protected:
bool m_status;
char *m_errorString;
sid_filter_t m_filter;
protected:
void readType1 (ini_fd_t ini);
void readType2 (ini_fd_t ini);
void clear ();
public:
SidFilter ();
~SidFilter ();
void read (char *filename);
void read (ini_fd_t ini, char *heading);
void calcType2 (double fs, double fm, double ft);
const char* error (void) { return m_errorString; }
const sid_filter_t* provide () const;
operator bool () { return m_status; }
const SidFilter& operator= (const SidFilter &filter);
const sid_filter_t &operator= (const sid_filter_t &filter);
const sid_filter_t *operator= (const sid_filter_t *filter);
};
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