zmusic/thirdparty/opnmidi/chips/opn_chip_family.h

/*
 * Interfaces over Yamaha OPN2 (YM2612) chip emulators
 *
 * Copyright (c) 2017-2022 Vitaly Novichkov (Wohlstand)
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifndef OPN_CHIP_FAMILY_H
#define OPN_CHIP_FAMILY_H

#include <stdint.h>

#define OPN_FAMILY_EACH(F) \
    F(OPN2) F(OPNA)

enum OPNFamily
{
    #define Each(x) OPNChip_##x,
    OPN_FAMILY_EACH(Each)
    #undef Each
    OPNChip_Count
};

template <OPNFamily F>
struct OPNFamilyTraits;

template <>
struct OPNFamilyTraits<OPNChip_OPN2>
{
    enum
    {
        nativeRate = 53267,
        nativeClockRate = 7670454
    };
};

template <>
struct OPNFamilyTraits<OPNChip_OPNA>
{
    enum
    {
        nativeRate = 55466,
        nativeClockRate = 7987200
    };
};

inline uint32_t opn2_getNativeRate(OPNFamily f)
{
    switch(f)
    {
    default:
    #define Each(x) case OPNChip_##x: \
        return OPNFamilyTraits<OPNChip_##x>::nativeRate;
    OPN_FAMILY_EACH(Each)
    #undef Each
    }
}

inline uint32_t opn2_getNativeClockRate(OPNFamily f)
{
    switch(f)
    {
    default:
    #define Each(x) case OPNChip_##x: \
        return OPNFamilyTraits<OPNChip_##x>::nativeClockRate;
    OPN_FAMILY_EACH(Each)
    #undef Each
    }
}

#endif // OPN_CHIP_FAMILY_H