#ifndef NW4R_SND_MML_PARSER_H
#define NW4R_SND_MML_PARSER_H
#include "nw4r/snd/snd_SeqTrack.h"
#include "nw4r/types_nw4r.h"


namespace nw4r {
namespace snd {
namespace detail {

// Forward declarations
class MmlSeqTrack;
class SeqPlayer;

class MmlParser {
public:
    enum SeqArgType {
        SEQ_ARG_U8,
        SEQ_ARG_S16,
        SEQ_ARG_VMIDI,
        SEQ_ARG_RANDOM,
        SEQ_ARG_VARIABLE
    };

    static const int CALL_STACK_MAX_DEPTH = 3;

public:
    virtual void CommandProc(MmlSeqTrack *pTrack, u32 command, s32 arg1,
                             s32 arg2) const; // at 0x8

    virtual Channel *NoteOnCommandProc(
        MmlSeqTrack *pTrack, int key, int velocity, s32 length,
        bool tie
    ) const; // at 0xC

    ParseResult Parse(MmlSeqTrack *pTrack, bool doNoteOn) const;

    volatile s16 *GetVariablePtr(SeqPlayer *pPlayer, SeqTrack *pTrack, int i) const;

    static void EnablePrintVar(bool enable) {
        mPrintVarEnabledFlag = enable;
    }

private:
    enum MmlSeqData {
        MML_CMD_MIN = 0x80, // <80 -> MML note, not a command

        MML_WAIT = 0x80,      // 0x80
        MML_SET_PRGNO,        // 0x81
        MML_OPENTRACK = 0x88, // 0x88
        MML_JUMP,             // 0x89
        MML_CALL,             // 0x8A

        MML_RNDPARAM = 0xA0, // 0xA0
        MML_INDPARAM,        // 0xA1
        MML_EXECIF,          // 0xA2

        MML_SET_TIMEBASE = 0xB0, // 0xB0

        MML_SET_PAN = 0xC0,    // 0xC0
        MML_SET_TRACK_VOLUME,  // 0xC1
        MML_SET_PLAYER_VOLUME, // 0xC2
        MML_SET_TRANSPOSE,     // 0xC3
        MML_SET_PITCHBEND,     // 0xC4
        MML_SET_BENDRANGE,     // 0xC5
        MML_SET_PRIORITY,      // 0xC6
        MML_SET_NOTEWAIT,      // 0xC7
        MML_SET_TIE,           // 0xC8
        MML_SET_PORTAMENTO,    // 0xC9
        MML_SET_LFODEPTH,      // 0xCA
        MML_SET_LFOSPEED,      // 0xCB
        MML_SET_LFOTARGET,     // 0xCC
        MML_SET_LFORANGE,      // 0xCD
        MML_SET_PORTASPEED,    // 0xCE
        MML_SET_PORTATIME,     // 0xCF

        MML_SET_ATTACK = 0xD0, // 0xD0
        MML_SET_DECAY,         // 0xD1
        MML_SET_SUSTAIN,       // 0xD2
        MML_SET_RELEASE,       // 0xD3
        MML_LOOP_START,        // 0xD4
        MML_SET_TRACK_VOLUME2, // 0xD5
        MML_PRINTVAR,          // 0xD6
        MML_SET_SURROUNDPAN,   // 0xD7
        MML_SET_LPFFREQ,       // 0xD8
        MML_SET_FXSEND_A,      // 0xD9
        MML_SET_FXSEND_B,      // 0xDA
        MML_SET_MAINSEND,      // 0xDB
        MML_SET_INITPAN,       // 0xDC
        MML_SET_MUTE,          // 0xDD
        MML_SET_FXSEND_C,      // 0xDE
        MML_SET_DAMPER,        // 0xDF

        MML_SET_LFODELAY = 0xE0, // 0xE0
        MML_SET_TEMPO,           // 0xE1
        MML_CMD_E2h,             // 0xE2
        MML_SET_SWEEPPITCH,      // 0xE3

        MML_LOOP_END = 0xFC, // 0xFC
        MML_RET,             // 0xFD
        MML_ALLOCTRACK,      // 0xFE
        MML_EOF,             // 0xFF

        MML_CMD_MASK = 0x80,
        MML_CMD_SET_MASK = 0xF0,

        MML_CMD_MAX = 0xFF, // >FF -> EX command

        // (MML_EX_COMMAND << 8) | Command
        MML_EX_COMMAND = 0xF0,

        // MML EX arithmetic command set
        MML_EX_ARITHMETIC = 0x80, // 0xF0 0x8X
        MML_EX_SET = 0x80,        // 0xF0 0x80
        MML_EX_APL,               // 0xF0 0x81
        MML_EX_AMI,               // 0xF0 0x82
        MML_EX_AMU,               // 0xF0 0x83
        MML_EX_ADV,               // 0xF0 0x84
        MML_EX_ALS,               // 0xF0 0x85
        MML_EX_RND,               // 0xF0 0x86
        MML_EX_AAD,               // 0xF0 0x87
        MML_EX_AOR,               // 0xF0 0x88
        MML_EX_AER,               // 0xF0 0x89
        MML_EX_ACO,               // 0xF0 0x8A
        MML_EX_AMD,               // 0xF0 0x8B

        // MML EX logic command set
        MML_EX_LOGIC = 0x90, // 0xF0 0x9X
        MML_EX_EQ = 0x90,    // 0xF0 0x90
        MML_EX_GE,           // 0xF0 0x91
        MML_EX_GT,           // 0xF0 0x92
        MML_EX_LE,           // 0xF0 0x93
        MML_EX_LT,           // 0xF0 0x94
        MML_EX_NE,           // 0xF0 0x95

        // MML EX userproc callback
        MML_EX_USERPROC = 0xE0, // 0xF0 0xE0

        MML_EX_CMD_MAX = 0xFFFF, // >FFFF -> Invalid command
    };

private:
    u8 ReadByte(const u8 **ppData) const {
        return *(*ppData)++;
    }

    u16 Read16(const u8 **ppData) const;
    u32 Read24(const u8 **ppData) const;
    s32 ReadVar(const u8 **ppData) const;
    s32 ReadArg(const u8 **ppData, SeqPlayer *pPlayer, SeqTrack *pTrack, SeqArgType type) const;

private:
    static bool mPrintVarEnabledFlag;
};

} // namespace detail
} // namespace snd
} // namespace nw4r

#endif