141 wiersze
4.2 KiB
C
141 wiersze
4.2 KiB
C
#ifndef cmMidi_h
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#define cmMidi_h
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#ifdef __cplusplus
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extern "C" {
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#endif
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enum
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{
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kMidiChCnt = 16,
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kInvalidMidiByte = 128,
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kMidiNoteCnt = kInvalidMidiByte,
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kMidiCtlCnt = kInvalidMidiByte,
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kMidiPgmCnt = kInvalidMidiByte,
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kInvalidMidiPitch = kInvalidMidiByte,
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kInvalidMidiVelocity = kInvalidMidiByte,
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kInvalidMidiCtl = kInvalidMidiByte,
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kInvalidMidiPgm = kInvalidMidiByte,
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kMidiSciPitchCharCnt = 5 // A#-1
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};
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// MIDI status bytes
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enum
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{
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kInvalidStatusMdId = 0x00,
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kNoteOffMdId = 0x80,
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kNoteOnMdId = 0x90,
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kPolyPresMdId = 0xa0,
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kCtlMdId = 0xb0,
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kPgmMdId = 0xc0,
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kChPresMdId = 0xd0,
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kPbendMdId = 0xe0,
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kSysExMdId = 0xf0,
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kSysComMtcMdId = 0xf1,
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kSysComSppMdId = 0xf2,
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kSysComSelMdId = 0xf3,
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kSysComUndef0MdId = 0xf4,
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kSysComUndef1MdId = 0xf5,
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kSysComTuneMdId = 0xf6,
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kSysComEoxMdId = 0xf7,
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kSysRtClockMdId = 0xf8,
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kSysRtUndef0MdId = 0xf9,
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kSysRtStartMdId = 0xfa,
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kSysRtContMdId = 0xfb,
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kSysRtStopMdId = 0xfc,
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kSysRtUndef1MdId = 0xfd,
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kSysRtSenseMdId = 0xfe,
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kSysRtResetMdId = 0xff,
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kMetaStId = 0xff,
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kSeqNumbMdId = 0x00,
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kTextMdId = 0x01,
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kCopyMdId = 0x02,
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kTrkNameMdId = 0x03,
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kInstrNameMdId = 0x04,
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kLyricsMdId = 0x05,
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kMarkerMdId = 0x06,
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kCuePointMdId = 0x07,
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kMidiChMdId = 0x20,
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kEndOfTrkMdId = 0x2f,
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kTempoMdId = 0x51,
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kSmpteMdId = 0x54,
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kTimeSigMdId = 0x58,
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kKeySigMdId = 0x59,
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kSeqSpecMdId = 0x7f,
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kInvalidMetaMdId = 0x80,
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kSustainCtlMdId = 64
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};
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typedef unsigned char cmMidiByte_t;
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//===============================================================================================
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// Utility Functions
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//
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#define cmMidiIsStatus( s ) (kNoteOffMdId <= (s) /*&& ((unsigned)(s)) <= kSysRtResetMdId*/ )
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#define cmMidiIsChStatus( s ) (kNoteOffMdId <= (s) && (s) < kSysExMdId)
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const char* cmMidiStatusToLabel( cmMidiByte_t status );
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const char* cmMidiMetaStatusToLabel( cmMidiByte_t metaStatus );
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// Returns kInvalidMidiByte if status is not a valid status byte
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cmMidiByte_t cmMidiStatusToByteCount( cmMidiByte_t status );
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//===============================================================================================
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// MIDI Communication data types
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//
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typedef struct
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{
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unsigned deltaUs; // time since last MIDI msg in microseconds
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cmMidiByte_t status; // midi status byte
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cmMidiByte_t d0; // midi data byte 0
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cmMidiByte_t d1; // midi data byte 1
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cmMidiByte_t pad;
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} cmMidiMsg;
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typedef struct
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{
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void* cbDataPtr; // application supplied reference value from mdParserCreate()
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unsigned devIdx; // the device the msg originated from
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unsigned portIdx; // the port index on the source device
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cmMidiMsg* msgArray; // pointer to an array of 'msgCnt' mdMsg records or NULL if sysExMsg is non-NULL
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cmMidiByte_t* sysExMsg; // pointer to a sys-ex msg or NULL if msgArray is non-NULL (see note below)
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unsigned msgCnt; // count of mdMsg records or sys-ex bytes
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} cmMidiPacket_t;
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// Notes: If the sys-ex message can be contained in a single msg then
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// then the first msg byte is kSysExMdId and the last is kSysComEoxMdId.
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// If the sys-ex message is broken into multiple pieces then only the
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// first will begin with kSysExMdId and the last will end with kSysComEoxMdId.
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// If label is NULL or labelCharCnt==0 then a pointer to an internal static
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// buffer is returned. If label[] is given the it
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// should have at least 5 (kMidiPitchCharCnt) char's (including the terminating zero).
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// If 'pitch' is outside of the range 0-127 then a blank string is returned.
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const char* cmMidiToSciPitch( cmMidiByte_t pitch, char* label, unsigned labelCharCnt );
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// Scientific pitch string: [A-Ga-g][#b][#] where # may be -1 to 9.
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// Return kInvalidMidiPitch if sciPtichStr does not contain a valid
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// scientific pitch string. This function will convert C-1 to G9 to
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// valid MIDI pitch values 0 to 127. Scientific pitch strings outside
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// of this range will be returned as kInvalidMidiPitch.
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cmMidiByte_t cmSciPitchToMidi( const char* sciPitchStr );
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#ifdef __cplusplus
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}
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#endif
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#endif
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