libcm is a C development framework with an emphasis on audio signal processing applications.
Você não pode selecionar mais de 25 tópicos Os tópicos devem começar com uma letra ou um número, podem incluir traços ('-') e podem ter até 35 caracteres.

cmMidi.h 5.9KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165
  1. #ifndef cmMidi_h
  2. #define cmMidi_h
  3. #ifdef __cplusplus
  4. extern "C" {
  5. #endif
  6. //( { file_desc:"MIDI utility constants and functions." kw:[midi]}
  7. enum
  8. {
  9. kMidiChCnt = 16,
  10. kInvalidMidiByte = 128,
  11. kMidiNoteCnt = kInvalidMidiByte,
  12. kMidiCtlCnt = kInvalidMidiByte,
  13. kMidiPgmCnt = kInvalidMidiByte,
  14. kInvalidMidiPitch = kInvalidMidiByte,
  15. kInvalidMidiVelocity = kInvalidMidiByte,
  16. kInvalidMidiCtl = kInvalidMidiByte,
  17. kInvalidMidiPgm = kInvalidMidiByte,
  18. kMidiSciPitchCharCnt = 5 // A#-1
  19. };
  20. // MIDI status bytes
  21. enum
  22. {
  23. kInvalidStatusMdId = 0x00,
  24. kNoteOffMdId = 0x80,
  25. kNoteOnMdId = 0x90,
  26. kPolyPresMdId = 0xa0,
  27. kCtlMdId = 0xb0,
  28. kPgmMdId = 0xc0,
  29. kChPresMdId = 0xd0,
  30. kPbendMdId = 0xe0,
  31. kSysExMdId = 0xf0,
  32. kSysComMtcMdId = 0xf1,
  33. kSysComSppMdId = 0xf2,
  34. kSysComSelMdId = 0xf3,
  35. kSysComUndef0MdId = 0xf4,
  36. kSysComUndef1MdId = 0xf5,
  37. kSysComTuneMdId = 0xf6,
  38. kSysComEoxMdId = 0xf7,
  39. kSysRtClockMdId = 0xf8,
  40. kSysRtUndef0MdId = 0xf9,
  41. kSysRtStartMdId = 0xfa,
  42. kSysRtContMdId = 0xfb,
  43. kSysRtStopMdId = 0xfc,
  44. kSysRtUndef1MdId = 0xfd,
  45. kSysRtSenseMdId = 0xfe,
  46. kSysRtResetMdId = 0xff,
  47. kMetaStId = 0xff,
  48. kSeqNumbMdId = 0x00,
  49. kTextMdId = 0x01,
  50. kCopyMdId = 0x02,
  51. kTrkNameMdId = 0x03,
  52. kInstrNameMdId = 0x04,
  53. kLyricsMdId = 0x05,
  54. kMarkerMdId = 0x06,
  55. kCuePointMdId = 0x07,
  56. kMidiChMdId = 0x20,
  57. kEndOfTrkMdId = 0x2f,
  58. kTempoMdId = 0x51,
  59. kSmpteMdId = 0x54,
  60. kTimeSigMdId = 0x58,
  61. kKeySigMdId = 0x59,
  62. kSeqSpecMdId = 0x7f,
  63. kInvalidMetaMdId = 0x80,
  64. kSustainCtlMdId = 0x40,
  65. kPortamentoCtlMdId = 0x41,
  66. kSostenutoCtlMdId = 0x42,
  67. kSoftPedalCtlMdId = 0x43,
  68. kLegatoCtlMdId = 0x44
  69. };
  70. typedef unsigned char cmMidiByte_t;
  71. //===============================================================================================
  72. // Utility Functions
  73. //
  74. #define cmMidiIsStatus( s ) (kNoteOffMdId <= (s) /*&& ((unsigned)(s)) <= kSysRtResetMdId*/ )
  75. #define cmMidiIsChStatus( s ) (kNoteOffMdId <= (s) && (s) < kSysExMdId)
  76. #define cmMidiIsNoteOn( s ) ( kNoteOnMdId <= (s) && (s) <= (kNoteOnMdId + kMidiChCnt) )
  77. #define cmMidiIsNoteOff( s, d1 ) ( cmMidiIsNoteOn(s) && (d1)==0 || kNoteOffMdId <= (s) && (s) <= (kNoteOffMdId + kMidiChCnt) )
  78. #define cmMidiIsCtl( s ) ( kCtlMdId <= (s) && (s) <= (kCtlMdId + kMidiChCnt) )
  79. #define cmMidiIsSustainPedal( s, d0 ) ( kCtlMdId <= (s) && (s) <= (kCtlMdId + kMidiChCnt) && (d0)== kSustainCtlMdId )
  80. #define cmMidiIsSustainPedalDown( s, d0, d1) ( cmMidiIsSustainPedal(s,d0) && (d1)>=64 )
  81. #define cmMidiIsSustainPedalUp( s, d0, d1) ( cmMidiIsSustainPedal(s,d0) && (d1)<64 )
  82. #define cmMidiIsPedal( s, d0 ) ( kCtlMdId <= (s) && (s) <= (kCtlMdId + kMidiChCnt) && (d0)>=kSustainCtlMdId && (d0)<=kLegatoCtlMdId )
  83. #define cmMidiIsPedalDown( s, d0, d1 ) ( cmMidiIsPedal(s,d0) && (d1)>=64 )
  84. #define cmMidiIsPedalUp( s, d0, d1 ) ( cmMidiIsPedal(s,d0) && (d1)<64 )
  85. const char* cmMidiStatusToLabel( cmMidiByte_t status );
  86. const char* cmMidiMetaStatusToLabel( cmMidiByte_t metaStatus );
  87. const char* cmMidiPedalLabel( cmMidiByte_t d0 );
  88. // Returns kInvalidMidiByte if status is not a valid status byte
  89. cmMidiByte_t cmMidiStatusToByteCount( cmMidiByte_t status );
  90. unsigned cmMidiTo14Bits( cmMidiByte_t d0, cmMidiByte_t d1 );
  91. void cmMidiSplit14Bits( unsigned v, cmMidiByte_t* d0Ref, cmMidiByte_t* d1Ref );
  92. int cmMidiToPbend( cmMidiByte_t d0, cmMidiByte_t d1 );
  93. void cmMidiSplitPbend( int v, cmMidiByte_t* d0Ref, cmMidiByte_t* d1Ref );
  94. //===============================================================================================
  95. // MIDI Communication data types
  96. //
  97. typedef struct
  98. {
  99. //unsigned deltaUs; // time since last MIDI msg in microseconds
  100. cmTimeSpec_t timeStamp;
  101. cmMidiByte_t status; // midi status byte
  102. cmMidiByte_t d0; // midi data byte 0
  103. cmMidiByte_t d1; // midi data byte 1
  104. cmMidiByte_t pad;
  105. } cmMidiMsg;
  106. typedef struct
  107. {
  108. void* cbDataPtr; // application supplied reference value from mdParserCreate()
  109. unsigned devIdx; // the device the msg originated from
  110. unsigned portIdx; // the port index on the source device
  111. cmMidiMsg* msgArray; // pointer to an array of 'msgCnt' mdMsg records or NULL if sysExMsg is non-NULL
  112. cmMidiByte_t* sysExMsg; // pointer to a sys-ex msg or NULL if msgArray is non-NULL (see note below)
  113. unsigned msgCnt; // count of mdMsg records or sys-ex bytes
  114. } cmMidiPacket_t;
  115. // Notes: If the sys-ex message can be contained in a single msg then
  116. // then the first msg byte is kSysExMdId and the last is kSysComEoxMdId.
  117. // If the sys-ex message is broken into multiple pieces then only the
  118. // first will begin with kSysExMdId and the last will end with kSysComEoxMdId.
  119. // If label is NULL or labelCharCnt==0 then a pointer to an internal static
  120. // buffer is returned. If label[] is given the it
  121. // should have at least 5 (kMidiPitchCharCnt) char's (including the terminating zero).
  122. // If 'pitch' is outside of the range 0-127 then a blank string is returned.
  123. const char* cmMidiToSciPitch( cmMidiByte_t pitch, char* label, unsigned labelCharCnt );
  124. // Scientific pitch string: [A-Ga-g][#b][#] where # may be -1 to 9.
  125. // Return kInvalidMidiPitch if sciPtichStr does not contain a valid
  126. // scientific pitch string. This function will convert C-1 to G9 to
  127. // valid MIDI pitch values 0 to 127. Scientific pitch strings outside
  128. // of this range will be returned as kInvalidMidiPitch.
  129. cmMidiByte_t cmSciPitchToMidi( const char* sciPitchStr );
  130. //)
  131. #ifdef __cplusplus
  132. }
  133. #endif
  134. #endif