libcm is a C development framework with an emphasis on audio signal processing applications.
Du kannst nicht mehr als 25 Themen auswählen Themen müssen mit entweder einem Buchstaben oder einer Ziffer beginnen. Sie können Bindestriche („-“) enthalten und bis zu 35 Zeichen lang sein.

cmMidi.h 5.8KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161
  1. #ifndef cmMidi_h
  2. #define cmMidi_h
  3. #ifdef __cplusplus
  4. extern "C" {
  5. #endif
  6. enum
  7. {
  8. kMidiChCnt = 16,
  9. kInvalidMidiByte = 128,
  10. kMidiNoteCnt = kInvalidMidiByte,
  11. kMidiCtlCnt = kInvalidMidiByte,
  12. kMidiPgmCnt = kInvalidMidiByte,
  13. kInvalidMidiPitch = kInvalidMidiByte,
  14. kInvalidMidiVelocity = kInvalidMidiByte,
  15. kInvalidMidiCtl = kInvalidMidiByte,
  16. kInvalidMidiPgm = kInvalidMidiByte,
  17. kMidiSciPitchCharCnt = 5 // A#-1
  18. };
  19. // MIDI status bytes
  20. enum
  21. {
  22. kInvalidStatusMdId = 0x00,
  23. kNoteOffMdId = 0x80,
  24. kNoteOnMdId = 0x90,
  25. kPolyPresMdId = 0xa0,
  26. kCtlMdId = 0xb0,
  27. kPgmMdId = 0xc0,
  28. kChPresMdId = 0xd0,
  29. kPbendMdId = 0xe0,
  30. kSysExMdId = 0xf0,
  31. kSysComMtcMdId = 0xf1,
  32. kSysComSppMdId = 0xf2,
  33. kSysComSelMdId = 0xf3,
  34. kSysComUndef0MdId = 0xf4,
  35. kSysComUndef1MdId = 0xf5,
  36. kSysComTuneMdId = 0xf6,
  37. kSysComEoxMdId = 0xf7,
  38. kSysRtClockMdId = 0xf8,
  39. kSysRtUndef0MdId = 0xf9,
  40. kSysRtStartMdId = 0xfa,
  41. kSysRtContMdId = 0xfb,
  42. kSysRtStopMdId = 0xfc,
  43. kSysRtUndef1MdId = 0xfd,
  44. kSysRtSenseMdId = 0xfe,
  45. kSysRtResetMdId = 0xff,
  46. kMetaStId = 0xff,
  47. kSeqNumbMdId = 0x00,
  48. kTextMdId = 0x01,
  49. kCopyMdId = 0x02,
  50. kTrkNameMdId = 0x03,
  51. kInstrNameMdId = 0x04,
  52. kLyricsMdId = 0x05,
  53. kMarkerMdId = 0x06,
  54. kCuePointMdId = 0x07,
  55. kMidiChMdId = 0x20,
  56. kEndOfTrkMdId = 0x2f,
  57. kTempoMdId = 0x51,
  58. kSmpteMdId = 0x54,
  59. kTimeSigMdId = 0x58,
  60. kKeySigMdId = 0x59,
  61. kSeqSpecMdId = 0x7f,
  62. kInvalidMetaMdId = 0x80,
  63. kSustainCtlMdId = 0x40,
  64. kPortamentoCtlMdId = 0x41,
  65. kSostenutoCtlMdId = 0x42,
  66. kSoftPedalCtlMdId = 0x43,
  67. kLegatoCtlMdId = 0x44
  68. };
  69. typedef unsigned char cmMidiByte_t;
  70. //===============================================================================================
  71. // Utility Functions
  72. //
  73. #define cmMidiIsStatus( s ) (kNoteOffMdId <= (s) /*&& ((unsigned)(s)) <= kSysRtResetMdId*/ )
  74. #define cmMidiIsChStatus( s ) (kNoteOffMdId <= (s) && (s) < kSysExMdId)
  75. #define cmMidiIsNoteOn( s ) ( kNoteOnMdId <= (s) && (s) <= (kNoteOnMdId + kMidiChCnt) )
  76. #define cmMidiIsNoteOff( s, d1 ) ( cmMidiIsNoteOn(s) && (d1)==0 || kNoteOffMdId <= (s) && (s) <= (kNoteOffMdId + kMidiChCnt) )
  77. #define cmMidiIsCtl( s ) ( kCtlMdId <= (s) && (s) <= (kCtlMdId + kMidiChCnt) )
  78. #define cmMidiIsSustainPedal( s, d0 ) ( kCtlMdId <= (s) && (s) <= (kCtlMdId + kMidiChCnt) && (d0)== kSustainCtlMdId )
  79. #define cmMidiIsSustainPedalDown( s, d0, d1) ( cmMidiIsSustainPedal(s,d0) && (d1)>=64 )
  80. #define cmMidiIsSustainPedalUp( s, d0, d1) ( cmMidiIsSustainPedal(s,d0) && (d1)<64 )
  81. #define cmMidiIsPedal( s, d0 ) ( kCtlMdId <= (s) && (s) <= (kCtlMdId + kMidiChCnt) && (d0)>=kSustainCtlMdId && (d0)<=kLegatoCtlMdId )
  82. #define cmMidiIsPedalDown( s, d0, d1 ) ( cmMidiIsPedal(s,d0) && (d1)>=64 )
  83. #define cmMidiIsPedalUp( s, d0, d1 ) ( cmMidiIsPedal(s,d0) && (d1)<64 )
  84. const char* cmMidiStatusToLabel( cmMidiByte_t status );
  85. const char* cmMidiMetaStatusToLabel( cmMidiByte_t metaStatus );
  86. const char* cmMidiPedalLabel( cmMidiByte_t d0 );
  87. // Returns kInvalidMidiByte if status is not a valid status byte
  88. cmMidiByte_t cmMidiStatusToByteCount( cmMidiByte_t status );
  89. unsigned cmMidiTo14Bits( cmMidiByte_t d0, cmMidiByte_t d1 );
  90. void cmMidiSplit14Bits( unsigned v, cmMidiByte_t* d0Ref, cmMidiByte_t* d1Ref );
  91. int cmMidiToPbend( cmMidiByte_t d0, cmMidiByte_t d1 );
  92. void cmMidiSplitPbend( int v, cmMidiByte_t* d0Ref, cmMidiByte_t* d1Ref );
  93. //===============================================================================================
  94. // MIDI Communication data types
  95. //
  96. typedef struct
  97. {
  98. //unsigned deltaUs; // time since last MIDI msg in microseconds
  99. cmTimeSpec_t timeStamp;
  100. cmMidiByte_t status; // midi status byte
  101. cmMidiByte_t d0; // midi data byte 0
  102. cmMidiByte_t d1; // midi data byte 1
  103. cmMidiByte_t pad;
  104. } cmMidiMsg;
  105. typedef struct
  106. {
  107. void* cbDataPtr; // application supplied reference value from mdParserCreate()
  108. unsigned devIdx; // the device the msg originated from
  109. unsigned portIdx; // the port index on the source device
  110. cmMidiMsg* msgArray; // pointer to an array of 'msgCnt' mdMsg records or NULL if sysExMsg is non-NULL
  111. cmMidiByte_t* sysExMsg; // pointer to a sys-ex msg or NULL if msgArray is non-NULL (see note below)
  112. unsigned msgCnt; // count of mdMsg records or sys-ex bytes
  113. } cmMidiPacket_t;
  114. // Notes: If the sys-ex message can be contained in a single msg then
  115. // then the first msg byte is kSysExMdId and the last is kSysComEoxMdId.
  116. // If the sys-ex message is broken into multiple pieces then only the
  117. // first will begin with kSysExMdId and the last will end with kSysComEoxMdId.
  118. // If label is NULL or labelCharCnt==0 then a pointer to an internal static
  119. // buffer is returned. If label[] is given the it
  120. // should have at least 5 (kMidiPitchCharCnt) char's (including the terminating zero).
  121. // If 'pitch' is outside of the range 0-127 then a blank string is returned.
  122. const char* cmMidiToSciPitch( cmMidiByte_t pitch, char* label, unsigned labelCharCnt );
  123. // Scientific pitch string: [A-Ga-g][#b][#] where # may be -1 to 9.
  124. // Return kInvalidMidiPitch if sciPtichStr does not contain a valid
  125. // scientific pitch string. This function will convert C-1 to G9 to
  126. // valid MIDI pitch values 0 to 127. Scientific pitch strings outside
  127. // of this range will be returned as kInvalidMidiPitch.
  128. cmMidiByte_t cmSciPitchToMidi( const char* sciPitchStr );
  129. #ifdef __cplusplus
  130. }
  131. #endif
  132. #endif