libcm is a C development framework with an emphasis on audio signal processing applications.
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cmScore.h 11KB

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  1. #ifndef cmScore_h
  2. #define cmScore_h
  3. #ifdef __cplusplus
  4. extern "C" {
  5. #endif
  6. //( { file_desc:"Object for managing musical score data." kw:[score]}
  7. enum
  8. {
  9. kOkScRC = cmOkRC,
  10. kCsvFailScRC,
  11. kSyntaxErrScRC,
  12. kInvalidIdxScRC,
  13. kTimeLineFailScRC,
  14. kInvalidDynRefCntScRC,
  15. kMidiFileFailScRC,
  16. kPedalInvalidScRC
  17. };
  18. enum
  19. {
  20. kInvalidEvtScId = 0,
  21. kTimeSigEvtScId,
  22. kKeySigEvtScId,
  23. kTempoEvtScId,
  24. kTrackEvtScId,
  25. kTextEvtScId,
  26. kNameEvtScId,
  27. kEOTrackEvtScId,
  28. kCopyEvtScId,
  29. kBlankEvtScId,
  30. kBarEvtScId,
  31. kPgmEvtScId,
  32. kCtlEvtScId,
  33. kNonEvtScId,
  34. kPedalEvtScId
  35. };
  36. // Flags used by cmScoreEvt_t.flags
  37. enum
  38. {
  39. kEvenScFl = 0x001, // This note is marked for evenness measurement
  40. kDynScFl = 0x002, // This note is marked for dynamics measurement
  41. kTempoScFl = 0x004, // This note is marked for tempo measurement
  42. kSkipScFl = 0x008, // This isn't a real event (e.g. tied note) skip over it
  43. kGraceScFl = 0x010, // This is a grace note
  44. kInvalidScFl = 0x020, // This note has a calculated time
  45. kPedalDnScFl = 0x040, // This is a pedal down event (pitch holds the pedal id and durSecs holds the time the pedal will remain down.)
  46. kPedalUpScFl = 0x080 // This is a pedal up event (pitch holds the pedal id)
  47. };
  48. // Id's used by cmScoreSet_t.varId and as indexes into
  49. // cmScoreSection_t.vars[].
  50. enum
  51. {
  52. kInvalidVarScId,
  53. kEvenVarScId,
  54. kDynVarScId,
  55. kTempoVarScId,
  56. kScVarCnt
  57. };
  58. struct cmScoreLoc_str;
  59. struct cmScoreSet_str;
  60. // The score can be divided into arbitrary non-overlapping sections.
  61. typedef struct
  62. {
  63. const cmChar_t* label; // section label
  64. unsigned index; // index of this record in the internal section array
  65. struct cmScoreLoc_str* locPtr; // location where this section starts
  66. unsigned begEvtIndex; // score element index where this section starts
  67. unsigned setCnt; // Count of elements in setArray[]
  68. struct cmScoreSet_str** setArray; // Ptrs to sets which are applied to this section.
  69. double vars[ kScVarCnt ]; // Set to DBL_MAX by default.
  70. } cmScoreSection_t;
  71. typedef struct
  72. {
  73. unsigned type; // Event type
  74. double secs; // Time location in seconds
  75. double durSecs; // Duration in seconds
  76. unsigned index; // Index of this event in the event array.
  77. unsigned locIdx; // Index of the location containing this event
  78. cmMidiByte_t pitch; // MIDI pitch of this note or the MIDI pedal id of pedal down/up msg (64=sustain 65=sostenuto 66=soft)
  79. unsigned flags; // Attribute flags for this event
  80. unsigned dynVal; // Dynamcis value pppp to ffff (1 to 11) for this note.
  81. double frac; // Note's time value for tempo and non-grace evenness notes.
  82. unsigned barNumb; // Bar id of the measure containing this event.
  83. unsigned barNoteIdx; // Index of this note in this bar
  84. unsigned csvRowNumb; // File row number (not index) from which this record originated
  85. unsigned perfSmpIdx; // Time this event was performed or cmInvalidIdx if the event was not performed.
  86. unsigned perfVel; // Velocity of the performed note or 0 if the note was not performed.
  87. unsigned perfDynLvl; // Index into dynamic level ref. array assoc'd with perfVel
  88. unsigned line; // Line number of this event in the score file.
  89. } cmScoreEvt_t;
  90. // A 'set' is a collection of events that are grouped in time and all marked with a given attribute.
  91. // (e.g. eveness, tempo, dynamcs ... )
  92. typedef struct cmScoreSet_str
  93. {
  94. unsigned varId; // See kXXXVarScId flags above
  95. cmScoreEvt_t** eleArray; // Events that make up this set in time order
  96. unsigned eleCnt; //
  97. cmScoreSection_t** sectArray; // Sections this set will be applied to
  98. unsigned sectCnt; //
  99. unsigned* symArray; // symArray[sectCnt] - symbol name of all variables represented by this set (e.g '1a-e', '1b-e', '2-t', etc)
  100. unsigned* costSymArray; // costSymArray[sectCnt] - same as symbols in symArray[] with 'c' prepended to front
  101. bool doneFl;
  102. double value;
  103. struct cmScoreSet_str* llink; // cmScoreLoc_t setList link
  104. } cmScoreSet_t;
  105. typedef enum
  106. {
  107. kInvalidScMId,
  108. kRecdBegScMId,
  109. kRecdEndScMId,
  110. kFadeScMId,
  111. kPlayBegScMId,
  112. kPlayEndScMId
  113. } cmMarkScMId_t;
  114. // score markers
  115. typedef struct cmScoreMarker_str
  116. {
  117. cmMarkScMId_t markTypeId; // marker type
  118. unsigned labelSymId; // marker label
  119. struct cmScoreLoc_str* scoreLocPtr; // score location of the marker
  120. unsigned csvRowIdx; // score CSV file line assoc'd w/ this marker
  121. struct cmScoreMarker_str* link; // cmScoreLoc_t.markList links
  122. } cmScoreMarker_t;
  123. // All events which are simultaneous are collected into a single
  124. // cmScoreLoc_t record.
  125. typedef struct cmScoreLoc_str
  126. {
  127. unsigned index; // index of this location record
  128. double secs; // Time of this location
  129. unsigned evtCnt; // Count of events in evtArray[].
  130. cmScoreEvt_t** evtArray; // Events which occur at this time.
  131. unsigned barNumb; // Bar number this event is contained by.
  132. cmScoreSet_t* setList; // Set's which end on this time location (linked through cmScoreSet_t.llink)
  133. cmScoreSection_t* begSectPtr; // NULL if this location does not start a section
  134. cmScoreMarker_t* markList; // List of markers assigned to this location
  135. } cmScoreLoc_t;
  136. typedef void (*cmScCb_t)( void* arg, const void* data, unsigned byteCnt );
  137. typedef cmRC_t cmScRC_t;
  138. typedef cmHandle_t cmScH_t;
  139. extern cmScH_t cmScNullHandle;
  140. const cmChar_t* cmScEvtTypeIdToLabel( unsigned id );
  141. const cmChar_t* cmScDynIdToLabel( unsigned id );
  142. const cmChar_t* cmScStatusToOpString( unsigned id );
  143. // Initialize a score object from a CSV File generated from a score spreadsheet.
  144. // The dynRefArray[dynRefCnt] and cbFunc(cbArg) are optional if these
  145. // features are not used.
  146. // If provided the dynRefArray[] is copied into an internal array.
  147. // The physical array passed here therefore does not need to remain valid.
  148. // Set 'srate' to zero if the score will not be used to perform measurement calculations.
  149. // The symbol table is only necessary if valid symbols are to be assigned to the cmScoreSet_t.symArray[].
  150. cmScRC_t cmScoreInitialize( cmCtx_t* ctx, cmScH_t* hp, const cmChar_t* fn, double srate, const unsigned* dynRefArray, unsigned dynRefCnt, cmScCb_t cbFunc, void* cbArg, cmSymTblH_t stH );
  151. cmScRC_t cmScoreFinalize( cmScH_t* hp );
  152. // Filename of last successfuly loaded score file.
  153. const cmChar_t* cmScoreFileName( cmScH_t h );
  154. // Sample rate as set in cmScoreInitialize()
  155. double cmScoreSampleRate( cmScH_t h );
  156. // Validate the score handle
  157. bool cmScoreIsValid( cmScH_t h );
  158. // Access the score data.
  159. unsigned cmScoreEvtCount( cmScH_t h );
  160. cmScoreEvt_t* cmScoreEvt( cmScH_t h, unsigned idx );
  161. // Given a bar number return the associated 'bar' event record.
  162. cmScoreEvt_t* cmScoreBarEvt( cmScH_t h, unsigned barNumb );
  163. // Access section records
  164. unsigned cmScoreSectionCount( cmScH_t h );
  165. cmScoreSection_t* cmScoreSection( cmScH_t h, unsigned idx );
  166. // Access the score location data
  167. unsigned cmScoreLocCount( cmScH_t h );
  168. cmScoreLoc_t* cmScoreLoc( cmScH_t h, unsigned idx );
  169. void cmScorePrintLoc( cmScH_t h );
  170. // Return the location associated with a given score event.
  171. cmScoreLoc_t* cmScoreEvtLoc( cmScH_t h, const cmScoreEvt_t* evt );
  172. // Return the count of sets.
  173. unsigned cmScoreSetCount( cmScH_t h );
  174. unsigned cmScoreMarkerLabelCount( cmScH_t h );
  175. unsigned cmScoreMarkerLabelSymbolId( cmScH_t h, unsigned idx );
  176. const cmScoreMarker_t* cmScoreMarker( cmScH_t h, cmMarkScMId_t markMId, unsigned labelSymId );
  177. // Make callbacks for all events in the score. The callbacks
  178. // contain cmScMsg_t records serialized as a byte stream.
  179. // Use cmScoreDecode() to convert the byte string to a
  180. // cmScMsg_t record.
  181. cmScRC_t cmScoreSeqNotify( cmScH_t h );
  182. cmScRC_t cmScoreSeqNotifyCb( cmScH_t h, cmScCb_t cbFunc, void* cbArg );
  183. void cmScoreClearPerfInfo( cmScH_t h );
  184. // Assign 'smpIdx' and 'vel' to the event matching 'pitch' at 'locIdx'
  185. // but do not trigger any variable calculations. Return true if as a
  186. // result of this call all events assigned to 'locIdx' have been received
  187. // otherwise return false.
  188. bool cmScoreSetPerfEvent( cmScH_t h, unsigned locIdx, unsigned smpIdx, unsigned pitch, unsigned vel );
  189. // Assign 'smpIdx' and 'vel' to the event matching 'pitch' at 'locIdx'
  190. // but and trigger any variable calculations which may happen on, or before, 'locIdx'.
  191. void cmScoreExecPerfEvent( cmScH_t h, unsigned locIdx, unsigned smpIdx, unsigned pitch, unsigned vel );
  192. // Assign 'value' to the section at, or before, 'locIdx'.
  193. void cmScoreSetPerfValue( cmScH_t h, unsigned locIdx, unsigned varId, double value );
  194. // Set the performed dynamic level of a score event.
  195. void cmScoreSetPerfDynLevel( cmScH_t h, unsigned evtIdx, unsigned dynLvl );
  196. typedef enum
  197. {
  198. kInvalidMsgScId,
  199. kBeginMsgScId,
  200. kEventMsgScId,
  201. kSectionMsgScId,
  202. kEndMsgScId,
  203. kVarMsgScId,
  204. kDynMsgScId
  205. } cmScMsgTypeId_t;
  206. typedef struct
  207. {
  208. unsigned varId; // see kXXXVarScId from cmScoreSet_t.varId
  209. double value; // value of a variable
  210. } cmScMeas_t;
  211. typedef struct
  212. {
  213. unsigned evtIdx;
  214. unsigned dynLvl;
  215. } cmScDyn_t;
  216. typedef struct
  217. {
  218. cmScMsgTypeId_t typeId;
  219. union
  220. {
  221. cmScoreEvt_t evt; // only used when typeId == kEventMsgScId
  222. cmScMeas_t meas; // only used when typeId == kVarMsgScId
  223. cmScoreSection_t sect; // only used when typeId == kSectionMsgScId
  224. cmScDyn_t dyn; // only used when typeId == kDynLvlMsgScId
  225. } u;
  226. } cmScMsg_t;
  227. // Decode a serialized cmScMsg_t from a byte stream as passed to the
  228. // cmScCb_t function.
  229. cmScRC_t cmScoreDecode( const void* msg, unsigned msgByteCnt, cmScMsg_t* );
  230. void cmScorePrint( cmScH_t h, cmRpt_t* rpt );
  231. // Generate a new score file from a MIDI file.
  232. cmScRC_t cmScoreFileFromMidi( cmCtx_t* ctx, const cmChar_t* midiFn, const cmChar_t* scoreFn );
  233. void cmScoreTest( cmCtx_t* ctx, const cmChar_t* fn );
  234. //)
  235. #ifdef __cplusplus
  236. }
  237. #endif
  238. #endif