I know you just draw on the screen, but I need a more literal explanation about what they're for and how they're used and how they're used in Genome.
#Purebasic play midi file how to#
It's not that there's any issue with their function, but I'm not familiar with how they're used and how to set them up correctly in a sequence. As well as the envelope draw (velocity/length/timing) The only trouble I'm having at the moment, has to do with the modwheel and various cc parameter controls. I've been able to figure out most of it's functionality intuitively and have successfully connected to most of my synths, etc. I don't have much to compare it too, but so far I really like it. Procedure.l ParseMidiChunk(File.l, *Chunk.I know ModStep is very popular, but is anyone using Genome?īought it recently on sale. Result = Handler(Time, MetaEvent, Size, *Buffer) Handler = EventHandlers(#MidiParser_Event_Meta) Procedure.l ParseMidiMeta(File.l, Time.l, MetaEvent.l) Handler = EventHandlers(#MidiParser_Event_System) Procedure.l ParseMidiSystem(File.l, Time.l, Event.l) Result = Handler(Time, Event, Size, *Buffer) Handler = EventHandlers(#MidiParser_Event_SysEx)
Procedure.l ParseMidiSysEx(File.l, Time.l, Event.l) Result = Handler(Time, Event, Channel, Param1, Param2) Handler = EventHandlers(#MidiParser_Event_Command) the command is valid so parsing continues RaiseMidiError(#MidiParser_Error_Command) If Value - = #MIDI_Track_Single And *Header\wTrack $C And Event $D Procedure.l VarLenSize(Value.l, IsVarLen.l = #False) If IsFile(File) And VarLen #MIDI_VarLen_Error *VarLen = | (*VarLen\b & $7F) NumToVarLen(Num) Tempo Set Tempo (BPM) : " + StrD(60 * 1000 * 1000 / Tempo)ĭebug "Finished (" + Str(nTracks) + " tracks found)"įor now i only pass through the events (and meta-events) i don't debug but i made it like Zapman so it is simple to add what's missing. S$ + " Note On : " + Str(Note) + " Velocity : " + Str(Velocity) S$ = Str(Time) + " -> Channel : " + Str(Channel) S$ + " Note Off : " + Str(Note) + " Velocity : " + Str(Velocity) While Not (Event = $FF And MetaEvent = $2F) While Not EndOfTrack If Not Error And Chunk\dwType = #MIDI_Chunk_Track > - #MIDI_Chunk_Trackĭebug "UnknownChunk : " + PeekS(Chunk, 4), 1 OpenWindow(0, 0, 0,0,0, #WS_OVERLAPPEDWINDOW | #WS_MAXIMIZE,"Read MIDI header")Ĭode: Select all > - > 0) & $7F ProcedureReturn LOF LOF= len of header and start of data
HMF = AllocateMemory(Lof()) all file to memory Procedure MFload() hMF= address of the starting memory For the MIDIfileįilename$ = OpenFileRequester("Load MIDI file", "*C:\.mid", "MIDI |*.mid", 0) MessageRequester("STOP", "Header " + a$ + " UNKNOWN", 0)
ProcedureReturn LenHd returns Len of header dataĭebug Str(LenTrk) + "=Length of Track data" 4 char ASC: M,T,h,d = header chunk - M,T,r,k = track header chunkĭebug Str(LenHd) + "=Length of header data" Procedure HeaderData(*PO) reads 3 16-bit words stored MSB first 6 Bytes lengthĭebug Str(TimRes) + "=Number of delta-time ticks on a quarter note" Procedure.l P4(*PO) returns 4 Little Endian Bytes from *PO Procedure.w P2(*PO) returns 2 Little Endian bytes from *PO
Procedure.s PS(*PO, LE) get string LE bytes from *POĪ$ = Space(LE) get Titles, Lyrics,Instrument names and other strings embedded on the Midi streamĬopyMemory(*PO, LE) beware: only valid for strings other data content many chr(0) Thanks Psychophanta For the Little Endian ASM procedures
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