strcpyk — Assign value to a string variable (k-rate)
Assign to a string variable by copying the source which may be a constant or another string variable. strcpyk does the assignment both at initialization and performance time.
Here is an example of the strcpyk opcode. It uses the file strcpyk.csd.
Example 873. Example of the strcpyk opcode.
See the sections Real-time Audio and Command Line Flags for more information on using command line flags.
<CsoundSynthesizer> <CsOptions> ; Select audio/midi flags here according to platform -odac ;;;realtime audio out ;-iadc ;;;uncomment -iadc if realtime audio input is needed too ; For Non-realtime ouput leave only the line below: ; -o strcpyk.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> sr = 44100 ksmps = 32 nchnls = 2 0dbfs = 1 seed 0 instr 1 ;get one element of the input string whenever the metro ;triggers, and call a subinstrument to play the file Smember strget p4 istrlen strlen Smember kprint init 0 ktrig metro .6 ;whenever the trigger gives signal if ktrig == 1 then ;choose a random element (0, 1 or 2) kel random 0, 3.9999 kel = int(kel) ;make a copy for leaving Smember intact Scopy strcpyk Smember ;set the initial index for reading substrings kndx = 0 ;set counter for searching the element kcount = 0 ;start looping over the elements in Smember loop: kdelim strindexk Scopy, ":" ;as long as ":" occurs in Scopy, do: if kdelim > 0 then ;if this is the element to get if kel == kcount then ;read it as substring Sfile strsubk Scopy, kndx, kdelim kprint = kprint+1 ;and jump out kgoto call ;if not else ;cut off this element from Scopy Scopy strsubk Scopy, kdelim+1, istrlen endif ;if no element has been found,go back to loop ;and look for the next element kcount = kcount+1 kgoto loop ;if there is no delimiter left, the rest is the searched element else Sfile strcpyk Scopy endif call: ;print the result, call the subinstrument and play the file printf "kel = %d, file = '%s'\n", ktrig+kprint, kel, Sfile S_call sprintfk {{i 2 0 1 "%s"}}, Sfile scoreline S_call, ktrig endif endin instr 2 ;play Sfile strget p4 ilen filelen Sfile p3 = ilen asig soundin Sfile outs asig, asig endin </CsInstruments> <CsScore> i 1 0 30 "mary.wav:fox.wav:beats.wav:flute.aiff" e </CsScore> </CsoundSynthesizer>