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ftgentmp

Generate a score function table from within the orchestra, which is deleted at the end of the note.

Syntax

ifno ftgentmp ip1, ip2dummy, isize, igen, iarga, iargb, ...

Initialization

ifno -- either a requested or automatically assigned table number above 100.

ip1 -- the number of the table to be generated or 0 if the number is to be assigned, in which case the table is deleted at the end of the note activation.

ip2dummy -- ignored.

isize -- table size. Corresponds to p3 of the score f statement.

igen -- function table GEN routine. Corresponds to p4 of the score f statement.

iarga, iargb, ... -- function table arguments. Correspond to p5 through pn of the score f statement.

📝 Note

Csound was originally designed to support tables with power of two sizes only. Though this has changed in recent versions (you can use any size by using a negative number), many opcodes will not accept them.

Examples

Here is an example of the ftgentmp opcode. It uses the file ftgentmp.csd.

Example of the ftgentmp opcode.
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<CsoundSynthesizer>
<CsOptions>
</CsOptions>
<CsInstruments>

sr = 44100
ksmps = 128
nchnls = 2
0dbfs = 1

instr 1
ifno  ftgentmp  0, 0, 512, 10, 1
print ifno
endin

instr 2
print ftlen(p4)
endin

</CsInstruments>
<CsScore>
i 1 0 10
i 2 2 1 101
i 1 5 10
i 2 7 1 102
i 2 12 1 101 
i 2 17 1 102 
e
</CsScore>
</CsoundSynthesizer>

The output of this csd shows that the tables are destroyed after the instrument instances that created them terminates, causing an init error if the tables are queried.

SECTION 1:
new alloc for instr 1:
ftable 101:
instr 1:  ifno = 101.000
B  0.000 ..  2.000 T  2.000 TT  2.000 M:  0.00000  0.00000
new alloc for instr 2:
instr 2:  #i0 = 512.000
B  2.000 ..  5.000 T  5.001 TT  5.001 M:  0.00000  0.00000
new alloc for instr 1:
ftable 102:
instr 1:  ifno = 102.000
B  5.000 ..  7.000 T  7.001 TT  7.001 M:  0.00000  0.00000
instr 2:  #i0 = 512.000
B  7.000 .. 12.000 T 11.999 TT 11.999 M:  0.00000  0.00000
INIT ERROR in instr 2: Invalid ftable no. 101.000000
#i0     ftlen.i p4
instr 2:  #i0 = -1.000
B 12.000 - note deleted.  i2 had 1 init errors
B 12.000 .. 17.000 T 17.000 TT 17.000 M:  0.00000  0.00000
INIT ERROR in instr 2: Invalid ftable no. 102.000000
#i0     ftlen.i p4
instr 2:  #i0 = -1.000
B 17.000 - note deleted.  i2 had 1 init errors

See also

Function Table Control

Credits

Authors: Istvan Varga
2005