nwhetsell
commented
7 years ago Some kind of test case may be necessary to help resolve this issue. Running in Node.js a JavaScript file containing
const csound = require('csound-api');
const Csound = csound.Create();
const orchestra = `
0dbfs = 1
instr SawtoothSweep
outc vco2(0.5 * 0dbfs, expseg(110, 1, 220, 1, 110))
endin
`;
const score = `
i "SawtoothSweep" 0 2
e
`;
csound.SetOption(Csound, '--output=dac');
csound.CompileOrc(Csound, orchestra);
csound.ReadScore(Csound, score);
if (csound.Start(Csound) === csound.SUCCESS) {
console.log('\n==> Starting first performance...\n');
csound.PerformAsync(Csound, result => {
console.log(`\n==> First performance stopped with result ${result}\n`);
csound.Reset(Csound);
csound.SetOption(Csound, '--output=dac');
csound.CompileOrc(Csound, orchestra);
csound.ReadScore(Csound, score);
if (csound.Start(Csound) === csound.SUCCESS) {
console.log('\n==> Starting second performance...\n');
csound.PerformAsync(Csound, result => {
console.log(`\n==> Second performance stopped with result ${result}\n`);
csound.Destroy(Csound);
});
}
});
// This stops the first performance after about one second.
setTimeout(() => csound.Stop(Csound), 1000);
}should result in two performances of the same orchestra and score (based on this example). The second performance begins after stopping and resetting an instance of Csound. When I run that script in Node.js 7.5.0 on macOS 10.12.3, I get the expected result (I’ve included Csound’s output below). What happens when you run that script in Node.js?
There shouldn’t be a need for a function to stop csound.PerformAsync; csound.Stop should do this already. Also, note that this Addon is written in C++, not C#.
Here is Csound’s output when I run the above script:
virtual_keyboard real time MIDI plugin for Csound
WARNING: STK opcodes not available: define environment variable RAWWAVE_PATH
(points to rawwaves directory) to use STK opcodes.
0dBFS level = 32768.0
--Csound version 6.08 (double samples) Nov 23 2016
[commit: a1159a1e12a1095c4607f7162c44b196f5143959]
libsndfile-1.0.25
instr SawtoothSweep uses instrument number 1
WARNING: STK opcodes not available: define environment variable RAWWAVE_PATH
(points to rawwaves directory) to use STK opcodes.
rtaudio: PortAudio module enabled ...
using callback interface
rtmidi: PortMIDI module enabled
graphics suppressed, ascii substituted
0dBFS level = 1.0
orch now loaded
audio buffered in 1024 sample-frame blocks
PortAudio V19-devel (built Feb 12 2010 09:42:54)
0: dac0 (Built-in Output)
PortAudio: selected output device 'Built-in Output'
writing 1024 sample blks of 64-bit floats to dac
SECTION 1:
==> Starting first performance...
new alloc for instr SawtoothSweep:
csoundPerform(): stopped.
==> First performance stopped with result 0
resetting Csound instance
inactive allocs returned to freespace
end of score. overall amps: 0.58529
overall samples out of range: 0
0 errors in performance
Elapsed time at end of performance: real: 1.074s, CPU: 0.053s
closing device
38 1024 sample blks of 64-bit floats written to dac
virtual_keyboard real time MIDI plugin for Csound
WARNING: STK opcodes not available: define environment variable RAWWAVE_PATH
(points to rawwaves directory) to use STK opcodes.
0dBFS level = 32768.0
--Csound version 6.08 (double samples) Nov 23 2016
[commit: a1159a1e12a1095c4607f7162c44b196f5143959]
libsndfile-1.0.25
instr SawtoothSweep uses instrument number 1
WARNING: STK opcodes not available: define environment variable RAWWAVE_PATH
(points to rawwaves directory) to use STK opcodes.
rtaudio: PortAudio module enabled ...
using callback interface
rtmidi: PortMIDI module enabled
0dBFS level = 1.0
orch now loaded
audio buffered in 1024 sample-frame blocks
PortAudio V19-devel (built Feb 12 2010 09:42:54)
0: dac0 (Built-in Output)
PortAudio: selected output device 'Built-in Output'
writing 1024 sample blks of 64-bit floats to dac
SECTION 1:
==> Starting second performance...
new alloc for instr SawtoothSweep:
B 0.000 .. 2.000 T 2.000 TT 2.000 M: 0.58539
Score finished in csoundPerform().
==> Second performance stopped with result 2
inactive allocs returned to freespace
end of score. overall amps: 0.58539
overall samples out of range: 0
0 errors in performance
Elapsed time at end of performance: real: 2.002s, CPU: 0.020s
closing device
87 1024 sample blks of 64-bit floats written to dac
hlolli
As I'm running this API on clojurescript I'm not sure if a reproduceable code makes much sense. But no matter how I try, restarting csound instance is impossible. The nodejs repl becomes unresponsive after stopping, resetting, destroyng ore cleanup-ing a csound instance. Maybe a special function to stop PerformAsync would make sense as I'm assumeing that in the c# code it's a pointer to a concurrent function? (where some signal within that function would stop the concurrent loop).