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update backgroundsubtractor example to test release of mat before bg is finished in async

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This commit is contained in:
Simon Hailes 2017-11-12 15:49:47 +00:00
parent e0087841bd
commit 622575bfb6
1 changed files with 15 additions and 5 deletions
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20
examples/bgsubtractor.js
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@ -3,9 +3,10 @@ var path = require('path'),
var bg = null;
require("v8").setFlagsFromString('--expose_gc');
var gc = require("vm").runInNewContext('gc');
// gc stuff which we shojld not need with release() begin used
//require("v8").setFlagsFromString('--expose_gc');
//var gc = require("vm").runInNewContext('gc');
var do_sync = function(done){
// When opening a file, the full path must be passed to opencv
@ -17,15 +18,20 @@ var do_sync = function(done){
vid.read(function(err, m2){
if (err) throw err;
var mat = bg.apply(m2);
m2.release();
delete m2;
// mat is a monochrome img where moving objects are white
// do something with the return data
// we are done with the return data
mat.release();
delete mat;
if (x++<100){
//console.log("iter "+x);
setTimeout(iter, 1);
} else {
delete vid;
console.log("bg sync done");
gc();
// gc(); - no need to gc if we release both m2 and mat
if (undefined !== done)
done();
}
@ -45,7 +51,10 @@ var do_async = function(done){
vid.read(function(err, m2){
if (err) throw err;
bg.apply(m2, function(err, mat){
delete mat;
// do something with the return data
// we are done with the return data
mat.release();
delete mat;
if (err) throw err;
// mat is a monochrome img where moving objects are white
if (x++<100){
@ -54,11 +63,12 @@ var do_async = function(done){
} else {
console.log("bg async done");
delete vid;
gc();
// gc(); - no need to gc if we release both m2 and mat
if (undefined !== done)
done();
}
});
m2.release();
})
};