misc/metatron
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Several less buffers.

Browse Source
This commit is contained in:
Ian Gulliver
2016-01-24 20:54:15 -08:00
parent 1ce29f8310
commit 474816d332
1 changed files with 17 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

36
metatron.js
View File

@@ -89,6 +89,7 @@ metatron.Listener = function(tag) {
this.votes_ = 0;
this.lastValue_ = 0;
this.state_ = metatron.Listener.STATE_.WAIT_TAG;
this.parts_ = [];
this.tag_ = [];
for (var i = 0; i < tag.length; i++) {
@@ -96,7 +97,6 @@ metatron.Listener = function(tag) {
this.tag_.push(chr >> 4);
this.tag_.push(chr % 16);
}
this.tagBuffer_ = [];
navigator.getUserMedia({
"audio": {
@@ -227,53 +227,50 @@ metatron.Listener.prototype.onValue_ = function(value) {
this.lastValue_ = value;
console.log(realValue);
this.parts_.push(realValue);
switch (this.state_) {
case metatron.Listener.STATE_.WAIT_TAG:
this.tagBuffer_.push(realValue);
if (this.tagBuffer_.length > this.tag_.length) {
this.tagBuffer_.shift();
if (this.parts_.length > this.tag_.length) {
this.parts_.shift();
}
if (this.tag_.equals(this.tagBuffer_)) {
if (this.tag_.equals(this.parts_)) {
console.log('tag seen!');
this.state_ = metatron.Listener.STATE_.WAIT_LENGTH;
this.lengthParts_ = [];
this.parts_ = [];
}
break;
case metatron.Listener.STATE_.WAIT_LENGTH:
this.lengthParts_.push(realValue);
if (this.lengthParts_.length == 2) {
if (this.parts_.length == 2) {
this.length_ = 0;
this.lengthParts_.forEach(function(part) {
this.parts_.forEach(function(part) {
this.length_ <<= 4;
this.length_ += part;
}.bind(this));
this.contentsParts_ = [];
this.parts_ = [];
this.state_ = metatron.Listener.STATE_.WAIT_CONTENTS;
}
break;
case metatron.Listener.STATE_.WAIT_CONTENTS:
this.contentsParts_.push(realValue);
if (this.contentsParts_.length == this.length_ * 2) {
if (this.parts_.length == this.length_ * 2) {
var chrs = [];
for (i = 0; i < this.contentsParts_.length; i += 2) {
chrs.push(String.fromCharCode((this.contentsParts_[i] << 4)
+ this.contentsParts_[i + 1]));
for (i = 0; i < this.parts_.length; i += 2) {
chrs.push(String.fromCharCode((this.parts_[i] << 4)
+ this.parts_[i + 1]));
}
this.contents_ = chrs.join('');
this.checksumParts_ = [];
this.parts_ = [];
this.state_ = metatron.Listener.STATE_.WAIT_CHECKSUM;
}
break;
case metatron.Listener.STATE_.WAIT_CHECKSUM:
this.checksumParts_.push(realValue);
if (this.checksumParts_.length == 2) {
if (this.parts_.length == 2) {
var checksum = 0;
this.checksumParts_.forEach(function(part) {
this.parts_.forEach(function(part) {
checksum <<= 4;
checksum += part;
}.bind(this));
@@ -284,6 +281,7 @@ metatron.Listener.prototype.onValue_ = function(value) {
console.log('corrupted message');
}
this.state_ = metatron.Listener.STATE_.WAIT_TAG;
this.parts_ = [];
}
break;
}