code-decoder.js
6.81 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (g && (g = 0, op[0] && (_ = 0)), _) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.Html5QrcodeShim = void 0;
var zxing_html5_qrcode_decoder_1 = require("./zxing-html5-qrcode-decoder");
var native_bar_code_detector_1 = require("./native-bar-code-detector");
var Html5QrcodeShim = (function () {
function Html5QrcodeShim(requestedFormats, useBarCodeDetectorIfSupported, verbose, logger) {
this.EXECUTIONS_TO_REPORT_PERFORMANCE = 100;
this.executions = 0;
this.executionResults = [];
this.wasPrimaryDecoderUsedInLastDecode = false;
this.verbose = verbose;
if (useBarCodeDetectorIfSupported
&& native_bar_code_detector_1.BarcodeDetectorDelegate.isSupported()) {
this.primaryDecoder = new native_bar_code_detector_1.BarcodeDetectorDelegate(requestedFormats, verbose, logger);
this.secondaryDecoder = new zxing_html5_qrcode_decoder_1.ZXingHtml5QrcodeDecoder(requestedFormats, verbose, logger);
}
else {
this.primaryDecoder = new zxing_html5_qrcode_decoder_1.ZXingHtml5QrcodeDecoder(requestedFormats, verbose, logger);
}
}
Html5QrcodeShim.prototype.decodeAsync = function (canvas) {
return __awaiter(this, void 0, void 0, function () {
var startTime;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
startTime = performance.now();
_a.label = 1;
case 1:
_a.trys.push([1, , 3, 4]);
return [4, this.getDecoder().decodeAsync(canvas)];
case 2: return [2, _a.sent()];
case 3:
this.possiblyLogPerformance(startTime);
return [7];
case 4: return [2];
}
});
});
};
Html5QrcodeShim.prototype.decodeRobustlyAsync = function (canvas) {
return __awaiter(this, void 0, void 0, function () {
var startTime, error_1;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
startTime = performance.now();
_a.label = 1;
case 1:
_a.trys.push([1, 3, 4, 5]);
return [4, this.primaryDecoder.decodeAsync(canvas)];
case 2: return [2, _a.sent()];
case 3:
error_1 = _a.sent();
if (this.secondaryDecoder) {
return [2, this.secondaryDecoder.decodeAsync(canvas)];
}
throw error_1;
case 4:
this.possiblyLogPerformance(startTime);
return [7];
case 5: return [2];
}
});
});
};
Html5QrcodeShim.prototype.getDecoder = function () {
if (!this.secondaryDecoder) {
return this.primaryDecoder;
}
if (this.wasPrimaryDecoderUsedInLastDecode === false) {
this.wasPrimaryDecoderUsedInLastDecode = true;
return this.primaryDecoder;
}
this.wasPrimaryDecoderUsedInLastDecode = false;
return this.secondaryDecoder;
};
Html5QrcodeShim.prototype.possiblyLogPerformance = function (startTime) {
if (!this.verbose) {
return;
}
var executionTime = performance.now() - startTime;
this.executionResults.push(executionTime);
this.executions++;
this.possiblyFlushPerformanceReport();
};
Html5QrcodeShim.prototype.possiblyFlushPerformanceReport = function () {
if (this.executions < this.EXECUTIONS_TO_REPORT_PERFORMANCE) {
return;
}
var sum = 0;
for (var _i = 0, _a = this.executionResults; _i < _a.length; _i++) {
var executionTime = _a[_i];
sum += executionTime;
}
var mean = sum / this.executionResults.length;
console.log("".concat(mean, " ms for ").concat(this.executionResults.length, " last runs."));
this.executions = 0;
this.executionResults = [];
};
return Html5QrcodeShim;
}());
exports.Html5QrcodeShim = Html5QrcodeShim;
//# sourceMappingURL=code-decoder.js.map