Merge pull request #32 from Laurian/master

alignSTTwithPadding (workaround for low word count freezing alignSTT)

Author: Laurian

.nvmrc

@@ -0,0 +1 @@
+lts/gallium

demo/main.bundle.js

@@ -0,0 +1,45 @@
+// const alignSTT = require('@bbc/stt-align-node').alignSTT;
+const alignSTT = require("../src/index.js").alignSTT;
+
+// Note: this freezes, see the example usage with padding as a workaround
+
+const transcriptText = "friend to hold";
+
+const transcriptSttTest = {
+  words: [
+    {
+      start: 16.27,
+      end: 16.65,
+      text: "friend",
+    },
+    {
+      text: "2",
+    },
+    {
+      start: 16.74,
+      end: 17.2,
+      text: "held",
+    },
+  ],
+};
+
+const result = alignSTT(transcriptSttTest, transcriptText, 16.19, 17.2);
+console.log(JSON.stringify(result, null, 2));
+
+/* original timings
+{
+"start": 16.27,
+"end": 16.65,
+"text": "friend"
+},
+{
+"start": 16.65,
+"end": 16.74,
+"text": "to"
+},
+{
+"start": 16.74,
+"end": 17.2,
+"text": "hold"
+},
+*/

example-usage/example-usage-freeze.js

@@ -0,0 +1,58 @@
+// const alignSTT = require('@bbc/stt-align-node').alignSTT;
+const alignSTT = require("../src/index.js").alignSTT;
+
+const transcriptText = "friend to hold MFJrgRpKH pbTFFLsRk vRzcmnrnT";
+
+const transcriptSttTest = {
+  words: [
+    {
+      start: 16.27,
+      end: 16.65,
+      text: "friend",
+    },
+    {
+      text: "2",
+    },
+    {
+      start: 16.74,
+      end: 17.2,
+      text: "held",
+    },
+    {
+      start: 17.2,
+      end: 17.2,
+      text: "MFJrgRpKH",
+    },
+    {
+      start: 17.2,
+      end: 17.2,
+      text: "pbTFFLsRk",
+    },
+    {
+      start: 17.2,
+      end: 17.2,
+      text: "vRzcmnrnT",
+    },
+  ],
+};
+
+const result = alignSTT(transcriptSttTest, transcriptText, 16.19, 17.2);
+console.log(JSON.stringify(result, null, 2));
+
+/* original timings
+{
+"start": 16.27,
+"end": 16.65,
+"text": "friend"
+},
+{
+"start": 16.65,
+"end": 16.74,
+"text": "to"
+},
+{
+"start": 16.74,
+"end": 17.2,
+"text": "hold"
+},
+*/

example-usage/example-usage-pad-right.js

@@ -0,0 +1,79 @@
+// const alignSTT = require('@bbc/stt-align-node').alignSTT;
+const alignSTT = require("../src/index.js").alignSTT;
+const alignSTTwithPadding = require("../src/index.js").alignSTTwithPadding;
+
+const transcriptText = "friend to hold";
+
+const transcriptSttTest = {
+  words: [
+    {
+      start: 16.27,
+      end: 16.65,
+      text: "friend",
+    },
+    {
+      text: "2",
+    },
+    {
+      start: 16.74,
+      end: 17.2,
+      text: "held",
+    },
+  ],
+};
+
+// this freezes:
+// const result = alignSTT(transcriptSttTest, transcriptText, 16.19, 17.2);
+
+// const start = 16.19;
+// const end = 17.2;
+// const PADLEFT = "Nwxskfsxn HHLPdJNbX KRrdghXzJ";
+// const PADRIGHT = "XxjzKsmwK pHcdxnFch LmLXFdCVr";
+
+// const result = alignSTT(
+//   {
+//     words: [
+//       ...PADLEFT.split(" ").map((text) => ({ start, end: start, text })),
+//       ...transcriptSttTest.words,
+//       ...PADRIGHT.split(" ").map((text) => ({ start: end, end, text })),
+//     ],
+//   },
+//   `${PADLEFT} ${transcriptText} ${PADRIGHT}`,
+//   start,
+//   end
+// );
+
+// console.log(JSON.stringify(result, null, 2));
+// console.log(
+//   JSON.stringify(
+//     result.slice(PADLEFT.split(" ").length, -PADRIGHT.split(" ").length),
+//     null,
+//     2
+//   )
+// );
+
+const result2 = alignSTTwithPadding(
+  transcriptSttTest,
+  transcriptText,
+  16.19,
+  17.2
+);
+console.log(JSON.stringify(result2, null, 2));
+
+/* original timings
+{
+"start": 16.27,
+"end": 16.65,
+"text": "friend"
+},
+{
+"start": 16.65,
+"end": 16.74,
+"text": "to"
+},
+{
+"start": 16.74,
+"end": 17.2,
+"text": "hold"
+},
+*/