Docker support #2, Fixes #4, dynamic imports

2025-06-28 05:08:00 +02:00 · 2022-07-29 19:21:59 +00:00 · 2022-07-29 19:21:59 +00:00 · 7273fcabc8
commit 7273fcabc8
parent 2838030839
10 changed files with 696 additions and 246 deletions
--- a/src/scripts/dash.js
+++ b/src/scripts/dash.js
@ -0,0 +1,120 @@
+import { Buffer } from 'buffer';
+window.Buffer = Buffer;
+import { json2xml } from 'xml-js';
+
+export function useDash(streams, len) {
+  const sets = [],
+    mimes = [[]],
+    mimeTypes = [];
+
+  streams.forEach(stream => {
+    const i = mimeTypes.indexOf(stream.mimeType);
+
+    if (i > -1) {
+      mimes[i].push(stream);
+    } else {
+      mimeTypes.push(stream.mimeType);
+      mimes.push([]);
+      mimes[mimeTypes.length - 1].push(stream);
+    }
+  });
+
+  for (let i in mimeTypes) {
+    const set = {
+      type: 'element',
+      name: 'AdaptationSet',
+      attributes: {
+        id: i,
+        mimeType: mimeTypes[i],
+        startWithSAP: '1',
+        subsegmentAlignment: 'true',
+      },
+      elements: [],
+    };
+
+    mimes[i].forEach(format => {
+      const audio = {
+        type: 'element',
+        name: 'Representation',
+        attributes: {
+          id: format.itag,
+          codecs: format.codec,
+          bandwidth: format.bitrate,
+        },
+        elements: [
+          {
+            type: 'element',
+            name: 'AudioChannelConfiguration',
+            attributes: {
+              schemeIdUri:
+                'urn:mpeg:dash:23003:3:audio_channel_configuration:2011',
+              value: '2',
+            },
+          },
+          {
+            type: 'element',
+            name: 'BaseURL',
+            elements: [
+              {
+                type: 'text',
+                text: format.url,
+              },
+            ],
+          },
+          {
+            type: 'element',
+            name: 'SegmentBase',
+            attributes: {
+              indexRange: `${format.indexStart}-${format.indexEnd}`,
+            },
+            elements: [
+              {
+                type: 'element',
+                name: 'Initialization',
+                attributes: {
+                  range: `${format.initStart}-${format.initEnd}`,
+                },
+              },
+            ],
+          },
+        ],
+      };
+
+      set.elements.push(audio);
+    });
+
+    sets.push(set);
+  }
+
+  const gen = {
+    declaration: {
+      attributes: {
+        version: '1.0',
+        encoding: 'utf-8',
+      },
+    },
+    elements: [
+      {
+        type: 'element',
+        name: 'MPD',
+        attributes: {
+          xmlns: 'urn:mpeg:dash:schema:mpd:2011',
+          profiles: 'urn:mpeg:dash:profile:full:2011',
+          minBufferTime: 'PT1.5S',
+          type: 'static',
+          mediaPresentationDuration: `PT${len}S`,
+        },
+        elements: [
+          {
+            type: 'element',
+            name: 'Period',
+            elements: sets,
+          },
+        ],
+      },
+    ],
+  };
+
+  console.log(json2xml(gen));
+  return json2xml(gen);
+}