Update Frames component to use ffprobe-worker.

www/public/ffprobe-worker.js

@@ -1,6 +1,11 @@
 onmessage = (e) => {
-    const file = e.data[0];
+    const type = e.data[0];
+    const file = e.data[1];
 
+    let data;
+
+    switch (type) {
+        case 'get_file_info':
             // Mount FS for files.
             if (!FS.analyzePath('/work').exists) {
                 FS.mkdir('/work');
@@ -23,7 +28,7 @@ onmessage = (e) => {
             };
 
             // Send back data response.
-    const data = {
+            data = {
                 ...info,
                 streams: s,
                 versions,
@@ -32,5 +37,36 @@ onmessage = (e) => {
 
             // Cleanup mount.
             FS.unmount('/work');
+            break;
+        
+        case 'get_frames':
+            if (!FS.analyzePath('/work').exists) {
+                FS.mkdir('/work');
+            }
+            FS.mount(WORKERFS, { files: [file] }, '/work');
+
+            const offset = e.data[2];
+            const frames = Module.get_frames('/work/' + file.name, offset);
+
+            // Remap frames into collection.
+            const f = [];
+            for (let i = 0; i < frames.frames.size(); i++) {
+                f.push(frames.frames.get(i));
+            }
+
+            data = {
+                ...frames,
+                frames: f,
+            }
+            postMessage(data);
+
+            // Cleanup mount.
+            FS.unmount('/work');
+            break;
+    
+        default:
+            break;
+    }
+
 }
 self.importScripts('ffprobe-wasm.js'); // Load ffprobe into worker context.

www/src/components/File.vue

@@ -28,7 +28,7 @@
               </div>
             </b-tab>
             <b-tab title="Frames" class="mt-2" lazy>
-              <Frames />
+              <Frames :file="file" />
             </b-tab>
           </b-tabs>
         </div>
@@ -39,8 +39,6 @@
 import Overview from './Overview.vue';
 import Frames from './Frames.vue';
 
-const worker = new Worker('ffprobe-worker.js');
-
 export default {
   name: 'File',
   components: {
@@ -57,7 +55,7 @@ export default {
     }
   },
   created() {
-    worker.onmessage = (e) => {
+    this.$worker.onmessage = (e) => {
       this.info = e.data;
     }
   },
@@ -68,7 +66,7 @@ export default {
       this.showProgress = true;
 
       const file = event.dataTransfer ? event.dataTransfer.files[0] : event.target.files[0];
-      worker.postMessage([ file ]);
+      this.$worker.postMessage([ 'get_file_info', file ]);
     }
   }
 }

www/src/components/Frames.vue

@@ -1,6 +1,8 @@
 <template>
   <div>
     <h4>Frames</h4>
+    <div v-if="!data">Loading...</div>
+    <div v-if="data">
       <p class="text-right">Total: {{ data.nb_frames }}</p>
 
       <b-pagination
@@ -11,7 +13,7 @@
         align="right"
       ></b-pagination>
 
-    <b-table striped hover :items="frames">
+      <b-table striped hover :items="data.frames">
         <template #cell(pict_type)="data">
           {{ String.fromCharCode(data.value) }}
         </template>
@@ -25,11 +27,13 @@
         align="right"
       ></b-pagination>
     </div>
+  </div>
 </template>
 
 <script>
 export default {
   name: 'Frames',
+  props: ['file'],
   data() {
     return {
       data: null,
@@ -41,22 +45,17 @@ export default {
     pages() {
       return this.data.nb_frames;
     },
-    frames() {
-      if (!this.data) return [];
-
-      const s = [];
-      for (let i = 0; i < this.data.frames.size(); i++) {
-        s.push(this.data.frames.get(i));
-      }
-      return s;
-    },
   },
   created() {
-    this.data = window.Module.get_frames(0);
+    this.$worker.onmessage = (e) => {
+      this.data = e.data;
+    }
+    this.$worker.postMessage([ 'get_frames', this.file, 0 ]);
+
   },
   methods: {
     onPageChanged(page) {
-      this.data = window.Module.get_frames(this.perPage * (page - 1));
+      this.$worker.postMessage([ 'get_frames', this.file, this.perPage * (page - 1) ]);
       window.scrollTo(0, 0);
     },
   }

www/src/main.js

@@ -5,6 +5,9 @@ import App from './App.vue'
 import 'bootstrap/dist/css/bootstrap.css';
 import 'bootstrap-vue/dist/bootstrap-vue.css';
 
+const worker = new Worker('ffprobe-worker.js');
+Vue.prototype.$worker = worker;
+
 Vue.use(BootstrapVue);
 
 Vue.config.productionTip = false