subtitles performance libass/JavascriptSubtitlesOctopus#46 (comment)

wwww-wwww · Nov 8, 2019 · c369070 · c369070
1 parent 83fae05
commit c369070
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Showing 2 changed files with 39 additions and 9 deletions.
diff --git a/assets/static/includes/subtitles-octopus-worker.js b/assets/static/includes/subtitles-octopus-worker.js
diff --git a/assets/static/includes/subtitles-octopus.js b/assets/static/includes/subtitles-octopus.js
@@ -214,14 +214,9 @@ var SubtitlesOctopus = function (options) {
         var data = self.renderFramesData;
         var beforeDrawTime = performance.now();
         self.ctx.clearRect(0, 0, self.canvas.width, self.canvas.height);
-        for (var i = 0; i < data.canvases.length; i++) {
-            var image = data.canvases[i];
-            self.bufferCanvas.width = image.w;
-            self.bufferCanvas.height = image.h;
-            var imageBuffer = new Uint8ClampedArray(image.buffer);
-            var imageData = new ImageData(imageBuffer, image.w, image.h);
-            self.bufferCanvasCtx.putImageData(imageData, 0, 0);
-            self.ctx.drawImage(self.bufferCanvas, image.x, image.y);
+        for (var i = 0; i < data.bitmaps.length; i++) {
+            var image = data.bitmaps[i];
+            self.ctx.drawImage(image.bitmap, image.x, image.y);
         }
         if (self.debug) {
             var drawTime = Math.round(performance.now() - beforeDrawTime);