Created
January 5, 2022 00:27
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ImageDecoder stress test
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <title>ImageDecoder memory usage test</title> | |
| </head> | |
| <body> | |
| <script> | |
| async function run() { | |
| async function renderAnimatedImage(url) { | |
| let data = await fetch(url); | |
| let decoder = new ImageDecoder({ | |
| type: 'image/webp', | |
| data: await data.arrayBuffer(), | |
| premultiplyAlpha: 'premultiply', | |
| colorSpaceConversion: 'default', | |
| preferAnimation: true | |
| }); | |
| await decoder.tracks.ready; | |
| await decoder.completed; | |
| let frameCount = decoder.tracks[0].frameCount; | |
| let canvas = document.createElement('canvas'); | |
| canvas.width = 100; | |
| canvas.height = 100; | |
| canvas.style.width = '100px'; | |
| canvas.style.height = '100px'; | |
| document.body.append(canvas); | |
| let ctx = canvas.getContext('2d'); | |
| let frameIndex = 0; | |
| while (true) { | |
| let decodeResult = await decoder.decode({frameIndex: frameIndex}); | |
| let frame = decodeResult.image; | |
| ctx.save(); | |
| ctx.scale(100 / frame.displayWidth, 100 / frame.displayHeight); | |
| ctx.drawImage(frame, 0, 0); | |
| ctx.restore(); | |
| frameIndex = (frameIndex + 1) % frameCount; | |
| let timer = new Promise((resolve, reject) => { | |
| setTimeout(resolve, frame.duration / 1000); | |
| frame.close(); | |
| }); | |
| await timer; | |
| } | |
| } | |
| let urls = [ | |
| 'https://media4.giphy.com/media/Ve1cBYXUmh6iyuYSnF/giphy.webp', | |
| 'https://media3.giphy.com/media/fZ31GBoN4EOUb83rIt/giphy.webp', | |
| 'https://media4.giphy.com/media/wP4T2q2sb9vqgz4GZ1/giphy.webp', | |
| 'https://media1.giphy.com/media/RgGfMHu2HLKLwGeGFb/giphy.webp', | |
| 'https://media0.giphy.com/media/3o7TKtpfZ3e8rwww7K/giphy.webp', | |
| 'https://media1.giphy.com/media/4nKnhZsY9mNX9n928r/giphy.webp', | |
| 'https://media4.giphy.com/media/8Rqk3cKgw799pM8U1a/giphy.webp', | |
| 'https://media3.giphy.com/media/3ov9jSfDqguXOoLfhu/giphy.webp', | |
| 'https://media4.giphy.com/media/yh4Q1Hft8zzUgzOybI/giphy.webp', | |
| 'https://media4.giphy.com/media/SF9v8zMYhyvLn9GTTH/giphy.webp', | |
| 'https://media0.giphy.com/media/BwPYESM1eTKgozrKnT/giphy.webp', | |
| 'https://media2.giphy.com/media/Gx9iROMAiZmFtAopIJ/giphy.webp', | |
| 'https://media1.giphy.com/media/wyyqRSqoWGSiP66G6a/giphy.webp', | |
| 'https://media2.giphy.com/media/SWUneSnAJCgy1qSfNG/giphy.webp', | |
| 'https://media0.giphy.com/media/l6oX5SS8vA5n7GSXG2/giphy.webp', | |
| 'https://media2.giphy.com/media/QBpi7TeiDCgQ59VH1O/giphy.webp' | |
| ]; | |
| for (let url of urls) { | |
| renderAnimatedImage(url); | |
| } | |
| } | |
| run(); | |
| </script> | |
| </body> | |
| </html> |
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