43 lines
1.1 KiB
JavaScript
43 lines
1.1 KiB
JavaScript
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var plask = require('plask');
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var fs = require('fs');
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var omggif = require('./omggif');
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if (process.argv.length < 3) throw "Usage: <filename.gif>";
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var buf = fs.readFileSync(process.argv[2]);
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var gr = new omggif.GifReader(buf);
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var pixels = plask.SkCanvas.create(gr.width, gr.height);
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plask.simpleWindow({
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settings: {
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width: 800,
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height: 600
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},
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init: function() {
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var canvas = this.canvas, paint = this.paint;
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canvas.clear(230, 230, 230, 255); // Draw the background, just once.
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},
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draw: function() {
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var canvas = this.canvas, paint = this.paint;
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var frame_num = this.framenum % gr.numFrames();
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var frame_info = gr.frameInfo(frame_num);
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if (frame_num === 0 || frame_info.disposal === 2 /* restore to bg */)
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pixels.clear(0, 0, 0, 255);
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var start = Date.now();
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gr.decodeAndBlitFrameBGRA(frame_num, pixels.pixels || pixels);
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console.log('Decoded and blit frame in: ' + (Date.now() - start) + 'ms');
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canvas.drawCanvas(paint, pixels, 0, 0, gr.width, gr.height);
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var this_ = this;
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setTimeout(function() { this_.redraw(); }, frame_info.delay * 10);
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}
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});
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