问题描述
限时送ChatGPT账号..有没有办法找出完成一个单循环动画 GIF 需要多长时间?
Is there a way to find out how long a single-loop animated GIF will take to finish?
推荐答案
嗯,具体细节取决于你使用什么界面来操作这些动画 GIF(我不知道原生 Java 中的真正巧妙的方式/AWT/Swing),但基本思想是计算(帧率*帧数).
Well, the specifics sorta depends on what interface you're using to manipulate those animated GIFs (I'm not aware of a real slick way in native Java/AWT/Swing), however the basic idea would to calculate (frame rate * number of frames).
如果您正在手动编写 GIF 操作工具,我建议您查看 http://www.onicos/staff/iz/formats/gif.html
If you're coding a GIF manipulation tool by hand, I recommend taking a look at http://www.onicos/staff/iz/formats/gif.html
希望这至少有一点帮助.
Hope this helps at least a little.
更新:尝试实现 ImageObserver 接口.查看该类中的 ImageObserver.FRAMEBITS 标志以检测帧更新.http://docs.oracle/javase/6/docs/api/java/awt/image/ImageObserver.html
Update: Try implement the ImageObserver interface. Take a look at the ImageObserver.FRAMEBITS flag in that class to detect frame updates. http://docs.oracle/javase/6/docs/api/java/awt/image/ImageObserver.html
这仍然留下了 gif 有多少帧的问题.您可能想尝试查看 Image.getProperty() 函数.我在查找有关是否存在框架"属性的文档时遇到了一些困难,但请查看.
This still leaves the question of how many frames the gif has. You might want to try taking a look at the Image.getProperty() function. I'm having some difficulty finding documentation as to whether there's a "frame" property, but take a look.
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