Comments (7)
zjupure
commented on May 26, 2024
看了下libwebp库底层是支持RGB_565解码的，需要把config信息传递下去，这个要求webp动画中不含有透明的帧，目前没有实现
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MerlinYu
commented on May 26, 2024
我看了源码，从上层不支持config信息传递，我们的项目大量使用到webp的动态，想优化一下这化图片的内存占用 @zjupure
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zjupure
commented on May 26, 2024
https://github.com/zjupure/GlideWebpDecoder/blob/master/webp_decoder/src/main/jni/webp.cpp#L482
@MerlinYu native层核心decode代码在WebPFrame_nativeRenderFrame()里，传递的Bitmap里有config信息，可以从这里读到解码的格式，然后配置webp的decode参数，解码/渲染等地方需要修改，感兴趣可以先尝试修改下
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zjupure
commented on May 26, 2024
本地修改试了下，webp动画两个关键帧之间几乎都是带alpha通道的，使用RGB_565解码会丢失信息，导致渲染画面时失真。
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ksc91u
commented on May 26, 2024
請問一下這個問題有解嗎？
剛剛測試了最新版的還是沒有透明度
使用範例的這個檔案
https://qidian.qpic.cn/qidian_common/349573/a36f7d7d8a5e15e1cf3c32d05109467a/0
謝謝
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zjupure
commented on May 26, 2024
@ksc91u 这个有什么问题，可以正常渲染，背景就是透明的，你可以修改ImageView的背景色验证
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ksc91u
commented on May 26, 2024
不好意思是我犯傻了, 的確看到的是 ImageView 的背景色, 改成透明就好了, 感謝大大
另外發現, 在我的 app 裡面是因為加上了
.setDefaultTransitionOptions( Bitmap::class.java, BitmapTransitionOptions.withCrossFade(200) )
.setDefaultTransitionOptions( Drawable::class.java, DrawableTransitionOptions.withCrossFade(200) )
在加載一般圖片的時候有特效, 才導致 webp 動畫變成有背景的。
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Related Issues (20)
- java.lang.IndexOutOfBoundsException
- Support for Glide 4.14.2 HOT 2
- NullPointerException in WebpFrameLoader#onFrameReady HOT 1
- 为什么要默认循环播放，是出于什么考虑？ HOT 3
- 加载动图和加载静态图片能合并吗？ HOT 2
- Support for KSP HOT 9
- 希望公开OnEveryFrameListener接口及其set方法 HOT 1
- 加载webp动图，结果图片缩小了 HOT 1
- 使用协程好像会出现多线程问题 HOT 1
- 首帧预览 功能 HOT 2
- 在 onResourceReady call WebpDrawable#stop() 沒有辦法停下動畫 HOT 1
- ImageView宽高为wrap_content时webp动图问题 HOT 3
- How to use in SpannableString with ImageSpan ? HOT 6
- Request: update Glide version HOT 2
- Can't use repository for some reason HOT 5
- 配合共享元素转场动画掉帧卡顿
- Needs to support 4.13.2 HOT 4
- WebpDecoder 多线程问题 HOT 1
- Why not consider adding a method to stop at what frame? HOT 2
- 加载Duration小于20毫秒的webp图片动得很慢 HOT 3
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