将 android.media.Image (YUV_420_888) 转换为 Bitmap [英] Convert android.media.Image (YUV_420_888) to Bitmap

问题描述

我正在尝试使用此处提出的 camera2 api 实现相机预览图像数据处理:使用 Android L 和 Camera2 API 处理相机预览图像数据.

I'm trying to implement camera preview image data processing using camera2 api as proposed here: Camera preview image data processing with Android L and Camera2 API.

我使用 onImageAvailableListener 成功接收到回调，但为了以后的处理，我需要从 YUV_420_888 android.media.Image 获取位图.我搜索了类似的问题，但都没有帮助.

I successfully receive callbacks using onImageAvailableListener, but for future processing I need to obtain bitmap from YUV_420_888 android.media.Image. I searched for similar questions, but none of them helped.

您能否建议我如何将 android.media.Image (YUV_420_888) 转换为 Bitmap 或者有更好的方式来监听预览帧?

Could you please suggest me how to convert android.media.Image (YUV_420_888) to Bitmap or maybe there's a better way of listening for preview frames?

推荐答案

我写了一些关于这个的代码，它是 YUV 数据预览并将其转换为 JPEG 数据，我可以用它来保存为位图 ,byte[]，或其他.(您可以看到类分配").

并且 SDK 文档说:
为了使用 android.renderscript 进行高效的 YUV 处理:使用支持的 YUV 类型、IO_INPUT 标志和 getOutputSizes(Allocation.class) 返回的大小之一创建 RenderScript Allocation，然后获取表面与 getSurface()."

下面是代码，希望对你有帮助:https://github.com/pinguo-yuyidong/Camera2/blob/master/camera2/src/main/rs/yuv2rgb.rs

I write some code about this, and it's the YUV datas preview and chang it to JPEG datas ,and I can use it to save as bitmap ,byte[] ,or others.(You can see the class "Allocation" ).

And SDK document says:
"For efficient YUV processing with android.renderscript: Create a RenderScript Allocation with a supported YUV type, the IO_INPUT flag, and one of the sizes returned by getOutputSizes(Allocation.class), Then obtain the Surface with getSurface()."

here is the code, hope it will help you:https://github.com/pinguo-yuyidong/Camera2/blob/master/camera2/src/main/rs/yuv2rgb.rs

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