有没有人设法获得使用RenderScript和新相机API一个YUV_420_888框架？ [英] Has anyone managed to obtain a YUV_420_888 frame using RenderScript and the new Camera API?

问题描述

我使用RenderScript和分配，以获得从Android摄像机2 API YUV_420_888框架，但一旦我从分配复制字节[]我只收到3架飞机组成该帧的Y平面，而U和V平面值在字节[]设置为0。我试图模仿从previos相机API上previewframe为了在镜头帧的处理程序来执行。我的配置是一样创建：

  Type.Builder yuvTypeBuilderIn =新Type.Builder（RS，Element.YUV（RS））;
    yuvTypeBuilderIn.setX（dimensions.getWidth（））;
    yuvTypeBuilderIn.setY（dimensions.getHeight（））;
    yuvTypeBuilderIn.setYuvFormat（ImageFormat.YUV_420_888）;
    分配= Allocation.createTyped（RS，yuvTypeBuilderIn.create（）
            Allocation.USAGE_IO_INPUT | Allocation.USAGE_SCRIPT）;
 

而我的剧本是这样的：

 的#pragma版（1）
RS的#pragma java_package_name（my_package）
的#pragma rs_fp_relaxedrs_allocation my_frame;
 

解决方案

Android的示例应用程序HdrViewfinderDemo使用RenderScript从摄像机2处理YUV数据。

https://github.com/googlesamples/android-HdrViewfinder

具体而言，在<一href=\"https://github.com/googlesamples/android-HdrViewfinder/blob/master/Application/src/main/java/com/example/android/hdrviewfinder/ViewfinderProcessor.java\"相对=nofollow> ViewfinderProcessor ​​设置了分配和<一个href=\"https://github.com/googlesamples/android-HdrViewfinder/blob/master/Application/src/main/rs/hdr_merge.rs\"相对=nofollow> hdr_merge.rs 从中读取。

I'm using RenderScript and Allocation to obtain YUV_420_888 frames from the Android Camera2 API, but once I copy the byte[] from the Allocation I receive only the Y plane from the 3 planes which compose the frame, while the U and V planes values are set to 0 in the byte[]. I'm trying to mimic the onPreviewframe from the previos camera API in order to perform in app processing of the camera frames. My Allocation is created like:

Type.Builder yuvTypeBuilderIn = new Type.Builder(rs, Element.YUV(rs));
    yuvTypeBuilderIn.setX(dimensions.getWidth());
    yuvTypeBuilderIn.setY(dimensions.getHeight());
    yuvTypeBuilderIn.setYuvFormat(ImageFormat.YUV_420_888);
    allocation = Allocation.createTyped(rs, yuvTypeBuilderIn.create(),
            Allocation.USAGE_IO_INPUT | Allocation.USAGE_SCRIPT);

while my script looks like:

#pragma version(1)
#pragma rs java_package_name(my_package)
#pragma rs_fp_relaxed

rs_allocation my_frame;

解决方案

The Android sample app HdrViewfinderDemo uses RenderScript to process YUV data from camera2.

https://github.com/googlesamples/android-HdrViewfinder

Specifically, the ViewfinderProcessor sets up the Allocations, and hdr_merge.rs reads from them.

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