RK3288 + ov13850 camera module => RAW

Chip Platform Rockchip
1

Hi,

Is there a way to retrieve RAW images from the camera module using android 5.1?

many thanks,

2

have a look at : hardware/rockchip/camera/CameraHal/

3

Is this the path to the driver sources or a location on where I can find a temporary raw file?

4

grep the “raw” keyword， you can find out and analys it by youself

5

Hi.
Like Macdam, I’m also looking for RAW format.
As a java/android developer, i’m not satisfied by Zhansb reply.

calling camera1 api :

camera.getParameters().getSupportedPictureFormats()

returns only one value ==> 256 which is the JPEG format as documented in android SDK (https://developer.android.com/reference/android/graphics/ImageFormat.html)

Is there any plan to support RAW/YUV format ?
Is there any workaround to get this format?

6

I was able to get a “raw” (YUV422) picture with android 5.1 running on a rk3288.
The Camera.takePicture() method takes a callback for raw as second parameter.

camera.takePicture ( shutterCallback, rawCallback, jpegCallback );

This callback will return a null byteArray, unless you explicitly add a buffer for raw image .

addRawImageCallbackBuffer.invoke(camera, bytes);

Surprisingly, the method is public but not exported, so you cannot call it directly.
The pseudo-code below demonstrate how to call it by reflection.

...
byte[] bytes = new byte[100000000]);
android.hardware.Camera  camera = Camera.Open();
...
   try {
        final Method addRawImageCallbackBuffer =
                camera.getClass()
                       .getDeclaredMethod("addRawImageCallbackBuffer",
                                          byte[].class);
        addRawImageCallbackBuffer.invoke(camera0, bytes);
    } catch (Exception e) {
        Log.e("RNG", "Error", e);
    }
...
camera.takePicture ( shutterCallback, rawCallback, jpegCallback );
...

For reference : https://stackoverflow.com/questi … and-raw-takepicture

7

I have similar need for raw preview format. Currently preview only support NV21 and Yv12.

8

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