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Title: RK3288 + ov13850 camera module => RAW [Print This Page]

Author: macdam Time: 12/13/2015 23:51
Title: RK3288 + ov13850 camera module => RAW
Last edited by macdam In 12/13/2015 23:53 Editor

Hi,

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

many thanks,

Author: zhansb Time: 12/18/2015 09:10
have a look at : hardware/rockchip/camera/CameraHal/

Author: macdam Time: 12/18/2015 19:07
Is this the path to the driver sources or a location on where I can find a temporary raw file?

Author: zhansb Time: 12/19/2015 11:26
grep the “raw” keyword， you can find out and analys it by youself

Author: Pup-Xav Time: 9/26/2017 00:24
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()

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

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

Author: Pup-Xav Time: 10/27/2017 06:21
Last edited by Pup-Xav In 10/27/2017 15:09 Editor

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 );

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

addRawImageCallbackBuffer.invoke(camera, bytes);

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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 );
...

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

Author: chao98052 Time: 11/3/2017 00:17
I have similar need for raw preview format. Currently preview only support NV21 and Yv12.

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