Is there a simple way to turn the byte array from the camera's onPreviewFrame into a picture in android?

Question

I ask if there is a simple way because there is a google issue report saying that using decodeByteArray isn\'t possible. But that report originated in 2008 and I was hoping

Answer 1

The easiest way is to create a BufferedImage the following way:

Bitmap bitmap = BitmapFactory.decodeByteArray(data, 0. data.length);

data is the byte array.

Answer 2

I'm assuming your byte array is from the camera preview? If so you have to decode it but with 2.2 it's quite easy now.

Create a YUV image from the byte array as the data will only be in ImageFormat.NV21( int code 17)

img = new YuvImage(imgData, ImageFormat.NV21, width, height, null);

Create a rectangle the same size as the image.

Create a ByteArrayOutputStream and pass this, the rectangle and the compression value to compressToJpeg().

Then you can use

Bitmap mBitmap = BitmapFactory.decodeByteArray(outputStream.toByteArry(),0,outputStream.size());

I use this for every frame in the callback and it works fine. Hope this helps.