Data from ImageAnalysis use-case seems to be invalid for Bitmap

[Teodor]

Hi, there,

Long story short... I can't create a Bitmap with the data from the ImageProxy within the analyze method. I get it in format of RGBA_8888. Then I get the buffer, get the byte array and try to decode it into a Bitmap, but unsuccessful.

Is it achievable in this API?

P.S.

Here is a link to me asking in SOF for help.

Stackoverflow question 

Thanks in advance for any ideas!

[Eino-Ville Talvala]

Hi Teodor -

How are you trying to convert the ImageProxy into a Bitmap?  From your wording, I think you might be using BitmapFactory.decodeByteArray or similar.

That method is for decompressing JPEG or PNG files into Bitmap, it's not needed for just converting an RGBA array into a Bitmap.

For that, you probably use createBitmap, though you may need to convert the ImageProxy's ByteArray into an IntArray first, to then get an int[] for that create method.

If you're OK with experimental APIs, you can probably also use Bitmap.wrapHardwareBuffer(ImageProxy.getImage().getHardwareBuffer()).

- Eddy

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[Teodor]

Thanks for the clarification, Eddy,

I wasn't aware of that. It sounds logical, though. I really did end up creating the Bitmap, but it took a while to figure out and set the correct color order (RGBA, ARGB, ABGR...).
I also found out that getting the image in YUV_420 format and converting it instead is actually faster in my case. 😄

Anyways, thanks once again! Got it to work.

[Scott Nien]

> I also found out that getting the image in YUV_420 format and converting it instead is actually faster in my case. 😄

Hi Teodor,  this is amazing.  

Can you share how you convert from YUV_420_888 to the bitmap ?   Maybe we can learn from your discovery. 

Scott

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[Astha Garg]

Hi Scott,

I used the below code link to get Bitmap from ImageProxy (In my case imageProxy.getFormat was giving me 35),

https://stackoverflow.com/a/56812799/8762338

for 256 imageProxy.getFormat value,

https://stackoverflow.com/a/62790338/8762338