How To Fill Bitmap Data in ARGB Format in Android LabelView

I'm working with Android and I really need a fast way to get a 开发者_开发知识库bitmap of format BGRA to be filled in ARGB.

One thing I aslo want to let u know that The Data comes in byte[] format and I have to convert in int[] format also.

Can AnyOne Tell me How to do this ... Thanks in Advance

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If you want to load a Bitmap by bytestream, you can use Bitmap.decodeStream. You could then use getPixel(s?) to get the int array. This is one way I know how to do this, probably not the fastest though. A faster way would be to convert bytes to int, if your byte array is nothing but pixeldata this won't be too hard.

BGRA to ARGB can be done with bitshifting quite fast.

A nice source you would probably like: https://web.archive.org/web/20141229164101/http://bobpowell.net/lockingbits.aspx

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The fastest way I think would be to do it in native code using the NDK. I've been considering to use it for image processing for some time but didn't get the chance yet. So I don't know much about it (i.e. how you would access your byte buffer) but you could start from the Plasma sample for bitmap processing in JNI.