CODEWITHSUNDEEP
javaandroidimagejpeg
AjayR
AjayR

Reputation: 4179

Any APIs or code to Convert Raw Image (like DNG) to JPG format in Java/Android

I was looking to convert the Raw Image data (like .DNG extension) to JPG format using Android. There is a similar app in Playstore

Raw Decoder Free

Can anyone provide me some clue or any open source code to do same.

[EDIT] I have already tried THIS using Visual C++ and able to develop the Application for Windows OS.

The stuff I am looking for Android.

Upvotes: 2

Views: 4492

Answers (1)

Rohit
Rohit

Reputation: 2681

You can use bitmap from raw image.

And for that you can extend every byte to 32-bit ARGB int. A is alpha 0xff and R G B are pixel values. Try following code. Source is byte array of Raw image.

byte [] Source; //Comes from somewhere...
byte [] Bits = new byte[Source.length*4]; //That's where the ARGB array goes.
int i;
for(i=0;i<Source.length;i++)
{
    Bits[i*4] =
        Bits[i*4+1] =
        Bits[i*4+2] = ~Source[i]; //Invert the source bits
    Bits[i*4+3] = -1;//0xff, that's the alpha.
}

//Now put these nice ARGB pixels into a Bitmap object

Bitmap bm = Bitmap.createBitmap(Width, Height, Bitmap.Config.ARGB_8888);
bm.copyPixelsFromBuffer(ByteBuffer.wrap(Bits));

Or library is available here. But you need to use ndk for same.

Upvotes: 2

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