question on image resolutions

[Ofer Goren]

Hi.

Using Android NDK, I'm requesting a JPEG image with resolution of 384*256. I'm creating a reader for that request, and wait for the reader to finish processing and trigger the registered callback with the data pointer and the length. In the reader callback, I call 

AImage_getWidth(image, &imgW);

AImage_getHeight(image, &imgH);

And indeed I get 384 and 256 respectivly.

Then for debugging proposes, I dump the buffer into the file system and pull it to my PC as a JPEG file. I then open it using a photo editing SW, and check the resolution. The reported resolution is 352*288. There are 32 less pixels on the H dimension, and 32 more on the W dimension.

My questions:

1. Why is that?

2. Where can I find what are the supported resolutions that android provides?

Thanks!

Ofer