AnsweredAssumed Answered

on adv212 file header and tile

Question asked by condone on May 27, 2013
Latest reply on May 29, 2013 by condone



i'm using adv212 to encode still image in mode of HIPI, and have some questions:


1. When adv212 start to transfer first dma burst data(16-word length), the first word is not FFFFFFF0, but the last input pixel packet, or some random data(it seems random), and then comes the FFFFFFF0.


2. I transferred a 800×600 image to adv212, and configured using Reversible 5 × 3 wavelet kernel and it worked well. But i just notice that maximum tile size when 5 × 3 wavelet kernel is used is 262,144 samples, while 800×600=480,000 samples. Does  adv212 divide image into 2 or more tiles automatically?


3. In adv212 header, byte from offset 0x0C to 0x0F is Size of compressed data, I found this included the zeros padded after the end of jp2 or j2c file in dma burst mode. Is it possible to configure it not include these zeros?


Tiandong Wang