There will be dependencies between MCUs, unless theres a restart marker
appearing after each MCU.
But your method will still work, as long as you store the context of the jpeg
decoder(DC predictors, bitstream position etc) in between the MCU decodes.
Decode one MCU .. Transfer decompressed MCU to some other larger memory like
SDRAM (using DMA perhaps). Decode next MCU..
Regards
Ranjith
----- Original Message ----
From: rosarium.pila
To: i...
Sent: Friday, 7 December, 2007 5:05:01 PM
Subject: [imagedsp] Jpg decompression with inadequate RAM
Hello Friends,
I am developing an application where I have to do Jpeg
decompression. But I don't have enough RAM in my micro controller to
store the jpg image. Neither the controller has EMI to interface
SRAM.
Can I decompress the jpg step wise. I meant MCU (Minimum Coded Unit)
wise.
For example I will not store the full image and then decompress
rather I will store one MCU then decode it; then free the RAM and
will repeat the process. Will it work properly.
Are there any dependencies between MCUs?
Please respond.
Thanks & regards,
Rosarium