Looking for help deciding the least amount of hardware (cost) to be able to decode JPG's and dsiplay to a color TFT?
Lots of info out there in this but not too much help doing it cheap!
Any help is appreciated!
Thanks.
Anything that can address enough memory to buffer the images will decode JPG's. The real question is how fast and whether you want to and can use preexisting C libraries.
Jim Stewart wrote: : The Mind Factory INC wrote: :> Looking for help deciding the least amount of hardware (cost) to be able to :> decode JPG's and dsiplay to a color TFT? :> :> Lots of info out there in this but not too much help doing it cheap! : : Anything that can address enough memory to buffer the : images will decode JPG's. The real question is how : fast and whether you want to and can use preexisting : C libraries. :
Jim is correct. If you're looking to do it in software, i recommend you look at the "Independent JPEG group"'s libjpeg. It's C and compiles cleanly on many platforms.
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Bitter experience tells me that the closest one can get to "cheap" is "under $400, retail" (and even that is a pretty aggressive target).
If this is for a one-off, which it doesn't seem to be from the tenor of your message, then repurpose a PDA. If this is for production, then consider an ARM7 SoC with on-chip LCD controller, such as Sharp LH79520.
The AT76C113 may be a good chip JPEG compression/decompression LCD controller ARM7 core... Not so expensive in volume but also not for homebrew. Send me a mail off-line If you want to know more. (discard the '-'s)
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