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Discussion Groups | TMS320C6x | Sliding window implementation in C6711 IDK

Technical discussions about the TI C6000 DSPs (including the c62x, c64x and c67x DSPs).

  

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Sliding window implementation in C6711 IDK - Vijay Venkatesh Mahalingam - Aug 1 15:13:00 2002

Hi Everybody,

I am working in implementing wavelet transform and
inverse wavelet transform in C6711 IDK. I read thru
the code in TI's manual but could not understand the
implementation of the sliding window and double
buffering schemes that they use to bring in the data
from the External memory to Internal SRAM.
They used DMA streams using dstr_open() and
dstr_init() for initializing , could someone please
explain them conceptually, also i find it difficult to
downsample the input image along the columns.

Specifically in all examples they use the
dstr_get()and dstr_put(). Can i implement my own code
to implement the sliding window and if so how can i
implement it? Thanks in advance,

-Vijay



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Re: Sliding window implementation in C6711 IDK - Andrew Elder - Aug 2 13:00:00 2002


I assume you have looked at SPRA636 ?

Andrew E.

At 04:13 PM 8/1/2002 +0100, Vijay Venkatesh Mahalingam wrote:
>Hi Everybody,
>
> I am working in implementing wavelet transform and
>inverse wavelet transform in C6711 IDK. I read thru
>the code in TI's manual but could not understand the
>implementation of the sliding window and double
>buffering schemes that they use to bring in the data
>from the External memory to Internal SRAM. >
>They used DMA streams using dstr_open() and
>dstr_init() for initializing , could someone please
>explain them conceptually, also i find it difficult to
>downsample the input image along the columns.
>
>Specifically in all examples they use the
>dstr_get()and dstr_put(). Can i implement my own code
>to implement the sliding window and if so how can i
>implement it? >Thanks in advance,
>
>-Vijay >
>_____________________________________






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