• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 98 subscribers
  • Views 221 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

beginner question about the dm6437

Vadim
Prodigy 210 points

hi,

first of all i must say that i complitly new to the DSP subject and my english isn't very good so forgive for the ignorant of mine.

 

i'm student that want to get into the world of the DSP so i'm doing project with the dm6437 development kit.

as a beginer i took that example "dvsdk_1_01_00_15\examples\video_preview\evmDM6437" and now i'm tring to understand how it works.

my project consist in getting video in making some function on him and get it out.

- do you think that the example i took as a base of my priject could help me understand it? or should i use another base?

- as i saw in the that example we use the Ycbcr and i wanted to know how can i change that into a RGB format (again we talk on the video_preview example, if there is another example that  could help me more it will be great)

- as i look into the the pointer that should point into the buffer i can't understand where the image is being stored and where i can see it in the memory, as i found the inage is stored in 0x80000480 but again is it true or not, and if it's true where can i see it in the code the definiion of it.

- on that example i'm trying to put an Picture Filtering Functions and unfortenatly i dont know how to do that, i tried to understant it from the SPRUF30A.pdf but i dont understand how i can feet it in my example.

 

I will be appreciated for any help, 

Thank you,

Vadim

 

  • 0
    TI__Mastermind 41665 points

    Vadim said:
    - do you think that the example i took as a base of my priject could help me understand it? or should i use another base?

    The video preview example project is probably the easiest video project to get started with since it only really passes the frames through. There is actually a modified version of the video preview project posted on the wiki here that does some modification to the frame and is a bit more interesting than the plain pass through version.

    Vadim said:
    - as i saw in the that example we use the Ycbcr and i wanted to know how can i change that into a RGB format (again we talk on the video_preview example, if there is another example that  could help me more it will be great)

    This is something that would have to be done in software, in fact the IMGLIB in SPRUF30a you mention has a function to do such a conversion.

    Vadim said:
    - as i look into the the pointer that should point into the buffer i can't understand where the image is being stored and where i can see it in the memory, as i found the inage is stored in 0x80000480 but again is it true or not, and if it's true where can i see it in the code the definiion of it.

    Where the image is stored changes on a frame by frame basis as the video driver cycles through the video buffers, the wiki article and example mentioned above can help to exaplain how to access the actual frame data.

    Vadim said:
    - on that example i'm trying to put an Picture Filtering Functions and unfortenatly i dont know how to do that, i tried to understant it from the SPRUF30A.pdf but i dont understand how i can feet it in my example.

    You would have to link in the IMGLIB library and than call the functions giving them the pointers to the image data, the wiki article and modified example mentioned above should make the integration of IMGLIB much easier.