How to use the API_DisplayStaticImage on DLP Lightcrafter ?

Hi Haitao,

Thanks for posting. We will research this issue further. Can you provide some more insight into how you are trying to use this function in your current system?

Thanks,

Clinton

Hello Haitao,

I am Clinton's colleague.

How to use API_DisplayStaticImage  function -

typedef ErrorCode_t (API_DataFunc_t)(void *Param, uint8 *Data, uint32 Size);

//You should write a function that will take the

Param - buffer_address

Data - Destination address where the requested number of bytes from buffer_address to be copied

Size - Number of bytes to be copied from Param address into the location given in Data location

For example:

You can write function like the following -

ErrorCode_t RetrieveData(void *Param, uint8* Destination, uint32 Size)

{

     //Copy the contents simple copy

    memcpy(Data,Param,Size);

    return SUCCESS;

}

ErrorCode_t API_DisplayStaticImage(API_DataFunc_t *GetData, void *DataParam);

Now, you can refer to any bmp file and pass the address, like open the BMP file in binary operation, note, if it is a FILE pointer you must pass the pointer to buffer inside the FILE structure NOT the file pointer.

//Lets assume ptrFileBMP - buffer pointer. 

API_DisplayStaticImage(&RetrieveData, (void*) ptrFileBMP);

Let us know if it helps.

Regards,

Sanjeev

 

Hello, Clinton. Thank you very much for your answer. I'd like to use the function to display a static image , e.g. raw format, bmp format, and so forth.

I printed the addresses of all the parameters with a bmp image. There are two "size = 0", could you tell me how to explain it.

Additionally, if I want to display a raw format image,  could you give me some suggestions.

Thank you and good luck!

Haitao Deng

Hello, Sanjeev. Your answers are very helpful ans important and thank you very much for your answer and time.

Hello, Sanjeev. Thank you for your answer again. There are two "size = 0" appeared when I try to display a bmp file. Could you tell me what should to be done when the size equals to "0".

I have not tested the below code, something like below should work for you.

FILE *fp;

ErrorCode_t RetrieveData(void *Param, uint8* Destination, uint32 Size)
{

if((fp == NULL) || foef(fp))
return FAIL;

fread(Destination,1,Size,(FILE*) Param);

return SUCCESS;

}

main()
{
fp = fopen("name_of_bmp_file.bmp", "rb");
if(fp == NULL)
return -1;

API_DisplayStaticImage(&RetrieveData, (void*) fp);

}

Regards,
Sanjeev