Hi Ali,

> I think this should also work, shouldn't it?
no, that's why I explained what you need to do (use makev).

> Does this part need to be changed since I am working with the vectors?
No, not really. The vectors are still only consecutive numbers in memory.

Best regards,

Marcus


On 18.07.2017 07:51, Ali wrote:
> Hi,
>
> 1- Actually I am using the followings
>
> make(8,8,1000*sizeof(float))
> make3(4,4,1000*sizeof(float),1000*sizeof(float),4*sizeof(float))
>
> I think this should also work, shouldn't it?
>
> 2- Under the general work function I am using the followings:
>
> const float *in1 = (const float *) input_items[0]
> ...
> float *out1 = (float *) output_items[0]
>
> Does this part need to be changed since I am working with the vectors?
>
> Thanks,
> Ali
>
>
>
>
> 2017-07-17 16:42 GMT+03:00 Marcus Müller <[email protected]
> <mailto:[email protected]>>:
>
>     Hi Ali,
>
>     So, you want one block with:
>
>       * 8 inputs, itemsize0…7 = 1000*4B = 4000B
>       * 4 outputs, itemsize0=itemsize1=4000B, itemsize2=itemsize3=16B
>
>     Correct?
>
>     You need to generate two std::vector<int> with content
>
>     {4000,4000,4000,4000,4000,4000,4000,4000}
>
>     and
>
>     {4000,4000,16,16}
>
>     respectively, and use gr::io_signature::makev(int min_streams, int
>     max_streams, vector) to generate the io_signatures[1] that you use
>     in your block's constructor. The question whether your block
>     should be a general, or a sync block, is independent from the item
>     sizes of the in and outputs, but depends on whether there's always
>     a fixed ratio of produced output items to consumed input items, as
>     explained in [2].
>
>     Best regards,
>
>     Marcus
>
>     [1]
>     
> https://gnuradio.org/doc/doxygen/classgr_1_1io__signature.html#a99e0f9e8de8e7ce16ed92d9f2655e66c
>     
> <https://gnuradio.org/doc/doxygen/classgr_1_1io__signature.html#a99e0f9e8de8e7ce16ed92d9f2655e66c>
>     [2]
>     
> https://wiki.gnuradio.org/index.php/Guided_Tutorial_GNU_Radio_in_C%2B%2B#4.3.2_Specific_block_categories
>     
> <https://wiki.gnuradio.org/index.php/Guided_Tutorial_GNU_Radio_in_C%2B%2B#4.3.2_Specific_block_categories>
>
>
>     On 07/17/2017 03:31 PM, Ali wrote:
>>     Hi to all,
>>
>>     I want to design my own OOT module with the following I/O:
>>
>>     8 inputs (length of 1000 and each element is type of float)
>>     2 outputs (length of 1000 and each element is type of float)
>>     2 outputs (length of 4 and each element is type of float)
>>
>>     I used general type block but I could not get the desired
>>     outputs. Do you suggest other type of blocks? Is there any
>>     example similar to this work that I can study on? Can you suggest
>>     a module name or a link?
>>
>>     Best,
>>     Ali
>>
>>
>>
>>     _______________________________________________
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>
>
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>
>
>
>
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