On Wed, Oct 23, 2013 at 1:33 PM, Bharat Mukkala <bharatmukk...@yahoo.co.in> wrote: > its true that setting the history to length of coefficients work, but when we > go for more than 1 level of decomposition, the output from previous level > will be used , so how can is use the output again ?
Seems to me like you'll need to keep that state inside the object. > i have another doubt , if we set the size of each element in the input > signature to be 4*sizeof(float) and size of each output element to be > 4*sizeof(float) in a gr::sync_block, then in the work function , how each > element will be handled, (is it like 4 input items of size float), also > please tell me how to use them. > thank you Look at some of the other blocks where a vector length is specified. gr-blocks/lib/float_to_short_impl.cc might be a good one to look at. The vlen used here means that each item is of size vlen times the size of a float (on the input stream). If vlen=4, each item is composed of 4 floats. So if 'float *in = (float*)input_items[0]', then it has a length of ninput_items[0]*4. You can index the array from 0 to (ninput_items[0]*4 - 1). Tom _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
