After posting the previous thread, I've searched APIs from GNU Radio doxygen.
Several candidates have been found. 1. [`produce()`]( http://gnuradio.org/doc/doxygen/classgr_1_1block.html#aa5581727d057bdd8113f8b2a3fc5bd66 ) 2. [`set_min_noutput_items()`]( http://gnuradio.org/doc/doxygen/classgr_1_1block.html#a65cfc579150dc4d10c6180d3365aa9a8 ) 3. [`set_min_output_buffer()`]( http://gnuradio.org/doc/doxygen/classgr_1_1block.html#a9d10e3f6747f91b215abe81b60a003d5 ) 4. [`expand_minmax_buffer()`]( http://gnuradio.org/doc/doxygen/classgr_1_1block.html#a9bbf96f6a81d5c289934a68ef44dd1b4 ) I think I can combine `produce()` and `set_min_noutput_items()` to **enlarge** the `noutput_items` If I get wrong, please let me know. Regards, Jeon. 2015년 5월 29일 (금) 오후 8:47, Jeon <sjeon87+gnura...@gmail.com>님이 작성: > I am trying to remove `preamble` and `start frame delimiter` from a frame > and only the payload will be passed to the next block. > > While in debugging, `ninput_items` is 7742, and `noutput_items` is 4096, > for instance. An offset where the frame starts is 790. > > Simple calculation gives me that 7742 - 790 = 6952 samples should be > passed to the next block. But output space given is only 4096. Thus, I can > only pass 4096 samples and 6952 - 4096 = 2856 samples will be discarded. > But, I need them to be passed, too. > > Even worse, a stream of samples are coming continuously from a previous > block. > > Will it be helpful if I have some very long buffer in a block? I don't > think it works since `noutput_items` is always smaller than `ninput_items` > every time the block runs `general_work()`. In this case, I think the > buffer will be overflowed. > > The link below is the log that shows > > `i`/`ninput_itmes` and `o`/`noutput_items`, > > where `i` and `o` are input and output indices. When `ninput_itmes` and > `noutput_items` change, it means a new `general_work` is called. > > Log (it's quite long...): https://bitbucket.org/snippets/gsongsong/By8x > > Regards, > Jeon. >
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