A little help with this please......urgent

Hi,
I am mailing this question again because, I didn’t get enough help last
time. :slight_smile:

My intention here is very different from what gr.file_source() does, so
please take a look at my explanation.
I want to read a byte from a file and then put it on an input stream to
a
block. If you look at the following code below you will know that I do
not
want to open a stream from the file to the input of another block. I
just
want to read a byte of data and then put it on an input stream.

tb.start()
fil=open("/home/murtuza/t",‘r’) # I first open a file to read
n=0
while n<1:
data = fil.read(gr.sizeof_char) # then read one byte only
n=n+1
send_pkt(data) # then send it over the stream to a block that
processes that byte.
# after this we read the next byte and then send the data to the
input stream.

tb.wait()

If you look at benchmark_tx.py program data is read from a file and then
send_pkt() is called. send_pkt() module in transmit_path.py calls
“self.packet_transmitter.send_pkt(payload, eof)” which then calls
send_pkt()
in mod_pkts. Here, the payload is inserted into the message queue by the
statement self._pkt_input.msgq().insert_tail(msg). I want to do
something
similar except for the fact that I want to put the unmodified byte in
the
queue unlike mod_pkts which first uses message_from_string and then
inserts
the msg on to the queue.

If this can be done using file_source then can u tell how?

I am working on something that requires me to do this. May be this is
not an
ideal way of doing it but still I want to know if it is possible.

Thanks,
Ali

On Fri, Jan 02, 2009 at 03:56:43PM -0600, Mir A. wrote:

Hi,
I am mailing this question again because, I didn’t get enough help last
time. :slight_smile:

Ali,

The easiest path is probably just to make a local copy of mod_pkts and
hack away. Once you have it working, you can clean it up and figure
out where it really ought to live.

Eric

This forum is not affiliated to the Ruby language, Ruby on Rails framework, nor any Ruby applications discussed here.

| Privacy Policy | Terms of Service | Remote Ruby Jobs