Is a bug about stream_mux block?

GNU Radio
1

Hi Experts,
As follow is my program to test stream_mux block. I found when
dat1_num+dat2_num > 8192, the result was wrong.
Is there something I have made a mistake?
My gnuradio version is v3.7.4git-35-g1092e685

#!/usr/bin/env python
from gnuradio import gr
from gnuradio import blocks
if name == ‘main’:
tb = gr.top_block ()
dat1_num = 3
dat2_num = 8191

    dat1 = [1] * dat1_num
    dat1_src = blocks.vector_source_f(dat1)

    dat2 = [2] * dat2_num
    dat2_src = blocks.vector_source_f(dat2)

    tmp_dat = dat1 + dat2
    tmp_dst = blocks.vector_sink_f()

    mux = blocks.stream_mux(gr.sizeof_float, (dat1_num, dat2_num))

    tb.connect((dat1_src, 0), (mux, 0))
    tb.connect((dat2_src, 0), (mux, 1))
    tb.connect(mux, tmp_dst)
    tb.run ()
    if (tuple(tmp_dat) == tmp_dst.data()):
        print "fine"
    else:
        print len(tmp_dst.data())
2

On 03/25/2014 03:59 PM, Tiankun Hu wrote:

Hi Experts,
As follow is my program to test stream_mux block. I found when
dat1_num+dat2_num > 8192, the result was wrong.
Is there something I have made a mistake?

There might be a bug in that block, although when you’re streaming, it
should work (i.e. not when you have a static case).

M

3

On 03/25/2014 06:15 PM, Martin B. wrote:

On 03/25/2014 03:59 PM, Tiankun Hu wrote:

Hi Experts,
As follow is my program to test stream_mux block. I found when
dat1_num+dat2_num > 8192, the result was wrong.
Is there something I have made a mistake?

There might be a bug in that block, although when you’re streaming, it
should work (i.e. not when you have a static case).

I checked the code, there was indeed a bit of a bug with finite stream
lengths. Commited a fix.

Cheers,
M

4

Hi Martin,
I haven’t found your committed in master branch yet, could you share
your diff?

于 2014年03月26日 04:37, Martin B. 写道:

I checked the code, there was indeed a bit of a bug with finite stream
lengths. Commited a fix.

Cheers,
M

–
Thanks
Tiankun

5

On 03/26/2014 02:13 PM, Tiankun Hu wrote:

Hi Martin,
I haven’t found your committed in master branch yet, could you share
your diff?

https://github.com/mbr0wn/gnuradio/tree/blocks/stream_mux

M

6

Thanks your help, it works fine now.

于 2014年03月27日 16:54, Martin B. 写道:

于 2014年03月26日 04:37, Martin B. 写道:

I checked the code, there was indeed a bit of a bug with finite stream
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–
Thanks
Tiankun