There is a valve block that works like a switch. There is also a stream
selector block that can switch one or more inputs to one or more outputs.
You can find the stream selector block here
https://github.com/guruofquality/grextras/wiki#wiki-list-of-blocks-in-this-project
On 7/31/2012 3:09 AM, Dmitry Medvedev wrote:
>
>
> I'm writing multichannel p25 recorder. It mostly works (thanks to op25
> team and other contributors). Is there any open documentation on control
> channel messages, especially TSBK frames? I did trellis decoding and CRC
> algorithm (reverse engineered the later, as I couldn't find parameters).
> I understand structure of some messages, for example "Group Voice
> Channel Grant Update" (opcode 02, manufacturer id 00), but many opcodes
> remain unknown. Do you have any leads on this?
> Also, I'm not very familiar with gnuradio, is there way to place some
> kind of "gate" in flowgraph so some parts of it can be switched on/off
> by external event? I want to use such feature to gate voice channels
> on/off and do not waste processor cycles on filtering channels that do
> not carry traffic at the moment.
>
> Best regards,
> Dmitry
>
