Tvheadend

Is the channel name column empty or the service name column?

if it is the channel name column then you can do the following:
After the initial tuning is finished (even with manually added muxes) you can press the "Map DVB services to channels" in order to create the channels.

The Service name is empty, while Channel name is Unmapped.
The same configuration in a Debian VM (with the same tuner of course) automatically retrieve the Service Name and the Channel name, while on the QNAP it doesn't. I've perl v5.10.0 installed on the QNAP (which seems to be linked to Tvheadend, at least on the Debian apt-get dependencies).

Additionally, both on the Debian VM and the QNAP, I've noticed that if I manually add a mux the Muxes awaiting initial scan counter always remains at "1" and the Map DVB services to channels button is disabled. But there is a workaround: simply click the Add DVB network by location button, select a random city and then on the Multiplexes tab delete all the added muxes. Tvheadend refreshes and updates the muxes and the counter go to 0, allowing to map the channels.

But on the QNAP even if I click the Map DVB services to channels button they're not added because of the blank Service name.
Here there are some screenshots.

http://imageshack.us/photo/my-images/69/tvh1.jpg/
http://imageshack.us/photo/my-images/718/tvh2.jpg/
http://imageshack.us/photo/my-images/94/tvh3.jpg/

Oke,

The service name is taken from the DVB information it self.
If you create a channels.conf file using the dvb-apps tools (see http://www.linuxtv.org/wiki/index.php/Testing_your_DVB_device) are the service names populated in the channels.conf file?

If so, then the information is there, but tvheadend can not pick it up some how.

Hein.

I've tried another time (previously a used a debian-created channels.conf) by compiling dvb-apps tools directly on the QNAP.
I then exported the LD_LIBARY_PATH to usr/lib subfolder of the dvb-apps tools.

Running dvbscan results in an error: "Unable to query frontend status".
However, scan works (on the wiki it is written to try scan if dvbscan doesn't work); this is the output:

[/share/Public/usr/bin] # ./scan ../share/dvb/dvb-t/it-Test > ~/channels.conf
scanning ../share/dvb/dvb-t/it-Test
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
initial transponder 514000000 0 9 9 6 2 4 4
>>>tune to: 514000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_AUTO:FEC_AUTO:QAM_AUTO:TRANSMISSION_MODE_AUTO:GUARD_INTERVAL_AUTO:HIERARCHY_AUTO
0x0000 0x2185: pmt_pid 0x01a5 RAI -- Rai Premium (running)
0x0000 0x2186: pmt_pid 0x01a6 RAI -- Rai yoyo (running)
0x0000 0x2187: pmt_pid 0x01a7 RAI -- Rai 4 (running)
0x0000 0x2188: pmt_pid 0x01a8 RAI -- Rai Gulp (running)
0x0000 0x2189: pmt_pid 0x01a9 RAI -- Rai Movie (running)
Network Name 'RAI'
dumping lists (5 services)
Done.

[/share/Public/usr/bin] # cat ~/channels.conf
Rai Premium:514000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_AUTO:FEC_AUTO:QAM_AUTO:TRANSMISSION_MODE_AUTO:GUARD_INTERVAL_AUTO:HIERARCHY_AUTO:431:441:8581
Rai yoyo:514000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_AUTO:FEC_AUTO:QAM_AUTO:TRANSMISSION_MODE_AUTO:GUARD_INTERVAL_AUTO:HIERARCHY_AUTO:432:442:8582
Rai 4:514000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_AUTO:FEC_AUTO:QAM_AUTO:TRANSMISSION_MODE_AUTO:GUARD_INTERVAL_AUTO:HIERARCHY_AUTO:433:443:8583
Rai Gulp:514000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_AUTO:FEC_AUTO:QAM_AUTO:TRANSMISSION_MODE_AUTO:GUARD_INTERVAL_AUTO:HIERARCHY_AUTO:434:445:8584
Rai Movie:514000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_AUTO:FEC_AUTO:QAM_AUTO:TRANSMISSION_MODE_AUTO:GUARD_INTERVAL_AUTO:HIERARCHY_AUTO:435:446:8585

If anyone has an idea on how I can debug Tvheadend to solve my problem, please let me know.
If the tuner works, and the channel scan works, that has to be something wrong with Tvheadend. But I don't know where to look, as there is not so much debug info...

Please help!
Regards.

how long did you wait after the initial scan was completed? Sometimes it takes some time before the service name is populated.

Did you manually add the required mux into tvheadend? (so not using the " Add DVB network by location " button.)

From what you have posted it looks correct, and also tvheadend finds the correct services.

how long did you wait after the initial scan was completed?

About ten minutes, it should be enough...

Did you manually add the required mux into tvheadend? (so not using the " Add DVB network by location " button.)

As I've written before, if I add a mux manually, it is added but the Muxes awaiting initial scan counter always remains at 1 so I cannot add the channels anyway.
On the contrary, if I add the mux manually and then Add DVB network by location the muxes (both the manually and the automatically added) are scanned and the Muxes awaiting initial scan counter goes to 0. But unfortunately the services, although detected (see on the third screenshot, they are there), cannot be converter to channels because they lack the name. And that's the problem!

From what you have posted it looks correct, and also tvheadend finds the correct services.

Yes, I know, and that's the reason I'm asking how I can debug Tvheadend to see why it doesn't retrieve the channels name.
Thank you.

Okee, from your posts I can see that you use the default 2.12 release. Could you compile the latest version from GIT?
Just to make sure that some of the bugs that were solved in the latest version is not getting into your way.

Hein

I would like to try to compile tvheadend from GIT, but wasn't able to.
I can't make the sources because of an error. I'm not so skilled on GIT, can you help me?

These are the commands and their output:

[~] # mkdir tvh
[~] # cd tvh

[~/tvh] # git clone git://github.com/andoma/tvheadend.git
Initialized empty Git repository in /root/tvh/tvheadend/.git/
remote: Counting objects: 10599, done.
remote: Compressing objects: 100% (2756/2756), done.
Receiving objects: 100% (10599/10599), 4.30 MiB | 268 KiB/s, done.
Resolving deltas: 100% (8051/8051), done.

[~/tvh] # cd tvheadend/
[~/tvh/tvheadend] # ./configure --disable-avahi --release
Using C compiler:      cc
Using libssl:          0.9.8g
Release build: 2.12.99
Final binary is: build.Linux/tvheadend

[~/tvh/tvheadend] # make
at: build.Linux/ver: No such file or directory
Version changed
CC      build.Linux/src/main.o
CC      build.Linux/src/utils.o
CC      build.Linux/src/wrappers.o
CC      build.Linux/src/version.o
CC      build.Linux/src/access.o
CC      build.Linux/src/dtable.o
CC      build.Linux/src/tcp.o
CC      build.Linux/src/http.o
CC      build.Linux/src/notify.o
CC      build.Linux/src/epg.o
CC      build.Linux/src/xmltv.o
CC      build.Linux/src/spawn.o
CC      build.Linux/src/packet.o
CC      build.Linux/src/streaming.o
CC      build.Linux/src/teletext.o
CC      build.Linux/src/channels.o
... removed ...
CC      build.Linux/src/dvb/diseqc.o
CC      build.Linux/src/dvb/dvb_adapter.o
CC      build.Linux/src/dvb/dvb_multiplex.o
CC      build.Linux/src/dvb/dvb_transport.o
CC      build.Linux/src/dvb/dvb_preconf.o
/root/tvh/tvheadend/src/dvb/dvb_preconf.c: In function ‘dvb_mux_preconf_add’:
/root/tvh/tvheadend/src/dvb/dvb_preconf.c:67: error: ‘struct dvb_mux_conf’ has no member named ‘dmc_fe_delsys’
/root/tvh/tvheadend/src/dvb/dvb_preconf.c:67: error: ‘SYS_DVBS’ undeclared (first use in this function)
/root/tvh/tvheadend/src/dvb/dvb_preconf.c:67: error: (Each undeclared identifier is reported only once
/root/tvh/tvheadend/src/dvb/dvb_preconf.c:67: error: for each function it appears in.)
make: *** [build.Linux/src/dvb/dvb_preconf.o] Error 1

How can I fix the error and compile it?

A change was made to the dvb_preconf.c code with the following diff:

https://www.lonelycoder.com/redmine/projects/tvheadend/repository/diff/src/dvb/dvb_preconf.c?rev=45281ce0c3b684a7ecbf6a11a026707958cb86d6&rev_to=42adea653d7e08162e614958ab9827d10f86677b

If you reverse that .. and then try again ...

Hein

I don't know how to apply a diff with git, however I had a look to the link you provided and I manually removed the line:

dmc.dmc_fe_delsys = SYS_DVBS;

However, the issue is still not resolved.
Now I'm running the git-d4562ec version and on the Services tab there is a new column (DVB default charset) that there wasn't before.
But the channel names still are not retrieved. Look at the screenshot here:

http://imageshack.us/photo/my-images/94/tvheadendgit.jpg/

You can see that all the PIDs are correctly identified, but no channel names.
I've made another test: if I input the channels names manually by double clicking the listview cell, then I'm able to add and map the channels.
Obviously this is not so easy to do with more then 30 channels, which have to be identified by PID (using a pen & paper)... :-(

OKee, so somehow the code that retrieves the service names from the DVB tables is not working on your QNAP. But using the dvb-apps utils you can see the service names so they are present in the data.

If I look at older screenshots that also the network name and provider name are not retreived. So somehow that part of the code is not working correctly.

So I can identify where things go wrong, but I can not fix it for you.

Hein

Yeah, can you point me how can I help you to get more debug data to fix the problem?
Something has to be missing if that "name discovery" doesn't work... but what?

Hi, I would just update about this problem.
Thanks to the user cival on QNAP forums, we now know that the issue was related on the gconv utility, that is somewhat "a lite version" on the QNAP.

The missing channels name can be solved by installing the full gconv and adding the required environment variable:

ipkg install gconv-modules
export GCONV_PATH=/opt/lib/gconv

virtualdj,

I've you're still monitoring this thread, could you mail me I need a quick chat about your QNAP package.

Regards
Adam