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May 13, 2012, 9:40 AM
Post #4 of 13
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Re: Ticket #10712: HD Homerun Prime in Digital Cable mode fails Live TV and recording
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#10712: HD Homerun Prime in Digital Cable mode fails Live TV and recording
--------------------------------------+----------------------------
Reporter: Gern Blanston <mythtv@…> | Owner: danielk
Type: Bug Report - General | Status: new
Priority: minor | Milestone: unknown
Component: MythTV - Recording | Version: 0.25-fixes
Severity: medium | Resolution:
Keywords: hdhomerun tuning | Ticket locked: 0
--------------------------------------+----------------------------
Comment (by captainbaldric@…):
I ran into the same issue. In my backend log, I found ...
mythbackend.20120413210155.15620.log:2012-04-13 21:05:55.865706 E
[15620/15630] TVRecEventdtvmultiplex.cpp:323 (ParseTuningParams) - DTVMux:
ParseTuningParams -- Unknown tuner type
which I found disappointly vague, so I made the following change.
{{{
mythtv-0.25/libs/libmythtv/dtvmultiplex.cpp
323c323
< LOG(VB_GENERAL, LOG_ERR, LOC + "ParseTuningParams -- Unknown tuner
type");
---
> LOG(VB_GENERAL, LOG_ERR, LOC + QString("ParseTuningParams -- Unknown
tuner type = 0x%1").arg(type, 8, 16, QChar('0')));
}}}
After rebuilding and restarting the backend, the updated log file showed
...
mythbackend.20120413212337.15926.log:2012-04-13 21:23:38.034919 E
[15926/15926] CoreContext dtvmultiplex.cpp:324 (ParseTuningParams) -
DTVMux: ParseTuningParams -- Unknown tuner type = 0x00002000
I tracked down this tuner type value to be kTunerTypeOCUR.
When running the HDHomerun Prime with a CableCard, the OCUR tuner type
would be appropriate, but when running without a CableCard, it operates as
an ATSC tuner (and supports multiplexing).
To fix the problem, I made the following change ...
{{{
diff mythtv-0.25.orig/libs/libmythtv/hdhrstreamhandler.cpp
mythtv-0.25/libs/libmythtv/hdhrstreamhandler.cpp.new
274c274,287
< _tuner_types.push_back(DTVTunerType::kTunerTypeOCUR);
---
> hdhomerun_tuner_status_t t_status;
>
> hdhomerun_device_get_oob_status(_hdhomerun_device, NULL,
&t_status);
> LOG(VB_GENERAL, LOG_ERR, LOC + QString("Cable card OOB
channel is '%1'").arg(t_status.channel));
> if (strcmp(t_status.channel, "none") == 0)
> {
> _tuner_types.push_back(DTVTunerType::kTunerTypeATSC);
> LOG(VB_GENERAL, LOG_ERR, LOC + "Cable card is not
present");
> }
> else
> {
> _tuner_types.push_back(DTVTunerType::kTunerTypeOCUR);
> LOG(VB_GENERAL, LOG_ERR, LOC + "Cable card is present");
> }
}}}
Note: I added several log messages to help debug my change. LOG_ERR may
not be the right logging level, since these are not really errors. It's
perfectly valid to run the HDHomerun Prime with or without a CableCard.
I briefly had access to a CableCard, and verified that the tuner type
would be set to OCUR by the above code, but I never got the CableCard to
work (due to incompentence at Comcast customer service). The HDHomerun
Prime is working very well as an ATSC tuner.
--
Ticket URL: <http://code.mythtv.org/trac/ticket/10712#comment:3>
MythTV <http://code.mythtv.org/trac>
MythTV Media Center
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