[vdr] implementing channel plug-in

Theunis Potgieter theunis.potgieter at gmail.com
Wed Jan 6 13:05:11 CET 2010


2010/1/6 Klaus Schmidinger <Klaus.Schmidinger at tvdr.de>:
> On 05.01.2010 09:40, Theunis Potgieter wrote:
>> 2010/1/4 Klaus Schmidinger <Klaus.Schmidinger at tvdr.de>:
>>> On 04.01.2010 16:09, Theunis Potgieter wrote:
>>>> 2010/1/4 Klaus Schmidinger <Klaus.Schmidinger at tvdr.de>:
>>>>> On 04.01.2010 14:37, Theunis Potgieter wrote:
>>>>>> I was in search for a plug-in that could map alternative long names to
>>>>>> the supposedly current long name of a channel. I guess I didn't search
>>>>>> hard and long enough, but could not find one that would implement this
>>>>>> behaviour. The idea is, that when ever a channel list is called, it
>>>>>> will provide the alternative long name, but saves the original long
>>>>>> name in channels.conf.
>>>>>>
>>>>>> So I thought of implementing one my self. After reading the
>>>>>> PLUGINS.html from VDR-1.7.10, I thought it would be possible. I didn't
>>>>>> see any spoon feeding when it came to channels in the documentation,
>>>>>> so I thought I will have a look at channels.h and there seems to be a
>>>>>> member function called Name() in the tChannelID class. Would it be
>>>>>> wise then to copy the tChannelID class and replace the member function
>>>>>> Name()?
>>>>> tChannelID has no member function named Name().
>>>>> Maybe you mean the cChannel class?
>>>>> I guess if you change the implementation of cChannel::Name(), then you
>>>>> could do what you want.
>>>> Thanks for that. I must have scrolled back up and saw the wrong class,
>>>> I meant cChannel:Name().
>>>>
>>>>>> Which global pointer will I have to deleted and assign to the new object?
>>>>> I don't understand this question.
>>>>> There is no "new object".
>>>>> You will have to patch the VDR source to implement this.
>>>> The idea is that the plug-in would delete the current instance of
>>>> cChannel and instantiate a new cChannel instance in the place there
>>>> of. This without having to patch vdr to implement this feature. There
>>>> for the question about the (e.g. global) pointer that is pointing to
>>>> the original instance of cChannel. Is there a member function in the
>>>> plug-in class that can be called from VDR's main and hand over such a
>>>> pointer?
>>> There is an object of cChannel for each channel, and they are stored in
>>> a list. You can either patch VDR to modify cChannel::Name() so that it
>>> takes the original name as an index into some database of yours, or
>>> modify the names in your channels.conf and set "Setup/DVB/Update channels"
>>> to "PIDs only".
>>>
>>> Just curious: what's wrong with the original names?
>>
>> The long names and the short names are the same.
>
> And what's wrong with that?

If you have a lot of channels, where the Long names are reduced to
short (acronym) names. Then you might run into the problem where you
see a few channels with the same short name but with different IDs. I
can't always remember what the short name used to stand for after I
visit the channel in 6 months. The STB will show the correct long
name.

>
> Klaus
>
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