[vdr] implementing channel plug-in

Klaus Schmidinger Klaus.Schmidinger at tvdr.de
Wed Jan 6 13:07:45 CET 2010


On 06.01.2010 13:05, Theunis Potgieter wrote:
> 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.

Where does the STB get that long name from?

Klaus



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