[mythtv-users] Need assistance making a MythTV internals diagram

[Thomas Mashos]

On Fri, Apr 19, 2013 at 3:35 PM, Larry K <lunchtimelarry at gmail.com> wrote:

> One would think the devs might have modeled the system already.  And then
> develop the software accordingly.
>
>
> On Fri, Apr 19, 2013 at 12:02 AM, Nigel Pearson <nigel at ind.tansu.com.au>wrote:
>
>>
>> On Thu, 18 Apr 2013 14:09:19, Thomas Mashos asked:
>>
>> > 1) What is mythtranscode, mythjobqueue, mythmediaserver, and
>> mythpreviewgen
>> > writing to the database
>>
>>
>> MythTranscode: Mostly position-map data for the new file.
>>
>> MythJobQueue: A little status info, showing progress of the current &
>> pending jobs.
>>
>> MythMediaServer: Nothing - read-only?
>>
>> MythPreviewGen: Nothing. It creates a preview file in the directory
>> (storage group) containing the recording, based on looking up the recording
>> (channel, stattime, the bookmark or default preview start time).
>>
>>
>>
>> > 2) What is mythfrontend doing with the database
>>
>> Reading:
>> * theme and language data,
>> * recording or video or music info to display to the user,
>> * location of a selected file to playback,
>> * audio and video output settings to setup the playback window, decoder
>> and deinterlacing filter,
>> * position-map data to allow fast navigation in the playback.
>>
>> Writing a new bookmark location to trigger a mythpreviewgen execution.
>>
>> Reading/writing editing cutpoints (possibly from reading commercial-skip
>> position maps).
>>
>>
>>
>> > 3) what is the master backend doing with the secondary backend (and vice
>> > versa)
>>
>> Not an expert, but I think;
>>
>> Master can ask slave to:
>> * shutdown or sleep,
>> * delete current or expired recordings,
>> * start/stop a recording (or Live TV chain),
>> * get status info, like how full slave's storage
>> group dirs are, what recordings are occurring, et c.
>>
>>
>> Generally, there isn't much the other way.
>> When a slave starts up, it simply informs the
>> master it is there and available to record?
>>
>>
>> > 4) what is mythweb doing with the database and backends
>>
>> Basically, exactly the same as MythFrontend.
>>
>>
>>
>> --
>> Nigel Pearson, nigel at ind.tansu.com.au| I've been talking to |
>> Telstra Net. Eng., Sydney, Australia | the ship's computer. |
>> Office: 8576 5449    Fax:  9298 9033 | ...  It hates me!    |
>> Mobile: 0408 664435  Home: 9792 6998 |   Marvin             |
>>
>>
>>
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>>
>
>
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>
Larry,

I'm making this in conjunction with the developers. There isn't anything
like this.

Thanks,

Thomas Mashos
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