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Old 06-13-2018, 10:56 AM   #1
Meo-Ada Mespotine
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Default Markers: A unique identifier/guid for markers/regions/time-signature-markers (DONE)

I would love to have unique-identifiers/guids for markers/regions and time-sig-markers.

I'm currently working on a set of functions for ReaScript-Lua-Coders, that helps storing additional metadata for objects with guids, like tracks, items, etc to have something more flexible than ProjectNotes/ItemNotes, etc.
I'm doing it using ProjectExtStates, where extname is the guid of the object, the key the additional "metadata"-tag and the value it's value.
That way, an object can have one or more additional "tags" stored that way.


Now here is my problem: I can't do that for markers/regions/time-sig-markers, as there is no unique identifier for markers/regions/timesig-markers.
When I use the idx of the first marker(of three in my project), it will become obsolete as unique identifier, when I move the first marker past the last one.
When I use the shown number, it will become obsolete, as soon as the user changes the number.
Using the text is impossible, as this text could change every minute.
And checking the markers for changes using a defer-script is also only helpful, when only one marker is changed; as soon as several markers are changed at the same time(using some script or so), it would be a mess to code a defer-checker-script, if possible at all.

So when I want to associate to a marker/region/timesig-marker a ProjExtState, I have no identifier to use as extname, that will stay the same no matter what the user inputs or does to markers.

That's why I would love to have a guid to use for the marker, that can be used in the background by scripts, without having to force the user to not do certain things(like changing several markers at a time).



One usecase for my set of functions would be storing additional metadata-tags to be used as ID3-tags to regions/markers themselves, not inside the marker-text, but rather in the ProjExtStates associated with the region/marker using the guid as extname.
After rendering, I could read out this additional tag-information from a specific region and add them to the rendered file using the SWS-function SNM_TagMediaFile().


PS: the following functions would probably be useful to add to the api,
Code:
GetGuidFromMarker(integer idx)
GetGuidFromRegion(integer idx)
GetGuidFromTimeSigMarker(integer idx)
When storing it into RPP-files without loosing backwards-compatibility, I would suggest something like adding additional entries after the MARKER-entries
Code:
MARKER_GUID idx guid
where idx is the position of the marker in the MARKER-list and guid the guid itself.


PPS: Hope, I didn't write this overspecific

Last edited by Meo-Ada Mespotine; 08-24-2018 at 05:21 AM.
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Old 08-24-2018, 05:20 AM   #2
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Bump.
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Old 08-24-2018, 07:19 AM   #3
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Not sure if it helps but SWS does something similar ('attaching permanent things to markers / regions') with SWS notes, marker / regions subtitles (SWS/S&M: Open/close Notes window (marker/region subtitles). The notes / subtitles 'stick' to the markers / regions also when rearranged and are saved with the project.

Seems to be done by creating and storing own unique ID's.
https://github.com/reaper-oss/sws/bl...arker.cpp#L136

Surely not as convenient as having API functions for it, but maybe a workaround in the meantime ?
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Old 08-29-2018, 07:29 AM   #4
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Is that programmable from within ReaScript? If yes, this could be a real good help...
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Old 11-23-2019, 09:55 AM   #5
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Bumpy bumpy.

With the recent additions for additional metadata for tracks, items and envelopes, markers/regions would be a great next goal for additional metadata, either using an identifier as mentioned in the OP or the way, as track, item and envelopes do it.
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Old 11-23-2019, 01:07 PM   #6
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+ 1
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Old 09-06-2020, 01:02 PM   #7
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Did anything happen with this?

I see we can get GUIDs for the markers/regions:
Code:
retval, GUID = reaper.GetSetProjectInfo_String(CURR_PROJ, "MARKER_GUID:"..idx, "", GET_IT)
but is there any way to actually use those GUIDs?
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Old 09-06-2020, 02:12 PM   #8
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Yes. You can look through markers by guid. And you can use the guid for project extension states, so you can store additional metadata associated with markers/regions.

My Ultraschall-Api has functions for marketextstates because of that.
Quite handy...

https://mespotin.uber.space/Ultrasch...arkerExtStates
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Old 09-06-2020, 03:19 PM   #9
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why not use item-markers, ala heda's script? you could then use the guids of the items being used to generate markers...kind of smuggling in the guids in that way.

a modified, headless version of this script is how i manage all of my markers and regions. i toggle the script off when i need to drag regions around.

https://forum.cockos.com/showthread.php?t=155582
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Old 09-06-2020, 06:07 PM   #10
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Quote:
Originally Posted by mccrabney View Post
why not use item-markers, ala heda's script? you could then use the guids of the items being used to generate markers...kind of smuggling in the guids in that way.

a modified, headless version of this script is how i manage all of my markers and regions. i toggle the script off when i need to drag regions around.

https://forum.cockos.com/showthread.php?t=155582
Item markers are not convenient for the stuff I need them. I want markers being independent of any messaround I make with items so having them connected shuffles them around in a way I don't want.

And as Fabian pointed out: markers and regions have guids now too, so item's guids are not needed for that anymore.
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