Accessing array data in TrackEnvelope pointer?

[cturner]

OK, I'm sure this is some simple Python thing. I've looked around the forum, but can't find anything about this. I know about pointers passed as parameters, but this isn't a case, correct?

track = RPR_GetSelectedTrack( 0, 0 )
envelope = RPR_GetTrackEnvelopeByName( track, 'Volume' )
valid = RPR_ValidatePtr( envelope, 'TrackEnvelope*')
msg( str(valid) )

AFAIK, I've got a valid Track Envelope pointer here, but I can't for the life of me access the data. I get the string "(TrackEnvelope*)0x13F229AC" and envelope[0] is equal to '('



Any help appreciated!

Charles

Latest Reaper OSX

[Xenakios]

Originally Posted by cturner

OK, I'm sure this is some simple Python thing. I've looked around the forum, but can't find anything about this. I know about pointers passed as parameters, but this isn't a case, correct?

track = RPR_GetSelectedTrack( 0, 0 )
envelope = RPR_GetTrackEnvelopeByName( track, 'Volume' )
valid = RPR_ValidatePtr( envelope, 'TrackEnvelope*')
msg( str(valid) )

AFAIK, I've got a valid Track Envelope pointer here, but I can't for the life of me access the data. I get the string "(TrackEnvelope*)0x13F229AC" and envelope[0] is equal to '('



Any help appreciated!

Charles

Latest Reaper OSX

You can't access and modify the raw data of the envelopes unfortunately. You will need to use the API function

bool GetSetEnvelopeState(TrackEnvelope* env, char* str, int maxlen)

to get the envelope's state as a text chunk (formatted the same as the envelopes in the .rpp files) and then do your operations on that, and finally use GetSetEnvelopeState again to update the envelope in Reaper.

[cturner]

Thanks so much for your speedy reply, Xenakios. It does indeed work:

(1, '(TrackEnvelope*)0x13F229AC', '<VOLENV2\nACT 1\nVIS 1 1 1.000000\nLANEHEIGHT 236 0\nARM 1\nDEFSHAPE 0\nPT 0.000000 1.000000 0\nPT 2.000000 1.649123 0\nPT 2.970000 1.570175 5 0 1\nPT 3.490000 1.640351 0\nPT 4.000000 1.578947 0\nPT 4.670000 1.342105 0\nPT 5.250000 1.000000 0\n>\n', 256)

Saved me a lot of looking through the ctypes documentation to see if there was some some of conversion function. <blush>

(Props for all the contributions you've made to Reaper, BTW!)

Best, Charles