PF_Cmd_SEQUENCE_SETUP called multiple times on the same plugin instance

[r2d3_]

Hello,

I am developing a PremierePro plugin and I would like to allocate an heavy structure (loading files, ...) ONCE per plugin instance.

I was thinking to use PF_Cmd_SEQUENCE_SETUP, but this is called multiple times for the same plugin instance. Even when I change one parameter in the UI, I got succesive calls to 

PF_Cmd_SEQUENCE_SETUP/PF_Cmd_SEQUENCE_FLATTEN

PF_Cmd_SEQUENCE_SETUP/PF_Cmd_SEQUENCE_SETDOWN

So the in_data->sequence_data keeps being allocated/filled/destroyed. 

Thanks in advance

David

[r2d3_]

This is a Video Effect plugin using AE SDK for the  moment. I am wondering if some PremierePro suite could give me a hint ?

[Bruce Bullis]

>...ONCE per plugin instance.

PF_Cmd_GLOBAL_SETUP is the right scope for such allocation. 

[r2d3_]

Sorry I am an not native English. But plugin "instance", I mean the specific instance (with associated parameters) used for a specific sequence. 

If I have 2 sequences A and B with paramA and paramB, I will have pluginInstanceA (using paramA) and pluginInstanceB (using paramB)

[Bruce Bullis]

Ahhh...then PF_Cmd_SEQUENCE_SETUP is the right place. 🙂

From what you've described, it seems as though you've set PF_OutFlag_SEQUENCE_DATA_NEEDS_FLATTENING, during PF_Cmd_GLOBAL_SETUP.

Is that correct?

[r2d3_]

No my current GlobalSetup looks like

out_data->out_flags = PF_OutFlag_WIDE_TIME_INPUT |
                      PF_OutFlag_REFRESH_UI |
                      PF_OutFlag_SEND_UPDATE_PARAMS_UI;

out_data->out_flags2 =	PF_OutFlag2_SUPPORTS_THREADED_RENDERING |
                        PF_OutFlag2_PARAM_GROUP_START_COLLAPSED_FLAG;

Just applying the effect to one layer, I got the call sequence:

SequenceSetup: 0x310a570e0

SequenceFlatten: 0x310a570e0

SequenceSetup: 0x310a571c0

SequenceSetup: 0x310a56ca0

SequenceSetup: 0x310a69a00

[Bruce Bullis]

What outflags are you returning, at the end of your PF_Cmd_SEQUENCE_SETUP response?

[r2d3_]

I don't change them in SequenceSetup !!!

[r2d3_]

AfterEffects SDK only calls PF_NEW_HANDLE to allocate a private structure and fill it and sets 

out_data->out_flags only in the case of an error.

[reimundd1593001 · Accepted solution]

Did you try setting the PF_OutFlag2_PPRO_DO_NOT_CLONE_SEQUENCE_DATA_FOR_RENDER in out_flags2 in in you GlobalSetup selector?

[r2d3_]

Thanks @reimundd1593001 this is exactly what I needed.