ia.fetch(is_raw=True) buffer queue

[juhanih-work]

I have used fetch(is_raw=False) earlier and handled the data with python and the buffer is released manually with the queue() method.

Now I am unable to queue the buffer with ia.fetch(is_raw=True) which returns a genicam.gentl.Buffer object that doesn't have a queue() method or at least I have not found a way to do that. The documentation for is_raw=true says that I have to manipulate the buffer myself but I have no clue how to release it.

If I try to use the with-statement for ia.fetch(), I get "AttributeError: enter".

Configuration

• OS: Linux
• Python: 3.10.12
• Harvester: 1.4.3
• GenTL Producer: basler pylon 8.1.0
• Camera: basler a2A2048-114umbas

This phenomenon can be stably reproduced:

• [X ] Yes

• I've read the Harvester FAQ page.

[juhanih-work]

I found a solution:
raw_buffer = ia.fetch(is_raw=True)
---Do stuff and copy the buffer data---
ds = ia._data_streams[0]
ds.module.queue_buffer(raw_buffer)

This works in my case but I have no idea what happens if there is more than one buffer in the output queue.