I’m trying to take snapshots on the TX1 on a gstreamer pipeline as the following :
nvcamerasrc ! jpegenc ! appsink
I dont want to sent the pipeline from NULL->PLAYING and back everytime I need a snapshot, since I want it to be as close as it can to the discrete time value from where I asked for the snapshot. Swiching from PAUSE->PLAYING doesn’t work since the nvcamerasrc has q internal queue of 10 buffers, so I get older buffers for my snapshots. I made an application using libargus to test if this could be done and I was able to take snapshots really fast at discrete values, but using nvcamerasrc is a bit more convenient for me. I see two properties on nvcamerasrc that resembles some functiionality exposed on libargus:
trigger : property to fire pre capture trigger flags: readable, writable Enum "GstNvCamCaptureTrigger" Default: 0, "" (1): idle - GST_NVCAM_TRIGGER_IDLE (2): start - GST_NVCAM_TRIGGER_START intent : property to select capture intent flags: readable, writable Enum "GstNvCamCaptureIntent" Default: 1, "preview" (1): preview - GST_NVCAM_INTENT_PREVIEW (2): still - GST_NVCAM_INTENT_STILL (3): video - GST_NVCAM_INTENT_VIDEO (4): video-snapshot - GST_NVCAM_INTENT_VIDEO_SNAPSHOT (5): zsl - GST_NVCAM_INTENT_ZSL
I got the following questions;
1- Are these properties working?
2- If so, can someone provide an example on how to use them properly?
3- Will they work for my particular worcase or they are intended for something else?