Gst-nvmsgconv new api for Deepstream 6.0

[user67262]

• Hardware Platform GPU
• DeepStream Version 6.0
• Issue Type questions

Hi, looking at the docs for deepstream 6’s nvmsgconv, there’s mention of a new api that allows for a NvDsPayload from just NvDsFrameMeta or NvDsObjectMeta. I would like to ask if there are any examples for doing so or can we see the new source code for this. The current sources/gst-plugins/gst-nvmsgconv still seems to be the old one and does not mention the newapi property.

My use case is to try to set up deepstream with event/detection metadata streaming from gst-launch-1.0 alone, so that I can use something like RidgeRun’s gstd to easily manage dynamic pipelines.

[Fiona.Chen]

The related code can be found in gst_nvmsgconv_transform_ip() in /opt/nvidia/deepstream/deepstream-6.0/sources/gst-plugins/gst-nvmsgconv/gstnvmsgconv.c

...
     if(self->msg2pNewApi){
        //generate payload at frameInterval(ex: every 30th frame)
        if(self->frameInterval && (((NvDsFrameMeta*)frame_meta)->frame_num % self->frameInterval))
            continue;
        guint payloadCount=0;
        NvDsMsg2pMetaInfo meta_info;
        meta_info.objMeta = NULL;
        meta_info.frameMeta = frame_meta;
        meta_info.mediaType = self->is_video?"video":"audio";

        if (self->payloadType == NVDS_PAYLOAD_DEEPSTREAM_MINIMAL) {
       ...
``

[user67262]

Hmm I think this file wasn’t updated in the containers. Last updated May 26 2021. I’ve looked at both the container tags nvcr.io/nvidia/deepstream:6.0-ea-21.06-triton and nvcr.io/nvidia/deepstream:6.0-base

root@70f06a07bd3c:/opt/nvidia/deepstream/deepstream-6.0/sources/gst-plugins/gst-nvmsgconv# ls -l
total 36
-rw-r--r-- 1 root root  1531 May 26  2021 Makefile
-rw-r--r-- 1 root root  1092 May 26  2021 README
-rw-r--r-- 1 root root 22273 May 26  2021 gstnvmsgconv.c
-rw-r--r-- 1 root root  2380 May 26  2021 gstnvmsgconv.h

[Fiona.Chen]

nvcr.io/nvidia/deepstream:6.0-ea-21.06-triton is DeepStream 6.0 EA version.

The newAPI is introduced by DS 6.0 GA version.

And there is no source code released with nvcr.io/nvidia/deepstream:6.0-base container. It is just for basic function not for development.

Please read the document carefully. Docker Containers — DeepStream 6.1.1 Release documentation

[user67262]

Oh I apologize for my mistake. Let me pull the nvcr.io/nvidia/deepstream:6.0-triton to check.

Edit: Found it. Once again, sorry for the mistake and thanks for your time!

Also, is there anywhere to download just the sources without having to pull the whole container?

[Fiona.Chen]

No. The code is a part of the SDK.