Please provide complete information as applicable to your setup.
• Hardware Platform (Jetson / GPU)
3080ti
• DeepStream Version
6.1 triton
In the existing metadata format, object data is created per frame.
ex)
However, I want it to be created per object, not per frame.
I want to create only one object metadata at a time
so I try to modify source\libs\nvmsgconv\deepstream_schema\eventmsg_payload.cpp
But I don’t know how to fix it, so I’m asking like this
You can use nlohmann json inside a probe after you finish your analytics to put the object in the JSON format you want and send the meta-data object by object (after formatting it with nlohmann json) with librdkafka to the connection string and the topic you want.
I called the “generate_event_message” function as many times as the number of objects using the for statement in the “nvds_msg2p_generate” function.
so, I confirmed that the json string created in object units was stored in the “message” variable in “nvds_msg2p_generate” function
However, the metadata is saved in the variable, but when I checked the data transmitted from MongoDB, only one object data was saved for each frame.
I think the payload size is set to 1 so only one data is sent per frame. What should I do to solve this?
This is the code and output
NvDsPayload*
nvds_msg2p_generate (NvDsMsg2pCtx *ctx, NvDsEvent *events, guint size)
{
gchar *message = NULL;
gint len = 0;
NvDsPayload *payload = (NvDsPayload *) g_malloc0 (sizeof (NvDsPayload));
for(int i=0; i<size; i++)
{
NvDsEventMsgMeta *meta=events[i].metadata;
if (ctx->payloadType == NVDS_PAYLOAD_DEEPSTREAM) {
message = generate_event_message (ctx->privData, meta,size); //남겨둬
if (message) {
len = strlen (message);
// Remove '\0' character at the end of string and just copy the content.
payload->payload = g_memdup (message, len);
payload->payloadSize = len;
g_free (message);
}
} else if (ctx->payloadType == NVDS_PAYLOAD_DEEPSTREAM_MINIMAL) {
NvDsEventMsgMeta *meta=events[i].metadata;
message = generate_event_message_minimal (ctx->privData, meta, size);
printf("%s\n", message);
oid : 9
@ generate_schema_message: frameId=3
obj_tracking_id : 9
{
"version" : "Nov 21 2022 06:03:10",
"timestamp" : 20221121060326389,
"id" : 3,
"sensorId" : 0,
"object" : {
"id" : 9,
"type" : "person",
"bbox" : [
296,
441,
183,
425
],
"attributes" : {
"person" : 0.92797297239303589,
"age" : 0.0,
"gender" : 0.0,
"backpack" : 0.0,
"hat" : 0.0,
"mask" : 0.0,
"sunglass" : 0.0,
"knife" : 0.0
},
"event" : {
"id" : "abf50386-64bb-4e08-9cd1-20c85fd676e7",
"type" : "custom(257)"
}
}
}
len : 545
p_len : 545
oid : 8
@ generate_schema_message: frameId=3
obj_tracking_id : 8
{
"version" : "Nov 21 2022 06:03:10",
"timestamp" : 20221121060326389,
"id" : 3,
"sensorId" : 0,
"object" : {
"id" : 8,
"type" : "person",
"bbox" : [
0,
385,
201,
628
],
"attributes" : {
"person" : 0.92182183265686035,
"age" : 0.0,
"gender" : 0.0,
"backpack" : 0.0,
"hat" : 0.0,
"mask" : 0.0,
"sunglass" : 0.0,
"knife" : 0.0
},
"event" : {
"id" : "43e26e66-ee3a-429c-9d77-c25f855f7e7f",
"type" : "custom(257)"
}
}
}
len : 543
p_len : 543
oid : 7
@ generate_schema_message: frameId=3
obj_tracking_id : 7
{
"version" : "Nov 21 2022 06:03:10",
"timestamp" : 20221121060326389,
"id" : 3,
"sensorId" : 0,
"object" : {
"id" : 7,
"type" : "person",
"bbox" : [
109,
465,
99,
309
],
"attributes" : {
"person" : 0.72545462846755981,
"age" : 0.0,
"gender" : 0.0,
"backpack" : 0.0,
"hat" : 0.0,
"mask" : 0.0,
"sunglass" : 0.0,
"knife" : 0.0
},
"event" : {
"id" : "278e2e47-94e5-4c54-a0a7-693f9db714ad",
"type" : "custom(257)"
}
}
}
len : 544
p_len : 544
oid : 6
@ generate_schema_message: frameId=3
obj_tracking_id : 6
{
"version" : "Nov 21 2022 06:03:10",
"timestamp" : 20221121060326389,
"id" : 3,
"sensorId" : 0,
"object" : {
"id" : 6,
"type" : "person",
"bbox" : [
430,
478,
32,
63
],
"attributes" : {
"person" : 0.44704768061637878,
"age" : 0.0,
"gender" : 0.0,
"backpack" : 0.0,
"hat" : 0.0,
"mask" : 0.0,
"sunglass" : 0.0,
"knife" : 0.0
},
"event" : {
"id" : "bc89ea17-4a0c-4f90-891a-d863e5495b7a",
"type" : "custom(257)"
}
}
}
len : 543
p_len : 543
oid : 5
@ generate_schema_message: frameId=3
obj_tracking_id : 5
{
"version" : "Nov 21 2022 06:03:10",
"timestamp" : 20221121060326389,
"id" : 3,
"sensorId" : 0,
"object" : {
"id" : 5,
"type" : "person",
"bbox" : [
440,
477,
41,
73
],
"attributes" : {
"person" : 0.27274742722511292,
"age" : 0.0,
"gender" : 0.0,
"backpack" : 0.0,
"hat" : 0.0,
"mask" : 0.0,
"sunglass" : 0.0,
"knife" : 0.0
},
"event" : {
"id" : "a632fd17-e167-4125-adc6-9f66c9314ef6",
"type" : "custom(257)"
}
}
}
len : 543
p_len : 543
oid : 4
@ generate_schema_message: frameId=3
obj_tracking_id : 4
{
"version" : "Nov 21 2022 06:03:10",
"timestamp" : 20221121060326389,
"id" : 3,
"sensorId" : 0,
"object" : {
"id" : 4,
"type" : "car",
"bbox" : [
708,
0,
1211,
1077
],
"attributes" : {
"car" : 0.9611087441444397,
"color" : 0.0,
"model" : 0.0
},
"event" : {
"id" : "d069029b-6b82-420f-b5c1-38f62395b07d",
"type" : "custom(257)"
}
}
}
len : 431
p_len : 431
oid : 3
@ generate_schema_message: frameId=3
obj_tracking_id : 3
{
"version" : "Nov 21 2022 06:03:10",
"timestamp" : 20221121060326389,
"id" : 3,
"sensorId" : 0,
"object" : {
"id" : 3,
"type" : "car",
"bbox" : [
619,
494,
101,
78
],
"attributes" : {
"car" : 0.87681102752685547,
"color" : 0.0,
"model" : 0.0
},
"event" : {
"id" : "10494c86-d474-42a7-8af4-605e709b76fb",
"type" : "custom(257)"
}
}
}
len : 431
p_len : 431
oid : 2
@ generate_schema_message: frameId=3
obj_tracking_id : 2
{
"version" : "Nov 21 2022 06:03:10",
"timestamp" : 20221121060326389,
"id" : 3,
"sensorId" : 0,
"object" : {
"id" : 2,
"type" : "car",
"bbox" : [
544,
476,
56,
44
],
"attributes" : {
"car" : 0.7517927885055542,
"color" : 0.0,
"model" : 0.0
},
"event" : {
"id" : "9d139cf6-02cd-4ac9-9326-f7480a9a560c",
"type" : "custom(257)"
}
}
}
len : 429
p_len : 429
oid : 1
@ generate_schema_message: frameId=3
obj_tracking_id : 1
{
"version" : "Nov 21 2022 06:03:10",
"timestamp" : 20221121060326389,
"id" : 3,
"sensorId" : 0,
"object" : {
"id" : 1,
"type" : "car",
"bbox" : [
592,
483,
63,
49
],
"attributes" : {
"car" : 0.57813525199890137,
"color" : 0.0,
"model" : 0.0
},
"event" : {
"id" : "bb4fb9cf-46df-4b25-9e1c-9ce8541cb546",
"type" : "custom(257)"
}
}
}
len : 430
p_len : 430
oid : 0
@ generate_schema_message: frameId=3
obj_tracking_id : 0
{
"version" : "Nov 21 2022 06:03:10",
"timestamp" : 19700101000000000,
"id" : 3,
"sensorId" : 0,
"object" : {
"id" : 0,
"type" : "car",
"bbox" : [
513,
457,
41,
25
],
"attributes" : {
"car" : 0.38462930917739868,
"color" : 0.0,
"model" : 0.0
},
"event" : {
"id" : "75a4ef82-1b8a-46ef-8f5b-95a736eeb215",
"type" : "custom(257)"
}
}
}
I want to know how to set “nvds_msg2p_generate_multiple”
I want to use “nvds_msg2p_generate_multiple” function
What do I need to set up?(config file, code …)
you can use multiple-payloads property of nvmsgconv, please refer to https://docs.nvidia.com/metropolis/deepstream/dev-guide/text/DS_plugin_gst-nvmsgconv.html
tank you
I resolved!!
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