Hi,
I want to write a sink plugin to crop image from source buffer and save, I don’t want to use eglsink to show. if there are some demos to reference ?
Thanks.
Hi,
We have implemented ‘Encode + File Save’
https://docs.nvidia.com/metropolis/deepstream/4.0/dev-guide/index.html#page/DeepStream_Development_Guide%2Fdeepstream_app_config.3.2.html%23wwpID0ENHA
Please refer to source code of deepstream-app.
Hi,
I have another question:
When In nvinfer plugin callback function, I added object meta to frame
nvds_add_obj_meta_to_frame(frame_meta, object_meta, NULL);
So if I have to do release function in my sink plugins like below use “nvds_remove_obj_meta_from_frame(frame_meta, obj_meta);”:
for (l_obj = frame_meta->obj_meta_list; l_obj != NULL;
l_obj = l_obj->next){
obj_meta = (NvDsObjectMeta *) (l_obj->data);
_FaceDetectInfo fdi;
fdi.bbox.left = obj_meta->rect_params.left;
fdi.bbox.top = obj_meta->rect_params.top;
fdi.bbox.width = obj_meta->rect_params.width;
fdi.bbox.height = obj_meta->rect_params.height;
fdi.bbox.score = obj_meta->confidence;
fdi.objID = obj_meta->object_id;
g_print ("obj_meta address is %d.\n", obj_meta);
g_print ("obj_meta left address is %d.\n", fdi.bbox.left);
g_print ("obj_meta top address is %d.\n", fdi.bbox.top);
g_print ("obj_meta width address is %d.\n", fdi.bbox.width);
g_print ("obj_meta height address is %d.\n", fdi.bbox.height);
// NvDsUserMetaList *usr_data = obj_meta->obj_user_meta_list;
// g_print ("usr_data address is %d.\n", usr_data);
// NvDsUserMeta *data = (NvDsUserMeta *)(usr_data->data);
// _FacePts *pts = (_FacePts *)(data->user_meta_data);
// fdi.facePts.score = pts->score;
// fdi.facePts.ptsNum = pts->ptsNum;
frameinfo.faceInfo.emplace_back(fdi);
nvds_remove_obj_meta_from_frame(frame_meta, obj_meta);
}
and when I even I used this function, and frame has not any object anymore, there always exists two object address in frame, if this is a bug?
Thanks.