Release or Remove UserMeta or FrameMeta Required?

AI & Data Science Computer Vision & Image Processing
1

Hello,

We are acquiring UserMeta from BatchMeta and then we are adding UserMeta to Frame for Further Use using following code Sequence.

NvDsBatchMeta *batch_meta = gst_buffer_get_nvds_batch_meta(GST_BUFFER(info->data));

NvDsUserMeta *user_payload_meta = nvds_acquire_user_meta_from_pool(batch_meta);
if (user_payload_meta)
{
                        user_payload_meta->user_meta_data = (void *)nvPayload;
                        user_payload_meta->base_meta.meta_type = NVDS_PAYLOAD_META;
                        user_payload_meta->base_meta.copy_func = (NvDsMetaCopyFunc)&DeepStreamFrameUserMeta::copyNvDsPayloadMeta;
                        user_payload_meta->base_meta.release_func = (NvDsMetaReleaseFunc)&DeepStreamFrameUserMeta::freeNvDsPayloadMeta;
                        string topic = INFER_META_SUBJ + (pInferConfig->inferenceBranchId) + "." + to_string(metaDataPayloadBuffer.sourceId);
                        user_payload_meta->base_meta.uContext = strdup(topic.c_str());
                        nvds_add_user_meta_to_frame((NvDsFrameMeta *)frame_meta, user_payload_meta);
}

and Release Function is written as follows.

void DeepStreamFrameUserMeta::freeNvDsPayloadMeta(gpointer data, gpointer uData)
{
        g_return_if_fail (data);

        NvDsUserMeta *user_meta = (NvDsUserMeta *) data;
        NvDsPayload *srcPayload = (NvDsPayload *) user_meta->user_meta_data;

        if (srcPayload)
        {
                g_free(srcPayload->payload);
                srcPayload->payload = NULL;
                g_free(srcPayload);
                srcPayload = NULL;
        }

        if (user_meta->base_meta.uContext) {
                free(user_meta->base_meta.uContext);
                user_meta->base_meta.uContext = NULL;
        }
}

Is it required to release or remove UserMeta or BatchMeta or FrameMeta using API inside release_func to avoid memory leaks gradually against following two functions ?

  1. nvds_acquire_user_meta_from_pool
  2. nvds_add_user_meta_to_frame

Regards