How to access source id of frame in case of multiple streams ?

I have been trying to access source_id of frame in presence of multiple sources.

frame_meta = (NvDsFrameMeta *) (l_frame->data);
      NvOSD_RectParams rect_params;
      guint source_id_info = frame_meta->source_id;
[source0]
enable=1
#Type - 1=CameraV4L2 2=URI 3=MultiURI 4=RTSP
type=3
uri=file://../../streams/sample_1080p_h264.mp4
num-sources=1
gpu-id=0
drop-frame-interval=5
# (0): memtype_device   - Memory type Device
# (1): memtype_pinned   - Memory type Host Pinned
# (2): memtype_unified  - Memory type Unified
cudadec-memtype=0

[source1]
enable=0
#Type - 1=CameraV4L2 2=URI 3=MultiURI 4=RTSP
type=3
uri=file://../../streams/sample_1080p_h264.mp4
num-sources=1
gpu-id=0
# (0): memtype_device   - Memory type Device
# (1): memtype_pinned   - Memory type Host Pinned
# (2): memtype_unified  - Memory type Unified
cudadec-memtype=0

Will appreciate any form of hint or direction

https://devtalk.nvidia.com/default/topic/1061492/deepstream-sdk/deepstream-sdk-faq/ -> 6. How to get source_id

Hi Chris,

https://devtalk.nvidia.com/default/topic/1062520/deepstream-sdk/getting-source-stream-id-from-nvosd-plugin/post/5380861/#5380861

I am trying to retrieve data in deepstrean-app, deepstream_app_main.c

static void
all_bbox_generated (AppCtx * appCtx, GstBuffer * buf,
    NvDsBatchMeta * batch_meta, guint index)
{
    guint final_count;   
    guint motorcycle;
    NvDsMetaList * l_frame = NULL;
    NvDsMetaList * l_obj = NULL;
    NvDsObjectMeta *obj_meta = NULL;
for (l_frame = batch_meta->frame_meta_list; l_frame != NULL;
      l_frame = l_frame->next) {
        NvDsFrameMeta *frame_meta = (NvDsFrameMeta *) (l_frame->data);
        for (l_obj = frame_meta->obj_meta_list; l_obj != NULL;
                l_obj = l_obj->next) {
            obj_meta = (NvDsObjectMeta *) (l_obj->data);
            if (obj_meta->class_id == PGIE_CLASS_ID_VEHICLE) {
              final_count =  motorcycle ++; 
              g_print("count: %d, \n",final_count);
        }
      }
   }
}
guint source_id_info = frame_meta->source_id;
g_print("Source: %s",
      appCtx->config.multi_source_config[source_ids[index]].uri);

Both returned null, any pointers on how to solve this? , I have 42 sources on this instance

solved

g_print("\ntest: %d",source_ids[index]);