appsink new-sample

[killerrats]

when I added the gst_buffer_unref it keeps it down a little but sample unref
will fail. saying:
GStreamer-CRITICAL **: gst_mini_object_unref: assertion
'mini_object->refcount > 0' failed

sometimes it will unref sometimes it won't unref. any ideas?

GstFlowReturn appsink_ToFile (GstElement* object,gpointer data) 
{ 
        GstFlowReturn flow = GST_FLOW_OK; 
        GstSample* _app_sample; 
        
        g_signal_emit_by_name(object,"pull-sample",&_app_sample); 

        if(_app_sample != NULL) 
        {	
                GstMapInfo _app_map; 
                GstBuffer* _app_buffer; 
                _app_buffer = gst_sample_get_buffer(_app_sample); 

                if(gst_buffer_map (_app_buffer, &_app_map, GST_MAP_READ)) 
                { 
                        /// code 
                } 
                        
                if(_app_map.size > 0) 
                { 
                        gst_buffer_unmap (_app_buffer, &_app_map); 
                }
		if (gst_buffer_get_size(_app_buffer) > 0)
		{
		    gst_buffer_unref(_app_buffer);
		}
                if(_app_sample != NULL) 
                { 
                        gst_sample_unref(_app_sample); 
                } 
        } 
        else 
        { 
                pipe->AddToConsoleOutputList("no sample"); 
        } 
        return flow;     
} 



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