public string ProcessVideo(string videoFilename, bool search = true, bool onDemand = true, bool keepFrames = false)
{
string statusMsg = "";
LayerB layerB = new LayerB(videoFilename, search, searchServerAddress); //TODO: ensure that search server address is not null
try
{
statusMsg = layerB.Process(onDemand, keepFrames);
}
catch (Exception err)
{
statusMsg = err.Message;
}
return(statusMsg);
}
//call-back method that polls queue to get filename and search/store parameter
static void timer_queuePoll_Elapsed(object sender, ElapsedEventArgs e)
{
timer_queuePoll.Enabled = false;
List <string> items = new List <string>(); //although queue set to currently return one item
List <string> item_handles = new List <string>();
string statusMsg = "";
//get video filename from sqs queue
item_handles = CloudServices.CloudServices.GetObjects(ref items, ref statusMsg);
//check error
if (statusMsg != "")
{
LogManager.Write(statusMsg, "ERROR");
timer_queuePoll.Enabled = false;
return;
}
/* decode item and get videofilename and search/store parameter, then proess it */
string videoFilename;
bool isSearch;
for (int i = 0; i < items.Count; i++)
{
string item = items[0];
//video filename
videoFilename = item.Substring(0, item.IndexOf("\n"));
//to search or to store?
string srch = item.Substring(item.IndexOf("\n") + 1, 1);
if (srch == "1")
{
isSearch = true;
}
else
{
isSearch = false;
}
//item handle
string itemHandle = item_handles[i];
//process video
LayerB layerB = new LayerB(videoFilename, isSearch, searchServerAdress);
try
{
//process
layerB.Process();
//remove from queue
CloudServices.CloudServices.RemoveObject(itemHandle, ref statusMsg);
}
catch (Exception err)
{
statusMsg = err.Message;
}
}
//done processing (if item was in recevived from queue). Enable timer for next poll
timer_queuePoll.Enabled = true;
}