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Joined: Mon Sep 10, 2007 1:46 pm
Posts: 12

Post Posted: Thu Oct 04, 2007 2:41 pm 
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Hi,

I use BodyReader to get video frames and wrote the code to test:
Code:
 
   VideoDataHandler *pHandler = new VideoDataHandler(BodySID);

   BodyReaderPtr BodyParser = new BodyReader(theFile);
   BodyParser->MakeGCReader(BodySID);
   GCReaderPtr ThisReader = BodyParser->GetGCReader(BodySID);
   ThisReader->SetDataHandler(TrackNumber_v, pHandler);// I've got the video track number
   for(;;)
   {
        cout<<"BodyParser->Tell(): "<<BodyParser->Tell()<<endl;
      bool Result = BodyParser->ReadFromFile();
      if(!Result)
      {
          if( BodyParser->Eof())
         {
            cout<<"End of file."<<endl;
            break;
         }
         BodyParser->ReSync();
      }
   }



The HandleData() is simple:
Code:
bool VideoDataHandler::HandleData(GCReaderPtr Caller, KLVObjectPtr Object)
{
        cout<<"In VideoDataHandler::HandleData"<<endl;
      return true;
}


The problem is:
Using BodyParser->ReadFromFile() all video frame would be parsed.
Using BodyParser->ReadFromFile(true) the HandleData() will be called only once. Than "End of file."
Who can tell me why? Was the ReadFromFile(true) wrongly used here?


Last edited by LY on Fri Oct 05, 2007 10:22 am, edited 1 time in total.
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Joined: Mon Sep 10, 2007 1:46 pm
Posts: 12

Post Posted: Thu Oct 04, 2007 2:44 pm 
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I use ReadFromFile(true) because I want to stop the process after a certain video frame has been found.

Using ReadFromFile() all KLVs in a partition will be parsed, how can I stop it after the wanted video frame has been found?

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Joined: Mon Sep 10, 2007 1:46 pm
Posts: 12

Post Posted: Fri Oct 05, 2007 10:21 am 
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I made it.
Just add Caller->StopReading() into VideoDataHandler::HandleData() than the process can be stopped.

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