RetrieveFile,RTP,WebService

shivakun

Hi,
could anyone tell me how to pass rtpPrimitives's elements info.
i want to set mElements's Output Width & Output Height properites based on the image original size.

ie..
Output Width=900
Output Height=900

could any one give me JAVA sample code?.

Thanks

msnider

So RTP tasks are probably one of the more complex topics of MediaBin in general. If your output format is either JPEG or GIF, you can use the RetrieveAsJPEG* or RetrieveAsGIF* methods which will allow you to specify output width and height without getting into the more complex details of true RTP tasks.

If your output is neither GIF or JPEG or your task includes primitives other than the flattener, colorconverter and imagesizer and metadata remover, then here's a sample C# method that illustrates what steps need to be done to create an array of MBRuntimeParameters (I know you had asked for a Java sample, but I don't have one readily available. However, the translation should only require a minimal amount of effort)

 public static MBRunTimePrimitive[] BuildRunTimePrimitives( MBTask task, int width, int height, bool bConstrainProportions )
  {
   //Note, rtpPrimitives only has to contain primitives that we are
   //changing values for
   MBRunTimePrimitive[] rtpPrimitives = null;

   //The task must have at least one runtime paramter
   if( task != null  && task.IsRunTimeSettable )
   {
    //Find the Image sizer primitive in the list of primitives
    MBPrimitive primitive = null;

    IEnumerator i = task.mPrimitives.GetEnumerator();

    while( i.MoveNext() )
    {
     MBPrimitive obj = (MBPrimitive) i.Current;

     if( obj.mID == "{82637480-F111-11D2-8181-00104B2A9F09}" )  //id of the imagesizer primitive
     {
      primitive = obj;
      break;
     }
    }

    if( primitive != null )
    { 

     rtpPrimitives = new MBRunTimePrimitive[1];

     rtpPrimitives[0] = new MBRunTimePrimitive();
     rtpPrimitives[0].mID = primitive.mID;

     //Iterate thru all the parameters, setting the ones we are interested in
     //In this case, we have to send back the complete list of parameters

     i = primitive.mParameters.GetEnumerator();
     ArrayList arr = new ArrayList();

     while( i.MoveNext() )
     {
      MBParameter parameter = (MBParameter) i.Current;

      MBRunTimeParameter rtpParameter = new MBRunTimeParameter();

      rtpParameter.mID = parameter.mID;

      //get a copy of th default parameters
      rtpParameter.mElements = new MBParameterElement[ parameter.mElements.Length ];
      parameter.mElements.CopyTo( rtpParameter.mElements, 0 );  

      //The imagesizer has compound parameters, we need the one that contains the
      //width, height and constrain proportions elements       
      if( rtpParameter.mID == "{04D3C0C0-5597-11D3-81E2-00104B2A9F09}" )  
      {
       //Iterate thru the parameters, only changing width, height and constrain proportions
       IEnumerator j = rtpParameter.mElements.GetEnumerator();

       while( j.MoveNext() )
       {
        MBParameterElement element = (MBParameterElement) j.Current;

        if( element.mName == "Output Width" )
         element.mValue = (double) width;
        else if( element.mName == "Output Height" )
         element.mValue = (double) height;
        else if( element.mName == "Constrain Proportions" )
         element.mValue =bConstrainProportions; 

        //we don't need to send format or name
        element.mFormat = null;
        element.mName = null;
       }
      }

      arr.Add( rtpParameter );
     }      

     rtpPrimitives[0].mParameters = new MBRunTimeParameter[ arr.Count];

     arr.CopyTo( rtpPrimitives[0].mParameters, 0 );      
    }     
   }

   return rtpPrimitives;

  }

Hope this helps,
Mark