org.eclipse.tracecompass.tmf.core/src/org/eclipse/tracecompass/internal/tmf/core/statesystem/mipmap/MinMipmapFeature.java

   1 /*******************************************************************************
   2  * Copyright (c) 2013, 2014 Ericsson
   3  *
   4  * All rights reserved. This program and the accompanying materials are made
   5  * available under the terms of the Eclipse Public License v1.0 which
   6  * accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     Jean-Christian Kouamé - Initial API and implementation
  11  *     Patrick Tasse - Updates to mipmap feature
  12  *******************************************************************************/
  13 package org.eclipse.tracecompass.internal.tmf.core.statesystem.mipmap;
  14
  15 import java.util.List;
  16
  17 import org.eclipse.tracecompass.statesystem.core.ITmfStateSystemBuilder;
  18 import org.eclipse.tracecompass.statesystem.core.exceptions.StateValueTypeException;
  19 import org.eclipse.tracecompass.statesystem.core.interval.ITmfStateInterval;
  20 import org.eclipse.tracecompass.statesystem.core.statevalue.ITmfStateValue;
  21 import org.eclipse.tracecompass.statesystem.core.statevalue.ITmfStateValue.Type;
  22
  23 /**
  24  * The minimum mipmap feature.
  25  *
  26  * Each mipmap state value is the minimum numerical value of all the non-null
  27  * lower-level state values it covers. The state value is of the same type as
  28  * the base attribute.
  29  */
  30 public class MinMipmapFeature extends TmfMipmapFeature {
  31
  32     /**
  33      * Constructor
  34      *
  35      * @param baseQuark
  36      *            The quark for the attribute we want to mipmap
  37      * @param mipmapQuark
  38      *            The quark of the mipmap feature attribute
  39      * @param mipmapResolution
  40      *            The resolution that will be use in the mipmap
  41      * @param ss
  42      *            The state system in which to insert the state changes
  43      */
  44     public MinMipmapFeature(final int baseQuark, final int mipmapQuark, final int mipmapResolution, final ITmfStateSystemBuilder ss) {
  45         super(baseQuark, mipmapQuark, mipmapResolution, ss);
  46     }
  47
  48     @Override
  49     protected ITmfStateValue computeMipmapValue(List<ITmfStateInterval> lowerIntervals, long startTime, long endTime) {
  50         ITmfStateValue minValue = null;
  51         try {
  52             for (ITmfStateInterval interval : lowerIntervals) {
  53                 ITmfStateValue value = interval.getStateValue();
  54                 if (value.getType() == Type.DOUBLE) {
  55                     if (minValue == null || value.unboxDouble() < minValue.unboxDouble()) {
  56                         minValue = value;
  57                     }
  58                 } else {
  59                     if (minValue == null || value.unboxLong() < minValue.unboxLong()) {
  60                         minValue = value;
  61                     }
  62                 }
  63             }
  64         } catch (StateValueTypeException e) {
  65             e.printStackTrace();
  66         }
  67         return minValue;
  68     }
  69 }