tmf/org.eclipse.tracecompass.tmf.core/src/org/eclipse/tracecompass/internal/tmf/core/statesystem/mipmap/MaxMipmapFeature.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 static org.eclipse.tracecompass.common.core.NonNullUtils.checkNotNull;
  16
  17 import java.util.List;
  18
  19 import org.eclipse.tracecompass.statesystem.core.ITmfStateSystemBuilder;
  20 import org.eclipse.tracecompass.statesystem.core.exceptions.StateValueTypeException;
  21 import org.eclipse.tracecompass.statesystem.core.interval.ITmfStateInterval;
  22 import org.eclipse.tracecompass.statesystem.core.statevalue.ITmfStateValue;
  23 import org.eclipse.tracecompass.statesystem.core.statevalue.ITmfStateValue.Type;
  24
  25 /**
  26  * The maximum mipmap feature.
  27  *
  28  * Each mipmap state value is the maximum numerical value of all the non-null
  29  * lower-level state values it covers. The state value is of the same type as
  30  * the base attribute.
  31  */
  32 public class MaxMipmapFeature extends TmfMipmapFeature {
  33
  34     /**
  35      * Constructor
  36      *
  37      * @param baseQuark
  38      *            The quark for the attribute we want to mipmap
  39      * @param mipmapQuark
  40      *            The quark of the mipmap feature attribute
  41      * @param mipmapResolution
  42      *            The resolution that will be use in the mipmap
  43      * @param ss
  44      *            The state system in which to insert the state changes
  45      */
  46     public MaxMipmapFeature(final int baseQuark, final int mipmapQuark, final int mipmapResolution, final ITmfStateSystemBuilder ss) {
  47         super(baseQuark, mipmapQuark, mipmapResolution, ss);
  48     }
  49
  50     @Override
  51     protected ITmfStateValue computeMipmapValue(List<ITmfStateInterval> lowerIntervals, long startTime, long endTime) {
  52         ITmfStateValue maxValue = null;
  53         try {
  54             for (ITmfStateInterval interval : lowerIntervals) {
  55                 ITmfStateValue value = interval.getStateValue();
  56                 if (value.getType() == Type.DOUBLE) {
  57                     if (maxValue == null || value.unboxDouble() > maxValue.unboxDouble()) {
  58                         maxValue = value;
  59                     }
  60                 } else {
  61                     if (maxValue == null || value.unboxLong() > maxValue.unboxLong()) {
  62                         maxValue = value;
  63                     }
  64                 }
  65             }
  66         } catch (StateValueTypeException e) {
  67             e.printStackTrace();
  68         }
  69         return checkNotNull(maxValue);
  70     }
  71 }