| 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 | import org.eclipse.tracecompass.statesystem.core.statevalue.TmfStateValue; |
| 23 | |
| 24 | /** |
| 25 | * The average mipmap feature. |
| 26 | * |
| 27 | * Each mipmap state value is the weighted average by time duration of all the |
| 28 | * lower-level state values it covers. Null state values count as zero in the |
| 29 | * weighted average. The state value is a Double. |
| 30 | */ |
| 31 | public class AvgMipmapFeature extends TmfMipmapFeature { |
| 32 | |
| 33 | /** |
| 34 | * Constructor |
| 35 | * |
| 36 | * @param baseQuark |
| 37 | * The quark for the attribute we want to mipmap |
| 38 | * @param mipmapQuark |
| 39 | * The quark of the mipmap feature attribute |
| 40 | * @param mipmapResolution |
| 41 | * The resolution that will be use in the mipmap |
| 42 | * @param ss |
| 43 | * The state system in which to insert the state changes |
| 44 | */ |
| 45 | public AvgMipmapFeature(final int baseQuark, final int mipmapQuark, final int mipmapResolution, final ITmfStateSystemBuilder ss) { |
| 46 | super(baseQuark, mipmapQuark, mipmapResolution, ss); |
| 47 | } |
| 48 | |
| 49 | @Override |
| 50 | protected ITmfStateValue computeMipmapValue(List<ITmfStateInterval> lowerIntervals, long startTime, long endTime) { |
| 51 | long range = endTime - startTime; |
| 52 | if (range <= 0) { |
| 53 | return TmfStateValue.newValueDouble(0.0); |
| 54 | } |
| 55 | double sum = 0.0; |
| 56 | try { |
| 57 | for (ITmfStateInterval interval : lowerIntervals) { |
| 58 | ITmfStateValue value = interval.getStateValue(); |
| 59 | long duration = interval.getEndTime() - interval.getStartTime(); |
| 60 | if (value.getType() == Type.DOUBLE) { |
| 61 | sum += value.unboxDouble() * duration; |
| 62 | } else { |
| 63 | sum += (double) value.unboxLong() * duration; |
| 64 | } |
| 65 | } |
| 66 | } catch (StateValueTypeException e) { |
| 67 | e.printStackTrace(); |
| 68 | } |
| 69 | double average = sum / range; |
| 70 | ITmfStateValue avgValue = TmfStateValue.newValueDouble(average); |
| 71 | return avgValue; |
| 72 | } |
| 73 | } |