svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.library / org.gvsig.raster / org.gvsig.raster.lib / org.gvsig.raster.lib.buffer.impl / src / main / java / org / gvsig / raster / lib / buffer / impl / PaginatedBandByte.java @ 44831
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1 | 44831 | jjdelcerro | package org.gvsig.raster.lib.buffer.impl; |
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2 | |||
3 | import java.nio.ByteBuffer; |
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4 | import java.util.Arrays; |
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5 | |||
6 | import org.slf4j.Logger; |
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7 | import org.slf4j.LoggerFactory; |
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8 | |||
9 | import org.gvsig.raster.lib.buffer.api.Band.BandByte; |
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10 | import org.gvsig.raster.lib.buffer.api.BandNotification; |
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11 | import org.gvsig.raster.lib.buffer.api.BandPageManager; |
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12 | import org.gvsig.raster.lib.buffer.api.BufferManager; |
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13 | import org.gvsig.raster.lib.buffer.api.NoData; |
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14 | |||
15 | /**
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16 | * @author fdiaz
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17 | *
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18 | */
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19 | public class PaginatedBandByte extends AbstractPaginatedBand implements BandByte { |
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20 | |||
21 | private static final Logger logger = |
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22 | LoggerFactory.getLogger(PaginatedBandByte.class); |
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23 | |||
24 | /**
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25 | * @param rows
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26 | * @param columns
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27 | * @param noData
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28 | * @param pageManager
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29 | */
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30 | public PaginatedBandByte(int rows, int columns, NoData noData, BandPageManager pageManager) { |
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31 | super(rows, columns, noData, pageManager);
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32 | } |
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33 | |||
34 | @Override
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35 | public int getDataType() { |
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36 | return BufferManager.TYPE_BYTE;
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37 | } |
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38 | |||
39 | protected int getDataSize() { |
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40 | return 1; |
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41 | } |
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42 | |||
43 | @Override
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44 | public Object get(int row, int column) { |
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45 | return getValue(row, column);
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46 | } |
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47 | |||
48 | @Override
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49 | protected void doSet(int row, int column, Object value) { |
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50 | setValue(row, column, (byte) value);
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51 | } |
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52 | |||
53 | @Override
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54 | protected void doFill(Object value) { |
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55 | value = nullValueToNoData(value); |
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56 | if(value == null){ |
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57 | value = 0;
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58 | } |
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59 | |||
60 | for(int row=0; row<this.rows; row+=this.rowsPerPage){ |
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61 | loadPage(row); |
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62 | Arrays.fill((byte[])data.array(), (byte)value); |
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63 | } |
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64 | } |
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65 | |||
66 | @Override
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67 | public byte getValue(int row, int column) { |
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68 | loadPage(row); |
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69 | return ((ByteBuffer) data).get( ((row-firstRowOfPage)*this.columns) + column); |
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70 | } |
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71 | |||
72 | @Override
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73 | public void setValue(int row, int column, byte value) { |
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74 | doSetValue(row, column, value); |
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75 | notifyObservers(new DefaultBandNotification(BandNotification.SET, new Object[]{row, column, value})); |
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76 | } |
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77 | |||
78 | protected void doSetValue(int row, int column, byte value) { |
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79 | loadPage(row); |
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80 | ((ByteBuffer) data).put(((row-firstRowOfPage)*this.columns) + column, value); |
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81 | } |
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82 | |||
83 | @Override
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84 | public byte[] createRowBuffer() { |
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85 | return new byte[getColumns()]; |
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86 | } |
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87 | |||
88 | @Override
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89 | public void fetchRow(int row, Object rowBuffer) { |
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90 | loadPage(row); |
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91 | byte[] source = (byte[]) data.array(); |
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92 | byte[] target = (byte[]) rowBuffer; |
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93 | System.arraycopy(source, (row-firstRowOfPage)*this.columns, target, 0, this.columns); |
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94 | } |
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95 | |||
96 | @Override
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97 | protected void doPutRow(int row, Object rowBuffer) { |
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98 | loadPage(row); |
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99 | byte[] source = (byte[]) rowBuffer; |
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100 | byte[] target = (byte[]) data.array(); |
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101 | System.arraycopy(source, 0, target, (row-firstRowOfPage)*this.columns, this.columns); |
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102 | } |
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103 | |||
104 | @Override
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105 | protected void loadPage(int row) { |
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106 | if (data == null) { |
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107 | data = ByteBuffer.allocate(calculateBufferSizeToAllocate(rows, columns));
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108 | } |
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109 | super.loadPage(row);
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110 | } |
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111 | |||
112 | } |