gvsig-raster / org.gvsig.raster / trunk / org.gvsig.raster / org.gvsig.raster.lib / org.gvsig.raster.lib.impl / src / main / java / org / gvsig / raster / impl / BufferFactoryImpl.java @ 2443
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package org.gvsig.raster.impl; |
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import org.gvsig.fmap.dal.coverage.BufferFactory; |
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import org.gvsig.fmap.dal.coverage.RasterLibrary; |
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import org.gvsig.fmap.dal.coverage.dataset.Buffer; |
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import org.gvsig.fmap.dal.coverage.dataset.BufferParam; |
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import org.gvsig.fmap.dal.coverage.datastruct.BandList; |
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import org.gvsig.fmap.dal.coverage.exception.BufferCreationException; |
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import org.gvsig.fmap.dal.coverage.store.RasterDataStore; |
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import org.gvsig.raster.impl.buffer.BufferParamImpl; |
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import org.gvsig.raster.impl.buffer.RasterBuffer; |
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import org.gvsig.raster.impl.buffer.RasterMemoryBuffer; |
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import org.gvsig.raster.impl.buffer.cache.RasterCache; |
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import org.gvsig.raster.impl.buffer.cache.RasterReadOnlyBuffer; |
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import org.gvsig.raster.impl.store.QueryableRaster; |
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import org.gvsig.raster.util.DefaultRasterUtils; |
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/**
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* Factory for raster buffers
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* @author Nacho Brodin (nachobrodin@gmail.com)
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*/
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public class BufferFactoryImpl implements BufferFactory { |
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public Buffer createBuffer(BufferParam param) throws BufferCreationException { |
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if(param.getAccessType() == BufferParam.CACHED) {
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if(RasterBuffer.cacheOn){
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long sizeDataType = (long)new DefaultRasterUtils().getBytesFromRasterBufType(param.getDataType()); |
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long size = (long)(sizeDataType * (long)param.getWidth() * (long)param.getHeight() * (long)param.getBandCount()) / 1024L; |
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long ms1 = RasterLibrary.cacheSize * 1024L; |
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if(size <= ms1)
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return createMemoryBuffer(param);
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else
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return new RasterCache( |
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param.getDataType(), |
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param.getWidth(), |
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param.getHeight(), |
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param.getBandCount()); |
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}else
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return createMemoryBuffer(param);
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} |
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if(param.getAccessType() == BufferParam.MEMORY) {
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return createMemoryBuffer(param);
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} |
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if(param.getAccessType() == BufferParam.READ_ONLY) {
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RasterReadOnlyBuffer rb = new RasterReadOnlyBuffer(
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param.getDataType(), |
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param.getWidth(), |
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param.getHeight(), |
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param.getBandCount()); |
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RasterDataStore store = param.getDataStore(); |
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int[] window = param.getRoWindow(); |
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checkROWindow(window, store); |
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try {
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rb.setBufferParams( |
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(QueryableRaster)param.getDataStore(), |
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window[0],
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window[1],
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window[2],
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window[3],
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param.getBandList()); |
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return rb;
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} catch (Exception e) { |
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throw new BufferCreationException("error_creating_ro_buffer", e); |
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} |
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} |
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return null; |
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} |
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private void checkROWindow(int[] window, RasterDataStore store) throws BufferCreationException { |
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if( window[0] < 0 || |
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window[1] < 0 || |
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window[2] >= store.getWidth() ||
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window[3] >= store.getHeight() ||
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window[0] >= window[2] || |
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window[1] >= window[3]) |
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throw new BufferCreationException("window_not_valid"); |
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} |
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private Buffer createMemoryBuffer(BufferParam param) { |
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return new RasterMemoryBuffer( |
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param.getDataType(), |
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param.getWidth(), |
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param.getHeight(), |
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param.getBandCount(), |
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param.isMalloc()); |
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} |
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public BufferParam createBufferParams(
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int w,
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int h,
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int bandCount,
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int dataType,
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boolean malloc) {
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return new BufferParamImpl(w, h, bandCount, dataType, malloc, BufferParam.CACHED); |
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} |
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public BufferParam createMemoryBufferParams(
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int w,
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int h,
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int bandCount,
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int dataType,
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boolean malloc) {
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return new BufferParamImpl(w, h, bandCount, dataType, malloc, BufferParam.MEMORY); |
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} |
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public BufferParam createReadOnlyBufferParams(
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RasterDataStore store, |
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int minx,
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int miny,
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int maxx,
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int maxy,
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BandList bandList) {
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return new BufferParamImpl(store, new int[]{minx, miny, maxx, maxy}, bandList); |
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} |
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} |