mirror of git://gcc.gnu.org/git/gcc.git
436 lines
11 KiB
Java
436 lines
11 KiB
Java
/* Copyright (C) 2000 Free Software Foundation
|
|
|
|
This file is part of libgcj.
|
|
|
|
This software is copyrighted work licensed under the terms of the
|
|
Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
|
|
details. */
|
|
|
|
package java.awt.image;
|
|
|
|
import gnu.gcj.awt.Buffers;
|
|
|
|
/* FIXME: This class does not yet support data type TYPE_SHORT */
|
|
|
|
/**
|
|
* @author Rolf W. Rasmussen <rolfwr@ii.uib.no>
|
|
*/
|
|
public class ComponentSampleModel extends SampleModel
|
|
{
|
|
protected int[] bandOffsets;
|
|
protected int[] bankIndices;
|
|
|
|
// FIXME: Should we really shadow the numBands in the superclass?
|
|
//protected int numBands;
|
|
|
|
/** Used when creating data buffers. */
|
|
protected int numBanks;
|
|
|
|
protected int scanlineStride;
|
|
|
|
protected int pixelStride;
|
|
|
|
private boolean tightPixelPacking = false;
|
|
|
|
public ComponentSampleModel(int dataType,
|
|
int w, int h,
|
|
int pixelStride,
|
|
int scanlineStride,
|
|
int[] bandOffsets)
|
|
{
|
|
this(dataType, w, h, pixelStride, scanlineStride,
|
|
new int[bandOffsets.length], bandOffsets);
|
|
}
|
|
|
|
public ComponentSampleModel(int dataType,
|
|
int w, int h,
|
|
int pixelStride,
|
|
int scanlineStride,
|
|
int[] bankIndices,
|
|
int[] bandOffsets)
|
|
{
|
|
super(dataType, w, h, bandOffsets.length);
|
|
if ((pixelStride<0) || (scanlineStride<0) ||
|
|
(bandOffsets.length<1) ||
|
|
(bandOffsets.length != bankIndices.length))
|
|
throw new IllegalArgumentException();
|
|
|
|
this.bandOffsets = bandOffsets;
|
|
this.bankIndices = bankIndices;
|
|
|
|
for (int b=0; b<bankIndices.length; b++)
|
|
this.numBanks = Math.max(this.numBanks, bankIndices[b]+1);
|
|
|
|
this.scanlineStride = scanlineStride;
|
|
this.pixelStride = pixelStride;
|
|
|
|
// See if we can use some speedups
|
|
|
|
/* FIXME: May these checks should be reserved for the
|
|
PixelInterleavedSampleModel? */
|
|
|
|
if (pixelStride == numBands)
|
|
{
|
|
tightPixelPacking = true;
|
|
for (int b=0; b<numBands; b++) {
|
|
if ((bandOffsets[b] != b) || (bankIndices[b] !=0))
|
|
{
|
|
tightPixelPacking = false;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
public SampleModel createCompatibleSampleModel(int w, int h)
|
|
{
|
|
return new ComponentSampleModel(dataType, w, h, pixelStride,
|
|
scanlineStride, bankIndices,
|
|
bandOffsets);
|
|
}
|
|
|
|
public SampleModel createSubsetSampleModel(int[] bands)
|
|
{
|
|
int numBands = bands.length;
|
|
|
|
int[] bankIndices = new int[numBands];
|
|
int[] bandOffsets = new int[numBands];
|
|
for (int b=0; b<numBands; b++)
|
|
{
|
|
bankIndices[b] = this.bankIndices[bands[b]];
|
|
bandOffsets[b] = this.bandOffsets[bands[b]];
|
|
}
|
|
|
|
return new ComponentSampleModel(dataType, width, height, pixelStride,
|
|
scanlineStride, bankIndices,
|
|
bandOffsets);
|
|
}
|
|
|
|
public DataBuffer createDataBuffer()
|
|
{
|
|
// Maybe this value should be precalculated in the constructor?
|
|
int highestOffset = 0;
|
|
for (int b=0; b<numBands; b++)
|
|
{
|
|
highestOffset = Math.max(highestOffset, bandOffsets[b]);
|
|
}
|
|
int size = pixelStride*(width-1) + scanlineStride*(height-1) +
|
|
highestOffset + 1;
|
|
|
|
return Buffers.createBuffer(getDataType(), size, numBanks);
|
|
}
|
|
|
|
public int getOffset(int x, int y)
|
|
{
|
|
return getOffset(x, y, 0);
|
|
}
|
|
|
|
public int getOffset(int x, int y, int b)
|
|
{
|
|
return bandOffsets[b] + pixelStride*x + scanlineStride*y;
|
|
}
|
|
|
|
public final int[] getSampleSize()
|
|
{
|
|
int size = DataBuffer.getDataTypeSize(getDataType());
|
|
int[] sizes = new int[numBands];
|
|
|
|
java.util.Arrays.fill(sizes, size);
|
|
return sizes;
|
|
}
|
|
|
|
public final int getSampleSize(int band)
|
|
{
|
|
return DataBuffer.getDataTypeSize(getDataType());
|
|
}
|
|
|
|
public final int[] getBankIndices()
|
|
{
|
|
return bankIndices;
|
|
}
|
|
|
|
public final int[] getBandOffsets()
|
|
{
|
|
return bandOffsets;
|
|
}
|
|
|
|
public final int getScanlineStride()
|
|
{
|
|
return scanlineStride;
|
|
}
|
|
|
|
public final int getPixelStride()
|
|
{
|
|
return pixelStride;
|
|
}
|
|
|
|
public final int getNumDataElements()
|
|
{
|
|
return numBands;
|
|
}
|
|
|
|
public Object getDataElements(int x, int y, Object obj, DataBuffer data)
|
|
{
|
|
int xyOffset = pixelStride*x + scanlineStride*y;
|
|
|
|
int[] totalBandDataOffsets = new int[numBands];
|
|
|
|
/* Notice that band and bank offsets are different. Band offsets
|
|
are managed by the sample model, and bank offsets are managed
|
|
by the data buffer. Both must be accounted for. */
|
|
|
|
/* FIXME: For single pixels, it is probably easier to simple
|
|
call getElem instead of calculating the bank offset ourself.
|
|
|
|
On the other hand, then we need to push the value through
|
|
the int type returned by the getElem method. */
|
|
|
|
int[] bankOffsets = data.getOffsets();
|
|
|
|
for (int b=0; b<numBands; b++)
|
|
{
|
|
totalBandDataOffsets[b] =
|
|
bandOffsets[b]+bankOffsets[bankIndices[b]] + xyOffset;
|
|
}
|
|
|
|
try
|
|
{
|
|
switch (getTransferType())
|
|
{
|
|
case DataBuffer.TYPE_BYTE:
|
|
DataBufferByte inByte = (DataBufferByte) data;
|
|
byte[] outByte = (byte[]) obj;
|
|
if (outByte == null) outByte = new byte[numBands];
|
|
|
|
for (int b=0; b<numBands; b++)
|
|
{
|
|
int dOffset = totalBandDataOffsets[b];
|
|
outByte[b] = inByte.getData(bankIndices[b])[dOffset];
|
|
}
|
|
return outByte;
|
|
|
|
case DataBuffer.TYPE_USHORT:
|
|
DataBufferUShort inUShort = (DataBufferUShort) data;
|
|
short[] outUShort = (short[]) obj;
|
|
if (outUShort == null) outUShort = new short[numBands];
|
|
|
|
for (int b=0; b<numBands; b++)
|
|
{
|
|
int dOffset = totalBandDataOffsets[b];
|
|
outUShort[b] = inUShort.getData(bankIndices[b])[dOffset];
|
|
}
|
|
return outUShort;
|
|
|
|
case DataBuffer.TYPE_INT:
|
|
DataBufferInt inInt = (DataBufferInt) data;
|
|
int[] outInt = (int[]) obj;
|
|
if (outInt == null) outInt = new int[numBands];
|
|
|
|
for (int b=0; b<numBands; b++)
|
|
{
|
|
int dOffset = totalBandDataOffsets[b];
|
|
outInt[b] = inInt.getData(bankIndices[b])[dOffset];
|
|
}
|
|
return outInt;
|
|
|
|
// FIXME: Fill in the other possible types.
|
|
default:
|
|
throw new IllegalStateException("unknown transfer type " +
|
|
getTransferType());
|
|
}
|
|
}
|
|
catch (ArrayIndexOutOfBoundsException aioobe)
|
|
{
|
|
String msg = "While reading data elements, " +
|
|
"x=" + x + ", y=" + y +", " + ", xyOffset=" + xyOffset +
|
|
", data.getSize()=" + data.getSize() + ": " + aioobe;
|
|
throw new ArrayIndexOutOfBoundsException(msg);
|
|
}
|
|
}
|
|
|
|
public Object getDataElements(int x, int y, int w, int h, Object obj,
|
|
DataBuffer data)
|
|
{
|
|
if (!tightPixelPacking)
|
|
{
|
|
return super.getDataElements(x, y, w, h, obj, data);
|
|
}
|
|
|
|
// using get speedup
|
|
|
|
// We can copy whole rows
|
|
int rowSize = w*numBands;
|
|
int dataSize = rowSize*h;
|
|
|
|
DataBuffer transferBuffer =
|
|
Buffers.createBuffer(getTransferType(), obj, dataSize);
|
|
obj = Buffers.getData(transferBuffer);
|
|
|
|
int inOffset =
|
|
pixelStride*x +
|
|
scanlineStride*y +
|
|
data.getOffset(); // Assumes only one band is used
|
|
|
|
/* We don't add band offsets since we assume that bands have
|
|
offsets 0, 1, 2, ... */
|
|
|
|
// See if we can copy everything in one go
|
|
if (scanlineStride == rowSize)
|
|
{
|
|
// Collapse scan lines:
|
|
rowSize *= h;
|
|
// We ignore scanlineStride since it won't be of any use
|
|
h = 1;
|
|
}
|
|
|
|
int outOffset = 0;
|
|
Object inArray = Buffers.getData(data);
|
|
for (int yd = 0; yd<h; yd++)
|
|
{
|
|
System.arraycopy(inArray, inOffset, obj, outOffset, rowSize);
|
|
inOffset += scanlineStride;
|
|
outOffset += rowSize;
|
|
}
|
|
return obj;
|
|
}
|
|
|
|
public void setDataElements(int x, int y, int w, int h,
|
|
Object obj, DataBuffer data)
|
|
{
|
|
if (!tightPixelPacking)
|
|
{
|
|
super.setDataElements(x, y, w, h, obj, data);
|
|
return;
|
|
}
|
|
|
|
// using set speedup, we can copy whole rows
|
|
int rowSize = w*numBands;
|
|
int dataSize = rowSize*h;
|
|
|
|
DataBuffer transferBuffer =
|
|
Buffers.createBufferFromData(getTransferType(), obj, dataSize);
|
|
|
|
int[] bankOffsets = data.getOffsets();
|
|
|
|
int outOffset =
|
|
pixelStride*x +
|
|
scanlineStride*y +
|
|
bankOffsets[0]; // same assuptions as in get...
|
|
|
|
// See if we can copy everything in one go
|
|
if (scanlineStride == rowSize)
|
|
{
|
|
// Collapse scan lines:
|
|
scanlineStride = rowSize *= h;
|
|
h = 1;
|
|
}
|
|
|
|
int inOffset = 0;
|
|
Object outArray = Buffers.getData(data);
|
|
for (int yd = 0; yd<h; yd++)
|
|
{
|
|
System.arraycopy(obj, inOffset, outArray, outOffset, rowSize);
|
|
outOffset += scanlineStride;
|
|
inOffset += rowSize;
|
|
}
|
|
}
|
|
|
|
public int[] getPixel(int x, int y, int[] iArray, DataBuffer data)
|
|
{
|
|
int offset = pixelStride*x + scanlineStride*y;
|
|
if (iArray == null) iArray = new int[numBands];
|
|
for (int b=0; b<numBands; b++)
|
|
{
|
|
iArray[b] = data.getElem(bankIndices[b], offset+bandOffsets[b]);
|
|
}
|
|
return iArray;
|
|
}
|
|
|
|
public int[] getPixels(int x, int y, int w, int h, int[] iArray,
|
|
DataBuffer data)
|
|
{
|
|
int offset = pixelStride*x + scanlineStride*y;
|
|
if (iArray == null) iArray = new int[numBands*w*h];
|
|
int outOffset = 0;
|
|
for (y=0; y<h; y++)
|
|
{
|
|
int lineOffset = offset;
|
|
for (x=0; x<w; x++)
|
|
{
|
|
for (int b=0; b<numBands; b++)
|
|
{
|
|
iArray[outOffset++] =
|
|
data.getElem(bankIndices[b], lineOffset+bandOffsets[b]);
|
|
}
|
|
lineOffset += pixelStride;
|
|
}
|
|
offset += scanlineStride;
|
|
}
|
|
return iArray;
|
|
}
|
|
|
|
public int getSample(int x, int y, int b, DataBuffer data)
|
|
{
|
|
return data.getElem(bankIndices[b], getOffset(x, y, b));
|
|
}
|
|
|
|
public void setDataElements(int x, int y, Object obj, DataBuffer data)
|
|
{
|
|
int offset = pixelStride*x + scanlineStride*y;
|
|
int[] totalBandDataOffsets = new int[numBands];
|
|
int[] bankOffsets = data.getOffsets();
|
|
for (int b=0; b<numBands; b++)
|
|
totalBandDataOffsets[b] =
|
|
bandOffsets[b]+bankOffsets[bankIndices[b]] + offset;
|
|
|
|
switch (getTransferType())
|
|
{
|
|
case DataBuffer.TYPE_BYTE:
|
|
{
|
|
DataBufferByte out = (DataBufferByte) data;
|
|
byte[] in = (byte[]) obj;
|
|
|
|
for (int b=0; b<numBands; b++)
|
|
out.getData(bankIndices[b])[totalBandDataOffsets[b]] = in[b];
|
|
|
|
return;
|
|
}
|
|
case DataBuffer.TYPE_USHORT:
|
|
{
|
|
DataBufferUShort out = (DataBufferUShort) data;
|
|
short[] in = (short[]) obj;
|
|
|
|
for (int b=0; b<numBands; b++)
|
|
out.getData(bankIndices[b])[totalBandDataOffsets[b]] = in[b];
|
|
|
|
return;
|
|
}
|
|
case DataBuffer.TYPE_INT:
|
|
{
|
|
DataBufferInt out = (DataBufferInt) data;
|
|
int[] in = (int[]) obj;
|
|
|
|
for (int b=0; b<numBands; b++)
|
|
out.getData(bankIndices[b])[totalBandDataOffsets[b]] = in[b];
|
|
|
|
return;
|
|
}
|
|
default:
|
|
throw new UnsupportedOperationException("transfer type not " +
|
|
"implemented");
|
|
}
|
|
}
|
|
|
|
public void setPixel(int x, int y, int[] iArray, DataBuffer data)
|
|
{
|
|
int offset = pixelStride*x + scanlineStride*y;
|
|
for (int b=0; b<numBands; b++)
|
|
data.setElem(bankIndices[b], offset+bandOffsets[b], iArray[b]);
|
|
}
|
|
|
|
public void setSample(int x, int y, int b, int s, DataBuffer data)
|
|
{
|
|
data.setElem(bankIndices[b], getOffset(x, y, b), s);
|
|
}
|
|
}
|