private static void validateDataBuffer(DataBuffer dataBuffer, int w,
int h, SampleModel sampleModel)
{
int size = 0;
if (sampleModel is ComponentSampleModel)
{
ComponentSampleModel csm = (ComponentSampleModel)sampleModel;
int [] offsets = csm.getBandOffsets();
int maxOffset = offsets[0];
for (int i = 1; i < offsets.Length; i++)
{
if (offsets[i] > maxOffset)
{
maxOffset = offsets[i];
}
}
int scanlineStride = csm.getScanlineStride();
int pixelStride = csm.getPixelStride();
size = (h - 1) * scanlineStride +
(w - 1) * pixelStride + maxOffset + 1;
}
else if (sampleModel is MultiPixelPackedSampleModel)
{
MultiPixelPackedSampleModel mppsm =
(MultiPixelPackedSampleModel)sampleModel;
int scanlineStride = mppsm.getScanlineStride();
int dataBitOffset = mppsm.getDataBitOffset();
int dataType = dataBuffer.getDataType();
size = scanlineStride * h;
switch (dataType)
{
case DataBuffer.TYPE_BYTE:
size += (dataBitOffset + 7) / 8;
break;
case DataBuffer.TYPE_USHORT:
size += (dataBitOffset + 15) / 16;
break;
case DataBuffer.TYPE_INT:
size += (dataBitOffset + 31) / 32;
break;
}
}
else if (sampleModel is SinglePixelPackedSampleModel)
{
SinglePixelPackedSampleModel sppsm =
(SinglePixelPackedSampleModel)sampleModel;
int scanlineStride = sppsm.getScanlineStride();
size = (h - 1) * scanlineStride + w;
}
if (dataBuffer.getSize() < size)
{
// awt.298=dataBuffer is too small
throw new RasterFormatException("dataBuffer is too small"); //$NON-NLS-1$
}
}
private static void validateDataBuffer(DataBuffer dataBuffer, int w,
int h, SampleModel sampleModel)
{
int size = 0;
if (sampleModel is ComponentSampleModel) {
ComponentSampleModel csm = (ComponentSampleModel) sampleModel;
int [] offsets = csm.getBandOffsets();
int maxOffset = offsets[0];
for (int i = 1; i < offsets.Length; i++) {
if (offsets[i] > maxOffset) {
maxOffset = offsets[i];
}
}
int scanlineStride = csm.getScanlineStride();
int pixelStride = csm.getPixelStride();
size = (h - 1) * scanlineStride +
(w - 1) * pixelStride + maxOffset + 1;
} else if (sampleModel is MultiPixelPackedSampleModel) {
MultiPixelPackedSampleModel mppsm =
(MultiPixelPackedSampleModel) sampleModel;
int scanlineStride = mppsm.getScanlineStride();
int dataBitOffset = mppsm.getDataBitOffset();
int dataType = dataBuffer.getDataType();
size = scanlineStride * h;
switch (dataType) {
case DataBuffer.TYPE_BYTE:
size += (dataBitOffset + 7) / 8;
break;
case DataBuffer.TYPE_USHORT:
size += (dataBitOffset + 15) / 16;
break;
case DataBuffer.TYPE_INT:
size += (dataBitOffset + 31) / 32;
break;
}
} else if (sampleModel is SinglePixelPackedSampleModel) {
SinglePixelPackedSampleModel sppsm =
(SinglePixelPackedSampleModel) sampleModel;
int scanlineStride = sppsm.getScanlineStride();
size = (h - 1) * scanlineStride + w;
}
if (dataBuffer.getSize() < size) {
// awt.298=dataBuffer is too small
throw new RasterFormatException("dataBuffer is too small"); //$NON-NLS-1$
}
}